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-rw-r--r--fs/cifs/Kconfig35
-rw-r--r--fs/cifs/Makefile2
-rw-r--r--fs/cifs/README28
-rw-r--r--fs/cifs/cache.c2
-rw-r--r--fs/cifs/cifs_debug.c45
-rw-r--r--fs/cifs/cifs_fs_sb.h4
-rw-r--r--fs/cifs/cifs_spnego.c4
-rw-r--r--fs/cifs/cifs_unicode.c49
-rw-r--r--fs/cifs/cifs_unicode.h5
-rw-r--r--fs/cifs/cifsacl.c483
-rw-r--r--fs/cifs/cifsacl.h25
-rw-r--r--fs/cifs/cifsencrypt.c33
-rw-r--r--fs/cifs/cifsfs.c125
-rw-r--r--fs/cifs/cifsfs.h20
-rw-r--r--fs/cifs/cifsglob.h21
-rw-r--r--fs/cifs/cifspdu.h37
-rw-r--r--fs/cifs/cifsproto.h30
-rw-r--r--fs/cifs/cifssmb.c391
-rw-r--r--fs/cifs/connect.c475
-rw-r--r--fs/cifs/export.c4
-rw-r--r--fs/cifs/file.c237
-rw-r--r--fs/cifs/inode.c129
-rw-r--r--fs/cifs/link.c4
-rw-r--r--fs/cifs/misc.c13
-rw-r--r--fs/cifs/netmisc.c7
-rw-r--r--fs/cifs/sess.c51
-rw-r--r--fs/cifs/smbdes.c418
-rw-r--r--fs/cifs/smbencrypt.c124
-rw-r--r--fs/cifs/transport.c66
-rw-r--r--fs/cifs/xattr.c20
30 files changed, 1513 insertions, 1374 deletions
diff --git a/fs/cifs/Kconfig b/fs/cifs/Kconfig
index 7cb0f7f847e..75c47cd8d08 100644
--- a/fs/cifs/Kconfig
+++ b/fs/cifs/Kconfig
@@ -7,6 +7,7 @@ config CIFS
select CRYPTO_MD5
select CRYPTO_HMAC
select CRYPTO_ARC4
+ select CRYPTO_DES
help
This is the client VFS module for the Common Internet File System
(CIFS) protocol which is the successor to the Server Message Block
@@ -152,16 +153,28 @@ config CIFS_ACL
Allows to fetch CIFS/NTFS ACL from the server. The DACL blob
is handed over to the application/caller.
-config CIFS_EXPERIMENTAL
- bool "CIFS Experimental Features (EXPERIMENTAL)"
+config CIFS_SMB2
+ bool "SMB2 network file system support (EXPERIMENTAL)"
+ depends on EXPERIMENTAL && INET && BROKEN
+ select NLS
+ select KEYS
+ select FSCACHE
+ select DNS_RESOLVER
+
+ help
+ This enables experimental support for the SMB2 (Server Message Block
+ version 2) protocol. The SMB2 protocol is the successor to the
+ popular CIFS and SMB network file sharing protocols. SMB2 is the
+ native file sharing mechanism for recent versions of Windows
+ operating systems (since Vista). SMB2 enablement will eventually
+ allow users better performance, security and features, than would be
+ possible with cifs. Note that smb2 mount options also are simpler
+ (compared to cifs) due to protocol improvements.
+
+ Unless you are a developer or tester, say N.
+
+config CIFS_NFSD_EXPORT
+ bool "Allow nfsd to export CIFS file system (EXPERIMENTAL)"
depends on CIFS && EXPERIMENTAL
help
- Enables cifs features under testing. These features are
- experimental and currently include DFS support and directory
- change notification ie fcntl(F_DNOTIFY), as well as the upcall
- mechanism which will be used for Kerberos session negotiation
- and uid remapping. Some of these features also may depend on
- setting a value of 1 to the pseudo-file /proc/fs/cifs/Experimental
- (which is disabled by default). See the file fs/cifs/README
- for more details. If unsure, say N.
-
+ Allows NFS server to export a CIFS mounted share (nfsd over cifs)
diff --git a/fs/cifs/Makefile b/fs/cifs/Makefile
index d87558448e3..005d524c3a4 100644
--- a/fs/cifs/Makefile
+++ b/fs/cifs/Makefile
@@ -4,7 +4,7 @@
obj-$(CONFIG_CIFS) += cifs.o
cifs-y := cifsfs.o cifssmb.o cifs_debug.o connect.o dir.o file.o inode.o \
- link.o misc.o netmisc.o smbdes.o smbencrypt.o transport.o asn1.o \
+ link.o misc.o netmisc.o smbencrypt.o transport.o asn1.o \
cifs_unicode.o nterr.o xattr.o cifsencrypt.o \
readdir.o ioctl.o sess.o export.o
diff --git a/fs/cifs/README b/fs/cifs/README
index fe168359082..4a3ca0e5ca2 100644
--- a/fs/cifs/README
+++ b/fs/cifs/README
@@ -685,22 +685,6 @@ LinuxExtensionsEnabled If set to one then the client will attempt to
support and want to map the uid and gid fields
to values supplied at mount (rather than the
actual values, then set this to zero. (default 1)
-Experimental When set to 1 used to enable certain experimental
- features (currently enables multipage writes
- when signing is enabled, the multipage write
- performance enhancement was disabled when
- signing turned on in case buffer was modified
- just before it was sent, also this flag will
- be used to use the new experimental directory change
- notification code). When set to 2 enables
- an additional experimental feature, "raw ntlmssp"
- session establishment support (which allows
- specifying "sec=ntlmssp" on mount). The Linux cifs
- module will use ntlmv2 authentication encapsulated
- in "raw ntlmssp" (not using SPNEGO) when
- "sec=ntlmssp" is specified on mount.
- This support also requires building cifs with
- the CONFIG_CIFS_EXPERIMENTAL configuration flag.
These experimental features and tracing can be enabled by changing flags in
/proc/fs/cifs (after the cifs module has been installed or built into the
@@ -720,18 +704,6 @@ the start of smb requests and responses can be enabled via:
echo 1 > /proc/fs/cifs/traceSMB
-Two other experimental features are under development. To test these
-requires enabling CONFIG_CIFS_EXPERIMENTAL
-
- cifsacl support needed to retrieve approximated mode bits based on
- the contents on the CIFS ACL.
-
- lease support: cifs will check the oplock state before calling into
- the vfs to see if we can grant a lease on a file.
-
- DNOTIFY fcntl: needed for support of directory change
- notification and perhaps later for file leases)
-
Per share (per client mount) statistics are available in /proc/fs/cifs/Stats
if the kernel was configured with cifs statistics enabled. The statistics
represent the number of successful (ie non-zero return code from the server)
diff --git a/fs/cifs/cache.c b/fs/cifs/cache.c
index e654dfd092c..53d57a3fe42 100644
--- a/fs/cifs/cache.c
+++ b/fs/cifs/cache.c
@@ -50,7 +50,7 @@ void cifs_fscache_unregister(void)
*/
struct cifs_server_key {
uint16_t family; /* address family */
- uint16_t port; /* IP port */
+ __be16 port; /* IP port */
union {
struct in_addr ipv4_addr;
struct in6_addr ipv6_addr;
diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index 65829d32128..18f4272d904 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -63,7 +63,7 @@ void cifs_dump_detail(struct smb_hdr *smb)
cERROR(1, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d",
smb->Command, smb->Status.CifsError,
smb->Flags, smb->Flags2, smb->Mid, smb->Pid);
- cERROR(1, "smb buf %p len %d", smb, smbCalcSize_LE(smb));
+ cERROR(1, "smb buf %p len %d", smb, smbCalcSize(smb));
}
@@ -423,7 +423,6 @@ static const struct file_operations cifs_lookup_cache_proc_fops;
static const struct file_operations traceSMB_proc_fops;
static const struct file_operations cifs_multiuser_mount_proc_fops;
static const struct file_operations cifs_security_flags_proc_fops;
-static const struct file_operations cifs_experimental_proc_fops;
static const struct file_operations cifs_linux_ext_proc_fops;
void
@@ -441,8 +440,6 @@ cifs_proc_init(void)
proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
proc_create("OplockEnabled", 0, proc_fs_cifs, &cifs_oplock_proc_fops);
- proc_create("Experimental", 0, proc_fs_cifs,
- &cifs_experimental_proc_fops);
proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
&cifs_linux_ext_proc_fops);
proc_create("MultiuserMount", 0, proc_fs_cifs,
@@ -469,7 +466,6 @@ cifs_proc_clean(void)
remove_proc_entry("OplockEnabled", proc_fs_cifs);
remove_proc_entry("SecurityFlags", proc_fs_cifs);
remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
- remove_proc_entry("Experimental", proc_fs_cifs);
remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
remove_proc_entry("fs/cifs", NULL);
}
@@ -550,45 +546,6 @@ static const struct file_operations cifs_oplock_proc_fops = {
.write = cifs_oplock_proc_write,
};
-static int cifs_experimental_proc_show(struct seq_file *m, void *v)
-{
- seq_printf(m, "%d\n", experimEnabled);
- return 0;
-}
-
-static int cifs_experimental_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, cifs_experimental_proc_show, NULL);
-}
-
-static ssize_t cifs_experimental_proc_write(struct file *file,
- const char __user *buffer, size_t count, loff_t *ppos)
-{
- char c;
- int rc;
-
- rc = get_user(c, buffer);
- if (rc)
- return rc;
- if (c == '0' || c == 'n' || c == 'N')
- experimEnabled = 0;
- else if (c == '1' || c == 'y' || c == 'Y')
- experimEnabled = 1;
- else if (c == '2')
- experimEnabled = 2;
-
- return count;
-}
-
-static const struct file_operations cifs_experimental_proc_fops = {
- .owner = THIS_MODULE,
- .open = cifs_experimental_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = cifs_experimental_proc_write,
-};
-
static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
{
seq_printf(m, "%d\n", linuxExtEnabled);
diff --git a/fs/cifs/cifs_fs_sb.h b/fs/cifs/cifs_fs_sb.h
index ac51cd2d33a..a9d5692e0c2 100644
--- a/fs/cifs/cifs_fs_sb.h
+++ b/fs/cifs/cifs_fs_sb.h
@@ -58,9 +58,7 @@ struct cifs_sb_info {
unsigned int mnt_cifs_flags;
int prepathlen;
char *prepath; /* relative path under the share to mount to */
-#ifdef CONFIG_CIFS_DFS_UPCALL
- char *mountdata; /* mount options received at mount time */
-#endif
+ char *mountdata; /* options received at mount time or via DFS refs */
struct backing_dev_info bdi;
struct delayed_work prune_tlinks;
};
diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c
index 4dfba828316..33d221394ac 100644
--- a/fs/cifs/cifs_spnego.c
+++ b/fs/cifs/cifs_spnego.c
@@ -113,7 +113,7 @@ cifs_get_spnego_key(struct cifsSesInfo *sesInfo)
MAX_MECH_STR_LEN +
UID_KEY_LEN + (sizeof(uid_t) * 2) +
CREDUID_KEY_LEN + (sizeof(uid_t) * 2) +
- USER_KEY_LEN + strlen(sesInfo->userName) +
+ USER_KEY_LEN + strlen(sesInfo->user_name) +
PID_KEY_LEN + (sizeof(pid_t) * 2) + 1;
spnego_key = ERR_PTR(-ENOMEM);
@@ -153,7 +153,7 @@ cifs_get_spnego_key(struct cifsSesInfo *sesInfo)
sprintf(dp, ";creduid=0x%x", sesInfo->cred_uid);
dp = description + strlen(description);
- sprintf(dp, ";user=%s", sesInfo->userName);
+ sprintf(dp, ";user=%s", sesInfo->user_name);
dp = description + strlen(description);
sprintf(dp, ";pid=0x%x", current->pid);
diff --git a/fs/cifs/cifs_unicode.c b/fs/cifs/cifs_unicode.c
index fc0fd4fde30..1b2e180b018 100644
--- a/fs/cifs/cifs_unicode.c
+++ b/fs/cifs/cifs_unicode.c
@@ -90,7 +90,7 @@ cifs_mapchar(char *target, const __u16 src_char, const struct nls_table *cp,
case UNI_COLON:
*target = ':';
break;
- case UNI_ASTERIK:
+ case UNI_ASTERISK:
*target = '*';
break;
case UNI_QUESTION:
@@ -264,40 +264,41 @@ cifs_strndup_from_ucs(const char *src, const int maxlen, const bool is_unicode,
* names are little endian 16 bit Unicode on the wire
*/
int
-cifsConvertToUCS(__le16 *target, const char *source, int maxlen,
+cifsConvertToUCS(__le16 *target, const char *source, int srclen,
const struct nls_table *cp, int mapChars)
{
int i, j, charlen;
- int len_remaining = maxlen;
char src_char;
- __u16 temp;
+ __le16 dst_char;
+ wchar_t tmp;
if (!mapChars)
return cifs_strtoUCS(target, source, PATH_MAX, cp);
- for (i = 0, j = 0; i < maxlen; j++) {
+ for (i = 0, j = 0; i < srclen; j++) {
src_char = source[i];
+ charlen = 1;
switch (src_char) {
case 0:
- put_unaligned_le16(0, &target[j]);
+ put_unaligned(0, &target[j]);
goto ctoUCS_out;
case ':':
- temp = UNI_COLON;
+ dst_char = cpu_to_le16(UNI_COLON);
break;
case '*':
- temp = UNI_ASTERIK;
+ dst_char = cpu_to_le16(UNI_ASTERISK);
break;
case '?':
- temp = UNI_QUESTION;
+ dst_char = cpu_to_le16(UNI_QUESTION);
break;
case '<':
- temp = UNI_LESSTHAN;
+ dst_char = cpu_to_le16(UNI_LESSTHAN);
break;
case '>':
- temp = UNI_GRTRTHAN;
+ dst_char = cpu_to_le16(UNI_GRTRTHAN);
break;
case '|':
- temp = UNI_PIPE;
+ dst_char = cpu_to_le16(UNI_PIPE);
break;
/*
* FIXME: We can not handle remapping backslash (UNI_SLASH)
@@ -305,28 +306,24 @@ cifsConvertToUCS(__le16 *target, const char *source, int maxlen,
* as they use backslash as separator.
*/
default:
- charlen = cp->char2uni(source+i, len_remaining,
- &temp);
+ charlen = cp->char2uni(source + i, srclen - i, &tmp);
+ dst_char = cpu_to_le16(tmp);
+
/*
* if no match, use question mark, which at least in
* some cases serves as wild card
*/
if (charlen < 1) {
- temp = 0x003f;
+ dst_char = cpu_to_le16(0x003f);
charlen = 1;
}
- len_remaining -= charlen;
- /*
- * character may take more than one byte in the source
- * string, but will take exactly two bytes in the
- * target string
- */
- i += charlen;
- continue;
}
- put_unaligned_le16(temp, &target[j]);
- i++; /* move to next char in source string */
- len_remaining--;
+ /*
+ * character may take more than one byte in the source string,
+ * but will take exactly two bytes in the target string
+ */
+ i += charlen;
+ put_unaligned(dst_char, &target[j]);
}
ctoUCS_out:
diff --git a/fs/cifs/cifs_unicode.h b/fs/cifs/cifs_unicode.h
index 7fe6b52df50..6d02fd56056 100644
--- a/fs/cifs/cifs_unicode.h
+++ b/fs/cifs/cifs_unicode.h
@@ -44,7 +44,7 @@
* reserved symbols (along with \ and /), otherwise illegal to store
* in filenames in NTFS
*/
-#define UNI_ASTERIK (__u16) ('*' + 0xF000)
+#define UNI_ASTERISK (__u16) ('*' + 0xF000)
#define UNI_QUESTION (__u16) ('?' + 0xF000)
#define UNI_COLON (__u16) (':' + 0xF000)
#define UNI_GRTRTHAN (__u16) ('>' + 0xF000)
@@ -82,6 +82,9 @@ int cifs_strtoUCS(__le16 *, const char *, int, const struct nls_table *);
char *cifs_strndup_from_ucs(const char *src, const int maxlen,
const bool is_unicode,
const struct nls_table *codepage);
+extern int cifsConvertToUCS(__le16 *target, const char *source, int maxlen,
+ const struct nls_table *cp, int mapChars);
+
#endif
/*
diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index beeebf19423..f3c6fb9942a 100644
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -23,24 +23,16 @@
#include <linux/fs.h>
#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/keyctl.h>
+#include <linux/key-type.h>
+#include <keys/user-type.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsacl.h"
#include "cifsproto.h"
#include "cifs_debug.h"
-
-static struct cifs_wksid wksidarr[NUM_WK_SIDS] = {
- {{1, 0, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0, 0} }, "null user"},
- {{1, 1, {0, 0, 0, 0, 0, 1}, {0, 0, 0, 0, 0} }, "nobody"},
- {{1, 1, {0, 0, 0, 0, 0, 5}, {__constant_cpu_to_le32(11), 0, 0, 0, 0} }, "net-users"},
- {{1, 1, {0, 0, 0, 0, 0, 5}, {__constant_cpu_to_le32(18), 0, 0, 0, 0} }, "sys"},
- {{1, 2, {0, 0, 0, 0, 0, 5}, {__constant_cpu_to_le32(32), __constant_cpu_to_le32(544), 0, 0, 0} }, "root"},
- {{1, 2, {0, 0, 0, 0, 0, 5}, {__constant_cpu_to_le32(32), __constant_cpu_to_le32(545), 0, 0, 0} }, "users"},
- {{1, 2, {0, 0, 0, 0, 0, 5}, {__constant_cpu_to_le32(32), __constant_cpu_to_le32(546), 0, 0, 0} }, "guest"} }
-;
-
-
/* security id for everyone/world system group */
static const struct cifs_sid sid_everyone = {
1, 1, {0, 0, 0, 0, 0, 1}, {0} };
@@ -50,50 +42,385 @@ static const struct cifs_sid sid_authusers = {
/* group users */
static const struct cifs_sid sid_user = {1, 2 , {0, 0, 0, 0, 0, 5}, {} };
+const struct cred *root_cred;
-int match_sid(struct cifs_sid *ctsid)
+static void
+shrink_idmap_tree(struct rb_root *root, int nr_to_scan, int *nr_rem,
+ int *nr_del)
{
- int i, j;
- int num_subauth, num_sat, num_saw;
- struct cifs_sid *cwsid;
+ struct rb_node *node;
+ struct rb_node *tmp;
+ struct cifs_sid_id *psidid;
+
+ node = rb_first(root);
+ while (node) {
+ tmp = node;
+ node = rb_next(tmp);
+ psidid = rb_entry(tmp, struct cifs_sid_id, rbnode);
+ if (nr_to_scan == 0 || *nr_del == nr_to_scan)
+ ++(*nr_rem);
+ else {
+ if (time_after(jiffies, psidid->time + SID_MAP_EXPIRE)
+ && psidid->refcount == 0) {
+ rb_erase(tmp, root);
+ ++(*nr_del);
+ } else
+ ++(*nr_rem);
+ }
+ }
+}
+
+/*
+ * Run idmap cache shrinker.
+ */
+static int
+cifs_idmap_shrinker(struct shrinker *shrink, int nr_to_scan, gfp_t gfp_mask)
+{
+ int nr_del = 0;
+ int nr_rem = 0;
+ struct rb_root *root;
+
+ root = &uidtree;
+ spin_lock(&siduidlock);
+ shrink_idmap_tree(root, nr_to_scan, &nr_rem, &nr_del);
+ spin_unlock(&siduidlock);
+
+ root = &gidtree;
+ spin_lock(&sidgidlock);
+ shrink_idmap_tree(root, nr_to_scan, &nr_rem, &nr_del);
+ spin_unlock(&sidgidlock);
+
+ return nr_rem;
+}
+
+static struct shrinker cifs_shrinker = {
+ .shrink = cifs_idmap_shrinker,
+ .seeks = DEFAULT_SEEKS,
+};
+
+static int
+cifs_idmap_key_instantiate(struct key *key, const void *data, size_t datalen)
+{
+ char *payload;
+
+ payload = kmalloc(datalen, GFP_KERNEL);
+ if (!payload)
+ return -ENOMEM;
+
+ memcpy(payload, data, datalen);
+ key->payload.data = payload;
+ return 0;
+}
+
+static inline void
+cifs_idmap_key_destroy(struct key *key)
+{
+ kfree(key->payload.data);
+}
- if (!ctsid)
- return -1;
+struct key_type cifs_idmap_key_type = {
+ .name = "cifs.idmap",
+ .instantiate = cifs_idmap_key_instantiate,
+ .destroy = cifs_idmap_key_destroy,
+ .describe = user_describe,
+ .match = user_match,
+};
+
+static void
+sid_to_str(struct cifs_sid *sidptr, char *sidstr)
+{
+ int i;
+ unsigned long saval;
+ char *strptr;
- for (i = 0; i < NUM_WK_SIDS; ++i) {
- cwsid = &(wksidarr[i].cifssid);
+ strptr = sidstr;
- /* compare the revision */
- if (ctsid->revision != cwsid->revision)
- continue;
+ sprintf(strptr, "%s", "S");
+ strptr = sidstr + strlen(sidstr);
- /* compare all of the six auth values */
- for (j = 0; j < 6; ++j) {
- if (ctsid->authority[j] != cwsid->authority[j])
- break;
+ sprintf(strptr, "-%d", sidptr->revision);
+ strptr = sidstr + strlen(sidstr);
+
+ for (i = 0; i < 6; ++i) {
+ if (sidptr->authority[i]) {
+ sprintf(strptr, "-%d", sidptr->authority[i]);
+ strptr = sidstr + strlen(sidstr);
}
- if (j < 6)
- continue; /* all of the auth values did not match */
-
- /* compare all of the subauth values if any */
- num_sat = ctsid->num_subauth;
- num_saw = cwsid->num_subauth;
- num_subauth = num_sat < num_saw ? num_sat : num_saw;
- if (num_subauth) {
- for (j = 0; j < num_subauth; ++j) {
- if (ctsid->sub_auth[j] != cwsid->sub_auth[j])
- break;
- }
- if (j < num_subauth)
- continue; /* all sub_auth values do not match */
+ }
+
+ for (i = 0; i < sidptr->num_subauth; ++i) {
+ saval = le32_to_cpu(sidptr->sub_auth[i]);
+ sprintf(strptr, "-%ld", saval);
+ strptr = sidstr + strlen(sidstr);
+ }
+}
+
+static void
+id_rb_insert(struct rb_root *root, struct cifs_sid *sidptr,
+ struct cifs_sid_id **psidid, char *typestr)
+{
+ int rc;
+ char *strptr;
+ struct rb_node *node = root->rb_node;
+ struct rb_node *parent = NULL;
+ struct rb_node **linkto = &(root->rb_node);
+ struct cifs_sid_id *lsidid;
+
+ while (node) {
+ lsidid = rb_entry(node, struct cifs_sid_id, rbnode);
+ parent = node;
+ rc = compare_sids(sidptr, &((lsidid)->sid));
+ if (rc > 0) {
+ linkto = &(node->rb_left);
+ node = node->rb_left;
+ } else if (rc < 0) {
+ linkto = &(node->rb_right);
+ node = node->rb_right;
+ }
+ }
+
+ memcpy(&(*psidid)->sid, sidptr, sizeof(struct cifs_sid));
+ (*psidid)->time = jiffies - (SID_MAP_RETRY + 1);
+ (*psidid)->refcount = 0;
+
+ sprintf((*psidid)->sidstr, "%s", typestr);
+ strptr = (*psidid)->sidstr + strlen((*psidid)->sidstr);
+ sid_to_str(&(*psidid)->sid, strptr);
+
+ clear_bit(SID_ID_PENDING, &(*psidid)->state);
+ clear_bit(SID_ID_MAPPED, &(*psidid)->state);
+
+ rb_link_node(&(*psidid)->rbnode, parent, linkto);
+ rb_insert_color(&(*psidid)->rbnode, root);
+}
+
+static struct cifs_sid_id *
+id_rb_search(struct rb_root *root, struct cifs_sid *sidptr)
+{
+ int rc;
+ struct rb_node *node = root->rb_node;
+ struct cifs_sid_id *lsidid;
+
+ while (node) {
+ lsidid = rb_entry(node, struct cifs_sid_id, rbnode);
+ rc = compare_sids(sidptr, &((lsidid)->sid));
+ if (rc > 0) {
+ node = node->rb_left;
+ } else if (rc < 0) {
+ node = node->rb_right;
+ } else /* node found */
+ return lsidid;
+ }
+
+ return NULL;
+}
+
+static int
+sidid_pending_wait(void *unused)
+{
+ schedule();
+ return signal_pending(current) ? -ERESTARTSYS : 0;
+}
+
+static int
+sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
+ struct cifs_fattr *fattr, uint sidtype)
+{
+ int rc;
+ unsigned long cid;
+ struct key *idkey;
+ const struct cred *saved_cred;
+ struct cifs_sid_id *psidid, *npsidid;
+ struct rb_root *cidtree;
+ spinlock_t *cidlock;
+
+ if (sidtype == SIDOWNER) {
+ cid = cifs_sb->mnt_uid; /* default uid, in case upcall fails */
+ cidlock = &siduidlock;
+ cidtree = &uidtree;
+ } else if (sidtype == SIDGROUP) {
+ cid = cifs_sb->mnt_gid; /* default gid, in case upcall fails */
+ cidlock = &sidgidlock;
+ cidtree = &gidtree;
+ } else
+ return -ENOENT;
+
+ spin_lock(cidlock);
+ psidid = id_rb_search(cidtree, psid);
+
+ if (!psidid) { /* node does not exist, allocate one & attempt adding */
+ spin_unlock(cidlock);
+ npsidid = kzalloc(sizeof(struct cifs_sid_id), GFP_KERNEL);
+ if (!npsidid)
+ return -ENOMEM;
+
+ npsidid->sidstr = kmalloc(SIDLEN, GFP_KERNEL);
+ if (!npsidid->sidstr) {
+ kfree(npsidid);
+ return -ENOMEM;
+ }
+
+ spin_lock(cidlock);
+ psidid = id_rb_search(cidtree, psid);
+ if (psidid) { /* node happened to get inserted meanwhile */
+ ++psidid->refcount;
+ spin_unlock(cidlock);
+ kfree(npsidid->sidstr);
+ kfree(npsidid);
+ } else {
+ psidid = npsidid;
+ id_rb_insert(cidtree, psid, &psidid,
+ sidtype == SIDOWNER ? "os:" : "gs:");
+ ++psidid->refcount;
+ spin_unlock(cidlock);
}
+ } else {
+ ++psidid->refcount;
+ spin_unlock(cidlock);
+ }
+
+ /*
+ * If we are here, it is safe to access psidid and its fields
+ * since a reference was taken earlier while holding the spinlock.
+ * A reference on the node is put without holding the spinlock
+ * and it is OK to do so in this case, shrinker will not erase
+ * this node until all references are put and we do not access
+ * any fields of the node after a reference is put .
+ */
+ if (test_bit(SID_ID_MAPPED, &psidid->state)) {
+ cid = psidid->id;
+ psidid->time = jiffies; /* update ts for accessing */
+ goto sid_to_id_out;
+ }
- cFYI(1, "matching sid: %s\n", wksidarr[i].sidname);
- return 0; /* sids compare/match */
+ if (time_after(psidid->time + SID_MAP_RETRY, jiffies))
+ goto sid_to_id_out;
+
+ if (!test_and_set_bit(SID_ID_PENDING, &psidid->state)) {
+ saved_cred = override_creds(root_cred);
+ idkey = request_key(&cifs_idmap_key_type, psidid->sidstr, "");
+ if (IS_ERR(idkey))
+ cFYI(1, "%s: Can't map SID to an id", __func__);
+ else {
+ cid = *(unsigned long *)idkey->payload.value;
+ psidid->id = cid;
+ set_bit(SID_ID_MAPPED, &psidid->state);
+ key_put(idkey);
+ kfree(psidid->sidstr);
+ }
+ revert_creds(saved_cred);
+ psidid->time = jiffies; /* update ts for accessing */
+ clear_bit(SID_ID_PENDING, &psidid->state);
+ wake_up_bit(&psidid->state, SID_ID_PENDING);
+ } else {
+ rc = wait_on_bit(&psidid->state, SID_ID_PENDING,
+ sidid_pending_wait, TASK_INTERRUPTIBLE);
+ if (rc) {
+ cFYI(1, "%s: sidid_pending_wait interrupted %d",
+ __func__, rc);
+ --psidid->refcount; /* decremented without spinlock */
+ return rc;
+ }
+ if (test_bit(SID_ID_MAPPED, &psidid->state))
+ cid = psidid->id;
}
- cFYI(1, "No matching sid");
- return -1;
+sid_to_id_out:
+ --psidid->refcount; /* decremented without spinlock */
+ if (sidtype == SIDOWNER)
+ fattr->cf_uid = cid;
+ else
+ fattr->cf_gid = cid;
+
+ return 0;
+}
+
+int
+init_cifs_idmap(void)
+{
+ struct cred *cred;
+ struct key *keyring;
+ int ret;
+
+ cFYI(1, "Registering the %s key type\n", cifs_idmap_key_type.name);
+
+ /* create an override credential set with a special thread keyring in
+ * which requests are cached
+ *
+ * this is used to prevent malicious redirections from being installed
+ * with add_key().
+ */
+ cred = prepare_kernel_cred(NULL);
+ if (!cred)
+ return -ENOMEM;
+
+ keyring = key_alloc(&key_type_keyring, ".cifs_idmap", 0, 0, cred,
+ (KEY_POS_ALL & ~KEY_POS_SETATTR) |
+ KEY_USR_VIEW | KEY_USR_READ,
+ KEY_ALLOC_NOT_IN_QUOTA);
+ if (IS_ERR(keyring)) {
+ ret = PTR_ERR(keyring);
+ goto failed_put_cred;
+ }
+
+ ret = key_instantiate_and_link(keyring, NULL, 0, NULL, NULL);
+ if (ret < 0)
+ goto failed_put_key;
+
+ ret = register_key_type(&cifs_idmap_key_type);
+ if (ret < 0)
+ goto failed_put_key;
+
+ /* instruct request_key() to use this special keyring as a cache for
+ * the results it looks up */
+ cred->thread_keyring = keyring;
+ cred->jit_keyring = KEY_REQKEY_DEFL_THREAD_KEYRING;
+ root_cred = cred;
+
+ spin_lock_init(&siduidlock);
+ uidtree = RB_ROOT;
+ spin_lock_init(&sidgidlock);
+ gidtree = RB_ROOT;
+
+ register_shrinker(&cifs_shrinker);
+
+ cFYI(1, "cifs idmap keyring: %d\n", key_serial(keyring));
+ return 0;
+
+failed_put_key:
+ key_put(keyring);
+failed_put_cred:
+ put_cred(cred);
+ return ret;
+}
+
+void
+exit_cifs_idmap(void)
+{
+ key_revoke(root_cred->thread_keyring);
+ unregister_key_type(&cifs_idmap_key_type);
+ put_cred(root_cred);
+ unregister_shrinker(&cifs_shrinker);
+ cFYI(1, "Unregistered %s key type\n", cifs_idmap_key_type.name);
+}
+
+void
+cifs_destroy_idmaptrees(void)
+{
+ struct rb_root *root;
+ struct rb_node *node;
+
+ root = &uidtree;
+ spin_lock(&siduidlock);
+ while ((node = rb_first(root)))
+ rb_erase(node, root);
+ spin_unlock(&siduidlock);
+
+ root = &gidtree;
+ spin_lock(&sidgidlock);
+ while ((node = rb_first(root)))
+ rb_erase(node, root);
+ spin_unlock(&sidgidlock);
}
/* if the two SIDs (roughly equivalent to a UUID for a user or group) are
@@ -104,16 +431,24 @@ int compare_sids(const struct cifs_sid *ctsid, const struct cifs_sid *cwsid)
int num_subauth, num_sat, num_saw;
if ((!ctsid) || (!cwsid))
- return 0;
+ return 1;
/* compare the revision */
- if (ctsid->revision != cwsid->revision)
- return 0;
+ if (ctsid->revision != cwsid->revision) {
+ if (ctsid->revision > cwsid->revision)
+ return 1;
+ else
+ return -1;
+ }
/* compare all of the six auth values */
for (i = 0; i < 6; ++i) {
- if (ctsid->authority[i] != cwsid->authority[i])
- return 0;
+ if (ctsid->authority[i] != cwsid->authority[i]) {
+ if (ctsid->authority[i] > cwsid->authority[i])
+ return 1;
+ else
+ return -1;
+ }
}
/* compare all of the subauth values if any */
@@ -122,12 +457,16 @@ int compare_sids(const struct cifs_sid *ctsid, const struct cifs_sid *cwsid)
num_subauth = num_sat < num_saw ? num_sat : num_saw;
if (num_subauth) {
for (i = 0; i < num_subauth; ++i) {
- if (ctsid->sub_auth[i] != cwsid->sub_auth[i])
- return 0;
+ if (ctsid->sub_auth[i] != cwsid->sub_auth[i]) {
+ if (ctsid->sub_auth[i] > cwsid->sub_auth[i])
+ return 1;
+ else
+ return -1;
+ }
}
}
- return 1; /* sids compare/match */
+ return 0; /* sids compare/match */
}
@@ -382,22 +721,22 @@ static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl,
#ifdef CONFIG_CIFS_DEBUG2
dump_ace(ppace[i], end_of_acl);
#endif
- if (compare_sids(&(ppace[i]->sid), pownersid))
+ if (compare_sids(&(ppace[i]->sid), pownersid) == 0)
access_flags_to_mode(ppace[i]->access_req,
ppace[i]->type,
&fattr->cf_mode,
&user_mask);
- if (compare_sids(&(ppace[i]->sid), pgrpsid))
+ if (compare_sids(&(ppace[i]->sid), pgrpsid) == 0)
access_flags_to_mode(ppace[i]->access_req,
ppace[i]->type,
&fattr->cf_mode,
&group_mask);
- if (compare_sids(&(ppace[i]->sid), &sid_everyone))
+ if (compare_sids(&(ppace[i]->sid), &sid_everyone) == 0)
access_flags_to_mode(ppace[i]->access_req,
ppace[i]->type,
&fattr->cf_mode,
&other_mask);
- if (compare_sids(&(ppace[i]->sid), &sid_authusers))
+ if (compare_sids(&(ppace[i]->sid), &sid_authusers) == 0)
access_flags_to_mode(ppace[i]->access_req,
ppace[i]->type,
&fattr->cf_mode,
@@ -475,10 +814,10 @@ static int parse_sid(struct cifs_sid *psid, char *end_of_acl)
/* Convert CIFS ACL to POSIX form */
-static int parse_sec_desc(struct cifs_ntsd *pntsd, int acl_len,
- struct cifs_fattr *fattr)
+static int parse_sec_desc(struct cifs_sb_info *cifs_sb,
+ struct cifs_ntsd *pntsd, int acl_len, struct cifs_fattr *fattr)
{
- int rc;
+ int rc = 0;
struct cifs_sid *owner_sid_ptr, *group_sid_ptr;
struct cifs_acl *dacl_ptr; /* no need for SACL ptr */
char *end_of_acl = ((char *)pntsd) + acl_len;
@@ -500,12 +839,26 @@ static int parse_sec_desc(struct cifs_ntsd *pntsd, int acl_len,
le32_to_cpu(pntsd->sacloffset), dacloffset);
/* cifs_dump_mem("owner_sid: ", owner_sid_ptr, 64); */
rc = parse_sid(owner_sid_ptr, end_of_acl);
- if (rc)
+ if (rc) {
+ cFYI(1, "%s: Error %d parsing Owner SID", __func__, rc);
+ return rc;
+ }
+ rc = sid_to_id(cifs_sb, owner_sid_ptr, fattr, SIDOWNER);
+ if (rc) {
+ cFYI(1, "%s: Error %d mapping Owner SID to uid", __func__, rc);
return rc;
+ }
rc = parse_sid(group_sid_ptr, end_of_acl);
- if (rc)
+ if (rc) {
+ cFYI(1, "%s: Error %d mapping Owner SID to gid", __func__, rc);
return rc;
+ }
+ rc = sid_to_id(cifs_sb, group_sid_ptr, fattr, SIDGROUP);
+ if (rc) {
+ cFYI(1, "%s: Error %d mapping Group SID to gid", __func__, rc);
+ return rc;
+ }
if (dacloffset)
parse_dacl(dacl_ptr, end_of_acl, owner_sid_ptr,
@@ -520,7 +873,7 @@ static int parse_sec_desc(struct cifs_ntsd *pntsd, int acl_len,
memcpy((void *)(&(cifscred->gsid)), (void *)group_sid_ptr,
sizeof(struct cifs_sid)); */
- return 0;
+ return rc;
}
@@ -688,7 +1041,7 @@ out:
}
/* Set an ACL on the server */
-static int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
+int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
struct inode *inode, const char *path)
{
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
@@ -727,7 +1080,7 @@ cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr,
rc = PTR_ERR(pntsd);
cERROR(1, "%s: error %d getting sec desc", __func__, rc);
} else {
- rc = parse_sec_desc(pntsd, acllen, fattr);
+ rc = parse_sec_desc(cifs_sb, pntsd, acllen, fattr);
kfree(pntsd);
if (rc)
cERROR(1, "parse sec desc failed rc = %d", rc);
diff --git a/fs/cifs/cifsacl.h b/fs/cifs/cifsacl.h
index c4ae7d03656..5c902c7ce52 100644
--- a/fs/cifs/cifsacl.h
+++ b/fs/cifs/cifsacl.h
@@ -39,6 +39,15 @@
#define ACCESS_ALLOWED 0
#define ACCESS_DENIED 1
+#define SIDOWNER 1
+#define SIDGROUP 2
+#define SIDLEN 150 /* S- 1 revision- 6 authorities- max 5 sub authorities */
+
+#define SID_ID_MAPPED 0
+#define SID_ID_PENDING 1
+#define SID_MAP_EXPIRE (3600 * HZ) /* map entry expires after one hour */
+#define SID_MAP_RETRY (300 * HZ) /* wait 5 minutes for next attempt to map */
+
struct cifs_ntsd {
__le16 revision; /* revision level */
__le16 type;
@@ -74,7 +83,21 @@ struct cifs_wksid {
char sidname[SIDNAMELENGTH];
} __attribute__((packed));
-extern int match_sid(struct cifs_sid *);
+struct cifs_sid_id {
+ unsigned int refcount; /* increment with spinlock, decrement without */
+ unsigned long id;
+ unsigned long time;
+ unsigned long state;
+ char *sidstr;
+ struct rb_node rbnode;
+ struct cifs_sid sid;
+};
+
+#ifdef __KERNEL__
+extern struct key_type cifs_idmap_key_type;
+extern const struct cred *root_cred;
+#endif /* KERNEL */
+
extern int compare_sids(const struct cifs_sid *, const struct cifs_sid *);
#endif /* _CIFSACL_H */
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index a51585f9852..45c3f78c8f8 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -30,12 +30,13 @@
#include <linux/ctype.h>
#include <linux/random.h>
-/* Calculate and return the CIFS signature based on the mac key and SMB PDU */
-/* the 16 byte signature must be allocated by the caller */
-/* Note we only use the 1st eight bytes */
-/* Note that the smb header signature field on input contains the
- sequence number before this function is called */
-
+/*
+ * Calculate and return the CIFS signature based on the mac key and SMB PDU.
+ * The 16 byte signature must be allocated by the caller. Note we only use the
+ * 1st eight bytes and that the smb header signature field on input contains
+ * the sequence number before this function is called. Also, this function
+ * should be called with the server->srv_mutex held.
+ */
static int cifs_calculate_signature(const struct smb_hdr *cifs_pdu,
struct TCP_Server_Info *server, char *signature)
{
@@ -59,7 +60,7 @@ static int cifs_calculate_signature(const struct smb_hdr *cifs_pdu,
server->session_key.response, server->session_key.len);
crypto_shash_update(&server->secmech.sdescmd5->shash,
- cifs_pdu->Protocol, cifs_pdu->smb_buf_length);
+ cifs_pdu->Protocol, be32_to_cpu(cifs_pdu->smb_buf_length));
rc = crypto_shash_final(&server->secmech.sdescmd5->shash, signature);
@@ -209,8 +210,10 @@ int cifs_verify_signature(struct smb_hdr *cifs_pdu,
cpu_to_le32(expected_sequence_number);
cifs_pdu->Signature.Sequence.Reserved = 0;
+ mutex_lock(&server->srv_mutex);
rc = cifs_calculate_signature(cifs_pdu, server,
what_we_think_sig_should_be);
+ mutex_unlock(&server->srv_mutex);
if (rc)
return rc;
@@ -265,10 +268,11 @@ int setup_ntlm_response(struct cifsSesInfo *ses)
}
#ifdef CONFIG_CIFS_WEAK_PW_HASH
-void calc_lanman_hash(const char *password, const char *cryptkey, bool encrypt,
+int calc_lanman_hash(const char *password, const char *cryptkey, bool encrypt,
char *lnm_session_key)
{
int i;
+ int rc;
char password_with_pad[CIFS_ENCPWD_SIZE];
memset(password_with_pad, 0, CIFS_ENCPWD_SIZE);
@@ -279,7 +283,7 @@ void calc_lanman_hash(const char *password, const char *cryptkey, bool encrypt,
memset(lnm_session_key, 0, CIFS_SESS_KEY_SIZE);
memcpy(lnm_session_key, password_with_pad,
CIFS_ENCPWD_SIZE);
- return;
+ return 0;
}
/* calculate old style session key */
@@ -296,10 +300,9 @@ void calc_lanman_hash(const char *password, const char *cryptkey, bool encrypt,
for (i = 0; i < CIFS_ENCPWD_SIZE; i++)
password_with_pad[i] = toupper(password_with_pad[i]);
- SMBencrypt(password_with_pad, cryptkey, lnm_session_key);
+ rc = SMBencrypt(password_with_pad, cryptkey, lnm_session_key);
- /* clear password before we return/free memory */
- memset(password_with_pad, 0, CIFS_ENCPWD_SIZE);
+ return rc;
}
#endif /* CIFS_WEAK_PW_HASH */
@@ -469,15 +472,15 @@ static int calc_ntlmv2_hash(struct cifsSesInfo *ses, char *ntlmv2_hash,
return rc;
}
- /* convert ses->userName to unicode and uppercase */
- len = strlen(ses->userName);
+ /* convert ses->user_name to unicode and uppercase */
+ len = strlen(ses->user_name);
user = kmalloc(2 + (len * 2), GFP_KERNEL);
if (user == NULL) {
cERROR(1, "calc_ntlmv2_hash: user mem alloc failure\n");
rc = -ENOMEM;
goto calc_exit_2;
}
- len = cifs_strtoUCS((__le16 *)user, ses->userName, len, nls_cp);
+ len = cifs_strtoUCS((__le16 *)user, ses->user_name, len, nls_cp);
UniStrupr(user);
crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index f2970136d17..493b74ca564 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -53,7 +53,6 @@ int cifsFYI = 0;
int cifsERROR = 1;
int traceSMB = 0;
unsigned int oplockEnabled = 1;
-unsigned int experimEnabled = 0;
unsigned int linuxExtEnabled = 1;
unsigned int lookupCacheEnabled = 1;
unsigned int multiuser_mount = 0;
@@ -127,30 +126,24 @@ cifs_read_super(struct super_block *sb, void *data,
kfree(cifs_sb);
return rc;
}
+ cifs_sb->bdi.ra_pages = default_backing_dev_info.ra_pages;
-#ifdef CONFIG_CIFS_DFS_UPCALL
- /* copy mount params to sb for use in submounts */
- /* BB: should we move this after the mount so we
- * do not have to do the copy on failed mounts?
- * BB: May be it is better to do simple copy before
- * complex operation (mount), and in case of fail
- * just exit instead of doing mount and attempting
- * undo it if this copy fails?*/
+ /*
+ * Copy mount params to sb for use in submounts. Better to do
+ * the copy here and deal with the error before cleanup gets
+ * complicated post-mount.
+ */
if (data) {
- int len = strlen(data);
- cifs_sb->mountdata = kzalloc(len + 1, GFP_KERNEL);
+ cifs_sb->mountdata = kstrndup(data, PAGE_SIZE, GFP_KERNEL);
if (cifs_sb->mountdata == NULL) {
bdi_destroy(&cifs_sb->bdi);
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
return -ENOMEM;
}
- strncpy(cifs_sb->mountdata, data, len + 1);
- cifs_sb->mountdata[len] = '\0';
}
-#endif
- rc = cifs_mount(sb, cifs_sb, data, devname);
+ rc = cifs_mount(sb, cifs_sb, devname);
if (rc) {
if (!silent)
@@ -163,7 +156,7 @@ cifs_read_super(struct super_block *sb, void *data,
sb->s_bdi = &cifs_sb->bdi;
sb->s_blocksize = CIFS_MAX_MSGSIZE;
sb->s_blocksize_bits = 14; /* default 2**14 = CIFS_MAX_MSGSIZE */
- inode = cifs_root_iget(sb, ROOT_I);
+ inode = cifs_root_iget(sb);
if (IS_ERR(inode)) {
rc = PTR_ERR(inode);
@@ -184,12 +177,12 @@ cifs_read_super(struct super_block *sb, void *data,
else
sb->s_d_op = &cifs_dentry_ops;
-#ifdef CONFIG_CIFS_EXPERIMENTAL
+#ifdef CIFS_NFSD_EXPORT
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
cFYI(1, "export ops supported");
sb->s_export_op = &cifs_export_ops;
}
-#endif /* EXPERIMENTAL */
+#endif /* CIFS_NFSD_EXPORT */
return 0;
@@ -202,12 +195,10 @@ out_no_root:
out_mount_failed:
if (cifs_sb) {
-#ifdef CONFIG_CIFS_DFS_UPCALL
if (cifs_sb->mountdata) {
kfree(cifs_sb->mountdata);
cifs_sb->mountdata = NULL;
}
-#endif
unload_nls(cifs_sb->local_nls);
bdi_destroy(&cifs_sb->bdi);
kfree(cifs_sb);
@@ -231,12 +222,10 @@ cifs_put_super(struct super_block *sb)
rc = cifs_umount(sb, cifs_sb);
if (rc)
cERROR(1, "cifs_umount failed with return code %d", rc);
-#ifdef CONFIG_CIFS_DFS_UPCALL
if (cifs_sb->mountdata) {
kfree(cifs_sb->mountdata);
cifs_sb->mountdata = NULL;
}
-#endif
unload_nls(cifs_sb->local_nls);
bdi_destroy(&cifs_sb->bdi);
@@ -409,8 +398,8 @@ cifs_show_options(struct seq_file *s, struct vfsmount *m)
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER)
seq_printf(s, ",multiuser");
- else if (tcon->ses->userName)
- seq_printf(s, ",username=%s", tcon->ses->userName);
+ else if (tcon->ses->user_name)
+ seq_printf(s, ",username=%s", tcon->ses->user_name);
if (tcon->ses->domainName)
seq_printf(s, ",domain=%s", tcon->ses->domainName);
@@ -618,16 +607,31 @@ static loff_t cifs_llseek(struct file *file, loff_t offset, int origin)
{
/* origin == SEEK_END => we must revalidate the cached file length */
if (origin == SEEK_END) {
- int retval;
-
- /* some applications poll for the file length in this strange
- way so we must seek to end on non-oplocked files by
- setting the revalidate time to zero */
- CIFS_I(file->f_path.dentry->d_inode)->time = 0;
-
- retval = cifs_revalidate_file(file);
- if (retval < 0)
- return (loff_t)retval;
+ int rc;
+ struct inode *inode = file->f_path.dentry->d_inode;
+
+ /*
+ * We need to be sure that all dirty pages are written and the
+ * server has the newest file length.
+ */
+ if (!CIFS_I(inode)->clientCanCacheRead && inode->i_mapping &&
+ inode->i_mapping->nrpages != 0) {
+ rc = filemap_fdatawait(inode->i_mapping);
+ if (rc) {
+ mapping_set_error(inode->i_mapping, rc);
+ return rc;
+ }
+ }
+ /*
+ * Some applications poll for the file length in this strange
+ * way so we must seek to end on non-oplocked files by
+ * setting the revalidate time to zero.
+ */
+ CIFS_I(inode)->time = 0;
+
+ rc = cifs_revalidate_file_attr(file);
+ if (rc < 0)
+ return (loff_t)rc;
}
return generic_file_llseek_unlocked(file, offset, origin);
}
@@ -760,10 +764,11 @@ const struct file_operations cifs_file_strict_ops = {
};
const struct file_operations cifs_file_direct_ops = {
- /* no aio, no readv -
- BB reevaluate whether they can be done with directio, no cache */
- .read = cifs_user_read,
- .write = cifs_user_write,
+ /* BB reevaluate whether they can be done with directio, no cache */
+ .read = do_sync_read,
+ .write = do_sync_write,
+ .aio_read = cifs_user_readv,
+ .aio_write = cifs_user_writev,
.open = cifs_open,
.release = cifs_close,
.lock = cifs_lock,
@@ -815,10 +820,11 @@ const struct file_operations cifs_file_strict_nobrl_ops = {
};
const struct file_operations cifs_file_direct_nobrl_ops = {
- /* no mmap, no aio, no readv -
- BB reevaluate whether they can be done with directio, no cache */
- .read = cifs_user_read,
- .write = cifs_user_write,
+ /* BB reevaluate whether they can be done with directio, no cache */
+ .read = do_sync_read,
+ .write = do_sync_write,
+ .aio_read = cifs_user_readv,
+ .aio_write = cifs_user_writev,
.open = cifs_open,
.release = cifs_close,
.fsync = cifs_fsync,
@@ -981,10 +987,10 @@ init_cifs(void)
int rc = 0;
cifs_proc_init();
INIT_LIST_HEAD(&cifs_tcp_ses_list);
-#ifdef CONFIG_CIFS_EXPERIMENTAL
+#ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
INIT_LIST_HEAD(&GlobalDnotifyReqList);
INIT_LIST_HEAD(&GlobalDnotifyRsp_Q);
-#endif
+#endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
/*
* Initialize Global counters
*/
@@ -1033,22 +1039,33 @@ init_cifs(void)
if (rc)
goto out_destroy_mids;
- rc = register_filesystem(&cifs_fs_type);
- if (rc)
- goto out_destroy_request_bufs;
#ifdef CONFIG_CIFS_UPCALL
rc = register_key_type(&cifs_spnego_key_type);
if (rc)
- goto out_unregister_filesystem;
-#endif
+ goto out_destroy_request_bufs;
+#endif /* CONFIG_CIFS_UPCALL */
+
+#ifdef CONFIG_CIFS_ACL
+ rc = init_cifs_idmap();
+ if (rc)
+ goto out_register_key_type;
+#endif /* CONFIG_CIFS_ACL */
+
+ rc = register_filesystem(&cifs_fs_type);
+ if (rc)
+ goto out_init_cifs_idmap;
return 0;
-#ifdef CONFIG_CIFS_UPCALL
-out_unregister_filesystem:
- unregister_filesystem(&cifs_fs_type);
+out_init_cifs_idmap:
+#ifdef CONFIG_CIFS_ACL
+ exit_cifs_idmap();
+out_register_key_type:
#endif
+#ifdef CONFIG_CIFS_UPCALL
+ unregister_key_type(&cifs_spnego_key_type);
out_destroy_request_bufs:
+#endif
cifs_destroy_request_bufs();
out_destroy_mids:
cifs_destroy_mids();
@@ -1070,6 +1087,10 @@ exit_cifs(void)
#ifdef CONFIG_CIFS_DFS_UPCALL
cifs_dfs_release_automount_timer();
#endif
+#ifdef CONFIG_CIFS_ACL
+ cifs_destroy_idmaptrees();
+ exit_cifs_idmap();
+#endif
#ifdef CONFIG_CIFS_UPCALL
unregister_key_type(&cifs_spnego_key_type);
#endif
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index a9371b6578c..64313f778eb 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -47,7 +47,7 @@ extern void cifs_sb_deactive(struct super_block *sb);
/* Functions related to inodes */
extern const struct inode_operations cifs_dir_inode_ops;
-extern struct inode *cifs_root_iget(struct super_block *, unsigned long);
+extern struct inode *cifs_root_iget(struct super_block *);
extern int cifs_create(struct inode *, struct dentry *, int,
struct nameidata *);
extern struct dentry *cifs_lookup(struct inode *, struct dentry *,
@@ -59,9 +59,11 @@ extern int cifs_mkdir(struct inode *, struct dentry *, int);
extern int cifs_rmdir(struct inode *, struct dentry *);
extern int cifs_rename(struct inode *, struct dentry *, struct inode *,
struct dentry *);
+extern int cifs_revalidate_file_attr(struct file *filp);
+extern int cifs_revalidate_dentry_attr(struct dentry *);
extern int cifs_revalidate_file(struct file *filp);
extern int cifs_revalidate_dentry(struct dentry *);
-extern void cifs_invalidate_mapping(struct inode *inode);
+extern int cifs_invalidate_mapping(struct inode *inode);
extern int cifs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
extern int cifs_setattr(struct dentry *, struct iattr *);
@@ -80,12 +82,12 @@ extern const struct file_operations cifs_file_strict_nobrl_ops;
extern int cifs_open(struct inode *inode, struct file *file);
extern int cifs_close(struct inode *inode, struct file *file);
extern int cifs_closedir(struct inode *inode, struct file *file);
-extern ssize_t cifs_user_read(struct file *file, char __user *read_data,
- size_t read_size, loff_t *poffset);
+extern ssize_t cifs_user_readv(struct kiocb *iocb, const struct iovec *iov,
+ unsigned long nr_segs, loff_t pos);
extern ssize_t cifs_strict_readv(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos);
-extern ssize_t cifs_user_write(struct file *file, const char __user *write_data,
- size_t write_size, loff_t *poffset);
+extern ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov,
+ unsigned long nr_segs, loff_t pos);
extern ssize_t cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos);
extern int cifs_lock(struct file *, int, struct file_lock *);
@@ -123,9 +125,9 @@ extern ssize_t cifs_getxattr(struct dentry *, const char *, void *, size_t);
extern ssize_t cifs_listxattr(struct dentry *, char *, size_t);
extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
-#ifdef CONFIG_CIFS_EXPERIMENTAL
+#ifdef CIFS_NFSD_EXPORT
extern const struct export_operations cifs_export_ops;
-#endif /* EXPERIMENTAL */
+#endif /* CIFS_NFSD_EXPORT */
-#define CIFS_VERSION "1.71"
+#define CIFS_VERSION "1.72"
#endif /* _CIFSFS_H */
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 17afb0fbcae..76b4517e74b 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -37,10 +37,9 @@
#define MAX_TREE_SIZE (2 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1)
#define MAX_SERVER_SIZE 15
-#define MAX_SHARE_SIZE 64 /* used to be 20, this should still be enough */
-#define MAX_USERNAME_SIZE 32 /* 32 is to allow for 15 char names + null
- termination then *2 for unicode versions */
-#define MAX_PASSWORD_SIZE 512 /* max for windows seems to be 256 wide chars */
+#define MAX_SHARE_SIZE 80
+#define MAX_USERNAME_SIZE 256 /* reasonable maximum for current servers */
+#define MAX_PASSWORD_SIZE 512 /* max for windows seems to be 256 wide chars */
#define CIFS_MIN_RCV_POOL 4
@@ -92,7 +91,8 @@ enum statusEnum {
CifsNew = 0,
CifsGood,
CifsExiting,
- CifsNeedReconnect
+ CifsNeedReconnect,
+ CifsNeedNegotiate
};
enum securityEnum {
@@ -274,7 +274,8 @@ struct cifsSesInfo {
int capabilities;
char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for
TCP names - will ipv6 and sctp addresses fit? */
- char userName[MAX_USERNAME_SIZE + 1];
+ char *user_name; /* must not be null except during init of sess
+ and after mount option parsing we fill it */
char *domainName;
char *password;
struct session_key auth_key;
@@ -780,10 +781,12 @@ GLOBAL_EXTERN spinlock_t cifs_tcp_ses_lock;
*/
GLOBAL_EXTERN spinlock_t cifs_file_list_lock;
+#ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
/* Outstanding dir notify requests */
GLOBAL_EXTERN struct list_head GlobalDnotifyReqList;
/* DirNotify response queue */
GLOBAL_EXTERN struct list_head GlobalDnotifyRsp_Q;
+#endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
/*
* Global transaction id (XID) information
@@ -817,7 +820,6 @@ GLOBAL_EXTERN unsigned int multiuser_mount; /* if enabled allows new sessions
have the uid/password or Kerberos credential
or equivalent for current user */
GLOBAL_EXTERN unsigned int oplockEnabled;
-GLOBAL_EXTERN unsigned int experimEnabled;
GLOBAL_EXTERN unsigned int lookupCacheEnabled;
GLOBAL_EXTERN unsigned int global_secflags; /* if on, session setup sent
with more secure ntlmssp2 challenge/resp */
@@ -831,6 +833,11 @@ GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/
/* reconnect after this many failed echo attempts */
GLOBAL_EXTERN unsigned short echo_retries;
+GLOBAL_EXTERN struct rb_root uidtree;
+GLOBAL_EXTERN struct rb_root gidtree;
+GLOBAL_EXTERN spinlock_t siduidlock;
+GLOBAL_EXTERN spinlock_t sidgidlock;
+
void cifs_oplock_break(struct work_struct *work);
void cifs_oplock_break_get(struct cifsFileInfo *cfile);
void cifs_oplock_break_put(struct cifsFileInfo *cfile);
diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h
index b5c8cc5d7a7..de3aa285de0 100644
--- a/fs/cifs/cifspdu.h
+++ b/fs/cifs/cifspdu.h
@@ -397,9 +397,9 @@
#define GETU32(var) (*((__u32 *)var)) /* BB check for endian issues */
struct smb_hdr {
- __u32 smb_buf_length; /* big endian on wire *//* BB length is only two
- or three bytes - with one or two byte type preceding it that are
- zero - we could mask the type byte off just in case BB */
+ __be32 smb_buf_length; /* BB length is only two (rarely three) bytes,
+ with one or two byte "type" preceding it that will be
+ zero - we could mask the type byte off */
__u8 Protocol[4];
__u8 Command;
union {
@@ -428,43 +428,28 @@ struct smb_hdr {
__u8 WordCount;
} __attribute__((packed));
-/* given a pointer to an smb_hdr retrieve a char pointer to the byte count */
-#define BCC(smb_var) ((unsigned char *)(smb_var) + sizeof(struct smb_hdr) + \
- (2 * (smb_var)->WordCount))
+/* given a pointer to an smb_hdr, retrieve a void pointer to the ByteCount */
+static inline void *
+BCC(struct smb_hdr *smb)
+{
+ return (void *)smb + sizeof(*smb) + 2 * smb->WordCount;
+}
/* given a pointer to an smb_hdr retrieve the pointer to the byte area */
#define pByteArea(smb_var) (BCC(smb_var) + 2)
-/* get the converted ByteCount for a SMB packet and return it */
-static inline __u16
-get_bcc(struct smb_hdr *hdr)
-{
- __u16 *bc_ptr = (__u16 *)BCC(hdr);
-
- return get_unaligned(bc_ptr);
-}
-
/* get the unconverted ByteCount for a SMB packet and return it */
static inline __u16
-get_bcc_le(struct smb_hdr *hdr)
+get_bcc(struct smb_hdr *hdr)
{
__le16 *bc_ptr = (__le16 *)BCC(hdr);
return get_unaligned_le16(bc_ptr);
}
-/* set the ByteCount for a SMB packet in host-byte order */
-static inline void
-put_bcc(__u16 count, struct smb_hdr *hdr)
-{
- __u16 *bc_ptr = (__u16 *)BCC(hdr);
-
- put_unaligned(count, bc_ptr);
-}
-
/* set the ByteCount for a SMB packet in little-endian */
static inline void
-put_bcc_le(__u16 count, struct smb_hdr *hdr)
+put_bcc(__u16 count, struct smb_hdr *hdr)
{
__le16 *bc_ptr = (__le16 *)BCC(hdr);
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 8096f27ad9a..6e69e06a30b 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -53,6 +53,9 @@ do { \
cFYI(1, "CIFS VFS: leaving %s (xid = %d) rc = %d", \
__func__, curr_xid, (int)rc); \
} while (0)
+extern int init_cifs_idmap(void);
+extern void exit_cifs_idmap(void);
+extern void cifs_destroy_idmaptrees(void);
extern char *build_path_from_dentry(struct dentry *);
extern char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb,
struct cifsTconInfo *tcon);
@@ -90,7 +93,6 @@ extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, bool);
extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
extern unsigned int smbCalcSize(struct smb_hdr *ptr);
-extern unsigned int smbCalcSize_LE(struct smb_hdr *ptr);
extern int decode_negTokenInit(unsigned char *security_blob, int length,
struct TCP_Server_Info *server);
extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len);
@@ -143,8 +145,10 @@ extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
extern int mode_to_cifs_acl(struct inode *inode, const char *path, __u64);
extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
const char *, u32 *);
+extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
+ const char *);
-extern int cifs_mount(struct super_block *, struct cifs_sb_info *, char *,
+extern int cifs_mount(struct super_block *, struct cifs_sb_info *,
const char *);
extern int cifs_umount(struct super_block *, struct cifs_sb_info *);
extern void cifs_dfs_release_automount_timer(void);
@@ -304,12 +308,13 @@ extern int CIFSSMBUnixQuerySymLink(const int xid,
struct cifsTconInfo *tcon,
const unsigned char *searchName, char **syminfo,
const struct nls_table *nls_codepage);
+#ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL
extern int CIFSSMBQueryReparseLinkInfo(const int xid,
struct cifsTconInfo *tcon,
const unsigned char *searchName,
char *symlinkinfo, const int buflen, __u16 fid,
const struct nls_table *nls_codepage);
-
+#endif /* temporarily unused until cifs_symlink fixed */
extern int CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon,
const char *fileName, const int disposition,
const int access_flags, const int omode,
@@ -348,8 +353,6 @@ extern int CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon,
const unsigned char *searchName, __u64 *inode_number,
const struct nls_table *nls_codepage,
int remap_special_chars);
-extern int cifsConvertToUCS(__le16 *target, const char *source, int maxlen,
- const struct nls_table *cp, int mapChars);
extern int CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
const __u16 netfid, const __u64 len,
@@ -383,9 +386,15 @@ extern void cifs_crypto_shash_release(struct TCP_Server_Info *);
extern int calc_seckey(struct cifsSesInfo *);
#ifdef CONFIG_CIFS_WEAK_PW_HASH
-extern void calc_lanman_hash(const char *password, const char *cryptkey,
+extern int calc_lanman_hash(const char *password, const char *cryptkey,
bool encrypt, char *lnm_session_key);
#endif /* CIFS_WEAK_PW_HASH */
+#ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* unused temporarily */
+extern int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon,
+ const int notify_subdirs, const __u16 netfid,
+ __u32 filter, struct file *file, int multishot,
+ const struct nls_table *nls_codepage);
+#endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
extern int CIFSSMBCopy(int xid,
struct cifsTconInfo *source_tcon,
const char *fromName,
@@ -393,10 +402,6 @@ extern int CIFSSMBCopy(int xid,
const char *toName, const int flags,
const struct nls_table *nls_codepage,
int remap_special_chars);
-extern int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon,
- const int notify_subdirs, const __u16 netfid,
- __u32 filter, struct file *file, int multishot,
- const struct nls_table *nls_codepage);
extern ssize_t CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon,
const unsigned char *searchName,
const unsigned char *ea_name, char *EAData,
@@ -427,9 +432,6 @@ extern int CIFSCheckMFSymlink(struct cifs_fattr *fattr,
struct cifs_sb_info *cifs_sb, int xid);
extern int mdfour(unsigned char *, unsigned char *, int);
extern int E_md4hash(const unsigned char *passwd, unsigned char *p16);
-extern void SMBencrypt(unsigned char *passwd, const unsigned char *c8,
- unsigned char *p24);
-extern void E_P16(unsigned char *p14, unsigned char *p16);
-extern void E_P24(unsigned char *p21, const unsigned char *c8,
+extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8,
unsigned char *p24);
#endif /* _CIFSPROTO_H */
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 2644a5d6cc6..83df937b814 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -142,9 +142,9 @@ cifs_reconnect_tcon(struct cifsTconInfo *tcon, int smb_command)
*/
while (server->tcpStatus == CifsNeedReconnect) {
wait_event_interruptible_timeout(server->response_q,
- (server->tcpStatus == CifsGood), 10 * HZ);
+ (server->tcpStatus != CifsNeedReconnect), 10 * HZ);
- /* is TCP session is reestablished now ?*/
+ /* are we still trying to reconnect? */
if (server->tcpStatus != CifsNeedReconnect)
break;
@@ -339,12 +339,13 @@ static int validate_t2(struct smb_t2_rsp *pSMB)
get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024)
goto vt2_err;
- /* check that bcc is at least as big as parms + data */
- /* check that bcc is less than negotiated smb buffer */
total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount);
if (total_size >= 512)
goto vt2_err;
+ /* check that bcc is at least as big as parms + data, and that it is
+ * less than negotiated smb buffer
+ */
total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount);
if (total_size > get_bcc(&pSMB->hdr) ||
total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE)
@@ -357,6 +358,13 @@ vt2_err:
return -EINVAL;
}
+static inline void inc_rfc1001_len(void *pSMB, int count)
+{
+ struct smb_hdr *hdr = (struct smb_hdr *)pSMB;
+
+ be32_add_cpu(&hdr->smb_buf_length, count);
+}
+
int
CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
{
@@ -409,7 +417,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
count += strlen(protocols[i].name) + 1;
/* null at end of source and target buffers anyway */
}
- pSMB->hdr.smb_buf_length += count;
+ inc_rfc1001_len(pSMB, count);
pSMB->ByteCount = cpu_to_le16(count);
rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
@@ -541,10 +549,6 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
server->secType = RawNTLMSSP;
else if (secFlags & CIFSSEC_MAY_LANMAN)
server->secType = LANMAN;
-/* #ifdef CONFIG_CIFS_EXPERIMENTAL
- else if (secFlags & CIFSSEC_MAY_PLNTXT)
- server->secType = ??
-#endif */
else {
rc = -EOPNOTSUPP;
cERROR(1, "Invalid security type");
@@ -578,7 +582,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) &&
(server->capabilities & CAP_EXTENDED_SECURITY)) {
- count = pSMBr->ByteCount;
+ count = get_bcc(&pSMBr->hdr);
if (count < 16) {
rc = -EIO;
goto neg_err_exit;
@@ -729,12 +733,12 @@ CIFSSMBEcho(struct TCP_Server_Info *server)
return rc;
/* set up echo request */
- smb->hdr.Tid = cpu_to_le16(0xffff);
+ smb->hdr.Tid = 0xffff;
smb->hdr.WordCount = 1;
put_unaligned_le16(1, &smb->EchoCount);
- put_bcc_le(1, &smb->hdr);
+ put_bcc(1, &smb->hdr);
smb->Data[0] = 'a';
- smb->hdr.smb_buf_length += 3;
+ inc_rfc1001_len(smb, 3);
rc = cifs_call_async(server, (struct smb_hdr *)smb,
cifs_echo_callback, server);
@@ -852,7 +856,7 @@ PsxDelete:
pSMB->TotalParameterCount = pSMB->ParameterCount;
pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK);
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
@@ -898,7 +902,7 @@ DelFileRetry:
pSMB->SearchAttributes =
cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM);
pSMB->BufferFormat = 0x04;
- pSMB->hdr.smb_buf_length += name_len + 1;
+ inc_rfc1001_len(pSMB, name_len + 1);
pSMB->ByteCount = cpu_to_le16(name_len + 1);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
@@ -942,7 +946,7 @@ RmDirRetry:
}
pSMB->BufferFormat = 0x04;
- pSMB->hdr.smb_buf_length += name_len + 1;
+ inc_rfc1001_len(pSMB, name_len + 1);
pSMB->ByteCount = cpu_to_le16(name_len + 1);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
@@ -985,7 +989,7 @@ MkDirRetry:
}
pSMB->BufferFormat = 0x04;
- pSMB->hdr.smb_buf_length += name_len + 1;
+ inc_rfc1001_len(pSMB, name_len + 1);
pSMB->ByteCount = cpu_to_le16(name_len + 1);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
@@ -1063,7 +1067,7 @@ PsxCreat:
pSMB->TotalParameterCount = pSMB->ParameterCount;
pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN);
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
@@ -1075,7 +1079,7 @@ PsxCreat:
cFYI(1, "copying inode info");
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- if (rc || (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP))) {
+ if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) {
rc = -EIO; /* bad smb */
goto psx_create_err;
}
@@ -1096,7 +1100,7 @@ PsxCreat:
pRetData->Type = cpu_to_le32(-1); /* unknown */
cFYI(DBG2, "unknown type");
} else {
- if (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP)
+ if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)
+ sizeof(FILE_UNIX_BASIC_INFO)) {
cERROR(1, "Open response data too small");
pRetData->Type = cpu_to_le32(-1);
@@ -1228,7 +1232,7 @@ OldOpenRetry:
pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY);
pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition));
count += name_len;
- pSMB->hdr.smb_buf_length += count;
+ inc_rfc1001_len(pSMB, count);
pSMB->ByteCount = cpu_to_le16(count);
/* long_op set to 1 to allow for oplock break timeouts */
@@ -1341,7 +1345,7 @@ openRetry:
SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY;
count += name_len;
- pSMB->hdr.smb_buf_length += count;
+ inc_rfc1001_len(pSMB, count);
pSMB->ByteCount = cpu_to_le16(count);
/* long_op set to 1 to allow for oplock break timeouts */
@@ -1426,7 +1430,7 @@ CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, const int netfid,
}
iov[0].iov_base = (char *)pSMB;
- iov[0].iov_len = pSMB->hdr.smb_buf_length + 4;
+ iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4;
rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */,
&resp_buf_type, CIFS_LOG_ERROR);
cifs_stats_inc(&tcon->num_reads);
@@ -1560,7 +1564,7 @@ CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF);
pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16);
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
if (wct == 14)
pSMB->ByteCount = cpu_to_le16(byte_count);
@@ -1644,11 +1648,12 @@ CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF);
pSMB->DataLengthHigh = cpu_to_le16(count >> 16);
- smb_hdr_len = pSMB->hdr.smb_buf_length + 1; /* hdr + 1 byte pad */
+ /* header + 1 byte pad */
+ smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1;
if (wct == 14)
- pSMB->hdr.smb_buf_length += count+1;
+ inc_rfc1001_len(pSMB, count + 1);
else /* wct == 12 */
- pSMB->hdr.smb_buf_length += count+5; /* smb data starts later */
+ inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */
if (wct == 14)
pSMB->ByteCount = cpu_to_le16(count + 1);
else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ {
@@ -1748,7 +1753,7 @@ CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
/* oplock break */
count = 0;
}
- pSMB->hdr.smb_buf_length += count;
+ inc_rfc1001_len(pSMB, count);
pSMB->ByteCount = cpu_to_le16(count);
if (waitFlag) {
@@ -1839,14 +1844,14 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
pSMB->Fid = smb_file_id;
pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK);
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
if (waitFlag) {
rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned);
} else {
iov[0].iov_base = (char *)pSMB;
- iov[0].iov_len = pSMB->hdr.smb_buf_length + 4;
+ iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4;
rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */,
&resp_buf_type, timeout);
pSMB = NULL; /* request buf already freed by SendReceive2. Do
@@ -1862,7 +1867,7 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
__u16 data_count;
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- if (rc || (pSMBr->ByteCount < sizeof(struct cifs_posix_lock))) {
+ if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) {
rc = -EIO; /* bad smb */
goto plk_err_exit;
}
@@ -1884,10 +1889,10 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
__constant_cpu_to_le16(CIFS_WRLCK))
pLockData->fl_type = F_WRLCK;
- pLockData->fl_start = parm_data->start;
- pLockData->fl_end = parm_data->start +
- parm_data->length - 1;
- pLockData->fl_pid = parm_data->pid;
+ pLockData->fl_start = le64_to_cpu(parm_data->start);
+ pLockData->fl_end = pLockData->fl_start +
+ le64_to_cpu(parm_data->length) - 1;
+ pLockData->fl_pid = le32_to_cpu(parm_data->pid);
}
}
@@ -2012,7 +2017,7 @@ renameRetry:
}
count = 1 /* 1st signature byte */ + name_len + name_len2;
- pSMB->hdr.smb_buf_length += count;
+ inc_rfc1001_len(pSMB, count);
pSMB->ByteCount = cpu_to_le16(count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -2092,7 +2097,7 @@ int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon,
pSMB->InformationLevel =
cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION);
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
@@ -2159,7 +2164,7 @@ copyRetry:
}
count = 1 /* 1st signature byte */ + name_len + name_len2;
- pSMB->hdr.smb_buf_length += count;
+ inc_rfc1001_len(pSMB, count);
pSMB->ByteCount = cpu_to_le16(count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -2249,7 +2254,7 @@ createSymLinkRetry:
pSMB->DataOffset = cpu_to_le16(offset);
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK);
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
@@ -2335,7 +2340,7 @@ createHardLinkRetry:
pSMB->DataOffset = cpu_to_le16(offset);
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK);
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
@@ -2406,7 +2411,7 @@ winCreateHardLinkRetry:
}
count = 1 /* string type byte */ + name_len + name_len2;
- pSMB->hdr.smb_buf_length += count;
+ inc_rfc1001_len(pSMB, count);
pSMB->ByteCount = cpu_to_le16(count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -2477,7 +2482,7 @@ querySymLinkRetry:
pSMB->ParameterCount = pSMB->TotalParameterCount;
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK);
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -2489,7 +2494,7 @@ querySymLinkRetry:
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
/* BB also check enough total bytes returned */
- if (rc || (pSMBr->ByteCount < 2))
+ if (rc || get_bcc(&pSMBr->hdr) < 2)
rc = -EIO;
else {
bool is_unicode;
@@ -2516,7 +2521,17 @@ querySymLinkRetry:
return rc;
}
-#ifdef CONFIG_CIFS_EXPERIMENTAL
+#ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL
+/*
+ * Recent Windows versions now create symlinks more frequently
+ * and they use the "reparse point" mechanism below. We can of course
+ * do symlinks nicely to Samba and other servers which support the
+ * CIFS Unix Extensions and we can also do SFU symlinks and "client only"
+ * "MF" symlinks optionally, but for recent Windows we really need to
+ * reenable the code below and fix the cifs_symlink callers to handle this.
+ * In the interim this code has been moved to its own config option so
+ * it is not compiled in by default until callers fixed up and more tested.
+ */
int
CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
const unsigned char *searchName,
@@ -2561,14 +2576,14 @@ CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
} else { /* decode response */
__u32 data_offset = le32_to_cpu(pSMBr->DataOffset);
__u32 data_count = le32_to_cpu(pSMBr->DataCount);
- if ((pSMBr->ByteCount < 2) || (data_offset > 512)) {
- /* BB also check enough total bytes returned */
+ if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) {
+ /* BB also check enough total bytes returned */
rc = -EIO; /* bad smb */
goto qreparse_out;
}
if (data_count && (data_count < 2048)) {
char *end_of_smb = 2 /* sizeof byte count */ +
- pSMBr->ByteCount + (char *)&pSMBr->ByteCount;
+ get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount;
struct reparse_data *reparse_buf =
(struct reparse_data *)
@@ -2618,7 +2633,7 @@ qreparse_out:
return rc;
}
-#endif /* CIFS_EXPERIMENTAL */
+#endif /* CIFS_SYMLINK_EXPERIMENTAL */ /* BB temporarily unused */
#ifdef CONFIG_CIFS_POSIX
@@ -2814,7 +2829,7 @@ queryAclRetry:
pSMB->ParameterCount = pSMB->TotalParameterCount;
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL);
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -2826,8 +2841,8 @@ queryAclRetry:
/* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- if (rc || (pSMBr->ByteCount < 2))
/* BB also check enough total bytes returned */
+ if (rc || get_bcc(&pSMBr->hdr) < 2)
rc = -EIO; /* bad smb */
else {
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
@@ -2908,7 +2923,7 @@ setAclRetry:
pSMB->ParameterCount = cpu_to_le16(params);
pSMB->TotalParameterCount = pSMB->ParameterCount;
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
@@ -2966,7 +2981,7 @@ GetExtAttrRetry:
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS);
pSMB->Pad = 0;
pSMB->Fid = netfid;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->t2.ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -2976,8 +2991,8 @@ GetExtAttrRetry:
} else {
/* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- if (rc || (pSMBr->ByteCount < 2))
/* BB also check enough total bytes returned */
+ if (rc || get_bcc(&pSMBr->hdr) < 2)
/* If rc should we check for EOPNOSUPP and
disable the srvino flag? or in caller? */
rc = -EIO; /* bad smb */
@@ -3052,6 +3067,7 @@ validate_ntransact(char *buf, char **ppparm, char **ppdata,
char *end_of_smb;
__u32 data_count, data_offset, parm_count, parm_offset;
struct smb_com_ntransact_rsp *pSMBr;
+ u16 bcc;
*pdatalen = 0;
*pparmlen = 0;
@@ -3061,8 +3077,8 @@ validate_ntransact(char *buf, char **ppparm, char **ppdata,
pSMBr = (struct smb_com_ntransact_rsp *)buf;
- /* ByteCount was converted from little endian in SendReceive */
- end_of_smb = 2 /* sizeof byte count */ + pSMBr->ByteCount +
+ bcc = get_bcc(&pSMBr->hdr);
+ end_of_smb = 2 /* sizeof byte count */ + bcc +
(char *)&pSMBr->ByteCount;
data_offset = le32_to_cpu(pSMBr->DataOffset);
@@ -3088,7 +3104,7 @@ validate_ntransact(char *buf, char **ppparm, char **ppdata,
*ppdata, data_count, (data_count + *ppdata),
end_of_smb, pSMBr);
return -EINVAL;
- } else if (parm_count + data_count > pSMBr->ByteCount) {
+ } else if (parm_count + data_count > bcc) {
cFYI(1, "parm count and data count larger than SMB");
return -EINVAL;
}
@@ -3124,9 +3140,9 @@ CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid,
pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP |
CIFS_ACL_DACL);
pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */
- pSMB->hdr.smb_buf_length += 11;
+ inc_rfc1001_len(pSMB, 11);
iov[0].iov_base = (char *)pSMB;
- iov[0].iov_len = pSMB->hdr.smb_buf_length + 4;
+ iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4;
rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type,
0);
@@ -3235,10 +3251,9 @@ setCifsAclRetry:
memcpy((char *) &pSMBr->hdr.Protocol + data_offset,
(char *) pntsd,
acllen);
- pSMB->hdr.smb_buf_length += (byte_count + data_count);
-
+ inc_rfc1001_len(pSMB, byte_count + data_count);
} else
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
@@ -3289,7 +3304,7 @@ QInfRetry:
}
pSMB->BufferFormat = 0x04;
name_len++; /* account for buffer type byte */
- pSMB->hdr.smb_buf_length += (__u16) name_len;
+ inc_rfc1001_len(pSMB, (__u16)name_len);
pSMB->ByteCount = cpu_to_le16(name_len);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -3364,7 +3379,7 @@ QFileInfoRetry:
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
pSMB->Pad = 0;
pSMB->Fid = netfid;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
@@ -3375,7 +3390,7 @@ QFileInfoRetry:
if (rc) /* BB add auto retry on EOPNOTSUPP? */
rc = -EIO;
- else if (pSMBr->ByteCount < 40)
+ else if (get_bcc(&pSMBr->hdr) < 40)
rc = -EIO; /* bad smb */
else if (pFindData) {
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
@@ -3451,7 +3466,7 @@ QPathInfoRetry:
else
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -3463,9 +3478,9 @@ QPathInfoRetry:
if (rc) /* BB add auto retry on EOPNOTSUPP? */
rc = -EIO;
- else if (!legacy && (pSMBr->ByteCount < 40))
+ else if (!legacy && get_bcc(&pSMBr->hdr) < 40)
rc = -EIO; /* bad smb */
- else if (legacy && (pSMBr->ByteCount < 24))
+ else if (legacy && get_bcc(&pSMBr->hdr) < 24)
rc = -EIO; /* 24 or 26 expected but we do not read
last field */
else if (pFindData) {
@@ -3532,7 +3547,7 @@ UnixQFileInfoRetry:
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
pSMB->Pad = 0;
pSMB->Fid = netfid;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
@@ -3541,7 +3556,7 @@ UnixQFileInfoRetry:
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) {
+ if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) {
cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n"
"Unix Extensions can be disabled on mount "
"by specifying the nosfu mount option.");
@@ -3617,7 +3632,7 @@ UnixQPathInfoRetry:
pSMB->ParameterCount = pSMB->TotalParameterCount;
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -3627,7 +3642,7 @@ UnixQPathInfoRetry:
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) {
+ if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) {
cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n"
"Unix Extensions can be disabled on mount "
"by specifying the nosfu mount option.");
@@ -3731,7 +3746,7 @@ findFirstRetry:
/* BB what should we set StorageType to? Does it matter? BB */
pSMB->SearchStorageType = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -3860,7 +3875,7 @@ int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,
byte_count = params + 1 /* pad */ ;
pSMB->TotalParameterCount = cpu_to_le16(params);
pSMB->ParameterCount = pSMB->TotalParameterCount;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -4022,7 +4037,7 @@ GetInodeNumberRetry:
pSMB->ParameterCount = pSMB->TotalParameterCount;
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO);
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -4032,8 +4047,8 @@ GetInodeNumberRetry:
} else {
/* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- if (rc || (pSMBr->ByteCount < 2))
/* BB also check enough total bytes returned */
+ if (rc || get_bcc(&pSMBr->hdr) < 2)
/* If rc should we check for EOPNOSUPP and
disable the srvino flag? or in caller? */
rc = -EIO; /* bad smb */
@@ -4246,7 +4261,7 @@ getDFSRetry:
pSMB->ParameterCount = cpu_to_le16(params);
pSMB->TotalParameterCount = pSMB->ParameterCount;
pSMB->MaxReferralLevel = cpu_to_le16(3);
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
@@ -4258,13 +4273,13 @@ getDFSRetry:
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
/* BB Also check if enough total bytes returned? */
- if (rc || (pSMBr->ByteCount < 17)) {
+ if (rc || get_bcc(&pSMBr->hdr) < 17) {
rc = -EIO; /* bad smb */
goto GetDFSRefExit;
}
cFYI(1, "Decoding GetDFSRefer response BCC: %d Offset %d",
- pSMBr->ByteCount,
+ get_bcc(&pSMBr->hdr),
le16_to_cpu(pSMBr->t2.DataOffset));
/* parse returned result into more usable form */
@@ -4320,7 +4335,7 @@ oldQFSInfoRetry:
pSMB->Reserved3 = 0;
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION);
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -4330,12 +4345,12 @@ oldQFSInfoRetry:
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- if (rc || (pSMBr->ByteCount < 18))
+ if (rc || get_bcc(&pSMBr->hdr) < 18)
rc = -EIO; /* bad smb */
else {
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
cFYI(1, "qfsinf resp BCC: %d Offset %d",
- pSMBr->ByteCount, data_offset);
+ get_bcc(&pSMBr->hdr), data_offset);
response_data = (FILE_SYSTEM_ALLOC_INFO *)
(((char *) &pSMBr->hdr.Protocol) + data_offset);
@@ -4399,7 +4414,7 @@ QFSInfoRetry:
pSMB->Reserved3 = 0;
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO);
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -4409,7 +4424,7 @@ QFSInfoRetry:
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- if (rc || (pSMBr->ByteCount < 24))
+ if (rc || get_bcc(&pSMBr->hdr) < 24)
rc = -EIO; /* bad smb */
else {
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
@@ -4479,7 +4494,7 @@ QFSAttributeRetry:
pSMB->Reserved3 = 0;
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO);
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -4489,7 +4504,7 @@ QFSAttributeRetry:
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- if (rc || (pSMBr->ByteCount < 13)) {
+ if (rc || get_bcc(&pSMBr->hdr) < 13) {
/* BB also check if enough bytes returned */
rc = -EIO; /* bad smb */
} else {
@@ -4550,7 +4565,7 @@ QFSDeviceRetry:
pSMB->Reserved3 = 0;
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO);
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -4560,7 +4575,8 @@ QFSDeviceRetry:
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- if (rc || (pSMBr->ByteCount < sizeof(FILE_SYSTEM_DEVICE_INFO)))
+ if (rc || get_bcc(&pSMBr->hdr) <
+ sizeof(FILE_SYSTEM_DEVICE_INFO))
rc = -EIO; /* bad smb */
else {
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
@@ -4619,7 +4635,7 @@ QFSUnixRetry:
pSMB->Reserved3 = 0;
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO);
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -4629,7 +4645,7 @@ QFSUnixRetry:
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- if (rc || (pSMBr->ByteCount < 13)) {
+ if (rc || get_bcc(&pSMBr->hdr) < 13) {
rc = -EIO; /* bad smb */
} else {
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
@@ -4702,7 +4718,7 @@ SETFSUnixRetry:
pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION);
pSMB->ClientUnixCap = cpu_to_le64(cap);
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -4764,7 +4780,7 @@ QFSPosixRetry:
pSMB->Reserved3 = 0;
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO);
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -4774,7 +4790,7 @@ QFSPosixRetry:
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- if (rc || (pSMBr->ByteCount < 13)) {
+ if (rc || get_bcc(&pSMBr->hdr) < 13) {
rc = -EIO; /* bad smb */
} else {
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
@@ -4890,7 +4906,7 @@ SetEOFRetry:
pSMB->ParameterCount = cpu_to_le16(params);
pSMB->TotalParameterCount = pSMB->ParameterCount;
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
parm_data->FileSize = cpu_to_le64(size);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -4969,7 +4985,7 @@ CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size,
cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO);
}
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0);
if (rc) {
@@ -5037,7 +5053,7 @@ CIFSSMBSetFileInfo(const int xid, struct cifsTconInfo *tcon,
else
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
memcpy(data_offset, data, sizeof(FILE_BASIC_INFO));
rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0);
@@ -5096,7 +5112,7 @@ CIFSSMBSetFileDisposition(const int xid, struct cifsTconInfo *tcon,
pSMB->Fid = fid;
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO);
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
*data_offset = delete_file ? 1 : 0;
rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0);
@@ -5169,7 +5185,7 @@ SetTimesRetry:
else
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
memcpy(data_offset, data, sizeof(FILE_BASIC_INFO));
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -5221,7 +5237,7 @@ SetAttrLgcyRetry:
}
pSMB->attr = cpu_to_le16(dos_attrs);
pSMB->BufferFormat = 0x04;
- pSMB->hdr.smb_buf_length += name_len + 1;
+ inc_rfc1001_len(pSMB, name_len + 1);
pSMB->ByteCount = cpu_to_le16(name_len + 1);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
@@ -5326,7 +5342,7 @@ CIFSSMBUnixSetFileInfo(const int xid, struct cifsTconInfo *tcon,
pSMB->Fid = fid;
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC);
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
cifs_fill_unix_set_info(data_offset, args);
@@ -5402,7 +5418,7 @@ setPermsRetry:
pSMB->TotalDataCount = pSMB->DataCount;
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC);
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
cifs_fill_unix_set_info(data_offset, args);
@@ -5418,79 +5434,6 @@ setPermsRetry:
return rc;
}
-int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon,
- const int notify_subdirs, const __u16 netfid,
- __u32 filter, struct file *pfile, int multishot,
- const struct nls_table *nls_codepage)
-{
- int rc = 0;
- struct smb_com_transaction_change_notify_req *pSMB = NULL;
- struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL;
- struct dir_notify_req *dnotify_req;
- int bytes_returned;
-
- cFYI(1, "In CIFSSMBNotify for file handle %d", (int)netfid);
- rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- pSMB->TotalParameterCount = 0 ;
- pSMB->TotalDataCount = 0;
- pSMB->MaxParameterCount = cpu_to_le32(2);
- /* BB find exact data count max from sess structure BB */
- pSMB->MaxDataCount = 0; /* same in little endian or be */
-/* BB VERIFY verify which is correct for above BB */
- pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf -
- MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
-
- pSMB->MaxSetupCount = 4;
- pSMB->Reserved = 0;
- pSMB->ParameterOffset = 0;
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->SetupCount = 4; /* single byte does not need le conversion */
- pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE);
- pSMB->ParameterCount = pSMB->TotalParameterCount;
- if (notify_subdirs)
- pSMB->WatchTree = 1; /* one byte - no le conversion needed */
- pSMB->Reserved2 = 0;
- pSMB->CompletionFilter = cpu_to_le32(filter);
- pSMB->Fid = netfid; /* file handle always le */
- pSMB->ByteCount = 0;
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *)pSMBr, &bytes_returned,
- CIFS_ASYNC_OP);
- if (rc) {
- cFYI(1, "Error in Notify = %d", rc);
- } else {
- /* Add file to outstanding requests */
- /* BB change to kmem cache alloc */
- dnotify_req = kmalloc(
- sizeof(struct dir_notify_req),
- GFP_KERNEL);
- if (dnotify_req) {
- dnotify_req->Pid = pSMB->hdr.Pid;
- dnotify_req->PidHigh = pSMB->hdr.PidHigh;
- dnotify_req->Mid = pSMB->hdr.Mid;
- dnotify_req->Tid = pSMB->hdr.Tid;
- dnotify_req->Uid = pSMB->hdr.Uid;
- dnotify_req->netfid = netfid;
- dnotify_req->pfile = pfile;
- dnotify_req->filter = filter;
- dnotify_req->multishot = multishot;
- spin_lock(&GlobalMid_Lock);
- list_add_tail(&dnotify_req->lhead,
- &GlobalDnotifyReqList);
- spin_unlock(&GlobalMid_Lock);
- } else
- rc = -ENOMEM;
- }
- cifs_buf_release(pSMB);
- return rc;
-}
-
#ifdef CONFIG_CIFS_XATTR
/*
* Do a path-based QUERY_ALL_EAS call and parse the result. This is a common
@@ -5560,7 +5503,7 @@ QAllEAsRetry:
pSMB->ParameterCount = pSMB->TotalParameterCount;
pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS);
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
@@ -5576,7 +5519,7 @@ QAllEAsRetry:
of these trans2 responses */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- if (rc || (pSMBr->ByteCount < 4)) {
+ if (rc || get_bcc(&pSMBr->hdr) < 4) {
rc = -EIO; /* bad smb */
goto QAllEAsOut;
}
@@ -5773,7 +5716,7 @@ SetEARetry:
pSMB->ParameterCount = cpu_to_le16(params);
pSMB->TotalParameterCount = pSMB->ParameterCount;
pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
+ inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
@@ -5787,5 +5730,99 @@ SetEARetry:
return rc;
}
-
#endif
+
+#ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */
+/*
+ * Years ago the kernel added a "dnotify" function for Samba server,
+ * to allow network clients (such as Windows) to display updated
+ * lists of files in directory listings automatically when
+ * files are added by one user when another user has the
+ * same directory open on their desktop. The Linux cifs kernel
+ * client hooked into the kernel side of this interface for
+ * the same reason, but ironically when the VFS moved from
+ * "dnotify" to "inotify" it became harder to plug in Linux
+ * network file system clients (the most obvious use case
+ * for notify interfaces is when multiple users can update
+ * the contents of the same directory - exactly what network
+ * file systems can do) although the server (Samba) could
+ * still use it. For the short term we leave the worker
+ * function ifdeffed out (below) until inotify is fixed
+ * in the VFS to make it easier to plug in network file
+ * system clients. If inotify turns out to be permanently
+ * incompatible for network fs clients, we could instead simply
+ * expose this config flag by adding a future cifs (and smb2) notify ioctl.
+ */
+int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon,
+ const int notify_subdirs, const __u16 netfid,
+ __u32 filter, struct file *pfile, int multishot,
+ const struct nls_table *nls_codepage)
+{
+ int rc = 0;
+ struct smb_com_transaction_change_notify_req *pSMB = NULL;
+ struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL;
+ struct dir_notify_req *dnotify_req;
+ int bytes_returned;
+
+ cFYI(1, "In CIFSSMBNotify for file handle %d", (int)netfid);
+ rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ pSMB->TotalParameterCount = 0 ;
+ pSMB->TotalDataCount = 0;
+ pSMB->MaxParameterCount = cpu_to_le32(2);
+ /* BB find exact data count max from sess structure BB */
+ pSMB->MaxDataCount = 0; /* same in little endian or be */
+/* BB VERIFY verify which is correct for above BB */
+ pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf -
+ MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
+
+ pSMB->MaxSetupCount = 4;
+ pSMB->Reserved = 0;
+ pSMB->ParameterOffset = 0;
+ pSMB->DataCount = 0;
+ pSMB->DataOffset = 0;
+ pSMB->SetupCount = 4; /* single byte does not need le conversion */
+ pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE);
+ pSMB->ParameterCount = pSMB->TotalParameterCount;
+ if (notify_subdirs)
+ pSMB->WatchTree = 1; /* one byte - no le conversion needed */
+ pSMB->Reserved2 = 0;
+ pSMB->CompletionFilter = cpu_to_le32(filter);
+ pSMB->Fid = netfid; /* file handle always le */
+ pSMB->ByteCount = 0;
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *)pSMBr, &bytes_returned,
+ CIFS_ASYNC_OP);
+ if (rc) {
+ cFYI(1, "Error in Notify = %d", rc);
+ } else {
+ /* Add file to outstanding requests */
+ /* BB change to kmem cache alloc */
+ dnotify_req = kmalloc(
+ sizeof(struct dir_notify_req),
+ GFP_KERNEL);
+ if (dnotify_req) {
+ dnotify_req->Pid = pSMB->hdr.Pid;
+ dnotify_req->PidHigh = pSMB->hdr.PidHigh;
+ dnotify_req->Mid = pSMB->hdr.Mid;
+ dnotify_req->Tid = pSMB->hdr.Tid;
+ dnotify_req->Uid = pSMB->hdr.Uid;
+ dnotify_req->netfid = netfid;
+ dnotify_req->pfile = pfile;
+ dnotify_req->filter = filter;
+ dnotify_req->multishot = multishot;
+ spin_lock(&GlobalMid_Lock);
+ list_add_tail(&dnotify_req->lhead,
+ &GlobalDnotifyReqList);
+ spin_unlock(&GlobalMid_Lock);
+ } else
+ rc = -ENOMEM;
+ }
+ cifs_buf_release(pSMB);
+ return rc;
+}
+#endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 6e2b2addfc7..da284e3cb65 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -102,6 +102,7 @@ struct smb_vol {
bool fsc:1; /* enable fscache */
bool mfsymlinks:1; /* use Minshall+French Symlinks */
bool multiuser:1;
+ bool use_smb2:1; /* force smb2 use on mount instead of cifs */
unsigned int rsize;
unsigned int wsize;
bool sockopt_tcp_nodelay:1;
@@ -199,8 +200,7 @@ cifs_reconnect(struct TCP_Server_Info *server)
}
spin_unlock(&GlobalMid_Lock);
- while ((server->tcpStatus != CifsExiting) &&
- (server->tcpStatus != CifsGood)) {
+ while (server->tcpStatus == CifsNeedReconnect) {
try_to_freeze();
/* we should try only the port we connected to before */
@@ -212,7 +212,7 @@ cifs_reconnect(struct TCP_Server_Info *server)
atomic_inc(&tcpSesReconnectCount);
spin_lock(&GlobalMid_Lock);
if (server->tcpStatus != CifsExiting)
- server->tcpStatus = CifsGood;
+ server->tcpStatus = CifsNeedNegotiate;
spin_unlock(&GlobalMid_Lock);
}
}
@@ -248,24 +248,24 @@ static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize)
total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
data_in_this_rsp = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
- remaining = total_data_size - data_in_this_rsp;
-
- if (remaining == 0)
+ if (total_data_size == data_in_this_rsp)
return 0;
- else if (remaining < 0) {
+ else if (total_data_size < data_in_this_rsp) {
cFYI(1, "total data %d smaller than data in frame %d",
total_data_size, data_in_this_rsp);
return -EINVAL;
- } else {
- cFYI(1, "missing %d bytes from transact2, check next response",
- remaining);
- if (total_data_size > maxBufSize) {
- cERROR(1, "TotalDataSize %d is over maximum buffer %d",
- total_data_size, maxBufSize);
- return -EINVAL;
- }
- return remaining;
}
+
+ remaining = total_data_size - data_in_this_rsp;
+
+ cFYI(1, "missing %d bytes from transact2, check next response",
+ remaining);
+ if (total_data_size > maxBufSize) {
+ cERROR(1, "TotalDataSize %d is over maximum buffer %d",
+ total_data_size, maxBufSize);
+ return -EINVAL;
+ }
+ return remaining;
}
static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB)
@@ -275,7 +275,8 @@ static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB)
char *data_area_of_target;
char *data_area_of_buf2;
int remaining;
- __u16 byte_count, total_data_size, total_in_buf, total_in_buf2;
+ unsigned int byte_count, total_in_buf;
+ __u16 total_data_size, total_in_buf2;
total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
@@ -288,7 +289,7 @@ static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB)
remaining = total_data_size - total_in_buf;
if (remaining < 0)
- return -EINVAL;
+ return -EPROTO;
if (remaining == 0) /* nothing to do, ignore */
return 0;
@@ -309,19 +310,28 @@ static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB)
data_area_of_target += total_in_buf;
/* copy second buffer into end of first buffer */
- memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2);
total_in_buf += total_in_buf2;
+ /* is the result too big for the field? */
+ if (total_in_buf > USHRT_MAX)
+ return -EPROTO;
put_unaligned_le16(total_in_buf, &pSMBt->t2_rsp.DataCount);
- byte_count = get_bcc_le(pTargetSMB);
- byte_count += total_in_buf2;
- put_bcc_le(byte_count, pTargetSMB);
- byte_count = pTargetSMB->smb_buf_length;
+ /* fix up the BCC */
+ byte_count = get_bcc(pTargetSMB);
byte_count += total_in_buf2;
+ /* is the result too big for the field? */
+ if (byte_count > USHRT_MAX)
+ return -EPROTO;
+ put_bcc(byte_count, pTargetSMB);
- /* BB also add check that we are not beyond maximum buffer size */
+ byte_count = be32_to_cpu(pTargetSMB->smb_buf_length);
+ byte_count += total_in_buf2;
+ /* don't allow buffer to overflow */
+ if (byte_count > CIFSMaxBufSize)
+ return -ENOBUFS;
+ pTargetSMB->smb_buf_length = cpu_to_be32(byte_count);
- pTargetSMB->smb_buf_length = byte_count;
+ memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2);
if (remaining == total_in_buf2) {
cFYI(1, "found the last secondary response");
@@ -421,7 +431,7 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
pdu_length = 4; /* enough to get RFC1001 header */
incomplete_rcv:
- if (echo_retries > 0 &&
+ if (echo_retries > 0 && server->tcpStatus == CifsGood &&
time_after(jiffies, server->lstrp +
(echo_retries * SMB_ECHO_INTERVAL))) {
cERROR(1, "Server %s has not responded in %d seconds. "
@@ -486,8 +496,7 @@ incomplete_rcv:
/* Note that FC 1001 length is big endian on the wire,
but we convert it here so it is always manipulated
as host byte order */
- pdu_length = be32_to_cpu((__force __be32)smb_buffer->smb_buf_length);
- smb_buffer->smb_buf_length = pdu_length;
+ pdu_length = be32_to_cpu(smb_buffer->smb_buf_length);
cFYI(1, "rfc1002 length 0x%x", pdu_length+4);
@@ -608,59 +617,63 @@ incomplete_rcv:
list_for_each_safe(tmp, tmp2, &server->pending_mid_q) {
mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
- if ((mid_entry->mid == smb_buffer->Mid) &&
- (mid_entry->midState == MID_REQUEST_SUBMITTED) &&
- (mid_entry->command == smb_buffer->Command)) {
- if (length == 0 &&
- check2ndT2(smb_buffer, server->maxBuf) > 0) {
- /* We have a multipart transact2 resp */
- isMultiRsp = true;
- if (mid_entry->resp_buf) {
- /* merge response - fix up 1st*/
- if (coalesce_t2(smb_buffer,
- mid_entry->resp_buf)) {
- mid_entry->multiRsp =
- true;
- break;
- } else {
- /* all parts received */
- mid_entry->multiEnd =
- true;
- goto multi_t2_fnd;
- }
+ if (mid_entry->mid != smb_buffer->Mid ||
+ mid_entry->midState != MID_REQUEST_SUBMITTED ||
+ mid_entry->command != smb_buffer->Command) {
+ mid_entry = NULL;
+ continue;
+ }
+
+ if (length == 0 &&
+ check2ndT2(smb_buffer, server->maxBuf) > 0) {
+ /* We have a multipart transact2 resp */
+ isMultiRsp = true;
+ if (mid_entry->resp_buf) {
+ /* merge response - fix up 1st*/
+ length = coalesce_t2(smb_buffer,
+ mid_entry->resp_buf);
+ if (length > 0) {
+ length = 0;
+ mid_entry->multiRsp = true;
+ break;
} else {
- if (!isLargeBuf) {
- cERROR(1, "1st trans2 resp needs bigbuf");
- /* BB maybe we can fix this up, switch
- to already allocated large buffer? */
- } else {
- /* Have first buffer */
- mid_entry->resp_buf =
- smb_buffer;
- mid_entry->largeBuf =
- true;
- bigbuf = NULL;
- }
+ /* all parts received or
+ * packet is malformed
+ */
+ mid_entry->multiEnd = true;
+ goto multi_t2_fnd;
+ }
+ } else {
+ if (!isLargeBuf) {
+ /*
+ * FIXME: switch to already
+ * allocated largebuf?
+ */
+ cERROR(1, "1st trans2 resp "
+ "needs bigbuf");
+ } else {
+ /* Have first buffer */
+ mid_entry->resp_buf =
+ smb_buffer;
+ mid_entry->largeBuf = true;
+ bigbuf = NULL;
}
- break;
}
- mid_entry->resp_buf = smb_buffer;
- mid_entry->largeBuf = isLargeBuf;
+ break;
+ }
+ mid_entry->resp_buf = smb_buffer;
+ mid_entry->largeBuf = isLargeBuf;
multi_t2_fnd:
- if (length == 0)
- mid_entry->midState =
- MID_RESPONSE_RECEIVED;
- else
- mid_entry->midState =
- MID_RESPONSE_MALFORMED;
+ if (length == 0)
+ mid_entry->midState = MID_RESPONSE_RECEIVED;
+ else
+ mid_entry->midState = MID_RESPONSE_MALFORMED;
#ifdef CONFIG_CIFS_STATS2
- mid_entry->when_received = jiffies;
+ mid_entry->when_received = jiffies;
#endif
- list_del_init(&mid_entry->qhead);
- mid_entry->callback(mid_entry);
- break;
- }
- mid_entry = NULL;
+ list_del_init(&mid_entry->qhead);
+ mid_entry->callback(mid_entry);
+ break;
}
spin_unlock(&GlobalMid_Lock);
@@ -722,7 +735,7 @@ multi_t2_fnd:
sock_release(csocket);
server->ssocket = NULL;
}
- /* buffer usuallly freed in free_mid - need to free it here on exit */
+ /* buffer usually freed in free_mid - need to free it here on exit */
cifs_buf_release(bigbuf);
if (smallbuf) /* no sense logging a debug message if NULL */
cifs_small_buf_release(smallbuf);
@@ -805,11 +818,11 @@ extract_hostname(const char *unc)
}
static int
-cifs_parse_mount_options(char *options, const char *devname,
+cifs_parse_mount_options(const char *mountdata, const char *devname,
struct smb_vol *vol)
{
- char *value;
- char *data;
+ char *value, *data, *end;
+ char *mountdata_copy, *options;
unsigned int temp_len, i, j;
char separator[2];
short int override_uid = -1;
@@ -849,9 +862,15 @@ cifs_parse_mount_options(char *options, const char *devname,
vol->actimeo = CIFS_DEF_ACTIMEO;
- if (!options)
- return 1;
+ if (!mountdata)
+ goto cifs_parse_mount_err;
+
+ mountdata_copy = kstrndup(mountdata, PAGE_SIZE, GFP_KERNEL);
+ if (!mountdata_copy)
+ goto cifs_parse_mount_err;
+ options = mountdata_copy;
+ end = options + strlen(options);
if (strncmp(options, "sep=", 4) == 0) {
if (options[4] != 0) {
separator[0] = options[4];
@@ -876,16 +895,22 @@ cifs_parse_mount_options(char *options, const char *devname,
if (!value) {
printk(KERN_WARNING
"CIFS: invalid or missing username\n");
- return 1; /* needs_arg; */
+ goto cifs_parse_mount_err;
} else if (!*value) {
/* null user, ie anonymous, authentication */
vol->nullauth = 1;
}
- if (strnlen(value, 200) < 200) {
- vol->username = value;
+ if (strnlen(value, MAX_USERNAME_SIZE) <
+ MAX_USERNAME_SIZE) {
+ vol->username = kstrdup(value, GFP_KERNEL);
+ if (!vol->username) {
+ printk(KERN_WARNING "CIFS: no memory "
+ "for username\n");
+ goto cifs_parse_mount_err;
+ }
} else {
printk(KERN_WARNING "CIFS: username too long\n");
- return 1;
+ goto cifs_parse_mount_err;
}
} else if (strnicmp(data, "pass", 4) == 0) {
if (!value) {
@@ -916,6 +941,7 @@ cifs_parse_mount_options(char *options, const char *devname,
the only illegal character in a password is null */
if ((value[temp_len] == 0) &&
+ (value + temp_len < end) &&
(value[temp_len+1] == separator[0])) {
/* reinsert comma */
value[temp_len] = separator[0];
@@ -948,7 +974,7 @@ cifs_parse_mount_options(char *options, const char *devname,
if (vol->password == NULL) {
printk(KERN_WARNING "CIFS: no memory "
"for password\n");
- return 1;
+ goto cifs_parse_mount_err;
}
for (i = 0, j = 0; i < temp_len; i++, j++) {
vol->password[j] = value[i];
@@ -964,7 +990,7 @@ cifs_parse_mount_options(char *options, const char *devname,
if (vol->password == NULL) {
printk(KERN_WARNING "CIFS: no memory "
"for password\n");
- return 1;
+ goto cifs_parse_mount_err;
}
strcpy(vol->password, value);
}
@@ -974,11 +1000,16 @@ cifs_parse_mount_options(char *options, const char *devname,
vol->UNCip = NULL;
} else if (strnlen(value, INET6_ADDRSTRLEN) <
INET6_ADDRSTRLEN) {
- vol->UNCip = value;
+ vol->UNCip = kstrdup(value, GFP_KERNEL);
+ if (!vol->UNCip) {
+ printk(KERN_WARNING "CIFS: no memory "
+ "for UNC IP\n");
+ goto cifs_parse_mount_err;
+ }
} else {
printk(KERN_WARNING "CIFS: ip address "
"too long\n");
- return 1;
+ goto cifs_parse_mount_err;
}
} else if (strnicmp(data, "sec", 3) == 0) {
if (!value || !*value) {
@@ -991,7 +1022,7 @@ cifs_parse_mount_options(char *options, const char *devname,
/* vol->secFlg |= CIFSSEC_MUST_SEAL |
CIFSSEC_MAY_KRB5; */
cERROR(1, "Krb5 cifs privacy not supported");
- return 1;
+ goto cifs_parse_mount_err;
} else if (strnicmp(value, "krb5", 4) == 0) {
vol->secFlg |= CIFSSEC_MAY_KRB5;
} else if (strnicmp(value, "ntlmsspi", 8) == 0) {
@@ -1021,7 +1052,23 @@ cifs_parse_mount_options(char *options, const char *devname,
vol->nullauth = 1;
} else {
cERROR(1, "bad security option: %s", value);
- return 1;
+ goto cifs_parse_mount_err;
+ }
+ } else if (strnicmp(data, "vers", 3) == 0) {
+ if (!value || !*value) {
+ cERROR(1, "no protocol version specified"
+ " after vers= mount option");
+ } else if ((strnicmp(value, "cifs", 4) == 0) ||
+ (strnicmp(value, "1", 1) == 0)) {
+ /* this is the default */
+ continue;
+ } else if ((strnicmp(value, "smb2", 4) == 0) ||
+ (strnicmp(value, "2", 1) == 0)) {
+#ifdef CONFIG_CIFS_SMB2
+ vol->use_smb2 = true;
+#else
+ cERROR(1, "smb2 support not enabled");
+#endif /* CONFIG_CIFS_SMB2 */
}
} else if ((strnicmp(data, "unc", 3) == 0)
|| (strnicmp(data, "target", 6) == 0)
@@ -1029,12 +1076,12 @@ cifs_parse_mount_options(char *options, const char *devname,
if (!value || !*value) {
printk(KERN_WARNING "CIFS: invalid path to "
"network resource\n");
- return 1; /* needs_arg; */
+ goto cifs_parse_mount_err;
}
if ((temp_len = strnlen(value, 300)) < 300) {
vol->UNC = kmalloc(temp_len+1, GFP_KERNEL);
if (vol->UNC == NULL)
- return 1;
+ goto cifs_parse_mount_err;
strcpy(vol->UNC, value);
if (strncmp(vol->UNC, "//", 2) == 0) {
vol->UNC[0] = '\\';
@@ -1043,27 +1090,32 @@ cifs_parse_mount_options(char *options, const char *devname,
printk(KERN_WARNING
"CIFS: UNC Path does not begin "
"with // or \\\\ \n");
- return 1;
+ goto cifs_parse_mount_err;
}
} else {
printk(KERN_WARNING "CIFS: UNC name too long\n");
- return 1;
+ goto cifs_parse_mount_err;
}
} else if ((strnicmp(data, "domain", 3) == 0)
|| (strnicmp(data, "workgroup", 5) == 0)) {
if (!value || !*value) {
printk(KERN_WARNING "CIFS: invalid domain name\n");
- return 1; /* needs_arg; */
+ goto cifs_parse_mount_err;
}
/* BB are there cases in which a comma can be valid in
a domain name and need special handling? */
if (strnlen(value, 256) < 256) {
- vol->domainname = value;
+ vol->domainname = kstrdup(value, GFP_KERNEL);
+ if (!vol->domainname) {
+ printk(KERN_WARNING "CIFS: no memory "
+ "for domainname\n");
+ goto cifs_parse_mount_err;
+ }
cFYI(1, "Domain name set");
} else {
printk(KERN_WARNING "CIFS: domain name too "
"long\n");
- return 1;
+ goto cifs_parse_mount_err;
}
} else if (strnicmp(data, "srcaddr", 7) == 0) {
vol->srcaddr.ss_family = AF_UNSPEC;
@@ -1071,7 +1123,7 @@ cifs_parse_mount_options(char *options, const char *devname,
if (!value || !*value) {
printk(KERN_WARNING "CIFS: srcaddr value"
" not specified.\n");
- return 1; /* needs_arg; */
+ goto cifs_parse_mount_err;
}
i = cifs_convert_address((struct sockaddr *)&vol->srcaddr,
value, strlen(value));
@@ -1079,20 +1131,20 @@ cifs_parse_mount_options(char *options, const char *devname,
printk(KERN_WARNING "CIFS: Could not parse"
" srcaddr: %s\n",
value);
- return 1;
+ goto cifs_parse_mount_err;
}
} else if (strnicmp(data, "prefixpath", 10) == 0) {
if (!value || !*value) {
printk(KERN_WARNING
"CIFS: invalid path prefix\n");
- return 1; /* needs_argument */
+ goto cifs_parse_mount_err;
}
if ((temp_len = strnlen(value, 1024)) < 1024) {
if (value[0] != '/')
temp_len++; /* missing leading slash */
vol->prepath = kmalloc(temp_len+1, GFP_KERNEL);
if (vol->prepath == NULL)
- return 1;
+ goto cifs_parse_mount_err;
if (value[0] != '/') {
vol->prepath[0] = '/';
strcpy(vol->prepath+1, value);
@@ -1101,24 +1153,33 @@ cifs_parse_mount_options(char *options, const char *devname,
cFYI(1, "prefix path %s", vol->prepath);
} else {
printk(KERN_WARNING "CIFS: prefix too long\n");
- return 1;
+ goto cifs_parse_mount_err;
}
} else if (strnicmp(data, "iocharset", 9) == 0) {
if (!value || !*value) {
printk(KERN_WARNING "CIFS: invalid iocharset "
"specified\n");
- return 1; /* needs_arg; */
+ goto cifs_parse_mount_err;
}
if (strnlen(value, 65) < 65) {
- if (strnicmp(value, "default", 7))
- vol->iocharset = value;
+ if (strnicmp(value, "default", 7)) {
+ vol->iocharset = kstrdup(value,
+ GFP_KERNEL);
+
+ if (!vol->iocharset) {
+ printk(KERN_WARNING "CIFS: no "
+ "memory for"
+ "charset\n");
+ goto cifs_parse_mount_err;
+ }
+ }
/* if iocharset not set then load_nls_default
is used by caller */
cFYI(1, "iocharset set to %s", value);
} else {
printk(KERN_WARNING "CIFS: iocharset name "
"too long.\n");
- return 1;
+ goto cifs_parse_mount_err;
}
} else if (!strnicmp(data, "uid", 3) && value && *value) {
vol->linux_uid = simple_strtoul(value, &value, 0);
@@ -1231,7 +1292,7 @@ cifs_parse_mount_options(char *options, const char *devname,
if (vol->actimeo > CIFS_MAX_ACTIMEO) {
cERROR(1, "CIFS: attribute cache"
"timeout too large");
- return 1;
+ goto cifs_parse_mount_err;
}
}
} else if (strnicmp(data, "credentials", 4) == 0) {
@@ -1375,7 +1436,7 @@ cifs_parse_mount_options(char *options, const char *devname,
#ifndef CONFIG_CIFS_FSCACHE
cERROR(1, "FS-Cache support needs CONFIG_CIFS_FSCACHE"
"kernel config option set");
- return 1;
+ goto cifs_parse_mount_err;
#endif
vol->fsc = true;
} else if (strnicmp(data, "mfsymlinks", 10) == 0) {
@@ -1390,12 +1451,12 @@ cifs_parse_mount_options(char *options, const char *devname,
if (devname == NULL) {
printk(KERN_WARNING "CIFS: Missing UNC name for mount "
"target\n");
- return 1;
+ goto cifs_parse_mount_err;
}
if ((temp_len = strnlen(devname, 300)) < 300) {
vol->UNC = kmalloc(temp_len+1, GFP_KERNEL);
if (vol->UNC == NULL)
- return 1;
+ goto cifs_parse_mount_err;
strcpy(vol->UNC, devname);
if (strncmp(vol->UNC, "//", 2) == 0) {
vol->UNC[0] = '\\';
@@ -1403,21 +1464,21 @@ cifs_parse_mount_options(char *options, const char *devname,
} else if (strncmp(vol->UNC, "\\\\", 2) != 0) {
printk(KERN_WARNING "CIFS: UNC Path does not "
"begin with // or \\\\ \n");
- return 1;
+ goto cifs_parse_mount_err;
}
value = strpbrk(vol->UNC+2, "/\\");
if (value)
*value = '\\';
} else {
printk(KERN_WARNING "CIFS: UNC name too long\n");
- return 1;
+ goto cifs_parse_mount_err;
}
}
if (vol->multiuser && !(vol->secFlg & CIFSSEC_MAY_KRB5)) {
cERROR(1, "Multiuser mounts currently require krb5 "
"authentication!");
- return 1;
+ goto cifs_parse_mount_err;
}
if (vol->UNCip == NULL)
@@ -1435,7 +1496,12 @@ cifs_parse_mount_options(char *options, const char *devname,
printk(KERN_NOTICE "CIFS: ignoring forcegid mount option "
"specified with no gid= option.\n");
+ kfree(mountdata_copy);
return 0;
+
+cifs_parse_mount_err:
+ kfree(mountdata_copy);
+ return 1;
}
/** Returns true if srcaddr isn't specified and rhs isn't
@@ -1472,7 +1538,7 @@ srcip_matches(struct sockaddr *srcaddr, struct sockaddr *rhs)
static bool
match_port(struct TCP_Server_Info *server, struct sockaddr *addr)
{
- unsigned short int port, *sport;
+ __be16 port, *sport;
switch (addr->sa_family) {
case AF_INET:
@@ -1765,6 +1831,7 @@ cifs_get_tcp_session(struct smb_vol *volume_info)
module_put(THIS_MODULE);
goto out_err_crypto_release;
}
+ tcp_ses->tcpStatus = CifsNeedNegotiate;
/* thread spawned, put it on the list */
spin_lock(&cifs_tcp_ses_lock);
@@ -1808,7 +1875,9 @@ cifs_find_smb_ses(struct TCP_Server_Info *server, struct smb_vol *vol)
break;
default:
/* anything else takes username/password */
- if (strncmp(ses->userName, vol->username,
+ if (ses->user_name == NULL)
+ continue;
+ if (strncmp(ses->user_name, vol->username,
MAX_USERNAME_SIZE))
continue;
if (strlen(vol->username) != 0 &&
@@ -1851,6 +1920,8 @@ cifs_put_smb_ses(struct cifsSesInfo *ses)
cifs_put_tcp_session(server);
}
+static bool warned_on_ntlm; /* globals init to false automatically */
+
static struct cifsSesInfo *
cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
{
@@ -1906,9 +1977,11 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
else
sprintf(ses->serverName, "%pI4", &addr->sin_addr);
- if (volume_info->username)
- strncpy(ses->userName, volume_info->username,
- MAX_USERNAME_SIZE);
+ if (volume_info->username) {
+ ses->user_name = kstrdup(volume_info->username, GFP_KERNEL);
+ if (!ses->user_name)
+ goto get_ses_fail;
+ }
/* volume_info->password freed at unmount */
if (volume_info->password) {
@@ -1923,6 +1996,15 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
}
ses->cred_uid = volume_info->cred_uid;
ses->linux_uid = volume_info->linux_uid;
+
+ /* ntlmv2 is much stronger than ntlm security, and has been broadly
+ supported for many years, time to update default security mechanism */
+ if ((volume_info->secFlg == 0) && warned_on_ntlm == false) {
+ warned_on_ntlm = true;
+ cERROR(1, "default security mechanism requested. The default "
+ "security mechanism will be upgraded from ntlm to "
+ "ntlmv2 in kernel release 2.6.41");
+ }
ses->overrideSecFlg = volume_info->secFlg;
mutex_lock(&ses->session_mutex);
@@ -2249,7 +2331,7 @@ ip_rfc1001_connect(struct TCP_Server_Info *server)
smb_buf = (struct smb_hdr *)ses_init_buf;
/* sizeof RFC1002_SESSION_REQUEST with no scope */
- smb_buf->smb_buf_length = 0x81000044;
+ smb_buf->smb_buf_length = cpu_to_be32(0x81000044);
rc = smb_send(server, smb_buf, 0x44);
kfree(ses_init_buf);
/*
@@ -2276,7 +2358,7 @@ static int
generic_ip_connect(struct TCP_Server_Info *server)
{
int rc = 0;
- unsigned short int sport;
+ __be16 sport;
int slen, sfamily;
struct socket *socket = server->ssocket;
struct sockaddr *saddr;
@@ -2361,7 +2443,7 @@ generic_ip_connect(struct TCP_Server_Info *server)
static int
ip_connect(struct TCP_Server_Info *server)
{
- unsigned short int *sport;
+ __be16 *sport;
struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)&server->dstaddr;
struct sockaddr_in *addr = (struct sockaddr_in *)&server->dstaddr;
@@ -2642,6 +2724,11 @@ is_path_accessible(int xid, struct cifsTconInfo *tcon,
0 /* not legacy */, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
+
+ if (rc == -EOPNOTSUPP || rc == -EINVAL)
+ rc = SMBQueryInformation(xid, tcon, full_path, pfile_info,
+ cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
kfree(pfile_info);
return rc;
}
@@ -2655,8 +2742,12 @@ cleanup_volume_info(struct smb_vol **pvolume_info)
return;
volume_info = *pvolume_info;
+ kfree(volume_info->username);
kzfree(volume_info->password);
kfree(volume_info->UNC);
+ kfree(volume_info->UNCip);
+ kfree(volume_info->domainname);
+ kfree(volume_info->iocharset);
kfree(volume_info->prepath);
kfree(volume_info);
*pvolume_info = NULL;
@@ -2693,11 +2784,65 @@ build_unc_path_to_root(const struct smb_vol *volume_info,
full_path[unc_len + cifs_sb->prepathlen] = 0; /* add trailing null */
return full_path;
}
+
+/*
+ * Perform a dfs referral query for a share and (optionally) prefix
+ *
+ * If a referral is found, cifs_sb->mountdata will be (re-)allocated
+ * to a string containing updated options for the submount. Otherwise it
+ * will be left untouched.
+ *
+ * Returns the rc from get_dfs_path to the caller, which can be used to
+ * determine whether there were referrals.
+ */
+static int
+expand_dfs_referral(int xid, struct cifsSesInfo *pSesInfo,
+ struct smb_vol *volume_info, struct cifs_sb_info *cifs_sb,
+ int check_prefix)
+{
+ int rc;
+ unsigned int num_referrals = 0;
+ struct dfs_info3_param *referrals = NULL;
+ char *full_path = NULL, *ref_path = NULL, *mdata = NULL;
+
+ full_path = build_unc_path_to_root(volume_info, cifs_sb);
+ if (IS_ERR(full_path))
+ return PTR_ERR(full_path);
+
+ /* For DFS paths, skip the first '\' of the UNC */
+ ref_path = check_prefix ? full_path + 1 : volume_info->UNC + 1;
+
+ rc = get_dfs_path(xid, pSesInfo , ref_path, cifs_sb->local_nls,
+ &num_referrals, &referrals,
+ cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+
+ if (!rc && num_referrals > 0) {
+ char *fake_devname = NULL;
+
+ mdata = cifs_compose_mount_options(cifs_sb->mountdata,
+ full_path + 1, referrals,
+ &fake_devname);
+
+ free_dfs_info_array(referrals, num_referrals);
+ kfree(fake_devname);
+
+ if (cifs_sb->mountdata != NULL)
+ kfree(cifs_sb->mountdata);
+
+ if (IS_ERR(mdata)) {
+ rc = PTR_ERR(mdata);
+ mdata = NULL;
+ }
+ cifs_sb->mountdata = mdata;
+ }
+ kfree(full_path);
+ return rc;
+}
#endif
int
cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
- char *mount_data_global, const char *devname)
+ const char *devname)
{
int rc;
int xid;
@@ -2706,13 +2851,20 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
struct cifsTconInfo *tcon;
struct TCP_Server_Info *srvTcp;
char *full_path;
- char *mount_data = mount_data_global;
struct tcon_link *tlink;
#ifdef CONFIG_CIFS_DFS_UPCALL
- struct dfs_info3_param *referrals = NULL;
- unsigned int num_referrals = 0;
int referral_walks_count = 0;
try_mount_again:
+ /* cleanup activities if we're chasing a referral */
+ if (referral_walks_count) {
+ if (tcon)
+ cifs_put_tcon(tcon);
+ else if (pSesInfo)
+ cifs_put_smb_ses(pSesInfo);
+
+ cleanup_volume_info(&volume_info);
+ FreeXid(xid);
+ }
#endif
rc = 0;
tcon = NULL;
@@ -2729,7 +2881,8 @@ try_mount_again:
goto out;
}
- if (cifs_parse_mount_options(mount_data, devname, volume_info)) {
+ if (cifs_parse_mount_options(cifs_sb->mountdata, devname,
+ volume_info)) {
rc = -EINVAL;
goto out;
}
@@ -2825,8 +2978,26 @@ try_mount_again:
(tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE));
remote_path_check:
+#ifdef CONFIG_CIFS_DFS_UPCALL
+ /*
+ * Perform an unconditional check for whether there are DFS
+ * referrals for this path without prefix, to provide support
+ * for DFS referrals from w2k8 servers which don't seem to respond
+ * with PATH_NOT_COVERED to requests that include the prefix.
+ * Chase the referral if found, otherwise continue normally.
+ */
+ if (referral_walks_count == 0) {
+ int refrc = expand_dfs_referral(xid, pSesInfo, volume_info,
+ cifs_sb, false);
+ if (!refrc) {
+ referral_walks_count++;
+ goto try_mount_again;
+ }
+ }
+#endif
+
/* check if a whole path (including prepath) is not remote */
- if (!rc && cifs_sb->prepathlen && tcon) {
+ if (!rc && tcon) {
/* build_path_to_root works only when we have a valid tcon */
full_path = cifs_build_path_to_root(cifs_sb, tcon);
if (full_path == NULL) {
@@ -2858,46 +3029,15 @@ remote_path_check:
if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0)
convert_delimiter(cifs_sb->prepath,
CIFS_DIR_SEP(cifs_sb));
- full_path = build_unc_path_to_root(volume_info, cifs_sb);
- if (IS_ERR(full_path)) {
- rc = PTR_ERR(full_path);
- goto mount_fail_check;
- }
-
- cFYI(1, "Getting referral for: %s", full_path);
- rc = get_dfs_path(xid, pSesInfo , full_path + 1,
- cifs_sb->local_nls, &num_referrals, &referrals,
- cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (!rc && num_referrals > 0) {
- char *fake_devname = NULL;
- if (mount_data != mount_data_global)
- kfree(mount_data);
-
- mount_data = cifs_compose_mount_options(
- cifs_sb->mountdata, full_path + 1,
- referrals, &fake_devname);
-
- free_dfs_info_array(referrals, num_referrals);
- kfree(fake_devname);
- kfree(full_path);
+ rc = expand_dfs_referral(xid, pSesInfo, volume_info, cifs_sb,
+ true);
- if (IS_ERR(mount_data)) {
- rc = PTR_ERR(mount_data);
- mount_data = NULL;
- goto mount_fail_check;
- }
-
- if (tcon)
- cifs_put_tcon(tcon);
- else if (pSesInfo)
- cifs_put_smb_ses(pSesInfo);
-
- cleanup_volume_info(&volume_info);
+ if (!rc) {
referral_walks_count++;
- FreeXid(xid);
goto try_mount_again;
}
+ goto mount_fail_check;
#else /* No DFS support, return error on mount */
rc = -EOPNOTSUPP;
#endif
@@ -2930,8 +3070,6 @@ remote_path_check:
mount_fail_check:
/* on error free sesinfo and tcon struct if needed */
if (rc) {
- if (mount_data != mount_data_global)
- kfree(mount_data);
/* If find_unc succeeded then rc == 0 so we can not end */
/* up accidentally freeing someone elses tcon struct */
if (tcon)
@@ -3047,7 +3185,8 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr += strlen("?????");
bcc_ptr += 1;
count = bcc_ptr - &pSMB->Password[0];
- pSMB->hdr.smb_buf_length += count;
+ pSMB->hdr.smb_buf_length = cpu_to_be32(be32_to_cpu(
+ pSMB->hdr.smb_buf_length) + count);
pSMB->ByteCount = cpu_to_le16(count);
rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length,
@@ -3222,7 +3361,9 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, uid_t fsuid)
struct cifsSesInfo *ses;
struct cifsTconInfo *tcon = NULL;
struct smb_vol *vol_info;
- char username[MAX_USERNAME_SIZE + 1];
+ char username[28]; /* big enough for "krb50x" + hex of ULONG_MAX 6+16 */
+ /* We used to have this as MAX_USERNAME which is */
+ /* way too big now (256 instead of 32) */
vol_info = kzalloc(sizeof(*vol_info), GFP_KERNEL);
if (vol_info == NULL) {
diff --git a/fs/cifs/export.c b/fs/cifs/export.c
index 993f82045bf..55d87ac5200 100644
--- a/fs/cifs/export.c
+++ b/fs/cifs/export.c
@@ -45,7 +45,7 @@
#include "cifs_debug.h"
#include "cifsfs.h"
-#ifdef CONFIG_CIFS_EXPERIMENTAL
+#ifdef CIFS_NFSD_EXPORT
static struct dentry *cifs_get_parent(struct dentry *dentry)
{
/* BB need to add code here eventually to enable export via NFSD */
@@ -63,5 +63,5 @@ const struct export_operations cifs_export_ops = {
.encode_fs = */
};
-#endif /* EXPERIMENTAL */
+#endif /* CIFS_NFSD_EXPORT */
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index c27d236738f..c672afef0c0 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -575,8 +575,10 @@ reopen_error_exit:
int cifs_close(struct inode *inode, struct file *file)
{
- cifsFileInfo_put(file->private_data);
- file->private_data = NULL;
+ if (file->private_data != NULL) {
+ cifsFileInfo_put(file->private_data);
+ file->private_data = NULL;
+ }
/* return code from the ->release op is always ignored */
return 0;
@@ -855,95 +857,6 @@ cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
cifsi->server_eof = end_of_write;
}
-ssize_t cifs_user_write(struct file *file, const char __user *write_data,
- size_t write_size, loff_t *poffset)
-{
- struct inode *inode = file->f_path.dentry->d_inode;
- int rc = 0;
- unsigned int bytes_written = 0;
- unsigned int total_written;
- struct cifs_sb_info *cifs_sb;
- struct cifsTconInfo *pTcon;
- int xid;
- struct cifsFileInfo *open_file;
- struct cifsInodeInfo *cifsi = CIFS_I(inode);
-
- cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
-
- /* cFYI(1, " write %d bytes to offset %lld of %s", write_size,
- *poffset, file->f_path.dentry->d_name.name); */
-
- if (file->private_data == NULL)
- return -EBADF;
-
- open_file = file->private_data;
- pTcon = tlink_tcon(open_file->tlink);
-
- rc = generic_write_checks(file, poffset, &write_size, 0);
- if (rc)
- return rc;
-
- xid = GetXid();
-
- for (total_written = 0; write_size > total_written;
- total_written += bytes_written) {
- rc = -EAGAIN;
- while (rc == -EAGAIN) {
- if (file->private_data == NULL) {
- /* file has been closed on us */
- FreeXid(xid);
- /* if we have gotten here we have written some data
- and blocked, and the file has been freed on us while
- we blocked so return what we managed to write */
- return total_written;
- }
- if (open_file->invalidHandle) {
- /* we could deadlock if we called
- filemap_fdatawait from here so tell
- reopen_file not to flush data to server
- now */
- rc = cifs_reopen_file(open_file, false);
- if (rc != 0)
- break;
- }
-
- rc = CIFSSMBWrite(xid, pTcon,
- open_file->netfid,
- min_t(const int, cifs_sb->wsize,
- write_size - total_written),
- *poffset, &bytes_written,
- NULL, write_data + total_written, 0);
- }
- if (rc || (bytes_written == 0)) {
- if (total_written)
- break;
- else {
- FreeXid(xid);
- return rc;
- }
- } else {
- cifs_update_eof(cifsi, *poffset, bytes_written);
- *poffset += bytes_written;
- }
- }
-
- cifs_stats_bytes_written(pTcon, total_written);
-
-/* Do not update local mtime - server will set its actual value on write
- * inode->i_ctime = inode->i_mtime =
- * current_fs_time(inode->i_sb);*/
- if (total_written > 0) {
- spin_lock(&inode->i_lock);
- if (*poffset > inode->i_size)
- i_size_write(inode, *poffset);
- spin_unlock(&inode->i_lock);
- }
- mark_inode_dirty_sync(inode);
-
- FreeXid(xid);
- return total_written;
-}
-
static ssize_t cifs_write(struct cifsFileInfo *open_file,
const char *write_data, size_t write_size,
loff_t *poffset)
@@ -970,6 +883,9 @@ static ssize_t cifs_write(struct cifsFileInfo *open_file,
total_written += bytes_written) {
rc = -EAGAIN;
while (rc == -EAGAIN) {
+ struct kvec iov[2];
+ unsigned int len;
+
if (open_file->invalidHandle) {
/* we could deadlock if we called
filemap_fdatawait from here so tell
@@ -979,31 +895,14 @@ static ssize_t cifs_write(struct cifsFileInfo *open_file,
if (rc != 0)
break;
}
- if (experimEnabled || (pTcon->ses->server &&
- ((pTcon->ses->server->secMode &
- (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
- == 0))) {
- struct kvec iov[2];
- unsigned int len;
-
- len = min((size_t)cifs_sb->wsize,
- write_size - total_written);
- /* iov[0] is reserved for smb header */
- iov[1].iov_base = (char *)write_data +
- total_written;
- iov[1].iov_len = len;
- rc = CIFSSMBWrite2(xid, pTcon,
- open_file->netfid, len,
- *poffset, &bytes_written,
- iov, 1, 0);
- } else
- rc = CIFSSMBWrite(xid, pTcon,
- open_file->netfid,
- min_t(const int, cifs_sb->wsize,
- write_size - total_written),
- *poffset, &bytes_written,
- write_data + total_written,
- NULL, 0);
+
+ len = min((size_t)cifs_sb->wsize,
+ write_size - total_written);
+ /* iov[0] is reserved for smb header */
+ iov[1].iov_base = (char *)write_data + total_written;
+ iov[1].iov_len = len;
+ rc = CIFSSMBWrite2(xid, pTcon, open_file->netfid, len,
+ *poffset, &bytes_written, iov, 1, 0);
}
if (rc || (bytes_written == 0)) {
if (total_written)
@@ -1240,12 +1139,6 @@ static int cifs_writepages(struct address_space *mapping,
}
tcon = tlink_tcon(open_file->tlink);
- if (!experimEnabled && tcon->ses->server->secMode &
- (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) {
- cifsFileInfo_put(open_file);
- kfree(iov);
- return generic_writepages(mapping, wbc);
- }
cifsFileInfo_put(open_file);
xid = GetXid();
@@ -1438,9 +1331,10 @@ retry_write:
return rc;
}
-static int cifs_writepage(struct page *page, struct writeback_control *wbc)
+static int
+cifs_writepage_locked(struct page *page, struct writeback_control *wbc)
{
- int rc = -EFAULT;
+ int rc;
int xid;
xid = GetXid();
@@ -1460,15 +1354,29 @@ static int cifs_writepage(struct page *page, struct writeback_control *wbc)
* to fail to update with the state of the page correctly.
*/
set_page_writeback(page);
+retry_write:
rc = cifs_partialpagewrite(page, 0, PAGE_CACHE_SIZE);
- SetPageUptodate(page); /* BB add check for error and Clearuptodate? */
- unlock_page(page);
+ if (rc == -EAGAIN && wbc->sync_mode == WB_SYNC_ALL)
+ goto retry_write;
+ else if (rc == -EAGAIN)
+ redirty_page_for_writepage(wbc, page);
+ else if (rc != 0)
+ SetPageError(page);
+ else
+ SetPageUptodate(page);
end_page_writeback(page);
page_cache_release(page);
FreeXid(xid);
return rc;
}
+static int cifs_writepage(struct page *page, struct writeback_control *wbc)
+{
+ int rc = cifs_writepage_locked(page, wbc);
+ unlock_page(page);
+ return rc;
+}
+
static int cifs_write_end(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned copied,
struct page *page, void *fsdata)
@@ -1537,8 +1445,13 @@ int cifs_strict_fsync(struct file *file, int datasync)
cFYI(1, "Sync file - name: %s datasync: 0x%x",
file->f_path.dentry->d_name.name, datasync);
- if (!CIFS_I(inode)->clientCanCacheRead)
- cifs_invalidate_mapping(inode);
+ if (!CIFS_I(inode)->clientCanCacheRead) {
+ rc = cifs_invalidate_mapping(inode);
+ if (rc) {
+ cFYI(1, "rc: %d during invalidate phase", rc);
+ rc = 0; /* don't care about it in fsync */
+ }
+ }
tcon = tlink_tcon(smbfile->tlink);
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC))
@@ -1744,7 +1657,7 @@ cifs_iovec_write(struct file *file, const struct iovec *iov,
return total_written;
}
-static ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov,
+ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
{
ssize_t written;
@@ -1867,17 +1780,7 @@ cifs_iovec_read(struct file *file, const struct iovec *iov,
return total_read;
}
-ssize_t cifs_user_read(struct file *file, char __user *read_data,
- size_t read_size, loff_t *poffset)
-{
- struct iovec iov;
- iov.iov_base = read_data;
- iov.iov_len = read_size;
-
- return cifs_iovec_read(file, &iov, 1, poffset);
-}
-
-static ssize_t cifs_user_readv(struct kiocb *iocb, const struct iovec *iov,
+ssize_t cifs_user_readv(struct kiocb *iocb, const struct iovec *iov,
unsigned long nr_segs, loff_t pos)
{
ssize_t read;
@@ -1980,6 +1883,24 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size,
return total_read;
}
+/*
+ * If the page is mmap'ed into a process' page tables, then we need to make
+ * sure that it doesn't change while being written back.
+ */
+static int
+cifs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
+{
+ struct page *page = vmf->page;
+
+ lock_page(page);
+ return VM_FAULT_LOCKED;
+}
+
+static struct vm_operations_struct cifs_file_vm_ops = {
+ .fault = filemap_fault,
+ .page_mkwrite = cifs_page_mkwrite,
+};
+
int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma)
{
int rc, xid;
@@ -1987,10 +1908,15 @@ int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma)
xid = GetXid();
- if (!CIFS_I(inode)->clientCanCacheRead)
- cifs_invalidate_mapping(inode);
+ if (!CIFS_I(inode)->clientCanCacheRead) {
+ rc = cifs_invalidate_mapping(inode);
+ if (rc)
+ return rc;
+ }
rc = generic_file_mmap(file, vma);
+ if (rc == 0)
+ vma->vm_ops = &cifs_file_vm_ops;
FreeXid(xid);
return rc;
}
@@ -2007,6 +1933,8 @@ int cifs_file_mmap(struct file *file, struct vm_area_struct *vma)
return rc;
}
rc = generic_file_mmap(file, vma);
+ if (rc == 0)
+ vma->vm_ops = &cifs_file_vm_ops;
FreeXid(xid);
return rc;
}
@@ -2411,6 +2339,27 @@ static void cifs_invalidate_page(struct page *page, unsigned long offset)
cifs_fscache_invalidate_page(page, &cifsi->vfs_inode);
}
+static int cifs_launder_page(struct page *page)
+{
+ int rc = 0;
+ loff_t range_start = page_offset(page);
+ loff_t range_end = range_start + (loff_t)(PAGE_CACHE_SIZE - 1);
+ struct writeback_control wbc = {
+ .sync_mode = WB_SYNC_ALL,
+ .nr_to_write = 0,
+ .range_start = range_start,
+ .range_end = range_end,
+ };
+
+ cFYI(1, "Launder page: %p", page);
+
+ if (clear_page_dirty_for_io(page))
+ rc = cifs_writepage_locked(page, &wbc);
+
+ cifs_fscache_invalidate_page(page, page->mapping->host);
+ return rc;
+}
+
void cifs_oplock_break(struct work_struct *work)
{
struct cifsFileInfo *cfile = container_of(work, struct cifsFileInfo,
@@ -2482,7 +2431,7 @@ const struct address_space_operations cifs_addr_ops = {
.set_page_dirty = __set_page_dirty_nobuffers,
.releasepage = cifs_release_page,
.invalidatepage = cifs_invalidate_page,
- /* .direct_IO = */
+ .launder_page = cifs_launder_page,
};
/*
@@ -2499,5 +2448,5 @@ const struct address_space_operations cifs_addr_ops_smallbuf = {
.set_page_dirty = __set_page_dirty_nobuffers,
.releasepage = cifs_release_page,
.invalidatepage = cifs_invalidate_page,
- /* .direct_IO = */
+ .launder_page = cifs_launder_page,
};
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 8852470b4fb..de02ed5e25c 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -878,7 +878,7 @@ retry_iget5_locked:
}
/* gets root inode */
-struct inode *cifs_root_iget(struct super_block *sb, unsigned long ino)
+struct inode *cifs_root_iget(struct super_block *sb)
{
int xid;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
@@ -1683,71 +1683,70 @@ cifs_inode_needs_reval(struct inode *inode)
/*
* Zap the cache. Called when invalid_mapping flag is set.
*/
-void
+int
cifs_invalidate_mapping(struct inode *inode)
{
- int rc;
+ int rc = 0;
struct cifsInodeInfo *cifs_i = CIFS_I(inode);
cifs_i->invalid_mapping = false;
- /* write back any cached data */
if (inode->i_mapping && inode->i_mapping->nrpages != 0) {
- rc = filemap_write_and_wait(inode->i_mapping);
- mapping_set_error(inode->i_mapping, rc);
+ rc = invalidate_inode_pages2(inode->i_mapping);
+ if (rc) {
+ cERROR(1, "%s: could not invalidate inode %p", __func__,
+ inode);
+ cifs_i->invalid_mapping = true;
+ }
}
- invalidate_remote_inode(inode);
+
cifs_fscache_reset_inode_cookie(inode);
+ return rc;
}
-int cifs_revalidate_file(struct file *filp)
+int cifs_revalidate_file_attr(struct file *filp)
{
int rc = 0;
struct inode *inode = filp->f_path.dentry->d_inode;
struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data;
if (!cifs_inode_needs_reval(inode))
- goto check_inval;
+ return rc;
if (tlink_tcon(cfile->tlink)->unix_ext)
rc = cifs_get_file_info_unix(filp);
else
rc = cifs_get_file_info(filp);
-check_inval:
- if (CIFS_I(inode)->invalid_mapping)
- cifs_invalidate_mapping(inode);
-
return rc;
}
-/* revalidate a dentry's inode attributes */
-int cifs_revalidate_dentry(struct dentry *dentry)
+int cifs_revalidate_dentry_attr(struct dentry *dentry)
{
int xid;
int rc = 0;
- char *full_path = NULL;
struct inode *inode = dentry->d_inode;
struct super_block *sb = dentry->d_sb;
+ char *full_path = NULL;
if (inode == NULL)
return -ENOENT;
- xid = GetXid();
-
if (!cifs_inode_needs_reval(inode))
- goto check_inval;
+ return rc;
+
+ xid = GetXid();
/* can not safely grab the rename sem here if rename calls revalidate
since that would deadlock */
full_path = build_path_from_dentry(dentry);
if (full_path == NULL) {
rc = -ENOMEM;
- goto check_inval;
+ goto out;
}
- cFYI(1, "Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld "
- "jiffies %ld", full_path, inode, inode->i_count.counter,
+ cFYI(1, "Update attributes: %s inode 0x%p count %d dentry: 0x%p d_time "
+ "%ld jiffies %ld", full_path, inode, inode->i_count.counter,
dentry, dentry->d_time, jiffies);
if (cifs_sb_master_tcon(CIFS_SB(sb))->unix_ext)
@@ -1756,41 +1755,83 @@ int cifs_revalidate_dentry(struct dentry *dentry)
rc = cifs_get_inode_info(&inode, full_path, NULL, sb,
xid, NULL);
-check_inval:
- if (CIFS_I(inode)->invalid_mapping)
- cifs_invalidate_mapping(inode);
-
+out:
kfree(full_path);
FreeXid(xid);
return rc;
}
+int cifs_revalidate_file(struct file *filp)
+{
+ int rc;
+ struct inode *inode = filp->f_path.dentry->d_inode;
+
+ rc = cifs_revalidate_file_attr(filp);
+ if (rc)
+ return rc;
+
+ if (CIFS_I(inode)->invalid_mapping)
+ rc = cifs_invalidate_mapping(inode);
+ return rc;
+}
+
+/* revalidate a dentry's inode attributes */
+int cifs_revalidate_dentry(struct dentry *dentry)
+{
+ int rc;
+ struct inode *inode = dentry->d_inode;
+
+ rc = cifs_revalidate_dentry_attr(dentry);
+ if (rc)
+ return rc;
+
+ if (CIFS_I(inode)->invalid_mapping)
+ rc = cifs_invalidate_mapping(inode);
+ return rc;
+}
+
int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
struct kstat *stat)
{
struct cifs_sb_info *cifs_sb = CIFS_SB(dentry->d_sb);
struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
- int err = cifs_revalidate_dentry(dentry);
-
- if (!err) {
- generic_fillattr(dentry->d_inode, stat);
- stat->blksize = CIFS_MAX_MSGSIZE;
- stat->ino = CIFS_I(dentry->d_inode)->uniqueid;
+ struct inode *inode = dentry->d_inode;
+ int rc;
- /*
- * If on a multiuser mount without unix extensions, and the
- * admin hasn't overridden them, set the ownership to the
- * fsuid/fsgid of the current process.
- */
- if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) &&
- !tcon->unix_ext) {
- if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID))
- stat->uid = current_fsuid();
- if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID))
- stat->gid = current_fsgid();
+ /*
+ * We need to be sure that all dirty pages are written and the server
+ * has actual ctime, mtime and file length.
+ */
+ if (!CIFS_I(inode)->clientCanCacheRead && inode->i_mapping &&
+ inode->i_mapping->nrpages != 0) {
+ rc = filemap_fdatawait(inode->i_mapping);
+ if (rc) {
+ mapping_set_error(inode->i_mapping, rc);
+ return rc;
}
}
- return err;
+
+ rc = cifs_revalidate_dentry_attr(dentry);
+ if (rc)
+ return rc;
+
+ generic_fillattr(inode, stat);
+ stat->blksize = CIFS_MAX_MSGSIZE;
+ stat->ino = CIFS_I(inode)->uniqueid;
+
+ /*
+ * If on a multiuser mount without unix extensions, and the admin hasn't
+ * overridden them, set the ownership to the fsuid/fsgid of the current
+ * process.
+ */
+ if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) &&
+ !tcon->unix_ext) {
+ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID))
+ stat->uid = current_fsuid();
+ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID))
+ stat->gid = current_fsgid();
+ }
+ return rc;
}
static int cifs_truncate_page(struct address_space *mapping, loff_t from)
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index e8804d37340..ce417a9764a 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -239,7 +239,7 @@ CIFSQueryMFSymLink(const int xid, struct cifsTconInfo *tcon,
if (rc != 0)
return rc;
- if (file_info.EndOfFile != CIFS_MF_SYMLINK_FILE_SIZE) {
+ if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) {
CIFSSMBClose(xid, tcon, netfid);
/* it's not a symlink */
return -EINVAL;
@@ -316,7 +316,7 @@ CIFSCheckMFSymlink(struct cifs_fattr *fattr,
if (rc != 0)
goto out;
- if (file_info.EndOfFile != CIFS_MF_SYMLINK_FILE_SIZE) {
+ if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) {
CIFSSMBClose(xid, pTcon, netfid);
/* it's not a symlink */
goto out;
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 2a930a752a7..907531ac588 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -100,6 +100,7 @@ sesInfoFree(struct cifsSesInfo *buf_to_free)
memset(buf_to_free->password, 0, strlen(buf_to_free->password));
kfree(buf_to_free->password);
}
+ kfree(buf_to_free->user_name);
kfree(buf_to_free->domainName);
kfree(buf_to_free);
}
@@ -303,12 +304,10 @@ header_assemble(struct smb_hdr *buffer, char smb_command /* command */ ,
memset(temp, 0, 256); /* bigger than MAX_CIFS_HDR_SIZE */
- buffer->smb_buf_length =
+ buffer->smb_buf_length = cpu_to_be32(
(2 * word_count) + sizeof(struct smb_hdr) -
4 /* RFC 1001 length field does not count */ +
- 2 /* for bcc field itself */ ;
- /* Note that this is the only network field that has to be converted
- to big endian and it is done just before we send it */
+ 2 /* for bcc field itself */) ;
buffer->Protocol[0] = 0xFF;
buffer->Protocol[1] = 'S';
@@ -423,7 +422,7 @@ check_smb_hdr(struct smb_hdr *smb, __u16 mid)
int
checkSMB(struct smb_hdr *smb, __u16 mid, unsigned int length)
{
- __u32 len = smb->smb_buf_length;
+ __u32 len = be32_to_cpu(smb->smb_buf_length);
__u32 clc_len; /* calculated length */
cFYI(0, "checkSMB Length: 0x%x, smb_buf_length: 0x%x", length, len);
@@ -463,7 +462,7 @@ checkSMB(struct smb_hdr *smb, __u16 mid, unsigned int length)
if (check_smb_hdr(smb, mid))
return 1;
- clc_len = smbCalcSize_LE(smb);
+ clc_len = smbCalcSize(smb);
if (4 + len != length) {
cERROR(1, "Length read does not match RFC1001 length %d",
@@ -520,7 +519,7 @@ is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv)
(struct smb_com_transaction_change_notify_rsp *)buf;
struct file_notify_information *pnotify;
__u32 data_offset = 0;
- if (pSMBr->ByteCount > sizeof(struct file_notify_information)) {
+ if (get_bcc(buf) > sizeof(struct file_notify_information)) {
data_offset = le32_to_cpu(pSMBr->DataOffset);
pnotify = (struct file_notify_information *)
diff --git a/fs/cifs/netmisc.c b/fs/cifs/netmisc.c
index 79f641eeda3..79b71c2c7c9 100644
--- a/fs/cifs/netmisc.c
+++ b/fs/cifs/netmisc.c
@@ -919,13 +919,6 @@ smbCalcSize(struct smb_hdr *ptr)
2 /* size of the bcc field */ + get_bcc(ptr));
}
-unsigned int
-smbCalcSize_LE(struct smb_hdr *ptr)
-{
- return (sizeof(struct smb_hdr) + (2 * ptr->WordCount) +
- 2 /* size of the bcc field */ + get_bcc_le(ptr));
-}
-
/* The following are taken from fs/ntfs/util.c */
#define NTFS_TIME_OFFSET ((u64)(369*365 + 89) * 24 * 3600 * 10000000)
diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
index 16765703131..7dd46210037 100644
--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -219,12 +219,12 @@ static void unicode_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses,
bcc_ptr++;
} */
/* copy user */
- if (ses->userName == NULL) {
+ if (ses->user_name == NULL) {
/* null user mount */
*bcc_ptr = 0;
*(bcc_ptr+1) = 0;
} else {
- bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->userName,
+ bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->user_name,
MAX_USERNAME_SIZE, nls_cp);
}
bcc_ptr += 2 * bytes_ret;
@@ -244,12 +244,11 @@ static void ascii_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses,
/* copy user */
/* BB what about null user mounts - check that we do this BB */
/* copy user */
- if (ses->userName == NULL) {
- /* BB what about null user mounts - check that we do this BB */
- } else {
- strncpy(bcc_ptr, ses->userName, MAX_USERNAME_SIZE);
- }
- bcc_ptr += strnlen(ses->userName, MAX_USERNAME_SIZE);
+ if (ses->user_name != NULL)
+ strncpy(bcc_ptr, ses->user_name, MAX_USERNAME_SIZE);
+ /* else null user mount */
+
+ bcc_ptr += strnlen(ses->user_name, MAX_USERNAME_SIZE);
*bcc_ptr = 0;
bcc_ptr++; /* account for null termination */
@@ -277,7 +276,7 @@ static void ascii_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses,
}
static void
-decode_unicode_ssetup(char **pbcc_area, __u16 bleft, struct cifsSesInfo *ses,
+decode_unicode_ssetup(char **pbcc_area, int bleft, struct cifsSesInfo *ses,
const struct nls_table *nls_cp)
{
int len;
@@ -285,19 +284,6 @@ decode_unicode_ssetup(char **pbcc_area, __u16 bleft, struct cifsSesInfo *ses,
cFYI(1, "bleft %d", bleft);
- /*
- * Windows servers do not always double null terminate their final
- * Unicode string. Check to see if there are an uneven number of bytes
- * left. If so, then add an extra NULL pad byte to the end of the
- * response.
- *
- * See section 2.7.2 in "Implementing CIFS" for details
- */
- if (bleft % 2) {
- data[bleft] = 0;
- ++bleft;
- }
-
kfree(ses->serverOS);
ses->serverOS = cifs_strndup_from_ucs(data, bleft, true, nls_cp);
cFYI(1, "serverOS=%s", ses->serverOS);
@@ -405,8 +391,8 @@ static int decode_ntlmssp_challenge(char *bcc_ptr, int blob_len,
/* BB spec says that if AvId field of MsvAvTimestamp is populated then
we must set the MIC field of the AUTHENTICATE_MESSAGE */
ses->ntlmssp->server_flags = le32_to_cpu(pblob->NegotiateFlags);
- tioffset = cpu_to_le16(pblob->TargetInfoArray.BufferOffset);
- tilen = cpu_to_le16(pblob->TargetInfoArray.Length);
+ tioffset = le32_to_cpu(pblob->TargetInfoArray.BufferOffset);
+ tilen = le16_to_cpu(pblob->TargetInfoArray.Length);
if (tilen) {
ses->auth_key.response = kmalloc(tilen, GFP_KERNEL);
if (!ses->auth_key.response) {
@@ -523,14 +509,14 @@ static int build_ntlmssp_auth_blob(unsigned char *pbuffer,
tmp += len;
}
- if (ses->userName == NULL) {
+ if (ses->user_name == NULL) {
sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - pbuffer);
sec_blob->UserName.Length = 0;
sec_blob->UserName.MaximumLength = 0;
tmp += 2;
} else {
int len;
- len = cifs_strtoUCS((__le16 *)tmp, ses->userName,
+ len = cifs_strtoUCS((__le16 *)tmp, ses->user_name,
MAX_USERNAME_SIZE, nls_cp);
len *= 2; /* unicode is 2 bytes each */
sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - pbuffer);
@@ -635,7 +621,7 @@ ssetup_ntlmssp_authenticate:
and rest of bcc area. This allows us to avoid
a large buffer 17K allocation */
iov[0].iov_base = (char *)pSMB;
- iov[0].iov_len = smb_buf->smb_buf_length + 4;
+ iov[0].iov_len = be32_to_cpu(smb_buf->smb_buf_length) + 4;
/* setting this here allows the code at the end of the function
to free the request buffer if there's an error */
@@ -670,7 +656,7 @@ ssetup_ntlmssp_authenticate:
* to use challenge/response method (i.e. Password bit is 1).
*/
- calc_lanman_hash(ses->password, ses->server->cryptkey,
+ rc = calc_lanman_hash(ses->password, ses->server->cryptkey,
ses->server->secMode & SECMODE_PW_ENCRYPT ?
true : false, lnm_session_key);
@@ -873,9 +859,10 @@ ssetup_ntlmssp_authenticate:
iov[2].iov_len = (long) bcc_ptr - (long) str_area;
count = iov[1].iov_len + iov[2].iov_len;
- smb_buf->smb_buf_length += count;
+ smb_buf->smb_buf_length =
+ cpu_to_be32(be32_to_cpu(smb_buf->smb_buf_length) + count);
- put_bcc_le(count, smb_buf);
+ put_bcc(count, smb_buf);
rc = SendReceive2(xid, ses, iov, 3 /* num_iovecs */, &resp_buf_type,
CIFS_LOG_ERROR);
@@ -930,7 +917,9 @@ ssetup_ntlmssp_authenticate:
}
/* BB check if Unicode and decode strings */
- if (smb_buf->Flags2 & SMBFLG2_UNICODE) {
+ if (bytes_remaining == 0) {
+ /* no string area to decode, do nothing */
+ } else if (smb_buf->Flags2 & SMBFLG2_UNICODE) {
/* unicode string area must be word-aligned */
if (((unsigned long) bcc_ptr - (unsigned long) smb_buf) % 2) {
++bcc_ptr;
diff --git a/fs/cifs/smbdes.c b/fs/cifs/smbdes.c
deleted file mode 100644
index 04721485925..00000000000
--- a/fs/cifs/smbdes.c
+++ /dev/null
@@ -1,418 +0,0 @@
-/*
- Unix SMB/Netbios implementation.
- Version 1.9.
-
- a partial implementation of DES designed for use in the
- SMB authentication protocol
-
- Copyright (C) Andrew Tridgell 1998
- Modified by Steve French (sfrench@us.ibm.com) 2002,2004
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-/* NOTES:
-
- This code makes no attempt to be fast! In fact, it is a very
- slow implementation
-
- This code is NOT a complete DES implementation. It implements only
- the minimum necessary for SMB authentication, as used by all SMB
- products (including every copy of Microsoft Windows95 ever sold)
-
- In particular, it can only do a unchained forward DES pass. This
- means it is not possible to use this code for encryption/decryption
- of data, instead it is only useful as a "hash" algorithm.
-
- There is no entry point into this code that allows normal DES operation.
-
- I believe this means that this code does not come under ITAR
- regulations but this is NOT a legal opinion. If you are concerned
- about the applicability of ITAR regulations to this code then you
- should confirm it for yourself (and maybe let me know if you come
- up with a different answer to the one above)
-*/
-#include <linux/slab.h>
-#define uchar unsigned char
-
-static uchar perm1[56] = { 57, 49, 41, 33, 25, 17, 9,
- 1, 58, 50, 42, 34, 26, 18,
- 10, 2, 59, 51, 43, 35, 27,
- 19, 11, 3, 60, 52, 44, 36,
- 63, 55, 47, 39, 31, 23, 15,
- 7, 62, 54, 46, 38, 30, 22,
- 14, 6, 61, 53, 45, 37, 29,
- 21, 13, 5, 28, 20, 12, 4
-};
-
-static uchar perm2[48] = { 14, 17, 11, 24, 1, 5,
- 3, 28, 15, 6, 21, 10,
- 23, 19, 12, 4, 26, 8,
- 16, 7, 27, 20, 13, 2,
- 41, 52, 31, 37, 47, 55,
- 30, 40, 51, 45, 33, 48,
- 44, 49, 39, 56, 34, 53,
- 46, 42, 50, 36, 29, 32
-};
-
-static uchar perm3[64] = { 58, 50, 42, 34, 26, 18, 10, 2,
- 60, 52, 44, 36, 28, 20, 12, 4,
- 62, 54, 46, 38, 30, 22, 14, 6,
- 64, 56, 48, 40, 32, 24, 16, 8,
- 57, 49, 41, 33, 25, 17, 9, 1,
- 59, 51, 43, 35, 27, 19, 11, 3,
- 61, 53, 45, 37, 29, 21, 13, 5,
- 63, 55, 47, 39, 31, 23, 15, 7
-};
-
-static uchar perm4[48] = { 32, 1, 2, 3, 4, 5,
- 4, 5, 6, 7, 8, 9,
- 8, 9, 10, 11, 12, 13,
- 12, 13, 14, 15, 16, 17,
- 16, 17, 18, 19, 20, 21,
- 20, 21, 22, 23, 24, 25,
- 24, 25, 26, 27, 28, 29,
- 28, 29, 30, 31, 32, 1
-};
-
-static uchar perm5[32] = { 16, 7, 20, 21,
- 29, 12, 28, 17,
- 1, 15, 23, 26,
- 5, 18, 31, 10,
- 2, 8, 24, 14,
- 32, 27, 3, 9,
- 19, 13, 30, 6,
- 22, 11, 4, 25
-};
-
-static uchar perm6[64] = { 40, 8, 48, 16, 56, 24, 64, 32,
- 39, 7, 47, 15, 55, 23, 63, 31,
- 38, 6, 46, 14, 54, 22, 62, 30,
- 37, 5, 45, 13, 53, 21, 61, 29,
- 36, 4, 44, 12, 52, 20, 60, 28,
- 35, 3, 43, 11, 51, 19, 59, 27,
- 34, 2, 42, 10, 50, 18, 58, 26,
- 33, 1, 41, 9, 49, 17, 57, 25
-};
-
-static uchar sc[16] = { 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 };
-
-static uchar sbox[8][4][16] = {
- {{14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7},
- {0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8},
- {4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0},
- {15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13} },
-
- {{15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10},
- {3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5},
- {0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15},
- {13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9} },
-
- {{10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8},
- {13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1},
- {13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7},
- {1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12} },
-
- {{7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15},
- {13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9},
- {10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4},
- {3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14} },
-
- {{2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9},
- {14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6},
- {4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14},
- {11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3} },
-
- {{12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11},
- {10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8},
- {9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6},
- {4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13} },
-
- {{4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1},
- {13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6},
- {1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2},
- {6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12} },
-
- {{13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7},
- {1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2},
- {7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8},
- {2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11} }
-};
-
-static void
-permute(char *out, char *in, uchar *p, int n)
-{
- int i;
- for (i = 0; i < n; i++)
- out[i] = in[p[i] - 1];
-}
-
-static void
-lshift(char *d, int count, int n)
-{
- char out[64];
- int i;
- for (i = 0; i < n; i++)
- out[i] = d[(i + count) % n];
- for (i = 0; i < n; i++)
- d[i] = out[i];
-}
-
-static void
-concat(char *out, char *in1, char *in2, int l1, int l2)
-{
- while (l1--)
- *out++ = *in1++;
- while (l2--)
- *out++ = *in2++;
-}
-
-static void
-xor(char *out, char *in1, char *in2, int n)
-{
- int i;
- for (i = 0; i < n; i++)
- out[i] = in1[i] ^ in2[i];
-}
-
-static void
-dohash(char *out, char *in, char *key, int forw)
-{
- int i, j, k;
- char *pk1;
- char c[28];
- char d[28];
- char *cd;
- char (*ki)[48];
- char *pd1;
- char l[32], r[32];
- char *rl;
-
- /* Have to reduce stack usage */
- pk1 = kmalloc(56+56+64+64, GFP_KERNEL);
- if (pk1 == NULL)
- return;
-
- ki = kmalloc(16*48, GFP_KERNEL);
- if (ki == NULL) {
- kfree(pk1);
- return;
- }
-
- cd = pk1 + 56;
- pd1 = cd + 56;
- rl = pd1 + 64;
-
- permute(pk1, key, perm1, 56);
-
- for (i = 0; i < 28; i++)
- c[i] = pk1[i];
- for (i = 0; i < 28; i++)
- d[i] = pk1[i + 28];
-
- for (i = 0; i < 16; i++) {
- lshift(c, sc[i], 28);
- lshift(d, sc[i], 28);
-
- concat(cd, c, d, 28, 28);
- permute(ki[i], cd, perm2, 48);
- }
-
- permute(pd1, in, perm3, 64);
-
- for (j = 0; j < 32; j++) {
- l[j] = pd1[j];
- r[j] = pd1[j + 32];
- }
-
- for (i = 0; i < 16; i++) {
- char *er; /* er[48] */
- char *erk; /* erk[48] */
- char b[8][6];
- char *cb; /* cb[32] */
- char *pcb; /* pcb[32] */
- char *r2; /* r2[32] */
-
- er = kmalloc(48+48+32+32+32, GFP_KERNEL);
- if (er == NULL) {
- kfree(pk1);
- kfree(ki);
- return;
- }
- erk = er+48;
- cb = erk+48;
- pcb = cb+32;
- r2 = pcb+32;
-
- permute(er, r, perm4, 48);
-
- xor(erk, er, ki[forw ? i : 15 - i], 48);
-
- for (j = 0; j < 8; j++)
- for (k = 0; k < 6; k++)
- b[j][k] = erk[j * 6 + k];
-
- for (j = 0; j < 8; j++) {
- int m, n;
- m = (b[j][0] << 1) | b[j][5];
-
- n = (b[j][1] << 3) | (b[j][2] << 2) | (b[j][3] <<
- 1) | b[j][4];
-
- for (k = 0; k < 4; k++)
- b[j][k] =
- (sbox[j][m][n] & (1 << (3 - k))) ? 1 : 0;
- }
-
- for (j = 0; j < 8; j++)
- for (k = 0; k < 4; k++)
- cb[j * 4 + k] = b[j][k];
- permute(pcb, cb, perm5, 32);
-
- xor(r2, l, pcb, 32);
-
- for (j = 0; j < 32; j++)
- l[j] = r[j];
-
- for (j = 0; j < 32; j++)
- r[j] = r2[j];
-
- kfree(er);
- }
-
- concat(rl, r, l, 32, 32);
-
- permute(out, rl, perm6, 64);
- kfree(pk1);
- kfree(ki);
-}
-
-static void
-str_to_key(unsigned char *str, unsigned char *key)
-{
- int i;
-
- key[0] = str[0] >> 1;
- key[1] = ((str[0] & 0x01) << 6) | (str[1] >> 2);
- key[2] = ((str[1] & 0x03) << 5) | (str[2] >> 3);
- key[3] = ((str[2] & 0x07) << 4) | (str[3] >> 4);
- key[4] = ((str[3] & 0x0F) << 3) | (str[4] >> 5);
- key[5] = ((str[4] & 0x1F) << 2) | (str[5] >> 6);
- key[6] = ((str[5] & 0x3F) << 1) | (str[6] >> 7);
- key[7] = str[6] & 0x7F;
- for (i = 0; i < 8; i++)
- key[i] = (key[i] << 1);
-}
-
-static void
-smbhash(unsigned char *out, const unsigned char *in, unsigned char *key,
- int forw)
-{
- int i;
- char *outb; /* outb[64] */
- char *inb; /* inb[64] */
- char *keyb; /* keyb[64] */
- unsigned char key2[8];
-
- outb = kmalloc(64 * 3, GFP_KERNEL);
- if (outb == NULL)
- return;
-
- inb = outb + 64;
- keyb = inb + 64;
-
- str_to_key(key, key2);
-
- for (i = 0; i < 64; i++) {
- inb[i] = (in[i / 8] & (1 << (7 - (i % 8)))) ? 1 : 0;
- keyb[i] = (key2[i / 8] & (1 << (7 - (i % 8)))) ? 1 : 0;
- outb[i] = 0;
- }
-
- dohash(outb, inb, keyb, forw);
-
- for (i = 0; i < 8; i++)
- out[i] = 0;
-
- for (i = 0; i < 64; i++) {
- if (outb[i])
- out[i / 8] |= (1 << (7 - (i % 8)));
- }
- kfree(outb);
-}
-
-void
-E_P16(unsigned char *p14, unsigned char *p16)
-{
- unsigned char sp8[8] =
- { 0x4b, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25 };
- smbhash(p16, sp8, p14, 1);
- smbhash(p16 + 8, sp8, p14 + 7, 1);
-}
-
-void
-E_P24(unsigned char *p21, const unsigned char *c8, unsigned char *p24)
-{
- smbhash(p24, c8, p21, 1);
- smbhash(p24 + 8, c8, p21 + 7, 1);
- smbhash(p24 + 16, c8, p21 + 14, 1);
-}
-
-#if 0 /* currently unused */
-static void
-D_P16(unsigned char *p14, unsigned char *in, unsigned char *out)
-{
- smbhash(out, in, p14, 0);
- smbhash(out + 8, in + 8, p14 + 7, 0);
-}
-
-static void
-E_old_pw_hash(unsigned char *p14, unsigned char *in, unsigned char *out)
-{
- smbhash(out, in, p14, 1);
- smbhash(out + 8, in + 8, p14 + 7, 1);
-}
-/* these routines are currently unneeded, but may be
- needed later */
-void
-cred_hash1(unsigned char *out, unsigned char *in, unsigned char *key)
-{
- unsigned char buf[8];
-
- smbhash(buf, in, key, 1);
- smbhash(out, buf, key + 9, 1);
-}
-
-void
-cred_hash2(unsigned char *out, unsigned char *in, unsigned char *key)
-{
- unsigned char buf[8];
- static unsigned char key2[8];
-
- smbhash(buf, in, key, 1);
- key2[0] = key[7];
- smbhash(out, buf, key2, 1);
-}
-
-void
-cred_hash3(unsigned char *out, unsigned char *in, unsigned char *key, int forw)
-{
- static unsigned char key2[8];
-
- smbhash(out, in, key, forw);
- key2[0] = key[7];
- smbhash(out + 8, in + 8, key2, forw);
-}
-#endif /* unneeded routines */
diff --git a/fs/cifs/smbencrypt.c b/fs/cifs/smbencrypt.c
index b5041c84998..1525d5e662b 100644
--- a/fs/cifs/smbencrypt.c
+++ b/fs/cifs/smbencrypt.c
@@ -47,6 +47,88 @@
#define SSVALX(buf,pos,val) (CVAL(buf,pos)=(val)&0xFF,CVAL(buf,pos+1)=(val)>>8)
#define SSVAL(buf,pos,val) SSVALX((buf),(pos),((__u16)(val)))
+static void
+str_to_key(unsigned char *str, unsigned char *key)
+{
+ int i;
+
+ key[0] = str[0] >> 1;
+ key[1] = ((str[0] & 0x01) << 6) | (str[1] >> 2);
+ key[2] = ((str[1] & 0x03) << 5) | (str[2] >> 3);
+ key[3] = ((str[2] & 0x07) << 4) | (str[3] >> 4);
+ key[4] = ((str[3] & 0x0F) << 3) | (str[4] >> 5);
+ key[5] = ((str[4] & 0x1F) << 2) | (str[5] >> 6);
+ key[6] = ((str[5] & 0x3F) << 1) | (str[6] >> 7);
+ key[7] = str[6] & 0x7F;
+ for (i = 0; i < 8; i++)
+ key[i] = (key[i] << 1);
+}
+
+static int
+smbhash(unsigned char *out, const unsigned char *in, unsigned char *key)
+{
+ int rc;
+ unsigned char key2[8];
+ struct crypto_blkcipher *tfm_des;
+ struct scatterlist sgin, sgout;
+ struct blkcipher_desc desc;
+
+ str_to_key(key, key2);
+
+ tfm_des = crypto_alloc_blkcipher("ecb(des)", 0, CRYPTO_ALG_ASYNC);
+ if (IS_ERR(tfm_des)) {
+ rc = PTR_ERR(tfm_des);
+ cERROR(1, "could not allocate des crypto API\n");
+ goto smbhash_err;
+ }
+
+ desc.tfm = tfm_des;
+
+ crypto_blkcipher_setkey(tfm_des, key2, 8);
+
+ sg_init_one(&sgin, in, 8);
+ sg_init_one(&sgout, out, 8);
+
+ rc = crypto_blkcipher_encrypt(&desc, &sgout, &sgin, 8);
+ if (rc) {
+ cERROR(1, "could not encrypt crypt key rc: %d\n", rc);
+ crypto_free_blkcipher(tfm_des);
+ goto smbhash_err;
+ }
+
+smbhash_err:
+ return rc;
+}
+
+static int
+E_P16(unsigned char *p14, unsigned char *p16)
+{
+ int rc;
+ unsigned char sp8[8] =
+ { 0x4b, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25 };
+
+ rc = smbhash(p16, sp8, p14);
+ if (rc)
+ return rc;
+ rc = smbhash(p16 + 8, sp8, p14 + 7);
+ return rc;
+}
+
+static int
+E_P24(unsigned char *p21, const unsigned char *c8, unsigned char *p24)
+{
+ int rc;
+
+ rc = smbhash(p24, c8, p21);
+ if (rc)
+ return rc;
+ rc = smbhash(p24 + 8, c8, p21 + 7);
+ if (rc)
+ return rc;
+ rc = smbhash(p24 + 16, c8, p21 + 14);
+ return rc;
+}
+
/* produce a md4 message digest from data of length n bytes */
int
mdfour(unsigned char *md4_hash, unsigned char *link_str, int link_len)
@@ -87,40 +169,30 @@ mdfour_err:
return rc;
}
-/* Does the des encryption from the NT or LM MD4 hash. */
-static void
-SMBOWFencrypt(unsigned char passwd[16], const unsigned char *c8,
- unsigned char p24[24])
-{
- unsigned char p21[21];
-
- memset(p21, '\0', 21);
-
- memcpy(p21, passwd, 16);
- E_P24(p21, c8, p24);
-}
-
/*
This implements the X/Open SMB password encryption
It takes a password, a 8 byte "crypt key" and puts 24 bytes of
encrypted password into p24 */
/* Note that password must be uppercased and null terminated */
-void
+int
SMBencrypt(unsigned char *passwd, const unsigned char *c8, unsigned char *p24)
{
- unsigned char p14[15], p21[21];
+ int rc;
+ unsigned char p14[14], p16[16], p21[21];
- memset(p21, '\0', 21);
memset(p14, '\0', 14);
- strncpy((char *) p14, (char *) passwd, 14);
+ memset(p16, '\0', 16);
+ memset(p21, '\0', 21);
-/* strupper((char *)p14); *//* BB at least uppercase the easy range */
- E_P16(p14, p21);
+ memcpy(p14, passwd, 14);
+ rc = E_P16(p14, p16);
+ if (rc)
+ return rc;
- SMBOWFencrypt(p21, c8, p24);
+ memcpy(p21, p16, 16);
+ rc = E_P24(p21, c8, p24);
- memset(p14, 0, 15);
- memset(p21, 0, 21);
+ return rc;
}
/* Routines for Windows NT MD4 Hash functions. */
@@ -279,16 +351,18 @@ int
SMBNTencrypt(unsigned char *passwd, unsigned char *c8, unsigned char *p24)
{
int rc;
- unsigned char p21[21];
+ unsigned char p16[16], p21[21];
+ memset(p16, '\0', 16);
memset(p21, '\0', 21);
- rc = E_md4hash(passwd, p21);
+ rc = E_md4hash(passwd, p16);
if (rc) {
cFYI(1, "%s Can't generate NT hash, error: %d", __func__, rc);
return rc;
}
- SMBOWFencrypt(p21, c8, p24);
+ memcpy(p21, p16, 16);
+ rc = E_P24(p21, c8, p24);
return rc;
}
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 46d8756f2b2..f2513fb8c39 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -129,7 +129,7 @@ smb_sendv(struct TCP_Server_Info *server, struct kvec *iov, int n_vec)
unsigned int len = iov[0].iov_len;
unsigned int total_len;
int first_vec = 0;
- unsigned int smb_buf_length = smb_buffer->smb_buf_length;
+ unsigned int smb_buf_length = be32_to_cpu(smb_buffer->smb_buf_length);
struct socket *ssocket = server->ssocket;
if (ssocket == NULL)
@@ -144,17 +144,10 @@ smb_sendv(struct TCP_Server_Info *server, struct kvec *iov, int n_vec)
else
smb_msg.msg_flags = MSG_NOSIGNAL;
- /* smb header is converted in header_assemble. bcc and rest of SMB word
- area, and byte area if necessary, is converted to littleendian in
- cifssmb.c and RFC1001 len is converted to bigendian in smb_send
- Flags2 is converted in SendReceive */
-
-
total_len = 0;
for (i = 0; i < n_vec; i++)
total_len += iov[i].iov_len;
- smb_buffer->smb_buf_length = cpu_to_be32(smb_buffer->smb_buf_length);
cFYI(1, "Sending smb: total_len %d", total_len);
dump_smb(smb_buffer, len);
@@ -243,7 +236,7 @@ smb_sendv(struct TCP_Server_Info *server, struct kvec *iov, int n_vec)
/* Don't want to modify the buffer as a
side effect of this call. */
- smb_buffer->smb_buf_length = smb_buf_length;
+ smb_buffer->smb_buf_length = cpu_to_be32(smb_buf_length);
return rc;
}
@@ -387,7 +380,7 @@ cifs_call_async(struct TCP_Server_Info *server, struct smb_hdr *in_buf,
#ifdef CONFIG_CIFS_STATS2
atomic_inc(&server->inSend);
#endif
- rc = smb_send(server, in_buf, in_buf->smb_buf_length);
+ rc = smb_send(server, in_buf, be32_to_cpu(in_buf->smb_buf_length));
#ifdef CONFIG_CIFS_STATS2
atomic_dec(&server->inSend);
mid->when_sent = jiffies;
@@ -422,7 +415,7 @@ SendReceiveNoRsp(const unsigned int xid, struct cifsSesInfo *ses,
int resp_buf_type;
iov[0].iov_base = (char *)in_buf;
- iov[0].iov_len = in_buf->smb_buf_length + 4;
+ iov[0].iov_len = be32_to_cpu(in_buf->smb_buf_length) + 4;
flags |= CIFS_NO_RESP;
rc = SendReceive2(xid, ses, iov, 1, &resp_buf_type, flags);
cFYI(DBG2, "SendRcvNoRsp flags %d rc %d", flags, rc);
@@ -488,10 +481,10 @@ send_nt_cancel(struct TCP_Server_Info *server, struct smb_hdr *in_buf,
int rc = 0;
/* -4 for RFC1001 length and +2 for BCC field */
- in_buf->smb_buf_length = sizeof(struct smb_hdr) - 4 + 2;
+ in_buf->smb_buf_length = cpu_to_be32(sizeof(struct smb_hdr) - 4 + 2);
in_buf->Command = SMB_COM_NT_CANCEL;
in_buf->WordCount = 0;
- put_bcc_le(0, in_buf);
+ put_bcc(0, in_buf);
mutex_lock(&server->srv_mutex);
rc = cifs_sign_smb(in_buf, server, &mid->sequence_number);
@@ -499,7 +492,7 @@ send_nt_cancel(struct TCP_Server_Info *server, struct smb_hdr *in_buf,
mutex_unlock(&server->srv_mutex);
return rc;
}
- rc = smb_send(server, in_buf, in_buf->smb_buf_length);
+ rc = smb_send(server, in_buf, be32_to_cpu(in_buf->smb_buf_length));
mutex_unlock(&server->srv_mutex);
cFYI(1, "issued NT_CANCEL for mid %u, rc = %d",
@@ -612,7 +605,7 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
return rc;
}
- receive_len = midQ->resp_buf->smb_buf_length;
+ receive_len = be32_to_cpu(midQ->resp_buf->smb_buf_length);
if (receive_len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) {
cERROR(1, "Frame too large received. Length: %d Xid: %d",
@@ -651,11 +644,6 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
rc = map_smb_to_linux_error(midQ->resp_buf,
flags & CIFS_LOG_ERROR);
- /* convert ByteCount if necessary */
- if (receive_len >= sizeof(struct smb_hdr) - 4
- /* do not count RFC1001 header */ +
- (2 * midQ->resp_buf->WordCount) + 2 /* bcc */ )
- put_bcc(get_bcc_le(midQ->resp_buf), midQ->resp_buf);
if ((flags & CIFS_NO_RESP) == 0)
midQ->resp_buf = NULL; /* mark it so buf will
not be freed by
@@ -698,9 +686,10 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
to the same server. We may make this configurable later or
use ses->maxReq */
- if (in_buf->smb_buf_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) {
+ if (be32_to_cpu(in_buf->smb_buf_length) > CIFSMaxBufSize +
+ MAX_CIFS_HDR_SIZE - 4) {
cERROR(1, "Illegal length, greater than maximum frame, %d",
- in_buf->smb_buf_length);
+ be32_to_cpu(in_buf->smb_buf_length));
return -EIO;
}
@@ -733,7 +722,7 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
#ifdef CONFIG_CIFS_STATS2
atomic_inc(&ses->server->inSend);
#endif
- rc = smb_send(ses->server, in_buf, in_buf->smb_buf_length);
+ rc = smb_send(ses->server, in_buf, be32_to_cpu(in_buf->smb_buf_length));
#ifdef CONFIG_CIFS_STATS2
atomic_dec(&ses->server->inSend);
midQ->when_sent = jiffies;
@@ -768,7 +757,7 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
return rc;
}
- receive_len = midQ->resp_buf->smb_buf_length;
+ receive_len = be32_to_cpu(midQ->resp_buf->smb_buf_length);
if (receive_len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) {
cERROR(1, "Frame too large received. Length: %d Xid: %d",
@@ -781,7 +770,7 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
if (midQ->resp_buf && out_buf
&& (midQ->midState == MID_RESPONSE_RECEIVED)) {
- out_buf->smb_buf_length = receive_len;
+ out_buf->smb_buf_length = cpu_to_be32(receive_len);
memcpy((char *)out_buf + 4,
(char *)midQ->resp_buf + 4,
receive_len);
@@ -800,16 +789,10 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
}
}
- *pbytes_returned = out_buf->smb_buf_length;
+ *pbytes_returned = be32_to_cpu(out_buf->smb_buf_length);
/* BB special case reconnect tid and uid here? */
rc = map_smb_to_linux_error(out_buf, 0 /* no log */ );
-
- /* convert ByteCount if necessary */
- if (receive_len >= sizeof(struct smb_hdr) - 4
- /* do not count RFC1001 header */ +
- (2 * out_buf->WordCount) + 2 /* bcc */ )
- put_bcc(get_bcc_le(midQ->resp_buf), midQ->resp_buf);
} else {
rc = -EIO;
cERROR(1, "Bad MID state?");
@@ -877,9 +860,10 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon,
to the same server. We may make this configurable later or
use ses->maxReq */
- if (in_buf->smb_buf_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) {
+ if (be32_to_cpu(in_buf->smb_buf_length) > CIFSMaxBufSize +
+ MAX_CIFS_HDR_SIZE - 4) {
cERROR(1, "Illegal length, greater than maximum frame, %d",
- in_buf->smb_buf_length);
+ be32_to_cpu(in_buf->smb_buf_length));
return -EIO;
}
@@ -910,7 +894,7 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon,
#ifdef CONFIG_CIFS_STATS2
atomic_inc(&ses->server->inSend);
#endif
- rc = smb_send(ses->server, in_buf, in_buf->smb_buf_length);
+ rc = smb_send(ses->server, in_buf, be32_to_cpu(in_buf->smb_buf_length));
#ifdef CONFIG_CIFS_STATS2
atomic_dec(&ses->server->inSend);
midQ->when_sent = jiffies;
@@ -977,7 +961,7 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon,
if (rc != 0)
return rc;
- receive_len = midQ->resp_buf->smb_buf_length;
+ receive_len = be32_to_cpu(midQ->resp_buf->smb_buf_length);
if (receive_len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) {
cERROR(1, "Frame too large received. Length: %d Xid: %d",
receive_len, xid);
@@ -993,7 +977,7 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon,
goto out;
}
- out_buf->smb_buf_length = receive_len;
+ out_buf->smb_buf_length = cpu_to_be32(receive_len);
memcpy((char *)out_buf + 4,
(char *)midQ->resp_buf + 4,
receive_len);
@@ -1012,17 +996,11 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon,
}
}
- *pbytes_returned = out_buf->smb_buf_length;
+ *pbytes_returned = be32_to_cpu(out_buf->smb_buf_length);
/* BB special case reconnect tid and uid here? */
rc = map_smb_to_linux_error(out_buf, 0 /* no log */ );
- /* convert ByteCount if necessary */
- if (receive_len >= sizeof(struct smb_hdr) - 4
- /* do not count RFC1001 header */ +
- (2 * out_buf->WordCount) + 2 /* bcc */ )
- put_bcc(get_bcc_le(out_buf), out_buf);
-
out:
delete_mid(midQ);
if (rstart && rc == -EACCES)
diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c
index eae2a149160..912995e013e 100644
--- a/fs/cifs/xattr.c
+++ b/fs/cifs/xattr.c
@@ -112,6 +112,7 @@ int cifs_setxattr(struct dentry *direntry, const char *ea_name,
struct cifsTconInfo *pTcon;
struct super_block *sb;
char *full_path;
+ struct cifs_ntsd *pacl;
if (direntry == NULL)
return -EIO;
@@ -166,6 +167,25 @@ int cifs_setxattr(struct dentry *direntry, const char *ea_name,
rc = CIFSSMBSetEA(xid, pTcon, full_path, ea_name, ea_value,
(__u16)value_size, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ } else if (strncmp(ea_name, CIFS_XATTR_CIFS_ACL,
+ strlen(CIFS_XATTR_CIFS_ACL)) == 0) {
+ pacl = kmalloc(value_size, GFP_KERNEL);
+ if (!pacl) {
+ cFYI(1, "%s: Can't allocate memory for ACL",
+ __func__);
+ rc = -ENOMEM;
+ } else {
+#ifdef CONFIG_CIFS_ACL
+ memcpy(pacl, ea_value, value_size);
+ rc = set_cifs_acl(pacl, value_size,
+ direntry->d_inode, full_path);
+ if (rc == 0) /* force revalidate of the inode */
+ CIFS_I(direntry->d_inode)->time = 0;
+ kfree(pacl);
+#else
+ cFYI(1, "Set CIFS ACL not supported yet");
+#endif /* CONFIG_CIFS_ACL */
+ }
} else {
int temp;
temp = strncmp(ea_name, POSIX_ACL_XATTR_ACCESS,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-10-17 14:28:52 +0000