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-rw-r--r--fs/cifs/CHANGES17
-rw-r--r--fs/cifs/README19
-rw-r--r--fs/cifs/cifs_debug.c277
-rw-r--r--fs/cifs/cifs_dfs_ref.c71
-rw-r--r--fs/cifs/cifs_spnego.c4
-rw-r--r--fs/cifs/cifsfs.c82
-rw-r--r--fs/cifs/cifsfs.h2
-rw-r--r--fs/cifs/cifsglob.h53
-rw-r--r--fs/cifs/cifsproto.h2
-rw-r--r--fs/cifs/cifssmb.c138
-rw-r--r--fs/cifs/connect.c919
-rw-r--r--fs/cifs/file.c107
-rw-r--r--fs/cifs/inode.c213
-rw-r--r--fs/cifs/misc.c93
-rw-r--r--fs/cifs/readdir.c8
-rw-r--r--fs/cifs/transport.c48
16 files changed, 1178 insertions, 875 deletions
diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index 06e521a945c..e078b7aea14 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -1,3 +1,19 @@
+Version 1.55
+------------
+Various fixes to make delete of open files behavior more predictable
+(when delete of an open file fails we mark the file as "delete-on-close"
+in a way that more servers accept, but only if we can first rename the
+file to a temporary name). Add experimental support for more safely
+handling fcntl(F_SETLEASE). Convert cifs to using blocking tcp
+sends, and also let tcp autotune the socket send and receive buffers.
+This reduces the number of EAGAIN errors returned by TCP/IP in
+high stress workloads (and the number of retries on socket writes
+when sending large SMBWriteX requests). Fix case in which a portion of
+data can in some cases not get written to the file on the server before the
+file is closed. Fix DFS parsing to properly handle path consumed field,
+and to handle certain codepage conversions better. Fix mount and
+umount race that can cause oops in mount or umount or reconnect.
+
Version 1.54
------------
Fix premature write failure on congested networks (we would give up
@@ -13,6 +29,7 @@ on dns_upcall (resolving DFS referralls). Fix plain text password
authentication (requires setting SecurityFlags to 0x30030 to enable
lanman and plain text though). Fix writes to be at correct offset when
file is open with O_APPEND and file is on a directio (forcediretio) mount.
+Fix bug in rewinding readdir directory searches. Add nodfs mount option.
Version 1.53
------------
diff --git a/fs/cifs/README b/fs/cifs/README
index bd2343d4c6a..a439dc1739b 100644
--- a/fs/cifs/README
+++ b/fs/cifs/README
@@ -463,6 +463,9 @@ A partial list of the supported mount options follows:
with cifs style mandatory byte range locks (and most
cifs servers do not yet support requesting advisory
byte range locks).
+ nodfs Disable DFS (global name space support) even if the
+ server claims to support it. This can help work around
+ a problem with parsing of DFS paths with Samba 3.0.24 server.
remount remount the share (often used to change from ro to rw mounts
or vice versa)
cifsacl Report mode bits (e.g. on stat) based on the Windows ACL for
@@ -488,6 +491,19 @@ A partial list of the supported mount options follows:
Note that this differs from the sign mount option in that it
causes encryption of data sent over this mounted share but other
shares mounted to the same server are unaffected.
+ locallease This option is rarely needed. Fcntl F_SETLEASE is
+ used by some applications such as Samba and NFSv4 server to
+ check to see whether a file is cacheable. CIFS has no way
+ to explicitly request a lease, but can check whether a file
+ is cacheable (oplocked). Unfortunately, even if a file
+ is not oplocked, it could still be cacheable (ie cifs client
+ could grant fcntl leases if no other local processes are using
+ the file) for cases for example such as when the server does not
+ support oplocks and the user is sure that the only updates to
+ the file will be from this client. Specifying this mount option
+ will allow the cifs client to check for leases (only) locally
+ for files which are not oplocked instead of denying leases
+ in that case. (EXPERIMENTAL)
sec Security mode. Allowed values are:
none attempt to connection as a null user (no name)
krb5 Use Kerberos version 5 authentication
@@ -638,6 +654,9 @@ 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)
diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index 69a12aae91d..490e34bbf27 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -107,12 +107,13 @@ void cifs_dump_mids(struct TCP_Server_Info *server)
#ifdef CONFIG_PROC_FS
static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
{
- struct list_head *tmp;
- struct list_head *tmp1;
+ struct list_head *tmp1, *tmp2, *tmp3;
struct mid_q_entry *mid_entry;
+ struct TCP_Server_Info *server;
struct cifsSesInfo *ses;
struct cifsTconInfo *tcon;
- int i;
+ int i, j;
+ __u32 dev_type;
seq_puts(m,
"Display Internal CIFS Data Structures for Debugging\n"
@@ -122,46 +123,78 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
seq_printf(m, "Servers:");
i = 0;
- read_lock(&GlobalSMBSeslock);
- list_for_each(tmp, &GlobalSMBSessionList) {
+ read_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp1, &cifs_tcp_ses_list) {
+ server = list_entry(tmp1, struct TCP_Server_Info,
+ tcp_ses_list);
i++;
- ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
- if ((ses->serverDomain == NULL) || (ses->serverOS == NULL) ||
- (ses->serverNOS == NULL)) {
- seq_printf(m, "\nentry for %s not fully "
- "displayed\n\t", ses->serverName);
- } else {
- seq_printf(m,
- "\n%d) Name: %s Domain: %s Mounts: %d OS:"
- " %s \n\tNOS: %s\tCapability: 0x%x\n\tSMB"
+ list_for_each(tmp2, &server->smb_ses_list) {
+ ses = list_entry(tmp2, struct cifsSesInfo,
+ smb_ses_list);
+ if ((ses->serverDomain == NULL) ||
+ (ses->serverOS == NULL) ||
+ (ses->serverNOS == NULL)) {
+ seq_printf(m, "\n%d) entry for %s not fully "
+ "displayed\n\t", i, ses->serverName);
+ } else {
+ seq_printf(m,
+ "\n%d) Name: %s Domain: %s Uses: %d OS:"
+ " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB"
" session status: %d\t",
i, ses->serverName, ses->serverDomain,
- atomic_read(&ses->inUse),
- ses->serverOS, ses->serverNOS,
+ ses->ses_count, ses->serverOS, ses->serverNOS,
ses->capabilities, ses->status);
- }
- if (ses->server) {
+ }
seq_printf(m, "TCP status: %d\n\tLocal Users To "
- "Server: %d SecMode: 0x%x Req On Wire: %d",
- ses->server->tcpStatus,
- atomic_read(&ses->server->socketUseCount),
- ses->server->secMode,
- atomic_read(&ses->server->inFlight));
+ "Server: %d SecMode: 0x%x Req On Wire: %d",
+ server->tcpStatus, server->srv_count,
+ server->secMode,
+ atomic_read(&server->inFlight));
#ifdef CONFIG_CIFS_STATS2
seq_printf(m, " In Send: %d In MaxReq Wait: %d",
- atomic_read(&ses->server->inSend),
- atomic_read(&ses->server->num_waiters));
+ atomic_read(&server->inSend),
+ atomic_read(&server->num_waiters));
#endif
- seq_puts(m, "\nMIDs:\n");
+ seq_puts(m, "\n\tShares:");
+ j = 0;
+ list_for_each(tmp3, &ses->tcon_list) {
+ tcon = list_entry(tmp3, struct cifsTconInfo,
+ tcon_list);
+ ++j;
+ dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
+ seq_printf(m, "\n\t%d) %s Mounts: %d ", j,
+ tcon->treeName, tcon->tc_count);
+ if (tcon->nativeFileSystem) {
+ seq_printf(m, "Type: %s ",
+ tcon->nativeFileSystem);
+ }
+ seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
+ "\nPathComponentMax: %d Status: 0x%d",
+ le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
+ le32_to_cpu(tcon->fsAttrInfo.Attributes),
+ le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
+ tcon->tidStatus);
+ if (dev_type == FILE_DEVICE_DISK)
+ seq_puts(m, " type: DISK ");
+ else if (dev_type == FILE_DEVICE_CD_ROM)
+ seq_puts(m, " type: CDROM ");
+ else
+ seq_printf(m, " type: %d ", dev_type);
+
+ if (tcon->need_reconnect)
+ seq_puts(m, "\tDISCONNECTED ");
+ seq_putc(m, '\n');
+ }
+
+ seq_puts(m, "\n\tMIDs:\n");
spin_lock(&GlobalMid_Lock);
- list_for_each(tmp1, &ses->server->pending_mid_q) {
- mid_entry = list_entry(tmp1, struct
- mid_q_entry,
+ list_for_each(tmp3, &server->pending_mid_q) {
+ mid_entry = list_entry(tmp3, struct mid_q_entry,
qhead);
- seq_printf(m, "State: %d com: %d pid:"
+ seq_printf(m, "\tState: %d com: %d pid:"
" %d tsk: %p mid %d\n",
mid_entry->midState,
(int)mid_entry->command,
@@ -171,44 +204,8 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
}
spin_unlock(&GlobalMid_Lock);
}
-
- }
- read_unlock(&GlobalSMBSeslock);
- seq_putc(m, '\n');
-
- seq_puts(m, "Shares:");
-
- i = 0;
- read_lock(&GlobalSMBSeslock);
- list_for_each(tmp, &GlobalTreeConnectionList) {
- __u32 dev_type;
- i++;
- tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
- dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
- seq_printf(m, "\n%d) %s Uses: %d ", i,
- tcon->treeName, atomic_read(&tcon->useCount));
- if (tcon->nativeFileSystem) {
- seq_printf(m, "Type: %s ",
- tcon->nativeFileSystem);
- }
- seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
- "\nPathComponentMax: %d Status: %d",
- le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
- le32_to_cpu(tcon->fsAttrInfo.Attributes),
- le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
- tcon->tidStatus);
- if (dev_type == FILE_DEVICE_DISK)
- seq_puts(m, " type: DISK ");
- else if (dev_type == FILE_DEVICE_CD_ROM)
- seq_puts(m, " type: CDROM ");
- else
- seq_printf(m, " type: %d ", dev_type);
-
- if (tcon->tidStatus == CifsNeedReconnect)
- seq_puts(m, "\tDISCONNECTED ");
}
- read_unlock(&GlobalSMBSeslock);
-
+ read_unlock(&cifs_tcp_ses_lock);
seq_putc(m, '\n');
/* BB add code to dump additional info such as TCP session info now */
@@ -234,7 +231,9 @@ static ssize_t cifs_stats_proc_write(struct file *file,
{
char c;
int rc;
- struct list_head *tmp;
+ struct list_head *tmp1, *tmp2, *tmp3;
+ struct TCP_Server_Info *server;
+ struct cifsSesInfo *ses;
struct cifsTconInfo *tcon;
rc = get_user(c, buffer);
@@ -242,33 +241,42 @@ static ssize_t cifs_stats_proc_write(struct file *file,
return rc;
if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
- read_lock(&GlobalSMBSeslock);
#ifdef CONFIG_CIFS_STATS2
atomic_set(&totBufAllocCount, 0);
atomic_set(&totSmBufAllocCount, 0);
#endif /* CONFIG_CIFS_STATS2 */
- list_for_each(tmp, &GlobalTreeConnectionList) {
- tcon = list_entry(tmp, struct cifsTconInfo,
- cifsConnectionList);
- atomic_set(&tcon->num_smbs_sent, 0);
- atomic_set(&tcon->num_writes, 0);
- atomic_set(&tcon->num_reads, 0);
- atomic_set(&tcon->num_oplock_brks, 0);
- atomic_set(&tcon->num_opens, 0);
- atomic_set(&tcon->num_closes, 0);
- atomic_set(&tcon->num_deletes, 0);
- atomic_set(&tcon->num_mkdirs, 0);
- atomic_set(&tcon->num_rmdirs, 0);
- atomic_set(&tcon->num_renames, 0);
- atomic_set(&tcon->num_t2renames, 0);
- atomic_set(&tcon->num_ffirst, 0);
- atomic_set(&tcon->num_fnext, 0);
- atomic_set(&tcon->num_fclose, 0);
- atomic_set(&tcon->num_hardlinks, 0);
- atomic_set(&tcon->num_symlinks, 0);
- atomic_set(&tcon->num_locks, 0);
+ read_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp1, &cifs_tcp_ses_list) {
+ server = list_entry(tmp1, struct TCP_Server_Info,
+ tcp_ses_list);
+ list_for_each(tmp2, &server->smb_ses_list) {
+ ses = list_entry(tmp2, struct cifsSesInfo,
+ smb_ses_list);
+ list_for_each(tmp3, &ses->tcon_list) {
+ tcon = list_entry(tmp3,
+ struct cifsTconInfo,
+ tcon_list);
+ atomic_set(&tcon->num_smbs_sent, 0);
+ atomic_set(&tcon->num_writes, 0);
+ atomic_set(&tcon->num_reads, 0);
+ atomic_set(&tcon->num_oplock_brks, 0);
+ atomic_set(&tcon->num_opens, 0);
+ atomic_set(&tcon->num_closes, 0);
+ atomic_set(&tcon->num_deletes, 0);
+ atomic_set(&tcon->num_mkdirs, 0);
+ atomic_set(&tcon->num_rmdirs, 0);
+ atomic_set(&tcon->num_renames, 0);
+ atomic_set(&tcon->num_t2renames, 0);
+ atomic_set(&tcon->num_ffirst, 0);
+ atomic_set(&tcon->num_fnext, 0);
+ atomic_set(&tcon->num_fclose, 0);
+ atomic_set(&tcon->num_hardlinks, 0);
+ atomic_set(&tcon->num_symlinks, 0);
+ atomic_set(&tcon->num_locks, 0);
+ }
+ }
}
- read_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
}
return count;
@@ -277,7 +285,9 @@ static ssize_t cifs_stats_proc_write(struct file *file,
static int cifs_stats_proc_show(struct seq_file *m, void *v)
{
int i;
- struct list_head *tmp;
+ struct list_head *tmp1, *tmp2, *tmp3;
+ struct TCP_Server_Info *server;
+ struct cifsSesInfo *ses;
struct cifsTconInfo *tcon;
seq_printf(m,
@@ -306,44 +316,55 @@ static int cifs_stats_proc_show(struct seq_file *m, void *v)
GlobalCurrentXid, GlobalMaxActiveXid);
i = 0;
- read_lock(&GlobalSMBSeslock);
- list_for_each(tmp, &GlobalTreeConnectionList) {
- i++;
- tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
- seq_printf(m, "\n%d) %s", i, tcon->treeName);
- if (tcon->tidStatus == CifsNeedReconnect)
- seq_puts(m, "\tDISCONNECTED ");
- seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
- atomic_read(&tcon->num_smbs_sent),
- atomic_read(&tcon->num_oplock_brks));
- seq_printf(m, "\nReads: %d Bytes: %lld",
- atomic_read(&tcon->num_reads),
- (long long)(tcon->bytes_read));
- seq_printf(m, "\nWrites: %d Bytes: %lld",
- atomic_read(&tcon->num_writes),
- (long long)(tcon->bytes_written));
- seq_printf(m,
- "\nLocks: %d HardLinks: %d Symlinks: %d",
- atomic_read(&tcon->num_locks),
- atomic_read(&tcon->num_hardlinks),
- atomic_read(&tcon->num_symlinks));
-
- seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
- atomic_read(&tcon->num_opens),
- atomic_read(&tcon->num_closes),
- atomic_read(&tcon->num_deletes));
- seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
- atomic_read(&tcon->num_mkdirs),
- atomic_read(&tcon->num_rmdirs));
- seq_printf(m, "\nRenames: %d T2 Renames %d",
- atomic_read(&tcon->num_renames),
- atomic_read(&tcon->num_t2renames));
- seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
- atomic_read(&tcon->num_ffirst),
- atomic_read(&tcon->num_fnext),
- atomic_read(&tcon->num_fclose));
+ read_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp1, &cifs_tcp_ses_list) {
+ server = list_entry(tmp1, struct TCP_Server_Info,
+ tcp_ses_list);
+ list_for_each(tmp2, &server->smb_ses_list) {
+ ses = list_entry(tmp2, struct cifsSesInfo,
+ smb_ses_list);
+ list_for_each(tmp3, &ses->tcon_list) {
+ tcon = list_entry(tmp3,
+ struct cifsTconInfo,
+ tcon_list);
+ i++;
+ seq_printf(m, "\n%d) %s", i, tcon->treeName);
+ if (tcon->need_reconnect)
+ seq_puts(m, "\tDISCONNECTED ");
+ seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
+ atomic_read(&tcon->num_smbs_sent),
+ atomic_read(&tcon->num_oplock_brks));
+ seq_printf(m, "\nReads: %d Bytes: %lld",
+ atomic_read(&tcon->num_reads),
+ (long long)(tcon->bytes_read));
+ seq_printf(m, "\nWrites: %d Bytes: %lld",
+ atomic_read(&tcon->num_writes),
+ (long long)(tcon->bytes_written));
+ seq_printf(m, "\nLocks: %d HardLinks: %d "
+ "Symlinks: %d",
+ atomic_read(&tcon->num_locks),
+ atomic_read(&tcon->num_hardlinks),
+ atomic_read(&tcon->num_symlinks));
+ seq_printf(m, "\nOpens: %d Closes: %d"
+ "Deletes: %d",
+ atomic_read(&tcon->num_opens),
+ atomic_read(&tcon->num_closes),
+ atomic_read(&tcon->num_deletes));
+ seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
+ atomic_read(&tcon->num_mkdirs),
+ atomic_read(&tcon->num_rmdirs));
+ seq_printf(m, "\nRenames: %d T2 Renames %d",
+ atomic_read(&tcon->num_renames),
+ atomic_read(&tcon->num_t2renames));
+ seq_printf(m, "\nFindFirst: %d FNext %d "
+ "FClose %d",
+ atomic_read(&tcon->num_ffirst),
+ atomic_read(&tcon->num_fnext),
+ atomic_read(&tcon->num_fclose));
+ }
+ }
}
- read_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
seq_putc(m, '\n');
return 0;
diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c
index d2c8eef84f3..e1c18362ba4 100644
--- a/fs/cifs/cifs_dfs_ref.c
+++ b/fs/cifs/cifs_dfs_ref.c
@@ -106,7 +106,8 @@ static char *cifs_get_share_name(const char *node_name)
/**
* compose_mount_options - creates mount options for refferral
* @sb_mountdata: parent/root DFS mount options (template)
- * @ref_unc: refferral server UNC
+ * @dentry: point where we are going to mount
+ * @ref: server's referral
* @devname: pointer for saving device name
*
* creates mount options for submount based on template options sb_mountdata
@@ -116,7 +117,8 @@ static char *cifs_get_share_name(const char *node_name)
* Caller is responcible for freeing retunrned value if it is not error.
*/
static char *compose_mount_options(const char *sb_mountdata,
- const char *ref_unc,
+ struct dentry *dentry,
+ const struct dfs_info3_param *ref,
char **devname)
{
int rc;
@@ -126,11 +128,12 @@ static char *compose_mount_options(const char *sb_mountdata,
char *srvIP = NULL;
char sep = ',';
int off, noff;
+ char *fullpath;
if (sb_mountdata == NULL)
return ERR_PTR(-EINVAL);
- *devname = cifs_get_share_name(ref_unc);
+ *devname = cifs_get_share_name(ref->node_name);
rc = dns_resolve_server_name_to_ip(*devname, &srvIP);
if (rc != 0) {
cERROR(1, ("%s: Failed to resolve server part of %s to IP",
@@ -138,7 +141,12 @@ static char *compose_mount_options(const char *sb_mountdata,
mountdata = ERR_PTR(rc);
goto compose_mount_options_out;
}
- md_len = strlen(sb_mountdata) + strlen(srvIP) + strlen(ref_unc) + 3;
+ /* md_len = strlen(...) + 12 for 'sep+prefixpath='
+ * assuming that we have 'unc=' and 'ip=' in
+ * the original sb_mountdata
+ */
+ md_len = strlen(sb_mountdata) + strlen(srvIP) +
+ strlen(ref->node_name) + 12;
mountdata = kzalloc(md_len+1, GFP_KERNEL);
if (mountdata == NULL) {
mountdata = ERR_PTR(-ENOMEM);
@@ -152,41 +160,56 @@ static char *compose_mount_options(const char *sb_mountdata,
strncpy(mountdata, sb_mountdata, 5);
off += 5;
}
- while ((tkn_e = strchr(sb_mountdata+off, sep))) {
- noff = (tkn_e - (sb_mountdata+off)) + 1;
- if (strnicmp(sb_mountdata+off, "unc=", 4) == 0) {
+
+ do {
+ tkn_e = strchr(sb_mountdata + off, sep);
+ if (tkn_e == NULL)
+ noff = strlen(sb_mountdata + off);
+ else
+ noff = tkn_e - (sb_mountdata + off) + 1;
+
+ if (strnicmp(sb_mountdata + off, "unc=", 4) == 0) {
off += noff;
continue;
}
- if (strnicmp(sb_mountdata+off, "ip=", 3) == 0) {
+ if (strnicmp(sb_mountdata + off, "ip=", 3) == 0) {
off += noff;
continue;
}
- if (strnicmp(sb_mountdata+off, "prefixpath=", 3) == 0) {
+ if (strnicmp(sb_mountdata + off, "prefixpath=", 11) == 0) {
off += noff;
continue;
}
- strncat(mountdata, sb_mountdata+off, noff);
+ strncat(mountdata, sb_mountdata + off, noff);
off += noff;
- }
- strcat(mountdata, sb_mountdata+off);
+ } while (tkn_e);
+ strcat(mountdata, sb_mountdata + off);
mountdata[md_len] = '\0';
/* copy new IP and ref share name */
- strcat(mountdata, ",ip=");
+ if (mountdata[strlen(mountdata) - 1] != sep)
+ strncat(mountdata, &sep, 1);
+ strcat(mountdata, "ip=");
strcat(mountdata, srvIP);
- strcat(mountdata, ",unc=");
+ strncat(mountdata, &sep, 1);
+ strcat(mountdata, "unc=");
strcat(mountdata, *devname);
/* find & copy prefixpath */
- tkn_e = strchr(ref_unc+2, '\\');
- if (tkn_e) {
- tkn_e = strchr(tkn_e+1, '\\');
- if (tkn_e) {
- strcat(mountdata, ",prefixpath=");
- strcat(mountdata, tkn_e+1);
- }
+ tkn_e = strchr(ref->node_name + 2, '\\');
+ if (tkn_e == NULL) /* invalid unc, missing share name*/
+ goto compose_mount_options_out;
+
+ fullpath = build_path_from_dentry(dentry);
+ tkn_e = strchr(tkn_e + 1, '\\');
+ if (tkn_e || strlen(fullpath) - (ref->path_consumed)) {
+ strncat(mountdata, &sep, 1);
+ strcat(mountdata, "prefixpath=");
+ if (tkn_e)
+ strcat(mountdata, tkn_e + 1);
+ strcat(mountdata, fullpath + (ref->path_consumed));
}
+ kfree(fullpath);
/*cFYI(1,("%s: parent mountdata: %s", __func__,sb_mountdata));*/
/*cFYI(1, ("%s: submount mountdata: %s", __func__, mountdata ));*/
@@ -198,7 +221,7 @@ compose_mount_options_out:
static struct vfsmount *cifs_dfs_do_refmount(const struct vfsmount *mnt_parent,
- struct dentry *dentry, char *ref_unc)
+ struct dentry *dentry, const struct dfs_info3_param *ref)
{
struct cifs_sb_info *cifs_sb;
struct vfsmount *mnt;
@@ -207,7 +230,7 @@ static struct vfsmount *cifs_dfs_do_refmount(const struct vfsmount *mnt_parent,
cifs_sb = CIFS_SB(dentry->d_inode->i_sb);
mountdata = compose_mount_options(cifs_sb->mountdata,
- ref_unc, &devname);
+ dentry, ref, &devname);
if (IS_ERR(mountdata))
return (struct vfsmount *)mountdata;
@@ -310,7 +333,7 @@ cifs_dfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd)
}
mnt = cifs_dfs_do_refmount(nd->path.mnt,
nd->path.dentry,
- referrals[i].node_name);
+ referrals + i);
cFYI(1, ("%s: cifs_dfs_do_refmount:%s , mnt:%p",
__func__,
referrals[i].node_name, mnt));
diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c
index fcee9298b62..0ab2fb5afef 100644
--- a/fs/cifs/cifs_spnego.c
+++ b/fs/cifs/cifs_spnego.c
@@ -73,8 +73,8 @@ struct key_type cifs_spnego_key_type = {
* strlen(";sec=ntlmsspi") */
#define MAX_MECH_STR_LEN 13
-/* max possible addr len eg FEDC:BA98:7654:3210:FEDC:BA98:7654:3210/60 */
-#define MAX_IPV6_ADDR_LEN 42
+/* max possible addr len eg FEDC:BA98:7654:3210:FEDC:BA98:7654:3210/128 */
+#define MAX_IPV6_ADDR_LEN 43
/* strlen of "host=" */
#define HOST_KEY_LEN 5
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 25ecbd5b040..d9cf467309e 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -275,9 +275,12 @@ static int cifs_permission(struct inode *inode, int mask)
cifs_sb = CIFS_SB(inode->i_sb);
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
- return 0;
- else /* file mode might have been restricted at mount time
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) {
+ if ((mask & MAY_EXEC) && !execute_ok(inode))
+ return -EACCES;
+ else
+ return 0;
+ } else /* file mode might have been restricted at mount time
on the client (above and beyond ACL on servers) for
servers which do not support setting and viewing mode bits,
so allowing client to check permissions is useful */
@@ -309,6 +312,7 @@ cifs_alloc_inode(struct super_block *sb)
file data or metadata */
cifs_inode->clientCanCacheRead = false;
cifs_inode->clientCanCacheAll = false;
+ cifs_inode->delete_pending = false;
cifs_inode->vfs_inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */
/* Can not set i_flags here - they get immediately overwritten
@@ -510,10 +514,11 @@ static void cifs_umount_begin(struct super_block *sb)
tcon = cifs_sb->tcon;
if (tcon == NULL)
return;
- down(&tcon->tconSem);
- if (atomic_read(&tcon->useCount) == 1)
+
+ read_lock(&cifs_tcp_ses_lock);
+ if (tcon->tc_count == 1)
tcon->tidStatus = CifsExiting;
- up(&tcon->tconSem);
+ read_unlock(&cifs_tcp_ses_lock);
/* cancel_brl_requests(tcon); */ /* BB mark all brl mids as exiting */
/* cancel_notify_requests(tcon); */
@@ -617,6 +622,37 @@ static loff_t cifs_llseek(struct file *file, loff_t offset, int origin)
return generic_file_llseek_unlocked(file, offset, origin);
}
+#ifdef CONFIG_CIFS_EXPERIMENTAL
+static int cifs_setlease(struct file *file, long arg, struct file_lock **lease)
+{
+ /* note that this is called by vfs setlease with the BKL held
+ although I doubt that BKL is needed here in cifs */
+ struct inode *inode = file->f_path.dentry->d_inode;
+
+ if (!(S_ISREG(inode->i_mode)))
+ return -EINVAL;
+
+ /* check if file is oplocked */
+ if (((arg == F_RDLCK) &&
+ (CIFS_I(inode)->clientCanCacheRead)) ||
+ ((arg == F_WRLCK) &&
+ (CIFS_I(inode)->clientCanCacheAll)))
+ return generic_setlease(file, arg, lease);
+ else if (CIFS_SB(inode->i_sb)->tcon->local_lease &&
+ !CIFS_I(inode)->clientCanCacheRead)
+ /* If the server claims to support oplock on this
+ file, then we still need to check oplock even
+ if the local_lease mount option is set, but there
+ are servers which do not support oplock for which
+ this mount option may be useful if the user
+ knows that the file won't be changed on the server
+ by anyone else */
+ return generic_setlease(file, arg, lease);
+ else
+ return -EAGAIN;
+}
+#endif
+
struct file_system_type cifs_fs_type = {
.owner = THIS_MODULE,
.name = "cifs",
@@ -695,6 +731,7 @@ const struct file_operations cifs_file_ops = {
#ifdef CONFIG_CIFS_EXPERIMENTAL
.dir_notify = cifs_dir_notify,
+ .setlease = cifs_setlease,
#endif /* CONFIG_CIFS_EXPERIMENTAL */
};
@@ -715,6 +752,7 @@ const struct file_operations cifs_file_direct_ops = {
.llseek = cifs_llseek,
#ifdef CONFIG_CIFS_EXPERIMENTAL
.dir_notify = cifs_dir_notify,
+ .setlease = cifs_setlease,
#endif /* CONFIG_CIFS_EXPERIMENTAL */
};
const struct file_operations cifs_file_nobrl_ops = {
@@ -735,6 +773,7 @@ const struct file_operations cifs_file_nobrl_ops = {
#ifdef CONFIG_CIFS_EXPERIMENTAL
.dir_notify = cifs_dir_notify,
+ .setlease = cifs_setlease,
#endif /* CONFIG_CIFS_EXPERIMENTAL */
};
@@ -754,6 +793,7 @@ const struct file_operations cifs_file_direct_nobrl_ops = {
.llseek = cifs_llseek,
#ifdef CONFIG_CIFS_EXPERIMENTAL
.dir_notify = cifs_dir_notify,
+ .setlease = cifs_setlease,
#endif /* CONFIG_CIFS_EXPERIMENTAL */
};
@@ -765,6 +805,7 @@ const struct file_operations cifs_dir_ops = {
.dir_notify = cifs_dir_notify,
#endif /* CONFIG_CIFS_EXPERIMENTAL */
.unlocked_ioctl = cifs_ioctl,
+ .llseek = generic_file_llseek,
};
static void
@@ -945,6 +986,12 @@ static int cifs_oplock_thread(void *dummyarg)
the call */
/* mutex_lock(&inode->i_mutex);*/
if (S_ISREG(inode->i_mode)) {
+#ifdef CONFIG_CIFS_EXPERIMENTAL
+ if (CIFS_I(inode)->clientCanCacheAll == 0)
+ break_lease(inode, FMODE_READ);
+ else if (CIFS_I(inode)->clientCanCacheRead == 0)
+ break_lease(inode, FMODE_WRITE);
+#endif
rc = filemap_fdatawrite(inode->i_mapping);
if (CIFS_I(inode)->clientCanCacheRead == 0) {
waitrc = filemap_fdatawait(
@@ -967,7 +1014,7 @@ static int cifs_oplock_thread(void *dummyarg)
not bother sending an oplock release if session
to server still is disconnected since oplock
already released by the server in that case */
- if (pTcon->tidStatus != CifsNeedReconnect) {
+ if (!pTcon->need_reconnect) {
rc = CIFSSMBLock(0, pTcon, netfid,
0 /* len */ , 0 /* offset */, 0,
0, LOCKING_ANDX_OPLOCK_RELEASE,
@@ -985,24 +1032,24 @@ static int cifs_oplock_thread(void *dummyarg)
static int cifs_dnotify_thread(void *dummyarg)
{
struct list_head *tmp;
- struct cifsSesInfo *ses;
+ struct TCP_Server_Info *server;
do {
if (try_to_freeze())
continue;
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(15*HZ);
- read_lock(&GlobalSMBSeslock);
/* check if any stuck requests that need
to be woken up and wakeq so the
thread can wake up and error out */
- list_for_each(tmp, &GlobalSMBSessionList) {
- ses = list_entry(tmp, struct cifsSesInfo,
- cifsSessionList);
- if (ses->server && atomic_read(&ses->server->inFlight))
- wake_up_all(&ses->server->response_q);
+ read_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp, &cifs_tcp_ses_list) {
+ server = list_entry(tmp, struct TCP_Server_Info,
+ tcp_ses_list);
+ if (atomic_read(&server->inFlight))
+ wake_up_all(&server->response_q);
}
- read_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
} while (!kthread_should_stop());
return 0;
@@ -1013,9 +1060,7 @@ init_cifs(void)
{
int rc = 0;
cifs_proc_init();
-/* INIT_LIST_HEAD(&GlobalServerList);*/ /* BB not implemented yet */
- INIT_LIST_HEAD(&GlobalSMBSessionList);
- INIT_LIST_HEAD(&GlobalTreeConnectionList);
+ INIT_LIST_HEAD(&cifs_tcp_ses_list);
INIT_LIST_HEAD(&GlobalOplock_Q);
#ifdef CONFIG_CIFS_EXPERIMENTAL
INIT_LIST_HEAD(&GlobalDnotifyReqList);
@@ -1043,6 +1088,7 @@ init_cifs(void)
GlobalMaxActiveXid = 0;
memset(Local_System_Name, 0, 15);
rwlock_init(&GlobalSMBSeslock);
+ rwlock_init(&cifs_tcp_ses_lock);
spin_lock_init(&GlobalMid_Lock);
if (cifs_max_pending < 2) {
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index f7b4a5cd837..074de0b5064 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -101,5 +101,5 @@ extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
extern const struct export_operations cifs_export_ops;
#endif /* EXPERIMENTAL */
-#define CIFS_VERSION "1.54"
+#define CIFS_VERSION "1.55"
#endif /* _CIFSFS_H */
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 0d22479d99b..c57c0565547 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -85,8 +85,7 @@ enum securityEnum {
};
enum protocolEnum {
- IPV4 = 0,
- IPV6,
+ TCP = 0,
SCTP
/* Netbios frames protocol not supported at this time */
};
@@ -122,6 +121,9 @@ struct cifs_cred {
*/
struct TCP_Server_Info {
+ struct list_head tcp_ses_list;
+ struct list_head smb_ses_list;
+ int srv_count; /* reference counter */
/* 15 character server name + 0x20 16th byte indicating type = srv */
char server_RFC1001_name[SERVER_NAME_LEN_WITH_NULL];
char unicode_server_Name[SERVER_NAME_LEN_WITH_NULL * 2];
@@ -141,7 +143,8 @@ struct TCP_Server_Info {
char versionMajor;
char versionMinor;
bool svlocal:1; /* local server or remote */
- atomic_t socketUseCount; /* number of open cifs sessions on socket */
+ bool noblocksnd; /* use blocking sendmsg */
+ bool noautotune; /* do not autotune send buf sizes */
atomic_t inFlight; /* number of requests on the wire to server */
#ifdef CONFIG_CIFS_STATS2
atomic_t inSend; /* requests trying to send */
@@ -192,13 +195,14 @@ struct cifsUidInfo {
* Session structure. One of these for each uid session with a particular host
*/
struct cifsSesInfo {
- struct list_head cifsSessionList;
+ struct list_head smb_ses_list;
+ struct list_head tcon_list;
struct semaphore sesSem;
#if 0
struct cifsUidInfo *uidInfo; /* pointer to user info */
#endif
struct TCP_Server_Info *server; /* pointer to server info */
- atomic_t inUse; /* # of mounts (tree connections) on this ses */
+ int ses_count; /* reference counter */
enum statusEnum status;
unsigned overrideSecFlg; /* if non-zero override global sec flags */
__u16 ipc_tid; /* special tid for connection to IPC share */
@@ -214,6 +218,7 @@ struct cifsSesInfo {
char userName[MAX_USERNAME_SIZE + 1];
char *domainName;
char *password;
+ bool need_reconnect:1; /* connection reset, uid now invalid */
};
/* no more than one of the following three session flags may be set */
#define CIFS_SES_NT4 1
@@ -228,16 +233,15 @@ struct cifsSesInfo {
* session
*/
struct cifsTconInfo {
- struct list_head cifsConnectionList;
+ struct list_head tcon_list;
+ int tc_count;
struct list_head openFileList;
- struct semaphore tconSem;
struct cifsSesInfo *ses; /* pointer to session associated with */
char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */
char *nativeFileSystem;
__u16 tid; /* The 2 byte tree id */
__u16 Flags; /* optional support bits */
enum statusEnum tidStatus;
- atomic_t useCount; /* how many explicit/implicit mounts to share */
#ifdef CONFIG_CIFS_STATS
atomic_t num_smbs_sent;
atomic_t num_writes;
@@ -285,6 +289,8 @@ struct cifsTconInfo {
bool seal:1; /* transport encryption for this mounted share */
bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol
for this mount even if server would support */
+ bool local_lease:1; /* check leases (only) on local system not remote */
+ bool need_reconnect:1; /* connection reset, tid now invalid */
/* BB add field for back pointer to sb struct(s)? */
};
@@ -353,6 +359,7 @@ struct cifsInodeInfo {
bool clientCanCacheRead:1; /* read oplock */
bool clientCanCacheAll:1; /* read and writebehind oplock */
bool oplockPending:1;
+ bool delete_pending:1; /* DELETE_ON_CLOSE is set */
struct inode vfs_inode;
};
@@ -584,22 +591,30 @@ require use of the stronger protocol */
#endif
/*
- * The list of servers that did not respond with NT LM 0.12.
- * This list helps improve performance and eliminate the messages indicating
- * that we had a communications error talking to the server in this list.
+ * the list of TCP_Server_Info structures, ie each of the sockets
+ * connecting our client to a distinct server (ip address), is
+ * chained together by cifs_tcp_ses_list. The list of all our SMB
+ * sessions (and from that the tree connections) can be found
+ * by iterating over cifs_tcp_ses_list
*/
-/* Feature not supported */
-/* GLOBAL_EXTERN struct servers_not_supported *NotSuppList; */
+GLOBAL_EXTERN struct list_head cifs_tcp_ses_list;
/*
- * The following is a hash table of all the users we know about.
+ * This lock protects the cifs_tcp_ses_list, the list of smb sessions per
+ * tcp session, and the list of tcon's per smb session. It also protects
+ * the reference counters for the server, smb session, and tcon. Finally,
+ * changes to the tcon->tidStatus should be done while holding this lock.
*/
-GLOBAL_EXTERN struct smbUidInfo *GlobalUidList[UID_HASH];
+GLOBAL_EXTERN rwlock_t cifs_tcp_ses_lock;
-/* GLOBAL_EXTERN struct list_head GlobalServerList; BB not implemented yet */
-GLOBAL_EXTERN struct list_head GlobalSMBSessionList;
-GLOBAL_EXTERN struct list_head GlobalTreeConnectionList;
-GLOBAL_EXTERN rwlock_t GlobalSMBSeslock; /* protects list inserts on 3 above */
+/*
+ * This lock protects the cifs_file->llist and cifs_file->flist
+ * list operations, and updates to some flags (cifs_file->invalidHandle)
+ * It will be moved to either use the tcon->stat_lock or equivalent later.
+ * If cifs_tcp_ses_lock and the lock below are both needed to be held, then
+ * the cifs_tcp_ses_lock must be grabbed first and released last.
+ */
+GLOBAL_EXTERN rwlock_t GlobalSMBSeslock;
GLOBAL_EXTERN struct list_head GlobalOplock_Q;
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 0cff7fe986e..6f21ecb85ce 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -36,7 +36,7 @@ extern void cifs_buf_release(void *);
extern struct smb_hdr *cifs_small_buf_get(void);
extern void cifs_small_buf_release(void *);
extern int smb_send(struct socket *, struct smb_hdr *,
- unsigned int /* length */ , struct sockaddr *);
+ unsigned int /* length */ , struct sockaddr *, bool);
extern unsigned int _GetXid(void);
extern void _FreeXid(unsigned int);
#define GetXid() (int)_GetXid(); cFYI(1,("CIFS VFS: in %s as Xid: %d with uid: %d",__func__, xid,current->fsuid));
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 6f4ffe15d68..2af8626ced4 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -190,10 +190,10 @@ small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
/* need to prevent multiple threads trying to
simultaneously reconnect the same SMB session */
down(&tcon->ses->sesSem);
- if (tcon->ses->status == CifsNeedReconnect)
+ if (tcon->ses->need_reconnect)
rc = cifs_setup_session(0, tcon->ses,
nls_codepage);
- if (!rc && (tcon->tidStatus == CifsNeedReconnect)) {
+ if (!rc && (tcon->need_reconnect)) {
mark_open_files_invalid(tcon);
rc = CIFSTCon(0, tcon->ses, tcon->treeName,
tcon, nls_codepage);
@@ -337,10 +337,10 @@ smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
/* need to prevent multiple threads trying to
simultaneously reconnect the same SMB session */
down(&tcon->ses->sesSem);
- if (tcon->ses->status == CifsNeedReconnect)
+ if (tcon->ses->need_reconnect)
rc = cifs_setup_session(0, tcon->ses,
nls_codepage);
- if (!rc && (tcon->tidStatus == CifsNeedReconnect)) {
+ if (!rc && (tcon->need_reconnect)) {
mark_open_files_invalid(tcon);
rc = CIFSTCon(0, tcon->ses, tcon->treeName,
tcon, nls_codepage);
@@ -664,8 +664,9 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
rc = -EIO;
goto neg_err_exit;
}
-
- if (server->socketUseCount.counter > 1) {
+ read_lock(&cifs_tcp_ses_lock);
+ if (server->srv_count > 1) {
+ read_unlock(&cifs_tcp_ses_lock);
if (memcmp(server->server_GUID,
pSMBr->u.extended_response.
GUID, 16) != 0) {
@@ -674,9 +675,11 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
pSMBr->u.extended_response.GUID,
16);
}
- } else
+ } else {
+ read_unlock(&cifs_tcp_ses_lock);
memcpy(server->server_GUID,
pSMBr->u.extended_response.GUID, 16);
+ }
if (count == 16) {
server->secType = RawNTLMSSP;
@@ -739,50 +742,31 @@ CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon)
int rc = 0;
cFYI(1, ("In tree disconnect"));
- /*
- * If last user of the connection and
- * connection alive - disconnect it
- * If this is the last connection on the server session disconnect it
- * (and inside session disconnect we should check if tcp socket needs
- * to be freed and kernel thread woken up).
- */
- if (tcon)
- down(&tcon->tconSem);
- else
- return -EIO;
- atomic_dec(&tcon->useCount);
- if (atomic_read(&tcon->useCount) > 0) {
- up(&tcon->tconSem);
- return -EBUSY;
- }
+ /* BB: do we need to check this? These should never be NULL. */
+ if ((tcon->ses == NULL) || (tcon->ses->server == NULL))
+ return -EIO;
- /* No need to return error on this operation if tid invalidated and
- closed on server already e.g. due to tcp session crashing */
- if (tcon->tidStatus == CifsNeedReconnect) {
- up(&tcon->tconSem);
+ /*
+ * No need to return error on this operation if tid invalidated and
+ * closed on server already e.g. due to tcp session crashing. Also,
+ * the tcon is no longer on the list, so no need to take lock before
+ * checking this.
+ */
+ if (tcon->need_reconnect)
return 0;
- }
- if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) {
- up(&tcon->tconSem);
- return -EIO;
- }
rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon,
(void **)&smb_buffer);
- if (rc) {
- up(&tcon->tconSem);
+ if (rc)
return rc;
- }
rc = SendReceiveNoRsp(xid, tcon->ses, smb_buffer, 0);
if (rc)
cFYI(1, ("Tree disconnect failed %d", rc));
- up(&tcon->tconSem);
-
/* No need to return error on this operation if tid invalidated and
- closed on server already e.g. due to tcp session crashing */
+ closed on server already e.g. due to tcp session crashing */
if (rc == -EAGAIN)
rc = 0;
@@ -796,43 +780,36 @@ CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses)
int rc = 0;
cFYI(1, ("In SMBLogoff for session disconnect"));
- if (ses)
- down(&ses->sesSem);
- else
+
+ /*
+ * BB: do we need to check validity of ses and server? They should
+ * always be valid since we have an active reference. If not, that
+ * should probably be a BUG()
+ */
+ if (!ses || !ses->server)
return -EIO;
- atomic_dec(&ses->inUse);
- if (atomic_read(&ses->inUse) > 0) {
- up(&ses->sesSem);
- return -EBUSY;
- }
+ down(&ses->sesSem);
+ if (ses->need_reconnect)
+ goto session_already_dead; /* no need to send SMBlogoff if uid
+ already closed due to reconnect */
rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB);
if (rc) {
up(&ses->sesSem);
return rc;
}
- if (ses->server) {
- pSMB->hdr.Mid = GetNextMid(ses->server);
+ pSMB->hdr.Mid = GetNextMid(ses->server);
- if (ses->server->secMode &
+ if (ses->server->secMode &
(SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
- }
pSMB->hdr.Uid = ses->Suid;
pSMB->AndXCommand = 0xFF;
rc = SendReceiveNoRsp(xid, ses, (struct smb_hdr *) pSMB, 0);
- if (ses->server) {
- atomic_dec(&ses->server->socketUseCount);
- if (atomic_read(&ses->server->socketUseCount) == 0) {
- spin_lock(&GlobalMid_Lock);
- ses->server->tcpStatus = CifsExiting;
- spin_unlock(&GlobalMid_Lock);
- rc = -ESHUTDOWN;
- }
- }
+session_already_dead:
up(&ses->sesSem);
/* if session dead then we do not need to do ulogoff,
@@ -1309,6 +1286,7 @@ OldOpenRetry:
cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile));
pfile_info->EndOfFile = pfile_info->AllocationSize;
pfile_info->NumberOfLinks = cpu_to_le32(1);
+ pfile_info->DeletePending = 0;
}
}
@@ -1410,6 +1388,7 @@ openRetry:
pfile_info->AllocationSize = pSMBr->AllocationSize;
pfile_info->EndOfFile = pSMBr->EndOfFile;
pfile_info->NumberOfLinks = cpu_to_le32(1);
+ pfile_info->DeletePending = 0;
}
}
@@ -1534,7 +1513,7 @@ CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
__u32 bytes_sent;
__u16 byte_count;
- /* cFYI(1,("write at %lld %d bytes",offset,count));*/
+ /* cFYI(1, ("write at %lld %d bytes", offset, count));*/
if (tcon->ses == NULL)
return -ECONNABORTED;
@@ -3920,6 +3899,27 @@ GetInodeNumOut:
return rc;
}
+/* computes length of UCS string converted to host codepage
+ * @src: UCS string
+ * @maxlen: length of the input string in UCS characters
+ * (not in bytes)
+ *
+ * return: size of input string in host codepage
+ */
+static int hostlen_fromUCS(const __le16 *src, const int maxlen,
+ const struct nls_table *nls_codepage) {
+ int i;
+ int hostlen = 0;
+ char to[4];
+ int charlen;
+ for (i = 0; (i < maxlen) && src[i]; ++i) {
+ charlen = nls_codepage->uni2char(le16_to_cpu(src[i]),
+ to, NLS_MAX_CHARSET_SIZE);
+ hostlen += charlen > 0 ? charlen : 1;
+ }
+ return hostlen;
+}
+
/* parses DFS refferal V3 structure
* caller is responsible for freeing target_nodes
* returns:
@@ -3930,7 +3930,8 @@ static int
parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr,
unsigned int *num_of_nodes,
struct dfs_info3_param **target_nodes,
- const struct nls_table *nls_codepage)
+ const struct nls_table *nls_codepage, int remap,
+ const char *searchName)
{
int i, rc = 0;
char *data_end;
@@ -3981,7 +3982,17 @@ parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr,
struct dfs_info3_param *node = (*target_nodes)+i;
node->flags = le16_to_cpu(pSMBr->DFSFlags);
- node->path_consumed = le16_to_cpu(pSMBr->PathConsumed);
+ if (is_unicode) {
+ __le16 *tmp = kmalloc(strlen(searchName)*2, GFP_KERNEL);
+ cifsConvertToUCS((__le16 *) tmp, searchName,
+ PATH_MAX, nls_codepage, remap);
+ node->path_consumed = hostlen_fromUCS(tmp,
+ le16_to_cpu(pSMBr->PathConsumed)/2,
+ nls_codepage);
+ kfree(tmp);
+ } else
+ node->path_consumed = le16_to_cpu(pSMBr->PathConsumed);
+
node->server_type = le16_to_cpu(ref->ServerType);
node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags);
@@ -4114,7 +4125,8 @@ getDFSRetry:
/* parse returned result into more usable form */
rc = parse_DFS_referrals(pSMBr, num_of_nodes,
- target_nodes, nls_codepage);
+ target_nodes, nls_codepage, remap,
+ searchName);
GetDFSRefExit:
cifs_buf_release(pSMB);
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 4c13bcdb92a..c7d34171458 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -90,6 +90,10 @@ struct smb_vol {
bool nocase:1; /* request case insensitive filenames */
bool nobrl:1; /* disable sending byte range locks to srv */
bool seal:1; /* request transport encryption on share */
+ bool nodfs:1; /* Do not request DFS, even if available */
+ bool local_lease:1; /* check leases only on local system, not remote */
+ bool noblocksnd:1;
+ bool noautotune:1;
unsigned int rsize;
unsigned int wsize;
unsigned int sockopt;
@@ -100,9 +104,11 @@ struct smb_vol {
static int ipv4_connect(struct sockaddr_in *psin_server,
struct socket **csocket,
char *netb_name,
- char *server_netb_name);
+ char *server_netb_name,
+ bool noblocksnd,
+ bool nosndbuf); /* ipv6 never set sndbuf size */
static int ipv6_connect(struct sockaddr_in6 *psin_server,
- struct socket **csocket);
+ struct socket **csocket, bool noblocksnd);
/*
@@ -118,13 +124,13 @@ static int
cifs_reconnect(struct TCP_Server_Info *server)
{
int rc = 0;
- struct list_head *tmp;
+ struct list_head *tmp, *tmp2;
struct cifsSesInfo *ses;
struct cifsTconInfo *tcon;
struct mid_q_entry *mid_entry;
spin_lock(&GlobalMid_Lock);
- if (kthread_should_stop()) {
+ if (server->tcpStatus == CifsExiting) {
/* the demux thread will exit normally
next time through the loop */
spin_unlock(&GlobalMid_Lock);
@@ -138,23 +144,17 @@ cifs_reconnect(struct TCP_Server_Info *server)
/* before reconnecting the tcp session, mark the smb session (uid)
and the tid bad so they are not used until reconnected */
- read_lock(&GlobalSMBSeslock);
- list_for_each(tmp, &GlobalSMBSessionList) {
- ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
- if (ses->server) {
- if (ses->server == server) {
- ses->status = CifsNeedReconnect;
- ses->ipc_tid = 0;
- }
+ read_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp, &server->smb_ses_list) {
+ ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list);
+ ses->need_reconnect = true;
+ ses->ipc_tid = 0;
+ list_for_each(tmp2, &ses->tcon_list) {
+ tcon = list_entry(tmp2, struct cifsTconInfo, tcon_list);
+ tcon->need_reconnect = true;
}
- /* else tcp and smb sessions need reconnection */
- }
- list_for_each(tmp, &GlobalTreeConnectionList) {
- tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
- if ((tcon->ses) && (tcon->ses->server == server))
- tcon->tidStatus = CifsNeedReconnect;
}
- read_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
/* do not want to be sending data on a socket we are freeing */
down(&server->tcpSem);
if (server->ssocket) {
@@ -184,16 +184,18 @@ cifs_reconnect(struct TCP_Server_Info *server)
spin_unlock(&GlobalMid_Lock);
up(&server->tcpSem);
- while ((!kthread_should_stop()) && (server->tcpStatus != CifsGood)) {
+ while ((server->tcpStatus != CifsExiting) &&
+ (server->tcpStatus != CifsGood)) {
try_to_freeze();
- if (server->protocolType == IPV6) {
+ if (server->addr.sockAddr6.sin6_family == AF_INET6) {
rc = ipv6_connect(&server->addr.sockAddr6,
- &server->ssocket);
+ &server->ssocket, server->noautotune);
} else {
rc = ipv4_connect(&server->addr.sockAddr,
&server->ssocket,
server->workstation_RFC1001_name,
- server->server_RFC1001_name);
+ server->server_RFC1001_name,
+ server->noblocksnd, server->noautotune);
}
if (rc) {
cFYI(1, ("reconnect error %d", rc));
@@ -201,7 +203,7 @@ cifs_reconnect(struct TCP_Server_Info *server)
} else {
atomic_inc(&tcpSesReconnectCount);
spin_lock(&GlobalMid_Lock);
- if (!kthread_should_stop())
+ if (server->tcpStatus != CifsExiting)
server->tcpStatus = CifsGood;
server->sequence_number = 0;
spin_unlock(&GlobalMid_Lock);
@@ -356,7 +358,7 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
GFP_KERNEL);
set_freezable();
- while (!kthread_should_stop()) {
+ while (server->tcpStatus != CifsExiting) {
if (try_to_freeze())
continue;
if (bigbuf == NULL) {
@@ -397,7 +399,7 @@ incomplete_rcv:
kernel_recvmsg(csocket, &smb_msg,
&iov, 1, pdu_length, 0 /* BB other flags? */);
- if (kthread_should_stop()) {
+ if (server->tcpStatus == CifsExiting) {
break;
} else if (server->tcpStatus == CifsNeedReconnect) {
cFYI(1, ("Reconnect after server stopped responding"));
@@ -409,9 +411,14 @@ incomplete_rcv:
msleep(1); /* minimum sleep to prevent looping
allowing socket to clear and app threads to set
tcpStatus CifsNeedReconnect if server hung */
- if (pdu_length < 4)
+ if (pdu_length < 4) {
+ iov.iov_base = (4 - pdu_length) +
+ (char *)smb_buffer;
+ iov.iov_len = pdu_length;
+ smb_msg.msg_control = NULL;
+ smb_msg.msg_controllen = 0;
goto incomplete_rcv;
- else
+ } else
continue;
} else if (length <= 0) {
if (server->tcpStatus == CifsNew) {
@@ -522,7 +529,7 @@ incomplete_rcv:
total_read += length) {
length = kernel_recvmsg(csocket, &smb_msg, &iov, 1,
pdu_length - total_read, 0);
- if (kthread_should_stop() ||
+ if ((server->tcpStatus == CifsExiting) ||
(length == -EINTR)) {
/* then will exit */
reconnect = 2;
@@ -646,19 +653,16 @@ multi_t2_fnd:
}
} /* end while !EXITING */
+ /* take it off the list, if it's not already */
+ write_lock(&cifs_tcp_ses_lock);
+ list_del_init(&server->tcp_ses_list);
+ write_unlock(&cifs_tcp_ses_lock);
+
spin_lock(&GlobalMid_Lock);
server->tcpStatus = CifsExiting;
spin_unlock(&GlobalMid_Lock);
wake_up_all(&server->response_q);
- /* don't exit until kthread_stop is called */
- set_current_state(TASK_UNINTERRUPTIBLE);
- while (!kthread_should_stop()) {
- schedule();
- set_current_state(TASK_UNINTERRUPTIBLE);
- }
- set_current_state(TASK_RUNNING);
-
/* check if we have blocked requests that need to free */
/* Note that cifs_max_pending is normally 50, but
can be set at module install time to as little as two */
@@ -686,29 +690,29 @@ multi_t2_fnd:
if (smallbuf) /* no sense logging a debug message if NULL */
cifs_small_buf_release(smallbuf);
- read_lock(&GlobalSMBSeslock);
+ /*
+ * BB: we shouldn't have to do any of this. It shouldn't be
+ * possible to exit from the thread with active SMB sessions
+ */
+ read_lock(&cifs_tcp_ses_lock);
if (list_empty(&server->pending_mid_q)) {
/* loop through server session structures attached to this and
mark them dead */
- list_for_each(tmp, &GlobalSMBSessionList) {
- ses =
- list_entry(tmp, struct cifsSesInfo,
- cifsSessionList);
- if (ses->server == server) {
- ses->status = CifsExiting;
- ses->server = NULL;
- }
+ list_for_each(tmp, &server->smb_ses_list) {
+ ses = list_entry(tmp, struct cifsSesInfo,
+ smb_ses_list);
+ ses->status = CifsExiting;
+ ses->server = NULL;
}
- read_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
} else {
/* although we can not zero the server struct pointer yet,
since there are active requests which may depnd on them,
mark the corresponding SMB sessions as exiting too */
- list_for_each(tmp, &GlobalSMBSessionList) {
+ list_for_each(tmp, &server->smb_ses_list) {
ses = list_entry(tmp, struct cifsSesInfo,
- cifsSessionList);
- if (ses->server == server)
- ses->status = CifsExiting;
+ smb_ses_list);
+ ses->status = CifsExiting;
}
spin_lock(&GlobalMid_Lock);
@@ -723,7 +727,7 @@ multi_t2_fnd:
}
}
spin_unlock(&GlobalMid_Lock);
- read_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
/* 1/8th of sec is more than enough time for them to exit */
msleep(125);
}
@@ -745,16 +749,16 @@ multi_t2_fnd:
if there are any pointing to this (e.g
if a crazy root user tried to kill cifsd
kernel thread explicitly this might happen) */
- write_lock(&GlobalSMBSeslock);
- list_for_each(tmp, &GlobalSMBSessionList) {
- ses = list_entry(tmp, struct cifsSesInfo,
- cifsSessionList);
- if (ses->server == server)
- ses->server = NULL;
+ /* BB: This shouldn't be necessary, see above */
+ read_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp, &server->smb_ses_list) {
+ ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list);
+ ses->server = NULL;
}
- write_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
kfree(server->hostname);
+ task_to_wake = xchg(&server->tsk, NULL);
kfree(server);
length = atomic_dec_return(&tcpSesAllocCount);
@@ -762,6 +766,16 @@ multi_t2_fnd:
mempool_resize(cifs_req_poolp, length + cifs_min_rcv,
GFP_KERNEL);
+ /* if server->tsk was NULL then wait for a signal before exiting */
+ if (!task_to_wake) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ while (!signal_pending(current)) {
+ schedule();
+ set_current_state(TASK_INTERRUPTIBLE);
+ }
+ set_current_state(TASK_RUNNING);
+ }
+
return 0;
}
@@ -1186,6 +1200,10 @@ cifs_parse_mount_options(char *options, const char *devname,
/* ignore */
} else if (strnicmp(data, "rw", 2) == 0) {
vol->rw = true;
+ } else if (strnicmp(data, "noblocksend", 11) == 0) {
+ vol->noblocksnd = 1;
+ } else if (strnicmp(data, "noautotune", 10) == 0) {
+ vol->noautotune = 1;
} else if ((strnicmp(data, "suid", 4) == 0) ||
(strnicmp(data, "nosuid", 6) == 0) ||
(strnicmp(data, "exec", 4) == 0) ||
@@ -1218,6 +1236,8 @@ cifs_parse_mount_options(char *options, const char *devname,
vol->sfu_emul = 1;
} else if (strnicmp(data, "nosfu", 5) == 0) {
vol->sfu_emul = 0;
+ } else if (strnicmp(data, "nodfs", 5) == 0) {
+ vol->nodfs = 1;
} else if (strnicmp(data, "posixpaths", 10) == 0) {
vol->posix_paths = 1;
} else if (strnicmp(data, "noposixpaths", 12) == 0) {
@@ -1268,6 +1288,10 @@ cifs_parse_mount_options(char *options, const char *devname,
vol->no_psx_acl = 0;
} else if (strnicmp(data, "noacl", 5) == 0) {
vol->no_psx_acl = 1;
+#ifdef CONFIG_CIFS_EXPERIMENTAL
+ } else if (strnicmp(data, "locallease", 6) == 0) {
+ vol->local_lease = 1;
+#endif
} else if (strnicmp(data, "sign", 4) == 0) {
vol->secFlg |= CIFSSEC_MUST_SIGN;
} else if (strnicmp(data, "seal", 4) == 0) {
@@ -1331,94 +1355,158 @@ cifs_parse_mount_options(char *options, const char *devname,
return 0;
}
-static struct cifsSesInfo *
-cifs_find_tcp_session(struct in_addr *target_ip_addr,
- struct in6_addr *target_ip6_addr,
- char *userName, struct TCP_Server_Info **psrvTcp)
+static struct TCP_Server_Info *
+cifs_find_tcp_session(struct sockaddr *addr)
{
struct list_head *tmp;
- struct cifsSesInfo *ses;
-
- *psrvTcp = NULL;
+ struct TCP_Server_Info *server;
+ struct sockaddr_in *addr4 = (struct sockaddr_in *) addr;
+ struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) addr;
+
+ write_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp, &cifs_tcp_ses_list) {
+ server = list_entry(tmp, struct TCP_Server_Info,
+ tcp_ses_list);
+ /*
+ * the demux thread can exit on its own while still in CifsNew
+ * so don't accept any sockets in that state. Since the
+ * tcpStatus never changes back to CifsNew it's safe to check
+ * for this without a lock.
+ */
+ if (server->tcpStatus == CifsNew)
+ continue;
- read_lock(&GlobalSMBSeslock);
- list_for_each(tmp, &GlobalSMBSessionList) {
- ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
- if (!ses->server)
+ if (addr->sa_family == AF_INET &&
+ (addr4->sin_addr.s_addr !=
+ server->addr.sockAddr.sin_addr.s_addr))
+ continue;
+ else if (addr->sa_family == AF_INET6 &&
+ memcmp(&server->addr.sockAddr6.sin6_addr,
+ &addr6->sin6_addr, sizeof(addr6->sin6_addr)))
continue;
- if (target_ip_addr &&
- ses->server->addr.sockAddr.sin_addr.s_addr != target_ip_addr->s_addr)
- continue;
- else if (target_ip6_addr &&
- memcmp(&ses->server->addr.sockAddr6.sin6_addr,
- target_ip6_addr, sizeof(*target_ip6_addr)))
- continue;
- /* BB lock server and tcp session; increment use count here?? */
+ ++server->srv_count;
+ write_unlock(&cifs_tcp_ses_lock);
+ cFYI(1, ("Existing tcp session with server found"));
+ return server;
+ }
+ write_unlock(&cifs_tcp_ses_lock);
+ return NULL;
+}
- /* found a match on the TCP session */
- *psrvTcp = ses->server;
+static void
+cifs_put_tcp_session(struct TCP_Server_Info *server)
+{
+ struct task_struct *task;
- /* BB check if reconnection needed */
- if (strncmp(ses->userName, userName, MAX_USERNAME_SIZE) == 0) {
- read_unlock(&GlobalSMBSeslock);
- /* Found exact match on both TCP and
- SMB sessions */
- return ses;
- }
- /* else tcp and smb sessions need reconnection */
+ write_lock(&cifs_tcp_ses_lock);
+ if (--server->srv_count > 0) {
+ write_unlock(&cifs_tcp_ses_lock);
+ return;
}
- read_unlock(&GlobalSMBSeslock);
- return NULL;
+ list_del_init(&server->tcp_ses_list);
+ write_unlock(&cifs_tcp_ses_lock);
+
+ spin_lock(&GlobalMid_Lock);
+ server->tcpStatus = CifsExiting;
+ spin_unlock(&GlobalMid_Lock);
+
+ task = xchg(&server->tsk, NULL);
+ if (task)
+ force_sig(SIGKILL, task);
}
-static struct cifsTconInfo *
-find_unc(__be32 new_target_ip_addr, char *uncName, char *userName)
+static struct cifsSesInfo *
+cifs_find_smb_ses(struct TCP_Server_Info *server, char *username)
{
struct list_head *tmp;
- struct cifsTconInfo *tcon;
- __be32 old_ip;
-
- read_lock(&GlobalSMBSeslock);
+ struct cifsSesInfo *ses;
- list_for_each(tmp, &GlobalTreeConnectionList) {
- cFYI(1, ("Next tcon"));
- tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
- if (!tcon->ses || !tcon->ses->server)
+ write_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp, &server->smb_ses_list) {
+ ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list);
+ if (strncmp(ses->userName, username, MAX_USERNAME_SIZE))
continue;
- old_ip = tcon->ses->server->addr.sockAddr.sin_addr.s_addr;
- cFYI(1, ("old ip addr: %x == new ip %x ?",
- old_ip, new_target_ip_addr));
+ ++ses->ses_count;
+ write_unlock(&cifs_tcp_ses_lock);
+ return ses;
+ }
+ write_unlock(&cifs_tcp_ses_lock);
+ return NULL;
+}
- if (old_ip != new_target_ip_addr)
- continue;
+static void
+cifs_put_smb_ses(struct cifsSesInfo *ses)
+{
+ int xid;
+ struct TCP_Server_Info *server = ses->server;
- /* BB lock tcon, server, tcp session and increment use count? */
- /* found a match on the TCP session */
- /* BB check if reconnection needed */
- cFYI(1, ("IP match, old UNC: %s new: %s",
- tcon->treeName, uncName));
+ write_lock(&cifs_tcp_ses_lock);
+ if (--ses->ses_count > 0) {
+ write_unlock(&cifs_tcp_ses_lock);
+ return;
+ }
- if (strncmp(tcon->treeName, uncName, MAX_TREE_SIZE))
- continue;
+ list_del_init(&ses->smb_ses_list);
+ write_unlock(&cifs_tcp_ses_lock);
- cFYI(1, ("and old usr: %s new: %s",
- tcon->treeName, uncName));
+ if (ses->status == CifsGood) {
+ xid = GetXid();
+ CIFSSMBLogoff(xid, ses);
+ _FreeXid(xid);
+ }
+ sesInfoFree(ses);
+ cifs_put_tcp_session(server);
+}
- if (strncmp(tcon->ses->userName, userName, MAX_USERNAME_SIZE))
+static struct cifsTconInfo *
+cifs_find_tcon(struct cifsSesInfo *ses, const char *unc)
+{
+ struct list_head *tmp;
+ struct cifsTconInfo *tcon;
+
+ write_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp, &ses->tcon_list) {
+ tcon = list_entry(tmp, struct cifsTconInfo, tcon_list);
+ if (tcon->tidStatus == CifsExiting)
+ continue;
+ if (strncmp(tcon->treeName, unc, MAX_TREE_SIZE))
continue;
- /* matched smb session (user name) */
- read_unlock(&GlobalSMBSeslock);
+ ++tcon->tc_count;
+ write_unlock(&cifs_tcp_ses_lock);
return tcon;
}
-
- read_unlock(&GlobalSMBSeslock);
+ write_unlock(&cifs_tcp_ses_lock);
return NULL;
}
+static void
+cifs_put_tcon(struct cifsTconInfo *tcon)
+{
+ int xid;
+ struct cifsSesInfo *ses = tcon->ses;
+
+ write_lock(&cifs_tcp_ses_lock);
+ if (--tcon->tc_count > 0) {
+ write_unlock(&cifs_tcp_ses_lock);
+ return;
+ }
+
+ list_del_init(&tcon->tcon_list);
+ write_unlock(&cifs_tcp_ses_lock);
+
+ xid = GetXid();
+ CIFSSMBTDis(xid, tcon);
+ _FreeXid(xid);
+
+ DeleteTconOplockQEntries(tcon);
+ tconInfoFree(tcon);
+ cifs_put_smb_ses(ses);
+}
+
int
get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path,
const struct nls_table *nls_codepage, unsigned int *pnum_referrals,
@@ -1506,7 +1594,8 @@ static void rfc1002mangle(char *target, char *source, unsigned int length)
static int
ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
- char *netbios_name, char *target_name)
+ char *netbios_name, char *target_name,
+ bool noblocksnd, bool noautotune)
{
int rc = 0;
int connected = 0;
@@ -1578,11 +1667,16 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
(*csocket)->sk->sk_sndbuf,
(*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo));
(*csocket)->sk->sk_rcvtimeo = 7 * HZ;
+ if (!noblocksnd)
+ (*csocket)->sk->sk_sndtimeo = 3 * HZ;
+
/* make the bufsizes depend on wsize/rsize and max requests */
- if ((*csocket)->sk->sk_sndbuf < (200 * 1024))
- (*csocket)->sk->sk_sndbuf = 200 * 1024;
- if ((*csocket)->sk->sk_rcvbuf < (140 * 1024))
- (*csocket)->sk->sk_rcvbuf = 140 * 1024;
+ if (noautotune) {
+ if ((*csocket)->sk->sk_sndbuf < (200 * 1024))
+ (*csocket)->sk->sk_sndbuf = 200 * 1024;
+ if ((*csocket)->sk->sk_rcvbuf < (140 * 1024))
+ (*csocket)->sk->sk_rcvbuf = 140 * 1024;
+ }
/* send RFC1001 sessinit */
if (psin_server->sin_port == htons(RFC1001_PORT)) {
@@ -1619,7 +1713,7 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
/* sizeof RFC1002_SESSION_REQUEST with no scope */
smb_buf->smb_buf_length = 0x81000044;
rc = smb_send(*csocket, smb_buf, 0x44,
- (struct sockaddr *)psin_server);
+ (struct sockaddr *)psin_server, noblocksnd);
kfree(ses_init_buf);
msleep(1); /* RFC1001 layer in at least one server
requires very short break before negprot
@@ -1639,7 +1733,8 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
}
static int
-ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket)
+ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket,
+ bool noblocksnd)
{
int rc = 0;
int connected = 0;
@@ -1708,6 +1803,9 @@ ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket)
the default. sock_setsockopt not used because it expects
user space buffer */
(*csocket)->sk->sk_rcvtimeo = 7 * HZ;
+ if (!noblocksnd)
+ (*csocket)->sk->sk_sndtimeo = 3 * HZ;
+
return rc;
}
@@ -1845,19 +1943,104 @@ convert_delimiter(char *path, char delim)
}
}
+static void setup_cifs_sb(struct smb_vol *pvolume_info,
+ struct cifs_sb_info *cifs_sb)
+{
+ if (pvolume_info->rsize > CIFSMaxBufSize) {
+ cERROR(1, ("rsize %d too large, using MaxBufSize",
+ pvolume_info->rsize));
+ cifs_sb->rsize = CIFSMaxBufSize;
+ } else if ((pvolume_info->rsize) &&
+ (pvolume_info->rsize <= CIFSMaxBufSize))
+ cifs_sb->rsize = pvolume_info->rsize;
+ else /* default */
+ cifs_sb->rsize = CIFSMaxBufSize;
+
+ if (pvolume_info->wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) {
+ cERROR(1, ("wsize %d too large, using 4096 instead",
+ pvolume_info->wsize));
+ cifs_sb->wsize = 4096;
+ } else if (pvolume_info->wsize)
+ cifs_sb->wsize = pvolume_info->wsize;
+ else
+ cifs_sb->wsize = min_t(const int,
+ PAGEVEC_SIZE * PAGE_CACHE_SIZE,
+ 127*1024);
+ /* old default of CIFSMaxBufSize was too small now
+ that SMB Write2 can send multiple pages in kvec.
+ RFC1001 does not describe what happens when frame
+ bigger than 128K is sent so use that as max in
+ conjunction with 52K kvec constraint on arch with 4K
+ page size */
+
+ if (cifs_sb->rsize < 2048) {
+ cifs_sb->rsize = 2048;
+ /* Windows ME may prefer this */
+ cFYI(1, ("readsize set to minimum: 2048"));
+ }
+ /* calculate prepath */
+ cifs_sb->prepath = pvolume_info->prepath;
+ if (cifs_sb->prepath) {
+ cifs_sb->prepathlen = strlen(cifs_sb->prepath);
+ /* we can not convert the / to \ in the path
+ separators in the prefixpath yet because we do not
+ know (until reset_cifs_unix_caps is called later)
+ whether POSIX PATH CAP is available. We normalize
+ the / to \ after reset_cifs_unix_caps is called */
+ pvolume_info->prepath = NULL;
+ } else
+ cifs_sb->prepathlen = 0;
+ cifs_sb->mnt_uid = pvolume_info->linux_uid;
+ cifs_sb->mnt_gid = pvolume_info->linux_gid;
+ cifs_sb->mnt_file_mode = pvolume_info->file_mode;
+ cifs_sb->mnt_dir_mode = pvolume_info->dir_mode;
+ cFYI(1, ("file mode: 0x%x dir mode: 0x%x",
+ cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode));
+
+ if (pvolume_info->noperm)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM;
+ if (pvolume_info->setuids)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID;
+ if (pvolume_info->server_ino)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM;
+ if (pvolume_info->remap)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR;
+ if (pvolume_info->no_xattr)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR;
+ if (pvolume_info->sfu_emul)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL;
+ if (pvolume_info->nobrl)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL;
+ if (pvolume_info->cifs_acl)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL;
+ if (pvolume_info->override_uid)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID;
+ if (pvolume_info->override_gid)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID;
+ if (pvolume_info->dynperm)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM;
+ if (pvolume_info->direct_io) {
+ cFYI(1, ("mounting share using direct i/o"));
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO;
+ }
+
+ if ((pvolume_info->cifs_acl) && (pvolume_info->dynperm))
+ cERROR(1, ("mount option dynperm ignored if cifsacl "
+ "mount option supported"));
+}
+
int
cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
char *mount_data, const char *devname)
{
int rc = 0;
int xid;
- int address_type = AF_INET;
struct socket *csocket = NULL;
- struct sockaddr_in sin_server;
- struct sockaddr_in6 sin_server6;
+ struct sockaddr addr;
+ struct sockaddr_in *sin_server = (struct sockaddr_in *) &addr;
+ struct sockaddr_in6 *sin_server6 = (struct sockaddr_in6 *) &addr;
struct smb_vol volume_info;
struct cifsSesInfo *pSesInfo = NULL;
- struct cifsSesInfo *existingCifsSes = NULL;
struct cifsTconInfo *tcon = NULL;
struct TCP_Server_Info *srvTcp = NULL;
@@ -1865,6 +2048,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
/* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */
+ memset(&addr, 0, sizeof(struct sockaddr));
memset(&volume_info, 0, sizeof(struct smb_vol));
if (cifs_parse_mount_options(mount_data, devname, &volume_info)) {
rc = -EINVAL;
@@ -1887,16 +2071,16 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
if (volume_info.UNCip && volume_info.UNC) {
rc = cifs_inet_pton(AF_INET, volume_info.UNCip,
- &sin_server.sin_addr.s_addr);
+ &sin_server->sin_addr.s_addr);
if (rc <= 0) {
/* not ipv4 address, try ipv6 */
rc = cifs_inet_pton(AF_INET6, volume_info.UNCip,
- &sin_server6.sin6_addr.in6_u);
+ &sin_server6->sin6_addr.in6_u);
if (rc > 0)
- address_type = AF_INET6;
+ addr.sa_family = AF_INET6;
} else {
- address_type = AF_INET;
+ addr.sa_family = AF_INET;
}
if (rc <= 0) {
@@ -1936,38 +2120,25 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
}
}
- if (address_type == AF_INET)
- existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr,
- NULL /* no ipv6 addr */,
- volume_info.username, &srvTcp);
- else if (address_type == AF_INET6) {
- cFYI(1, ("looking for ipv6 address"));
- existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */,
- &sin_server6.sin6_addr,
- volume_info.username, &srvTcp);
- } else {
- rc = -EINVAL;
- goto out;
- }
-
- if (srvTcp) {
- cFYI(1, ("Existing tcp session with server found"));
- } else { /* create socket */
- if (volume_info.port)
- sin_server.sin_port = htons(volume_info.port);
- else
- sin_server.sin_port = 0;
- if (address_type == AF_INET6) {
+ srvTcp = cifs_find_tcp_session(&addr);
+ if (!srvTcp) { /* create socket */
+ if (addr.sa_family == AF_INET6) {
cFYI(1, ("attempting ipv6 connect"));
/* BB should we allow ipv6 on port 139? */
/* other OS never observed in Wild doing 139 with v6 */
- rc = ipv6_connect(&sin_server6, &csocket);
- } else
- rc = ipv4_connect(&sin_server, &csocket,
+ sin_server6->sin6_port = htons(volume_info.port);
+ rc = ipv6_connect(sin_server6, &csocket,
+ volume_info.noblocksnd);
+ } else {
+ sin_server->sin_port = htons(volume_info.port);
+ rc = ipv4_connect(sin_server, &csocket,
volume_info.source_rfc1001_name,
- volume_info.target_rfc1001_name);
+ volume_info.target_rfc1001_name,
+ volume_info.noblocksnd,
+ volume_info.noautotune);
+ }
if (rc < 0) {
- cERROR(1, ("Error connecting to IPv4 socket. "
+ cERROR(1, ("Error connecting to socket. "
"Aborting operation"));
if (csocket != NULL)
sock_release(csocket);
@@ -1980,12 +2151,17 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
sock_release(csocket);
goto out;
} else {
- memcpy(&srvTcp->addr.sockAddr, &sin_server,
- sizeof(struct sockaddr_in));
+ srvTcp->noblocksnd = volume_info.noblocksnd;
+ srvTcp->noautotune = volume_info.noautotune;
+ if (addr.sa_family == AF_INET6)
+ memcpy(&srvTcp->addr.sockAddr6, sin_server6,
+ sizeof(struct sockaddr_in6));
+ else
+ memcpy(&srvTcp->addr.sockAddr, sin_server,
+ sizeof(struct sockaddr_in));
atomic_set(&srvTcp->inFlight, 0);
/* BB Add code for ipv6 case too */
srvTcp->ssocket = csocket;
- srvTcp->protocolType = IPV4;
srvTcp->hostname = extract_hostname(volume_info.UNC);
if (IS_ERR(srvTcp->hostname)) {
rc = PTR_ERR(srvTcp->hostname);
@@ -2015,15 +2191,28 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
memcpy(srvTcp->server_RFC1001_name,
volume_info.target_rfc1001_name, 16);
srvTcp->sequence_number = 0;
+ INIT_LIST_HEAD(&srvTcp->tcp_ses_list);
+ INIT_LIST_HEAD(&srvTcp->smb_ses_list);
+ ++srvTcp->srv_count;
+ write_lock(&cifs_tcp_ses_lock);
+ list_add(&srvTcp->tcp_ses_list,
+ &cifs_tcp_ses_list);
+ write_unlock(&cifs_tcp_ses_lock);
}
}
- if (existingCifsSes) {
- pSesInfo = existingCifsSes;
+ pSesInfo = cifs_find_smb_ses(srvTcp, volume_info.username);
+ if (pSesInfo) {
cFYI(1, ("Existing smb sess found (status=%d)",
pSesInfo->status));
+ /*
+ * The existing SMB session already has a reference to srvTcp,
+ * so we can put back the extra one we got before
+ */
+ cifs_put_tcp_session(srvTcp);
+
down(&pSesInfo->sesSem);
- if (pSesInfo->status == CifsNeedReconnect) {
+ if (pSesInfo->need_reconnect) {
cFYI(1, ("Session needs reconnect"));
rc = cifs_setup_session(xid, pSesInfo,
cifs_sb->local_nls);
@@ -2032,180 +2221,101 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
} else if (!rc) {
cFYI(1, ("Existing smb sess not found"));
pSesInfo = sesInfoAlloc();
- if (pSesInfo == NULL)
+ if (pSesInfo == NULL) {
rc = -ENOMEM;
- else {
- pSesInfo->server = srvTcp;
- sprintf(pSesInfo->serverName, "%u.%u.%u.%u",
- NIPQUAD(sin_server.sin_addr.s_addr));
- }
+ goto mount_fail_check;
+ }
+
+ /* new SMB session uses our srvTcp ref */
+ pSesInfo->server = srvTcp;
+ sprintf(pSesInfo->serverName, "%u.%u.%u.%u",
+ NIPQUAD(sin_server->sin_addr.s_addr));
+
+ write_lock(&cifs_tcp_ses_lock);
+ list_add(&pSesInfo->smb_ses_list, &srvTcp->smb_ses_list);
+ write_unlock(&cifs_tcp_ses_lock);
+
+ /* volume_info.password freed at unmount */
+ if (volume_info.password) {
+ pSesInfo->password = volume_info.password;
+ /* set to NULL to prevent freeing on exit */
+ volume_info.password = NULL;
+ }
+ if (volume_info.username)
+ strncpy(pSesInfo->userName, volume_info.username,
+ MAX_USERNAME_SIZE);
+ if (volume_info.domainname) {
+ int len = strlen(volume_info.domainname);
+ pSesInfo->domainName = kmalloc(len + 1, GFP_KERNEL);
+ if (pSesInfo->domainName)
+ strcpy(pSesInfo->domainName,
+ volume_info.domainname);
+ }
+ pSesInfo->linux_uid = volume_info.linux_uid;
+ pSesInfo->overrideSecFlg = volume_info.secFlg;
+ down(&pSesInfo->sesSem);
- if (!rc) {
- /* volume_info.password freed at unmount */
- if (volume_info.password) {
- pSesInfo->password = volume_info.password;
- /* set to NULL to prevent freeing on exit */
- volume_info.password = NULL;
- }
- if (volume_info.username)
- strncpy(pSesInfo->userName,
- volume_info.username,
- MAX_USERNAME_SIZE);
- if (volume_info.domainname) {
- int len = strlen(volume_info.domainname);
- pSesInfo->domainName =
- kmalloc(len + 1, GFP_KERNEL);
- if (pSesInfo->domainName)
- strcpy(pSesInfo->domainName,
- volume_info.domainname);
- }
- pSesInfo->linux_uid = volume_info.linux_uid;
- pSesInfo->overrideSecFlg = volume_info.secFlg;
- down(&pSesInfo->sesSem);
- /* BB FIXME need to pass vol->secFlgs BB */
- rc = cifs_setup_session(xid, pSesInfo,
- cifs_sb->local_nls);
- up(&pSesInfo->sesSem);
- if (!rc)
- atomic_inc(&srvTcp->socketUseCount);
- }
+ /* BB FIXME need to pass vol->secFlgs BB */
+ rc = cifs_setup_session(xid, pSesInfo,
+ cifs_sb->local_nls);
+ up(&pSesInfo->sesSem);
}
/* search for existing tcon to this server share */
if (!rc) {
- if (volume_info.rsize > CIFSMaxBufSize) {
- cERROR(1, ("rsize %d too large, using MaxBufSize",
- volume_info.rsize));
- cifs_sb->rsize = CIFSMaxBufSize;
- } else if ((volume_info.rsize) &&
- (volume_info.rsize <= CIFSMaxBufSize))
- cifs_sb->rsize = volume_info.rsize;
- else /* default */
- cifs_sb->rsize = CIFSMaxBufSize;
-
- if (volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) {
- cERROR(1, ("wsize %d too large, using 4096 instead",
- volume_info.wsize));
- cifs_sb->wsize = 4096;
- } else if (volume_info.wsize)
- cifs_sb->wsize = volume_info.wsize;
- else
- cifs_sb->wsize =
- min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE,
- 127*1024);
- /* old default of CIFSMaxBufSize was too small now
- that SMB Write2 can send multiple pages in kvec.
- RFC1001 does not describe what happens when frame
- bigger than 128K is sent so use that as max in
- conjunction with 52K kvec constraint on arch with 4K
- page size */
-
- if (cifs_sb->rsize < 2048) {
- cifs_sb->rsize = 2048;
- /* Windows ME may prefer this */
- cFYI(1, ("readsize set to minimum: 2048"));
- }
- /* calculate prepath */
- cifs_sb->prepath = volume_info.prepath;
- if (cifs_sb->prepath) {
- cifs_sb->prepathlen = strlen(cifs_sb->prepath);
- /* we can not convert the / to \ in the path
- separators in the prefixpath yet because we do not
- know (until reset_cifs_unix_caps is called later)
- whether POSIX PATH CAP is available. We normalize
- the / to \ after reset_cifs_unix_caps is called */
- volume_info.prepath = NULL;
- } else
- cifs_sb->prepathlen = 0;
- cifs_sb->mnt_uid = volume_info.linux_uid;
- cifs_sb->mnt_gid = volume_info.linux_gid;
- cifs_sb->mnt_file_mode = volume_info.file_mode;
- cifs_sb->mnt_dir_mode = volume_info.dir_mode;
- cFYI(1, ("file mode: 0x%x dir mode: 0x%x",
- cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode));
-
- if (volume_info.noperm)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM;
- if (volume_info.setuids)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID;
- if (volume_info.server_ino)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM;
- if (volume_info.remap)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR;
- if (volume_info.no_xattr)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR;
- if (volume_info.sfu_emul)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL;
- if (volume_info.nobrl)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL;
- if (volume_info.cifs_acl)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL;
- if (volume_info.override_uid)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID;
- if (volume_info.override_gid)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID;
- if (volume_info.dynperm)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM;
- if (volume_info.direct_io) {
- cFYI(1, ("mounting share using direct i/o"));
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO;
- }
-
- if ((volume_info.cifs_acl) && (volume_info.dynperm))
- cERROR(1, ("mount option dynperm ignored if cifsacl "
- "mount option supported"));
+ setup_cifs_sb(&volume_info, cifs_sb);
- tcon =
- find_unc(sin_server.sin_addr.s_addr, volume_info.UNC,
- volume_info.username);
+ tcon = cifs_find_tcon(pSesInfo, volume_info.UNC);
if (tcon) {
cFYI(1, ("Found match on UNC path"));
- /* we can have only one retry value for a connection
- to a share so for resources mounted more than once
- to the same server share the last value passed in
- for the retry flag is used */
- tcon->retry = volume_info.retry;
- tcon->nocase = volume_info.nocase;
+ /* existing tcon already has a reference */
+ cifs_put_smb_ses(pSesInfo);
if (tcon->seal != volume_info.seal)
cERROR(1, ("transport encryption setting "
"conflicts with existing tid"));
} else {
tcon = tconInfoAlloc();
- if (tcon == NULL)
+ if (tcon == NULL) {
rc = -ENOMEM;
- else {
- /* check for null share name ie connecting to
- * dfs root */
-
- /* BB check if this works for exactly length
- * three strings */
- if ((strchr(volume_info.UNC + 3, '\\') == NULL)
- && (strchr(volume_info.UNC + 3, '/') ==
- NULL)) {
-/* rc = connect_to_dfs_path(xid, pSesInfo,
- "", cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);*/
- cFYI(1, ("DFS root not supported"));
- rc = -ENODEV;
- goto out;
- } else {
- /* BB Do we need to wrap sesSem around
- * this TCon call and Unix SetFS as
- * we do on SessSetup and reconnect? */
- rc = CIFSTCon(xid, pSesInfo,
- volume_info.UNC,
- tcon, cifs_sb->local_nls);
- cFYI(1, ("CIFS Tcon rc = %d", rc));
- }
- if (!rc) {
- atomic_inc(&pSesInfo->inUse);
- tcon->retry = volume_info.retry;
- tcon->nocase = volume_info.nocase;
- tcon->seal = volume_info.seal;
+ goto mount_fail_check;
+ }
+ tcon->ses = pSesInfo;
+
+ /* check for null share name ie connect to dfs root */
+ if ((strchr(volume_info.UNC + 3, '\\') == NULL)
+ && (strchr(volume_info.UNC + 3, '/') == NULL)) {
+ /* rc = connect_to_dfs_path(...) */
+ cFYI(1, ("DFS root not supported"));
+ rc = -ENODEV;
+ goto mount_fail_check;
+ } else {
+ /* BB Do we need to wrap sesSem around
+ * this TCon call and Unix SetFS as
+ * we do on SessSetup and reconnect? */
+ rc = CIFSTCon(xid, pSesInfo, volume_info.UNC,
+ tcon, cifs_sb->local_nls);
+ cFYI(1, ("CIFS Tcon rc = %d", rc));
+ if (volume_info.nodfs) {
+ tcon->Flags &= ~SMB_SHARE_IS_IN_DFS;
+ cFYI(1, ("DFS disabled (%d)",
+ tcon->Flags));
}
}
- }
+ if (rc)
+ goto mount_fail_check;
+ tcon->seal = volume_info.seal;
+ write_lock(&cifs_tcp_ses_lock);
+ list_add(&tcon->tcon_list, &pSesInfo->tcon_list);
+ write_unlock(&cifs_tcp_ses_lock);
+ }
+
+ /* we can have only one retry value for a connection
+ to a share so for resources mounted more than once
+ to the same server share the last value passed in
+ for the retry flag is used */
+ tcon->retry = volume_info.retry;
+ tcon->nocase = volume_info.nocase;
+ tcon->local_lease = volume_info.local_lease;
}
if (pSesInfo) {
if (pSesInfo->capabilities & CAP_LARGE_FILES) {
@@ -2217,91 +2327,49 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
/* BB FIXME fix time_gran to be larger for LANMAN sessions */
sb->s_time_gran = 100;
-/* on error free sesinfo and tcon struct if needed */
+mount_fail_check:
+ /* on error free sesinfo and tcon struct if needed */
if (rc) {
- /* if session setup failed, use count is zero but
- we still need to free cifsd thread */
- if (atomic_read(&srvTcp->socketUseCount) == 0) {
- spin_lock(&GlobalMid_Lock);
- srvTcp->tcpStatus = CifsExiting;
- spin_unlock(&GlobalMid_Lock);
- if (srvTcp->tsk) {
- /* If we could verify that kthread_stop would
- always wake up processes blocked in
- tcp in recv_mesg then we could remove the
- send_sig call */
- force_sig(SIGKILL, srvTcp->tsk);
- kthread_stop(srvTcp->tsk);
- }
- }
- /* If find_unc succeeded then rc == 0 so we can not end */
- if (tcon) /* up accidently freeing someone elses tcon struct */
- tconInfoFree(tcon);
- if (existingCifsSes == NULL) {
- if (pSesInfo) {
- if ((pSesInfo->server) &&
- (pSesInfo->status == CifsGood)) {
- int temp_rc;
- temp_rc = CIFSSMBLogoff(xid, pSesInfo);
- /* if the socketUseCount is now zero */
- if ((temp_rc == -ESHUTDOWN) &&
- (pSesInfo->server) &&
- (pSesInfo->server->tsk)) {
- force_sig(SIGKILL,
- pSesInfo->server->tsk);
- kthread_stop(pSesInfo->server->tsk);
- }
- } else {
- cFYI(1, ("No session or bad tcon"));
- if ((pSesInfo->server) &&
- (pSesInfo->server->tsk)) {
- force_sig(SIGKILL,
- pSesInfo->server->tsk);
- kthread_stop(pSesInfo->server->tsk);
- }
- }
- sesInfoFree(pSesInfo);
- /* pSesInfo = NULL; */
- }
- }
- } else {
- atomic_inc(&tcon->useCount);
- cifs_sb->tcon = tcon;
- tcon->ses = pSesInfo;
-
- /* do not care if following two calls succeed - informational */
- if (!tcon->ipc) {
- CIFSSMBQFSDeviceInfo(xid, tcon);
- CIFSSMBQFSAttributeInfo(xid, tcon);
- }
-
- /* tell server which Unix caps we support */
- if (tcon->ses->capabilities & CAP_UNIX)
- /* reset of caps checks mount to see if unix extensions
- disabled for just this mount */
- reset_cifs_unix_caps(xid, tcon, sb, &volume_info);
+ /* If find_unc succeeded then rc == 0 so we can not end */
+ /* up accidently freeing someone elses tcon struct */
+ if (tcon)
+ cifs_put_tcon(tcon);
+ else if (pSesInfo)
+ cifs_put_smb_ses(pSesInfo);
else
- tcon->unix_ext = 0; /* server does not support them */
+ cifs_put_tcp_session(srvTcp);
+ goto out;
+ }
+ cifs_sb->tcon = tcon;
- /* convert forward to back slashes in prepath here if needed */
- if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0)
- convert_delimiter(cifs_sb->prepath,
- CIFS_DIR_SEP(cifs_sb));
+ /* do not care if following two calls succeed - informational */
+ if (!tcon->ipc) {
+ CIFSSMBQFSDeviceInfo(xid, tcon);
+ CIFSSMBQFSAttributeInfo(xid, tcon);
+ }
- if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) {
- cifs_sb->rsize = 1024 * 127;
- cFYI(DBG2,
- ("no very large read support, rsize now 127K"));
- }
- if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X))
- cifs_sb->wsize = min(cifs_sb->wsize,
- (tcon->ses->server->maxBuf -
- MAX_CIFS_HDR_SIZE));
- if (!(tcon->ses->capabilities & CAP_LARGE_READ_X))
- cifs_sb->rsize = min(cifs_sb->rsize,
- (tcon->ses->server->maxBuf -
- MAX_CIFS_HDR_SIZE));
+ /* tell server which Unix caps we support */
+ if (tcon->ses->capabilities & CAP_UNIX)
+ /* reset of caps checks mount to see if unix extensions
+ disabled for just this mount */
+ reset_cifs_unix_caps(xid, tcon, sb, &volume_info);
+ else
+ tcon->unix_ext = 0; /* server does not support them */
+
+ /* convert forward to back slashes in prepath here if needed */
+ if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0)
+ convert_delimiter(cifs_sb->prepath, CIFS_DIR_SEP(cifs_sb));
+
+ if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) {
+ cifs_sb->rsize = 1024 * 127;
+ cFYI(DBG2, ("no very large read support, rsize now 127K"));
}
+ if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X))
+ cifs_sb->wsize = min(cifs_sb->wsize,
+ (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE));
+ if (!(tcon->ses->capabilities & CAP_LARGE_READ_X))
+ cifs_sb->rsize = min(cifs_sb->rsize,
+ (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE));
/* volume_info.password is freed above when existing session found
(in which case it is not needed anymore) but when new sesion is created
@@ -3471,6 +3539,7 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
/* above now done in SendReceive */
if ((rc == 0) && (tcon != NULL)) {
tcon->tidStatus = CifsGood;
+ tcon->need_reconnect = false;
tcon->tid = smb_buffer_response->Tid;
bcc_ptr = pByteArea(smb_buffer_response);
length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2);
@@ -3542,52 +3611,17 @@ int
cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb)
{
int rc = 0;
- int xid;
- struct cifsSesInfo *ses = NULL;
- struct task_struct *cifsd_task;
char *tmp;
- xid = GetXid();
-
- if (cifs_sb->tcon) {
- ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/
- rc = CIFSSMBTDis(xid, cifs_sb->tcon);
- if (rc == -EBUSY) {
- FreeXid(xid);
- return 0;
- }
- DeleteTconOplockQEntries(cifs_sb->tcon);
- tconInfoFree(cifs_sb->tcon);
- if ((ses) && (ses->server)) {
- /* save off task so we do not refer to ses later */
- cifsd_task = ses->server->tsk;
- cFYI(1, ("About to do SMBLogoff "));
- rc = CIFSSMBLogoff(xid, ses);
- if (rc == -EBUSY) {
- FreeXid(xid);
- return 0;
- } else if (rc == -ESHUTDOWN) {
- cFYI(1, ("Waking up socket by sending signal"));
- if (cifsd_task) {
- force_sig(SIGKILL, cifsd_task);
- kthread_stop(cifsd_task);
- }
- rc = 0;
- } /* else - we have an smb session
- left on this socket do not kill cifsd */
- } else
- cFYI(1, ("No session or bad tcon"));
- }
+ if (cifs_sb->tcon)
+ cifs_put_tcon(cifs_sb->tcon);
cifs_sb->tcon = NULL;
tmp = cifs_sb->prepath;
cifs_sb->prepathlen = 0;
cifs_sb->prepath = NULL;
kfree(tmp);
- if (ses)
- sesInfoFree(ses);
- FreeXid(xid);
return rc;
}
@@ -3701,7 +3735,10 @@ int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo,
cERROR(1, ("Send error in SessSetup = %d", rc));
} else {
cFYI(1, ("CIFS Session Established successfully"));
+ spin_lock(&GlobalMid_Lock);
pSesInfo->status = CifsGood;
+ pSesInfo->need_reconnect = false;
+ spin_unlock(&GlobalMid_Lock);
}
ss_err_exit:
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 62d8bd8f14c..f0a81e631ae 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -488,12 +488,13 @@ int cifs_close(struct inode *inode, struct file *file)
pTcon = cifs_sb->tcon;
if (pSMBFile) {
struct cifsLockInfo *li, *tmp;
-
+ write_lock(&GlobalSMBSeslock);
pSMBFile->closePend = true;
if (pTcon) {
/* no sense reconnecting to close a file that is
already closed */
- if (pTcon->tidStatus != CifsNeedReconnect) {
+ if (!pTcon->need_reconnect) {
+ write_unlock(&GlobalSMBSeslock);
timeout = 2;
while ((atomic_read(&pSMBFile->wrtPending) != 0)
&& (timeout <= 2048)) {
@@ -510,12 +511,15 @@ int cifs_close(struct inode *inode, struct file *file)
timeout *= 4;
}
if (atomic_read(&pSMBFile->wrtPending))
- cERROR(1,
- ("close with pending writes"));
- rc = CIFSSMBClose(xid, pTcon,
+ cERROR(1, ("close with pending write"));
+ if (!pTcon->need_reconnect &&
+ !pSMBFile->invalidHandle)
+ rc = CIFSSMBClose(xid, pTcon,
pSMBFile->netfid);
- }
- }
+ } else
+ write_unlock(&GlobalSMBSeslock);
+ } else
+ write_unlock(&GlobalSMBSeslock);
/* Delete any outstanding lock records.
We'll lose them when the file is closed anyway. */
@@ -587,15 +591,18 @@ int cifs_closedir(struct inode *inode, struct file *file)
pTcon = cifs_sb->tcon;
cFYI(1, ("Freeing private data in close dir"));
+ write_lock(&GlobalSMBSeslock);
if (!pCFileStruct->srch_inf.endOfSearch &&
!pCFileStruct->invalidHandle) {
pCFileStruct->invalidHandle = true;
+ write_unlock(&GlobalSMBSeslock);
rc = CIFSFindClose(xid, pTcon, pCFileStruct->netfid);
cFYI(1, ("Closing uncompleted readdir with rc %d",
rc));
/* not much we can do if it fails anyway, ignore rc */
rc = 0;
- }
+ } else
+ write_unlock(&GlobalSMBSeslock);
ptmp = pCFileStruct->srch_inf.ntwrk_buf_start;
if (ptmp) {
cFYI(1, ("closedir free smb buf in srch struct"));
@@ -1404,7 +1411,10 @@ retry:
if ((wbc->nr_to_write -= n_iov) <= 0)
done = 1;
index = next;
- }
+ } else
+ /* Need to re-find the pages we skipped */
+ index = pvec.pages[0]->index + 1;
+
pagevec_release(&pvec);
}
if (!scanned && !done) {
@@ -1465,7 +1475,11 @@ static int cifs_write_end(struct file *file, struct address_space *mapping,
cFYI(1, ("write_end for page %p from pos %lld with %d bytes",
page, pos, copied));
- if (!PageUptodate(page) && copied == PAGE_CACHE_SIZE)
+ if (PageChecked(page)) {
+ if (copied == len)
+ SetPageUptodate(page);
+ ClearPageChecked(page);
+ } else if (!PageUptodate(page) && copied == PAGE_CACHE_SIZE)
SetPageUptodate(page);
if (!PageUptodate(page)) {
@@ -1824,7 +1838,7 @@ static int cifs_readpages(struct file *file, struct address_space *mapping,
pTcon = cifs_sb->tcon;
pagevec_init(&lru_pvec, 0);
- cFYI(DBG2, ("rpages: num pages %d", num_pages));
+ cFYI(DBG2, ("rpages: num pages %d", num_pages));
for (i = 0; i < num_pages; ) {
unsigned contig_pages;
struct page *tmp_page;
@@ -2052,39 +2066,70 @@ static int cifs_write_begin(struct file *file, struct address_space *mapping,
{
pgoff_t index = pos >> PAGE_CACHE_SHIFT;
loff_t offset = pos & (PAGE_CACHE_SIZE - 1);
+ loff_t page_start = pos & PAGE_MASK;
+ loff_t i_size;
+ struct page *page;
+ int rc = 0;
cFYI(1, ("write_begin from %lld len %d", (long long)pos, len));
- *pagep = __grab_cache_page(mapping, index);
- if (!*pagep)
- return -ENOMEM;
-
- if (PageUptodate(*pagep))
- return 0;
+ page = __grab_cache_page(mapping, index);
+ if (!page) {
+ rc = -ENOMEM;
+ goto out;
+ }
- /* If we are writing a full page it will be up to date,
- no need to read from the server */
- if (len == PAGE_CACHE_SIZE && flags & AOP_FLAG_UNINTERRUPTIBLE)
- return 0;
+ if (PageUptodate(page))
+ goto out;
- if ((file->f_flags & O_ACCMODE) != O_WRONLY) {
- int rc;
+ /*
+ * If we write a full page it will be up to date, no need to read from
+ * the server. If the write is short, we'll end up doing a sync write
+ * instead.
+ */
+ if (len == PAGE_CACHE_SIZE)
+ goto out;
- /* might as well read a page, it is fast enough */
- rc = cifs_readpage_worker(file, *pagep, &offset);
+ /*
+ * optimize away the read when we have an oplock, and we're not
+ * expecting to use any of the data we'd be reading in. That
+ * is, when the page lies beyond the EOF, or straddles the EOF
+ * and the write will cover all of the existing data.
+ */
+ if (CIFS_I(mapping->host)->clientCanCacheRead) {
+ i_size = i_size_read(mapping->host);
+ if (page_start >= i_size ||
+ (offset == 0 && (pos + len) >= i_size)) {
+ zero_user_segments(page, 0, offset,
+ offset + len,
+ PAGE_CACHE_SIZE);
+ /*
+ * PageChecked means that the parts of the page
+ * to which we're not writing are considered up
+ * to date. Once the data is copied to the
+ * page, it can be set uptodate.
+ */
+ SetPageChecked(page);
+ goto out;
+ }
+ }
- /* we do not need to pass errors back
- e.g. if we do not have read access to the file
- because cifs_write_end will attempt synchronous writes
- -- shaggy */
+ if ((file->f_flags & O_ACCMODE) != O_WRONLY) {
+ /*
+ * might as well read a page, it is fast enough. If we get
+ * an error, we don't need to return it. cifs_write_end will
+ * do a sync write instead since PG_uptodate isn't set.
+ */
+ cifs_readpage_worker(file, page, &page_start);
} else {
/* we could try using another file handle if there is one -
but how would we lock it to prevent close of that handle
racing with this read? In any case
this will be written out by write_end so is fine */
}
-
- return 0;
+out:
+ *pagep = page;
+ return rc;
}
const struct address_space_operations cifs_addr_ops = {
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index a8c833345fc..ff8c68de4a9 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -506,6 +506,7 @@ int cifs_get_inode_info(struct inode **pinode,
inode = *pinode;
cifsInfo = CIFS_I(inode);
cifsInfo->cifsAttrs = attr;
+ cifsInfo->delete_pending = pfindData->DeletePending ? true : false;
cFYI(1, ("Old time %ld", cifsInfo->time));
cifsInfo->time = jiffies;
cFYI(1, ("New time %ld", cifsInfo->time));
@@ -772,63 +773,106 @@ out:
* anything else.
*/
static int
-cifs_rename_pending_delete(char *full_path, struct inode *inode, int xid)
+cifs_rename_pending_delete(char *full_path, struct dentry *dentry, int xid)
{
int oplock = 0;
int rc;
__u16 netfid;
+ struct inode *inode = dentry->d_inode;
struct cifsInodeInfo *cifsInode = CIFS_I(inode);
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct cifsTconInfo *tcon = cifs_sb->tcon;
- __u32 dosattr;
- FILE_BASIC_INFO *info_buf;
+ __u32 dosattr, origattr;
+ FILE_BASIC_INFO *info_buf = NULL;
rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
- DELETE|FILE_WRITE_ATTRIBUTES,
- CREATE_NOT_DIR|CREATE_DELETE_ON_CLOSE,
+ DELETE|FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR,
&netfid, &oplock, NULL, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc != 0)
goto out;
- /* set ATTR_HIDDEN and clear ATTR_READONLY */
- cifsInode = CIFS_I(inode);
- dosattr = cifsInode->cifsAttrs & ~ATTR_READONLY;
+ origattr = cifsInode->cifsAttrs;
+ if (origattr == 0)
+ origattr |= ATTR_NORMAL;
+
+ dosattr = origattr & ~ATTR_READONLY;
if (dosattr == 0)
dosattr |= ATTR_NORMAL;
dosattr |= ATTR_HIDDEN;
- info_buf = kzalloc(sizeof(*info_buf), GFP_KERNEL);
- if (info_buf == NULL) {
- rc = -ENOMEM;
- goto out_close;
+ /* set ATTR_HIDDEN and clear ATTR_READONLY, but only if needed */
+ if (dosattr != origattr) {
+ info_buf = kzalloc(sizeof(*info_buf), GFP_KERNEL);
+ if (info_buf == NULL) {
+ rc = -ENOMEM;
+ goto out_close;
+ }
+ info_buf->Attributes = cpu_to_le32(dosattr);
+ rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid,
+ current->tgid);
+ /* although we would like to mark the file hidden
+ if that fails we will still try to rename it */
+ if (rc != 0)
+ cifsInode->cifsAttrs = dosattr;
+ else
+ dosattr = origattr; /* since not able to change them */
}
- info_buf->Attributes = cpu_to_le32(dosattr);
- rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid, current->tgid);
- kfree(info_buf);
- if (rc != 0)
- goto out_close;
- cifsInode->cifsAttrs = dosattr;
- /* silly-rename the file */
- CIFSSMBRenameOpenFile(xid, tcon, netfid, NULL, cifs_sb->local_nls,
+ /* rename the file */
+ rc = CIFSSMBRenameOpenFile(xid, tcon, netfid, NULL, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (rc != 0) {
+ rc = -ETXTBSY;
+ goto undo_setattr;
+ }
- /* set DELETE_ON_CLOSE */
- rc = CIFSSMBSetFileDisposition(xid, tcon, true, netfid, current->tgid);
-
- /*
- * some samba versions return -ENOENT when we try to set the file
- * disposition here. Likely a samba bug, but work around it for now
- */
- if (rc == -ENOENT)
- rc = 0;
+ /* try to set DELETE_ON_CLOSE */
+ if (!cifsInode->delete_pending) {
+ rc = CIFSSMBSetFileDisposition(xid, tcon, true, netfid,
+ current->tgid);
+ /*
+ * some samba versions return -ENOENT when we try to set the
+ * file disposition here. Likely a samba bug, but work around
+ * it for now. This means that some cifsXXX files may hang
+ * around after they shouldn't.
+ *
+ * BB: remove this hack after more servers have the fix
+ */
+ if (rc == -ENOENT)
+ rc = 0;
+ else if (rc != 0) {
+ rc = -ETXTBSY;
+ goto undo_rename;
+ }
+ cifsInode->delete_pending = true;
+ }
out_close:
CIFSSMBClose(xid, tcon, netfid);
out:
+ kfree(info_buf);
return rc;
+
+ /*
+ * reset everything back to the original state. Don't bother
+ * dealing with errors here since we can't do anything about
+ * them anyway.
+ */
+undo_rename:
+ CIFSSMBRenameOpenFile(xid, tcon, netfid, dentry->d_name.name,
+ cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+undo_setattr:
+ if (dosattr != origattr) {
+ info_buf->Attributes = cpu_to_le32(origattr);
+ if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid,
+ current->tgid))
+ cifsInode->cifsAttrs = origattr;
+ }
+
+ goto out_close;
}
int cifs_unlink(struct inode *dir, struct dentry *dentry)
@@ -878,7 +922,7 @@ psx_del_no_retry:
} else if (rc == -ENOENT) {
d_drop(dentry);
} else if (rc == -ETXTBSY) {
- rc = cifs_rename_pending_delete(full_path, inode, xid);
+ rc = cifs_rename_pending_delete(full_path, dentry, xid);
if (rc == 0)
drop_nlink(inode);
} else if (rc == -EACCES && dosattr == 0) {
@@ -1241,22 +1285,21 @@ cifs_do_rename(int xid, struct dentry *from_dentry, const char *fromPath,
return rc;
}
-int cifs_rename(struct inode *source_inode, struct dentry *source_direntry,
- struct inode *target_inode, struct dentry *target_direntry)
+int cifs_rename(struct inode *source_dir, struct dentry *source_dentry,
+ struct inode *target_dir, struct dentry *target_dentry)
{
char *fromName = NULL;
char *toName = NULL;
struct cifs_sb_info *cifs_sb_source;
struct cifs_sb_info *cifs_sb_target;
- struct cifsTconInfo *pTcon;
+ struct cifsTconInfo *tcon;
FILE_UNIX_BASIC_INFO *info_buf_source = NULL;
FILE_UNIX_BASIC_INFO *info_buf_target;
- int xid;
- int rc;
+ int xid, rc, tmprc;
- cifs_sb_target = CIFS_SB(target_inode->i_sb);
- cifs_sb_source = CIFS_SB(source_inode->i_sb);
- pTcon = cifs_sb_source->tcon;
+ cifs_sb_target = CIFS_SB(target_dir->i_sb);
+ cifs_sb_source = CIFS_SB(source_dir->i_sb);
+ tcon = cifs_sb_source->tcon;
xid = GetXid();
@@ -1264,7 +1307,7 @@ int cifs_rename(struct inode *source_inode, struct dentry *source_direntry,
* BB: this might be allowed if same server, but different share.
* Consider adding support for this
*/
- if (pTcon != cifs_sb_target->tcon) {
+ if (tcon != cifs_sb_target->tcon) {
rc = -EXDEV;
goto cifs_rename_exit;
}
@@ -1273,65 +1316,67 @@ int cifs_rename(struct inode *source_inode, struct dentry *source_direntry,
* we already have the rename sem so we do not need to
* grab it again here to protect the path integrity
*/
- fromName = build_path_from_dentry(source_direntry);
+ fromName = build_path_from_dentry(source_dentry);
if (fromName == NULL) {
rc = -ENOMEM;
goto cifs_rename_exit;
}
- toName = build_path_from_dentry(target_direntry);
+ toName = build_path_from_dentry(target_dentry);
if (toName == NULL) {
rc = -ENOMEM;
goto cifs_rename_exit;
}
- rc = cifs_do_rename(xid, source_direntry, fromName,
- target_direntry, toName);
+ rc = cifs_do_rename(xid, source_dentry, fromName,
+ target_dentry, toName);
- if (rc == -EEXIST) {
- if (pTcon->unix_ext) {
- /*
- * Are src and dst hardlinks of same inode? We can
- * only tell with unix extensions enabled
- */
- info_buf_source =
- kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO),
- GFP_KERNEL);
- if (info_buf_source == NULL)
- goto unlink_target;
-
- info_buf_target = info_buf_source + 1;
- rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName,
- info_buf_source,
- cifs_sb_source->local_nls,
- cifs_sb_source->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (rc != 0)
- goto unlink_target;
-
- rc = CIFSSMBUnixQPathInfo(xid, pTcon,
- toName, info_buf_target,
- cifs_sb_target->local_nls,
- /* remap based on source sb */
- cifs_sb_source->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (rc == -EEXIST && tcon->unix_ext) {
+ /*
+ * Are src and dst hardlinks of same inode? We can
+ * only tell with unix extensions enabled
+ */
+ info_buf_source =
+ kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO),
+ GFP_KERNEL);
+ if (info_buf_source == NULL) {
+ rc = -ENOMEM;
+ goto cifs_rename_exit;
+ }
+
+ info_buf_target = info_buf_source + 1;
+ tmprc = CIFSSMBUnixQPathInfo(xid, tcon, fromName,
+ info_buf_source,
+ cifs_sb_source->local_nls,
+ cifs_sb_source->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (tmprc != 0)
+ goto unlink_target;
+
+ tmprc = CIFSSMBUnixQPathInfo(xid, tcon,
+ toName, info_buf_target,
+ cifs_sb_target->local_nls,
+ /* remap based on source sb */
+ cifs_sb_source->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
- if (rc == 0 && (info_buf_source->UniqueId ==
- info_buf_target->UniqueId))
- /* same file, POSIX says that this is a noop */
- goto cifs_rename_exit;
- } /* else ... BB we could add the same check for Windows by
+ if (tmprc == 0 && (info_buf_source->UniqueId ==
+ info_buf_target->UniqueId)) {
+ /* same file, POSIX says that this is a noop */
+ rc = 0;
+ goto cifs_rename_exit;
+ }
+ } /* else ... BB we could add the same check for Windows by
checking the UniqueId via FILE_INTERNAL_INFO */
+
unlink_target:
- /*
- * we either can not tell the files are hardlinked (as with
- * Windows servers) or files are not hardlinked. Delete the
- * target manually before renaming to follow POSIX rather than
- * Windows semantics
- */
- cifs_unlink(target_inode, target_direntry);
- rc = cifs_do_rename(xid, source_direntry, fromName,
- target_direntry, toName);
+ if ((rc == -EACCES) || (rc == -EEXIST)) {
+ tmprc = cifs_unlink(target_dir, target_dentry);
+ if (tmprc)
+ goto cifs_rename_exit;
+
+ rc = cifs_do_rename(xid, source_dentry, fromName,
+ target_dentry, toName);
}
cifs_rename_exit:
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 88786ba02d2..9ee3f689c2b 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -75,12 +75,12 @@ sesInfoAlloc(void)
ret_buf = kzalloc(sizeof(struct cifsSesInfo), GFP_KERNEL);
if (ret_buf) {
- write_lock(&GlobalSMBSeslock);
atomic_inc(&sesInfoAllocCount);
ret_buf->status = CifsNew;
- list_add(&ret_buf->cifsSessionList, &GlobalSMBSessionList);
+ ++ret_buf->ses_count;
+ INIT_LIST_HEAD(&ret_buf->smb_ses_list);
+ INIT_LIST_HEAD(&ret_buf->tcon_list);
init_MUTEX(&ret_buf->sesSem);
- write_unlock(&GlobalSMBSeslock);
}
return ret_buf;
}
@@ -93,10 +93,7 @@ sesInfoFree(struct cifsSesInfo *buf_to_free)
return;
}
- write_lock(&GlobalSMBSeslock);
atomic_dec(&sesInfoAllocCount);
- list_del(&buf_to_free->cifsSessionList);
- write_unlock(&GlobalSMBSeslock);
kfree(buf_to_free->serverOS);
kfree(buf_to_free->serverDomain);
kfree(buf_to_free->serverNOS);
@@ -111,17 +108,14 @@ tconInfoAlloc(void)
struct cifsTconInfo *ret_buf;
ret_buf = kzalloc(sizeof(struct cifsTconInfo), GFP_KERNEL);
if (ret_buf) {
- write_lock(&GlobalSMBSeslock);
atomic_inc(&tconInfoAllocCount);
- list_add(&ret_buf->cifsConnectionList,
- &GlobalTreeConnectionList);
ret_buf->tidStatus = CifsNew;
+ ++ret_buf->tc_count;
INIT_LIST_HEAD(&ret_buf->openFileList);
- init_MUTEX(&ret_buf->tconSem);
+ INIT_LIST_HEAD(&ret_buf->tcon_list);
#ifdef CONFIG_CIFS_STATS
spin_lock_init(&ret_buf->stat_lock);
#endif
- write_unlock(&GlobalSMBSeslock);
}
return ret_buf;
}
@@ -133,10 +127,7 @@ tconInfoFree(struct cifsTconInfo *buf_to_free)
cFYI(1, ("Null buffer passed to tconInfoFree"));
return;
}
- write_lock(&GlobalSMBSeslock);
atomic_dec(&tconInfoAllocCount);
- list_del(&buf_to_free->cifsConnectionList);
- write_unlock(&GlobalSMBSeslock);
kfree(buf_to_free->nativeFileSystem);
kfree(buf_to_free);
}
@@ -350,9 +341,9 @@ header_assemble(struct smb_hdr *buffer, char smb_command /* command */ ,
if (current->fsuid != treeCon->ses->linux_uid) {
cFYI(1, ("Multiuser mode and UID "
"did not match tcon uid"));
- read_lock(&GlobalSMBSeslock);
- list_for_each(temp_item, &GlobalSMBSessionList) {
- ses = list_entry(temp_item, struct cifsSesInfo, cifsSessionList);
+ read_lock(&cifs_tcp_ses_lock);
+ list_for_each(temp_item, &treeCon->ses->server->smb_ses_list) {
+ ses = list_entry(temp_item, struct cifsSesInfo, smb_ses_list);
if (ses->linux_uid == current->fsuid) {
if (ses->server == treeCon->ses->server) {
cFYI(1, ("found matching uid substitute right smb_uid"));
@@ -364,7 +355,7 @@ header_assemble(struct smb_hdr *buffer, char smb_command /* command */ ,
}
}
}
- read_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
}
}
}
@@ -497,9 +488,10 @@ bool
is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv)
{
struct smb_com_lock_req *pSMB = (struct smb_com_lock_req *)buf;
- struct list_head *tmp;
- struct list_head *tmp1;
+ struct list_head *tmp, *tmp1, *tmp2;
+ struct cifsSesInfo *ses;
struct cifsTconInfo *tcon;
+ struct cifsInodeInfo *pCifsInode;
struct cifsFileInfo *netfile;
cFYI(1, ("Checking for oplock break or dnotify response"));
@@ -554,42 +546,45 @@ is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv)
return false;
/* look up tcon based on tid & uid */
- read_lock(&GlobalSMBSeslock);
- list_for_each(tmp, &GlobalTreeConnectionList) {
- tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
- if ((tcon->tid == buf->Tid) && (srv == tcon->ses->server)) {
+ read_lock(&cifs_tcp_ses_lock);
+ list_for_each(tmp, &srv->smb_ses_list) {
+ ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list);
+ list_for_each(tmp1, &ses->tcon_list) {
+ tcon = list_entry(tmp1, struct cifsTconInfo, tcon_list);
+ if (tcon->tid != buf->Tid)
+ continue;
+
cifs_stats_inc(&tcon->num_oplock_brks);
- list_for_each(tmp1, &tcon->openFileList) {
- netfile = list_entry(tmp1, struct cifsFileInfo,
+ write_lock(&GlobalSMBSeslock);
+ list_for_each(tmp2, &tcon->openFileList) {
+ netfile = list_entry(tmp2, struct cifsFileInfo,
tlist);
- if (pSMB->Fid == netfile->netfid) {
- struct cifsInodeInfo *pCifsInode;
- read_unlock(&GlobalSMBSeslock);
- cFYI(1,
- ("file id match, oplock break"));
- pCifsInode =
- CIFS_I(netfile->pInode);
- pCifsInode->clientCanCacheAll = false;
- if (pSMB->OplockLevel == 0)
- pCifsInode->clientCanCacheRead
- = false;
- pCifsInode->oplockPending = true;
- AllocOplockQEntry(netfile->pInode,
- netfile->netfid,
- tcon);
- cFYI(1,
- ("about to wake up oplock thread"));
- if (oplockThread)
- wake_up_process(oplockThread);
- return true;
- }
+ if (pSMB->Fid != netfile->netfid)
+ continue;
+
+ write_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
+ cFYI(1, ("file id match, oplock break"));
+ pCifsInode = CIFS_I(netfile->pInode);
+ pCifsInode->clientCanCacheAll = false;
+ if (pSMB->OplockLevel == 0)
+ pCifsInode->clientCanCacheRead = false;
+ pCifsInode->oplockPending = true;
+ AllocOplockQEntry(netfile->pInode,
+ netfile->netfid, tcon);
+ cFYI(1, ("about to wake up oplock thread"));
+ if (oplockThread)
+ wake_up_process(oplockThread);
+
+ return true;
}
- read_unlock(&GlobalSMBSeslock);
+ write_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
cFYI(1, ("No matching file for oplock break"));
return true;
}
}
- read_unlock(&GlobalSMBSeslock);
+ read_unlock(&cifs_tcp_ses_lock);
cFYI(1, ("Can not process oplock break for non-existent connection"));
return true;
}
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 765adf12d54..9f51f9bf029 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -741,11 +741,14 @@ static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon,
(index_to_find < first_entry_in_buffer)) {
/* close and restart search */
cFYI(1, ("search backing up - close and restart search"));
+ write_lock(&GlobalSMBSeslock);
if (!cifsFile->srch_inf.endOfSearch &&
!cifsFile->invalidHandle) {
cifsFile->invalidHandle = true;
+ write_unlock(&GlobalSMBSeslock);
CIFSFindClose(xid, pTcon, cifsFile->netfid);
- }
+ } else
+ write_unlock(&GlobalSMBSeslock);
if (cifsFile->srch_inf.ntwrk_buf_start) {
cFYI(1, ("freeing SMB ff cache buf on search rewind"));
if (cifsFile->srch_inf.smallBuf)
@@ -762,14 +765,15 @@ static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon,
rc));
return rc;
}
+ cifs_save_resume_key(cifsFile->srch_inf.last_entry, cifsFile);
}
while ((index_to_find >= cifsFile->srch_inf.index_of_last_entry) &&
(rc == 0) && !cifsFile->srch_inf.endOfSearch) {
cFYI(1, ("calling findnext2"));
- cifs_save_resume_key(cifsFile->srch_inf.last_entry, cifsFile);
rc = CIFSFindNext(xid, pTcon, cifsFile->netfid,
&cifsFile->srch_inf);
+ cifs_save_resume_key(cifsFile->srch_inf.last_entry, cifsFile);
if (rc)
return -ENOENT;
}
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index bf0e6d8e382..ff8243a8fe3 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -161,7 +161,7 @@ void DeleteTconOplockQEntries(struct cifsTconInfo *tcon)
int
smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer,
- unsigned int smb_buf_length, struct sockaddr *sin)
+ unsigned int smb_buf_length, struct sockaddr *sin, bool noblocksnd)
{
int rc = 0;
int i = 0;
@@ -178,7 +178,10 @@ smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer,
smb_msg.msg_namelen = sizeof(struct sockaddr);
smb_msg.msg_control = NULL;
smb_msg.msg_controllen = 0;
- smb_msg.msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL; /* BB add more flags?*/
+ if (noblocksnd)
+ smb_msg.msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL;
+ 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
@@ -229,8 +232,8 @@ smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer,
}
static int
-smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
- struct sockaddr *sin)
+smb_send2(struct TCP_Server_Info *server, struct kvec *iov, int n_vec,
+ struct sockaddr *sin, bool noblocksnd)
{
int rc = 0;
int i = 0;
@@ -240,6 +243,7 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
unsigned int total_len;
int first_vec = 0;
unsigned int smb_buf_length = smb_buffer->smb_buf_length;
+ struct socket *ssocket = server->ssocket;
if (ssocket == NULL)
return -ENOTSOCK; /* BB eventually add reconnect code here */
@@ -248,7 +252,10 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
smb_msg.msg_namelen = sizeof(struct sockaddr);
smb_msg.msg_control = NULL;
smb_msg.msg_controllen = 0;
- smb_msg.msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL; /* BB add more flags?*/
+ if (noblocksnd)
+ smb_msg.msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL;
+ 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
@@ -283,8 +290,11 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
if (rc < 0)
break;
- if (rc >= total_len) {
- WARN_ON(rc > total_len);
+ if (rc == total_len) {
+ total_len = 0;
+ break;
+ } else if (rc > total_len) {
+ cERROR(1, ("sent %d requested %d", rc, total_len));
break;
}
if (rc == 0) {
@@ -312,6 +322,16 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
i = 0; /* in case we get ENOSPC on the next send */
}
+ if ((total_len > 0) && (total_len != smb_buf_length + 4)) {
+ cFYI(1, ("partial send (%d remaining), terminating session",
+ total_len));
+ /* If we have only sent part of an SMB then the next SMB
+ could be taken as the remainder of this one. We need
+ to kill the socket so the server throws away the partial
+ SMB */
+ server->tcpStatus = CifsNeedReconnect;
+ }
+
if (rc < 0) {
cERROR(1, ("Error %d sending data on socket to server", rc));
} else
@@ -518,8 +538,9 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
#ifdef CONFIG_CIFS_STATS2
atomic_inc(&ses->server->inSend);
#endif
- rc = smb_send2(ses->server->ssocket, iov, n_vec,
- (struct sockaddr *) &(ses->server->addr.sockAddr));
+ rc = smb_send2(ses->server, iov, n_vec,
+ (struct sockaddr *) &(ses->server->addr.sockAddr),
+ ses->server->noblocksnd);
#ifdef CONFIG_CIFS_STATS2
atomic_dec(&ses->server->inSend);
midQ->when_sent = jiffies;
@@ -711,7 +732,8 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
atomic_inc(&ses->server->inSend);
#endif
rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length,
- (struct sockaddr *) &(ses->server->addr.sockAddr));
+ (struct sockaddr *) &(ses->server->addr.sockAddr),
+ ses->server->noblocksnd);
#ifdef CONFIG_CIFS_STATS2
atomic_dec(&ses->server->inSend);
midQ->when_sent = jiffies;
@@ -851,7 +873,8 @@ send_nt_cancel(struct cifsTconInfo *tcon, struct smb_hdr *in_buf,
return rc;
}
rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length,
- (struct sockaddr *) &(ses->server->addr.sockAddr));
+ (struct sockaddr *) &(ses->server->addr.sockAddr),
+ ses->server->noblocksnd);
up(&ses->server->tcpSem);
return rc;
}
@@ -941,7 +964,8 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon,
atomic_inc(&ses->server->inSend);
#endif
rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length,
- (struct sockaddr *) &(ses->server->addr.sockAddr));
+ (struct sockaddr *) &(ses->server->addr.sockAddr),
+ ses->server->noblocksnd);
#ifdef CONFIG_CIFS_STATS2
atomic_dec(&ses->server->inSend);
midQ->when_sent = jiffies;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-03-01 10:42:47 +0000