summaryrefslogtreecommitdiffstats
path: root/fs/cifs
diff options
context:
space:
mode:
Diffstat (limited to 'fs/cifs')
-rw-r--r--fs/cifs/cifs_dfs_ref.c1
-rw-r--r--fs/cifs/cifs_fs_sb.h3
-rw-r--r--fs/cifs/cifs_spnego.c1
-rw-r--r--fs/cifs/cifs_unicode.c1
-rw-r--r--fs/cifs/cifsacl.c1
-rw-r--r--fs/cifs/cifsencrypt.c1
-rw-r--r--fs/cifs/cifsfs.c14
-rw-r--r--fs/cifs/cifsfs.h3
-rw-r--r--fs/cifs/cifsglob.h2
-rw-r--r--fs/cifs/cifsproto.h6
-rw-r--r--fs/cifs/cifssmb.c170
-rw-r--r--fs/cifs/connect.c1
-rw-r--r--fs/cifs/dir.c2
-rw-r--r--fs/cifs/dns_resolve.c1
-rw-r--r--fs/cifs/file.c36
-rw-r--r--fs/cifs/inode.c298
-rw-r--r--fs/cifs/link.c1
-rw-r--r--fs/cifs/readdir.c1
-rw-r--r--fs/cifs/sess.c1
-rw-r--r--fs/cifs/smbencrypt.c1
-rw-r--r--fs/cifs/transport.c1
-rw-r--r--fs/cifs/xattr.c1
22 files changed, 422 insertions, 125 deletions
diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c
index b1d61d0bdfc..78e4d2a3a68 100644
--- a/fs/cifs/cifs_dfs_ref.c
+++ b/fs/cifs/cifs_dfs_ref.c
@@ -15,6 +15,7 @@
#include <linux/dcache.h>
#include <linux/mount.h>
#include <linux/namei.h>
+#include <linux/slab.h>
#include <linux/vfs.h>
#include <linux/fs.h>
#include "cifsglob.h"
diff --git a/fs/cifs/cifs_fs_sb.h b/fs/cifs/cifs_fs_sb.h
index 4797787c6a4..246a167cb91 100644
--- a/fs/cifs/cifs_fs_sb.h
+++ b/fs/cifs/cifs_fs_sb.h
@@ -18,6 +18,8 @@
#ifndef _CIFS_FS_SB_H
#define _CIFS_FS_SB_H
+#include <linux/backing-dev.h>
+
#define CIFS_MOUNT_NO_PERM 1 /* do not do client vfs_perm check */
#define CIFS_MOUNT_SET_UID 2 /* set current's euid in create etc. */
#define CIFS_MOUNT_SERVER_INUM 4 /* inode numbers from uniqueid from server */
@@ -50,5 +52,6 @@ struct cifs_sb_info {
#ifdef CONFIG_CIFS_DFS_UPCALL
char *mountdata; /* mount options received at mount time */
#endif
+ struct backing_dev_info bdi;
};
#endif /* _CIFS_FS_SB_H */
diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c
index 8ec7736ce95..310d12f69a9 100644
--- a/fs/cifs/cifs_spnego.c
+++ b/fs/cifs/cifs_spnego.c
@@ -20,6 +20,7 @@
*/
#include <linux/list.h>
+#include <linux/slab.h>
#include <linux/string.h>
#include <keys/user-type.h>
#include <linux/key-type.h>
diff --git a/fs/cifs/cifs_unicode.c b/fs/cifs/cifs_unicode.c
index 714a542cbaf..d07676bd76d 100644
--- a/fs/cifs/cifs_unicode.c
+++ b/fs/cifs/cifs_unicode.c
@@ -19,6 +19,7 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/fs.h>
+#include <linux/slab.h>
#include "cifs_unicode.h"
#include "cifs_uniupr.h"
#include "cifspdu.h"
diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index 7dfe0842a6f..9b716d044bb 100644
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -22,6 +22,7 @@
*/
#include <linux/fs.h>
+#include <linux/slab.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsacl.h"
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index 7efe1745494..fbe986430d0 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -20,6 +20,7 @@
*/
#include <linux/fs.h>
+#include <linux/slab.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifs_debug.h"
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 8c6a0362717..ad235d604a0 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -103,6 +103,12 @@ cifs_read_super(struct super_block *sb, void *data,
if (cifs_sb == NULL)
return -ENOMEM;
+ rc = bdi_setup_and_register(&cifs_sb->bdi, "cifs", BDI_CAP_MAP_COPY);
+ if (rc) {
+ kfree(cifs_sb);
+ return rc;
+ }
+
#ifdef CONFIG_CIFS_DFS_UPCALL
/* copy mount params to sb for use in submounts */
/* BB: should we move this after the mount so we
@@ -115,6 +121,7 @@ cifs_read_super(struct super_block *sb, void *data,
int len = strlen(data);
cifs_sb->mountdata = kzalloc(len + 1, GFP_KERNEL);
if (cifs_sb->mountdata == NULL) {
+ bdi_destroy(&cifs_sb->bdi);
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
return -ENOMEM;
@@ -135,6 +142,7 @@ cifs_read_super(struct super_block *sb, void *data,
sb->s_magic = CIFS_MAGIC_NUMBER;
sb->s_op = &cifs_super_ops;
+ sb->s_bdi = &cifs_sb->bdi;
/* if (cifs_sb->tcon->ses->server->maxBuf > MAX_CIFS_HDR_SIZE + 512)
sb->s_blocksize =
cifs_sb->tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE; */
@@ -183,6 +191,7 @@ out_mount_failed:
}
#endif
unload_nls(cifs_sb->local_nls);
+ bdi_destroy(&cifs_sb->bdi);
kfree(cifs_sb);
}
return rc;
@@ -214,6 +223,7 @@ cifs_put_super(struct super_block *sb)
#endif
unload_nls(cifs_sb->local_nls);
+ bdi_destroy(&cifs_sb->bdi);
kfree(cifs_sb);
unlock_kernel();
@@ -312,6 +322,7 @@ cifs_alloc_inode(struct super_block *sb)
cifs_inode->clientCanCacheRead = false;
cifs_inode->clientCanCacheAll = false;
cifs_inode->delete_pending = false;
+ cifs_inode->invalid_mapping = false;
cifs_inode->vfs_inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */
cifs_inode->server_eof = 0;
@@ -638,7 +649,7 @@ static loff_t cifs_llseek(struct file *file, loff_t offset, int origin)
setting the revalidate time to zero */
CIFS_I(file->f_path.dentry->d_inode)->time = 0;
- retval = cifs_revalidate(file->f_path.dentry);
+ retval = cifs_revalidate_file(file);
if (retval < 0)
return (loff_t)retval;
}
@@ -807,6 +818,7 @@ const struct file_operations cifs_file_direct_nobrl_ops = {
.release = cifs_close,
.fsync = cifs_fsync,
.flush = cifs_flush,
+ .mmap = cifs_file_mmap,
.splice_read = generic_file_splice_read,
#ifdef CONFIG_CIFS_POSIX
.unlocked_ioctl = cifs_ioctl,
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 78c1b86d55f..7aa57ecdc43 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -61,7 +61,8 @@ extern int cifs_mkdir(struct inode *, struct dentry *, int);
extern int cifs_rmdir(struct inode *, struct dentry *);
extern int cifs_rename(struct inode *, struct dentry *, struct inode *,
struct dentry *);
-extern int cifs_revalidate(struct dentry *);
+extern int cifs_revalidate_file(struct file *filp);
+extern int cifs_revalidate_dentry(struct dentry *);
extern int cifs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
extern int cifs_setattr(struct dentry *, struct iattr *);
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index a1c817eb291..ecf0ffbe2b6 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -18,6 +18,7 @@
*/
#include <linux/in.h>
#include <linux/in6.h>
+#include <linux/slab.h>
#include <linux/slow-work.h>
#include "cifs_fs_sb.h"
#include "cifsacl.h"
@@ -389,6 +390,7 @@ struct cifsInodeInfo {
bool clientCanCacheRead:1; /* read oplock */
bool clientCanCacheAll:1; /* read and writebehind oplock */
bool delete_pending:1; /* DELETE_ON_CLOSE is set */
+ bool invalid_mapping:1; /* pagecache is invalid */
u64 server_eof; /* current file size on server */
u64 uniqueid; /* server inode number */
struct inode vfs_inode;
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 88e2bc44ac5..39e47f46dea 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -104,10 +104,12 @@ extern void cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
extern struct inode *cifs_iget(struct super_block *sb,
struct cifs_fattr *fattr);
+extern int cifs_get_file_info(struct file *filp);
extern int cifs_get_inode_info(struct inode **pinode,
const unsigned char *search_path,
FILE_ALL_INFO *pfile_info,
struct super_block *sb, int xid, const __u16 *pfid);
+extern int cifs_get_file_info_unix(struct file *filp);
extern int cifs_get_inode_info_unix(struct inode **pinode,
const unsigned char *search_path,
struct super_block *sb, int xid);
@@ -142,6 +144,8 @@ extern int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,
extern int CIFSFindClose(const int, struct cifsTconInfo *tcon,
const __u16 search_handle);
+extern int CIFSSMBQFileInfo(const int xid, struct cifsTconInfo *tcon,
+ u16 netfid, FILE_ALL_INFO *pFindData);
extern int CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon,
const unsigned char *searchName,
FILE_ALL_INFO *findData,
@@ -152,6 +156,8 @@ extern int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon,
FILE_ALL_INFO *findData,
const struct nls_table *nls_codepage, int remap);
+extern int CIFSSMBUnixQFileInfo(const int xid, struct cifsTconInfo *tcon,
+ u16 netfid, FILE_UNIX_BASIC_INFO *pFindData);
extern int CIFSSMBUnixQPathInfo(const int xid,
struct cifsTconInfo *tcon,
const unsigned char *searchName,
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 61183589984..5d3f29fef53 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -30,6 +30,7 @@
#include <linux/fs.h>
#include <linux/kernel.h>
#include <linux/vfs.h>
+#include <linux/slab.h>
#include <linux/posix_acl_xattr.h>
#include <asm/uaccess.h>
#include "cifspdu.h"
@@ -500,7 +501,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
} else if (pSMBr->hdr.WordCount == 13) {
cERROR(1, ("mount failed, cifs module not built "
"with CIFS_WEAK_PW_HASH support"));
- rc = -EOPNOTSUPP;
+ rc = -EOPNOTSUPP;
#endif /* WEAK_PW_HASH */
goto neg_err_exit;
} else if (pSMBr->hdr.WordCount != 17) {
@@ -1430,6 +1431,8 @@ CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
__u32 bytes_sent;
__u16 byte_count;
+ *nbytes = 0;
+
/* cFYI(1, ("write at %lld %d bytes", offset, count));*/
if (tcon->ses == NULL)
return -ECONNABORTED;
@@ -1512,11 +1515,18 @@ CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
cifs_stats_inc(&tcon->num_writes);
if (rc) {
cFYI(1, ("Send error in write = %d", rc));
- *nbytes = 0;
} else {
*nbytes = le16_to_cpu(pSMBr->CountHigh);
*nbytes = (*nbytes) << 16;
*nbytes += le16_to_cpu(pSMBr->Count);
+
+ /*
+ * Mask off high 16 bits when bytes written as returned by the
+ * server is greater than bytes requested by the client. Some
+ * OS/2 servers are known to set incorrect CountHigh values.
+ */
+ if (*nbytes > count)
+ *nbytes &= 0xFFFF;
}
cifs_buf_release(pSMB);
@@ -1605,6 +1615,14 @@ CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
*nbytes = le16_to_cpu(pSMBr->CountHigh);
*nbytes = (*nbytes) << 16;
*nbytes += le16_to_cpu(pSMBr->Count);
+
+ /*
+ * Mask off high 16 bits when bytes written as returned by the
+ * server is greater than bytes requested by the client. OS/2
+ * servers are known to set incorrect CountHigh values.
+ */
+ if (*nbytes > count)
+ *nbytes &= 0xFFFF;
}
/* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */
@@ -1793,8 +1811,21 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
}
parm_data = (struct cifs_posix_lock *)
((char *)&pSMBr->hdr.Protocol + data_offset);
- if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK))
+ if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK))
pLockData->fl_type = F_UNLCK;
+ else {
+ if (parm_data->lock_type ==
+ __constant_cpu_to_le16(CIFS_RDLCK))
+ pLockData->fl_type = F_RDLCK;
+ else if (parm_data->lock_type ==
+ __constant_cpu_to_le16(CIFS_WRLCK))
+ pLockData->fl_type = F_WRLCK;
+
+ pLockData->fl_start = parm_data->start;
+ pLockData->fl_end = parm_data->start +
+ parm_data->length - 1;
+ pLockData->fl_pid = parm_data->pid;
+ }
}
plk_err_exit:
@@ -3230,8 +3261,72 @@ QInfRetry:
return rc;
}
+int
+CIFSSMBQFileInfo(const int xid, struct cifsTconInfo *tcon,
+ u16 netfid, FILE_ALL_INFO *pFindData)
+{
+ struct smb_t2_qfi_req *pSMB = NULL;
+ struct smb_t2_qfi_rsp *pSMBr = NULL;
+ int rc = 0;
+ int bytes_returned;
+ __u16 params, byte_count;
+
+QFileInfoRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ params = 2 /* level */ + 2 /* fid */;
+ pSMB->t2.TotalDataCount = 0;
+ pSMB->t2.MaxParameterCount = cpu_to_le16(4);
+ /* BB find exact max data count below from sess structure BB */
+ pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize);
+ pSMB->t2.MaxSetupCount = 0;
+ pSMB->t2.Reserved = 0;
+ pSMB->t2.Flags = 0;
+ pSMB->t2.Timeout = 0;
+ pSMB->t2.Reserved2 = 0;
+ pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req,
+ Fid) - 4);
+ pSMB->t2.DataCount = 0;
+ pSMB->t2.DataOffset = 0;
+ pSMB->t2.SetupCount = 1;
+ pSMB->t2.Reserved3 = 0;
+ pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
+ byte_count = params + 1 /* pad */ ;
+ pSMB->t2.TotalParameterCount = cpu_to_le16(params);
+ pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount;
+ pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
+ pSMB->Pad = 0;
+ pSMB->Fid = netfid;
+ pSMB->hdr.smb_buf_length += byte_count;
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Send error in QPathInfo = %d", rc));
+ } else { /* decode response */
+ rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+ if (rc) /* BB add auto retry on EOPNOTSUPP? */
+ rc = -EIO;
+ else if (pSMBr->ByteCount < 40)
+ rc = -EIO; /* bad smb */
+ else if (pFindData) {
+ __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
+ memcpy((char *) pFindData,
+ (char *) &pSMBr->hdr.Protocol +
+ data_offset, sizeof(FILE_ALL_INFO));
+ } else
+ rc = -ENOMEM;
+ }
+ cifs_buf_release(pSMB);
+ if (rc == -EAGAIN)
+ goto QFileInfoRetry;
+ return rc;
+}
int
CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon,
@@ -3335,6 +3430,75 @@ QPathInfoRetry:
}
int
+CIFSSMBUnixQFileInfo(const int xid, struct cifsTconInfo *tcon,
+ u16 netfid, FILE_UNIX_BASIC_INFO *pFindData)
+{
+ struct smb_t2_qfi_req *pSMB = NULL;
+ struct smb_t2_qfi_rsp *pSMBr = NULL;
+ int rc = 0;
+ int bytes_returned;
+ __u16 params, byte_count;
+
+UnixQFileInfoRetry:
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
+ (void **) &pSMBr);
+ if (rc)
+ return rc;
+
+ params = 2 /* level */ + 2 /* fid */;
+ pSMB->t2.TotalDataCount = 0;
+ pSMB->t2.MaxParameterCount = cpu_to_le16(4);
+ /* BB find exact max data count below from sess structure BB */
+ pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize);
+ pSMB->t2.MaxSetupCount = 0;
+ pSMB->t2.Reserved = 0;
+ pSMB->t2.Flags = 0;
+ pSMB->t2.Timeout = 0;
+ pSMB->t2.Reserved2 = 0;
+ pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req,
+ Fid) - 4);
+ pSMB->t2.DataCount = 0;
+ pSMB->t2.DataOffset = 0;
+ pSMB->t2.SetupCount = 1;
+ pSMB->t2.Reserved3 = 0;
+ pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
+ byte_count = params + 1 /* pad */ ;
+ pSMB->t2.TotalParameterCount = cpu_to_le16(params);
+ pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount;
+ pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
+ pSMB->Pad = 0;
+ pSMB->Fid = netfid;
+ pSMB->hdr.smb_buf_length += byte_count;
+
+ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
+ (struct smb_hdr *) pSMBr, &bytes_returned, 0);
+ if (rc) {
+ cFYI(1, ("Send error in QPathInfo = %d", rc));
+ } else { /* decode response */
+ rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+
+ if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) {
+ cERROR(1, ("Malformed FILE_UNIX_BASIC_INFO response.\n"
+ "Unix Extensions can be disabled on mount "
+ "by specifying the nosfu mount option."));
+ rc = -EIO; /* bad smb */
+ } else {
+ __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
+ memcpy((char *) pFindData,
+ (char *) &pSMBr->hdr.Protocol +
+ data_offset,
+ sizeof(FILE_UNIX_BASIC_INFO));
+ }
+ }
+
+ cifs_buf_release(pSMB);
+ if (rc == -EAGAIN)
+ goto UnixQFileInfoRetry;
+
+ return rc;
+}
+
+int
CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon,
const unsigned char *searchName,
FILE_UNIX_BASIC_INFO *pFindData,
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 45eb6cba793..d9566bf8f91 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -23,6 +23,7 @@
#include <linux/string.h>
#include <linux/list.h>
#include <linux/wait.h>
+#include <linux/slab.h>
#include <linux/pagemap.h>
#include <linux/ctype.h>
#include <linux/utsname.h>
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 6ccf7262d1b..e9f7ecc2714 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -739,7 +739,7 @@ cifs_d_revalidate(struct dentry *direntry, struct nameidata *nd)
int isValid = 1;
if (direntry->d_inode) {
- if (cifs_revalidate(direntry))
+ if (cifs_revalidate_dentry(direntry))
return 0;
} else {
cFYI(1, ("neg dentry 0x%p name = %s",
diff --git a/fs/cifs/dns_resolve.c b/fs/cifs/dns_resolve.c
index 87948147d7e..6f8a0e3fb25 100644
--- a/fs/cifs/dns_resolve.c
+++ b/fs/cifs/dns_resolve.c
@@ -23,6 +23,7 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+#include <linux/slab.h>
#include <keys/user-type.h>
#include "dns_resolve.h"
#include "cifsglob.h"
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 3d8f8a96f5a..9b11a8f56f3 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -31,6 +31,7 @@
#include <linux/task_io_accounting_ops.h>
#include <linux/delay.h>
#include <linux/mount.h>
+#include <linux/slab.h>
#include <asm/div64.h>
#include "cifsfs.h"
#include "cifspdu.h"
@@ -219,8 +220,8 @@ static inline int cifs_open_inode_helper(struct inode *inode, struct file *file,
cFYI(1, ("inode unchanged on server"));
} else {
if (file->f_path.dentry->d_inode->i_mapping) {
- /* BB no need to lock inode until after invalidate
- since namei code should already have it locked? */
+ /* BB no need to lock inode until after invalidate
+ since namei code should already have it locked? */
rc = filemap_write_and_wait(file->f_path.dentry->d_inode->i_mapping);
if (rc != 0)
CIFS_I(file->f_path.dentry->d_inode)->write_behind_rc = rc;
@@ -838,8 +839,32 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
} else {
/* if rc == ERR_SHARING_VIOLATION ? */
- rc = 0; /* do not change lock type to unlock
- since range in use */
+ rc = 0;
+
+ if (lockType & LOCKING_ANDX_SHARED_LOCK) {
+ pfLock->fl_type = F_WRLCK;
+ } else {
+ rc = CIFSSMBLock(xid, tcon, netfid, length,
+ pfLock->fl_start, 0, 1,
+ lockType | LOCKING_ANDX_SHARED_LOCK,
+ 0 /* wait flag */);
+ if (rc == 0) {
+ rc = CIFSSMBLock(xid, tcon, netfid,
+ length, pfLock->fl_start, 1, 0,
+ lockType |
+ LOCKING_ANDX_SHARED_LOCK,
+ 0 /* wait flag */);
+ pfLock->fl_type = F_RDLCK;
+ if (rc != 0)
+ cERROR(1, ("Error unlocking "
+ "previously locked range %d "
+ "during test of lock", rc));
+ rc = 0;
+ } else {
+ pfLock->fl_type = F_WRLCK;
+ rc = 0;
+ }
+ }
}
FreeXid(xid);
@@ -1890,11 +1915,10 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size,
int cifs_file_mmap(struct file *file, struct vm_area_struct *vma)
{
- struct dentry *dentry = file->f_path.dentry;
int rc, xid;
xid = GetXid();
- rc = cifs_revalidate(dentry);
+ rc = cifs_revalidate_file(file);
if (rc) {
cFYI(1, ("Validation prior to mmap failed, error=%d", rc));
FreeXid(xid);
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 8bdbc818164..35ec1171621 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -20,6 +20,7 @@
*/
#include <linux/fs.h>
#include <linux/stat.h>
+#include <linux/slab.h>
#include <linux/pagemap.h>
#include <asm/div64.h>
#include "cifsfs.h"
@@ -77,6 +78,41 @@ static void cifs_set_ops(struct inode *inode, const bool is_dfs_referral)
}
}
+/* check inode attributes against fattr. If they don't match, tag the
+ * inode for cache invalidation
+ */
+static void
+cifs_revalidate_cache(struct inode *inode, struct cifs_fattr *fattr)
+{
+ struct cifsInodeInfo *cifs_i = CIFS_I(inode);
+
+ cFYI(1, ("%s: revalidating inode %llu", __func__, cifs_i->uniqueid));
+
+ if (inode->i_state & I_NEW) {
+ cFYI(1, ("%s: inode %llu is new", __func__, cifs_i->uniqueid));
+ return;
+ }
+
+ /* don't bother with revalidation if we have an oplock */
+ if (cifs_i->clientCanCacheRead) {
+ cFYI(1, ("%s: inode %llu is oplocked", __func__,
+ cifs_i->uniqueid));
+ return;
+ }
+
+ /* revalidate if mtime or size have changed */
+ if (timespec_equal(&inode->i_mtime, &fattr->cf_mtime) &&
+ cifs_i->server_eof == fattr->cf_eof) {
+ cFYI(1, ("%s: inode %llu is unchanged", __func__,
+ cifs_i->uniqueid));
+ return;
+ }
+
+ cFYI(1, ("%s: invalidating inode %llu mapping", __func__,
+ cifs_i->uniqueid));
+ cifs_i->invalid_mapping = true;
+}
+
/* populate an inode with info from a cifs_fattr struct */
void
cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr)
@@ -85,6 +121,8 @@ cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr)
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
unsigned long oldtime = cifs_i->time;
+ cifs_revalidate_cache(inode, fattr);
+
inode->i_atime = fattr->cf_atime;
inode->i_mtime = fattr->cf_mtime;
inode->i_ctime = fattr->cf_ctime;
@@ -231,6 +269,31 @@ cifs_create_dfs_fattr(struct cifs_fattr *fattr, struct super_block *sb)
fattr->cf_flags |= CIFS_FATTR_DFS_REFERRAL;
}
+int cifs_get_file_info_unix(struct file *filp)
+{
+ int rc;
+ int xid;
+ FILE_UNIX_BASIC_INFO find_data;
+ struct cifs_fattr fattr;
+ struct inode *inode = filp->f_path.dentry->d_inode;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ struct cifsTconInfo *tcon = cifs_sb->tcon;
+ struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data;
+
+ xid = GetXid();
+ rc = CIFSSMBUnixQFileInfo(xid, tcon, cfile->netfid, &find_data);
+ if (!rc) {
+ cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb);
+ } else if (rc == -EREMOTE) {
+ cifs_create_dfs_fattr(&fattr, inode->i_sb);
+ rc = 0;
+ }
+
+ cifs_fattr_to_inode(inode, &fattr);
+ FreeXid(xid);
+ return rc;
+}
+
int cifs_get_inode_info_unix(struct inode **pinode,
const unsigned char *full_path,
struct super_block *sb, int xid)
@@ -432,6 +495,47 @@ cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
fattr->cf_gid = cifs_sb->mnt_gid;
}
+int cifs_get_file_info(struct file *filp)
+{
+ int rc;
+ int xid;
+ FILE_ALL_INFO find_data;
+ struct cifs_fattr fattr;
+ struct inode *inode = filp->f_path.dentry->d_inode;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ struct cifsTconInfo *tcon = cifs_sb->tcon;
+ struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data;
+
+ xid = GetXid();
+ rc = CIFSSMBQFileInfo(xid, tcon, cfile->netfid, &find_data);
+ if (rc == -EOPNOTSUPP || rc == -EINVAL) {
+ /*
+ * FIXME: legacy server -- fall back to path-based call?
+ * for now, just skip revalidating and mark inode for
+ * immediate reval.
+ */
+ rc = 0;
+ CIFS_I(inode)->time = 0;
+ goto cgfi_exit;
+ } else if (rc == -EREMOTE) {
+ cifs_create_dfs_fattr(&fattr, inode->i_sb);
+ rc = 0;
+ } else if (rc)
+ goto cgfi_exit;
+
+ /*
+ * don't bother with SFU junk here -- just mark inode as needing
+ * revalidation.
+ */
+ cifs_all_info_to_fattr(&fattr, &find_data, cifs_sb, false);
+ fattr.cf_uniqueid = CIFS_I(inode)->uniqueid;
+ fattr.cf_flags |= CIFS_FATTR_NEED_REVAL;
+ cifs_fattr_to_inode(inode, &fattr);
+cgfi_exit:
+ FreeXid(xid);
+ return rc;
+}
+
int cifs_get_inode_info(struct inode **pinode,
const unsigned char *full_path, FILE_ALL_INFO *pfindData,
struct super_block *sb, int xid, const __u16 *pfid)
@@ -1389,135 +1493,103 @@ cifs_rename_exit:
return rc;
}
-int cifs_revalidate(struct dentry *direntry)
+static bool
+cifs_inode_needs_reval(struct inode *inode)
{
- int xid;
- int rc = 0, wbrc = 0;
- char *full_path;
- struct cifs_sb_info *cifs_sb;
- struct cifsInodeInfo *cifsInode;
- loff_t local_size;
- struct timespec local_mtime;
- bool invalidate_inode = false;
+ struct cifsInodeInfo *cifs_i = CIFS_I(inode);
- if (direntry->d_inode == NULL)
- return -ENOENT;
+ if (cifs_i->clientCanCacheRead)
+ return false;
- cifsInode = CIFS_I(direntry->d_inode);
+ if (!lookupCacheEnabled)
+ return true;
- if (cifsInode == NULL)
- return -ENOENT;
+ if (cifs_i->time == 0)
+ return true;
- /* no sense revalidating inode info on file that no one can write */
- if (CIFS_I(direntry->d_inode)->clientCanCacheRead)
- return rc;
+ /* FIXME: the actimeo should be tunable */
+ if (time_after_eq(jiffies, cifs_i->time + HZ))
+ return true;
+
+ return false;
+}
+
+/* check invalid_mapping flag and zap the cache if it's set */
+static void
+cifs_invalidate_mapping(struct inode *inode)
+{
+ int rc;
+ struct cifsInodeInfo *cifs_i = CIFS_I(inode);
+
+ cifs_i->invalid_mapping = false;
+
+ /* write back any cached data */
+ if (inode->i_mapping && inode->i_mapping->nrpages != 0) {
+ rc = filemap_write_and_wait(inode->i_mapping);
+ if (rc)
+ cifs_i->write_behind_rc = rc;
+ }
+ invalidate_remote_inode(inode);
+}
+
+int cifs_revalidate_file(struct file *filp)
+{
+ int rc = 0;
+ struct inode *inode = filp->f_path.dentry->d_inode;
+
+ if (!cifs_inode_needs_reval(inode))
+ goto check_inval;
+
+ if (CIFS_SB(inode->i_sb)->tcon->unix_ext)
+ rc = cifs_get_file_info_unix(filp);
+ else
+ rc = cifs_get_file_info(filp);
+
+check_inval:
+ if (CIFS_I(inode)->invalid_mapping)
+ cifs_invalidate_mapping(inode);
+
+ return rc;
+}
+
+/* revalidate a dentry's inode attributes */
+int cifs_revalidate_dentry(struct dentry *dentry)
+{
+ int xid;
+ int rc = 0;
+ char *full_path = NULL;
+ struct inode *inode = dentry->d_inode;
+ struct super_block *sb = dentry->d_sb;
+
+ if (inode == NULL)
+ return -ENOENT;
xid = GetXid();
- cifs_sb = CIFS_SB(direntry->d_sb);
+ if (!cifs_inode_needs_reval(inode))
+ goto check_inval;
/* can not safely grab the rename sem here if rename calls revalidate
since that would deadlock */
- full_path = build_path_from_dentry(direntry);
+ full_path = build_path_from_dentry(dentry);
if (full_path == NULL) {
rc = -ENOMEM;
- FreeXid(xid);
- return rc;
- }
- cFYI(1, ("Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld "
- "jiffies %ld", full_path, direntry->d_inode,
- direntry->d_inode->i_count.counter, direntry,
- direntry->d_time, jiffies));
-
- if (cifsInode->time == 0) {
- /* was set to zero previously to force revalidate */
- } else if (time_before(jiffies, cifsInode->time + HZ) &&
- lookupCacheEnabled) {
- if ((S_ISREG(direntry->d_inode->i_mode) == 0) ||
- (direntry->d_inode->i_nlink == 1)) {
- kfree(full_path);
- FreeXid(xid);
- return rc;
- } else {
- cFYI(1, ("Have to revalidate file due to hardlinks"));
- }
- }
-
- /* save mtime and size */
- local_mtime = direntry->d_inode->i_mtime;
- local_size = direntry->d_inode->i_size;
-
- if (cifs_sb->tcon->unix_ext) {
- rc = cifs_get_inode_info_unix(&direntry->d_inode, full_path,
- direntry->d_sb, xid);
- if (rc) {
- cFYI(1, ("error on getting revalidate info %d", rc));
-/* if (rc != -ENOENT)
- rc = 0; */ /* BB should we cache info on
- certain errors? */
- }
- } else {
- rc = cifs_get_inode_info(&direntry->d_inode, full_path, NULL,
- direntry->d_sb, xid, NULL);
- if (rc) {
- cFYI(1, ("error on getting revalidate info %d", rc));
-/* if (rc != -ENOENT)
- rc = 0; */ /* BB should we cache info on
- certain errors? */
- }
+ goto check_inval;
}
- /* should we remap certain errors, access denied?, to zero */
- /* if not oplocked, we invalidate inode pages if mtime or file size
- had changed on server */
+ cFYI(1, ("Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld "
+ "jiffies %ld", full_path, inode, inode->i_count.counter,
+ dentry, dentry->d_time, jiffies));
- if (timespec_equal(&local_mtime, &direntry->d_inode->i_mtime) &&
- (local_size == direntry->d_inode->i_size)) {
- cFYI(1, ("cifs_revalidate - inode unchanged"));
- } else {
- /* file may have changed on server */
- if (cifsInode->clientCanCacheRead) {
- /* no need to invalidate inode pages since we were the
- only ones who could have modified the file and the
- server copy is staler than ours */
- } else {
- invalidate_inode = true;
- }
- }
+ if (CIFS_SB(sb)->tcon->unix_ext)
+ rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid);
+ else
+ rc = cifs_get_inode_info(&inode, full_path, NULL, sb,
+ xid, NULL);
- /* can not grab this sem since kernel filesys locking documentation
- indicates i_mutex may be taken by the kernel on lookup and rename
- which could deadlock if we grab the i_mutex here as well */
-/* mutex_lock(&direntry->d_inode->i_mutex);*/
- /* need to write out dirty pages here */
- if (direntry->d_inode->i_mapping) {
- /* do we need to lock inode until after invalidate completes
- below? */
- wbrc = filemap_fdatawrite(direntry->d_inode->i_mapping);
- if (wbrc)
- CIFS_I(direntry->d_inode)->write_behind_rc = wbrc;
- }
- if (invalidate_inode) {
- /* shrink_dcache not necessary now that cifs dentry ops
- are exported for negative dentries */
-/* if (S_ISDIR(direntry->d_inode->i_mode))
- shrink_dcache_parent(direntry); */
- if (S_ISREG(direntry->d_inode->i_mode)) {
- if (direntry->d_inode->i_mapping) {
- wbrc = filemap_fdatawait(direntry->d_inode->i_mapping);
- if (wbrc)
- CIFS_I(direntry->d_inode)->write_behind_rc = wbrc;
- }
- /* may eventually have to do this for open files too */
- if (list_empty(&(cifsInode->openFileList))) {
- /* changed on server - flush read ahead pages */
- cFYI(1, ("Invalidating read ahead data on "
- "closed file"));
- invalidate_remote_inode(direntry->d_inode);
- }
- }
- }
-/* mutex_unlock(&direntry->d_inode->i_mutex); */
+check_inval:
+ if (CIFS_I(inode)->invalid_mapping)
+ cifs_invalidate_mapping(inode);
kfree(full_path);
FreeXid(xid);
@@ -1527,7 +1599,7 @@ int cifs_revalidate(struct dentry *direntry)
int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
struct kstat *stat)
{
- int err = cifs_revalidate(dentry);
+ int err = cifs_revalidate_dentry(dentry);
if (!err) {
generic_fillattr(dentry->d_inode, stat);
stat->blksize = CIFS_MAX_MSGSIZE;
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index fc1e0487eae..c1a9d4236a8 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -20,6 +20,7 @@
*/
#include <linux/fs.h>
#include <linux/stat.h>
+#include <linux/slab.h>
#include <linux/namei.h>
#include "cifsfs.h"
#include "cifspdu.h"
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index c343b14ba2d..18e0bc1fb59 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -22,6 +22,7 @@
*/
#include <linux/fs.h>
#include <linux/pagemap.h>
+#include <linux/slab.h>
#include <linux/stat.h>
#include "cifspdu.h"
#include "cifsglob.h"
diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
index aaa9c1c5a5b..7c3fd7463f4 100644
--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -29,6 +29,7 @@
#include "ntlmssp.h"
#include "nterr.h"
#include <linux/utsname.h>
+#include <linux/slab.h>
#include "cifs_spnego.h"
extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8,
diff --git a/fs/cifs/smbencrypt.c b/fs/cifs/smbencrypt.c
index 93fb09a99c6..192ea51af20 100644
--- a/fs/cifs/smbencrypt.c
+++ b/fs/cifs/smbencrypt.c
@@ -24,6 +24,7 @@
*/
#include <linux/module.h>
+#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/string.h>
#include <linux/kernel.h>
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 07b8e71544e..ad081fe7eb1 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -22,6 +22,7 @@
#include <linux/fs.h>
#include <linux/list.h>
+#include <linux/gfp.h>
#include <linux/wait.h>
#include <linux/net.h>
#include <linux/delay.h>
diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c
index 3e2ef0de120..f555ce077d4 100644
--- a/fs/cifs/xattr.c
+++ b/fs/cifs/xattr.c
@@ -21,6 +21,7 @@
#include <linux/fs.h>
#include <linux/posix_acl_xattr.h>
+#include <linux/slab.h>
#include "cifsfs.h"
#include "cifspdu.h"
#include "cifsglob.h"
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-18 20:06:03 +0000