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Diffstat (limited to 'fs/cifs/inode.c')
-rw-r--r--fs/cifs/inode.c399
1 files changed, 151 insertions, 248 deletions
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index b1a4a65eaa08..24eb4d392155 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -29,6 +29,130 @@
#include "cifs_debug.h"
#include "cifs_fs_sb.h"
+
+static void cifs_set_ops(struct inode *inode)
+{
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+
+ switch (inode->i_mode & S_IFMT) {
+ case S_IFREG:
+ inode->i_op = &cifs_file_inode_ops;
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
+ inode->i_fop = &cifs_file_direct_nobrl_ops;
+ else
+ inode->i_fop = &cifs_file_direct_ops;
+ } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
+ inode->i_fop = &cifs_file_nobrl_ops;
+ else { /* not direct, send byte range locks */
+ inode->i_fop = &cifs_file_ops;
+ }
+
+
+ /* check if server can support readpages */
+ if (cifs_sb->tcon->ses->server->maxBuf <
+ PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
+ inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
+ else
+ inode->i_data.a_ops = &cifs_addr_ops;
+ break;
+ case S_IFDIR:
+ inode->i_op = &cifs_dir_inode_ops;
+ inode->i_fop = &cifs_dir_ops;
+ break;
+ case S_IFLNK:
+ inode->i_op = &cifs_symlink_inode_ops;
+ break;
+ default:
+ init_special_inode(inode, inode->i_mode, inode->i_rdev);
+ break;
+ }
+}
+
+static void cifs_unix_info_to_inode(struct inode *inode,
+ FILE_UNIX_BASIC_INFO *info, int force_uid_gid)
+{
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ struct cifsInodeInfo *cifsInfo = CIFS_I(inode);
+ __u64 num_of_bytes = le64_to_cpu(info->NumOfBytes);
+ __u64 end_of_file = le64_to_cpu(info->EndOfFile);
+
+ inode->i_atime = cifs_NTtimeToUnix(le64_to_cpu(info->LastAccessTime));
+ inode->i_mtime =
+ cifs_NTtimeToUnix(le64_to_cpu(info->LastModificationTime));
+ inode->i_ctime = cifs_NTtimeToUnix(le64_to_cpu(info->LastStatusChange));
+ inode->i_mode = le64_to_cpu(info->Permissions);
+
+ /*
+ * Since we set the inode type below we need to mask off
+ * to avoid strange results if bits set above.
+ */
+ inode->i_mode &= ~S_IFMT;
+ switch (le32_to_cpu(info->Type)) {
+ case UNIX_FILE:
+ inode->i_mode |= S_IFREG;
+ break;
+ case UNIX_SYMLINK:
+ inode->i_mode |= S_IFLNK;
+ break;
+ case UNIX_DIR:
+ inode->i_mode |= S_IFDIR;
+ break;
+ case UNIX_CHARDEV:
+ inode->i_mode |= S_IFCHR;
+ inode->i_rdev = MKDEV(le64_to_cpu(info->DevMajor),
+ le64_to_cpu(info->DevMinor) & MINORMASK);
+ break;
+ case UNIX_BLOCKDEV:
+ inode->i_mode |= S_IFBLK;
+ inode->i_rdev = MKDEV(le64_to_cpu(info->DevMajor),
+ le64_to_cpu(info->DevMinor) & MINORMASK);
+ break;
+ case UNIX_FIFO:
+ inode->i_mode |= S_IFIFO;
+ break;
+ case UNIX_SOCKET:
+ inode->i_mode |= S_IFSOCK;
+ break;
+ default:
+ /* safest to call it a file if we do not know */
+ inode->i_mode |= S_IFREG;
+ cFYI(1, ("unknown type %d", le32_to_cpu(info->Type)));
+ break;
+ }
+
+ if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) &&
+ !force_uid_gid)
+ inode->i_uid = cifs_sb->mnt_uid;
+ else
+ inode->i_uid = le64_to_cpu(info->Uid);
+
+ if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) &&
+ !force_uid_gid)
+ inode->i_gid = cifs_sb->mnt_gid;
+ else
+ inode->i_gid = le64_to_cpu(info->Gid);
+
+ inode->i_nlink = le64_to_cpu(info->Nlinks);
+
+ spin_lock(&inode->i_lock);
+ if (is_size_safe_to_change(cifsInfo, end_of_file)) {
+ /*
+ * We can not safely change the file size here if the client
+ * is writing to it due to potential races.
+ */
+ i_size_write(inode, end_of_file);
+
+ /*
+ * i_blocks is not related to (i_size / i_blksize),
+ * but instead 512 byte (2**9) size is required for
+ * calculating num blocks.
+ */
+ inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
+ }
+ spin_unlock(&inode->i_lock);
+}
+
int cifs_get_inode_info_unix(struct inode **pinode,
const unsigned char *search_path, struct super_block *sb, int xid)
{
@@ -74,7 +198,6 @@ int cifs_get_inode_info_unix(struct inode **pinode,
}
} else {
struct cifsInodeInfo *cifsInfo;
- __u32 type = le32_to_cpu(findData.Type);
__u64 num_of_bytes = le64_to_cpu(findData.NumOfBytes);
__u64 end_of_file = le64_to_cpu(findData.EndOfFile);
@@ -105,112 +228,16 @@ int cifs_get_inode_info_unix(struct inode **pinode,
/* this is ok to set on every inode revalidate */
atomic_set(&cifsInfo->inUse, 1);
- inode->i_atime =
- cifs_NTtimeToUnix(le64_to_cpu(findData.LastAccessTime));
- inode->i_mtime =
- cifs_NTtimeToUnix(le64_to_cpu
- (findData.LastModificationTime));
- inode->i_ctime =
- cifs_NTtimeToUnix(le64_to_cpu(findData.LastStatusChange));
- inode->i_mode = le64_to_cpu(findData.Permissions);
- /* since we set the inode type below we need to mask off
- to avoid strange results if bits set above */
- inode->i_mode &= ~S_IFMT;
- if (type == UNIX_FILE) {
- inode->i_mode |= S_IFREG;
- } else if (type == UNIX_SYMLINK) {
- inode->i_mode |= S_IFLNK;
- } else if (type == UNIX_DIR) {
- inode->i_mode |= S_IFDIR;
- } else if (type == UNIX_CHARDEV) {
- inode->i_mode |= S_IFCHR;
- inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor),
- le64_to_cpu(findData.DevMinor) & MINORMASK);
- } else if (type == UNIX_BLOCKDEV) {
- inode->i_mode |= S_IFBLK;
- inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor),
- le64_to_cpu(findData.DevMinor) & MINORMASK);
- } else if (type == UNIX_FIFO) {
- inode->i_mode |= S_IFIFO;
- } else if (type == UNIX_SOCKET) {
- inode->i_mode |= S_IFSOCK;
- } else {
- /* safest to call it a file if we do not know */
- inode->i_mode |= S_IFREG;
- cFYI(1, ("unknown type %d", type));
- }
+ cifs_unix_info_to_inode(inode, &findData, 0);
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)
- inode->i_uid = cifs_sb->mnt_uid;
- else
- inode->i_uid = le64_to_cpu(findData.Uid);
-
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)
- inode->i_gid = cifs_sb->mnt_gid;
- else
- inode->i_gid = le64_to_cpu(findData.Gid);
-
- inode->i_nlink = le64_to_cpu(findData.Nlinks);
-
- spin_lock(&inode->i_lock);
- if (is_size_safe_to_change(cifsInfo, end_of_file)) {
- /* can not safely change the file size here if the
- client is writing to it due to potential races */
- i_size_write(inode, end_of_file);
-
- /* blksize needs to be multiple of two. So safer to default to
- blksize and blkbits set in superblock so 2**blkbits and blksize
- will match rather than setting to:
- (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/
-
- /* This seems incredibly stupid but it turns out that i_blocks
- is not related to (i_size / i_blksize), instead 512 byte size
- is required for calculating num blocks */
-
- /* 512 bytes (2**9) is the fake blocksize that must be used */
- /* for this calculation */
- inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
- }
- spin_unlock(&inode->i_lock);
if (num_of_bytes < end_of_file)
cFYI(1, ("allocation size less than end of file"));
cFYI(1, ("Size %ld and blocks %llu",
(unsigned long) inode->i_size,
(unsigned long long)inode->i_blocks));
- if (S_ISREG(inode->i_mode)) {
- cFYI(1, ("File inode"));
- inode->i_op = &cifs_file_inode_ops;
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
- inode->i_fop =
- &cifs_file_direct_nobrl_ops;
- else
- inode->i_fop = &cifs_file_direct_ops;
- } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
- inode->i_fop = &cifs_file_nobrl_ops;
- else /* not direct, send byte range locks */
- inode->i_fop = &cifs_file_ops;
-
- /* check if server can support readpages */
- if (pTcon->ses->server->maxBuf <
- PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
- inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
- else
- inode->i_data.a_ops = &cifs_addr_ops;
- } else if (S_ISDIR(inode->i_mode)) {
- cFYI(1, ("Directory inode"));
- inode->i_op = &cifs_dir_inode_ops;
- inode->i_fop = &cifs_dir_ops;
- } else if (S_ISLNK(inode->i_mode)) {
- cFYI(1, ("Symbolic Link inode"));
- inode->i_op = &cifs_symlink_inode_ops;
- /* tmp_inode->i_fop = */ /* do not need to set to anything */
- } else {
- cFYI(1, ("Init special inode"));
- init_special_inode(inode, inode->i_mode,
- inode->i_rdev);
- }
+
+ cifs_set_ops(inode);
}
return rc;
}
@@ -490,9 +517,9 @@ int cifs_get_inode_info(struct inode **pinode,
if (decode_sfu_inode(inode,
le64_to_cpu(pfindData->EndOfFile),
search_path,
- cifs_sb, xid)) {
+ cifs_sb, xid))
cFYI(1, ("Unrecognized sfu inode type"));
- }
+
cFYI(1, ("sfu mode 0%o", inode->i_mode));
} else {
inode->i_mode |= S_IFREG;
@@ -546,36 +573,7 @@ int cifs_get_inode_info(struct inode **pinode,
atomic_set(&cifsInfo->inUse, 1);
}
- if (S_ISREG(inode->i_mode)) {
- cFYI(1, ("File inode"));
- inode->i_op = &cifs_file_inode_ops;
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
- inode->i_fop =
- &cifs_file_direct_nobrl_ops;
- else
- inode->i_fop = &cifs_file_direct_ops;
- } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
- inode->i_fop = &cifs_file_nobrl_ops;
- else /* not direct, send byte range locks */
- inode->i_fop = &cifs_file_ops;
-
- if (pTcon->ses->server->maxBuf <
- PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
- inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
- else
- inode->i_data.a_ops = &cifs_addr_ops;
- } else if (S_ISDIR(inode->i_mode)) {
- cFYI(1, ("Directory inode"));
- inode->i_op = &cifs_dir_inode_ops;
- inode->i_fop = &cifs_dir_ops;
- } else if (S_ISLNK(inode->i_mode)) {
- cFYI(1, ("Symbolic Link inode"));
- inode->i_op = &cifs_symlink_inode_ops;
- } else {
- init_special_inode(inode, inode->i_mode,
- inode->i_rdev);
- }
+ cifs_set_ops(inode);
}
kfree(buf);
return rc;
@@ -792,17 +790,12 @@ psx_del_no_retry:
}
static void posix_fill_in_inode(struct inode *tmp_inode,
- FILE_UNIX_BASIC_INFO *pData, int *pobject_type, int isNewInode)
+ FILE_UNIX_BASIC_INFO *pData, int isNewInode)
{
+ struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode);
loff_t local_size;
struct timespec local_mtime;
- struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode);
- struct cifs_sb_info *cifs_sb = CIFS_SB(tmp_inode->i_sb);
-
- __u32 type = le32_to_cpu(pData->Type);
- __u64 num_of_bytes = le64_to_cpu(pData->NumOfBytes);
- __u64 end_of_file = le64_to_cpu(pData->EndOfFile);
cifsInfo->time = jiffies;
atomic_inc(&cifsInfo->inUse);
@@ -810,115 +803,27 @@ static void posix_fill_in_inode(struct inode *tmp_inode,
local_mtime = tmp_inode->i_mtime;
local_size = tmp_inode->i_size;
- tmp_inode->i_atime =
- cifs_NTtimeToUnix(le64_to_cpu(pData->LastAccessTime));
- tmp_inode->i_mtime =
- cifs_NTtimeToUnix(le64_to_cpu(pData->LastModificationTime));
- tmp_inode->i_ctime =
- cifs_NTtimeToUnix(le64_to_cpu(pData->LastStatusChange));
-
- tmp_inode->i_mode = le64_to_cpu(pData->Permissions);
- /* since we set the inode type below we need to mask off type
- to avoid strange results if bits above were corrupt */
- tmp_inode->i_mode &= ~S_IFMT;
- if (type == UNIX_FILE) {
- *pobject_type = DT_REG;
- tmp_inode->i_mode |= S_IFREG;
- } else if (type == UNIX_SYMLINK) {
- *pobject_type = DT_LNK;
- tmp_inode->i_mode |= S_IFLNK;
- } else if (type == UNIX_DIR) {
- *pobject_type = DT_DIR;
- tmp_inode->i_mode |= S_IFDIR;
- } else if (type == UNIX_CHARDEV) {
- *pobject_type = DT_CHR;
- tmp_inode->i_mode |= S_IFCHR;
- tmp_inode->i_rdev = MKDEV(le64_to_cpu(pData->DevMajor),
- le64_to_cpu(pData->DevMinor) & MINORMASK);
- } else if (type == UNIX_BLOCKDEV) {
- *pobject_type = DT_BLK;
- tmp_inode->i_mode |= S_IFBLK;
- tmp_inode->i_rdev = MKDEV(le64_to_cpu(pData->DevMajor),
- le64_to_cpu(pData->DevMinor) & MINORMASK);
- } else if (type == UNIX_FIFO) {
- *pobject_type = DT_FIFO;
- tmp_inode->i_mode |= S_IFIFO;
- } else if (type == UNIX_SOCKET) {
- *pobject_type = DT_SOCK;
- tmp_inode->i_mode |= S_IFSOCK;
- } else {
- /* safest to just call it a file */
- *pobject_type = DT_REG;
- tmp_inode->i_mode |= S_IFREG;
- cFYI(1, ("unknown inode type %d", type));
- }
-
-#ifdef CONFIG_CIFS_DEBUG2
- cFYI(1, ("object type: %d", type));
-#endif
- tmp_inode->i_uid = le64_to_cpu(pData->Uid);
- tmp_inode->i_gid = le64_to_cpu(pData->Gid);
- tmp_inode->i_nlink = le64_to_cpu(pData->Nlinks);
-
- spin_lock(&tmp_inode->i_lock);
- if (is_size_safe_to_change(cifsInfo, end_of_file)) {
- /* can not safely change the file size here if the
- client is writing to it due to potential races */
- i_size_write(tmp_inode, end_of_file);
+ cifs_unix_info_to_inode(tmp_inode, pData, 1);
+ cifs_set_ops(tmp_inode);
- /* 512 bytes (2**9) is the fake blocksize that must be used */
- /* for this calculation, not the real blocksize */
- tmp_inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
- }
- spin_unlock(&tmp_inode->i_lock);
-
- if (S_ISREG(tmp_inode->i_mode)) {
- cFYI(1, ("File inode"));
- tmp_inode->i_op = &cifs_file_inode_ops;
-
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
- tmp_inode->i_fop = &cifs_file_direct_nobrl_ops;
- else
- tmp_inode->i_fop = &cifs_file_direct_ops;
+ if (!S_ISREG(tmp_inode->i_mode))
+ return;
- } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
- tmp_inode->i_fop = &cifs_file_nobrl_ops;
- else
- tmp_inode->i_fop = &cifs_file_ops;
-
- if ((cifs_sb->tcon) && (cifs_sb->tcon->ses) &&
- (cifs_sb->tcon->ses->server->maxBuf <
- PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE))
- tmp_inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
- else
- tmp_inode->i_data.a_ops = &cifs_addr_ops;
-
- if (isNewInode)
- return; /* No sense invalidating pages for new inode
- since we we have not started caching
- readahead file data yet */
+ /*
+ * No sense invalidating pages for new inode
+ * since we we have not started caching
+ * readahead file data yet.
+ */
+ if (isNewInode)
+ return;
- if (timespec_equal(&tmp_inode->i_mtime, &local_mtime) &&
- (local_size == tmp_inode->i_size)) {
- cFYI(1, ("inode exists but unchanged"));
- } else {
- /* file may have changed on server */
- cFYI(1, ("invalidate inode, readdir detected change"));
- invalidate_remote_inode(tmp_inode);
- }
- } else if (S_ISDIR(tmp_inode->i_mode)) {
- cFYI(1, ("Directory inode"));
- tmp_inode->i_op = &cifs_dir_inode_ops;
- tmp_inode->i_fop = &cifs_dir_ops;
- } else if (S_ISLNK(tmp_inode->i_mode)) {
- cFYI(1, ("Symbolic Link inode"));
- tmp_inode->i_op = &cifs_symlink_inode_ops;
-/* tmp_inode->i_fop = *//* do not need to set to anything */
+ if (timespec_equal(&tmp_inode->i_mtime, &local_mtime) &&
+ (local_size == tmp_inode->i_size)) {
+ cFYI(1, ("inode exists but unchanged"));
} else {
- cFYI(1, ("Special inode"));
- init_special_inode(tmp_inode, tmp_inode->i_mode,
- tmp_inode->i_rdev);
+ /* file may have changed on server */
+ cFYI(1, ("invalidate inode, readdir detected change"));
+ invalidate_remote_inode(tmp_inode);
}
}
@@ -968,7 +873,6 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
cFYI(1, ("posix mkdir returned 0x%x", rc));
d_drop(direntry);
} else {
- int obj_type;
if (pInfo->Type == cpu_to_le32(-1)) {
/* no return info, go query for it */
kfree(pInfo);
@@ -1004,7 +908,7 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
/* we already checked in POSIXCreate whether
frame was long enough */
posix_fill_in_inode(direntry->d_inode,
- pInfo, &obj_type, 1 /* NewInode */);
+ pInfo, 1 /* NewInode */);
#ifdef CONFIG_CIFS_DEBUG2
cFYI(1, ("instantiated dentry %p %s to inode %p",
direntry, direntry->d_name.name, newinode));
@@ -1214,9 +1118,8 @@ int cifs_rename(struct inode *source_inode, struct dentry *source_direntry,
} /* if we can not get memory just leave rc as EEXIST */
}
- if (rc) {
+ if (rc)
cFYI(1, ("rename rc %d", rc));
- }
if ((rc == -EIO) || (rc == -EEXIST)) {
int oplock = FALSE;