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-rw-r--r--fs/cifs/dir.c160
1 files changed, 106 insertions, 54 deletions
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 54dce78fbb7..11431ed72a7 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -129,12 +129,62 @@ cifs_bp_rename_retry:
return full_path;
}
+static void
+cifs_fill_fileinfo(struct inode *newinode, __u16 fileHandle,
+ struct cifsTconInfo *tcon, bool write_only)
+{
+ int oplock = 0;
+ struct cifsFileInfo *pCifsFile;
+ struct cifsInodeInfo *pCifsInode;
+
+ pCifsFile = kzalloc(sizeof(struct cifsFileInfo), GFP_KERNEL);
+
+ if (pCifsFile == NULL)
+ return;
+
+ if (oplockEnabled)
+ oplock = REQ_OPLOCK;
+
+ pCifsFile->netfid = fileHandle;
+ pCifsFile->pid = current->tgid;
+ pCifsFile->pInode = newinode;
+ pCifsFile->invalidHandle = false;
+ pCifsFile->closePend = false;
+ mutex_init(&pCifsFile->fh_mutex);
+ mutex_init(&pCifsFile->lock_mutex);
+ INIT_LIST_HEAD(&pCifsFile->llist);
+ atomic_set(&pCifsFile->wrtPending, 0);
+
+ /* set the following in open now
+ pCifsFile->pfile = file; */
+ write_lock(&GlobalSMBSeslock);
+ list_add(&pCifsFile->tlist, &tcon->openFileList);
+ pCifsInode = CIFS_I(newinode);
+ if (pCifsInode) {
+ /* if readable file instance put first in list*/
+ if (write_only)
+ list_add_tail(&pCifsFile->flist,
+ &pCifsInode->openFileList);
+ else
+ list_add(&pCifsFile->flist, &pCifsInode->openFileList);
+
+ if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
+ pCifsInode->clientCanCacheAll = true;
+ pCifsInode->clientCanCacheRead = true;
+ cFYI(1, ("Exclusive Oplock inode %p", newinode));
+ } else if ((oplock & 0xF) == OPLOCK_READ)
+ pCifsInode->clientCanCacheRead = true;
+ }
+ write_unlock(&GlobalSMBSeslock);
+}
+
int cifs_posix_open(char *full_path, struct inode **pinode,
struct super_block *sb, int mode, int oflags,
int *poplock, __u16 *pnetfid, int xid)
{
int rc;
__u32 oplock;
+ bool write_only = false;
FILE_UNIX_BASIC_INFO *presp_data;
__u32 posix_flags = 0;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
@@ -172,6 +222,8 @@ int cifs_posix_open(char *full_path, struct inode **pinode,
if (oflags & O_DIRECT)
posix_flags |= SMB_O_DIRECT;
+ if (!(oflags & FMODE_READ))
+ write_only = true;
rc = CIFSPOSIXCreate(xid, cifs_sb->tcon, posix_flags, mode,
pnetfid, presp_data, &oplock, full_path,
@@ -187,8 +239,10 @@ int cifs_posix_open(char *full_path, struct inode **pinode,
if (!pinode)
goto posix_open_ret; /* caller does not need info */
- if (*pinode == NULL)
- *pinode = cifs_new_inode(sb, &presp_data->UniqueId);
+ if (*pinode == NULL) {
+ __u64 unique_id = le64_to_cpu(presp_data->UniqueId);
+ *pinode = cifs_new_inode(sb, &unique_id);
+ }
/* else an inode was passed in. Update its info, don't create one */
/* We do not need to close the file if new_inode fails since
@@ -198,6 +252,8 @@ int cifs_posix_open(char *full_path, struct inode **pinode,
posix_fill_in_inode(*pinode, presp_data, 1);
+ cifs_fill_fileinfo(*pinode, *pnetfid, cifs_sb->tcon, write_only);
+
posix_open_ret:
kfree(presp_data);
return rc;
@@ -225,6 +281,7 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
int create_options = CREATE_NOT_DIR;
int oplock = 0;
int oflags;
+ bool posix_create = false;
/*
* BB below access is probably too much for mknod to request
* but we have to do query and setpathinfo so requesting
@@ -239,7 +296,6 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
char *full_path = NULL;
FILE_ALL_INFO *buf = NULL;
struct inode *newinode = NULL;
- struct cifsInodeInfo *pCifsInode;
int disposition = FILE_OVERWRITE_IF;
bool write_only = false;
@@ -273,11 +329,13 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
negotation. EREMOTE indicates DFS junction, which is not
handled in posix open */
- if ((rc == 0) && (newinode == NULL))
- goto cifs_create_get_file_info; /* query inode info */
- else if (rc == 0) /* success, no need to query */
- goto cifs_create_set_dentry;
- else if ((rc != -EIO) && (rc != -EREMOTE) &&
+ if (rc == 0) {
+ posix_create = true;
+ if (newinode == NULL) /* query inode info */
+ goto cifs_create_get_file_info;
+ else /* success, no need to query */
+ goto cifs_create_set_dentry;
+ } else if ((rc != -EIO) && (rc != -EREMOTE) &&
(rc != -EOPNOTSUPP)) /* path not found or net err */
goto cifs_create_out;
/* else fallthrough to retry, using older open call, this is
@@ -409,45 +467,9 @@ cifs_create_set_dentry:
if ((nd == NULL) || (!(nd->flags & LOOKUP_OPEN))) {
/* mknod case - do not leave file open */
CIFSSMBClose(xid, tcon, fileHandle);
- } else if (newinode) {
- struct cifsFileInfo *pCifsFile =
- kzalloc(sizeof(struct cifsFileInfo), GFP_KERNEL);
-
- if (pCifsFile == NULL)
- goto cifs_create_out;
- pCifsFile->netfid = fileHandle;
- pCifsFile->pid = current->tgid;
- pCifsFile->pInode = newinode;
- pCifsFile->invalidHandle = false;
- pCifsFile->closePend = false;
- init_MUTEX(&pCifsFile->fh_sem);
- mutex_init(&pCifsFile->lock_mutex);
- INIT_LIST_HEAD(&pCifsFile->llist);
- atomic_set(&pCifsFile->wrtPending, 0);
-
- /* set the following in open now
- pCifsFile->pfile = file; */
- write_lock(&GlobalSMBSeslock);
- list_add(&pCifsFile->tlist, &tcon->openFileList);
- pCifsInode = CIFS_I(newinode);
- if (pCifsInode) {
- /* if readable file instance put first in list*/
- if (write_only) {
- list_add_tail(&pCifsFile->flist,
- &pCifsInode->openFileList);
- } else {
- list_add(&pCifsFile->flist,
- &pCifsInode->openFileList);
- }
- if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
- pCifsInode->clientCanCacheAll = true;
- pCifsInode->clientCanCacheRead = true;
- cFYI(1, ("Exclusive Oplock inode %p",
- newinode));
- } else if ((oplock & 0xF) == OPLOCK_READ)
- pCifsInode->clientCanCacheRead = true;
- }
- write_unlock(&GlobalSMBSeslock);
+ } else if (!(posix_create) && (newinode)) {
+ cifs_fill_fileinfo(newinode, fileHandle,
+ cifs_sb->tcon, write_only);
}
cifs_create_out:
kfree(buf);
@@ -580,17 +602,21 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode,
return rc;
}
-
struct dentry *
cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
struct nameidata *nd)
{
int xid;
int rc = 0; /* to get around spurious gcc warning, set to zero here */
+ int oplock = 0;
+ int mode;
+ __u16 fileHandle = 0;
+ bool posix_open = false;
struct cifs_sb_info *cifs_sb;
struct cifsTconInfo *pTcon;
struct inode *newInode = NULL;
char *full_path = NULL;
+ struct file *filp;
xid = GetXid();
@@ -632,12 +658,37 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
}
cFYI(1, ("Full path: %s inode = 0x%p", full_path, direntry->d_inode));
- if (pTcon->unix_ext)
- rc = cifs_get_inode_info_unix(&newInode, full_path,
- parent_dir_inode->i_sb, xid);
- else
+ if (pTcon->unix_ext) {
+ if (!(nd->flags & (LOOKUP_PARENT | LOOKUP_DIRECTORY)) &&
+ (nd->flags & LOOKUP_OPEN)) {
+ if (!((nd->intent.open.flags & O_CREAT) &&
+ (nd->intent.open.flags & O_EXCL))) {
+ mode = nd->intent.open.create_mode &
+ ~current_umask();
+ rc = cifs_posix_open(full_path, &newInode,
+ parent_dir_inode->i_sb, mode,
+ nd->intent.open.flags, &oplock,
+ &fileHandle, xid);
+ /*
+ * This code works around a bug in
+ * samba posix open in samba versions 3.3.1
+ * and earlier where create works
+ * but open fails with invalid parameter.
+ * If either of these error codes are
+ * returned, follow the normal lookup.
+ * Otherwise, the error during posix open
+ * is handled.
+ */
+ if ((rc != -EINVAL) && (rc != -EOPNOTSUPP))
+ posix_open = true;
+ }
+ }
+ if (!posix_open)
+ rc = cifs_get_inode_info_unix(&newInode, full_path,
+ parent_dir_inode->i_sb, xid);
+ } else
rc = cifs_get_inode_info(&newInode, full_path, NULL,
- parent_dir_inode->i_sb, xid, NULL);
+ parent_dir_inode->i_sb, xid, NULL);
if ((rc == 0) && (newInode != NULL)) {
if (pTcon->nocase)
@@ -645,7 +696,8 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
else
direntry->d_op = &cifs_dentry_ops;
d_add(direntry, newInode);
-
+ if (posix_open)
+ filp = lookup_instantiate_filp(nd, direntry, NULL);
/* since paths are not looked up by component - the parent
directories are presumed to be good here */
renew_parental_timestamps(direntry);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-29 09:37:19 +0000