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-rw-r--r--fs/smb/client/cached_dir.h8
-rw-r--r--fs/smb/client/connect.c10
-rw-r--r--fs/smb/client/file.c9
-rw-r--r--fs/smb/client/readdir.c28
4 files changed, 33 insertions, 22 deletions
diff --git a/fs/smb/client/cached_dir.h b/fs/smb/client/cached_dir.h
index 1dfe79d947a6..bc8a812ff95f 100644
--- a/fs/smb/client/cached_dir.h
+++ b/fs/smb/client/cached_dir.h
@@ -21,10 +21,10 @@ struct cached_dirent {
struct cached_dirents {
bool is_valid:1;
bool is_failed:1;
- struct dir_context *ctx; /*
- * Only used to make sure we only take entries
- * from a single context. Never dereferenced.
- */
+ struct file *file; /*
+ * Used to associate the cache with a single
+ * open file instance.
+ */
struct mutex de_mutex;
int pos; /* Expected ctx->pos */
struct list_head entries;
diff --git a/fs/smb/client/connect.c b/fs/smb/client/connect.c
index 28bc33496623..c4fb80b37738 100644
--- a/fs/smb/client/connect.c
+++ b/fs/smb/client/connect.c
@@ -3718,9 +3718,15 @@ int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx)
goto out;
}
- /* if new SMB3.11 POSIX extensions are supported do not remap / and \ */
- if (tcon->posix_extensions)
+ /*
+ * if new SMB3.11 POSIX extensions are supported, do not change anything in the
+ * path (i.e., do not remap / and \ and do not map any special characters)
+ */
+ if (tcon->posix_extensions) {
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_POSIX_PATHS;
+ cifs_sb->mnt_cifs_flags &= ~(CIFS_MOUNT_MAP_SFM_CHR |
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+ }
#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
/* tell server which Unix caps we support */
diff --git a/fs/smb/client/file.c b/fs/smb/client/file.c
index d2df10b8e6fd..9835672267d2 100644
--- a/fs/smb/client/file.c
+++ b/fs/smb/client/file.c
@@ -999,15 +999,18 @@ int cifs_open(struct inode *inode, struct file *file)
rc = cifs_get_readable_path(tcon, full_path, &cfile);
}
if (rc == 0) {
- if (file->f_flags == cfile->f_flags) {
+ unsigned int oflags = file->f_flags & ~(O_CREAT|O_EXCL|O_TRUNC);
+ unsigned int cflags = cfile->f_flags & ~(O_CREAT|O_EXCL|O_TRUNC);
+
+ if (cifs_convert_flags(oflags, 0) == cifs_convert_flags(cflags, 0) &&
+ (oflags & (O_SYNC|O_DIRECT)) == (cflags & (O_SYNC|O_DIRECT))) {
file->private_data = cfile;
spin_lock(&CIFS_I(inode)->deferred_lock);
cifs_del_deferred_close(cfile);
spin_unlock(&CIFS_I(inode)->deferred_lock);
goto use_cache;
- } else {
- _cifsFileInfo_put(cfile, true, false);
}
+ _cifsFileInfo_put(cfile, true, false);
} else {
/* hard link on the defeered close file */
rc = cifs_get_hardlink_path(tcon, inode, file);
diff --git a/fs/smb/client/readdir.c b/fs/smb/client/readdir.c
index f9f11cbf89be..ba0193cf9033 100644
--- a/fs/smb/client/readdir.c
+++ b/fs/smb/client/readdir.c
@@ -851,9 +851,9 @@ static bool emit_cached_dirents(struct cached_dirents *cde,
}
static void update_cached_dirents_count(struct cached_dirents *cde,
- struct dir_context *ctx)
+ struct file *file)
{
- if (cde->ctx != ctx)
+ if (cde->file != file)
return;
if (cde->is_valid || cde->is_failed)
return;
@@ -862,9 +862,9 @@ static void update_cached_dirents_count(struct cached_dirents *cde,
}
static void finished_cached_dirents_count(struct cached_dirents *cde,
- struct dir_context *ctx)
+ struct dir_context *ctx, struct file *file)
{
- if (cde->ctx != ctx)
+ if (cde->file != file)
return;
if (cde->is_valid || cde->is_failed)
return;
@@ -877,11 +877,12 @@ static void finished_cached_dirents_count(struct cached_dirents *cde,
static void add_cached_dirent(struct cached_dirents *cde,
struct dir_context *ctx,
const char *name, int namelen,
- struct cifs_fattr *fattr)
+ struct cifs_fattr *fattr,
+ struct file *file)
{
struct cached_dirent *de;
- if (cde->ctx != ctx)
+ if (cde->file != file)
return;
if (cde->is_valid || cde->is_failed)
return;
@@ -911,7 +912,8 @@ static void add_cached_dirent(struct cached_dirents *cde,
static bool cifs_dir_emit(struct dir_context *ctx,
const char *name, int namelen,
struct cifs_fattr *fattr,
- struct cached_fid *cfid)
+ struct cached_fid *cfid,
+ struct file *file)
{
bool rc;
ino_t ino = cifs_uniqueid_to_ino_t(fattr->cf_uniqueid);
@@ -923,7 +925,7 @@ static bool cifs_dir_emit(struct dir_context *ctx,
if (cfid) {
mutex_lock(&cfid->dirents.de_mutex);
add_cached_dirent(&cfid->dirents, ctx, name, namelen,
- fattr);
+ fattr, file);
mutex_unlock(&cfid->dirents.de_mutex);
}
@@ -1023,7 +1025,7 @@ static int cifs_filldir(char *find_entry, struct file *file,
cifs_prime_dcache(file_dentry(file), &name, &fattr);
return !cifs_dir_emit(ctx, name.name, name.len,
- &fattr, cfid);
+ &fattr, cfid, file);
}
@@ -1074,8 +1076,8 @@ int cifs_readdir(struct file *file, struct dir_context *ctx)
* we need to initialize scanning and storing the
* directory content.
*/
- if (ctx->pos == 0 && cfid->dirents.ctx == NULL) {
- cfid->dirents.ctx = ctx;
+ if (ctx->pos == 0 && cfid->dirents.file == NULL) {
+ cfid->dirents.file = file;
cfid->dirents.pos = 2;
}
/*
@@ -1143,7 +1145,7 @@ int cifs_readdir(struct file *file, struct dir_context *ctx)
} else {
if (cfid) {
mutex_lock(&cfid->dirents.de_mutex);
- finished_cached_dirents_count(&cfid->dirents, ctx);
+ finished_cached_dirents_count(&cfid->dirents, ctx, file);
mutex_unlock(&cfid->dirents.de_mutex);
}
cifs_dbg(FYI, "Could not find entry\n");
@@ -1184,7 +1186,7 @@ int cifs_readdir(struct file *file, struct dir_context *ctx)
ctx->pos++;
if (cfid) {
mutex_lock(&cfid->dirents.de_mutex);
- update_cached_dirents_count(&cfid->dirents, ctx);
+ update_cached_dirents_count(&cfid->dirents, file);
mutex_unlock(&cfid->dirents.de_mutex);
}
generated by cgit (git 2.34.1) at 2025-06-15 11:44:53 +0000