From: Enzo Matsumiya ematsumiya@suse.de
[ Upstream commit 337b8b0e4343567221ef8d88aac5e418208d4ac1 ]
EEXIST didn't make sense to use when dfs_cache_find() couldn't find a cache entry nor retrieve a referral target.
It also doesn't make sense cifs_dfs_query_info_nonascii_quirk() to emulate ENOENT anymore.
Signed-off-by: Enzo Matsumiya ematsumiya@suse.de Reviewed-by: Paulo Alcantara (SUSE) pc@cjr.nz Signed-off-by: Steve French stfrench@microsoft.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/cifs/connect.c | 6 ++++-- fs/cifs/dfs_cache.c | 6 +++--- fs/cifs/misc.c | 6 +----- 3 files changed, 8 insertions(+), 10 deletions(-)
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 2a639fc79c30..b28b1ff39fed 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -3406,8 +3406,9 @@ cifs_are_all_path_components_accessible(struct TCP_Server_Info *server, }
/* - * Check if path is remote (e.g. a DFS share). Return -EREMOTE if it is, - * otherwise 0. + * Check if path is remote (i.e. a DFS share). + * + * Return -EREMOTE if it is, otherwise 0 or -errno. */ static int is_path_remote(struct mount_ctx *mnt_ctx) { @@ -3697,6 +3698,7 @@ int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx) if (!isdfs) goto out;
+ /* proceed as DFS mount */ uuid_gen(&mnt_ctx.mount_id); rc = connect_dfs_root(&mnt_ctx, &tl); dfs_cache_free_tgts(&tl); diff --git a/fs/cifs/dfs_cache.c b/fs/cifs/dfs_cache.c index 956f8e5cf3e7..c5dd6f7305bd 100644 --- a/fs/cifs/dfs_cache.c +++ b/fs/cifs/dfs_cache.c @@ -654,7 +654,7 @@ static struct cache_entry *__lookup_cache_entry(const char *path, unsigned int h return ce; } } - return ERR_PTR(-EEXIST); + return ERR_PTR(-ENOENT); }
/* @@ -662,7 +662,7 @@ static struct cache_entry *__lookup_cache_entry(const char *path, unsigned int h * * Use whole path components in the match. Must be called with htable_rw_lock held. * - * Return ERR_PTR(-EEXIST) if the entry is not found. + * Return ERR_PTR(-ENOENT) if the entry is not found. */ static struct cache_entry *lookup_cache_entry(const char *path) { @@ -710,7 +710,7 @@ static struct cache_entry *lookup_cache_entry(const char *path) while (e > s && *e != sep) e--; } - return ERR_PTR(-EEXIST); + return ERR_PTR(-ENOENT); }
/** diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index 114810e563a9..5a803d686146 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -1308,7 +1308,7 @@ int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix) * for "<server><dfsname><linkpath>" DFS reference, * where <dfsname> contains non-ASCII unicode symbols. * - * Check such DFS reference and emulate -ENOENT if it is actual. + * Check such DFS reference. */ int cifs_dfs_query_info_nonascii_quirk(const unsigned int xid, struct cifs_tcon *tcon, @@ -1340,10 +1340,6 @@ int cifs_dfs_query_info_nonascii_quirk(const unsigned int xid, cifs_dbg(FYI, "DFS ref '%s' is found, emulate -EREMOTE\n", dfspath); rc = -EREMOTE; - } else if (rc == -EEXIST) { - cifs_dbg(FYI, "DFS ref '%s' is not found, emulate -ENOENT\n", - dfspath); - rc = -ENOENT; } else { cifs_dbg(FYI, "%s: dfs_cache_find returned %d\n", __func__, rc); }