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authorPaulo Alcantara <pc@manguebit.com>2023-11-26 05:55:03 +0300
committerSteve French <stfrench@microsoft.com>2024-01-08 00:46:05 +0300
commit102466f303ffcd5cff207b3c122557f73f1041e6 (patch)
tree3f6c69b86dbb4343870b24ea3a289823622835ae /fs/smb/client/link.c
parent3322960ce222997b1663ffa69e691b2edfec4ac9 (diff)
downloadlinux-102466f303ffcd5cff207b3c122557f73f1041e6.tar.xz
smb: client: allow creating special files via reparse points
Add support for creating special files (e.g. char/block devices, sockets, fifos) via NFS reparse points on SMB2+, which are fully supported by most SMB servers and documented in MS-FSCC. smb2_get_reparse_inode() creates the file with a corresponding reparse point buffer set in @iov through a single roundtrip to the server. Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202311260746.HOJ039BV-lkp@intel.com/ Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/smb/client/link.c')
-rw-r--r--fs/smb/client/link.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/smb/client/link.c b/fs/smb/client/link.c
index a1da50e66fbb..5ce0f74be4ec 100644
--- a/fs/smb/client/link.c
+++ b/fs/smb/client/link.c
@@ -614,14 +614,16 @@ cifs_symlink(struct mnt_idmap *idmap, struct inode *inode,
cifs_sb_target->local_nls); */
if (rc == 0) {
- if (pTcon->posix_extensions)
- rc = smb311_posix_get_inode_info(&newinode, full_path, inode->i_sb, xid);
- else if (pTcon->unix_ext)
+ if (pTcon->posix_extensions) {
+ rc = smb311_posix_get_inode_info(&newinode, full_path,
+ NULL, inode->i_sb, xid);
+ } else if (pTcon->unix_ext) {
rc = cifs_get_inode_info_unix(&newinode, full_path,
inode->i_sb, xid);
- else
+ } else {
rc = cifs_get_inode_info(&newinode, full_path, NULL,
inode->i_sb, xid, NULL);
+ }
if (rc != 0) {
cifs_dbg(FYI, "Create symlink ok, getinodeinfo fail rc = %d\n",