SFU since its (first) version 3.0 supports AF_LOCAL sockets and stores them
on filesytem as system file with one zero byte. Add support for detecting
this SFU socket type into cifs_sfu_type() function.
With this change cifs_sfu_type() would correctly detect all special file
types created by SFU: fifo, socket, symlink, block and char.
Signed-off-by: Pali Rohár <pali@xxxxxxxxxx>
---
fs/smb/client/inode.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/fs/smb/client/inode.c b/fs/smb/client/inode.c
index 70c32b40ede0..331a86074ae7 100644
--- a/fs/smb/client/inode.c
+++ b/fs/smb/client/inode.c
@@ -545,7 +545,7 @@ cifs_sfu_type(struct cifs_fattr *fattr, const char *path,
fattr->cf_mode |= S_IFIFO;
fattr->cf_dtype = DT_FIFO;
return 0;
- } else if (fattr->cf_eof < 8) {
+ } else if (fattr->cf_eof > 1 && fattr->cf_eof < 8) {
fattr->cf_mode |= S_IFREG;
fattr->cf_dtype = DT_REG;
return -EINVAL; /* EOPNOTSUPP? */
@@ -655,6 +655,10 @@ cifs_sfu_type(struct cifs_fattr *fattr, const char *path,
fattr->cf_dtype = DT_REG;
rc = -EOPNOTSUPP;
}
+ } else if ((rc == 0) && (bytes_read == 1) && (pbuf[0] == '\0')) {
+ cifs_dbg(FYI, "Socket\n");
+ fattr->cf_mode |= S_IFSOCK;
+ fattr->cf_dtype = DT_SOCK;
} else {
fattr->cf_mode |= S_IFREG; /* then it is a file */
fattr->cf_dtype = DT_REG;
--
2.20.1
