From 7e476a83fc35f825759d079f4a0ce349bd927ca9 Mon Sep 17 00:00:00 2001
From: Steve French <stfrench@microsoft.com>
Date: Wed, 29 May 2024 18:16:56 -0500
Subject: [PATCH] cifs: fix creating sockets when using sfu mount options
When running fstest generic/423 with sfu mount option, it
was being skipped due to inability to create sockets:
generic/423 [not run] cifs does not support mknod/mkfifo
which can also be easily reproduced with their af_unix tool:
./src/af_unix /mnt1/socket-two bind: Operation not permitted
Fix sfu mount option to allow creating and reporting sockets.
Cc: stable@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
---
fs/smb/client/cifspdu.h | 2 +-
fs/smb/client/inode.c | 13 +++++++++++++
fs/smb/client/smb2ops.c | 5 +++++
3 files changed, 19 insertions(+), 1 deletion(-)
@@ -2574,7 +2574,7 @@ typedef struct {
struct win_dev {
- unsigned char type[8]; /* IntxCHR or IntxBLK or LnxFIFO*/
+ unsigned char type[8]; /* IntxCHR or IntxBLK or LnxFIFO or LnxSOCK */
__le64 major;
__le64 minor;
} __attribute__((packed));
@@ -602,6 +602,19 @@ cifs_sfu_type(struct cifs_fattr *fattr, const char *path,
/* we have enough to decode dev num */
__u64 mjr; /* major */
__u64 mnr; /* minor */
+ mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
+ mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
+ fattr->cf_rdev = MKDEV(mjr, mnr);
+ }
+ } else if (memcmp("LnxSOCK", pbuf, 8) == 0) {
+ cifs_dbg(FYI, "Socket\n");
+ fattr->cf_mode |= S_IFSOCK;
+ fattr->cf_dtype = DT_SOCK;
+ if (bytes_read == 24) {
+ /* we have enough to decode dev num */
+ __u64 mjr; /* major */
+ __u64 mnr; /* minor */
+
mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
fattr->cf_rdev = MKDEV(mjr, mnr);
@@ -4997,6 +4997,11 @@ static int __cifs_sfu_make_node(unsigned int xid, struct inode *inode,
pdev.major = cpu_to_le64(MAJOR(dev));
pdev.minor = cpu_to_le64(MINOR(dev));
break;
+ case S_IFSOCK:
+ strscpy(pdev.type, "LnxSOCK");
+ pdev.major = cpu_to_le64(MAJOR(dev));
+ pdev.minor = cpu_to_le64(MINOR(dev));
+ break;
case S_IFIFO:
strscpy(pdev.type, "LnxFIFO");
break;
--
2.43.0
cifs: fix creating sockets when using sfu mount options When running fstest generic/423 with sfu mount option, it was being skipped due to inability to create sockets: generic/423 [not run] cifs does not support mknod/mkfifo which can also be easily reproduced with their af_unix tool: ./src/af_unix /mnt1/socket-two bind: Operation not permitted Fix sfu mount option to allow creating and reporting sockets. See attached