Move the protocol parameter validation into a seperate function.
Signed-off-by: Ian Kent <[email protected]>
---
fs/autofs/inode.c | 38 +++++++++++++++++++++++---------------
1 file changed, 23 insertions(+), 15 deletions(-)
diff --git a/fs/autofs/inode.c b/fs/autofs/inode.c
index 5e061ce3ab8d..e2026e063d8c 100644
--- a/fs/autofs/inode.c
+++ b/fs/autofs/inode.c
@@ -287,6 +287,28 @@ static struct autofs_sb_info *autofs_alloc_sbi(void)
return sbi;
}
+static int autofs_validate_protocol(struct autofs_sb_info *sbi)
+{
+ /* Test versions first */
+ if (sbi->max_proto < AUTOFS_MIN_PROTO_VERSION ||
+ sbi->min_proto > AUTOFS_MAX_PROTO_VERSION) {
+ pr_err("kernel does not match daemon version "
+ "daemon (%d, %d) kernel (%d, %d)\n",
+ sbi->min_proto, sbi->max_proto,
+ AUTOFS_MIN_PROTO_VERSION, AUTOFS_MAX_PROTO_VERSION);
+ return -EINVAL;
+ }
+
+ /* Establish highest kernel protocol version */
+ if (sbi->max_proto > AUTOFS_MAX_PROTO_VERSION)
+ sbi->version = AUTOFS_MAX_PROTO_VERSION;
+ else
+ sbi->version = sbi->max_proto;
+ sbi->sub_version = AUTOFS_PROTO_SUBVERSION;
+
+ return 0;
+}
+
int autofs_fill_super(struct super_block *s, void *data, int silent)
{
struct inode *root_inode;
@@ -335,22 +357,8 @@ int autofs_fill_super(struct super_block *s, void *data, int silent)
goto fail_dput;
}
- /* Test versions first */
- if (sbi->max_proto < AUTOFS_MIN_PROTO_VERSION ||
- sbi->min_proto > AUTOFS_MAX_PROTO_VERSION) {
- pr_err("kernel does not match daemon version "
- "daemon (%d, %d) kernel (%d, %d)\n",
- sbi->min_proto, sbi->max_proto,
- AUTOFS_MIN_PROTO_VERSION, AUTOFS_MAX_PROTO_VERSION);
+ if (autofs_validate_protocol(sbi))
goto fail_dput;
- }
-
- /* Establish highest kernel protocol version */
- if (sbi->max_proto > AUTOFS_MAX_PROTO_VERSION)
- sbi->version = AUTOFS_MAX_PROTO_VERSION;
- else
- sbi->version = sbi->max_proto;
- sbi->sub_version = AUTOFS_PROTO_SUBVERSION;
if (pgrp_set) {
sbi->oz_pgrp = find_get_pid(pgrp);
--
2.41.0