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[PATCH] ncpfs: ensure we free wdog_pid on parse_option or fill_inode failure

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This took a little refactoring but now errors are handled cleanly.  When
this code used pid_t values this wasn't necessary because you can't
leak a pid_t.

Thanks to Peter Vandrovec for spotting this.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Peter Vandrovec <vandrove@vc.cvut.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Eric W. Biederman 2006-12-13 00:35:13 -08:00 committed by Linus Torvalds
parent 2154227a2c
commit 1de241268d
1 changed files with 15 additions and 8 deletions
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23
fs/ncpfs/inode.c
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@ -327,6 +327,7 @@ static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options)
char *optarg;
unsigned long optint;
int version = 0;
int ret;
data->flags = 0;
data->int_flags = 0;
@ -343,8 +344,9 @@ static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options)
data->mounted_vol[0] = 0;
while ((optval = ncp_getopt("ncpfs", &options, ncp_opts, NULL, &optarg, &optint)) != 0) {
if (optval < 0)
return optval;
ret = optval;
if (ret < 0)
goto err;
switch (optval) {
case 'u':
data->uid = optint;
@ -380,18 +382,21 @@ static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options)
data->info_fd = optint;
break;
case 'v':
if (optint < NCP_MOUNT_VERSION_V4) {
return -ECHRNG;
}
if (optint > NCP_MOUNT_VERSION_V5) {
return -ECHRNG;
}
ret = -ECHRNG;
if (optint < NCP_MOUNT_VERSION_V4)
goto err;
if (optint > NCP_MOUNT_VERSION_V5)
goto err;
version = optint;
break;
}
}
return 0;
err:
put_pid(data->wdog_pid);
data->wdog_pid = NULL;
return ret;
}
static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
@ -409,6 +414,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
#endif
struct ncp_entry_info finfo;
data.wdog_pid = NULL;
server = kzalloc(sizeof(struct ncp_server), GFP_KERNEL);
if (!server)
return -ENOMEM;
@ -679,6 +685,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
*/
fput(ncp_filp);
out:
put_pid(data.wdog_pid);
sb->s_fs_info = NULL;
kfree(server);
return error;