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sysfs(2): fs_index() argument is _not_ a pathname

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... it's a filesystem type name.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2025-12-14 03:32:45 -05:00
parent 9b323d2f47
commit 0787a93baa
1 changed files with 3 additions and 6 deletions
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9
fs/filesystems.c
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@ -132,24 +132,21 @@ EXPORT_SYMBOL(unregister_filesystem);
static int fs_index(const char __user * __name)
{
struct file_system_type * tmp;
struct filename *name;
char *name __free(kfree) = strndup_user(__name, PATH_MAX);
int err, index;
name = getname(__name);
err = PTR_ERR(name);
if (IS_ERR(name))
return err;
return PTR_ERR(name);
err = -EINVAL;
read_lock(&file_systems_lock);
for (tmp=file_systems, index=0 ; tmp ; tmp=tmp->next, index++) {
if (strcmp(tmp->name, name->name) == 0) {
if (strcmp(tmp->name, name) == 0) {
err = index;
break;
}
}
read_unlock(&file_systems_lock);
putname(name);
return err;
}