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alpha: switch osf_mount() to strndup_user()

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... same as native mount(2) is doing for devname argument.  While we
are at it, fix misspelling ufs_args as cdfs_args in osf_ufs_mount() -
layouts are identical, so it doesn't change anything, but the current
variant is confusing for no reason.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2025-12-14 03:26:56 -05:00
parent 39537a335a
commit 9b323d2f47
1 changed files with 11 additions and 23 deletions
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34
arch/alpha/kernel/osf_sys.c
View file

@ -454,42 +454,30 @@ static int
osf_ufs_mount(const char __user *dirname,
struct ufs_args __user *args, int flags)
{
int retval;
struct cdfs_args tmp;
struct filename *devname;
struct ufs_args tmp;
char *devname __free(kfree) = NULL;
retval = -EFAULT;
if (copy_from_user(&tmp, args, sizeof(tmp)))
goto out;
devname = getname(tmp.devname);
retval = PTR_ERR(devname);
return -EFAULT;
devname = strndup_user(tmp.devname, PATH_MAX);
if (IS_ERR(devname))
goto out;
retval = do_mount(devname->name, dirname, "ext2", flags, NULL);
putname(devname);
out:
return retval;
return PTR_ERR(devname);
return do_mount(devname, dirname, "ext2", flags, NULL);
}
static int
osf_cdfs_mount(const char __user *dirname,
struct cdfs_args __user *args, int flags)
{
int retval;
struct cdfs_args tmp;
struct filename *devname;
char *devname __free(kfree) = NULL;
retval = -EFAULT;
if (copy_from_user(&tmp, args, sizeof(tmp)))
goto out;
devname = getname(tmp.devname);
retval = PTR_ERR(devname);
return -EFAULT;
devname = strndup_user(tmp.devname, PATH_MAX);
if (IS_ERR(devname))
goto out;
retval = do_mount(devname->name, dirname, "iso9660", flags, NULL);
putname(devname);
out:
return retval;
return PTR_ERR(devname);
return do_mount(devname, dirname, "iso9660", flags, NULL);
}
static int