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fs/namespace: add __user to open_tree and move_mount syscalls

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Thw open_tree and move_mount syscalls take names from the
user, so add the __user to these to ensure the following
warnings from sparse are fixed:

fs/namespace.c:2392:35: warning: incorrect type in argument 2 (different address spaces)
fs/namespace.c:2392:35:    expected char const [noderef] <asn:1> *name
fs/namespace.c:2392:35:    got char const *filename
fs/namespace.c:3541:38: warning: incorrect type in argument 2 (different address spaces)
fs/namespace.c:3541:38:    expected char const [noderef] <asn:1> *name
fs/namespace.c:3541:38:    got char const *from_pathname
fs/namespace.c:3550:36: warning: incorrect type in argument 2 (different address spaces)
fs/namespace.c:3550:36:    expected char const [noderef] <asn:1> *name
fs/namespace.c:3550:36:    got char const *to_pathname

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Ben Dooks 2019-10-15 11:35:02 +01:00 committed by Al Viro
parent e200327708
commit 2658ce095d
1 changed files with 3 additions and 3 deletions
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6
fs/namespace.c
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@ -2356,7 +2356,7 @@ static struct file *open_detached_copy(struct path *path, bool recursive)
return file; return file;
} }
SYSCALL_DEFINE3(open_tree, int, dfd, const char *, filename, unsigned, flags) SYSCALL_DEFINE3(open_tree, int, dfd, const char __user *, filename, unsigned, flags)
{ {
struct file *file; struct file *file;
struct path path; struct path path;
@ -3515,8 +3515,8 @@ err_fsfd:
* Note the flags value is a combination of MOVE_MOUNT_* flags. * Note the flags value is a combination of MOVE_MOUNT_* flags.
*/ */
SYSCALL_DEFINE5(move_mount, SYSCALL_DEFINE5(move_mount,
int, from_dfd, const char *, from_pathname, int, from_dfd, const char __user *, from_pathname,
int, to_dfd, const char *, to_pathname, int, to_dfd, const char __user *, to_pathname,
unsigned int, flags) unsigned int, flags)
{ {
struct path from_path, to_path; struct path from_path, to_path;