Le 27/10/2025 à 09:44, Thomas Gleixner a écrit :
From: Thomas Gleixner <[email protected]>
Replace the open coded implementation with the scoped user access guard.
No functional change intended.
Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: Christian Brauner <[email protected]>
Cc: Jan Kara <[email protected]>
Cc: [email protected]
Reviewed-by: Christophe Leroy <[email protected]>
---
V4: Use read guard - Peterz
Rename once more
V3: Adopt to scope changes
---
fs/select.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
---
--- a/fs/select.c
+++ b/fs/select.c
@@ -776,17 +776,13 @@ static inline int get_sigset_argpack(str
{
// the path is hot enough for overhead of copy_from_user() to matter
if (from) {
- if (can_do_masked_user_access())
- from = masked_user_access_begin(from);
- else if (!user_read_access_begin(from, sizeof(*from)))
- return -EFAULT;
- unsafe_get_user(to->p, &from->p, Efault);
- unsafe_get_user(to->size, &from->size, Efault);
- user_read_access_end();
+ scoped_user_read_access(from, Efault) {
+ unsafe_get_user(to->p, &from->p, Efault);
+ unsafe_get_user(to->size, &from->size, Efault);
+ }
}
return 0;
Efault:
- user_read_access_end();
return -EFAULT;
}
