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| author |   Ingo Molnar <mingo@kernel.org> | 2022-09-21 09:58:02 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2022-09-21 09:58:02 +0200 |
| commit | 74656d03ac36fabb16b9df5221cf398ee3a9ca08 (patch) | |
| tree | 0600e619ac817e2c016c148810814f55280316cc /include/linux/sockptr.h | |
| parent | locking: Add __sched to semaphore functions (diff) | |
| parent | Linux 6.0-rc6 (diff) | |
| download | linux-dev-74656d03ac36fabb16b9df5221cf398ee3a9ca08.tar.xz linux-dev-74656d03ac36fabb16b9df5221cf398ee3a9ca08.zip | |
Merge tag 'v6.0-rc6' into locking/core, to refresh the branch
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/sockptr.h')
| -rw-r--r-- | include/linux/sockptr.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/sockptr.h b/include/linux/sockptr.h index ea193414298b..d45902fb4cad 100644 --- a/include/linux/sockptr.h +++ b/include/linux/sockptr.h @@ -102,4 +102,12 @@ static inline long strncpy_from_sockptr(char *dst, sockptr_t src, size_t count) return strncpy_from_user(dst, src.user, count); } +static inline int check_zeroed_sockptr(sockptr_t src, size_t offset, + size_t size) +{ + if (!sockptr_is_kernel(src)) + return check_zeroed_user(src.user + offset, size); + return memchr_inv(src.kernel + offset, 0, size) == NULL; +} + #endif /* _LINUX_SOCKPTR_H */ |