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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-19 20:09:27 +0300 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 21:15:30 +0300 |
| commit | e530dca584a9aa4aedf26adf0ed3c1c9b80e2767 (patch) | |
| tree | 2ca93ae3fa0684ec65da2d72084032b8a29c1cb0 /kernel/uid16.h | |
| parent | 6203deb0a76f35b6dc476fecb228c850099a1bc4 (diff) | |
| download | linux-e530dca584a9aa4aedf26adf0ed3c1c9b80e2767.tar.xz | |
kernel: provide ksys_*() wrappers for syscalls called by kernel/uid16.c
Using these helpers allows us to avoid the in-kernel calls to these
syscalls: sys_setregid(), sys_setgid(), sys_setreuid(), sys_setuid(),
sys_setresuid(), sys_setresgid(), sys_setfsuid(), and sys_setfsgid().
The ksys_ prefix denotes that these function are meant as a drop-in
replacement for the syscall. In particular, they use the same calling
convention.
This patch is part of a series which removes in-kernel calls to syscalls.
On this basis, the syscall entry path can be streamlined. For details, see
http://lkml.kernel.org/r/20180325162527.GA17492@light.dominikbrodowski.net
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'kernel/uid16.h')
| -rw-r--r-- | kernel/uid16.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/kernel/uid16.h b/kernel/uid16.h new file mode 100644 index 000000000000..cdca040f7602 --- /dev/null +++ b/kernel/uid16.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef LINUX_UID16_H +#define LINUX_UID16_H + +long __sys_setuid(uid_t uid); +long __sys_setgid(gid_t gid); +long __sys_setreuid(uid_t ruid, uid_t euid); +long __sys_setregid(gid_t rgid, gid_t egid); +long __sys_setresuid(uid_t ruid, uid_t euid, uid_t suid); +long __sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid); +long __sys_setfsuid(uid_t uid); +long __sys_setfsgid(gid_t gid); + +#endif /* LINUX_UID16_H */ |