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| author | Al Viro <viro@zeniv.linux.org.uk> | 2017-07-09 10:38:28 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-07-15 20:46:47 -0400 |
| commit | a78ee9ed2f828e1960f366bf7ab204e7f19924c7 (patch) | |
| tree | 4404d3fe1a46a34c28028df0826dfa71ccf356bc /ipc/shm.c | |
| parent | 9b1404c24a357332cb2a6df7c4337e943a4545fd (diff) | |
| download | lwn-a78ee9ed2f828e1960f366bf7ab204e7f19924c7.tar.gz lwn-a78ee9ed2f828e1960f366bf7ab204e7f19924c7.zip | |
shmat(2): move compat to native
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'ipc/shm.c')
| -rw-r--r-- | ipc/shm.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/ipc/shm.c b/ipc/shm.c index 2e31545035a6..342024de3b9d 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -1439,6 +1439,25 @@ SYSCALL_DEFINE3(shmat, int, shmid, char __user *, shmaddr, int, shmflg) return (long)ret; } +#ifdef CONFIG_COMPAT + +#ifndef COMPAT_SHMLBA +#define COMPAT_SHMLBA SHMLBA +#endif + +COMPAT_SYSCALL_DEFINE3(shmat, int, shmid, compat_uptr_t, shmaddr, int, shmflg) +{ + unsigned long ret; + long err; + + err = do_shmat(shmid, compat_ptr(shmaddr), shmflg, &ret, COMPAT_SHMLBA); + if (err) + return err; + force_successful_syscall_return(); + return (long)ret; +} +#endif + /* * detach and kill segment if marked destroyed. * The work is done in shm_close. |