diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/unix/sysv/linux/shmctl.c | 44 |
1 files changed, 34 insertions, 10 deletions
diff --git a/sysdeps/unix/sysv/linux/shmctl.c b/sysdeps/unix/sysv/linux/shmctl.c index 1d19a798b1..833f013e69 100644 --- a/sysdeps/unix/sysv/linux/shmctl.c +++ b/sysdeps/unix/sysv/linux/shmctl.c @@ -88,25 +88,49 @@ __shmctl64 (int shmid, int cmd, struct __shmid64_ds *buf) { #if __IPC_TIME64 struct kernel_shmid64_ds kshmid, *arg = NULL; - if (buf != NULL) +#else + shmctl_arg_t *arg; +#endif + + switch (cmd) { - /* This is a Linux extension where kernel expects either a - 'struct shminfo' (IPC_INFO) or 'struct shm_info' (SHM_INFO). */ - if (cmd == IPC_INFO || cmd == SHM_INFO) - arg = (struct kernel_shmid64_ds *) buf; - else + case IPC_RMID: + case SHM_LOCK: + case SHM_UNLOCK: + arg = NULL; + break; + + case IPC_SET: + case IPC_STAT: + case SHM_STAT: + case SHM_STAT_ANY: +#if __IPC_TIME64 + if (buf != NULL) { shmid64_to_kshmid64 (buf, &kshmid); arg = &kshmid; } - } # ifdef __ASSUME_SYSVIPC_BROKEN_MODE_T - if (cmd == IPC_SET) - arg->shm_perm.mode *= 0x10000U; + if (cmd == IPC_SET) + arg->shm_perm.mode *= 0x10000U; # endif #else - shmctl_arg_t *arg = buf; + arg = buf; #endif + break; + + case IPC_INFO: + case SHM_INFO: + /* This is a Linux extension where kernel expects either a + 'struct shminfo' (IPC_INFO) or 'struct shm_info' (SHM_INFO). */ + arg = (__typeof__ (arg)) buf; + break; + + default: + __set_errno (EINVAL); + return -1; + } + int ret = shmctl_syscall (shmid, cmd, arg); if (ret < 0) |