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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 13:54:38 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 13:54:38 +0000 |
| commit | 8c1ab65c0f548d20b7f177bdb736daaf603340e1 (patch) | |
| tree | df55b7e75bf43f2bf500845b105afe3ac3a5157e /libc-top-half/musl/src/ipc/shmctl.c | |
| parent | Initial commit. (diff) | |
| download | wasi-libc-upstream/0.0_git20221206.8b7148f.tar.xz wasi-libc-upstream/0.0_git20221206.8b7148f.zip | |
Adding upstream version 0.0~git20221206.8b7148f.upstream/0.0_git20221206.8b7148f
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'libc-top-half/musl/src/ipc/shmctl.c')
| -rw-r--r-- | libc-top-half/musl/src/ipc/shmctl.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/ipc/shmctl.c b/libc-top-half/musl/src/ipc/shmctl.c new file mode 100644 index 0000000..1c9f78c --- /dev/null +++ b/libc-top-half/musl/src/ipc/shmctl.c @@ -0,0 +1,51 @@ +#include <sys/shm.h> +#include <endian.h> +#include "syscall.h" +#include "ipc.h" + +#if __BYTE_ORDER != __BIG_ENDIAN +#undef SYSCALL_IPC_BROKEN_MODE +#endif + +int shmctl(int id, int cmd, struct shmid_ds *buf) +{ +#if IPC_TIME64 + struct shmid_ds out, *orig; + if (cmd&IPC_TIME64) { + out = (struct shmid_ds){0}; + orig = buf; + buf = &out; + } +#endif +#ifdef SYSCALL_IPC_BROKEN_MODE + struct shmid_ds tmp; + if (cmd == IPC_SET) { + tmp = *buf; + tmp.shm_perm.mode *= 0x10000U; + buf = &tmp; + } +#endif +#ifndef SYS_ipc + int r = __syscall(SYS_shmctl, id, IPC_CMD(cmd), buf); +#else + int r = __syscall(SYS_ipc, IPCOP_shmctl, id, IPC_CMD(cmd), 0, buf, 0); +#endif +#ifdef SYSCALL_IPC_BROKEN_MODE + if (r >= 0) switch (cmd | IPC_TIME64) { + case IPC_STAT: + case SHM_STAT: + case SHM_STAT_ANY: + buf->shm_perm.mode >>= 16; + } +#endif +#if IPC_TIME64 + if (r >= 0 && (cmd&IPC_TIME64)) { + buf = orig; + *buf = out; + IPC_HILO(buf, shm_atime); + IPC_HILO(buf, shm_dtime); + IPC_HILO(buf, shm_ctime); + } +#endif + return __syscall_ret(r); +} |