diff options
| author | yliu <yu.liu@ingenic.com> | 2025-08-06 10:19:51 +0800 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2025-08-16 20:44:13 +0200 |
| commit | f6f9f40cb17ae95610c4fe36f6ee77cfbcf05df1 (patch) | |
| tree | 0d489e449ba3fcf436d6d66fd2bc7576ab186420 /libc/misc/sysvipc/sem.c | |
| parent | 9ffed9adb130d45b9f31ca7a305153e86586c877 (diff) | |
Diffstat (limited to 'libc/misc/sysvipc/sem.c')
| -rw-r--r-- | libc/misc/sysvipc/sem.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libc/misc/sysvipc/sem.c b/libc/misc/sysvipc/sem.c index ec5c51490..66f86f53c 100644 --- a/libc/misc/sysvipc/sem.c +++ b/libc/misc/sysvipc/sem.c @@ -58,7 +58,10 @@ int semctl(int semid, int semnum, int cmd, ...) #ifdef __NR_semctl int __ret = __semctl(semid, semnum, cmd | __IPC_64, arg.__pad); #if (__WORDSIZE == 32) && defined(__UCLIBC_USE_TIME64__) - if (arg.__pad != NULL) { + // Only when cmd is IPC_STAT and IPC_SET, semun points to struct semid_ds. + // At this point, arg.__pad should not be NULL, but a check is added just + // to be safe. + if ((cmd & (IPC_STAT | IPC_SET)) && (arg.__pad != NULL)) { arg.buf->sem_otime = (__time_t)arg.buf->__sem_otime_internal_1 | (__time_t)(arg.buf->__sem_otime_internal_2) << 32; arg.buf->sem_ctime = (__time_t)arg.buf->__sem_ctime_internal_1 | (__time_t)(arg.buf->__sem_ctime_internal_2) << 32; } |