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Diffstat (limited to 'src/ipc/semctl.c')
-rw-r--r--src/ipc/semctl.c26
1 files changed, 24 insertions, 2 deletions
diff --git a/src/ipc/semctl.c b/src/ipc/semctl.c
index 673a9a8c..941e2813 100644
--- a/src/ipc/semctl.c
+++ b/src/ipc/semctl.c
@@ -1,8 +1,13 @@
#include <sys/sem.h>
#include <stdarg.h>
+#include <endian.h>
#include "syscall.h"
#include "ipc.h"
+#if __BYTE_ORDER != __BIG_ENDIAN
+#undef SYSCALL_IPC_BROKEN_MODE
+#endif
+
union semun {
int val;
struct semid_ds *buf;
@@ -20,9 +25,26 @@ int semctl(int id, int num, int cmd, ...)
arg = va_arg(ap, union semun);
va_end(ap);
}
+#ifdef SYSCALL_IPC_BROKEN_MODE
+ struct semid_ds tmp;
+ if (cmd == IPC_SET) {
+ tmp = *arg.buf;
+ tmp.sem_perm.mode *= 0x10000U;
+ arg.buf = &tmp;
+ }
+#endif
#ifdef SYS_semctl
- return syscall(SYS_semctl, id, num, cmd | IPC_64, arg.buf);
+ int r = __syscall(SYS_semctl, id, num, cmd | IPC_64, arg.buf);
#else
- return syscall(SYS_ipc, IPCOP_semctl, id, num, cmd | IPC_64, &arg.buf);
+ int r = __syscall(SYS_ipc, IPCOP_semctl, id, num, cmd | IPC_64, &arg.buf);
+#endif
+#ifdef SYSCALL_IPC_BROKEN_MODE
+ if (r >= 0) switch (cmd) {
+ case IPC_STAT:
+ case SEM_STAT:
+ case SEM_STAT_ANY:
+ arg.buf->sem_perm.mode >>= 16;
+ }
#endif
+ return __syscall_ret(r);
}