From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001 From: Vladimir Azarov Date: Tue, 1 Oct 2024 15:47:05 +0200 Subject: Initial version --- src/ipc/semget.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 src/ipc/semget.c (limited to 'src/ipc/semget.c') diff --git a/src/ipc/semget.c b/src/ipc/semget.c new file mode 100644 index 0000000..2cdf626 --- /dev/null +++ b/src/ipc/semget.c @@ -0,0 +1,19 @@ +#include +#include +#include +#include "syscall.h" +#include "ipc.h" + +int semget(key_t key, int n, int fl) +{ + /* The kernel uses the wrong type for the sem_nsems member + * of struct semid_ds, and thus might not check that the + * n fits in the correct (per POSIX) userspace type, so + * we have to check here. */ + if (n > USHRT_MAX) return __syscall_ret(-EINVAL); +#ifndef SYS_ipc + return syscall(SYS_semget, key, n, fl); +#else + return syscall(SYS_ipc, IPCOP_semget, key, n, fl); +#endif +} -- cgit v1.2.3