1 files changed, 97 insertions, 0 deletions
diff --git a/test/misc/tst-semctl.c b/test/misc/tst-semctl.c
new file mode 100644
index 0000000..99647d1
--- /dev/null
+++ b/test/misc/tst-semctl.c
@@ -0,0 +1,97 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/sem.h>
+#include <time.h>
+#include <unistd.h>
+
+union semun {
+    int val;
+    struct semid_ds *buf;
+    unsigned short *array;
+};
+
+struct timespec ts = {
+  .tv_sec = 3468960000,  // 3468960000 2075-12-05 Destination timestamp
+  .tv_nsec = 0
+};
+
+void print_semid_ds(struct semid_ds *ds) {
+    printf("sem_perm.uid: %d\n", ds->sem_perm.uid);
+    printf("sem_perm.gid: %d\n", ds->sem_perm.gid);
+    printf("sem_perm.cuid: %d\n", ds->sem_perm.cuid);
+    printf("sem_perm.cgid: %d\n", ds->sem_perm.cgid);
+    printf("sem_perm.mode: %o\n", ds->sem_perm.mode);
+    printf("sem_nsems: %d\n", ds->sem_nsems);
+    printf("sem_otime: %s", ctime(&ds->sem_otime));
+    printf("sem_ctime: %s \n", ctime(&ds->sem_ctime));
+}
+
+int main() {
+    int semid;
+    union semun arg;
+    struct semid_ds ds;
+    struct timespec ts_init, ts_final;
+
+    // Save system time
+    if (clock_gettime(CLOCK_REALTIME, &ts_init) == -1) {
+        perror("Error getting time");
+        return 1;
+    }
+
+
+    if (clock_settime(CLOCK_REALTIME, &ts) == -1) { // Set the time to after 2038
+        perror("Error setting time");
+        return 1;
+    }
+
+    // Create a semaphore set
+    if ((semid = semget(IPC_PRIVATE, 1, 0666 | IPC_CREAT)) == -1) {
+        perror("semget failed");
+        exit(1);
+    }
+
+    // Get the semid_ds structure
+    arg.buf = &ds;
+    if (semctl(semid, 0, IPC_STAT, arg) == -1) {
+        perror("semctl IPC_STAT failed");
+        exit(1);
+    }
+
+    // Print the structure contents
+    printf("=== semid_ds structure values ===\n");
+    print_semid_ds(&ds);
+
+
+    // Change permissions
+    ds.sem_perm.mode = 0600;  // Change to new permissions
+
+    if (semctl(semid, 0, IPC_SET, arg) == -1) {
+        perror("semctl IPC_SET failed");
+        semctl(semid, 0, IPC_RMID);
+        exit(EXIT_FAILURE);
+    }
+
+    // Print the structure contents
+    printf("=== semid_ds structure values ===\n");
+    print_semid_ds(&ds);
+
+    if ((ds.sem_ctime - ts.tv_sec > 60) || (ts.tv_sec - ds.sem_ctime > 60)) {
+        printf("\nSemctl get a error time! \n");
+        exit(EXIT_FAILURE);
+    }
+
+    // Delete a semaphore
+    if (semctl(semid, 0, IPC_RMID) == -1) {
+        perror("semctl IPC_RMID failed");
+        exit(1);
+    }
+
+    // Restore system time
+    clock_gettime(CLOCK_REALTIME, &ts_final);
+    ts_init.tv_sec = ts_init.tv_sec + ts_final.tv_sec - ts.tv_sec;
+    clock_settime(CLOCK_REALTIME, &ts_init);
+
+    return 0;
+}