/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nspr.h"
#include "plgetopt.h"

#include <stdio.h>

#ifdef DEBUG
#define SEM_D "D"
#else
#define SEM_D
#endif
#ifdef IS_64
#define SEM_64 "64"
#else
#define SEM_64
#endif

#define SEM_NAME1 "/tmp/foo.sem" SEM_D SEM_64
#define SEM_NAME2 "/tmp/bar.sem" SEM_D SEM_64
#define SEM_MODE 0666

static PRBool debug_mode = PR_FALSE;

static void
Help(void)
{
    fprintf(stderr, "semaerr1 test program usage:\n");
    fprintf(stderr, "\t-d           debug mode         (FALSE)\n");
    fprintf(stderr, "\t-h           this message\n");
} /* Help */

int
main(int argc, char** argv)
{
    PLOptStatus os;
    PLOptState* opt = PL_CreateOptState(argc, argv, "dh");
    PRSem* sem;

    while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) {
        if (PL_OPT_BAD == os) {
            continue;
        }
        switch (opt->option) {
            case 'd': /* debug mode */
                debug_mode = PR_TRUE;
                break;
            case 'h':
            default:
                Help();
                return 2;
        }
    }
    PL_DestroyOptState(opt);

    /*
     * PR_SEM_CREATE|PR_SEM_EXCL should be able to
     * create a nonexistent semaphore.
     */
    (void)PR_DeleteSemaphore(SEM_NAME2);
    sem = PR_OpenSemaphore(SEM_NAME2, PR_SEM_CREATE | PR_SEM_EXCL, SEM_MODE, 0);
    if (sem == NULL) {
        fprintf(stderr, "PR_OpenSemaphore failed\n");
        exit(1);
    }
    if (PR_CloseSemaphore(sem) == PR_FAILURE) {
        fprintf(stderr, "PR_CloseSemaphore failed\n");
        exit(1);
    }
    if (PR_DeleteSemaphore(SEM_NAME2) == PR_FAILURE) {
        fprintf(stderr, "PR_DeleteSemaphore failed\n");
        exit(1);
    }

    /*
     * Opening an existing semaphore with PR_SEM_CREATE|PR_SEM_EXCL.
     * should fail with PR_FILE_EXISTS_ERROR.
     */
    sem = PR_OpenSemaphore(SEM_NAME1, PR_SEM_CREATE | PR_SEM_EXCL, SEM_MODE, 0);
    if (sem != NULL) {
        fprintf(stderr, "PR_OpenSemaphore should fail but succeeded\n");
        exit(1);
    }
    if (PR_GetError() != PR_FILE_EXISTS_ERROR) {
        fprintf(stderr, "Expect %d but got %d\n", PR_FILE_EXISTS_ERROR,
                PR_GetError());
        exit(1);
    }

    /*
     * Try again, with just PR_SEM_CREATE.  This should succeed.
     */
    sem = PR_OpenSemaphore(SEM_NAME1, PR_SEM_CREATE, SEM_MODE, 0);
    if (sem == NULL) {
        fprintf(stderr, "PR_OpenSemaphore failed (%d, %d)\n", PR_GetError(),
                PR_GetOSError());
        exit(1);
    }
    if (PR_CloseSemaphore(sem) == PR_FAILURE) {
        fprintf(stderr, "PR_CloseSemaphore failed\n");
        exit(1);
    }

    sem = PR_OpenSemaphore(SEM_NAME2, PR_SEM_CREATE | PR_SEM_EXCL, SEM_MODE, 0);
    if (sem == NULL) {
        fprintf(stderr, "PR_OpenSemaphore failed (%d, %d)\n", PR_GetError(),
                PR_GetOSError());
        exit(1);
    }
    if (PR_CloseSemaphore(sem) == PR_FAILURE) {
        fprintf(stderr, "PR_CloseSemaphore failed\n");
        exit(1);
    }

    printf("PASS\n");
    return 0;
}