busybox

/*

 * ipcrm.c -- utility to allow removal of IPC objects and data structures.

 *

 * 01 Sept 2004 - Rodney Radford <rradford@mindspring.com>

 * Adapted for busybox from util-linux-2.12a.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

 * General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

 *

 * --- Pre-busybox history from util-linux-2.12a ------------------------

 *

 * 1999-04-02 frank zago

 * - can now remove several id's in the same call

 *

 * 1999-02-22 Arkadiusz Miÿkiewicz <misiek@pld.ORG.PL>

 * - added Native Language Support

 *

 * Original author - krishna balasubramanian 1993

 */

​

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <errno.h>

​

#include <sys/types.h>

#include <sys/ipc.h>

#include <sys/shm.h>

#include <sys/msg.h>

#include <sys/sem.h>

​

/* X/OPEN tells us to use <sys/{types,ipc,sem}.h> for semctl() */

/* X/OPEN tells us to use <sys/{types,ipc,msg}.h> for msgctl() */

/* for getopt */

#include <unistd.h>

​

/* for tolower and isupper */

#include <ctype.h>

​

#include "busybox.h"

​

#if defined (__GNU_LIBRARY__) && !defined(_SEM_SEMUN_UNDEFINED)

/* union semun is defined by including <sys/sem.h> */

#else

/* according to X/OPEN we have to define it ourselves */

union semun {

    int val;

    struct semid_ds *buf;

    unsigned short int *array;

    struct seminfo *__buf;

};

#endif

​

typedef enum type_id {

    SHM,

    SEM,

    MSG

} type_id;

​

static int

remove_ids(type_id type, int argc, char **argv) {

    int id;

    int ret = 0;        /* for gcc */

    char *end;

    int nb_errors = 0;

    union semun arg;

​

    arg.val = 0;

​

    while(argc) {

​

        id = strtoul(argv[0], &end, 10);

​

        if (*end != 0) {

            bb_printf ("invalid id: %s\n", argv[0]);

            nb_errors ++;

        } else {

            switch(type) {

            case SEM:

                ret = semctl (id, 0, IPC_RMID, arg);

                break;