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Diffstat (limited to 'file_cmds/ipcrm/ipcrm.c')
| -rw-r--r-- | file_cmds/ipcrm/ipcrm.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/file_cmds/ipcrm/ipcrm.c b/file_cmds/ipcrm/ipcrm.c new file mode 100644 index 0000000..e90aaa1 --- /dev/null +++ b/file_cmds/ipcrm/ipcrm.c @@ -0,0 +1,179 @@ +/* + * Copyright (c) 1994 Adam Glass + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Adam Glass. + * 4. The name of the Author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL Adam Glass BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +#ifndef lint +__used static const char rcsid[] = + "$Id: ipcrm.c,v 1.3 2005/02/03 07:31:33 josborne Exp $"; +#endif /* not lint */ + +#include <ctype.h> +#include <err.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/ipc.h> +#include <sys/msg.h> +#include <sys/sem.h> +#include <sys/shm.h> + +#define IPC_TO_STR(x) (x == 'Q' ? "msq" : (x == 'M' ? "shm" : "sem")) +#define IPC_TO_STRING(x) (x == 'Q' ? "message queue" : \ + (x == 'M' ? "shared memory segment" : "semaphore")) + +int signaled; + +static void usage(void) +{ + fprintf(stderr, "%s\n%s\n", + "usage: ipcrm [-q msqid] [-m shmid] [-s semid]", + " [-Q msgkey] [-M shmkey] [-S semkey] ..."); + exit(1); +} + +static int msgrm(key_t key, int id) +{ + if (key) { + id = msgget(key, 0); + if (id == -1) + return -1; + } + return msgctl(id, IPC_RMID, NULL); +} + +static int shmrm(key_t key, int id) +{ + if (key) { + id = shmget(key, 0, 0); + if (id == -1) + return -1; + } + return shmctl(id, IPC_RMID, NULL); +} + +static int semrm(key_t key, int id) +{ + if (key) { + id = semget(key, 0, 0); + if (id == -1) + return -1; + } + return semctl(id, 0, IPC_RMID); +} + +static void not_configured(__unused int unused) +{ + signaled++; +} + +int main(argc, argv) + int argc; + char *argv[]; + +{ + int c, result, errflg, target_id; + key_t target_key; + char *en; + + errflg = 0; + signal(SIGSYS, not_configured); + while ((c = getopt(argc, argv, ":q:m:s:Q:M:S:")) != -1) { + + signaled = 0; + switch (c) { + case 'q': + case 'm': + case 's': + target_id = (int)strtol(optarg, &en, 0); + if (*en) { + warnx("%s: '%s' is not a number", + IPC_TO_STRING(toupper(c)), optarg); + continue; + } + if (c == 'q') + result = msgrm(0, target_id); + else if (c == 'm') + result = shmrm(0, target_id); + else + result = semrm(0, target_id); + if (result < 0) { + errflg++; + if (!signaled) + warn("%sid(%d): ", IPC_TO_STR(toupper(c)), target_id); + else + warnx("%ss are not configured in the running kernel", + IPC_TO_STRING(toupper(c))); + } + break; + case 'Q': + case 'M': + case 'S': + target_key = (key_t)strtol(optarg, &en, 0); + if (*en) { + warnx("%s: '%s' is not a number", IPC_TO_STRING(c), optarg); + continue; + } + if (target_key == IPC_PRIVATE) { + warnx("can't remove private %ss", IPC_TO_STRING(c)); + continue; + } + if (c == 'Q') + result = msgrm(target_key, 0); + else if (c == 'M') + result = shmrm(target_key, 0); + else + result = semrm(target_key, 0); + if (result < 0) { + errflg++; + if (!signaled) + warn("%s key(%d): ", IPC_TO_STRING(c), target_key); + else + warnx("%ss are not configured in the running kernel", + IPC_TO_STRING(c)); + } + break; + case ':': + fprintf(stderr, "option -%c requires an argument\n", optopt); + usage(); + case '?': + fprintf(stderr, "unrecognized option: -%c\n", optopt); + usage(); + } + } + + if (optind != argc) { + fprintf(stderr, "unknown argument: %s\n", argv[optind]); + usage(); + } + exit(errflg); +} |