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/*
* krishna balasubramanian 1993
*
* 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@pld.ORG.PL>
* - added Native Language Support
*
* 1999-04-02 frank zago
* - can now remove several id's in the same call
*
*/
#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>
#include "nls.h"
/* for getopt */
#include <unistd.h>
/* for tolower and isupper */
#include <ctype.h>
#ifndef HAVE_UNION_SEMUN
/* 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
static void usage(char *);
char *execname;
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) {
printf (_("invalid id: %s\n"), argv[0]);
nb_errors ++;
} else {
switch(type) {
case SEM:
ret = semctl (id, 0, IPC_RMID, arg);
break;
case MSG:
ret = msgctl (id, IPC_RMID, NULL);
break;
case SHM:
ret = shmctl (id, IPC_RMID, NULL);
break;
}
if (ret) {
printf (_("cannot remove id %s (%s)\n"),
argv[0], strerror(errno));
nb_errors ++;
}
}
argc--;
argv++;
}
return(nb_errors);
}
static void deprecate_display_usage(void)
{
usage(execname);
printf (_("deprecated usage: %s {shm | msg | sem} id ...\n"),
execname);
}
static int deprecated_main(int argc, char **argv)
{
execname = argv[0];
if (argc < 3) {
deprecate_display_usage();
exit(1);
}
if (!strcmp(argv[1], "shm")) {
if (remove_ids(SHM, argc-2, &argv[2]))
exit(1);
}
else if (!strcmp(argv[1], "msg")) {
if (remove_ids(MSG, argc-2, &argv[2]))
exit(1);
}
else if (!strcmp(argv[1], "sem")) {
if (remove_ids(SEM, argc-2, &argv[2]))
exit(1);
}
else {
deprecate_display_usage();
printf (_("unknown resource type: %s\n"), argv[1]);
exit(1);
}
printf (_("resource(s) deleted\n"));
return 0;
}
/* print the new usage */
static void
usage(char *progname)
{
fprintf(stderr,
_("usage: %s [ [-q msqid] [-m shmid] [-s semid]\n"
" [-Q msgkey] [-M shmkey] [-S semkey] ... ]\n"),
progname);
}
int main(int argc, char **argv)
{
int c;
int error = 0;
char *prog = argv[0];
/* if the command is executed without parameters, do nothing */
if (argc == 1)
return 0;
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
/* check to see if the command is being invoked in the old way if so
then run the old code */
if (strcmp(argv[1], "shm") == 0 ||
strcmp(argv[1], "msg") == 0 ||
strcmp(argv[1], "sem") == 0)
return deprecated_main(argc, argv);
/* process new syntax to conform with SYSV ipcrm */
while ((c = getopt(argc, argv, "q:m:s:Q:M:S:")) != -1) {
int result;
int id = 0;
int iskey = isupper(c);
/* needed to delete semaphores */
union semun arg;
arg.val = 0;
/* we don't need case information any more */
c = tolower(c);
/* make sure the option is in range */
if (c != 'q' && c != 'm' && c != 's') {
usage(prog);
error++;
return error;
}
if (iskey) {
/* keys are in hex or decimal */
key_t key = strtoul(optarg, NULL, 0);
if (key == IPC_PRIVATE) {
error++;
fprintf(stderr, _("%s: illegal key (%s)\n"),
prog, optarg);
continue;
}
/* convert key to id */
id = ((c == 'q') ? msgget(key, 0) :
(c == 'm') ? shmget(key, 0, 0) :
semget(key, 0, 0));
if (id < 0) {
char *errmsg;
error++;
switch(errno) {
case EACCES:
errmsg = _("permission denied for key");
break;
case EIDRM:
errmsg = _("already removed key");
break;
case ENOENT:
errmsg = _("invalid key");
break;
default:
errmsg = _("unknown error in key");
break;
}
fprintf(stderr, "%s: %s (%s)\n",
prog, errmsg, optarg);
continue;
}
} else {
/* ids are in decimal */
id = strtoul(optarg, NULL, 10);
}
result = ((c == 'q') ? msgctl(id, IPC_RMID, NULL) :
(c == 'm') ? shmctl(id, IPC_RMID, NULL) :
semctl(id, 0, IPC_RMID, arg));
if (result < 0) {
char *errmsg;
error++;
switch(errno) {
case EACCES:
case EPERM:
errmsg = iskey
? _("permission denied for key")
: _("permission denied for id");
break;
case EINVAL:
errmsg = iskey
? _("invalid key")
: _("invalid id");
break;
case EIDRM:
errmsg = iskey
? _("already removed key")
: _("already removed id");
break;
default:
errmsg = iskey
? _("unknown error in key")
: _("unknown error in id");
break;
}
fprintf(stderr, _("%s: %s (%s)\n"),
prog, errmsg, optarg);
continue;
}
}
/* print usage if we still have some arguments left over */
if (optind != argc) {
fprintf(stderr, _("%s: unknown argument: %s\n"),
prog, argv[optind]);
usage(prog);
}
/* exit value reflects the number of errors encountered */
return error;
}
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