+/* vi: set sw=4 ts=4: */
/*
- * ipcrm.c -- utility to allow removal of IPC objects and data structures.
+ * 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
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
+#include "libbb.h"
-#include <sys/types.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() */
#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)
+#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;
+ unsigned short *array;
struct seminfo *__buf;
};
#endif
+#define IPCRM_LEGACY 1
+
+
+#if IPCRM_LEGACY
+
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;
+static int remove_ids(type_id type, int argc, char **argv)
+{
+ unsigned long id;
+ int ret = 0; /* silence gcc */
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 ++;
+ while (argc) {
+ id = bb_strtoul(argv[0], NULL, 10);
+ if (errno || id > INT_MAX) {
+ bb_error_msg("invalid id: %s", 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 (type == SEM)
+ ret = semctl(id, 0, IPC_RMID, arg);
+ else if (type == MSG)
+ ret = msgctl(id, IPC_RMID, NULL);
+ else if (type == SHM)
+ ret = shmctl(id, IPC_RMID, NULL);
if (ret) {
- bb_printf ("cannot remove id %s (%s)\n",
- argv[0], strerror(errno));
- nb_errors ++;
+ bb_perror_msg("cannot remove id %s", argv[0]);
+ nb_errors++;
}
}
argc--;
argv++;
}
- return(nb_errors);
-}
-
-static int deprecated_main(int argc, char **argv)
-{
- if (argc < 3) {
- bb_show_usage();
- bb_fflush_stdout_and_exit(1);
- }
-
- if (!strcmp(argv[1], "shm")) {
- if (remove_ids(SHM, argc-2, &argv[2]))
- bb_fflush_stdout_and_exit(1);
- }
- else if (!strcmp(argv[1], "msg")) {
- if (remove_ids(MSG, argc-2, &argv[2]))
- bb_fflush_stdout_and_exit(1);
- }
- else if (!strcmp(argv[1], "sem")) {
- if (remove_ids(SEM, argc-2, &argv[2]))
- bb_fflush_stdout_and_exit(1);
- }
- else {
- bb_printf ("unknown resource type: %s\n", argv[1]);
- bb_show_usage();
- bb_fflush_stdout_and_exit(1);
- }
-
- bb_printf ("resource(s) deleted\n");
- return 0;
+ return nb_errors;
}
+#endif /* IPCRM_LEGACY */
+int ipcrm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int ipcrm_main(int argc, char **argv)
{
- int c;
- int error = 0;
- char *prog = argv[0];
+ int c;
+ int error = 0;
/* if the command is executed without parameters, do nothing */
if (argc == 1)
return 0;
-
+#if IPCRM_LEGACY
/* 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);
+ then run the old code. Valid commands are msg, shm, sem. */
+ {
+ type_id what = 0; /* silence gcc */
+ char w;
+
+ w=argv[1][0];
+ if ( ((w == 'm' && argv[1][1] == 's' && argv[1][2] == 'g')
+ || (argv[1][0] == 's'
+ && ((w=argv[1][1]) == 'h' || w == 'e')
+ && argv[1][2] == 'm')
+ ) && argv[1][3] == '\0'
+ ) {
+
+ if (argc < 3)
+ bb_show_usage();
+
+ if (w == 'h')
+ what = SHM;
+ else if (w == 'm')
+ what = MSG;
+ else if (w == 'e')
+ what = SEM;
+
+ if (remove_ids(what, argc-2, &argv[2]))
+ fflush_stdout_and_exit(EXIT_FAILURE);
+ printf("resource(s) deleted\n");
+ return 0;
+ }
+ }
+#endif /* IPCRM_LEGACY */
/* process new syntax to conform with SYSV ipcrm */
while ((c = getopt(argc, argv, "q:m:s:Q:M:S:h?")) != -1) {
int result;
int id = 0;
- int iskey = isupper(c);
+ int iskey = (isupper)(c);
/* needed to delete semaphores */
union semun arg;
+
arg.val = 0;
- if ((c == '?') || (c == 'h'))
- {
+ if ((c == '?') || (c == 'h')) {
bb_show_usage();
- return 0;
}
/* we don't need case information any more */
c = tolower(c);
- /* make sure the option is in range */
+ /* make sure the option is in range: allowed are q, m, s */
if (c != 'q' && c != 'm' && c != 's') {
bb_show_usage();
- error++;
- return error;
}
if (iskey) {
/* keys are in hex or decimal */
- key_t key = strtoul(optarg, NULL, 0);
+ key_t key = xstrtoul(optarg, 0);
+
if (key == IPC_PRIVATE) {
error++;
- bb_fprintf(stderr, "%s: illegal key (%s)\n",
- prog, optarg);
+ bb_error_msg("illegal key (%s)", optarg);
continue;
}
/* convert key to id */
id = ((c == 'q') ? msgget(key, 0) :
- (c == 'm') ? shmget(key, 0, 0) :
- semget(key, 0, 0));
+ (c == 'm') ? shmget(key, 0, 0) : semget(key, 0, 0));
if (id < 0) {
- char *errmsg;
+ const char *errmsg;
+
error++;
- switch(errno) {
+ switch (errno) {
case EACCES:
- errmsg = "permission denied for key";
+ errmsg = "permission denied for";
break;
case EIDRM:
- errmsg = "already removed key";
+ errmsg = "already removed";
break;
case ENOENT:
- errmsg = "invalid key";
+ errmsg = "invalid";
break;
default:
- errmsg = "unknown error in key";
+ errmsg = "unknown error in";
break;
}
- bb_fprintf(stderr, "%s: %s (%s)\n",
- prog, errmsg, optarg);
+ bb_error_msg("%s %s (%s)", errmsg, "key", optarg);
continue;
}
} else {
/* ids are in decimal */
- id = strtoul(optarg, NULL, 10);
+ id = xatoul(optarg);
}
result = ((c == 'q') ? msgctl(id, IPC_RMID, NULL) :
- (c == 'm') ? shmctl(id, IPC_RMID, NULL) :
- semctl(id, 0, IPC_RMID, arg));
+ (c == 'm') ? shmctl(id, IPC_RMID, NULL) :
+ semctl(id, 0, IPC_RMID, arg));
+
+ if (result) {
+ const char *errmsg;
+ const char *const what = iskey ? "key" : "id";
- if (result < 0) {
- char *errmsg;
error++;
- switch(errno) {
+ switch (errno) {
case EACCES:
case EPERM:
- errmsg = iskey
- ? "permission denied for key"
- : "permission denied for id";
+ errmsg = "permission denied for";
break;
case EINVAL:
- errmsg = iskey
- ? "invalid key"
- : "invalid id";
+ errmsg = "invalid";
break;
case EIDRM:
- errmsg = iskey
- ? "already removed key"
- : "already removed id";
+ errmsg = "already removed";
break;
default:
- errmsg = iskey
- ? "unknown error in key"
- : "unknown error in id";
+ errmsg = "unknown error in";
break;
}
- bb_fprintf(stderr, "%s: %s (%s)\n",
- prog, errmsg, optarg);
+ bb_error_msg("%s %s (%s)", errmsg, what, optarg);
continue;
}
}
projects / oweals / busybox.git / blobdiff