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authorAshwini Sharma <ak.ashwini1981@gmail.com>2014-11-10 15:25:35 -0600
committerAshwini Sharma <ak.ashwini1981@gmail.com>2014-11-10 15:25:35 -0600
commit80cef2500a97db1343fa89dc544aef42befdff2e (patch)
treef9a58b1e02924a55ca9dacf0a7827fc7783816cf /toys/pending
parenteece7ed546d0e989b1e369c8f9f34b906d473e8a (diff)
downloadtoybox-80cef2500a97db1343fa89dc544aef42befdff2e.tar.gz
ipcrm : remove msg que, sem or shared memory
Diffstat (limited to 'toys/pending')
-rw-r--r--toys/pending/ipcrm.c91
1 files changed, 91 insertions, 0 deletions
diff --git a/toys/pending/ipcrm.c b/toys/pending/ipcrm.c
new file mode 100644
index 00000000..21f436d3
--- /dev/null
+++ b/toys/pending/ipcrm.c
@@ -0,0 +1,91 @@
+/* ipcrm.c - remove msg que, sem or shared memory
+ *
+ * Copyright 2014 Ashwini Kumar <ak.ashwini1981@gmail.com>
+ *
+ * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ipcrm.html
+
+
+USE_IPCRM(NEWTOY(ipcrm, "m*M*s*S*q*Q*", TOYFLAG_USR|TOYFLAG_BIN))
+
+config IPCRM
+ bool "ipcrm"
+ default n
+ help
+ usage: ipcrm [ [-q msqid] [-m shmid] [-s semid]
+ [-Q msgkey] [-M shmkey] [-S semkey] ... ]
+
+ -mM Remove memory segment after last detach
+ -qQ Remove message queue
+ -sS Remove semaphore
+*/
+
+#define FOR_ipcrm
+#include "toys.h"
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <sys/sem.h>
+#include <sys/msg.h>
+
+GLOBALS(
+ struct arg_list *qkey;
+ struct arg_list *qid;
+ struct arg_list *skey;
+ struct arg_list *sid;
+ struct arg_list *mkey;
+ struct arg_list *mid;
+)
+
+static void do_ipcrm(int key, int ipc, char *name)
+{
+ char *c;
+ int id, ret = 0;
+
+ id = strtol(name, &c, 0);
+ if (*c) {
+ error_msg("invalid number :%s", name);
+ return;
+ }
+
+ if (key) {
+ if (id == IPC_PRIVATE) {
+ error_msg("illegal key (%s)", name);
+ return;
+ }
+ id = ((ipc == 1)?shmget(id, 0, 0) :
+ (ipc == 2)? msgget(id, 0): semget(id, 0, 0));
+ if (id < 0) {
+ perror_msg("key (%s)", name);
+ return;
+ }
+ }
+
+ if (ipc == 1) ret = shmctl(id, IPC_RMID, NULL);
+ else if (ipc == 2) ret = msgctl(id, IPC_RMID, NULL);
+ else if (ipc == 3) ret = semctl(id, 0, IPC_RMID, NULL);
+
+ if (ret < 0) perror_msg("%s (%s)", ((key)? "key": "id"), name);
+}
+
+void ipcrm_main(void)
+{
+ ++toys.argv;
+ if (toys.optc && (!strcmp(*toys.argv, "shm") ||
+ !strcmp(*toys.argv, "sem") || !strcmp(*toys.argv, "msg"))) {
+ int t = (toys.argv[0][1] == 'h')? 1 : (toys.argv[0][1] == 's')? 2:3;
+
+ while (*(++toys.argv)) do_ipcrm(0, t, *toys.argv);
+ } else {
+ struct arg_list *tmp;
+
+ for (tmp = TT.mkey; tmp; tmp = tmp->next) do_ipcrm(1, 1, tmp->arg);
+ for (tmp = TT.mid; tmp; tmp = tmp->next) do_ipcrm(0, 1, tmp->arg);
+ for (tmp = TT.qkey; tmp; tmp = tmp->next) do_ipcrm(1, 2, tmp->arg);
+ for (tmp = TT.qid; tmp; tmp = tmp->next) do_ipcrm(0, 2, tmp->arg);
+ for (tmp = TT.skey; tmp; tmp = tmp->next) do_ipcrm(1, 3, tmp->arg);
+ for (tmp = TT.sid; tmp; tmp = tmp->next) do_ipcrm(0, 3, tmp->arg);
+ if (toys.optc) {
+ toys.exithelp++;
+ error_exit("unknown argument: %s", *toys.optargs);
+ }
+ }
+}