*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
+//config:config IPCS
+//config: bool "ipcs (11 kb)"
+//config: default y
+//config: select PLATFORM_LINUX
+//config: help
+//config: The ipcs utility is used to provide information on the currently
+//config: allocated System V interprocess (IPC) objects in the system.
-//usage:#define ipcs_trivial_usage
-//usage: "[[-smq] -i shmid] | [[-asmq] [-tcplu]]"
-//usage:#define ipcs_full_usage "\n\n"
-//usage: " -i Show specific resource"
-//usage: "\nResource specification:"
-//usage: "\n -m Shared memory segments"
-//usage: "\n -q Message queues"
-//usage: "\n -s Semaphore arrays"
-//usage: "\n -a All (default)"
-//usage: "\nOutput format:"
-//usage: "\n -t Time"
-//usage: "\n -c Creator"
-//usage: "\n -p Pid"
-//usage: "\n -l Limits"
-//usage: "\n -u Summary"
+//applet:IF_IPCS(APPLET_NOEXEC(ipcs, ipcs, BB_DIR_USR_BIN, BB_SUID_DROP, ipcs))
+
+//kbuild:lib-$(CONFIG_IPCS) += ipcs.o
/* 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() */
#define TIME 4
#define PID 5
-static char format;
-
static void print_perms(int id, struct ipc_perm *ipcp)
{
struct passwd *pw;
else printf(" %-10d\n", ipcp->gid);
}
-
-static NOINLINE void do_shm(void)
+static NOINLINE void do_shm(int format)
{
int maxid, shmid, id;
struct shmid_ds shmseg;
if ((shmctl(0, IPC_INFO, (struct shmid_ds *) (void *) &shminfo)) < 0)
return;
/* glibc 2.1.3 and all earlier libc's have ints as fields
- of struct shminfo; glibc 2.1.91 has unsigned long; ach */
+ * of struct shminfo; glibc 2.1.91 has unsigned long; ach */
printf("max number of segments = %lu\n"
"max seg size (kbytes) = %lu\n"
"max total shared memory (pages) = %lu\n"
case STATUS:
printf("------ Shared Memory %s --------\n", "Status");
printf("segments allocated %d\n"
- "pages allocated %ld\n"
- "pages resident %ld\n"
- "pages swapped %ld\n"
- "Swap performance: %ld attempts\t%ld successes\n",
+ "pages allocated %lu\n"
+ "pages resident %lu\n"
+ "pages swapped %lu\n"
+ "Swap performance: %lu attempts\t%lu successes\n",
shm_info.used_ids,
shm_info.shm_tot,
shm_info.shm_rss,
}
}
-
-static NOINLINE void do_sem(void)
+static NOINLINE void do_sem(int format)
{
int maxid, semid, id;
struct semid_ds semary;
}
}
-
-static NOINLINE void do_msg(void)
+static NOINLINE void do_msg(int format)
{
int maxid, msqid, id;
struct msqid_ds msgque;
}
}
-
static void print_shm(int shmid)
{
struct shmid_ds shmds;
printf("change_time=%-26.24s\n\n", ctime(&shmds.shm_ctime));
}
-
static void print_msg(int msqid)
{
struct msqid_ds buf;
if (val < 0 || ncnt < 0 || zcnt < 0 || pid < 0) {
bb_perror_msg_and_die("semctl");
}
- printf("%-10d %-10d %-10d %-10d %-10d\n", i, val, ncnt, zcnt, pid);
+ printf("%-10u %-10d %-10d %-10d %-10d\n", i, val, ncnt, zcnt, pid);
}
bb_putchar('\n');
}
+//usage:#define ipcs_trivial_usage
+//usage: "[[-smq] -i SHMID] | [[-asmq] [-tcplu]]"
+//usage:#define ipcs_full_usage "\n\n"
+//usage: " -i ID Show specific resource"
+//usage: "\nResource specification:"
+//usage: "\n -m Shared memory segments"
+//usage: "\n -q Message queues"
+//usage: "\n -s Semaphore arrays"
+//usage: "\n -a All (default)"
+//usage: "\nOutput format:"
+//usage: "\n -t Time"
+//usage: "\n -c Creator"
+//usage: "\n -p Pid"
+//usage: "\n -l Limits"
+//usage: "\n -u Summary"
+
int ipcs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int ipcs_main(int argc UNUSED_PARAM, char **argv)
{
- int id = 0;
- unsigned flags = 0;
+ int format = 0;
unsigned opt;
char *opt_i;
-#define flag_print (1<<0)
-#define flag_msg (1<<1)
-#define flag_sem (1<<2)
-#define flag_shm (1<<3)
opt = getopt32(argv, "i:aqsmtcplu", &opt_i);
- if (opt & 0x1) { // -i
+#define flag_msg (1<<2)
+#define flag_sem (1<<3)
+#define flag_shm (1<<4)
+ if (opt & (1<<5)) format = TIME; // -t
+ if (opt & (1<<6)) format = CREATOR; // -c
+ if (opt & (1<<7)) format = PID; // -p
+ if (opt & (1<<8)) format = LIMITS; // -l
+ if (opt & (1<<9)) format = STATUS; // -u
+
+ if (opt & (1<<0)) { // -i
+ int id;
+
id = xatoi(opt_i);
- flags |= flag_print;
- }
- if (opt & 0x2) flags |= flag_msg | flag_sem | flag_shm; // -a
- if (opt & 0x4) flags |= flag_msg; // -q
- if (opt & 0x8) flags |= flag_sem; // -s
- if (opt & 0x10) flags |= flag_shm; // -m
- if (opt & 0x20) format = TIME; // -t
- if (opt & 0x40) format = CREATOR; // -c
- if (opt & 0x80) format = PID; // -p
- if (opt & 0x100) format = LIMITS; // -l
- if (opt & 0x200) format = STATUS; // -u
-
- if (flags & flag_print) {
- if (flags & flag_shm) {
+ if (opt & flag_shm) {
print_shm(id);
fflush_stdout_and_exit(EXIT_SUCCESS);
}
- if (flags & flag_sem) {
+ if (opt & flag_sem) {
print_sem(id);
fflush_stdout_and_exit(EXIT_SUCCESS);
}
- if (flags & flag_msg) {
+ if (opt & flag_msg) {
print_msg(id);
fflush_stdout_and_exit(EXIT_SUCCESS);
}
bb_show_usage();
}
- if (!(flags & (flag_shm | flag_msg | flag_sem)))
- flags |= flag_msg | flag_shm | flag_sem;
+ if ((opt & (1<<1)) // -a
+ || !(opt & (flag_msg | flag_sem | flag_shm)) // none of -q,-s,-m == all
+ ) {
+ opt |= flag_msg | flag_sem | flag_shm;
+ }
+
bb_putchar('\n');
- if (flags & flag_shm) {
- do_shm();
+ if (opt & flag_msg) {
+ do_msg(format);
bb_putchar('\n');
}
- if (flags & flag_sem) {
- do_sem();
+ if (opt & flag_shm) {
+ do_shm(format);
bb_putchar('\n');
}
- if (flags & flag_msg) {
- do_msg();
+ if (opt & flag_sem) {
+ do_sem(format);
bb_putchar('\n');
}
fflush_stdout_and_exit(EXIT_SUCCESS);
projects / oweals / busybox.git / blobdiff