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Rodney Radford submitted ipcs and ipcrm (system V IPC stuff). They co…

…uld use

some more work to shrink them down.
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commit 6eb1e416743c597f8ecd3b595ddb00d3aa42c1f4 1 parent df1eda8
@landley landley authored
View
3  AUTHORS
@@ -113,6 +113,9 @@ Bruce Perens <bruce@pixar.com>
Original author of BusyBox in 1995, 1996. Some of his code can
still be found hiding here and there...
+Rodney Radford <rradford@mindspring.com>
+ ipcs, ipcrm
+
Tim Riker <Tim@Rikers.org>
bug fixes, member of fan club
View
18 docs/busybox_header.pod
@@ -89,15 +89,15 @@ Currently defined functions include:
fgrep, find, fold, free, freeramdisk, fsck.minix, ftpget, ftpput, getopt,
getty, grep, gunzip, gzip, halt, hdparm, head, hexdump, hostid, hostname,
httpd, hush, hwclock, id, ifconfig, ifdown, ifup, inetd, init, insmod,
- install, ip, ipaddr, ipcalc, iplink, iproute, iptunnel, kill, killall,
- klogd, lash, last, length, linuxrc, ln, loadfont, loadkmap, logger, login,
- logname, logread, losetup, ls, lsmod, makedevs, md5sum, mesg, mkdir,
- mkfifo, mkfs.minix, mknod, mkswap, mktemp, modprobe, more, mount, msh, mt,
- mv, nameif, nc, netstat, nslookup, od, openvt, passwd, patch, pidof, ping,
- ping6, pipe_progress, pivot_root, poweroff, printf, ps, pwd, rdate,
- readlink, realpath, reboot, renice, reset, rm, rmdir, rmmod, route, rpm,
- rpm2cpio, run-parts, rx, sed, seq, setkeycodes, sha1sum, sleep, sort,
- start-stop-daemon, strings, stty, su, sulogin, swapoff, swapon, sync,
+ install, ip, ipaddr, ipcalc, ipcrm, ipcs, iplink, iproute, iptunnel, kill,
+ killall, klogd, lash, last, length, linuxrc, ln, loadfont, loadkmap,
+ logger, login, logname, logread, losetup, ls, lsmod, makedevs, md5sum,
+ mesg, mkdir, mkfifo, mkfs.minix, mknod, mkswap, mktemp, modprobe, more,
+ mount, msh, mt, mv, nameif, nc, netstat, nslookup, od, openvt, passwd,
+ patch, pidof, ping, ping6, pipe_progress, pivot_root, poweroff, printf, ps,
+ pwd, rdate, readlink, realpath, reboot, renice, reset, rm, rmdir, rmmod,
+ route, rpm, rpm2cpio, run-parts, rx, sed, seq, setkeycodes, sha1sum, sleep,
+ sort, start-stop-daemon, strings, stty, su, sulogin, swapoff, swapon, sync,
sysctl, syslogd, tail, tar, tee, telnet, telnetd, test, tftp, time, top,
touch, tr, traceroute, true, tty, udhcpc, udhcpd, umount, uname,
uncompress, uniq, unix2dos, unzip, uptime, usleep, uudecode, uuencode,
View
6 include/applets.h
@@ -320,6 +320,12 @@
#ifdef CONFIG_IPCALC
APPLET(ipcalc, ipcalc_main, _BB_DIR_BIN, _BB_SUID_NEVER)
#endif
+#ifdef CONFIG_IPCRM
+ APPLET(ipcrm, ipcrm_main, _BB_DIR_USR_BIN, _BB_SUID_ALWAYS)
+#endif
+#ifdef CONFIG_IPCS
+ APPLET(ipcs, ipcs_main, _BB_DIR_USR_BIN, _BB_SUID_ALWAYS)
+#endif
#ifdef CONFIG_IPLINK
APPLET(iplink, iplink_main, _BB_DIR_BIN, _BB_SUID_NEVER)
#endif
View
42 include/usage.h
@@ -1395,6 +1395,32 @@
"\t-h\t--hostname\tDisplay first resolved host name\n" \
"\t-s\t--silent\tDon't ever display error messages.")
+#define ipcrm_trivial_usage \
+ "[-[MQS] key] [-[mqs] id]"
+#define ipcrm_full_usage \
+ "The upper-case options MQS are used to remove a shared memory\n" \
+ "segment by an shmkey value. The lower-case options mqs are used\n" \
+ "to remove a segment by shmid value.\n" \
+ "\t-m | -M\tRemove the memory segment after the last detatch\n" \
+ "\t-q | -Q\tRemove the message queue\n" \
+ "\t-s | -S\tRemove the semaphore\n"
+
+#define ipcs_trivial_usage \
+ "[[-smq] -i shmid] | [[-asmq] [-tclup]]"
+#define ipcs_full_usage \
+ "\t-i\tspecify a specific resource id\n" \
+ "Resource specification:\n" \
+ "\t-m\tshared memory segments\n" \
+ "\t-q\tmessage queues\n" \
+ "\t-s\tsempahore arrays\n" \
+ "\t-a\tall (default)\n" \
+ "Output format:\n" \
+ "\t-t\ttime\n" \
+ "\t-p\tpid\n" \
+ "\t-s\tcreator\n" \
+ "\t-a\tlimits\n" \
+ "\t-i\tsummary\n"
+
#define iplink_trivial_usage \
"{ set DEVICE { up | down | arp { on | off } | show [ DEVICE ] }"
#define iplink_full_usage \
@@ -2080,18 +2106,30 @@
"$ printf \"Val=%d\\n\" 5\n" \
"Val=5\n"
+#if !defined(CONFIG_SELINUX) && !defined(CONFIG_PS_FEATURE_WIDE)
+#define USAGE_PS "\n\tThis version of ps accepts no options."
+#else
+#define USAGE_PS "\nOptions:"
+#endif
#ifdef CONFIG_SELINUX
#define USAGE_NONSELINUX(a)
#else
#define USAGE_NONSELINUX(a) a
#endif
+#ifdef CONFIG_PS_FEATURE_WIDE
+#define USAGE_PS_WIDE(a) a
+#else
+#define USAGE_PS_WIDE(a)
+#endif
#define ps_trivial_usage \
""
#define ps_full_usage \
"Report process status\n" \
- USAGE_NONSELINUX("\n\tThis version of ps accepts no options.") \
- USAGE_SELINUX("\nOptions:\n\t-c\tshow SE Linux context")
+ USAGE_PS \
+ USAGE_SELINUX("\n\t-c\tshow SE Linux context") \
+ USAGE_PS_WIDE("\n\tw\twide output")
+
#define ps_example_usage \
"$ ps\n" \
View
2  sysdeps/linux/defconfig
@@ -397,6 +397,8 @@ CONFIG_DMESG=y
# CONFIG_GETOPT is not set
CONFIG_HEXDUMP=y
# CONFIG_HWCLOCK is not set
+# CONFIG_IPCRM is not set
+# CONFIG_IPCS is not set
# CONFIG_LOSETUP is not set
# CONFIG_MKSWAP is not set
CONFIG_MORE=y
View
45 util-linux/Config.in
@@ -216,6 +216,21 @@ config CONFIG_LOSETUP
file or block device, and to query the status of a loop device. This
version does not currently support enabling data encryption.
+config CONFIG_IPCRM
+ bool "ipcrm"
+ default n
+ help
+ The ipcrm utility allows the removal of System V interprocess
+ communication (IPC) objects and the associated data structures
+ from the system.
+
+config CONFIG_IPCS
+ bool "ipcs"
+ default n
+ help
+ The ipcs utility is used to provide information on the currently
+ allocated System V interprocess (IPC) objects in the system.
+
config CONFIG_MKSWAP
bool "mkswap"
default n
@@ -322,14 +337,18 @@ config CONFIG_FEATURE_MOUNT_LOOP
default n
depends on CONFIG_MOUNT || CONFIG_UMOUNT
help
- Enabling this feature allows mount to use the '-o' loop options,
- which lets you loop mount files. Mount will automagically setup and
- free the necessary loop devices so you do not need to mess with the
- 'losetup' utility unless you really want to. This is really
- only useful if you plan to loop mount files.
+ Enabling this feature allows automatic loopback mounts, meaning you can mount
+ filesystems contained in normal files as well as in block devices. The mount
+ and umount commands will detect you are trying to mount a file instead of a
+ block device, and transparently associate it with a loopback device (and free
+ the loopback device on unmount) for you.
+
+ You can still use the 'losetup' utility and mount the loopback device yourself
+ if you need to do something advanced, such as specify an offset or cryptographic
+ options to the loopback device.
config CONFIG_FEATURE_MTAB_SUPPORT
- bool " Support for a real /etc/mtab (instead of /proc/mounts)"
+ bool " Support for a /etc/mtab file (instead of symlink to /proc/mounts)"
default n
depends on CONFIG_MOUNT || CONFIG_UMOUNT
help
@@ -339,17 +358,9 @@ config CONFIG_FEATURE_MTAB_SUPPORT
BusyBox have a read-only root filesystem, so they will leave this
option disabled and BusyBox will use the /proc/mounts file.
-config CONFIG_FEATURE_MTAB_FILENAME
- string " mtab file location"
- default "/etc/mtab"
- depends on CONFIG_FEATURE_MTAB_SUPPORT
- help
- Some people have a read only root filesystem, but they also wish to
- have the 'mount' utility create an mtab file listing the filesystems
- which have been mounted. This option allows you to specify an alternative
- location for the mtab file, such as /var/mtab, or /tmp/mtab. The default
- value is /etc/mtab, which is where this file is located on most desktop
- Linux systems.
+ Note that even non-embedded developers probably want to have /etc/mtab
+ be a symlink to /proc/mounts, since otherwise mtab can get out of sync
+ with the real kernel mount state in numerous ways.
config CONFIG_READPROFILE
bool "readprofile"
View
2  util-linux/Makefile.in
@@ -34,6 +34,8 @@ UTILLINUX-$(CONFIG_FSCK_MINIX) +=fsck_minix.o
UTILLINUX-$(CONFIG_GETOPT) +=getopt.o
UTILLINUX-$(CONFIG_HEXDUMP) +=hexdump.o
UTILLINUX-$(CONFIG_HWCLOCK) +=hwclock.o
+UTILLINUX-$(CONFIG_IPCRM) +=ipcrm.o
+UTILLINUX-$(CONFIG_IPCS) +=ipcs.o
UTILLINUX-$(CONFIG_LOSETUP) +=losetup.o
UTILLINUX-$(CONFIG_MKFS_MINIX) +=mkfs_minix.o
UTILLINUX-$(CONFIG_MKSWAP) +=mkswap.o
View
273 util-linux/ipcrm.c
@@ -0,0 +1,273 @@
+/*
+ * 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
+ */
+
+#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>
+
+/* 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)
+/* 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;
+ struct seminfo *__buf;
+};
+#endif
+
+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) {
+ bb_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) {
+ bb_printf ("cannot remove id %s (%s)\n",
+ argv[0], strerror(errno));
+ 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;
+}
+
+
+int ipcrm_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;
+
+ /* 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:h?")) != -1) {
+ int result;
+ int id = 0;
+ int iskey = isupper(c);
+
+ /* needed to delete semaphores */
+ union semun arg;
+ arg.val = 0;
+
+ 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 */
+ 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);
+ if (key == IPC_PRIVATE) {
+ error++;
+ bb_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;
+ }
+ bb_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;
+ }
+ bb_fprintf(stderr, "%s: %s (%s)\n",
+ prog, errmsg, optarg);
+ continue;
+ }
+ }
+
+ /* print usage if we still have some arguments left over */
+ if (optind != argc) {
+ bb_show_usage();
+ }
+
+ /* exit value reflects the number of errors encountered */
+ return error;
+}
View
686 util-linux/ipcs.c
@@ -0,0 +1,686 @@
+/*
+ * ipcs.c -- provides information on allocated ipc resources.
+ *
+ * 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 ------------------------
+ *
+ * 1999-02-22 Arkadiusz Miÿkiewicz <misiek@pld.ORG.PL>
+ * - added Native Language Support
+ *
+ * Patched to display the key field -- hy@picksys.com 12/18/96
+ *
+ * Patch from arnolds@ifns.de (Heinz-Ado Arnolds) applied Mon Jul 1
+ * 19:30:41 1996 by janl@math.uio.no to add code missing in case PID:
+ * clauses.
+ *
+ * Patches from Mike Jagdis (jaggy@purplet.demon.co.uk) applied
+ * Wed Feb 8 12:12:21 1995 by faith@cs.unc.edu to print numeric uids
+ * if no passwd file entry.
+ *
+ * Modified Sat Oct 9 10:55:28 1993 for 0.99.13
+ * Original author unknown, may be "krishna balasub@cis.ohio-state.edu"
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <errno.h>
+#include <time.h>
+#include <pwd.h>
+#include <grp.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() */
+/* X/OPEN tells us to use <sys/{types,ipc,shm}.h> for shmctl() */
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/sem.h>
+#include <sys/msg.h>
+#include <sys/shm.h>
+
+#include "busybox.h"
+
+/*-------------------------------------------------------------------*/
+/* SHM_DEST and SHM_LOCKED are defined in kernel headers,
+ but inside #ifdef __KERNEL__ ... #endif */
+#ifndef SHM_DEST
+/* shm_mode upper byte flags */
+#define SHM_DEST 01000 /* segment will be destroyed on last detach */
+#define SHM_LOCKED 02000 /* segment will not be swapped */
+#endif
+
+/* For older kernels the same holds for the defines below */
+#ifndef MSG_STAT
+#define MSG_STAT 11
+#define MSG_INFO 12
+#endif
+
+#ifndef SHM_STAT
+#define SHM_STAT 13
+#define SHM_INFO 14
+struct shm_info {
+ int used_ids;
+ ulong shm_tot; /* total allocated shm */
+ ulong shm_rss; /* total resident shm */
+ ulong shm_swp; /* total swapped shm */
+ ulong swap_attempts;
+ ulong swap_successes;
+};
+#endif
+
+#ifndef SEM_STAT
+#define SEM_STAT 18
+#define SEM_INFO 19
+#endif
+
+/* Some versions of libc only define IPC_INFO when __USE_GNU is defined. */
+#ifndef IPC_INFO
+#define IPC_INFO 3
+#endif
+/*-------------------------------------------------------------------*/
+
+/* The last arg of semctl is a union semun, but where is it defined?
+ X/OPEN tells us to define it ourselves, but until recently
+ Linux include files would also define it. */
+#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;
+ struct seminfo *__buf;
+};
+#endif
+
+/* X/OPEN (Jan 1987) does not define fields key, seq in struct ipc_perm;
+ libc 4/5 does not mention struct ipc_term at all, but includes
+ <linux/ipc.h>, which defines a struct ipc_perm with such fields.
+ glibc-1.09 has no support for sysv ipc.
+ glibc 2 uses __key, __seq */
+#if defined (__GNU_LIBRARY__) && __GNU_LIBRARY__ > 1
+#define KEY __key
+#else
+#define KEY key
+#endif
+
+#define LIMITS 1
+#define STATUS 2
+#define CREATOR 3
+#define TIME 4
+#define PID 5
+
+void do_shm (char format);
+void do_sem (char format);
+void do_msg (char format);
+void print_shm (int id);
+void print_msg (int id);
+void print_sem (int id);
+
+int ipcs_main (int argc, char **argv) {
+ int opt, msg = 0, sem = 0, shm = 0, id=0, print=0;
+ char format = 0;
+ char options[] = "atclupsmqi:ih?";
+
+ while ((opt = getopt (argc, argv, options)) != -1) {
+ switch (opt) {
+ case 'i':
+ id = atoi (optarg);
+ print = 1;
+ break;
+ case 'a':
+ msg = shm = sem = 1;
+ break;
+ case 'q':
+ msg = 1;
+ break;
+ case 's':
+ sem = 1;
+ break;
+ case 'm':
+ shm = 1;
+ break;
+ case 't':
+ format = TIME;
+ break;
+ case 'c':
+ format = CREATOR;
+ break;
+ case 'p':
+ format = PID;
+ break;
+ case 'l':
+ format = LIMITS;
+ break;
+ case 'u':
+ format = STATUS;
+ break;
+ case 'h':
+ case '?':
+ bb_show_usage();
+ bb_fflush_stdout_and_exit (0);
+ }
+ }
+
+ if (print) {
+ if (shm) {
+ print_shm (id);
+ bb_fflush_stdout_and_exit (0);
+ }
+ if (sem) {
+ print_sem (id);
+ bb_fflush_stdout_and_exit (0);
+ }
+ if (msg) {
+ print_msg (id);
+ bb_fflush_stdout_and_exit (0);
+ }
+ bb_show_usage();
+ bb_fflush_stdout_and_exit (0);
+ }
+
+ if ( !shm && !msg && !sem)
+ msg = sem = shm = 1;
+ bb_printf ("\n");
+
+ if (shm) {
+ do_shm (format);
+ bb_printf ("\n");
+ }
+ if (sem) {
+ do_sem (format);
+ bb_printf ("\n");
+ }
+ if (msg) {
+ do_msg (format);
+ bb_printf ("\n");
+ }
+ return 0;
+}
+
+
+static void
+print_perms (int id, struct ipc_perm *ipcp) {
+ struct passwd *pw;
+ struct group *gr;
+
+ bb_printf ("%-10d %-10o", id, ipcp->mode & 0777);
+
+ if ((pw = getpwuid(ipcp->cuid)))
+ bb_printf(" %-10s", pw->pw_name);
+ else
+ bb_printf(" %-10d", ipcp->cuid);
+ if ((gr = getgrgid(ipcp->cgid)))
+ bb_printf(" %-10s", gr->gr_name);
+ else
+ bb_printf(" %-10d", ipcp->cgid);
+
+ if ((pw = getpwuid(ipcp->uid)))
+ bb_printf(" %-10s", pw->pw_name);
+ else
+ bb_printf(" %-10d", ipcp->uid);
+ if ((gr = getgrgid(ipcp->gid)))
+ bb_printf(" %-10s\n", gr->gr_name);
+ else
+ bb_printf(" %-10d\n", ipcp->gid);
+}
+
+
+void do_shm (char format)
+{
+ int maxid, shmid, id;
+ struct shmid_ds shmseg;
+ struct shm_info shm_info;
+ struct shminfo shminfo;
+ struct ipc_perm *ipcp = &shmseg.shm_perm;
+ struct passwd *pw;
+
+ maxid = shmctl (0, SHM_INFO, (struct shmid_ds *) (void *) &shm_info);
+ if (maxid < 0) {
+ bb_printf ("kernel not configured for shared memory\n");
+ return;
+ }
+
+ switch (format) {
+ case LIMITS:
+ bb_printf ("------ Shared Memory Limits --------\n");
+ 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 */
+ bb_printf ("max number of segments = %lu\n",
+ (unsigned long) shminfo.shmmni);
+ bb_printf ("max seg size (kbytes) = %lu\n",
+ (unsigned long) (shminfo.shmmax >> 10));
+ bb_printf ("max total shared memory (pages) = %lu\n",
+ (unsigned long) shminfo.shmall);
+ bb_printf ("min seg size (bytes) = %lu\n",
+ (unsigned long) shminfo.shmmin);
+ return;
+
+ case STATUS:
+ bb_printf ("------ Shared Memory Status --------\n");
+ bb_printf ("segments allocated %d\n", shm_info.used_ids);
+ bb_printf ("pages allocated %ld\n", shm_info.shm_tot);
+ bb_printf ("pages resident %ld\n", shm_info.shm_rss);
+ bb_printf ("pages swapped %ld\n", shm_info.shm_swp);
+ bb_printf ("Swap performance: %ld attempts\t %ld successes\n",
+ shm_info.swap_attempts, shm_info.swap_successes);
+ return;
+
+ case CREATOR:
+ bb_printf ("------ Shared Memory Segment Creators/Owners --------\n");
+ bb_printf ("%-10s %-10s %-10s %-10s %-10s %-10s\n",
+ "shmid","perms","cuid","cgid","uid","gid");
+ break;
+
+ case TIME:
+ bb_printf ("------ Shared Memory Attach/Detach/Change Times --------\n");
+ bb_printf ("%-10s %-10s %-20s %-20s %-20s\n",
+ "shmid","owner","attached","detached","changed");
+ break;
+
+ case PID:
+ bb_printf ("------ Shared Memory Creator/Last-op --------\n");
+ bb_printf ("%-10s %-10s %-10s %-10s\n",
+ "shmid","owner","cpid","lpid");
+ break;
+
+ default:
+ bb_printf ("------ Shared Memory Segments --------\n");
+ bb_printf ("%-10s %-10s %-10s %-10s %-10s %-10s %-12s\n",
+ "key","shmid","owner","perms","bytes","nattch","status");
+ break;
+ }
+
+ for (id = 0; id <= maxid; id++) {
+ shmid = shmctl (id, SHM_STAT, &shmseg);
+ if (shmid < 0)
+ continue;
+ if (format == CREATOR) {
+ print_perms (shmid, ipcp);
+ continue;
+ }
+ pw = getpwuid(ipcp->uid);
+ switch (format) {
+ case TIME:
+ if (pw)
+ bb_printf ("%-10d %-10.10s", shmid, pw->pw_name);
+ else
+ bb_printf ("%-10d %-10d", shmid, ipcp->uid);
+ /* ctime uses static buffer: use separate calls */
+ bb_printf(" %-20.16s", shmseg.shm_atime
+ ? ctime(&shmseg.shm_atime) + 4 : "Not set");
+ bb_printf(" %-20.16s", shmseg.shm_dtime
+ ? ctime(&shmseg.shm_dtime) + 4 : "Not set");
+ bb_printf(" %-20.16s\n", shmseg.shm_ctime
+ ? ctime(&shmseg.shm_ctime) + 4 : "Not set");
+ break;
+ case PID:
+ if (pw)
+ bb_printf ("%-10d %-10.10s", shmid, pw->pw_name);
+ else
+ bb_printf ("%-10d %-10d", shmid, ipcp->uid);
+ bb_printf (" %-10d %-10d\n",
+ shmseg.shm_cpid, shmseg.shm_lpid);
+ break;
+
+ default:
+ bb_printf("0x%08x ",ipcp->KEY );
+ if (pw)
+ bb_printf ("%-10d %-10.10s", shmid, pw->pw_name);
+ else
+ bb_printf ("%-10d %-10d", shmid, ipcp->uid);
+ bb_printf ("%-10o %-10lu %-10ld %-6s %-6s\n",
+ ipcp->mode & 0777,
+ /*
+ * earlier: int, Austin has size_t
+ */
+ (unsigned long) shmseg.shm_segsz,
+ /*
+ * glibc-2.1.3 and earlier has unsigned short;
+ * Austin has shmatt_t
+ */
+ (long) shmseg.shm_nattch,
+ ipcp->mode & SHM_DEST ? "dest" : " ",
+ ipcp->mode & SHM_LOCKED ? "locked" : " ");
+ break;
+ }
+ }
+ return;
+}
+
+
+void do_sem (char format)
+{
+ int maxid, semid, id;
+ struct semid_ds semary;
+ struct seminfo seminfo;
+ struct ipc_perm *ipcp = &semary.sem_perm;
+ struct passwd *pw;
+ union semun arg;
+
+ arg.array = (ushort *) (void *) &seminfo;
+ maxid = semctl (0, 0, SEM_INFO, arg);
+ if (maxid < 0) {
+ bb_printf ("kernel not configured for semaphores\n");
+ return;
+ }
+
+ switch (format) {
+ case LIMITS:
+ bb_printf ("------ Semaphore Limits --------\n");
+ arg.array = (ushort *) (void *) &seminfo; /* damn union */
+ if ((semctl (0, 0, IPC_INFO, arg)) < 0 )
+ return;
+ bb_printf ("max number of arrays = %d\n", seminfo.semmni);
+ bb_printf ("max semaphores per array = %d\n", seminfo.semmsl);
+ bb_printf ("max semaphores system wide = %d\n", seminfo.semmns);
+ bb_printf ("max ops per semop call = %d\n", seminfo.semopm);
+ bb_printf ("semaphore max value = %d\n", seminfo.semvmx);
+ return;
+
+ case STATUS:
+ bb_printf ("------ Semaphore Status --------\n");
+ bb_printf ("used arrays = %d\n", seminfo.semusz);
+ bb_printf ("allocated semaphores = %d\n", seminfo.semaem);
+ return;
+
+ case CREATOR:
+ bb_printf ("------ Semaphore Arrays Creators/Owners --------\n");
+ bb_printf ("%-10s %-10s %-10s %-10s %-10s %-10s\n",
+ "semid","perms","cuid","cgid","uid","gid");
+ break;
+
+ case TIME:
+ bb_printf ("------ Shared Memory Operation/Change Times --------\n");
+ bb_printf ("%-8s %-10s %-26.24s %-26.24s\n",
+ "shmid","owner","last-op","last-changed");
+ break;
+
+ case PID:
+ break;
+
+ default:
+ bb_printf ("------ Semaphore Arrays --------\n");
+ bb_printf ("%-10s %-10s %-10s %-10s %-10s\n",
+ "key","semid","owner","perms","nsems");
+ break;
+ }
+
+ for (id = 0; id <= maxid; id++) {
+ arg.buf = (struct semid_ds *) &semary;
+ semid = semctl (id, 0, SEM_STAT, arg);
+ if (semid < 0)
+ continue;
+ if (format == CREATOR) {
+ print_perms (semid, ipcp);
+ continue;
+ }
+ pw = getpwuid(ipcp->uid);
+ switch (format) {
+ case TIME:
+ if (pw)
+ bb_printf ("%-8d %-10.10s", semid, pw->pw_name);
+ else
+ bb_printf ("%-8d %-10d", semid, ipcp->uid);
+ bb_printf (" %-26.24s", semary.sem_otime
+ ? ctime(&semary.sem_otime) : "Not set");
+ bb_printf (" %-26.24s\n", semary.sem_ctime
+ ? ctime(&semary.sem_ctime) : "Not set");
+ break;
+ case PID:
+ break;
+
+ default:
+ bb_printf("0x%08x ", ipcp->KEY);
+ if (pw)
+ bb_printf ("%-10d %-10.9s", semid, pw->pw_name);
+ else
+ bb_printf ("%-10d %-9d", semid, ipcp->uid);
+ bb_printf ("%-10o %-10ld\n",
+ ipcp->mode & 0777,
+ /*
+ * glibc-2.1.3 and earlier has unsigned short;
+ * glibc-2.1.91 has variation between
+ * unsigned short and unsigned long
+ * Austin prescribes unsigned short.
+ */
+ (long) semary.sem_nsems);
+ break;
+ }
+ }
+}
+
+
+void do_msg (char format)
+{
+ int maxid, msqid, id;
+ struct msqid_ds msgque;
+ struct msginfo msginfo;
+ struct ipc_perm *ipcp = &msgque.msg_perm;
+ struct passwd *pw;
+
+ maxid = msgctl (0, MSG_INFO, (struct msqid_ds *) (void *) &msginfo);
+ if (maxid < 0) {
+ bb_printf ("kernel not configured for message queues\n");
+ return;
+ }
+
+ switch (format) {
+ case LIMITS:
+ if ((msgctl (0, IPC_INFO, (struct msqid_ds *) (void *) &msginfo)) < 0 )
+ return;
+ bb_printf ("------ Messages: Limits --------\n");
+ bb_printf ("max queues system wide = %d\n", msginfo.msgmni);
+ bb_printf ("max size of message (bytes) = %d\n", msginfo.msgmax);
+ bb_printf ("default max size of queue (bytes) = %d\n", msginfo.msgmnb);
+ return;
+
+ case STATUS:
+ bb_printf ("------ Messages: Status --------\n");
+ bb_printf ("allocated queues = %d\n", msginfo.msgpool);
+ bb_printf ("used headers = %d\n", msginfo.msgmap);
+ bb_printf ("used space = %d bytes\n", msginfo.msgtql);
+ return;
+
+ case CREATOR:
+ bb_printf ("------ Message Queues: Creators/Owners --------\n");
+ bb_printf ("%-10s %-10s %-10s %-10s %-10s %-10s\n",
+ "msqid","perms","cuid","cgid","uid","gid");
+ break;
+
+ case TIME:
+ bb_printf ("------ Message Queues Send/Recv/Change Times --------\n");
+ bb_printf ("%-8s %-10s %-20s %-20s %-20s\n",
+ "msqid","owner","send","recv","change");
+ break;
+
+ case PID:
+ bb_printf ("------ Message Queues PIDs --------\n");
+ bb_printf ("%-10s %-10s %-10s %-10s\n",
+ "msqid","owner","lspid","lrpid");
+ break;
+
+ default:
+ bb_printf ("------ Message Queues --------\n");
+ bb_printf ("%-10s %-10s %-10s %-10s %-12s %-12s\n",
+ "key", "msqid", "owner", "perms","used-bytes", "messages");
+ break;
+ }
+
+ for (id = 0; id <= maxid; id++) {
+ msqid = msgctl (id, MSG_STAT, &msgque);
+ if (msqid < 0)
+ continue;
+ if (format == CREATOR) {
+ print_perms (msqid, ipcp);
+ continue;
+ }
+ pw = getpwuid(ipcp->uid);
+ switch (format) {
+ case TIME:
+ if (pw)
+ bb_printf ("%-8d %-10.10s", msqid, pw->pw_name);
+ else
+ bb_printf ("%-8d %-10d", msqid, ipcp->uid);
+ bb_printf (" %-20.16s", msgque.msg_stime
+ ? ctime(&msgque.msg_stime) + 4 : "Not set");
+ bb_printf (" %-20.16s", msgque.msg_rtime
+ ? ctime(&msgque.msg_rtime) + 4 : "Not set");
+ bb_printf (" %-20.16s\n", msgque.msg_ctime
+ ? ctime(&msgque.msg_ctime) + 4 : "Not set");
+ break;
+ case PID:
+ if (pw)
+ bb_printf ("%-8d %-10.10s", msqid, pw->pw_name);
+ else
+ bb_printf ("%-8d %-10d", msqid, ipcp->uid);
+ bb_printf (" %5d %5d\n",
+ msgque.msg_lspid, msgque.msg_lrpid);
+ break;
+
+ default:
+ bb_printf( "0x%08x ",ipcp->KEY );
+ if (pw)
+ bb_printf ("%-10d %-10.10s", msqid, pw->pw_name);
+ else
+ bb_printf ("%-10d %-10d", msqid, ipcp->uid);
+ bb_printf (" %-10o %-12ld %-12ld\n",
+ ipcp->mode & 0777,
+ /*
+ * glibc-2.1.3 and earlier has unsigned short;
+ * glibc-2.1.91 has variation between
+ * unsigned short, unsigned long
+ * Austin has msgqnum_t
+ */
+ (long) msgque.msg_cbytes,
+ (long) msgque.msg_qnum);
+ break;
+ }
+ }
+ return;
+}
+
+
+void print_shm (int shmid)
+{
+ struct shmid_ds shmds;
+ struct ipc_perm *ipcp = &shmds.shm_perm;
+
+ if (shmctl (shmid, IPC_STAT, &shmds) == -1) {
+ perror ("shmctl ");
+ return;
+ }
+
+ bb_printf ("\nShared memory Segment shmid=%d\n", shmid);
+ bb_printf ("uid=%d\tgid=%d\tcuid=%d\tcgid=%d\n",
+ ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid);
+ bb_printf ("mode=%#o\taccess_perms=%#o\n",
+ ipcp->mode, ipcp->mode & 0777);
+ bb_printf ("bytes=%ld\tlpid=%d\tcpid=%d\tnattch=%ld\n",
+ (long) shmds.shm_segsz, shmds.shm_lpid, shmds.shm_cpid,
+ (long) shmds.shm_nattch);
+ bb_printf ("att_time=%-26.24s\n",
+ shmds.shm_atime ? ctime (&shmds.shm_atime) : "Not set");
+ bb_printf ("det_time=%-26.24s\n",
+ shmds.shm_dtime ? ctime (&shmds.shm_dtime) : "Not set");
+ bb_printf ("change_time=%-26.24s\n", ctime (&shmds.shm_ctime));
+ bb_printf ("\n");
+ return;
+}
+
+
+void print_msg (int msqid)
+{
+ struct msqid_ds buf;
+ struct ipc_perm *ipcp = &buf.msg_perm;
+
+ if (msgctl (msqid, IPC_STAT, &buf) == -1) {
+ perror ("msgctl ");
+ return;
+ }
+
+ bb_printf ("\nMessage Queue msqid=%d\n", msqid);
+ bb_printf ("uid=%d\tgid=%d\tcuid=%d\tcgid=%d\tmode=%#o\n",
+ ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid, ipcp->mode);
+ bb_printf ("cbytes=%ld\tqbytes=%ld\tqnum=%ld\tlspid=%d\tlrpid=%d\n",
+ /*
+ * glibc-2.1.3 and earlier has unsigned short;
+ * glibc-2.1.91 has variation between
+ * unsigned short, unsigned long
+ * Austin has msgqnum_t (for msg_qbytes)
+ */
+ (long) buf.msg_cbytes, (long) buf.msg_qbytes,
+ (long) buf.msg_qnum, buf.msg_lspid, buf.msg_lrpid);
+ bb_printf ("send_time=%-26.24s\n",
+ buf.msg_stime ? ctime (&buf.msg_stime) : "Not set");
+ bb_printf ("rcv_time=%-26.24s\n",
+ buf.msg_rtime ? ctime (&buf.msg_rtime) : "Not set");
+ bb_printf ("change_time=%-26.24s\n",
+ buf.msg_ctime ? ctime (&buf.msg_ctime) : "Not set");
+ bb_printf ("\n");
+ return;
+}
+
+void print_sem (int semid)
+{
+ struct semid_ds semds;
+ struct ipc_perm *ipcp = &semds.sem_perm;
+ union semun arg;
+ int i;
+
+ arg.buf = &semds;
+ if (semctl (semid, 0, IPC_STAT, arg) < 0) {
+ perror ("semctl ");
+ return;
+ }
+
+ bb_printf ("\nSemaphore Array semid=%d\n", semid);
+ bb_printf ("uid=%d\t gid=%d\t cuid=%d\t cgid=%d\n",
+ ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid);
+ bb_printf ("mode=%#o, access_perms=%#o\n",
+ ipcp->mode, ipcp->mode & 0777);
+ bb_printf ("nsems = %ld\n", (long) semds.sem_nsems);
+ bb_printf ("otime = %-26.24s\n",
+ semds.sem_otime ? ctime (&semds.sem_otime) : "Not set");
+ bb_printf ("ctime = %-26.24s\n", ctime (&semds.sem_ctime));
+
+ bb_printf ("%-10s %-10s %-10s %-10s %-10s\n",
+ "semnum","value","ncount","zcount","pid");
+
+ arg.val = 0;
+ for (i=0; i< semds.sem_nsems; i++) {
+ int val, ncnt, zcnt, pid;
+ val = semctl (semid, i, GETVAL, arg);
+ ncnt = semctl (semid, i, GETNCNT, arg);
+ zcnt = semctl (semid, i, GETZCNT, arg);
+ pid = semctl (semid, i, GETPID, arg);
+ if (val < 0 || ncnt < 0 || zcnt < 0 || pid < 0) {
+ perror ("semctl ");
+ bb_fflush_stdout_and_exit (1);
+ }
+ bb_printf ("%-10d %-10d %-10d %-10d %-10d\n",
+ i, val, ncnt, zcnt, pid);
+ }
+ bb_printf ("\n");
+ return;
+}
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