blob: 88ae9225d708a9bbdd418871872b478d4c705ad5
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * ipcs.c -- provides information on allocated ipc resources. |
4 | * |
5 | * 01 Sept 2004 - Rodney Radford <rradford@mindspring.com> |
6 | * Adapted for busybox from util-linux-2.12a. |
7 | * |
8 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
9 | */ |
10 | //config:config IPCS |
11 | //config: bool "ipcs" |
12 | //config: default y |
13 | //config: select PLATFORM_LINUX |
14 | //config: help |
15 | //config: The ipcs utility is used to provide information on the currently |
16 | //config: allocated System V interprocess (IPC) objects in the system. |
17 | |
18 | //applet:IF_IPCS(APPLET(ipcs, BB_DIR_USR_BIN, BB_SUID_DROP)) |
19 | |
20 | //kbuild:lib-$(CONFIG_IPCS) += ipcs.o |
21 | |
22 | //usage:#define ipcs_trivial_usage |
23 | //usage: "[[-smq] -i shmid] | [[-asmq] [-tcplu]]" |
24 | //usage:#define ipcs_full_usage "\n\n" |
25 | //usage: " -i Show specific resource" |
26 | //usage: "\nResource specification:" |
27 | //usage: "\n -m Shared memory segments" |
28 | //usage: "\n -q Message queues" |
29 | //usage: "\n -s Semaphore arrays" |
30 | //usage: "\n -a All (default)" |
31 | //usage: "\nOutput format:" |
32 | //usage: "\n -t Time" |
33 | //usage: "\n -c Creator" |
34 | //usage: "\n -p Pid" |
35 | //usage: "\n -l Limits" |
36 | //usage: "\n -u Summary" |
37 | |
38 | /* X/OPEN tells us to use <sys/{types,ipc,sem}.h> for semctl() */ |
39 | /* X/OPEN tells us to use <sys/{types,ipc,msg}.h> for msgctl() */ |
40 | /* X/OPEN tells us to use <sys/{types,ipc,shm}.h> for shmctl() */ |
41 | #include <sys/types.h> |
42 | #include <sys/ipc.h> |
43 | #include <sys/sem.h> |
44 | #include <sys/msg.h> |
45 | #include <sys/shm.h> |
46 | |
47 | #include "libbb.h" |
48 | |
49 | /*-------------------------------------------------------------------*/ |
50 | /* SHM_DEST and SHM_LOCKED are defined in kernel headers, |
51 | but inside #ifdef __KERNEL__ ... #endif */ |
52 | #ifndef SHM_DEST |
53 | /* shm_mode upper byte flags */ |
54 | #define SHM_DEST 01000 /* segment will be destroyed on last detach */ |
55 | #define SHM_LOCKED 02000 /* segment will not be swapped */ |
56 | #endif |
57 | |
58 | /* For older kernels the same holds for the defines below */ |
59 | #ifndef MSG_STAT |
60 | #define MSG_STAT 11 |
61 | #define MSG_INFO 12 |
62 | #endif |
63 | |
64 | #ifndef SHM_STAT |
65 | #define SHM_STAT 13 |
66 | #define SHM_INFO 14 |
67 | struct shm_info { |
68 | int used_ids; |
69 | unsigned long shm_tot; /* total allocated shm */ |
70 | unsigned long shm_rss; /* total resident shm */ |
71 | unsigned long shm_swp; /* total swapped shm */ |
72 | unsigned long swap_attempts; |
73 | unsigned long swap_successes; |
74 | }; |
75 | #endif |
76 | |
77 | #ifndef SEM_STAT |
78 | #define SEM_STAT 18 |
79 | #define SEM_INFO 19 |
80 | #endif |
81 | |
82 | /* Some versions of libc only define IPC_INFO when __USE_GNU is defined. */ |
83 | #ifndef IPC_INFO |
84 | #define IPC_INFO 3 |
85 | #endif |
86 | /*-------------------------------------------------------------------*/ |
87 | |
88 | /* The last arg of semctl is a union semun, but where is it defined? |
89 | X/OPEN tells us to define it ourselves, but until recently |
90 | Linux include files would also define it. */ |
91 | #if defined(__GNU_LIBRARY__) && !defined(_SEM_SEMUN_UNDEFINED) |
92 | /* union semun is defined by including <sys/sem.h> */ |
93 | #else |
94 | /* according to X/OPEN we have to define it ourselves */ |
95 | union semun { |
96 | int val; |
97 | struct semid_ds *buf; |
98 | unsigned short *array; |
99 | struct seminfo *__buf; |
100 | }; |
101 | #endif |
102 | |
103 | /* X/OPEN (Jan 1987) does not define fields key, seq in struct ipc_perm; |
104 | libc 4/5 does not mention struct ipc_term at all, but includes |
105 | <linux/ipc.h>, which defines a struct ipc_perm with such fields. |
106 | glibc-1.09 has no support for sysv ipc. |
107 | glibc 2 uses __key, __seq */ |
108 | #if defined(__GNU_LIBRARY__) && __GNU_LIBRARY__ > 1 |
109 | #define KEY __key |
110 | #else |
111 | #define KEY key |
112 | #endif |
113 | |
114 | #define LIMITS 1 |
115 | #define STATUS 2 |
116 | #define CREATOR 3 |
117 | #define TIME 4 |
118 | #define PID 5 |
119 | |
120 | static char format; |
121 | |
122 | static void print_perms(int id, struct ipc_perm *ipcp) |
123 | { |
124 | struct passwd *pw; |
125 | struct group *gr; |
126 | |
127 | printf("%-10d %-10o", id, ipcp->mode & 0777); |
128 | |
129 | pw = getpwuid(ipcp->cuid); |
130 | if (pw) printf(" %-10s", pw->pw_name); |
131 | else printf(" %-10d", ipcp->cuid); |
132 | gr = getgrgid(ipcp->cgid); |
133 | if (gr) printf(" %-10s", gr->gr_name); |
134 | else printf(" %-10d", ipcp->cgid); |
135 | |
136 | pw = getpwuid(ipcp->uid); |
137 | if (pw) printf(" %-10s", pw->pw_name); |
138 | else printf(" %-10d", ipcp->uid); |
139 | gr = getgrgid(ipcp->gid); |
140 | if (gr) printf(" %-10s\n", gr->gr_name); |
141 | else printf(" %-10d\n", ipcp->gid); |
142 | } |
143 | |
144 | |
145 | static NOINLINE void do_shm(void) |
146 | { |
147 | int maxid, shmid, id; |
148 | struct shmid_ds shmseg; |
149 | struct shm_info shm_info; |
150 | struct shminfo shminfo; |
151 | struct ipc_perm *ipcp = &shmseg.shm_perm; |
152 | struct passwd *pw; |
153 | |
154 | maxid = shmctl(0, SHM_INFO, (struct shmid_ds *) (void *) &shm_info); |
155 | if (maxid < 0) { |
156 | printf("kernel not configured for %s\n", "shared memory"); |
157 | return; |
158 | } |
159 | |
160 | switch (format) { |
161 | case LIMITS: |
162 | printf("------ Shared Memory %s --------\n", "Limits"); |
163 | if ((shmctl(0, IPC_INFO, (struct shmid_ds *) (void *) &shminfo)) < 0) |
164 | return; |
165 | /* glibc 2.1.3 and all earlier libc's have ints as fields |
166 | * of struct shminfo; glibc 2.1.91 has unsigned long; ach */ |
167 | printf("max number of segments = %lu\n" |
168 | "max seg size (kbytes) = %lu\n" |
169 | "max total shared memory (pages) = %lu\n" |
170 | "min seg size (bytes) = %lu\n", |
171 | (unsigned long) shminfo.shmmni, |
172 | (unsigned long) (shminfo.shmmax >> 10), |
173 | (unsigned long) shminfo.shmall, |
174 | (unsigned long) shminfo.shmmin); |
175 | return; |
176 | |
177 | case STATUS: |
178 | printf("------ Shared Memory %s --------\n", "Status"); |
179 | printf("segments allocated %d\n" |
180 | "pages allocated %lu\n" |
181 | "pages resident %lu\n" |
182 | "pages swapped %lu\n" |
183 | "Swap performance: %lu attempts\t%lu successes\n", |
184 | shm_info.used_ids, |
185 | shm_info.shm_tot, |
186 | shm_info.shm_rss, |
187 | shm_info.shm_swp, |
188 | shm_info.swap_attempts, shm_info.swap_successes); |
189 | return; |
190 | |
191 | case CREATOR: |
192 | printf("------ Shared Memory %s --------\n", "Segment Creators/Owners"); |
193 | printf("%-10s %-10s %-10s %-10s %-10s %-10s\n", |
194 | "shmid", "perms", "cuid", "cgid", "uid", "gid"); |
195 | break; |
196 | |
197 | case TIME: |
198 | printf("------ Shared Memory %s --------\n", "Attach/Detach/Change Times"); |
199 | printf("%-10s %-10s %-20s %-20s %-20s\n", |
200 | "shmid", "owner", "attached", "detached", "changed"); |
201 | break; |
202 | |
203 | case PID: |
204 | printf("------ Shared Memory %s --------\n", "Creator/Last-op"); |
205 | printf("%-10s %-10s %-10s %-10s\n", |
206 | "shmid", "owner", "cpid", "lpid"); |
207 | break; |
208 | |
209 | default: |
210 | printf("------ Shared Memory %s --------\n", "Segments"); |
211 | printf("%-10s %-10s %-10s %-10s %-10s %-10s %-12s\n", |
212 | "key", "shmid", "owner", "perms", "bytes", "nattch", |
213 | "status"); |
214 | break; |
215 | } |
216 | |
217 | for (id = 0; id <= maxid; id++) { |
218 | shmid = shmctl(id, SHM_STAT, &shmseg); |
219 | if (shmid < 0) |
220 | continue; |
221 | if (format == CREATOR) { |
222 | print_perms(shmid, ipcp); |
223 | continue; |
224 | } |
225 | pw = getpwuid(ipcp->uid); |
226 | switch (format) { |
227 | case TIME: |
228 | if (pw) |
229 | printf("%-10d %-10.10s", shmid, pw->pw_name); |
230 | else |
231 | printf("%-10d %-10d", shmid, ipcp->uid); |
232 | /* ctime uses static buffer: use separate calls */ |
233 | printf(" %-20.16s", shmseg.shm_atime |
234 | ? ctime(&shmseg.shm_atime) + 4 : "Not set"); |
235 | printf(" %-20.16s", shmseg.shm_dtime |
236 | ? ctime(&shmseg.shm_dtime) + 4 : "Not set"); |
237 | printf(" %-20.16s\n", shmseg.shm_ctime |
238 | ? ctime(&shmseg.shm_ctime) + 4 : "Not set"); |
239 | break; |
240 | case PID: |
241 | if (pw) |
242 | printf("%-10d %-10.10s", shmid, pw->pw_name); |
243 | else |
244 | printf("%-10d %-10d", shmid, ipcp->uid); |
245 | printf(" %-10d %-10d\n", shmseg.shm_cpid, shmseg.shm_lpid); |
246 | break; |
247 | |
248 | default: |
249 | printf("0x%08x ", ipcp->KEY); |
250 | if (pw) |
251 | printf("%-10d %-10.10s", shmid, pw->pw_name); |
252 | else |
253 | printf("%-10d %-10d", shmid, ipcp->uid); |
254 | printf(" %-10o %-10lu %-10ld %-6s %-6s\n", ipcp->mode & 0777, |
255 | /* |
256 | * earlier: int, Austin has size_t |
257 | */ |
258 | (unsigned long) shmseg.shm_segsz, |
259 | /* |
260 | * glibc-2.1.3 and earlier has unsigned short; |
261 | * Austin has shmatt_t |
262 | */ |
263 | (long) shmseg.shm_nattch, |
264 | ipcp->mode & SHM_DEST ? "dest" : " ", |
265 | ipcp->mode & SHM_LOCKED ? "locked" : " "); |
266 | break; |
267 | } |
268 | } |
269 | } |
270 | |
271 | |
272 | static NOINLINE void do_sem(void) |
273 | { |
274 | int maxid, semid, id; |
275 | struct semid_ds semary; |
276 | struct seminfo seminfo; |
277 | struct ipc_perm *ipcp = &semary.sem_perm; |
278 | struct passwd *pw; |
279 | union semun arg; |
280 | |
281 | arg.array = (unsigned short *) (void *) &seminfo; |
282 | maxid = semctl(0, 0, SEM_INFO, arg); |
283 | if (maxid < 0) { |
284 | printf("kernel not configured for %s\n", "semaphores"); |
285 | return; |
286 | } |
287 | |
288 | switch (format) { |
289 | case LIMITS: |
290 | printf("------ Semaphore %s --------\n", "Limits"); |
291 | arg.array = (unsigned short *) (void *) &seminfo; /* damn union */ |
292 | if ((semctl(0, 0, IPC_INFO, arg)) < 0) |
293 | return; |
294 | printf("max number of arrays = %d\n" |
295 | "max semaphores per array = %d\n" |
296 | "max semaphores system wide = %d\n" |
297 | "max ops per semop call = %d\n" |
298 | "semaphore max value = %d\n", |
299 | seminfo.semmni, |
300 | seminfo.semmsl, |
301 | seminfo.semmns, seminfo.semopm, seminfo.semvmx); |
302 | return; |
303 | |
304 | case STATUS: |
305 | printf("------ Semaphore %s --------\n", "Status"); |
306 | printf("used arrays = %d\n" |
307 | "allocated semaphores = %d\n", |
308 | seminfo.semusz, seminfo.semaem); |
309 | return; |
310 | |
311 | case CREATOR: |
312 | printf("------ Semaphore %s --------\n", "Arrays Creators/Owners"); |
313 | printf("%-10s %-10s %-10s %-10s %-10s %-10s\n", |
314 | "semid", "perms", "cuid", "cgid", "uid", "gid"); |
315 | break; |
316 | |
317 | case TIME: |
318 | printf("------ Shared Memory %s --------\n", "Operation/Change Times"); |
319 | printf("%-8s %-10s %-26.24s %-26.24s\n", |
320 | "shmid", "owner", "last-op", "last-changed"); |
321 | break; |
322 | |
323 | case PID: |
324 | break; |
325 | |
326 | default: |
327 | printf("------ Semaphore %s --------\n", "Arrays"); |
328 | printf("%-10s %-10s %-10s %-10s %-10s\n", |
329 | "key", "semid", "owner", "perms", "nsems"); |
330 | break; |
331 | } |
332 | |
333 | for (id = 0; id <= maxid; id++) { |
334 | arg.buf = (struct semid_ds *) &semary; |
335 | semid = semctl(id, 0, SEM_STAT, arg); |
336 | if (semid < 0) |
337 | continue; |
338 | if (format == CREATOR) { |
339 | print_perms(semid, ipcp); |
340 | continue; |
341 | } |
342 | pw = getpwuid(ipcp->uid); |
343 | switch (format) { |
344 | case TIME: |
345 | if (pw) |
346 | printf("%-8d %-10.10s", semid, pw->pw_name); |
347 | else |
348 | printf("%-8d %-10d", semid, ipcp->uid); |
349 | /* ctime uses static buffer: use separate calls */ |
350 | printf(" %-26.24s", semary.sem_otime |
351 | ? ctime(&semary.sem_otime) : "Not set"); |
352 | printf(" %-26.24s\n", semary.sem_ctime |
353 | ? ctime(&semary.sem_ctime) : "Not set"); |
354 | break; |
355 | case PID: |
356 | break; |
357 | |
358 | default: |
359 | printf("0x%08x ", ipcp->KEY); |
360 | if (pw) |
361 | printf("%-10d %-10.9s", semid, pw->pw_name); |
362 | else |
363 | printf("%-10d %-9d", semid, ipcp->uid); |
364 | printf(" %-10o %-10ld\n", ipcp->mode & 0777, |
365 | /* |
366 | * glibc-2.1.3 and earlier has unsigned short; |
367 | * glibc-2.1.91 has variation between |
368 | * unsigned short and unsigned long |
369 | * Austin prescribes unsigned short. |
370 | */ |
371 | (long) semary.sem_nsems); |
372 | break; |
373 | } |
374 | } |
375 | } |
376 | |
377 | |
378 | static NOINLINE void do_msg(void) |
379 | { |
380 | int maxid, msqid, id; |
381 | struct msqid_ds msgque; |
382 | struct msginfo msginfo; |
383 | struct ipc_perm *ipcp = &msgque.msg_perm; |
384 | struct passwd *pw; |
385 | |
386 | maxid = msgctl(0, MSG_INFO, (struct msqid_ds *) (void *) &msginfo); |
387 | if (maxid < 0) { |
388 | printf("kernel not configured for %s\n", "message queues"); |
389 | return; |
390 | } |
391 | |
392 | switch (format) { |
393 | case LIMITS: |
394 | if ((msgctl(0, IPC_INFO, (struct msqid_ds *) (void *) &msginfo)) < 0) |
395 | return; |
396 | printf("------ Message%s --------\n", "s: Limits"); |
397 | printf("max queues system wide = %d\n" |
398 | "max size of message (bytes) = %d\n" |
399 | "default max size of queue (bytes) = %d\n", |
400 | msginfo.msgmni, msginfo.msgmax, msginfo.msgmnb); |
401 | return; |
402 | |
403 | case STATUS: |
404 | printf("------ Message%s --------\n", "s: Status"); |
405 | printf("allocated queues = %d\n" |
406 | "used headers = %d\n" |
407 | "used space = %d bytes\n", |
408 | msginfo.msgpool, msginfo.msgmap, msginfo.msgtql); |
409 | return; |
410 | |
411 | case CREATOR: |
412 | printf("------ Message%s --------\n", " Queues: Creators/Owners"); |
413 | printf("%-10s %-10s %-10s %-10s %-10s %-10s\n", |
414 | "msqid", "perms", "cuid", "cgid", "uid", "gid"); |
415 | break; |
416 | |
417 | case TIME: |
418 | printf("------ Message%s --------\n", " Queues Send/Recv/Change Times"); |
419 | printf("%-8s %-10s %-20s %-20s %-20s\n", |
420 | "msqid", "owner", "send", "recv", "change"); |
421 | break; |
422 | |
423 | case PID: |
424 | printf("------ Message%s --------\n", " Queues PIDs"); |
425 | printf("%-10s %-10s %-10s %-10s\n", |
426 | "msqid", "owner", "lspid", "lrpid"); |
427 | break; |
428 | |
429 | default: |
430 | printf("------ Message%s --------\n", " Queues"); |
431 | printf("%-10s %-10s %-10s %-10s %-12s %-12s\n", |
432 | "key", "msqid", "owner", "perms", "used-bytes", "messages"); |
433 | break; |
434 | } |
435 | |
436 | for (id = 0; id <= maxid; id++) { |
437 | msqid = msgctl(id, MSG_STAT, &msgque); |
438 | if (msqid < 0) |
439 | continue; |
440 | if (format == CREATOR) { |
441 | print_perms(msqid, ipcp); |
442 | continue; |
443 | } |
444 | pw = getpwuid(ipcp->uid); |
445 | switch (format) { |
446 | case TIME: |
447 | if (pw) |
448 | printf("%-8d %-10.10s", msqid, pw->pw_name); |
449 | else |
450 | printf("%-8d %-10d", msqid, ipcp->uid); |
451 | printf(" %-20.16s", msgque.msg_stime |
452 | ? ctime(&msgque.msg_stime) + 4 : "Not set"); |
453 | printf(" %-20.16s", msgque.msg_rtime |
454 | ? ctime(&msgque.msg_rtime) + 4 : "Not set"); |
455 | printf(" %-20.16s\n", msgque.msg_ctime |
456 | ? ctime(&msgque.msg_ctime) + 4 : "Not set"); |
457 | break; |
458 | case PID: |
459 | if (pw) |
460 | printf("%-8d %-10.10s", msqid, pw->pw_name); |
461 | else |
462 | printf("%-8d %-10d", msqid, ipcp->uid); |
463 | printf(" %5d %5d\n", msgque.msg_lspid, msgque.msg_lrpid); |
464 | break; |
465 | |
466 | default: |
467 | printf("0x%08x ", ipcp->KEY); |
468 | if (pw) |
469 | printf("%-10d %-10.10s", msqid, pw->pw_name); |
470 | else |
471 | printf("%-10d %-10d", msqid, ipcp->uid); |
472 | printf(" %-10o %-12ld %-12ld\n", ipcp->mode & 0777, |
473 | /* |
474 | * glibc-2.1.3 and earlier has unsigned short; |
475 | * glibc-2.1.91 has variation between |
476 | * unsigned short, unsigned long |
477 | * Austin has msgqnum_t |
478 | */ |
479 | (long) msgque.msg_cbytes, (long) msgque.msg_qnum); |
480 | break; |
481 | } |
482 | } |
483 | } |
484 | |
485 | |
486 | static void print_shm(int shmid) |
487 | { |
488 | struct shmid_ds shmds; |
489 | struct ipc_perm *ipcp = &shmds.shm_perm; |
490 | |
491 | if (shmctl(shmid, IPC_STAT, &shmds) == -1) { |
492 | bb_perror_msg("shmctl"); |
493 | return; |
494 | } |
495 | |
496 | printf("\nShared memory Segment shmid=%d\n" |
497 | "uid=%d\tgid=%d\tcuid=%d\tcgid=%d\n" |
498 | "mode=%#o\taccess_perms=%#o\n" |
499 | "bytes=%ld\tlpid=%d\tcpid=%d\tnattch=%ld\n", |
500 | shmid, |
501 | ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid, |
502 | ipcp->mode, ipcp->mode & 0777, |
503 | (long) shmds.shm_segsz, shmds.shm_lpid, shmds.shm_cpid, |
504 | (long) shmds.shm_nattch); |
505 | printf("att_time=%-26.24s\n", |
506 | shmds.shm_atime ? ctime(&shmds.shm_atime) : "Not set"); |
507 | printf("det_time=%-26.24s\n", |
508 | shmds.shm_dtime ? ctime(&shmds.shm_dtime) : "Not set"); |
509 | printf("change_time=%-26.24s\n\n", ctime(&shmds.shm_ctime)); |
510 | } |
511 | |
512 | |
513 | static void print_msg(int msqid) |
514 | { |
515 | struct msqid_ds buf; |
516 | struct ipc_perm *ipcp = &buf.msg_perm; |
517 | |
518 | if (msgctl(msqid, IPC_STAT, &buf) == -1) { |
519 | bb_perror_msg("msgctl"); |
520 | return; |
521 | } |
522 | |
523 | printf("\nMessage Queue msqid=%d\n" |
524 | "uid=%d\tgid=%d\tcuid=%d\tcgid=%d\tmode=%#o\n" |
525 | "cbytes=%ld\tqbytes=%ld\tqnum=%ld\tlspid=%d\tlrpid=%d\n", |
526 | msqid, ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid, ipcp->mode, |
527 | /* |
528 | * glibc-2.1.3 and earlier has unsigned short; |
529 | * glibc-2.1.91 has variation between |
530 | * unsigned short, unsigned long |
531 | * Austin has msgqnum_t (for msg_qbytes) |
532 | */ |
533 | (long) buf.msg_cbytes, (long) buf.msg_qbytes, |
534 | (long) buf.msg_qnum, buf.msg_lspid, buf.msg_lrpid); |
535 | |
536 | printf("send_time=%-26.24s\n", |
537 | buf.msg_stime ? ctime(&buf.msg_stime) : "Not set"); |
538 | printf("rcv_time=%-26.24s\n", |
539 | buf.msg_rtime ? ctime(&buf.msg_rtime) : "Not set"); |
540 | printf("change_time=%-26.24s\n\n", |
541 | buf.msg_ctime ? ctime(&buf.msg_ctime) : "Not set"); |
542 | } |
543 | |
544 | static void print_sem(int semid) |
545 | { |
546 | struct semid_ds semds; |
547 | struct ipc_perm *ipcp = &semds.sem_perm; |
548 | union semun arg; |
549 | unsigned int i; |
550 | |
551 | arg.buf = &semds; |
552 | if (semctl(semid, 0, IPC_STAT, arg)) { |
553 | bb_perror_msg("semctl"); |
554 | return; |
555 | } |
556 | |
557 | printf("\nSemaphore Array semid=%d\n" |
558 | "uid=%d\t gid=%d\t cuid=%d\t cgid=%d\n" |
559 | "mode=%#o, access_perms=%#o\n" |
560 | "nsems = %ld\n" |
561 | "otime = %-26.24s\n", |
562 | semid, |
563 | ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid, |
564 | ipcp->mode, ipcp->mode & 0777, |
565 | (long) semds.sem_nsems, |
566 | semds.sem_otime ? ctime(&semds.sem_otime) : "Not set"); |
567 | printf("ctime = %-26.24s\n" |
568 | "%-10s %-10s %-10s %-10s %-10s\n", |
569 | ctime(&semds.sem_ctime), |
570 | "semnum", "value", "ncount", "zcount", "pid"); |
571 | |
572 | arg.val = 0; |
573 | for (i = 0; i < semds.sem_nsems; i++) { |
574 | int val, ncnt, zcnt, pid; |
575 | |
576 | val = semctl(semid, i, GETVAL, arg); |
577 | ncnt = semctl(semid, i, GETNCNT, arg); |
578 | zcnt = semctl(semid, i, GETZCNT, arg); |
579 | pid = semctl(semid, i, GETPID, arg); |
580 | if (val < 0 || ncnt < 0 || zcnt < 0 || pid < 0) { |
581 | bb_perror_msg_and_die("semctl"); |
582 | } |
583 | printf("%-10u %-10d %-10d %-10d %-10d\n", i, val, ncnt, zcnt, pid); |
584 | } |
585 | bb_putchar('\n'); |
586 | } |
587 | |
588 | int ipcs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
589 | int ipcs_main(int argc UNUSED_PARAM, char **argv) |
590 | { |
591 | int id = 0; |
592 | unsigned flags = 0; |
593 | unsigned opt; |
594 | char *opt_i; |
595 | #define flag_print (1<<0) |
596 | #define flag_msg (1<<1) |
597 | #define flag_sem (1<<2) |
598 | #define flag_shm (1<<3) |
599 | |
600 | opt = getopt32(argv, "i:aqsmtcplu", &opt_i); |
601 | if (opt & 0x1) { // -i |
602 | id = xatoi(opt_i); |
603 | flags |= flag_print; |
604 | } |
605 | if (opt & 0x2) flags |= flag_msg | flag_sem | flag_shm; // -a |
606 | if (opt & 0x4) flags |= flag_msg; // -q |
607 | if (opt & 0x8) flags |= flag_sem; // -s |
608 | if (opt & 0x10) flags |= flag_shm; // -m |
609 | if (opt & 0x20) format = TIME; // -t |
610 | if (opt & 0x40) format = CREATOR; // -c |
611 | if (opt & 0x80) format = PID; // -p |
612 | if (opt & 0x100) format = LIMITS; // -l |
613 | if (opt & 0x200) format = STATUS; // -u |
614 | |
615 | if (flags & flag_print) { |
616 | if (flags & flag_shm) { |
617 | print_shm(id); |
618 | fflush_stdout_and_exit(EXIT_SUCCESS); |
619 | } |
620 | if (flags & flag_sem) { |
621 | print_sem(id); |
622 | fflush_stdout_and_exit(EXIT_SUCCESS); |
623 | } |
624 | if (flags & flag_msg) { |
625 | print_msg(id); |
626 | fflush_stdout_and_exit(EXIT_SUCCESS); |
627 | } |
628 | bb_show_usage(); |
629 | } |
630 | |
631 | if (!(flags & (flag_shm | flag_msg | flag_sem))) |
632 | flags |= flag_msg | flag_shm | flag_sem; |
633 | bb_putchar('\n'); |
634 | |
635 | if (flags & flag_shm) { |
636 | do_shm(); |
637 | bb_putchar('\n'); |
638 | } |
639 | if (flags & flag_sem) { |
640 | do_sem(); |
641 | bb_putchar('\n'); |
642 | } |
643 | if (flags & flag_msg) { |
644 | do_msg(); |
645 | bb_putchar('\n'); |
646 | } |
647 | fflush_stdout_and_exit(EXIT_SUCCESS); |
648 | } |
649 |