blob: 67a25a8ef285af9a3255e1b33420cca4ddb3b73f
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 | |
11 | //usage:#define ipcs_trivial_usage |
12 | //usage: "[[-smq] -i shmid] | [[-asmq] [-tcplu]]" |
13 | //usage:#define ipcs_full_usage "\n\n" |
14 | //usage: " -i Show specific resource" |
15 | //usage: "\nResource specification:" |
16 | //usage: "\n -m Shared memory segments" |
17 | //usage: "\n -q Message queues" |
18 | //usage: "\n -s Semaphore arrays" |
19 | //usage: "\n -a All (default)" |
20 | //usage: "\nOutput format:" |
21 | //usage: "\n -t Time" |
22 | //usage: "\n -c Creator" |
23 | //usage: "\n -p Pid" |
24 | //usage: "\n -l Limits" |
25 | //usage: "\n -u Summary" |
26 | |
27 | /* X/OPEN tells us to use <sys/{types,ipc,sem}.h> for semctl() */ |
28 | /* X/OPEN tells us to use <sys/{types,ipc,msg}.h> for msgctl() */ |
29 | /* X/OPEN tells us to use <sys/{types,ipc,shm}.h> for shmctl() */ |
30 | #include <sys/types.h> |
31 | #include <sys/ipc.h> |
32 | #include <sys/sem.h> |
33 | #include <sys/msg.h> |
34 | #include <sys/shm.h> |
35 | |
36 | #include "libbb.h" |
37 | |
38 | /*-------------------------------------------------------------------*/ |
39 | /* SHM_DEST and SHM_LOCKED are defined in kernel headers, |
40 | but inside #ifdef __KERNEL__ ... #endif */ |
41 | #ifndef SHM_DEST |
42 | /* shm_mode upper byte flags */ |
43 | #define SHM_DEST 01000 /* segment will be destroyed on last detach */ |
44 | #define SHM_LOCKED 02000 /* segment will not be swapped */ |
45 | #endif |
46 | |
47 | /* For older kernels the same holds for the defines below */ |
48 | #ifndef MSG_STAT |
49 | #define MSG_STAT 11 |
50 | #define MSG_INFO 12 |
51 | #endif |
52 | |
53 | #ifndef SHM_STAT |
54 | #define SHM_STAT 13 |
55 | #define SHM_INFO 14 |
56 | struct shm_info { |
57 | int used_ids; |
58 | unsigned long shm_tot; /* total allocated shm */ |
59 | unsigned long shm_rss; /* total resident shm */ |
60 | unsigned long shm_swp; /* total swapped shm */ |
61 | unsigned long swap_attempts; |
62 | unsigned long swap_successes; |
63 | }; |
64 | #endif |
65 | |
66 | #ifndef SEM_STAT |
67 | #define SEM_STAT 18 |
68 | #define SEM_INFO 19 |
69 | #endif |
70 | |
71 | /* Some versions of libc only define IPC_INFO when __USE_GNU is defined. */ |
72 | #ifndef IPC_INFO |
73 | #define IPC_INFO 3 |
74 | #endif |
75 | /*-------------------------------------------------------------------*/ |
76 | |
77 | /* The last arg of semctl is a union semun, but where is it defined? |
78 | X/OPEN tells us to define it ourselves, but until recently |
79 | Linux include files would also define it. */ |
80 | #if defined(__GNU_LIBRARY__) && !defined(_SEM_SEMUN_UNDEFINED) |
81 | /* union semun is defined by including <sys/sem.h> */ |
82 | #else |
83 | /* according to X/OPEN we have to define it ourselves */ |
84 | union semun { |
85 | int val; |
86 | struct semid_ds *buf; |
87 | unsigned short *array; |
88 | struct seminfo *__buf; |
89 | }; |
90 | #endif |
91 | |
92 | /* X/OPEN (Jan 1987) does not define fields key, seq in struct ipc_perm; |
93 | libc 4/5 does not mention struct ipc_term at all, but includes |
94 | <linux/ipc.h>, which defines a struct ipc_perm with such fields. |
95 | glibc-1.09 has no support for sysv ipc. |
96 | glibc 2 uses __key, __seq */ |
97 | #if defined(__GNU_LIBRARY__) && __GNU_LIBRARY__ > 1 |
98 | #define KEY __key |
99 | #else |
100 | #define KEY key |
101 | #endif |
102 | |
103 | #define LIMITS 1 |
104 | #define STATUS 2 |
105 | #define CREATOR 3 |
106 | #define TIME 4 |
107 | #define PID 5 |
108 | |
109 | static char format; |
110 | |
111 | static void print_perms(int id, struct ipc_perm *ipcp) |
112 | { |
113 | struct passwd *pw; |
114 | struct group *gr; |
115 | |
116 | printf("%-10d %-10o", id, ipcp->mode & 0777); |
117 | |
118 | pw = getpwuid(ipcp->cuid); |
119 | if (pw) printf(" %-10s", pw->pw_name); |
120 | else printf(" %-10d", ipcp->cuid); |
121 | gr = getgrgid(ipcp->cgid); |
122 | if (gr) printf(" %-10s", gr->gr_name); |
123 | else printf(" %-10d", ipcp->cgid); |
124 | |
125 | pw = getpwuid(ipcp->uid); |
126 | if (pw) printf(" %-10s", pw->pw_name); |
127 | else printf(" %-10d", ipcp->uid); |
128 | gr = getgrgid(ipcp->gid); |
129 | if (gr) printf(" %-10s\n", gr->gr_name); |
130 | else printf(" %-10d\n", ipcp->gid); |
131 | } |
132 | |
133 | |
134 | static NOINLINE void do_shm(void) |
135 | { |
136 | int maxid, shmid, id; |
137 | struct shmid_ds shmseg; |
138 | struct shm_info shm_info; |
139 | struct shminfo shminfo; |
140 | struct ipc_perm *ipcp = &shmseg.shm_perm; |
141 | struct passwd *pw; |
142 | |
143 | maxid = shmctl(0, SHM_INFO, (struct shmid_ds *) (void *) &shm_info); |
144 | if (maxid < 0) { |
145 | printf("kernel not configured for %s\n", "shared memory"); |
146 | return; |
147 | } |
148 | |
149 | switch (format) { |
150 | case LIMITS: |
151 | printf("------ Shared Memory %s --------\n", "Limits"); |
152 | if ((shmctl(0, IPC_INFO, (struct shmid_ds *) (void *) &shminfo)) < 0) |
153 | return; |
154 | /* glibc 2.1.3 and all earlier libc's have ints as fields |
155 | * of struct shminfo; glibc 2.1.91 has unsigned long; ach */ |
156 | printf("max number of segments = %lu\n" |
157 | "max seg size (kbytes) = %lu\n" |
158 | "max total shared memory (pages) = %lu\n" |
159 | "min seg size (bytes) = %lu\n", |
160 | (unsigned long) shminfo.shmmni, |
161 | (unsigned long) (shminfo.shmmax >> 10), |
162 | (unsigned long) shminfo.shmall, |
163 | (unsigned long) shminfo.shmmin); |
164 | return; |
165 | |
166 | case STATUS: |
167 | printf("------ Shared Memory %s --------\n", "Status"); |
168 | printf("segments allocated %d\n" |
169 | "pages allocated %lu\n" |
170 | "pages resident %lu\n" |
171 | "pages swapped %lu\n" |
172 | "Swap performance: %lu attempts\t%lu successes\n", |
173 | shm_info.used_ids, |
174 | shm_info.shm_tot, |
175 | shm_info.shm_rss, |
176 | shm_info.shm_swp, |
177 | shm_info.swap_attempts, shm_info.swap_successes); |
178 | return; |
179 | |
180 | case CREATOR: |
181 | printf("------ Shared Memory %s --------\n", "Segment Creators/Owners"); |
182 | printf("%-10s %-10s %-10s %-10s %-10s %-10s\n", |
183 | "shmid", "perms", "cuid", "cgid", "uid", "gid"); |
184 | break; |
185 | |
186 | case TIME: |
187 | printf("------ Shared Memory %s --------\n", "Attach/Detach/Change Times"); |
188 | printf("%-10s %-10s %-20s %-20s %-20s\n", |
189 | "shmid", "owner", "attached", "detached", "changed"); |
190 | break; |
191 | |
192 | case PID: |
193 | printf("------ Shared Memory %s --------\n", "Creator/Last-op"); |
194 | printf("%-10s %-10s %-10s %-10s\n", |
195 | "shmid", "owner", "cpid", "lpid"); |
196 | break; |
197 | |
198 | default: |
199 | printf("------ Shared Memory %s --------\n", "Segments"); |
200 | printf("%-10s %-10s %-10s %-10s %-10s %-10s %-12s\n", |
201 | "key", "shmid", "owner", "perms", "bytes", "nattch", |
202 | "status"); |
203 | break; |
204 | } |
205 | |
206 | for (id = 0; id <= maxid; id++) { |
207 | shmid = shmctl(id, SHM_STAT, &shmseg); |
208 | if (shmid < 0) |
209 | continue; |
210 | if (format == CREATOR) { |
211 | print_perms(shmid, ipcp); |
212 | continue; |
213 | } |
214 | pw = getpwuid(ipcp->uid); |
215 | switch (format) { |
216 | case TIME: |
217 | if (pw) |
218 | printf("%-10d %-10.10s", shmid, pw->pw_name); |
219 | else |
220 | printf("%-10d %-10d", shmid, ipcp->uid); |
221 | /* ctime uses static buffer: use separate calls */ |
222 | printf(" %-20.16s", shmseg.shm_atime |
223 | ? ctime(&shmseg.shm_atime) + 4 : "Not set"); |
224 | printf(" %-20.16s", shmseg.shm_dtime |
225 | ? ctime(&shmseg.shm_dtime) + 4 : "Not set"); |
226 | printf(" %-20.16s\n", shmseg.shm_ctime |
227 | ? ctime(&shmseg.shm_ctime) + 4 : "Not set"); |
228 | break; |
229 | case PID: |
230 | if (pw) |
231 | printf("%-10d %-10.10s", shmid, pw->pw_name); |
232 | else |
233 | printf("%-10d %-10d", shmid, ipcp->uid); |
234 | printf(" %-10d %-10d\n", shmseg.shm_cpid, shmseg.shm_lpid); |
235 | break; |
236 | |
237 | default: |
238 | printf("0x%08x ", ipcp->KEY); |
239 | if (pw) |
240 | printf("%-10d %-10.10s", shmid, pw->pw_name); |
241 | else |
242 | printf("%-10d %-10d", shmid, ipcp->uid); |
243 | printf(" %-10o %-10lu %-10ld %-6s %-6s\n", ipcp->mode & 0777, |
244 | /* |
245 | * earlier: int, Austin has size_t |
246 | */ |
247 | (unsigned long) shmseg.shm_segsz, |
248 | /* |
249 | * glibc-2.1.3 and earlier has unsigned short; |
250 | * Austin has shmatt_t |
251 | */ |
252 | (long) shmseg.shm_nattch, |
253 | ipcp->mode & SHM_DEST ? "dest" : " ", |
254 | ipcp->mode & SHM_LOCKED ? "locked" : " "); |
255 | break; |
256 | } |
257 | } |
258 | } |
259 | |
260 | |
261 | static NOINLINE void do_sem(void) |
262 | { |
263 | int maxid, semid, id; |
264 | struct semid_ds semary; |
265 | struct seminfo seminfo; |
266 | struct ipc_perm *ipcp = &semary.sem_perm; |
267 | struct passwd *pw; |
268 | union semun arg; |
269 | |
270 | arg.array = (unsigned short *) (void *) &seminfo; |
271 | maxid = semctl(0, 0, SEM_INFO, arg); |
272 | if (maxid < 0) { |
273 | printf("kernel not configured for %s\n", "semaphores"); |
274 | return; |
275 | } |
276 | |
277 | switch (format) { |
278 | case LIMITS: |
279 | printf("------ Semaphore %s --------\n", "Limits"); |
280 | arg.array = (unsigned short *) (void *) &seminfo; /* damn union */ |
281 | if ((semctl(0, 0, IPC_INFO, arg)) < 0) |
282 | return; |
283 | printf("max number of arrays = %d\n" |
284 | "max semaphores per array = %d\n" |
285 | "max semaphores system wide = %d\n" |
286 | "max ops per semop call = %d\n" |
287 | "semaphore max value = %d\n", |
288 | seminfo.semmni, |
289 | seminfo.semmsl, |
290 | seminfo.semmns, seminfo.semopm, seminfo.semvmx); |
291 | return; |
292 | |
293 | case STATUS: |
294 | printf("------ Semaphore %s --------\n", "Status"); |
295 | printf("used arrays = %d\n" |
296 | "allocated semaphores = %d\n", |
297 | seminfo.semusz, seminfo.semaem); |
298 | return; |
299 | |
300 | case CREATOR: |
301 | printf("------ Semaphore %s --------\n", "Arrays Creators/Owners"); |
302 | printf("%-10s %-10s %-10s %-10s %-10s %-10s\n", |
303 | "semid", "perms", "cuid", "cgid", "uid", "gid"); |
304 | break; |
305 | |
306 | case TIME: |
307 | printf("------ Shared Memory %s --------\n", "Operation/Change Times"); |
308 | printf("%-8s %-10s %-26.24s %-26.24s\n", |
309 | "shmid", "owner", "last-op", "last-changed"); |
310 | break; |
311 | |
312 | case PID: |
313 | break; |
314 | |
315 | default: |
316 | printf("------ Semaphore %s --------\n", "Arrays"); |
317 | printf("%-10s %-10s %-10s %-10s %-10s\n", |
318 | "key", "semid", "owner", "perms", "nsems"); |
319 | break; |
320 | } |
321 | |
322 | for (id = 0; id <= maxid; id++) { |
323 | arg.buf = (struct semid_ds *) &semary; |
324 | semid = semctl(id, 0, SEM_STAT, arg); |
325 | if (semid < 0) |
326 | continue; |
327 | if (format == CREATOR) { |
328 | print_perms(semid, ipcp); |
329 | continue; |
330 | } |
331 | pw = getpwuid(ipcp->uid); |
332 | switch (format) { |
333 | case TIME: |
334 | if (pw) |
335 | printf("%-8d %-10.10s", semid, pw->pw_name); |
336 | else |
337 | printf("%-8d %-10d", semid, ipcp->uid); |
338 | /* ctime uses static buffer: use separate calls */ |
339 | printf(" %-26.24s", semary.sem_otime |
340 | ? ctime(&semary.sem_otime) : "Not set"); |
341 | printf(" %-26.24s\n", semary.sem_ctime |
342 | ? ctime(&semary.sem_ctime) : "Not set"); |
343 | break; |
344 | case PID: |
345 | break; |
346 | |
347 | default: |
348 | printf("0x%08x ", ipcp->KEY); |
349 | if (pw) |
350 | printf("%-10d %-10.9s", semid, pw->pw_name); |
351 | else |
352 | printf("%-10d %-9d", semid, ipcp->uid); |
353 | printf(" %-10o %-10ld\n", ipcp->mode & 0777, |
354 | /* |
355 | * glibc-2.1.3 and earlier has unsigned short; |
356 | * glibc-2.1.91 has variation between |
357 | * unsigned short and unsigned long |
358 | * Austin prescribes unsigned short. |
359 | */ |
360 | (long) semary.sem_nsems); |
361 | break; |
362 | } |
363 | } |
364 | } |
365 | |
366 | |
367 | static NOINLINE void do_msg(void) |
368 | { |
369 | int maxid, msqid, id; |
370 | struct msqid_ds msgque; |
371 | struct msginfo msginfo; |
372 | struct ipc_perm *ipcp = &msgque.msg_perm; |
373 | struct passwd *pw; |
374 | |
375 | maxid = msgctl(0, MSG_INFO, (struct msqid_ds *) (void *) &msginfo); |
376 | if (maxid < 0) { |
377 | printf("kernel not configured for %s\n", "message queues"); |
378 | return; |
379 | } |
380 | |
381 | switch (format) { |
382 | case LIMITS: |
383 | if ((msgctl(0, IPC_INFO, (struct msqid_ds *) (void *) &msginfo)) < 0) |
384 | return; |
385 | printf("------ Message%s --------\n", "s: Limits"); |
386 | printf("max queues system wide = %d\n" |
387 | "max size of message (bytes) = %d\n" |
388 | "default max size of queue (bytes) = %d\n", |
389 | msginfo.msgmni, msginfo.msgmax, msginfo.msgmnb); |
390 | return; |
391 | |
392 | case STATUS: |
393 | printf("------ Message%s --------\n", "s: Status"); |
394 | printf("allocated queues = %d\n" |
395 | "used headers = %d\n" |
396 | "used space = %d bytes\n", |
397 | msginfo.msgpool, msginfo.msgmap, msginfo.msgtql); |
398 | return; |
399 | |
400 | case CREATOR: |
401 | printf("------ Message%s --------\n", " Queues: Creators/Owners"); |
402 | printf("%-10s %-10s %-10s %-10s %-10s %-10s\n", |
403 | "msqid", "perms", "cuid", "cgid", "uid", "gid"); |
404 | break; |
405 | |
406 | case TIME: |
407 | printf("------ Message%s --------\n", " Queues Send/Recv/Change Times"); |
408 | printf("%-8s %-10s %-20s %-20s %-20s\n", |
409 | "msqid", "owner", "send", "recv", "change"); |
410 | break; |
411 | |
412 | case PID: |
413 | printf("------ Message%s --------\n", " Queues PIDs"); |
414 | printf("%-10s %-10s %-10s %-10s\n", |
415 | "msqid", "owner", "lspid", "lrpid"); |
416 | break; |
417 | |
418 | default: |
419 | printf("------ Message%s --------\n", " Queues"); |
420 | printf("%-10s %-10s %-10s %-10s %-12s %-12s\n", |
421 | "key", "msqid", "owner", "perms", "used-bytes", "messages"); |
422 | break; |
423 | } |
424 | |
425 | for (id = 0; id <= maxid; id++) { |
426 | msqid = msgctl(id, MSG_STAT, &msgque); |
427 | if (msqid < 0) |
428 | continue; |
429 | if (format == CREATOR) { |
430 | print_perms(msqid, ipcp); |
431 | continue; |
432 | } |
433 | pw = getpwuid(ipcp->uid); |
434 | switch (format) { |
435 | case TIME: |
436 | if (pw) |
437 | printf("%-8d %-10.10s", msqid, pw->pw_name); |
438 | else |
439 | printf("%-8d %-10d", msqid, ipcp->uid); |
440 | printf(" %-20.16s", msgque.msg_stime |
441 | ? ctime(&msgque.msg_stime) + 4 : "Not set"); |
442 | printf(" %-20.16s", msgque.msg_rtime |
443 | ? ctime(&msgque.msg_rtime) + 4 : "Not set"); |
444 | printf(" %-20.16s\n", msgque.msg_ctime |
445 | ? ctime(&msgque.msg_ctime) + 4 : "Not set"); |
446 | break; |
447 | case PID: |
448 | if (pw) |
449 | printf("%-8d %-10.10s", msqid, pw->pw_name); |
450 | else |
451 | printf("%-8d %-10d", msqid, ipcp->uid); |
452 | printf(" %5d %5d\n", msgque.msg_lspid, msgque.msg_lrpid); |
453 | break; |
454 | |
455 | default: |
456 | printf("0x%08x ", ipcp->KEY); |
457 | if (pw) |
458 | printf("%-10d %-10.10s", msqid, pw->pw_name); |
459 | else |
460 | printf("%-10d %-10d", msqid, ipcp->uid); |
461 | printf(" %-10o %-12ld %-12ld\n", ipcp->mode & 0777, |
462 | /* |
463 | * glibc-2.1.3 and earlier has unsigned short; |
464 | * glibc-2.1.91 has variation between |
465 | * unsigned short, unsigned long |
466 | * Austin has msgqnum_t |
467 | */ |
468 | (long) msgque.msg_cbytes, (long) msgque.msg_qnum); |
469 | break; |
470 | } |
471 | } |
472 | } |
473 | |
474 | |
475 | static void print_shm(int shmid) |
476 | { |
477 | struct shmid_ds shmds; |
478 | struct ipc_perm *ipcp = &shmds.shm_perm; |
479 | |
480 | if (shmctl(shmid, IPC_STAT, &shmds) == -1) { |
481 | bb_perror_msg("shmctl"); |
482 | return; |
483 | } |
484 | |
485 | printf("\nShared memory Segment shmid=%d\n" |
486 | "uid=%d\tgid=%d\tcuid=%d\tcgid=%d\n" |
487 | "mode=%#o\taccess_perms=%#o\n" |
488 | "bytes=%ld\tlpid=%d\tcpid=%d\tnattch=%ld\n", |
489 | shmid, |
490 | ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid, |
491 | ipcp->mode, ipcp->mode & 0777, |
492 | (long) shmds.shm_segsz, shmds.shm_lpid, shmds.shm_cpid, |
493 | (long) shmds.shm_nattch); |
494 | printf("att_time=%-26.24s\n", |
495 | shmds.shm_atime ? ctime(&shmds.shm_atime) : "Not set"); |
496 | printf("det_time=%-26.24s\n", |
497 | shmds.shm_dtime ? ctime(&shmds.shm_dtime) : "Not set"); |
498 | printf("change_time=%-26.24s\n\n", ctime(&shmds.shm_ctime)); |
499 | } |
500 | |
501 | |
502 | static void print_msg(int msqid) |
503 | { |
504 | struct msqid_ds buf; |
505 | struct ipc_perm *ipcp = &buf.msg_perm; |
506 | |
507 | if (msgctl(msqid, IPC_STAT, &buf) == -1) { |
508 | bb_perror_msg("msgctl"); |
509 | return; |
510 | } |
511 | |
512 | printf("\nMessage Queue msqid=%d\n" |
513 | "uid=%d\tgid=%d\tcuid=%d\tcgid=%d\tmode=%#o\n" |
514 | "cbytes=%ld\tqbytes=%ld\tqnum=%ld\tlspid=%d\tlrpid=%d\n", |
515 | msqid, ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid, ipcp->mode, |
516 | /* |
517 | * glibc-2.1.3 and earlier has unsigned short; |
518 | * glibc-2.1.91 has variation between |
519 | * unsigned short, unsigned long |
520 | * Austin has msgqnum_t (for msg_qbytes) |
521 | */ |
522 | (long) buf.msg_cbytes, (long) buf.msg_qbytes, |
523 | (long) buf.msg_qnum, buf.msg_lspid, buf.msg_lrpid); |
524 | |
525 | printf("send_time=%-26.24s\n", |
526 | buf.msg_stime ? ctime(&buf.msg_stime) : "Not set"); |
527 | printf("rcv_time=%-26.24s\n", |
528 | buf.msg_rtime ? ctime(&buf.msg_rtime) : "Not set"); |
529 | printf("change_time=%-26.24s\n\n", |
530 | buf.msg_ctime ? ctime(&buf.msg_ctime) : "Not set"); |
531 | } |
532 | |
533 | static void print_sem(int semid) |
534 | { |
535 | struct semid_ds semds; |
536 | struct ipc_perm *ipcp = &semds.sem_perm; |
537 | union semun arg; |
538 | unsigned int i; |
539 | |
540 | arg.buf = &semds; |
541 | if (semctl(semid, 0, IPC_STAT, arg)) { |
542 | bb_perror_msg("semctl"); |
543 | return; |
544 | } |
545 | |
546 | printf("\nSemaphore Array semid=%d\n" |
547 | "uid=%d\t gid=%d\t cuid=%d\t cgid=%d\n" |
548 | "mode=%#o, access_perms=%#o\n" |
549 | "nsems = %ld\n" |
550 | "otime = %-26.24s\n", |
551 | semid, |
552 | ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid, |
553 | ipcp->mode, ipcp->mode & 0777, |
554 | (long) semds.sem_nsems, |
555 | semds.sem_otime ? ctime(&semds.sem_otime) : "Not set"); |
556 | printf("ctime = %-26.24s\n" |
557 | "%-10s %-10s %-10s %-10s %-10s\n", |
558 | ctime(&semds.sem_ctime), |
559 | "semnum", "value", "ncount", "zcount", "pid"); |
560 | |
561 | arg.val = 0; |
562 | for (i = 0; i < semds.sem_nsems; i++) { |
563 | int val, ncnt, zcnt, pid; |
564 | |
565 | val = semctl(semid, i, GETVAL, arg); |
566 | ncnt = semctl(semid, i, GETNCNT, arg); |
567 | zcnt = semctl(semid, i, GETZCNT, arg); |
568 | pid = semctl(semid, i, GETPID, arg); |
569 | if (val < 0 || ncnt < 0 || zcnt < 0 || pid < 0) { |
570 | bb_perror_msg_and_die("semctl"); |
571 | } |
572 | printf("%-10u %-10d %-10d %-10d %-10d\n", i, val, ncnt, zcnt, pid); |
573 | } |
574 | bb_putchar('\n'); |
575 | } |
576 | |
577 | int ipcs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
578 | int ipcs_main(int argc UNUSED_PARAM, char **argv) |
579 | { |
580 | int id = 0; |
581 | unsigned flags = 0; |
582 | unsigned opt; |
583 | char *opt_i; |
584 | #define flag_print (1<<0) |
585 | #define flag_msg (1<<1) |
586 | #define flag_sem (1<<2) |
587 | #define flag_shm (1<<3) |
588 | |
589 | opt = getopt32(argv, "i:aqsmtcplu", &opt_i); |
590 | if (opt & 0x1) { // -i |
591 | id = xatoi(opt_i); |
592 | flags |= flag_print; |
593 | } |
594 | if (opt & 0x2) flags |= flag_msg | flag_sem | flag_shm; // -a |
595 | if (opt & 0x4) flags |= flag_msg; // -q |
596 | if (opt & 0x8) flags |= flag_sem; // -s |
597 | if (opt & 0x10) flags |= flag_shm; // -m |
598 | if (opt & 0x20) format = TIME; // -t |
599 | if (opt & 0x40) format = CREATOR; // -c |
600 | if (opt & 0x80) format = PID; // -p |
601 | if (opt & 0x100) format = LIMITS; // -l |
602 | if (opt & 0x200) format = STATUS; // -u |
603 | |
604 | if (flags & flag_print) { |
605 | if (flags & flag_shm) { |
606 | print_shm(id); |
607 | fflush_stdout_and_exit(EXIT_SUCCESS); |
608 | } |
609 | if (flags & flag_sem) { |
610 | print_sem(id); |
611 | fflush_stdout_and_exit(EXIT_SUCCESS); |
612 | } |
613 | if (flags & flag_msg) { |
614 | print_msg(id); |
615 | fflush_stdout_and_exit(EXIT_SUCCESS); |
616 | } |
617 | bb_show_usage(); |
618 | } |
619 | |
620 | if (!(flags & (flag_shm | flag_msg | flag_sem))) |
621 | flags |= flag_msg | flag_shm | flag_sem; |
622 | bb_putchar('\n'); |
623 | |
624 | if (flags & flag_shm) { |
625 | do_shm(); |
626 | bb_putchar('\n'); |
627 | } |
628 | if (flags & flag_sem) { |
629 | do_sem(); |
630 | bb_putchar('\n'); |
631 | } |
632 | if (flags & flag_msg) { |
633 | do_msg(); |
634 | bb_putchar('\n'); |
635 | } |
636 | fflush_stdout_and_exit(EXIT_SUCCESS); |
637 | } |
638 |