Commit | Line | Data |
---|---|---|
e8ca3e6a FF |
1 | diff -u -r ../util-linux-2.28/sys-utils/ipcutils.c ./sys-utils/ipcutils.c |
2 | --- ../util-linux-2.28/sys-utils/ipcutils.c 2016-04-04 04:29:50.698566374 -0400 | |
3 | +++ ./sys-utils/ipcutils.c 2016-06-23 06:20:15.952794444 -0400 | |
4 | @@ -15,516 +15,63 @@ | |
5 | # define SHMMIN 1 /* min shared segment size in bytes */ | |
6 | #endif | |
7 | ||
8 | - | |
9 | int ipc_msg_get_limits(struct ipc_limits *lim) | |
10 | { | |
11 | - if (path_exist(_PATH_PROC_IPC_MSGMNI) && | |
12 | - path_exist(_PATH_PROC_IPC_MSGMNB) && | |
13 | - path_exist(_PATH_PROC_IPC_MSGMAX)) { | |
14 | - | |
15 | - lim->msgmni = path_read_s32(_PATH_PROC_IPC_MSGMNI); | |
16 | - lim->msgmnb = path_read_s32(_PATH_PROC_IPC_MSGMNB); | |
17 | - lim->msgmax = path_read_s32(_PATH_PROC_IPC_MSGMAX); | |
18 | - } else { | |
19 | - struct msginfo msginfo; | |
20 | - | |
21 | - if (msgctl(0, IPC_INFO, (struct msqid_ds *) &msginfo) < 0) | |
22 | - return 1; | |
23 | - lim->msgmni = msginfo.msgmni; | |
24 | - lim->msgmnb = msginfo.msgmnb; | |
25 | - lim->msgmax = msginfo.msgmax; | |
26 | - } | |
27 | - | |
28 | - return 0; | |
29 | + return -1; | |
30 | } | |
31 | ||
32 | int ipc_sem_get_limits(struct ipc_limits *lim) | |
33 | { | |
34 | - FILE *f; | |
35 | - int rc = 0; | |
36 | - | |
37 | - lim->semvmx = SEMVMX; | |
38 | - | |
39 | - f = path_fopen("r", 0, _PATH_PROC_IPC_SEM); | |
40 | - if (f) { | |
41 | - rc = fscanf(f, "%d\t%d\t%d\t%d", | |
42 | - &lim->semmsl, &lim->semmns, &lim->semopm, &lim->semmni); | |
43 | - fclose(f); | |
44 | - | |
45 | - } | |
46 | - | |
47 | - if (rc != 4) { | |
48 | - struct seminfo seminfo = { .semmni = 0 }; | |
49 | - union semun arg = { .array = (ushort *) &seminfo }; | |
50 | - | |
51 | - if (semctl(0, 0, IPC_INFO, arg) < 0) | |
52 | - return 1; | |
53 | - lim->semmni = seminfo.semmni; | |
54 | - lim->semmsl = seminfo.semmsl; | |
55 | - lim->semmns = seminfo.semmns; | |
56 | - lim->semopm = seminfo.semopm; | |
57 | - } | |
58 | - | |
59 | - return 0; | |
60 | + return -1; | |
61 | } | |
62 | ||
63 | int ipc_shm_get_limits(struct ipc_limits *lim) | |
64 | { | |
65 | - lim->shmmin = SHMMIN; | |
66 | - | |
67 | - if (path_exist(_PATH_PROC_IPC_SHMALL) && | |
68 | - path_exist(_PATH_PROC_IPC_SHMMAX) && | |
69 | - path_exist(_PATH_PROC_IPC_SHMMNI)) { | |
70 | - | |
71 | - lim->shmall = path_read_u64(_PATH_PROC_IPC_SHMALL); | |
72 | - lim->shmmax = path_read_u64(_PATH_PROC_IPC_SHMMAX); | |
73 | - lim->shmmni = path_read_u64(_PATH_PROC_IPC_SHMMNI); | |
74 | - | |
75 | - } else { | |
76 | - struct shminfo *shminfo; | |
77 | - struct shmid_ds shmbuf; | |
78 | - | |
79 | - if (shmctl(0, IPC_INFO, &shmbuf) < 0) | |
80 | - return 1; | |
81 | - shminfo = (struct shminfo *) &shmbuf; | |
82 | - lim->shmmni = shminfo->shmmni; | |
83 | - lim->shmall = shminfo->shmall; | |
84 | - lim->shmmax = shminfo->shmmax; | |
85 | - } | |
86 | - | |
87 | - return 0; | |
88 | + return -1; | |
89 | } | |
90 | ||
91 | int ipc_shm_get_info(int id, struct shm_data **shmds) | |
92 | { | |
93 | - FILE *f; | |
94 | - int i = 0, maxid; | |
95 | - char buf[BUFSIZ]; | |
96 | - struct shm_data *p; | |
97 | - struct shmid_ds dummy; | |
98 | - | |
99 | - p = *shmds = xcalloc(1, sizeof(struct shm_data)); | |
100 | - p->next = NULL; | |
101 | - | |
102 | - f = path_fopen("r", 0, _PATH_PROC_SYSV_SHM); | |
103 | - if (!f) | |
104 | - goto shm_fallback; | |
105 | - | |
106 | - while (fgetc(f) != '\n'); /* skip header */ | |
107 | - | |
108 | - while (fgets(buf, sizeof(buf), f) != NULL) { | |
109 | - /* scan for the first 14-16 columns (e.g. Linux 2.6.32 has 14) */ | |
110 | - p->shm_rss = 0xdead; | |
111 | - p->shm_swp = 0xdead; | |
112 | - if (sscanf(buf, | |
113 | - "%d %d %o %"SCNu64 " %u %u " | |
114 | - "%"SCNu64 " %u %u %u %u %"SCNi64 " %"SCNi64 " %"SCNi64 | |
115 | - " %"SCNu64 " %"SCNu64 "\n", | |
116 | - &p->shm_perm.key, | |
117 | - &p->shm_perm.id, | |
118 | - &p->shm_perm.mode, | |
119 | - &p->shm_segsz, | |
120 | - &p->shm_cprid, | |
121 | - &p->shm_lprid, | |
122 | - &p->shm_nattch, | |
123 | - &p->shm_perm.uid, | |
124 | - &p->shm_perm.gid, | |
125 | - &p->shm_perm.cuid, | |
126 | - &p->shm_perm.cgid, | |
127 | - &p->shm_atim, | |
128 | - &p->shm_dtim, | |
129 | - &p->shm_ctim, | |
130 | - &p->shm_rss, | |
131 | - &p->shm_swp) < 14) | |
132 | - continue; /* ivalid line, skipped */ | |
133 | - | |
134 | - if (id > -1) { | |
135 | - /* ID specified */ | |
136 | - if (id == p->shm_perm.id) { | |
137 | - i = 1; | |
138 | - break; | |
139 | - } else | |
140 | - continue; | |
141 | - } | |
142 | - | |
143 | - p->next = xcalloc(1, sizeof(struct shm_data)); | |
144 | - p = p->next; | |
145 | - p->next = NULL; | |
146 | - i++; | |
147 | - } | |
148 | - | |
149 | - if (i == 0) | |
150 | - free(*shmds); | |
151 | - fclose(f); | |
152 | - return i; | |
153 | - | |
154 | - /* Fallback; /proc or /sys file(s) missing. */ | |
155 | -shm_fallback: | |
156 | - maxid = shmctl(0, SHM_INFO, &dummy); | |
157 | - | |
158 | - for (int j = 0; j <= maxid; j++) { | |
159 | - int shmid; | |
160 | - struct shmid_ds shmseg; | |
161 | - struct ipc_perm *ipcp = &shmseg.shm_perm; | |
162 | - | |
163 | - shmid = shmctl(j, SHM_STAT, &shmseg); | |
164 | - if (shmid < 0 || (id > -1 && shmid != id)) { | |
165 | - continue; | |
166 | - } | |
167 | - | |
168 | - i++; | |
169 | - p->shm_perm.key = ipcp->KEY; | |
170 | - p->shm_perm.id = shmid; | |
171 | - p->shm_perm.mode = ipcp->mode; | |
172 | - p->shm_segsz = shmseg.shm_segsz; | |
173 | - p->shm_cprid = shmseg.shm_cpid; | |
174 | - p->shm_lprid = shmseg.shm_lpid; | |
175 | - p->shm_nattch = shmseg.shm_nattch; | |
176 | - p->shm_perm.uid = ipcp->uid; | |
177 | - p->shm_perm.gid = ipcp->gid; | |
178 | - p->shm_perm.cuid = ipcp->cuid; | |
179 | - p->shm_perm.cgid = ipcp->cuid; | |
180 | - p->shm_atim = shmseg.shm_atime; | |
181 | - p->shm_dtim = shmseg.shm_dtime; | |
182 | - p->shm_ctim = shmseg.shm_ctime; | |
183 | - p->shm_rss = 0xdead; | |
184 | - p->shm_swp = 0xdead; | |
185 | - | |
186 | - if (id < 0) { | |
187 | - p->next = xcalloc(1, sizeof(struct shm_data)); | |
188 | - p = p->next; | |
189 | - p->next = NULL; | |
190 | - } else | |
191 | - break; | |
192 | - } | |
193 | - | |
194 | - if (i == 0) | |
195 | - free(*shmds); | |
196 | - return i; | |
197 | + return -1; | |
198 | } | |
199 | ||
200 | void ipc_shm_free_info(struct shm_data *shmds) | |
201 | { | |
202 | - while (shmds) { | |
203 | - struct shm_data *next = shmds->next; | |
204 | - free(shmds); | |
205 | - shmds = next; | |
206 | - } | |
207 | + return; | |
208 | } | |
209 | ||
210 | static void get_sem_elements(struct sem_data *p) | |
211 | { | |
212 | - size_t i; | |
213 | - | |
214 | - if (!p || !p->sem_nsems || p->sem_perm.id < 0) | |
215 | - return; | |
216 | - | |
217 | - p->elements = xcalloc(p->sem_nsems, sizeof(struct sem_elem)); | |
218 | - | |
219 | - for (i = 0; i < p->sem_nsems; i++) { | |
220 | - struct sem_elem *e = &p->elements[i]; | |
221 | - union semun arg = { .val = 0 }; | |
222 | - | |
223 | - e->semval = semctl(p->sem_perm.id, i, GETVAL, arg); | |
224 | - if (e->semval < 0) | |
225 | - err(EXIT_FAILURE, _("%s failed"), "semctl(GETVAL)"); | |
226 | - | |
227 | - e->ncount = semctl(p->sem_perm.id, i, GETNCNT, arg); | |
228 | - if (e->ncount < 0) | |
229 | - err(EXIT_FAILURE, _("%s failed"), "semctl(GETNCNT)"); | |
230 | - | |
231 | - e->zcount = semctl(p->sem_perm.id, i, GETZCNT, arg); | |
232 | - if (e->zcount < 0) | |
233 | - err(EXIT_FAILURE, _("%s failed"), "semctl(GETZCNT)"); | |
234 | - | |
235 | - e->pid = semctl(p->sem_perm.id, i, GETPID, arg); | |
236 | - if (e->pid < 0) | |
237 | - err(EXIT_FAILURE, _("%s failed"), "semctl(GETPID)"); | |
238 | - } | |
239 | + return; | |
240 | } | |
241 | ||
242 | int ipc_sem_get_info(int id, struct sem_data **semds) | |
243 | { | |
244 | - FILE *f; | |
245 | - int i = 0, maxid; | |
246 | - struct sem_data *p; | |
247 | - struct seminfo dummy; | |
248 | - union semun arg; | |
249 | - | |
250 | - p = *semds = xcalloc(1, sizeof(struct sem_data)); | |
251 | - p->next = NULL; | |
252 | - | |
253 | - f = path_fopen("r", 0, _PATH_PROC_SYSV_SEM); | |
254 | - if (!f) | |
255 | - goto sem_fallback; | |
256 | - | |
257 | - while (fgetc(f) != '\n') ; /* skip header */ | |
258 | - | |
259 | - while (feof(f) == 0) { | |
260 | - if (fscanf(f, | |
261 | - "%d %d %o %" SCNu64 " %u %u %u %u %" | |
262 | - SCNi64 " %" SCNi64 "\n", | |
263 | - &p->sem_perm.key, | |
264 | - &p->sem_perm.id, | |
265 | - &p->sem_perm.mode, | |
266 | - &p->sem_nsems, | |
267 | - &p->sem_perm.uid, | |
268 | - &p->sem_perm.gid, | |
269 | - &p->sem_perm.cuid, | |
270 | - &p->sem_perm.cgid, | |
271 | - &p->sem_otime, | |
272 | - &p->sem_ctime) != 10) | |
273 | - continue; | |
274 | - | |
275 | - if (id > -1) { | |
276 | - /* ID specified */ | |
277 | - if (id == p->sem_perm.id) { | |
278 | - get_sem_elements(p); | |
279 | - i = 1; | |
280 | - break; | |
281 | - } else | |
282 | - continue; | |
283 | - } | |
284 | - | |
285 | - p->next = xcalloc(1, sizeof(struct sem_data)); | |
286 | - p = p->next; | |
287 | - p->next = NULL; | |
288 | - i++; | |
289 | - } | |
290 | - | |
291 | - if (i == 0) | |
292 | - free(*semds); | |
293 | - fclose(f); | |
294 | - return i; | |
295 | - | |
296 | - /* Fallback; /proc or /sys file(s) missing. */ | |
297 | -sem_fallback: | |
298 | - arg.array = (ushort *) (void *)&dummy; | |
299 | - maxid = semctl(0, 0, SEM_INFO, arg); | |
300 | - | |
301 | - for (int j = 0; j <= maxid; j++) { | |
302 | - int semid; | |
303 | - struct semid_ds semseg; | |
304 | - struct ipc_perm *ipcp = &semseg.sem_perm; | |
305 | - arg.buf = (struct semid_ds *)&semseg; | |
306 | - | |
307 | - semid = semctl(j, 0, SEM_STAT, arg); | |
308 | - if (semid < 0 || (id > -1 && semid != id)) { | |
309 | - continue; | |
310 | - } | |
311 | - | |
312 | - i++; | |
313 | - p->sem_perm.key = ipcp->KEY; | |
314 | - p->sem_perm.id = semid; | |
315 | - p->sem_perm.mode = ipcp->mode; | |
316 | - p->sem_nsems = semseg.sem_nsems; | |
317 | - p->sem_perm.uid = ipcp->uid; | |
318 | - p->sem_perm.gid = ipcp->gid; | |
319 | - p->sem_perm.cuid = ipcp->cuid; | |
320 | - p->sem_perm.cgid = ipcp->cuid; | |
321 | - p->sem_otime = semseg.sem_otime; | |
322 | - p->sem_ctime = semseg.sem_ctime; | |
323 | - | |
324 | - if (id < 0) { | |
325 | - p->next = xcalloc(1, sizeof(struct sem_data)); | |
326 | - p = p->next; | |
327 | - p->next = NULL; | |
328 | - i++; | |
329 | - } else { | |
330 | - get_sem_elements(p); | |
331 | - break; | |
332 | - } | |
333 | - } | |
334 | - | |
335 | - if (i == 0) | |
336 | - free(*semds); | |
337 | - return i; | |
338 | + return -1; | |
339 | } | |
340 | ||
341 | void ipc_sem_free_info(struct sem_data *semds) | |
342 | { | |
343 | - while (semds) { | |
344 | - struct sem_data *next = semds->next; | |
345 | - free(semds->elements); | |
346 | - free(semds); | |
347 | - semds = next; | |
348 | - } | |
349 | + return; | |
350 | } | |
351 | ||
352 | int ipc_msg_get_info(int id, struct msg_data **msgds) | |
353 | { | |
354 | - FILE *f; | |
355 | - int i = 0, maxid; | |
356 | - struct msg_data *p; | |
357 | - struct msqid_ds dummy; | |
358 | - struct msqid_ds msgseg; | |
359 | - | |
360 | - p = *msgds = xcalloc(1, sizeof(struct msg_data)); | |
361 | - p->next = NULL; | |
362 | - | |
363 | - f = path_fopen("r", 0, _PATH_PROC_SYSV_MSG); | |
364 | - if (!f) | |
365 | - goto msg_fallback; | |
366 | - | |
367 | - while (fgetc(f) != '\n') ; /* skip header */ | |
368 | - | |
369 | - while (feof(f) == 0) { | |
370 | - if (fscanf(f, | |
371 | - "%d %d %o %" SCNu64 " %" SCNu64 | |
372 | - " %u %u %u %u %u %u %" SCNi64 " %" SCNi64 " %" SCNi64 "\n", | |
373 | - &p->msg_perm.key, | |
374 | - &p->msg_perm.id, | |
375 | - &p->msg_perm.mode, | |
376 | - &p->q_cbytes, | |
377 | - &p->q_qnum, | |
378 | - &p->q_lspid, | |
379 | - &p->q_lrpid, | |
380 | - &p->msg_perm.uid, | |
381 | - &p->msg_perm.gid, | |
382 | - &p->msg_perm.cuid, | |
383 | - &p->msg_perm.cgid, | |
384 | - &p->q_stime, | |
385 | - &p->q_rtime, | |
386 | - &p->q_ctime) != 14) | |
387 | - continue; | |
388 | - | |
389 | - if (id > -1) { | |
390 | - /* ID specified */ | |
391 | - if (id == p->msg_perm.id) { | |
392 | - if (msgctl(id, IPC_STAT, &msgseg) != -1) | |
393 | - p->q_qbytes = msgseg.msg_qbytes; | |
394 | - i = 1; | |
395 | - break; | |
396 | - } else | |
397 | - continue; | |
398 | - } | |
399 | - | |
400 | - p->next = xcalloc(1, sizeof(struct msg_data)); | |
401 | - p = p->next; | |
402 | - p->next = NULL; | |
403 | - i++; | |
404 | - } | |
405 | - | |
406 | - if (i == 0) | |
407 | - free(*msgds); | |
408 | - fclose(f); | |
409 | - return i; | |
410 | - | |
411 | - /* Fallback; /proc or /sys file(s) missing. */ | |
412 | -msg_fallback: | |
413 | - maxid = msgctl(0, MSG_INFO, &dummy); | |
414 | - | |
415 | - for (int j = 0; j <= maxid; j++) { | |
416 | - int msgid; | |
417 | - struct ipc_perm *ipcp = &msgseg.msg_perm; | |
418 | - | |
419 | - msgid = msgctl(j, MSG_STAT, &msgseg); | |
420 | - if (msgid < 0 || (id > -1 && msgid != id)) { | |
421 | - continue; | |
422 | - } | |
423 | - | |
424 | - i++; | |
425 | - p->msg_perm.key = ipcp->KEY; | |
426 | - p->msg_perm.id = msgid; | |
427 | - p->msg_perm.mode = ipcp->mode; | |
428 | - p->q_cbytes = msgseg.msg_cbytes; | |
429 | - p->q_qnum = msgseg.msg_qnum; | |
430 | - p->q_lspid = msgseg.msg_lspid; | |
431 | - p->q_lrpid = msgseg.msg_lrpid; | |
432 | - p->msg_perm.uid = ipcp->uid; | |
433 | - p->msg_perm.gid = ipcp->gid; | |
434 | - p->msg_perm.cuid = ipcp->cuid; | |
435 | - p->msg_perm.cgid = ipcp->cgid; | |
436 | - p->q_stime = msgseg.msg_stime; | |
437 | - p->q_rtime = msgseg.msg_rtime; | |
438 | - p->q_ctime = msgseg.msg_ctime; | |
439 | - p->q_qbytes = msgseg.msg_qbytes; | |
440 | - | |
441 | - if (id < 0) { | |
442 | - p->next = xcalloc(1, sizeof(struct msg_data)); | |
443 | - p = p->next; | |
444 | - p->next = NULL; | |
445 | - } else | |
446 | - break; | |
447 | - } | |
448 | - | |
449 | - if (i == 0) | |
450 | - free(*msgds); | |
451 | - return i; | |
452 | + return -1; | |
453 | } | |
454 | ||
455 | void ipc_msg_free_info(struct msg_data *msgds) | |
456 | { | |
457 | - while (msgds) { | |
458 | - struct msg_data *next = msgds->next; | |
459 | - free(msgds); | |
460 | - msgds = next; | |
461 | - } | |
462 | + return; | |
463 | } | |
464 | ||
465 | void ipc_print_perms(FILE *f, struct ipc_stat *is) | |
466 | { | |
467 | - struct passwd *pw; | |
468 | - struct group *gr; | |
469 | - | |
470 | - fprintf(f, "%-10d %-10o", is->id, is->mode & 0777); | |
471 | - | |
472 | - if ((pw = getpwuid(is->cuid))) | |
473 | - fprintf(f, " %-10s", pw->pw_name); | |
474 | - else | |
475 | - fprintf(f, " %-10u", is->cuid); | |
476 | - | |
477 | - if ((gr = getgrgid(is->cgid))) | |
478 | - fprintf(f, " %-10s", gr->gr_name); | |
479 | - else | |
480 | - fprintf(f, " %-10u", is->cgid); | |
481 | - | |
482 | - if ((pw = getpwuid(is->uid))) | |
483 | - fprintf(f, " %-10s", pw->pw_name); | |
484 | - else | |
485 | - fprintf(f, " %-10u", is->uid); | |
486 | - | |
487 | - if ((gr = getgrgid(is->gid))) | |
488 | - fprintf(f, " %-10s\n", gr->gr_name); | |
489 | - else | |
490 | - fprintf(f, " %-10u\n", is->gid); | |
491 | + return; | |
492 | } | |
493 | ||
494 | void ipc_print_size(int unit, char *msg, uint64_t size, const char *end, | |
495 | int width) | |
496 | { | |
497 | - char format[32]; | |
498 | - | |
499 | - if (!msg) | |
500 | - /* NULL */ ; | |
501 | - else if (msg[strlen(msg) - 1] == '=') | |
502 | - printf("%s", msg); | |
503 | - else if (unit == IPC_UNIT_BYTES) | |
504 | - printf(_("%s (bytes) = "), msg); | |
505 | - else if (unit == IPC_UNIT_KB) | |
506 | - printf(_("%s (kbytes) = "), msg); | |
507 | - else | |
508 | - printf("%s = ", msg); | |
509 | - | |
510 | - switch (unit) { | |
511 | - case IPC_UNIT_DEFAULT: | |
512 | - case IPC_UNIT_BYTES: | |
513 | - sprintf(format, "%%%dju", width); | |
514 | - printf(format, size); | |
515 | - break; | |
516 | - case IPC_UNIT_KB: | |
517 | - sprintf(format, "%%%dju", width); | |
518 | - printf(format, size / 1024); | |
519 | - break; | |
520 | - case IPC_UNIT_HUMAN: | |
521 | - sprintf(format, "%%%ds", width); | |
522 | - printf(format, size_to_human_string(SIZE_SUFFIX_1LETTER, size)); | |
523 | - break; | |
524 | - default: | |
525 | - /* impossible occurred */ | |
526 | - abort(); | |
527 | - } | |
528 | - | |
529 | - if (end) | |
530 | - printf("%s", end); | |
531 | + return; | |
532 | } |