1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
|
# SOME DESCRIPTIVE TITLE
# Copyright (C) YEAR Free Software Foundation, Inc.
# This file is distributed under the same license as the PACKAGE package.
# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
#
#, fuzzy
msgid ""
msgstr ""
"Project-Id-Version: PACKAGE VERSION\n"
"POT-Creation-Date: 2024-03-01 17:07+0100\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
"Language-Team: LANGUAGE <LL@li.org>\n"
"Language: \n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
#. type: TH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "semop"
msgstr ""
#. type: TH
#: archlinux fedora-40 fedora-rawhide mageia-cauldron
#, no-wrap
msgid "2023-10-31"
msgstr ""
#. type: TH
#: archlinux fedora-40 fedora-rawhide mageia-cauldron
#, no-wrap
msgid "Linux man-pages 6.06"
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "NAME"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "semop, semtimedop - System V semaphore operations"
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "LIBRARY"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Standard C library (I<libc>, I<-lc>)"
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "SYNOPSIS"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<#include E<lt>sys/sem.hE<gt>>\n"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid ""
"B<int semop(int >I<semid>B<, struct sembuf *>I<sops>B<, size_t >I<nsops>B<);>\n"
"B<int semtimedop(int >I<semid>B<, struct sembuf *>I<sops>B<, size_t >I<nsops>B<,>\n"
"B< const struct timespec *_Nullable >I<timeout>B<);>\n"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Feature Test Macro Requirements for glibc (see B<feature_test_macros>(7)):"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "B<semtimedop>():"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid " _GNU_SOURCE\n"
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "DESCRIPTION"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Each semaphore in a System\\ V semaphore set has the following associated "
"values:"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid ""
"unsigned short semval; /* semaphore value */\n"
"unsigned short semzcnt; /* # waiting for zero */\n"
"unsigned short semncnt; /* # waiting for increase */\n"
"pid_t sempid; /* PID of process that last\n"
" modified the semaphore value */\n"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"B<semop>() performs operations on selected semaphores in the set indicated "
"by I<semid>. Each of the I<nsops> elements in the array pointed to by "
"I<sops> is a structure that specifies an operation to be performed on a "
"single semaphore. The elements of this structure are of type I<struct "
"sembuf>, containing the following members:"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid ""
"unsigned short sem_num; /* semaphore number */\n"
"short sem_op; /* semaphore operation */\n"
"short sem_flg; /* operation flags */\n"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Flags recognized in I<sem_flg> are B<IPC_NOWAIT> and B<SEM_UNDO>. If an "
"operation specifies B<SEM_UNDO>, it will be automatically undone when the "
"process terminates."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The set of operations contained in I<sops> is performed in I<array order>, "
"and I<atomically>, that is, the operations are performed either as a "
"complete unit, or not at all. The behavior of the system call if not all "
"operations can be performed immediately depends on the presence of the "
"B<IPC_NOWAIT> flag in the individual I<sem_flg> fields, as noted below."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Each operation is performed on the I<sem_num>-th semaphore of the semaphore "
"set, where the first semaphore of the set is numbered 0. There are three "
"types of operation, distinguished by the value of I<sem_op>."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"If I<sem_op> is a positive integer, the operation adds this value to the "
"semaphore value (I<semval>). Furthermore, if B<SEM_UNDO> is specified for "
"this operation, the system subtracts the value I<sem_op> from the semaphore "
"adjustment (I<semadj>) value for this semaphore. This operation can always "
"proceed\\[em]it never forces a thread to wait. The calling process must "
"have alter permission on the semaphore set."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"If I<sem_op> is zero, the process must have read permission on the semaphore "
"set. This is a \"wait-for-zero\" operation: if I<semval> is zero, the "
"operation can immediately proceed. Otherwise, if B<IPC_NOWAIT> is specified "
"in I<sem_flg>, B<semop>() fails with I<errno> set to B<EAGAIN> (and none of "
"the operations in I<sops> is performed). Otherwise, I<semzcnt> (the count "
"of threads waiting until this semaphore's value becomes zero) is "
"incremented by one and the thread sleeps until one of the following occurs:"
msgstr ""
#. type: IP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "\\[bu]"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"I<semval> becomes 0, at which time the value of I<semzcnt> is decremented."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The semaphore set is removed: B<semop>() fails, with I<errno> set to "
"B<EIDRM>."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The calling thread catches a signal: the value of I<semzcnt> is decremented "
"and B<semop>() fails, with I<errno> set to B<EINTR>."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"If I<sem_op> is less than zero, the process must have alter permission on "
"the semaphore set. If I<semval> is greater than or equal to the absolute "
"value of I<sem_op>, the operation can proceed immediately: the absolute "
"value of I<sem_op> is subtracted from I<semval>, and, if B<SEM_UNDO> is "
"specified for this operation, the system adds the absolute value of "
"I<sem_op> to the semaphore adjustment (I<semadj>) value for this "
"semaphore. If the absolute value of I<sem_op> is greater than I<semval>, "
"and B<IPC_NOWAIT> is specified in I<sem_flg>, B<semop>() fails, with "
"I<errno> set to B<EAGAIN> (and none of the operations in I<sops> is "
"performed). Otherwise, I<semncnt> (the counter of threads waiting for this "
"semaphore's value to increase) is incremented by one and the thread sleeps "
"until one of the following occurs:"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"I<semval> becomes greater than or equal to the absolute value of I<sem_op>: "
"the operation now proceeds, as described above."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The semaphore set is removed from the system: B<semop>() fails, with "
"I<errno> set to B<EIDRM>."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The calling thread catches a signal: the value of I<semncnt> is decremented "
"and B<semop>() fails, with I<errno> set to B<EINTR>."
msgstr ""
#. and
#. .I sem_ctime
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"On successful completion, the I<sempid> value for each semaphore specified "
"in the array pointed to by I<sops> is set to the caller's process ID. In "
"addition, the I<sem_otime> is set to the current time."
msgstr ""
#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "semtimedop()"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"B<semtimedop>() behaves identically to B<semop>() except that in those "
"cases where the calling thread would sleep, the duration of that sleep is "
"limited by the amount of elapsed time specified by the I<timespec> structure "
"whose address is passed in the I<timeout> argument. (This sleep interval "
"will be rounded up to the system clock granularity, and kernel scheduling "
"delays mean that the interval may overrun by a small amount.) If the "
"specified time limit has been reached, B<semtimedop>() fails with I<errno> "
"set to B<EAGAIN> (and none of the operations in I<sops> is performed). If "
"the I<timeout> argument is NULL, then B<semtimedop>() behaves exactly like "
"B<semop>()."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Note that if B<semtimedop>() is interrupted by a signal, causing the call "
"to fail with the error B<EINTR>, the contents of I<timeout> are left "
"unchanged."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "RETURN VALUE"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"On success, B<semop>() and B<semtimedop>() return 0. On failure, they "
"return -1, and set I<errno> to indicate the error."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "ERRORS"
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<E2BIG>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The argument I<nsops> is greater than B<SEMOPM>, the maximum number of "
"operations allowed per system call."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<EACCES>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The calling process does not have the permissions required to perform the "
"specified semaphore operations, and does not have the B<CAP_IPC_OWNER> "
"capability in the user namespace that governs its IPC namespace."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<EAGAIN>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"An operation could not proceed immediately and either B<IPC_NOWAIT> was "
"specified in I<sem_flg> or the time limit specified in I<timeout> expired."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<EFAULT>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"An address specified in either the I<sops> or the I<timeout> argument isn't "
"accessible."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<EFBIG>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"For some operation the value of I<sem_num> is less than 0 or greater than or "
"equal to the number of semaphores in the set."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<EIDRM>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "The semaphore set was removed."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<EINTR>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"While blocked in this system call, the thread caught a signal; see "
"B<signal>(7)."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<EINVAL>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The semaphore set doesn't exist, or I<semid> is less than zero, or I<nsops> "
"has a nonpositive value."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<ENOMEM>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The I<sem_flg> of some operation specified B<SEM_UNDO> and the system does "
"not have enough memory to allocate the undo structure."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<ERANGE>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"For some operation I<sem_op+semval> is greater than B<SEMVMX>, the "
"implementation dependent maximum value for I<semval>."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "STANDARDS"
msgstr ""
#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
msgid "POSIX.1-2008."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "VERSIONS"
msgstr ""
#. SVr4 documents additional error conditions EINVAL, EFBIG, ENOSPC.
#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Linux 2.5.52 (backported into Linux 2.4.22), glibc 2.3.3. POSIX.1-2001, "
"SVr4."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "NOTES"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The I<sem_undo> structures of a process aren't inherited by the child "
"produced by B<fork>(2), but they are inherited across an B<execve>(2) "
"system call."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"B<semop>() is never automatically restarted after being interrupted by a "
"signal handler, regardless of the setting of the B<SA_RESTART> flag when "
"establishing a signal handler."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"A semaphore adjustment (I<semadj>) value is a per-process, per-semaphore "
"integer that is the negated sum of all operations performed on a semaphore "
"specifying the B<SEM_UNDO> flag. Each process has a list of I<semadj> "
"values\\[em]one value for each semaphore on which it has operated using "
"B<SEM_UNDO>. When a process terminates, each of its per-semaphore I<semadj> "
"values is added to the corresponding semaphore, thus undoing the effect of "
"that process's operations on the semaphore (but see BUGS below). When a "
"semaphore's value is directly set using the B<SETVAL> or B<SETALL> request "
"to B<semctl>(2), the corresponding I<semadj> values in all processes are "
"cleared. The B<clone>(2) B<CLONE_SYSVSEM> flag allows more than one "
"process to share a I<semadj> list; see B<clone>(2) for details."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The I<semval>, I<sempid>, I<semzcnt>, and I<semnct> values for a semaphore "
"can all be retrieved using appropriate B<semctl>(2) calls."
msgstr ""
#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Semaphore limits"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The following limits on semaphore set resources affect the B<semop>() call:"
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<SEMOPM>"
msgstr ""
#. commit e843e7d2c88b7db107a86bd2c7145dc715c058f4
#. This /proc file is not available in Linux 2.2 and earlier -- MTK
#. See comment in Linux 3.19 source file include/uapi/linux/sem.h
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Maximum number of operations allowed for one B<semop>() call. Before Linux "
"3.19, the default value for this limit was 32. Since Linux 3.19, the "
"default value is 500. On Linux, this limit can be read and modified via the "
"third field of I</proc/sys/kernel/sem>. I<Note>: this limit should not be "
"raised above 1000, because of the risk of that B<semop>() fails due to "
"kernel memory fragmentation when allocating memory to copy the I<sops> array."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<SEMVMX>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Maximum allowable value for I<semval>: implementation dependent (32767)."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The implementation has no intrinsic limits for the adjust on exit maximum "
"value (B<SEMAEM>), the system wide maximum number of undo structures "
"(B<SEMMNU>) and the per-process maximum number of undo entries system "
"parameters."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "BUGS"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"When a process terminates, its set of associated I<semadj> structures is "
"used to undo the effect of all of the semaphore operations it performed with "
"the B<SEM_UNDO> flag. This raises a difficulty: if one (or more) of these "
"semaphore adjustments would result in an attempt to decrease a semaphore's "
"value below zero, what should an implementation do? One possible approach "
"would be to block until all the semaphore adjustments could be performed. "
"This is however undesirable since it could force process termination to "
"block for arbitrarily long periods. Another possibility is that such "
"semaphore adjustments could be ignored altogether (somewhat analogously to "
"failing when B<IPC_NOWAIT> is specified for a semaphore operation). Linux "
"adopts a third approach: decreasing the semaphore value as far as possible "
"(i.e., to zero) and allowing process termination to proceed immediately."
msgstr ""
#. The bug report:
#. http://marc.theaimsgroup.com/?l=linux-kernel&m=110260821123863&w=2
#. the fix:
#. http://marc.theaimsgroup.com/?l=linux-kernel&m=110261701025794&w=2
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"In Linux 2.6.x, x E<lt>= 10, there is a bug that in some circumstances "
"prevents a thread that is waiting for a semaphore value to become zero from "
"being woken up when the value does actually become zero. This bug is fixed "
"in Linux 2.6.11."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "EXAMPLES"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The following code segment uses B<semop>() to atomically wait for the value "
"of semaphore 0 to become zero, and then increment the semaphore value by one."
msgstr ""
#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-tumbleweed
#, no-wrap
msgid ""
"struct sembuf sops[2];\n"
"int semid;\n"
"\\&\n"
"/* Code to set I<semid> omitted */\n"
"\\&\n"
"sops[0].sem_num = 0; /* Operate on semaphore 0 */\n"
"sops[0].sem_op = 0; /* Wait for value to equal 0 */\n"
"sops[0].sem_flg = 0;\n"
"\\&\n"
"sops[1].sem_num = 0; /* Operate on semaphore 0 */\n"
"sops[1].sem_op = 1; /* Increment value by one */\n"
"sops[1].sem_flg = 0;\n"
"\\&\n"
"if (semop(semid, sops, 2) == -1) {\n"
" perror(\"semop\");\n"
" exit(EXIT_FAILURE);\n"
"}\n"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"A further example of the use of B<semop>() can be found in B<shmop>(2)."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "SEE ALSO"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"B<clone>(2), B<semctl>(2), B<semget>(2), B<sigaction>(2), "
"B<capabilities>(7), B<sem_overview>(7), B<sysvipc>(7), B<time>(7)"
msgstr ""
#. type: TH
#: debian-bookworm
#, no-wrap
msgid "2023-02-05"
msgstr ""
#. type: TH
#: debian-bookworm
#, no-wrap
msgid "Linux man-pages 6.03"
msgstr ""
#. type: Plain text
#: debian-bookworm
msgid ""
"B<semtimedop>() first appeared in Linux 2.5.52, and was subsequently "
"backported into Linux 2.4.22. glibc support for B<semtimedop>() first "
"appeared in Linux 2.3.3."
msgstr ""
#. SVr4 documents additional error conditions EINVAL, EFBIG, ENOSPC.
#. type: Plain text
#: debian-bookworm
msgid "POSIX.1-2001, POSIX.1-2008, SVr4."
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"struct sembuf sops[2];\n"
"int semid;\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid "/* Code to set I<semid> omitted */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"sops[0].sem_num = 0; /* Operate on semaphore 0 */\n"
"sops[0].sem_op = 0; /* Wait for value to equal 0 */\n"
"sops[0].sem_flg = 0;\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"sops[1].sem_num = 0; /* Operate on semaphore 0 */\n"
"sops[1].sem_op = 1; /* Increment value by one */\n"
"sops[1].sem_flg = 0;\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"if (semop(semid, sops, 2) == -1) {\n"
" perror(\"semop\");\n"
" exit(EXIT_FAILURE);\n"
"}\n"
msgstr ""
#. type: TH
#: debian-unstable opensuse-tumbleweed
#, no-wrap
msgid "2023-05-03"
msgstr ""
#. type: TH
#: debian-unstable opensuse-tumbleweed
#, no-wrap
msgid "Linux man-pages 6.05.01"
msgstr ""
#. type: TH
#: opensuse-leap-15-6
#, no-wrap
msgid "2023-03-30"
msgstr ""
#. type: TH
#: opensuse-leap-15-6
#, no-wrap
msgid "Linux man-pages 6.04"
msgstr ""
|