1450 INDEX
_SC_THREAD_KEYS_MAX constant, 668
_SC_THREAD_STACK_MIN constant, 682
_SC_THREADS constant, 221
_SC_XOPEN_UNIX constant, 221
_SEM_SEMUN_UNDEFINED constant, 970
_setjmp(), 429
_SVID_SOURCE feature test macro, 62
_sys_errlist variable, 664
_sys_nerr variable, 664
_XOPEN_SOURCE feature test macro, 62, 63
_XOPEN_UNIX constant, 221Numbers
2MSL, 1274
3BSD, 4
4.2BSD, 4, 155, 342, 390, 443, 476, 776,
1149, 1180
4.3BSD, 4
4.4BSD, 4, 17, 1442
4.4BSD-Lite, 8
386/BSD, 7A
a.out (executable file format), 113
ABI, 118, 867
abort(), 390, 426, 433–434, 446
prototype, 433
absolute pathname, 29, 367
abstract socket binding, 1175
ac command, 818
accept(), 426, 673, 801, 1152, 1157–1158
diagram, 1156
example of use, 1168, 1222
inheritance of file flags and socket
options, 1281
interrupted by signal handler, 444
prototype, 1157
RLIMIT_NOFILE resource limit and, 762
accept4(), 1158
interrupted by signal handler, 444
access control list (ACL), 319–337,
800, 1440
access ACL, 327
ACL entry, 320–321
application programming interface,
diagram, 330
default ACL, 327
diagram, 320
extended ACL, 321
group class, 324–325
limits on number of entries, 328–329
long text form, 323
mask entry, 321, 323, 324–325
minimal ACL, 321permission set, 320
permission-checking algorithm,
321–322
short text form, 323
tag qualifier, 320, 321, 323, 332
tag type, 320, 323, 331
access mode, file, 72, 75, 93, 95
access(), 298–299, 345, 426
prototype, 299
acct structure, 593–594
definition, 593
acct(), 345, 592–593, 801
example of use, 593
prototype, 592
acct_on.c, 592
acct_v3 structure, 597–598
definition, 598
acct_v3_view.c, 598
acct_view.c, 596
accton command, 592
ACK control bit (TCP), 1267
ACL. See access control list
acl_add_perm(), 332
diagram, 330
acl_calc_mask(), 333
acl_check(), 334
acl_clear_perms(), 332
diagram, 330
acl_create_entry(), 332
diagram, 330
acl_delete_def_file(), 334
acl_delete_entry(), 333
diagram, 330
acl_delete_perm(), 332
diagram, 330
acl_dup(), 334
acl_entry_t data type, 331
diagram, 330
example of use, 335
acl_error(), 334
ACL_EXECUTE constant, 332
ACL_FIRST_ENTRY constant, 331
acl_free(), 334
example of use, 336
acl_from_text(), 333
diagram, 330
acl_get_entry(), 331
diagram, 330
example of use, 335
acl_get_file(), 331
diagram, 330
example of use, 335
acl_get_perm(), 332
diagram, 330
example of use, 336