The Linux Programming Interface

INDEX 1499

restarting, 442–445
setting timeout on, 486–487
system clock, updating, 204–205
system CPU time, 40, 206
system data types, 63–66
casting in printf() calls, 66
system limits, SUSv3, 212–215
indeterminate limits, 219
retrieving, 215–217
file-related limits, 217–218
system options, SUSv3, 219–221
retrieving, 215–217
file-related options, 217–218
system programming, xxxi
System V, 4
System V Interface Definition (SVID),
17, 62
System V IPC, 921–936
algorithm employed by get calls,
931–933
compared with POSIX IPC, 1061–1062
control operations, 924
design problems, 884
identifier, 923, 931
key, 64, 923, 925–927
limits, 935–936
object
associated data structure, 927–929
diagram, 932
creating, 923–924
deleting, 924
listing, 934–935
permissions, 800, 927–929
persistence, 924
re-creating after server crash, 930
removing, 934
portability, 884, 1061
System V message queue, 882, 883, 886,
937–964
associated data structure, 948–950
compared with POSIX message
queue,1086–1087
control operations, 947
creating, 938–940
deleting, 947
disadvantages, 961–962
limits, 950–951
messages, 940
receiving, 943–946
nonblocking, 943
sending, 940–942
nonblocking, 941
use in client-server applications,
953–961
System V Release 4 (SVR4), 4, 17, 1440

System V semaphore, 882, 886, 965–995

adjustment on process termination, 533

associated data structure, 972–973

compared with POSIX semaphore,

1103–1104

control operations, 969–972

creating, 969

deleting, 971

disadvantages, 993

initialization, 971, 974, 975–978

limits, 991–993

order of handling of multiple blocked

operations, 986

performing operations on, 978–983

starvation, 986

undo value (semadj), 533, 607, 614, 619,

691, 693, 986–988, 991

System V shared memory, 614, 882, 886,

997–1016

associated data structure, 1012–1014

attaching, 999

compared with other shared memory

APIs, 1115–1116

control operations, 1011–1012

creating, 998–999

deleting, 1011

detaching, 1000

on process termination, 533

limits, 1014–1015

location in process virtual memory,

1006–1009

locking into memory, 1012

storing pointers in, 1010

system(), 582–588, 656, 673

avoid in privileged programs, 788

code of implementation, 582–583,

586–587

diagram, 584

example of use, 581

implementation, 582–588

prototype, 579

system.c, 586

sysv_signal(), 456

prototype, 456

T

t_ prefix (in names of example

programs), 100

t_chown.c, 293

t_clock_nanosleep.c, 1429

t_clone.c, 601

t_dirbasename.c, 371

t_execl.c, 571

t_execle.c, 570