.\" Modifications for 2.2 and 2.4 Copyright (C) 2002 Ian Redfern
.\" <redferni@logica.com>
.\"
+.\" %%%LICENSE_START(VERBATIM)
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
+.\" %%%LICENSE_END
.\"
-.TH SYSCALLS 2 2009-05-06 "Linux" "Linux Programmer's Manual"
+.TH SYSCALLS 2 2014-03-31 "Linux" "Linux Programmer's Manual"
.SH NAME
syscalls \- Linux system calls
.SH SYNOPSIS
wrapper function checks which of those system calls
are provided by the kernel and determines which should be employed.
.SS System call list
-Below is a list of those system calls that are common to most platforms.
+Below is a list of the Linux system calls.
In the list, the
.I Kernel
column indicates the kernel version
and new system calls may appear in each 2.6.x release.
In this case, the exact version number where the system call appeared
is shown.
+This convention continues with the 3.x kernel series,
+which followed on from kernel 2.6.39.
.IP *
In some cases, a system call was added to a stable kernel
series after it branched from the previous stable kernel
When this is so, the version where the system call appeared
in both of the major kernel series is listed.
.PP
-The list of system calls that are available as at kernel 2.6.28
+The list of system calls that are available as at kernel 3.14
(or in a few cases only on older kernels) is as follows:
.\"
.\" Looking at scripts/checksyscalls.sh in the kernel source is
-.\" instructive about i386 specifics.
+.\" instructive about x86 specifics.
.\"
+.ad l
.TS
l l l
---
\fBSystem call\fP \fBKernel\fP \fBNotes\fP
\fB_llseek\fP(2) 1.2
-\fB_newselect\fP(2)
-\fB_sysctl\fP(2)
-\fBaccept\fP(2)
+\fB_newselect\fP(2) 2.0
+\fB_sysctl\fP(2) 2.0
+\fBaccept\fP(2) 2.0 See notes on \fBsocketcall\fP(2)
\fBaccept4\fP(2) 2.6.28
-\fBaccess\fP(2)
-\fBacct\fP(2)
+\fBaccess\fP(2) 1.0
+\fBacct\fP(2) 1.0
\fBadd_key\fP(2) 2.6.11
-\fBadjtimex\fP(2)
-\fBafs_syscall\fP(2) Not implemented
-\fBalarm\fP(2)
+\fBadjtimex\fP(2) 1.0
+\fBalarm\fP(2) 1.0
\fBalloc_hugepages\fP(2) 2.5.36 Removed in 2.5.44
-\fBbdflush\fP(2)
-\fBbind\fP(2)
-\fBbreak\fP(2) Not implemented
-\fBbrk\fP(2)
-\fBcacheflush\fP(2) 1.2 Not on i386
+\fBbdflush\fP(2) 1.2 T{
+Deprecated (does nothing)
+.br
+since 2.6
+T}
+\fBbind\fP(2) 2.0 See notes on \fBsocketcall\fP(2)
+\fBbrk\fP(2) 1.0
+\fBcacheflush\fP(2) 1.2 Not on x86
\fBcapget\fP(2) 2.2
\fBcapset\fP(2) 2.2
-\fBchdir\fP(2)
-\fBchmod\fP(2)
-\fBchown\fP(2)
+\fBchdir\fP(2) 1.0
+\fBchmod\fP(2) 1.0
+\fBchown\fP(2) 2.2 T{
+See \fBchown\fP(2) for
+.br
+version details
+T}
\fBchown32\fP(2) 2.4
-\fBchroot\fP(2)
+\fBchroot\fP(2) 1.0
+\fBclock_adjtime\fP(2) 2.6.39
\fBclock_getres\fP(2) 2.6
\fBclock_gettime\fP(2) 2.6
\fBclock_nanosleep\fP(2) 2.6
\fBclock_settime\fP(2) 2.6
-\fBclone\fP(2)
-\fBclose\fP(2)
-\fBconnect\fP(2)
-\fBcreat\fP(2)
-\fBcreate_module\fP(2)
-\fBdelete_module\fP(2)
-\fBdup\fP(2)
-\fBdup2\fP(2)
+\fBclone\fP(2) 1.0
+\fBclose\fP(2) 1.0
+\fBconnect\fP(2) 2.0 See notes on \fBsocketcall\fP(2)
+\fBcreat\fP(2) 1.0
+\fBcreate_module\fP(2) Removed in 2.6
+\fBdelete_module\fP(2) 1.0
+\fBdup\fP(2) 1.0
+\fBdup2\fP(2) 1.0
\fBdup3\fP(2) 2.6.27
\fBepoll_create\fP(2) 2.6
\fBepoll_create1\fP(2) 2.6.27
\fBepoll_wait\fP(2) 2.6
\fBeventfd\fP(2) 2.6.22
\fBeventfd2\fP(2) 2.6.27
-\fBexecve\fP(2)
-\fBexit\fP(2)
+\fBexecve\fP(2) 1.0
+\fBexit\fP(2) 1.0
\fBexit_group\fP(2) 2.6
\fBfaccessat\fP(2) 2.6.16
\fBfadvise64\fP(2) 2.6
.\" Implements \fBposix_fadvise\fP(2)
\fBfadvise64_64\fP(2) 2.6
\fBfallocate\fP(2) 2.6.23
-\fBfchdir\fP(2)
-\fBfchmod\fP(2)
+\fBfanotify_init\fP(2) 2.6.37
+\fBfanotify_mark\fP(2) 2.6.37
+.\" The fanotify calls were added in Linux 2.6.36,
+.\" but disabled while the API was finalized.
+\fBfchdir\fP(2) 1.0
+\fBfchmod\fP(2) 1.0
\fBfchmodat\fP(2) 2.6.16
-\fBfchown\fP(2)
+\fBfchown\fP(2) 1.0
\fBfchown32\fP(2) 2.4
\fBfchownat\fP(2) 2.6.16
-\fBfcntl\fP(2)
+\fBfcntl\fP(2) 1.0
\fBfcntl64\fP(2) 2.4
-\fBfdatasync\fP(2)
+\fBfdatasync\fP(2) 2.0
\fBfgetxattr\fP(2) 2.6; 2.4.18
+\fBfinit_module\fP(2) 3.8
\fBflistxattr\fP(2) 2.6; 2.4.18
\fBflock\fP(2) 2.0
-\fBfork\fP(2)
+\fBfork\fP(2) 1.0
\fBfree_hugepages\fP(2) 2.5.36 Removed in 2.5.44
\fBfremovexattr\fP(2) 2.6; 2.4.18
\fBfsetxattr\fP(2) 2.6; 2.4.18
-\fBfstat\fP(2)
+\fBfstat\fP(2) 1.0
\fBfstat64\fP(2) 2.4
\fBfstatat64\fP(2) 2.6.16
-\fBfstatfs\fP(2)
+\fBfstatfs\fP(2) 1.0
\fBfstatfs64\fP(2) 2.6
-\fBfsync\fP(2)
-\fBftime\fP(2) Not implemented
-.\" Implemented in glibc; see \fBftime\fP(3)
-\fBftruncate\fP(2)
+\fBfsync\fP(2) 1.0 1.0
+\fBftruncate\fP(2) 1.0
\fBftruncate64\fP(2) 2.4
\fBfutex\fP(2) 2.6
\fBfutimesat\fP(2) 2.6.16
-\fBget_kernel_syms\fP(2)
+\fBget_kernel_syms\fP(2) Removed in 2.6
\fBget_mempolicy\fP(2) 2.6.6
\fBget_robust_list\fP(2) 2.6.17
\fBget_thread_area\fP(2) 2.6
\fBgetcwd\fP(2) 2.2
\fBgetdents\fP(2) 2.0
\fBgetdents64\fP(2) 2.4
-\fBgetegid\fP(2)
+\fBgetegid\fP(2) 1.0
\fBgetegid32\fP(2) 2.4
-\fBgeteuid\fP(2)
+\fBgeteuid\fP(2) 1.0
\fBgeteuid32\fP(2) 2.4
-\fBgetgid\fP(2)
+\fBgetgid\fP(2) 1.0
\fBgetgid32\fP(2) 2.4
-\fBgetgroups\fP(2)
+\fBgetgroups\fP(2) 1.0
\fBgetgroups32\fP(2) 2.4
-\fBgetitimer\fP(2)
-\fBgetpeername\fP(2)
-\fBgetpagesize\fP(2) 2.0 Not on i386
-\fBgetpgid\fP(2)
-\fBgetpgrp\fP(2)
-\fBgetpid\fP(2)
-\fBgetpmsg\fP(2) Not implemented
-.\" Reserved for STREAMS support
-\fBgetppid\fP(2)
-\fBgetpriority\fP(2)
+\fBgetitimer\fP(2) 1.0
+\fBgetpeername\fP(2) 2.0 See notes on \fBsocketcall\fP(2)
+\fBgetpagesize\fP(2) 2.0 Not on x86
+\fBgetpgid\fP(2) 1.0
+\fBgetpgrp\fP(2) 1.0
+\fBgetpid\fP(2) 1.0
+\fBgetppid\fP(2) 1.0
+\fBgetpriority\fP(2) 1.0
\fBgetresgid\fP(2) 2.2
\fBgetresgid32\fP(2) 2.4
\fBgetresuid\fP(2) 2.2
\fBgetresuid32\fP(2) 2.4
-\fBgetrlimit\fP(2)
-\fBgetrusage\fP(2)
+\fBgetrlimit\fP(2) 1.0
+\fBgetrusage\fP(2) 1.0
\fBgetsid\fP(2) 2.0
-\fBgetsockname\fP(2)
-\fBgetsockopt\fP(2)
+\fBgetsockname\fP(2) 2.0 See notes on \fBsocketcall\fP(2)
+\fBgetsockopt\fP(2) 2.0 See notes on \fBsocketcall\fP(2)
\fBgettid\fP(2) 2.4.11
-\fBgettimeofday\fP(2)
-\fBgetuid\fP(2)
+\fBgettimeofday\fP(2) 1.0
+\fBgetuid\fP(2) 1.0
\fBgetuid32\fP(2) 2.4
.\" \fBgetunwind\fP(2) 2.4.8 ia64; DEPRECATED
\fBgetxattr\fP(2) 2.6; 2.4.18
-\fBgtty\fP(2) Not implemented
-\fBidle\fP(2) Not implemented
-\fBinit_module\fP(2)
+\fBinit_module\fP(2) 1.0
\fBinotify_add_watch\fP(2) 2.6.13
\fBinotify_init\fP(2) 2.6.13
\fBinotify_init1\fP(2) 2.6.27
\fBio_getevents\fP(2) 2.6
\fBio_setup\fP(2) 2.6
\fBio_submit\fP(2) 2.6
-\fBioctl\fP(2)
-\fBioperm\fP(2)
-\fBiopl\fP(2)
+\fBioctl\fP(2) 1.0
+\fBioperm\fP(2) 1.0
+\fBiopl\fP(2) 1.0
\fBioprio_get\fP(2) 2.6.13
\fBioprio_set\fP(2) 2.6.13
-\fBipc\fP(2)
+\fBipc\fP(2) 1.0
.\" Implements System V IPC calls
-\fBkexec_load\fP(2) 2.6.7
+\fBkcmp\fP(2) 3.5
+\fBkern_features\fP(2) 3.7 Sparc64
+\fBkexec_load\fP(2) 2.6.13
+.\" The entry in the syscall table was reserved starting in 2.6.7
.\" Was named sys_kexec_load() from 2.6.7 to 2.6.16
\fBkeyctl\fP(2) 2.6.11
-\fBkill\fP(2)
-\fBlchown\fP(2) 2.2
+\fBkill\fP(2) 1.0
+\fBlchown\fP(2) 1.0 T{
+See \fBchown\fP(2) for
+.br
+version details
+T}
\fBlchown32\fP(2) 2.4
\fBlgetxattr\fP(2) 2.6; 2.4.18
-\fBlink\fP(2)
+\fBlink\fP(2) 1.0
\fBlinkat\fP(2) 2.6.16
-\fBlisten\fP(2)
+\fBlisten\fP(2) 2.0 See notes on \fBsocketcall\fP(2)
\fBlistxattr\fP(2) 2.6; 2.4.18
\fBllistxattr\fP(2) 2.6; 2.4.18
-\fBlock\fP(2) Not implemented
\fBlookup_dcookie\fP(2) 2.6
\fBlremovexattr\fP(2) 2.6; 2.4.18
-\fBlseek\fP(2)
+\fBlseek\fP(2) 1.0
\fBlsetxattr\fP(2) 2.6; 2.4.18
-\fBlstat\fP(2)
+\fBlstat\fP(2) 1.0
\fBlstat64\fP(2) 2.4
\fBmadvise\fP(2) 2.4
-\fBmadvise1\fP(2) 2.4
\fBmbind\fP(2) 2.6.6
.\" \fBmemory_ordering\fP(2) ??? Sparc64
\fBmigrate_pages\fP(2) 2.6.16
\fBmincore\fP(2) 2.4
-\fBmkdir\fP(2)
+\fBmkdir\fP(2) 1.0
\fBmkdirat\fP(2) 2.6.16
-\fBmknod\fP(2)
+\fBmknod\fP(2) 1.0
\fBmknodat\fP(2) 2.6.16
-\fBmlock\fP(2)
-\fBmlockall\fP(2)
-\fBmmap\fP(2)
+\fBmlock\fP(2) 2.0
+\fBmlockall\fP(2) 2.0
+\fBmmap\fP(2) 1.0
\fBmmap2\fP(2) 2.4
-\fBmodify_ldt\fP(2)
-\fBmount\fP(2)
+\fBmodify_ldt\fP(2) 1.0
+\fBmount\fP(2) 1.0
\fBmove_pages\fP(2) 2.6.18
-\fBmprotect\fP(2)
-\fBmpx\fP(2) Not implemented
+\fBmprotect\fP(2) 1.0
\fBmq_getsetattr\fP(2) 2.6.6
.\" Implements \fBmq_getattr\fP(3) and \fBmq_setattr\fP(3)
\fBmq_notify\fP(2) 2.6.6
\fBmq_open\fP(2) 2.6.6
\fBmq_timedreceive\fP(2) 2.6.6
\fBmq_timedsend\fP(2) 2.6.6
-\fBmq_unlink\fP(2)
+\fBmq_unlink\fP(2) 2.6.6
\fBmremap\fP(2) 2.0
-\fBmsgctl\fP(2)
-\fBmsgget\fP(2)
-\fBmsgrcv\fP(2)
-\fBmsgsnd\fP(2)
+\fBmsgctl\fP(2) 2.0 See notes on \fBipc\fP(2)
+\fBmsgget\fP(2) 2.0 See notes on \fBipc\fP(2)
+\fBmsgrcv\fP(2) 2.0 See notes on \fBipc\fP(2)
+\fBmsgsnd\fP(2) 2.0 See notes on \fBipc\fP(2)
\fBmsync\fP(2) 2.0
.\" \fBmultiplexer\fP(2) ?? __NR_multiplexer reserved on
.\" PowerPC, but unimplemented?
-\fBmunlock\fP(2)
-\fBmunlockall\fP(2)
-\fBmunmap\fP(2)
+\fBmunlock\fP(2) 2.0
+\fBmunlockall\fP(2) 2.0
+\fBmunmap\fP(2) 1.0
+\fBname_to_handle_at\fP(2) 2.6.39
\fBnanosleep\fP(2) 2.0
-\fBnfsservctl\fP(2) 2.2
-\fBnice\fP(2)
-\fBoldfstat\fP(2)
-\fBoldlstat\fP(2)
-\fBoldolduname\fP(2)
-\fBoldstat\fP(2)
-\fBolduname\fP(2)
-\fBopen\fP(2)
+\fBnfsservctl\fP(2) 2.2 Removed in 3.1
+\fBnice\fP(2) 1.0
+\fBoldfstat\fP(2) 1.0
+\fBoldlstat\fP(2) 1.0
+\fBoldolduname\fP(2) 1.0
+\fBoldstat\fP(2) 1.0
+\fBolduname\fP(2) 1.0
+\fBopen\fP(2) 1.0
+\fBopen_by_handle_at\fP(2) 2.6.39
\fBopenat\fP(2) 2.6.16
-\fBpause\fP(2)
-\fBpciconfig_iobase\fP(2) 2.2.15; 2.4 Not on i386
-.\" Alpha, PowerPC, ARM; not i386
-\fBpciconfig_read\fP(2) 2.0.26; 2.2 Not on i386
-.\" , PowerPC, ARM; not i386
-\fBpciconfig_write\fP(2) 2.0.26; 2.2 Not on i386
-.\" , PowerPC, ARM; not i386
+\fBpause\fP(2) 1.0
+\fBpciconfig_iobase\fP(2) 2.2.15; 2.4 Not on x86
+.\" Alpha, PowerPC, ARM; not x86
+\fBpciconfig_read\fP(2) 2.0.26; 2.2 Not on x86
+.\" , PowerPC, ARM; not x86
+\fBpciconfig_write\fP(2) 2.0.26; 2.2 Not on x86
+.\" , PowerPC, ARM; not x86
+\fBperf_event_open\fP(2) 2.6.31 T{
+Was called perf_counter_open()
+.br
+in 2.6.31; renamed in 2.6.32
+T}
\fBpersonality\fP(2) 1.2
-.\" \fBperfctr\fP(2) ??? Sparc32, Sparc64
-.\" \fBperfmonctl\fP(2) ??? ia64
-\fBphys\fP(2) Not implemented
-.\" Unimplemented (no slot since 2.1.116)
-\fBpipe\fP(2)
+\fBperfctr\fP(2) 2.2 Sparc; removed in 2.6.34
+.\" commit c7d5a0050773e98d1094eaa9f2a1a793fafac300 removed perfctr()
+\fBperfmonctl\fP(2) 2.4 ia64
+\fBpipe\fP(2) 1.0
\fBpipe2\fP(2) 2.6.27
\fBpivot_root\fP(2) 2.4
-\fBpoll\fP(2) 2.2
+\fBpoll\fP(2) 2.0.36; 2.2
+\fBppc_rtas\fP(2) PowerPC only
\fBppoll\fP(2) 2.6.16
\fBprctl\fP(2) 2.2
-\fBpread64\fP(2) Added as "pread" in 2.2;
- renamed "pread64" in 2.6
+\fBpread64\fP(2) T{
+Added as "pread" in 2.2;
+.br
+renamed "pread64" in 2.6
+T}
\fBpreadv\fP(2) 2.6.30
-\fBprof\fP(2) Not implemented
-\fBprofil\fP(2) Not implemented
-.\" Implemented in glibc; see \fBprofil\fP(3)
+\fBprlimit\fP(2) 2.6.36
+\fBprocess_vm_readv\fP(2) 3.2
+\fBprocess_vm_writev\fP(2) 3.2
\fBpselect6\fP(2) 2.6.16
.\" Implements \fBpselect\fP(2)
-\fBptrace\fP(2)
-\fBputpmsg\fP(2) Not implemented
-.\" Reserved for STREAMS support
-\fBpwrite64\fP(2) Added as "pwrite" in 2.2;
- renamed "pwrite64" in 2.6
+\fBptrace\fP(2) 1.0
+\fBpwrite64\fP(2) T{
+Added as "pwrite" in 2.2;
+.br
+renamed "pwrite64" in 2.6
+T}
\fBpwritev\fP(2) 2.6.30
-\fBquery_module\fP(2) 2.2
-\fBquotactl\fP(2)
-\fBread\fP(2)
+\fBquery_module\fP(2) 2.2 Removed in 2.6
+\fBquotactl\fP(2) 1.0
+\fBread\fP(2) 1.0
\fBreadahead\fP(2) 2.4.13
-\fBreaddir\fP(2)
+\fBreaddir\fP(2) 1.0
.\" Supersedes \fBgetdents\fP(2)
-\fBreadlink\fP(2)
+\fBreadlink\fP(2) 1.0
\fBreadlinkat\fP(2) 2.6.16
\fBreadv\fP(2) 2.0
-\fBreboot\fP(2)
-\fBrecv\fP(2)
-\fBrecvfrom\fP(2)
-\fBrecvmsg\fP(2)
+\fBreboot\fP(2) 1.0
+\fBrecv\fP(2) 2.0 See notes on \fBsocketcall\fP(2)
+\fBrecvfrom\fP(2) 2.0 See notes on \fBsocketcall\fP(2)
+\fBrecvmsg\fP(2) 2.0 See notes on \fBsocketcall\fP(2)
+\fBrecvmmsg\fP(2) 2.6.33
\fBremap_file_pages\fP(2) 2.6
\fBremovexattr\fP(2) 2.6; 2.4.18
-\fBrename\fP(2)
+\fBrename\fP(2) 1.0
\fBrenameat\fP(2) 2.6.16
\fBrequest_key\fP(2) 2.6.11
\fBrestart_syscall\fP(2) 2.6
-\fBrmdir\fP(2)
+\fBrmdir\fP(2) 1.0
\fBrt_sigaction\fP(2) 2.2
\fBrt_sigpending\fP(2) 2.2
\fBrt_sigprocmask\fP(2) 2.2
\fBrt_sigqueueinfo\fP(2) 2.2
-.\" Implements \fBsigqueue\fP(2)
\fBrt_sigreturn\fP(2) 2.2
\fBrt_sigsuspend\fP(2) 2.2
\fBrt_sigtimedwait\fP(2) 2.2
+\fBrt_tgsigqueueinfo\fP(2) 2.6.31
+\fBs390_runtime_instr\fP(2) 3.7 s390 only
\fBsched_get_priority_max\fP(2) 2.0
\fBsched_get_priority_min\fP(2) 2.0
\fBsched_getaffinity\fP(2) 2.6
+\fBsched_getattr\fP(2) 3.14
\fBsched_getparam\fP(2) 2.0
\fBsched_getscheduler\fP(2) 2.0
\fBsched_rr_get_interval\fP(2) 2.0
\fBsched_setaffinity\fP(2) 2.6
+\fBsched_setattr\fP(2) 3.14
\fBsched_setparam\fP(2) 2.0
\fBsched_setscheduler\fP(2) 2.0
\fBsched_yield\fP(2) 2.0
-\fBsecurity\fP(2) Not implemented
-\fBselect\fP(2)
-\fBsemctl\fP(2)
-\fBsemget\fP(2)
-\fBsemop\fP(2)
+\fBselect\fP(2) 1.0
+\fBsemctl\fP(2) 2.0 See notes on \fBipc\fP(2)
+\fBsemget\fP(2) 2.0 See notes on \fBipc\fP(2)
+\fBsemop\fP(2) 2.0 See notes on \fBipc\fP(2)
\fBsemtimedop\fP(2) 2.6; 2.4.22
-\fBsend\fP(2)
+\fBsend\fP(2) 2.0 See notes on \fBsocketcall\fP(2)
\fBsendfile\fP(2) 2.2
\fBsendfile64\fP(2) 2.6; 2.4.19
-\fBsendmsg\fP(2)
-\fBsendto\fP(2)
+\fBsendmmsg\fP(2) 3.0
+\fBsendmsg\fP(2) 2.0 See notes on \fBsocketcall\fP(2)
+\fBsendto\fP(2) 2.0 See notes on \fBsocketcall\fP(2)
\fBset_mempolicy\fP(2) 2.6.6
\fBset_robust_list\fP(2) 2.6.17
\fBset_thread_area\fP(2) 2.6
\fBset_tid_address\fP(2) 2.6
-\fBset_zone_reclaim\fP(2) 2.6.13 Removed in 2.6.16 (was never
- available to userspace)
.\" See http://lkml.org/lkml/2005/8/1/83
.\" "[PATCH] remove sys_set_zone_reclaim()"
-\fBsetdomainname\fP(2)
+\fBsetdomainname\fP(2) 1.0
\fBsetfsgid\fP(2) 1.2
\fBsetfsgid32\fP(2) 2.4
\fBsetfsuid\fP(2) 1.2
\fBsetfsuid32\fP(2) 2.4
-\fBsetgid\fP(2)
+\fBsetgid\fP(2) 1.0
\fBsetgid32\fP(2) 2.4
-\fBsetgroups\fP(2)
+\fBsetgroups\fP(2) 1.0
\fBsetgroups32\fP(2) 2.4
-\fBsethostname\fP(2)
-\fBsetitimer\fP(2)
-\fBsetpgid\fP(2)
-\fBsetpriority\fP(2)
-\fBsetregid\fP(2)
+\fBsethostname\fP(2) 1.0
+\fBsetitimer\fP(2) 1.0
+\fBsetns\fP(2) 3.0
+\fBsetpgid\fP(2) 1.0
+\fBsetpriority\fP(2) 1.0
+\fBsetregid\fP(2) 1.0
\fBsetregid32\fP(2) 2.4
\fBsetresgid\fP(2) 2.2
\fBsetresgid32\fP(2) 2.4
\fBsetresuid\fP(2) 2.2
\fBsetresuid32\fP(2) 2.4
-\fBsetreuid\fP(2)
+\fBsetreuid\fP(2) 1.0
\fBsetreuid32\fP(2) 2.4
-\fBsetrlimit\fP(2)
-\fBsetsid\fP(2)
-\fBsetsockopt\fP(2)
-\fBsettimeofday\fP(2)
-\fBsetuid\fP(2)
+\fBsetrlimit\fP(2) 1.0
+\fBsetsid\fP(2) 1.0
+\fBsetsockopt\fP(2) 2.0 See notes on \fBsocketcall\fP(2)
+\fBsettimeofday\fP(2) 1.0
+\fBsetuid\fP(2) 1.0
\fBsetuid32\fP(2) 2.4
\fBsetup\fP(2) Removed in 2.2
\fBsetxattr\fP(2) 2.6; 2.4.18
-\fBsgetmask\fP(2)
-\fBshmat\fP(2)
-\fBshmctl\fP(2)
-\fBshmdt\fP(2)
-\fBshmget\fP(2)
-\fBshutdown\fP(2)
-\fBsigaction\fP(2)
+\fBsgetmask\fP(2) 1.0
+\fBshmat\fP(2) 2.0 See notes on \fBipc\fP(2)
+\fBshmctl\fP(2) 2.0 See notes on \fBipc\fP(2)
+\fBshmdt\fP(2) 2.0 See notes on \fBipc\fP(2)
+\fBshmget\fP(2) 2.0 See notes on \fBipc\fP(2)
+\fBshutdown\fP(2) 2.0 See notes on \fBsocketcall\fP(2)
+\fBsigaction\fP(2) 1.0
\fBsigaltstack\fP(2) 2.2
-\fBsignal\fP(2)
+\fBsignal\fP(2) 1.0
\fBsignalfd\fP(2) 2.6.22
\fBsignalfd4\fP(2) 2.6.27
-\fBsigpending\fP(2)
-\fBsigprocmask\fP(2)
-\fBsigreturn\fP(2)
-\fBsigsuspend\fP(2)
-\fBsocket\fP(2)
-\fBsocketcall\fP(2)
+\fBsigpending\fP(2) 1.0
+\fBsigprocmask\fP(2) 1.0
+\fBsigreturn\fP(2) 1.0
+\fBsigsuspend\fP(2) 1.0
+\fBsocket\fP(2) 2.0 See notes on \fBsocketcall\fP(2)
+\fBsocketcall\fP(2) 1.0
.\" Implements BSD socket calls
-\fBsocketpair\fP(2)
+\fBsocketpair\fP(2) 2.0 See notes on \fBsocketcall\fP(2)
\fBsplice\fP(2) 2.6.17
\fBspu_create\fP(2) 2.6.16 PowerPC only
\fBspu_run\fP(2) 2.6.16 PowerPC only
-\fBssetmask\fP(2)
-\fBstat\fP(2)
+\fBssetmask\fP(2) 1.0
+\fBstat\fP(2) 1.0
\fBstat64\fP(2) 2.4
-\fBstatfs\fP(2)
+\fBstatfs\fP(2) 1.0
\fBstatfs64\fP(2) 2.6
-\fBstime\fP(2)
-\fBstty\fP(2) Not implemented
-\fBswapoff\fP(2)
-\fBswapon\fP(2)
-\fBsymlink\fP(2)
+\fBstime\fP(2) 1.0
+\fBsubpage_prot\fP(2) 2.6.25 PowerPC if
+ CONFIG_PPC_64K_PAGES
+\fBswapoff\fP(2) 1.0
+\fBswapon\fP(2) 1.0
+\fBsymlink\fP(2) 1.0
\fBsymlinkat\fP(2) 2.6.16
-\fBsync\fP(2)
+\fBsync\fP(2) 1.0
\fBsync_file_range\fP(2) 2.6.17
+\fBsync_file_range2\fP(2) 2.6.22 T{
+Architecture-specific
+variant of \fBsync_file_range\fP(2)
+T}
+.\" PowerPC, ARM, tile
+.\" First appeared on ARM, as arm_sync_file_range(), but later renamed
.\" \fBsys_debug_setcontext\fP(2) ??? PowerPC if CONFIG_PPC32
+\fBsyncfs\fP(2) 2.6.39
\fBsysfs\fP(2) 1.2
-\fBsysinfo\fP(2)
-\fBsyslog\fP(2)
+\fBsysinfo\fP(2) 1.0
+\fBsyslog\fP(2) 1.0
.\" glibc interface is \fBklogctl\fP(3)
\fBtee\fP(2) 2.6.17
\fBtgkill\fP(2) 2.6
-\fBtime\fP(2)
+\fBtime\fP(2) 1.0
\fBtimer_create\fP(2) 2.6
\fBtimer_delete\fP(2) 2.6
\fBtimer_getoverrun\fP(2) 2.6
\fBtimerfd_create\fP(2) 2.6.25
\fBtimerfd_gettime\fP(2) 2.6.25
\fBtimerfd_settime\fP(2) 2.6.25
-\fBtimes\fP(2)
+\fBtimes\fP(2) 1.0
\fBtkill\fP(2) 2.6; 2.4.22
-\fBtruncate\fP(2)
+\fBtruncate\fP(2) 1.0
\fBtruncate64\fP(2) 2.4
-\fBtuxcall\fP(2) Not implemented
-.\" Unimplemented; no slot on i386
-.\" As at 2.6.22, tuxcall has a slot on PowerPC, x86_64, and alpha
\fBugetrlimit\fP(2) 2.4
-\fBulimit\fP(2) Not implemented
-.\" Implemented in glibc; see \fBulimit\fP(3)
-\fBumask\fP(2)
-\fBumount\fP(2)
+\fBumask\fP(2) 1.0
+\fBumount\fP(2) 1.0
.\" sys_oldumount() -- __NR_umount
\fBumount2\fP(2) 2.2
.\" sys_umount() -- __NR_umount2
-\fBuname\fP(2)
-\fBunlink\fP(2)
+\fBuname\fP(2) 1.0
+\fBunlink\fP(2) 1.0
\fBunlinkat\fP(2) 2.6.16
\fBunshare\fP(2) 2.6.16
-\fBuselib\fP(2)
-\fBustat\fP(2)
-\fButime\fP(2)
+\fBuselib\fP(2) 1.0
+\fBustat\fP(2) 1.0
+\fButime\fP(2) 1.0
\fButimensat\fP(2) 2.6.22
-\fButimes\fP(2) 2.6
-\fBvfork\fP(2)
-\fBvhangup\fP(2)
-\fBvm86old\fP(2)
-.\" Superseded by \fBvm86\fP(2)
+\fButimes\fP(2) 2.2
+\fButrap_install\fP(2) 2.2 Sparc
+\fBvfork\fP(2) 2.2
+\fBvhangup\fP(2) 1.0
+\fBvm86old\fP(2) 1.0 T{
+Was "vm86"; renamed in
+2.0.28/2.2
+T}
+\fBvm86\fP(2) 2.0.28; 2.2
\fBvmsplice\fP(2) 2.6.17
-\fBvserver\fP(2) Not implemented
-\fBwait4\fP(2)
+\fBwait4\fP(2) 1.0
\fBwaitid\fP(2) 2.6.10
-\fBwaitpid\fP(2)
-\fBwrite\fP(2)
+\fBwaitpid\fP(2) 1.0
+\fBwrite\fP(2) 1.0
\fBwritev\fP(2) 2.0
.TE
+.ad
.PP
-On many platforms, including i386, socket calls are all multiplexed
+On many platforms, including x86-32, socket calls are all multiplexed
(via glibc wrapper functions) through
.BR socketcall (2)
and similarly System V IPC calls are multiplexed through
.BR ipc (2).
-.SH NOTES
-Note the following points:
-.IP * 3
+
Although slots are reserved for them in the system call table,
the following system calls are not implemented in the standard kernel:
.BR afs_syscall (2), \" __NR_afs_syscall is 53 on Linux 2.6.22/i386
.\" __NR_security is 223 on Linux 2.4/i386; absent on 2.6/i386, present
.\" on a couple of 2.6 architectures
.BR security (2), \" __NR_security is 223 on Linux 2.4/i386
+.\" The security call is for future use.
.BR stty (2), \" __NR_stty is 31 on Linux 2.6.22/i386
.BR tuxcall (2), \" __NR_tuxcall is 184 on x86_64, also on PPC and alpha
.BR ulimit (2), \" __NR_ulimit is 58 on Linux 2.6.22/i386
.BR umount (2);
.BR phys (2)
will never be implemented.
-.IP *
The
.BR getpmsg (2)
and
.BR putpmsg (2)
calls are for kernels patched to support STREAMS,
and may never be in the standard kernel.
-.\" The security call is for future use.
+
+There was briefly
+.BR set_zone_reclaim (2),
+added in Linux 2.6.13, and removed in 2.6.16;
+this system call was never available to user space.
+.SH NOTES
.PP
Roughly speaking, the code belonging to the system call
with number __NR_xxx defined in
.I /usr/include/asm/unistd.h
-can be found in the kernel source in the routine
+can be found in the Linux kernel source in the routine
.IR sys_xxx ().
(The dispatch table for i386 can be found in
.IR /usr/src/linux/arch/i386/kernel/entry.S .)
older system calls were superseded by newer ones,
and this has been treated somewhat unsystematically.
On platforms with
-proprietary OS emulation, such as parisc, sparc, sparc64 and alpha,
+proprietary operating-system emulation,
+such as parisc, sparc, sparc64, and alpha,
there are many additional system calls; mips64 also contains a full
set of 32-bit system calls.
.IR __NR_ugetrlimit ).
.IP *
Linux 2.4 increased the size of user and group IDs from 16 to 32 bits.
-.\" 64 bit off_t changes: ftruncate64, *stat64,
+.\" 64-bit off_t changes: ftruncate64, *stat64,
.\" fcntl64 (because of the flock structure), getdents64, *statfs64
To support this change, a range of system calls were added
(e.g.,
and
.BR mmap (2)
system calls use five or more arguments,
-which caused problems the way
+which caused problems in the way
argument passing on the i386 used to be set up.
Thus, while other architectures have
.IR sys_select ()
.\" and the semantics of the latter call were changed to what
.\" they are today.
.SH SEE ALSO
+.BR intro (2),
.BR syscall (2),
.BR unimplemented (2),
-.BR libc (7)
+.BR libc (7),
+.BR vdso (7)
+.SH COLOPHON
+This page is part of release 3.65 of the Linux
+.I man-pages
+project.
+A description of the project,
+and information about reporting bugs,
+can be found at
+\%http://www.kernel.org/doc/man\-pages/.
OSDN Git Service
