Part III Section 2: System Calls

Table of Contents

Introduction

intro(2) - introduction to system calls

Symbols

__pset_rtctl(2) - real-time processor set control

_Exit(2) - terminate a process — see exit(2)

_exit(2) - terminate a process — see exit(2)

A

accept(2) - accept a connection on a socket

access(2) - determine accessibility of a file

acct(2) - enable or disable process accounting

acl(2) - set a file's Access Control List (ACL) information; JFS File Systems only

adjtime(2) - correct the time to synchronize the system clock

aio_cancel(2) - cancel an asynchronous I/O operation

aio_error(2) - return error status of an asynchronous I/O operation

aio_fsync(2) - force outstanding asynchronous operations on a file to the synchronized state

aio_read(2) - start an asynchronous read operation

aio_reap(2) - wait for multiple asynchronous I/O requests

aio_return(2) - return status of an asynchronous I/O operation

aio_suspend(2) - wait for an asynchronous I/O operation to complete

aio_write(2) - start asynchronous write operation

alarm(2) - set a process's alarm clock

audctl(2) - start or halt the auditing system and set or get audit files

audswitch(2) - suspend or resume auditing on the current process

audwrite(2) - write an audit record for a self-auditing process

B

bind(2) - bind an address to a socket

brk(2) - change data segment space allocation

C

chdir(2) - change working directory

chmod(2) - change file mode access permissions

chown(2) - change owner and group of a file

chroot(2) - change root directory

clock_getres(2) - clock operations — see clocks(2)

clock_gettime(2) - clock operations — see clocks(2)

clock_settime(2) - clock operations — see clocks(2)

clocks(2) - clock operations

close(2) - close a file descriptor

connect(2) - initiate a connection on a socket

coreadm(2) - application core file administration

CPU_IS_PA_RISC(2) - get configurable system variables — see sysconf(2)

cpu_is_pa_risc(2) - get configurable system variables — see sysconf(2)

crashconf(2) - configure system crash dumps

creat(2) - create a new file or rewrite an existing one

creat64(2) - non-POSIX standard API interfaces to support large files

D

dup(2) - duplicate an open file descriptor

dup2(2) - duplicate an open file descriptor to a specific slot

E

errno(2) - error indicator for function calls

exec(2) - execute a file

execl(2) - execute a file — see exec(2)

execle(2) - execute a file — see exec(2)

execlp(2) - execute a file — see exec(2)

execv(2) - execute a file — see exec(2)

execve(2) - execute a file — see exec(2)

execvp(2) - execute a file — see exec(2)

exit(2) - terminate a process

F

fadvise(2) - file advisory information

fchdir(2) - change working directory — see chdir(2)

fchmod(2) - change file mode access permissions — see chmod(2)

fchown(2) - change owner and group of a file — see chown(2)

fcntl(2) - file control

FD_CLR(2) - synchronous I/O multiplexing — see select(2)

FD_ISSET(2) - synchronous I/O multiplexing — see select(2)

FD_SET(2) - synchronous I/O multiplexing — see select(2)

FD_ZERO(2) - synchronous I/O multiplexing — see select(2)

fdatasync(2) - synchronize a file's in-core and on-disk states — see fsync(2)

fgetacl(2) - get access control list (ACL) information (HFS File Systems only) — see getacl(2)

flock(2) - apply or remove an advisory or enforced lock on an open file

fork(2) - create a new process

fpathconf(2) - get configurable path name variables — see pathconf(2)

fsctl(2) - file system control

fsetacl(2) - set access control list (ACL) information — see setacl(2)

fstat(2) - get file status

fstat64(2) - non-POSIX standard API interfaces to support large files — see creat64(2)

fstatfs(2) - get file system statistics — see statfs(2)

fstatvfs(2) - get file system information — see statvfs(2)

fstatvfs64(2) - non-POSIX standard API interfaces to support large files — see creat64(2)

fsync(2) - synchronize a file's in-core and on-disk states

ftime(2) - get date and time more precisely

ftruncate(2) - truncate a file to a specified length — see truncate(2)

ftruncate64(2) - non-POSIX standard API interfaces to support large files — see creat64(2)

G

getaccess(2) - get a user's effective access rights to a file

getacl(2) - get access control list (ACL) information (HFS File Systems only)

getaudid(2) - get the audit ID (aid) for the current process

getaudproc(2) - get the audit process flag for the calling process

getcontext(2) - get and set current user context; DEPRECATED

getdirentries(2) - get entries from a directory in a file-system-independent format

getdomainname(2) - get or set name of current Network Information Service domain

getdtablesize(2) - get the size of the per-process file descriptor table

getegid(2) - get real user, effective user, real group, and effective group IDs — see getuid(2)

geteuid(2) - get real user, effective user, real group, and effective group IDs — see getuid(2)

getevent(2) - get events and system calls that are currently being audited

getfh(2) - return file handle for file on remote node

getgid(2) - get real user, effective user, real group, and effective group IDs — see getuid(2)

getgroups(2) - get group access list

gethostid(2) - get an identifier for the current host

gethostname(2) - get name of current host system

getitimer(2) - get and set value of interval timer

getksym(2) - get information for local and global kernel symbols

getmsg(2) - receive next message from a STREAMS file

getpagesize(2) - get the current page size

getpeername(2) - get address of connected peer

getpgid(2) - get process, process group and parent process ID. — see getpid(2)

getpgrp(2) - get process, process group and parent process ID. — see getpid(2)

getpgrp2(2) - get process, process group and parent process ID. — see getpid(2)

getpid(2) - get process, process group and parent process ID.

getpmsg(2) - receive next message from a STREAMS file — see getmsg(2)

getppid(2) - get process, process group and parent process ID. — see getpid(2)

getpriority(2) - get or set process priority

getprivgrp(2) - get and set special attributes for group

getrlimit(2) - control maximum resource consumption

getrlimit64(2) - non-POSIX standard API interfaces to support large files — see creat64(2)

getrusage(2) - get information about resource utilization

getsid(2) - get session ID

getsockname(2) - get socket address

getsockopt(2) - get and set options on sockets

gettimeofday(2) - get the date and time

gettune(2) - get the value of a kernel tunable parameter

getuid(2) - get real user, effective user, real group, and effective group IDs

gtty(2) - control terminal device (Bell Version 6 compatibility) — see stty(2)

I

ioctl(2) - control device

iscomsec(2) - check if system has been converted to a trusted system

K

kill(2) - send a signal to a process or a group of processes

killpg(2) - 4.2 BSD-compatible process control facilities

L

lchown(2) - change owner and group of a file — see chown(2)

link(2) - link to a file

lio_listio(2) - start a list of asynchronous I/O operations

listen(2) - listen for connections on a socket

lockf(2) - provide semaphores and record locking on files

lockf64(2) - non-POSIX standard API interfaces to support large files — see creat64(2)

lseek(2) - move read/write file pointer; seek

lseek64(2) - non-POSIX standard API interfaces to support large files — see creat64(2)

lstat(2) - get symbolic link status

lstat64(2) - non-POSIX standard API interfaces to support large files — see creat64(2)

lsync(2) - update disk — see sync(2)

M

madvise(2) - advise the system of a process's expected paging behavior

makecontext(2) - manipulate user contexts; DEPRECATED

memcntl(2) - memory management control

mkdir(2) - make a directory file

mknod(2) - make a directory, special, or ordinary file

mlock(2) - lock a segment of the process virtual address space in memory

mlockall(2) - lock a process virtual address space in memory

mmap(2) - map pages of memory

mmap64(2) - non-POSIX standard API interfaces to support large files — see creat64(2)

modload(2) - load kernel modules on demand

modpath(2) - change global search path for dynamically loadable kernel modules

modstat(2) - get information for a dynamically loaded kernel module

moduload(2) - unload a kernel module on demand

mount(2) - mount a file system

mpctl(2) - multiprocessor control

mprotect(2) - set or check protection of memory mapping

mq_close(2) - close a message queue descriptor

mq_getattr(2) - get status information and attributes associated with a message queue

mq_notify(2) - register or cancel a notification request with a message queue

mq_open(2) - create or open a message queue

mq_receive(2) - receive a message from a message queue

mq_send(2) - send a message to a message queue

mq_setattr(2) - set the blocking status of a message queue associated with a descriptor

mq_unlink(2) - unlink a message queue

msem_init(2) - initialize a semaphore in a mapped file or anonymous memory region

msem_lock(2) - lock a semaphore

msem_remove(2) - remove a semaphore in mapped file or anonymous region

msem_unlock(2) - unlock a semaphore

msgctl(2) - message control operations

msgget(2) - get message queue

msgop(2) - message operations

msgrcv(2) - message operations — see msgop(2)

msgsnd(2) - message operations — see msgop(2)

msync(2) - synchronize the memory of a mapped file with physical storage

munlock(2) - unlock a segment of the process virtual address space

munlockall(2) - unlock the entire virtual address space of a process

munmap(2) - unmap pages of memory

mvalid(2) - check memory region for validity

N

nanosleep(2) - high resolution sleep

nice(2) - change priority of a process

O

open(2) - open file for reading or writing

open64(2) - non-POSIX standard API interfaces to support large files — see creat64(2)

P

pathconf(2) - get configurable path name variables

pause(2) - suspend process until signal

pipe(2) - create an interprocess channel

plock(2) - lock process, text, data, stack, or shared library in memory

poll(2) - monitor I/O conditions on multiple file descriptors

posix_fadvise(2) - file advisory information

posix_fadvise64(2) - file advisory information — see posix_fadvise(2)

postwait(2) - lightweight synchronization mechanism

pread(2) - read from file — see read(2)

pread64(2) - non-POSIX standard API interfaces to support large files — see creat64(2)

prealloc(2) - preallocate fast disk storage

prealloc64(2) - non-POSIX standard API interfaces to support large files — see creat64(2)

pri_hpux_to(2) - real-time scheduling operations — see rtsched(2)

PRI_HPUX_TO_POSIX(2) - real-time scheduling operations — see rtsched(2)

pri_hpux_to_posix(2) - real-time scheduling operations — see rtsched(2)

pri_posix_t(2) - real-time scheduling operations — see rtsched(2)

PRI_POSIX_TO_HPUX(2) - real-time scheduling operations — see rtsched(2)

pri_posix_to_hpux(2) - real-time scheduling operations — see rtsched(2)

profil(2) - execution time profile

pselect(2) - synchronous I/O multiplexing — see select(2)

pset_assign(2) - change processor set assignment

pset_bind(2) - bind process or thread to a processor set

pset_create(2) - create a processor set

pset_ctl(2) - processor set control

pset_destroy(2) - destroy a processor set

pset_getattr(2) - manage processor set attributes

pset_setattr(2) - manage processor set attributes — see pset_getattr(2)

pstat(2) - an infrastructure for obtaining information from the kernel

pstat_getcommandline(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getcrashdev(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getcrashinfo(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getdisk(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getdynamic(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getfile2(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getfiledetails(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getio(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getipc(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getlocality(2) - returns system-wide or per-process information of a ccNUMA system

pstat_getlv(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getlwp(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getmpathname(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getmsg(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getnode(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getpathname(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getpmq(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getproc(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getprocessor(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getproclocality(2) - returns system-wide or per-process information of a ccNUMA system — see pstat_getlocality(2)

pstat_getprocvm(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getpsem(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getpset(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getsem(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getshm(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getsocket(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getstable(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getstatic(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getstream(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getswap(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

pstat_getvminfo(2) - an infrastructure for obtaining information from the kernel — see pstat(2)

putmsg(2) - send a message on a stream

putpmsg(2) - send a message on a stream — see putmsg(2)

pw_getukid(2) - lightweight synchronization mechanism — see postwait(2)

pw_getvmax(2) - lightweight synchronization mechanism — see postwait(2)

pw_post(2) - lightweight synchronization mechanism — see postwait(2)

pw_postv(2) - lightweight synchronization mechanism — see postwait(2)

pw_wait(2) - lightweight synchronization mechanism — see postwait(2)

pwrite(2) - write on a file — see write(2)

pwrite64(2) - non-POSIX standard API interfaces to support large files — see creat64(2)

Q

quotactl(2) - manipulate disk quotas

R

raise(2) - send a signal to a process or a group of processes — see kill(2)

read(2) - read from file

readlink(2) - read the contents of a symbolic link

readv(2) - read from file — see read(2)

reboot(2) - boot the system

recv(2) - receive a message from a socket

recvfrom(2) - receive a message from a socket — see recv(2)

recvmsg(2) - receive a message from a socket — see recv(2)

rename(2) - change the name of a file

rmdir(2) - remove a directory file

rtprio(2) - change or read real-time priority

rtsched(2) - real-time scheduling operations

S

sbrk(2) - change data segment space allocation — see brk(2)

sched_get_priority_max(2) - real-time scheduling operations — see rtsched(2)

sched_get_priority_min(2) - real-time scheduling operations — see rtsched(2)

sched_getparam(2) - real-time scheduling operations — see rtsched(2)

sched_getscheduler(2) - real-time scheduling operations — see rtsched(2)

sched_rr_get_interval(2) - real-time scheduling operations — see rtsched(2)

sched_setparam(2) - real-time scheduling operations — see rtsched(2)

sched_setscheduler(2) - real-time scheduling operations — see rtsched(2)

sched_yield(2) - real-time scheduling operations — see rtsched(2)

select(2) - synchronous I/O multiplexing

sem_close(2) - close a named POSIX semaphore

sem_destroy(2) - destroy an unnamed POSIX semaphore

sem_getvalue(2) - get the value of a POSIX semaphore

sem_init(2) - initialize an unnamed POSIX semaphore

sem_open(2) - create/open a named POSIX semaphore

sem_post(2) - unlock a POSIX semaphore

sem_trywait(2) - lock a POSIX semaphore — see sem_wait(2)

sem_unlink(2) - unlink a named POSIX semaphore

sem_wait(2) - lock a POSIX semaphore

semctl(2) - semaphore control operations

semget(2) - get set of semaphores

semop(2) - semaphore operations

semtimedop(2) - semaphore operations — see semop(2)

send(2) - send a message from a socket

sendfile(2) - send the contents of a file through a socket

sendfile64(2) - send the contents of a Large File through a socket

sendmsg(2) - send a message from a socket — see send(2)

sendto(2) - send a message from a socket — see send(2)

serialize(2) - force target process to run serially with other processes

setacl(2) - set access control list (ACL) information

setaudid(2) - set the audit ID (aid) for the current process

setaudproc(2) - controls process level auditing for the current process and its decendents

setcontext(2) - get and set current user context; DEPRECATED — see getcontext(2)

setdomainname(2) - get or set name of current Network Information Service domain — see getdomainname(2)

setegid(2) - set effective user and group IDs — see seteuid(2)

seteuid(2) - set effective user and group IDs

setevent(2) - set current events and system calls which are to be audited

setgid(2) - set user and group IDs — see setuid(2)

setgroups(2) - set group access list

sethostname(2) - set name of current host system

setitimer(2) - get and set value of interval timer — see getitimer(2)

setpgid(2) - set process group ID for job control

setpgrp(2) - set process group ID

setpgrp2(2) - set process group ID for job control — see setpgid(2)

setpgrp3(2) - create session and set process group ID; for HP-UX 9.x compatibility.

setpriority(2) - get or set process priority — see getpriority(2)

setprivgrp(2) - get and set special attributes for group — see getprivgrp(2)

setregid(2) - sets the real and effective group IDs

setresgid(2) - set real, effective, and saved user and group IDs — see setresuid(2)

setresuid(2) - set real, effective, and saved user and group IDs

setreuid(2) - set real and effective user IDs

setrlimit(2) - control maximum resource consumption — see getrlimit(2)

setrlimit64(2) - non-POSIX standard API interfaces to support large files — see creat64(2)

setsid(2) - create session and set process group ID

setsockopt(2) - get and set options on sockets — see getsockopt(2)

settimeofday(2) - set the date and time

settune(2) - set the value of a kernel tunable parameter

settune_txn(2) - sets the values of kernel tunable parameters in a transaction

setuid(2) - set user and group IDs

setuname(2) - get information about computer system; set node name (system name) — see uname(2)

shm_open(2) - create/open a shared memory object

shm_unlink(2) - unlink a shared memory object

shmat(2) - shared memory operations — see shmop(2)

shmctl(2) - shared memory control operations

shmdt(2) - shared memory operations — see shmop(2)

shmget(2) - get shared memory segment

shmop(2) - shared memory operations

shutdown(2) - shut down a socket

sigaction(2) - examine and change signal action

sigaltstack(2) - set and/or get signal alternate stack context.

siginterrupt(2) - allow signals to interrupt functions

signal(2) - signal management

sigpending(2) - examine pending signals

sigprocmask(2) - examine and change blocked signals

sigqueue(2) - queue a signal to a process

sigsend(2) - send a signal to a process or a group of processes

sigsendset(2) - send a signal to a process or a group of processes — see sigsend(2)

sigspace(2) - assure sufficient signal stack space

sigsuspend(2) - wait for a signal

sigtimedwait(2) - synchronously accept a signal — see sigwait(2)

sigvec(2) - 4.2 BSD-compatible process control facilities — see killpg(2)

sigwait(2) - synchronously accept a signal

sigwaitinfo(2) - synchronously accept a signal — see sigwait(2)

socket(2) - create an endpoint for communication

socketpair(2) - create a pair of connected sockets

sprofil(2) - execution time profile for disjointed text spaces

stat(2) - get file status

stat64(2) - non-POSIX standard API interfaces to support large files — see creat64(2)

statfs(2) - get file system statistics

statvfs(2) - get file system information

statvfs64(2) - non-POSIX standard API interfaces to support large files — see creat64(2)

stime(2) - set time and date

stream(2) - STREAMS enhancements to standard system calls

stty(2) - control terminal device (Bell Version 6 compatibility)

swapcontext(2) - manipulate user contexts; DEPRECATED — see makecontext(2)

swapctl(2) - manage and configure system swap space

swapon(2) - add swap space for interleaved paging and swapping

symlink(2) - make symbolic link to a file

sync(2) - update disk

sysconf(2) - get configurable system variables

sysfs(2) - get file system type information

T

time(2) - get time

timer_create(2) - timer operations — see timers(2)

timer_delete(2) - timer operations — see timers(2)

timer_getoverrun(2) - timer operations — see timers(2)

timer_gettime(2) - timer operations — see timers(2)

timer_settime(2) - timer operations — see timers(2)

timers(2) - timer operations

times(2) - get process and child process times

truncate(2) - truncate a file to a specified length

truncate64(2) - non-POSIX standard API interfaces to support large files — see creat64(2)

ttrace(2) - tracing facility for multithreaded processes

ttrace_wait(2) - wait for ttrace event

tuneinfo2(2) - retrieve detailed information about kernel tunable parameters

U

ualarm(2) - set the interval timer

ulimit(2) - get and set user limits

umask(2) - set and get file creation mask

umount(2) - unmount a file system

umount2(2) - unmount a file system — see umount(2)

uname(2) - get information about computer system; set node name (system name)

unlink(2) - remove directory entry; delete file

usleep(2) - suspend execution for an interval

ustat(2) - get mounted file system statistics

utime(2) - set file access and modification times

utimes(2) - set file access and modification times

V

vfork(2) - spawn new process; share virtual memory

vfsmount(2) - mount a file system

W

wait(2) - wait for child process to stop or terminate

wait3(2) - wait for child process to change state

wait4(2) - wait for child process to change state — see wait3(2)

waitid(2) - wait for child process to change state

waitpid(2) - wait for child process to stop or terminate — see wait(2)

write(2) - write on a file

writev(2) - write on a file — see write(2)