(2) - System calls

Intro: introduction to system calls, error numbers, privileges, large file support, threads, and lightweight processes
intro: introduction to system calls, error numbers, privileges, large file support, threads, and lightweight processes
access: determine accessibility of a file
acct: enable or disable process accounting
acl: manipulate a file's Access Control List (ACL)
aclipc: get or set an IPC object's ACL, return the number of ACL entries
adjtime: correct the time to allow synchronization of the system clock
alarm: set process alarm clock
auditbuf: get or set the audit buffer attributes
auditctl: get or set the status of auditing
auditdmp: write audit record to audit buffer
auditevt: get or set auditable events
auditlog: get or set audit log file attributes
brk, sbrk: change data segment space allocation
cg_bind: set a target CPU-Group for a process or its children
cg_current: obtain identifier for the current CPU-Group
cg_ids: return the CPU-Groups in the system
cg_info: get information about a CPU-Group
cg_memloc: determine physical location of memory pages
cg_processors: return the processors within a CPU-Group
chdir, fchdir: change working directory
chmod, fchmod: change mode of file
chown, lchown, fchown: change owner and group of a file
chroot: change root directory
close: close a file descriptor
creat64: create a new ordinary file or rewrite an existing one (supports large files)
creat, creat64: create a new file or rewrite an existing one
dup: duplicate an open file descriptor
errno: variable set by system calls on error
errno.h: system error numbers and names
exec: execl, execv, execle, execve, execlp, execvp: execute a file
exit, _exit, _Exit: terminate process
facl: manipulate a file's Access Control List (ACL)
fcntl: file control
filepriv: set, retrieve, or count the privileges associated with a file
fork1: create a new process to exec immediately
forkall: create a new process duplicating all threads and LWPs
fork, forkall, fork1: create a new process
fpathconf: get configurable pathname variables
fpathconf, pathconf: get configurable pathname variables
fstat: get status of an open file
fstat64: get status of an open file (supports large files)
fstatvfs: get file system information
fstatvfs64: get file system information (supports large files)
fsync: synchronize a file's in-memory state with that on the physical medium
ftruncate: set an open file to a specified length
ftruncate64: set an open file to a specified length (supports large files)
getcontext: get current user context
getdents: read directory entries and put in a file system independent format
getgroups, setgroups: get or set supplementary group access list IDs
getksym: get information for a global kernel symbol
getmsg: get next message off a stream
getmsg, getpmsg: get next message off a stream
getpid, getpgrp, getppid, getpgid: get process, process group, and parent process IDs
getpmsg: get next message off a stream
getrlimit: get maximum system resource consumption
getrlimit64: get maximum system resource consumption (supports large files)
getrlimit, getrlimit64, setrlimit, setrlimit64: control maximum system resource consumption
getsid: get session ID
gettimeofday: get date and time
gettimeofday, settimeofday: date and time functions
getuid, geteuid, getgid, getegid: get real user, effective user, real group, and effective group IDs
ioctl: control device
keyctl: sets and retrieves user and processor limits
kill: send a signal to a process or a group of processes
link: link to a file
lseek64: move read/write file pointer (supports large files)
lseek, lseek64: move read/write file pointer
lstat: get file or symbolic link status
lstat64: get file or symbolic link status (supports large files)
_lwp_cond_broadcast: broadcast a wake up to all LWPs waiting on a condition variable
_lwp_cond_signal: wake up a single LWP waiting on a condition variable
_lwp_cond_timedwait: wait on a condition variable for a limited time
_lwp_cond_wait: wait on a condition variable
_lwp_continue: continue LWP execution
_lwp_create: create a new LWP associated with the current process
_lwp_exit: terminate the calling LWP
_lwp_getprivate: get LWP-specific reference
_lwp_info: get time-accounting information of a single LWP
_lwp_kill: send a signal to a sibling lightweight process
_lwp_makecontext: make an LWP context
_lwp_mutex_lock: lock a mutex
_lwp_mutex_trylock: conditionally lock a mutex
_lwp_mutex_unlock: unlock a mutex
_lwp_self: get current LWP's identifier
_lwp_sema_init: initialize a semaphore
_lwp_sema_post: release a semaphore
_lwp_sema_trywait: conditionally acquire the semaphore
_lwp_sema_wait: acquire a semaphore
_lwp_setprivate: set LWP-specific reference
_lwp_suspend: suspend LWP execution
_lwp_wait: wait for termination of a sibling LWP
memcntl: memory management control
mincore: determine residency of memory pages
mkdir: make a directory
mknod: make a directory, or a special or ordinary file
mmap: map pages of memory
mmap64: map pages of memory (supports large files)
mmap, mmap64: map pages of memory
modload: load a loadable kernel module on demand
modpath: change loadable kernel modules search path
modstat: get information for loadable kernel modules
moduload: unload a loadable kernel module on demand
mount: mount a file system
mprotect: set protection of memory mapping
msgctl: message control operations
msgget: get message queue
msgop: msgsnd, msgrcv: message operations
munmap: unmap pages of memory
nice: change priority of a time-sharing process
open64: open for reading or writing (supports large files)
open, open64: open for reading or writing
pathconf: get configurable pathname variables
pause: suspend process until signal
pipe: create an interprocess channel
plock: lock into memory or unlock process, text, or data
poll: input/output multiplexing
p_online: take a processor online or offline or disable it
pread: atomic position and read
pread64: atomic position and read (supports large files)
pread, pread64: atomic position and read
priocntl: process scheduler control
priocntllist: generalized process scheduler control for a set of LWPs
priocntlset: generalized process scheduler control
processor_bind: bind or unbind to a processor
processor_exbind: exclusively bind or unbind a processor
processor_info: get information about a processor
procpriv: add, retrieve, remove, count, or put privileges associated with the calling process
profil: execution time profile
ptrace: process trace
putmsg: send a message on a stream
putmsg, putpmsg: send a message on a stream
putpmsg: send a message on a stream
pwrite: atomic position and write
pwrite64: atomic position and write (supports large files)
pwrite, pwrite64: atomic position and write
read: read from file
readlink: read the value of a symbolic link
read, readv: read from file
readv: read from file
rename: change the name of a file
rmdir: remove a directory
secadvise: get kernel advisory access information
semctl: semaphore control operations
semget: get set of semaphores
semop: semaphore operations
sendv: vectored write to a stream
sendv64: 64-bit vectored write to a stream
sendv, sendv64: vectored write to a stream
setcontext: set current user context
setpgid: set process group ID
setpgrp: set process group ID
setrlimit: set maximum system resource consumption
setrlimit64: set maximum system resource consumption (supports large files)
setsid: set session ID
settimeofday: set date and time
setuid, setgid: set user and group IDs
shmat: attach shared memory segment
shmctl: shared memory control operations
shmdt: detach shared memory segment
shmget: get shared memory segment identifier
shmop: shmat, shmdt: shared memory operations
sigaction: detailed signal management
sigaltstack: set or get signal alternate stack context
sighold: add signal to signal mass
sigignore: set signal disposition to SIG_IGN
signal, sigset, sighold, sigrelse, sigignore, sigpause: simplified signal management
sigpause: suspend process until signal is received
sigpending: examine signals that are blocked and pending
sigprocmask: change or examine signal mask
sigrelse: remove signal from signal mass
sigsend, sigsendset: send a signal to a process or a group of processes
sigset: modify signal dispositions
sigsuspend: install a signal mask and suspend process until signal
sigwait: wait for a signal to be posted
stat: get file status
stat64: get file status (supports large files)
stat, stat64, lstat, lstat64 fstat, fstat64: get file status
statvfs: get information about mounted filesystems
statvfs64: get information about mounted filesystems (supports large files)
statvfs, statvfs64, fstatvfs, fstatvfs64: get file system information
stime: set time
swapctl: manage swap space
symlink: make a symbolic link to a file
sync: update super block
sysfs: get file system type information
sysi86: machine-specific functions
sysinfo: get and set system information strings
time: get time
times: get process and child process times
truncate: set a file to a specified length
truncate64: set a file to a specified length (supports large files)
truncate, truncate64, ftruncate, ftruncate64: set a file to a specified length
uadmin: administrative control
ulimit: get and set user limits
umask: set and get file creation mask
umount: unmount a file system
uname: get name of current UNIX system
unlink: remove directory entry
ustat: get file system statistics
utime: set file access and modification times
vfork: spawn new process in a virtual memory efficient way
wait: wait for child process to stop or terminate
waitid: wait for child process to change state
waitpid: wait for child process to change state
write: write on a file
writev: set of writes on a file
write, writev: write on a file