FD_CLR(2), FD_COPY(2), FD_ISSET(2), FD_SET(2), FD_ZERO(2), select(2) | synchronous I/O multiplexing |
_exit(2) | terminate the calling process |
accept(2) | accept a connection on a socket |
access(2), faccessat(2) | check accessibility of a file |
acct(2) | enable or disable process accounting |
adjtime(2) | correct the time to allow synchronization of the system clock |
aio_cancel(2) | cancel an outstanding asynchronous I/O operation (REALTIME) |
aio_error(2) | retrieve error status of asynchronous I/O operation (REALTIME) |
aio_read(2) | asynchronous read from a file (REALTIME) |
aio_return(2) | retrieve return status of asynchronous I/O operation (REALTIME) |
aio_suspend(2) | suspend until asynchronous I/O operations or timeout complete (REALTIME) |
aio_write(2) | asynchronous write to a file (REALTIME) |
audit(2) | commit BSM audit record to audit log |
auditctl(2) | configure system audit parameters |
auditon(2) | configure system audit parameters |
bind(2) | bind a name to a socket |
brk(2), sbrk(2) | change data segment size |
chdir(2), fchdir(2) | change current working directory |
chflags(2), fchflags(2) | set file flags |
chmod(2), fchmod(2), fchmodat(2) | change mode of file |
chown(2), fchown(2), lchown(2), fchownat(2) | change owner and group of a file |
chroot(2) | change root directory |
clonefile(2) | create copy on write clones of files |
close(2) | delete a descriptor |
connect(2) | initiate a connection on a socket |
connectx(2) | initiate a connection on a socket |
creat(2) | create a new file |
disconnectx(2) | disconnects a connection on a socket |
dup(2), dup2(2) | duplicate an existing file descriptor |
exchangedata(2) | atomically exchange data between two files |
execve(2) | execute a file |
fcntl(2) | file control |
fhopen(2) | open a file by file handle |
fileport_makeport(2), fileport_makefd(2) | manipulate fileports |
flock(2) | apply or remove an advisory lock on an open file |
fork(2) | create a new process |
fpathconf(2), pathconf(2) | get configurable pathname variables |
fs_snapshot_create(2) | create read only snapshot of a mounted filesystem |
fsgetpath(2) | get the path associated with filesystem node identifier (inode number/link id/object id) |
fstat(2), fstat64(2), lstat(2), lstat64(2), stat(2), stat64(2), fstatat(2) | get file status |
fsync(2) | synchronize a file's in-core state with that on disk |
ftruncate(2), truncate(2) | truncate or extend a file to a specified length |
futimens(2), utimensat(2) | set file access and modification times |
futimes(2), utimes(2) | set file access and modification times |
getattrlist(2), fgetattrlist(2), getattrlistat(2) | get file system attributes |
getattrlistbulk(2) | get file system attributes for multiple directory entries |
getaudit_addr(2), getaudit(NOW DEPRECATED)(2) | retrieve audit session state |
getauid(2) | retrieve audit user ID |
getdirentries(2) | get directory entries in a filesystem independent format |
getdirentriesattr(2), getdirentriesattr(NOW DEPRECATED)(2) | get file system attributes for multiple directory entries |
getdtablesize(2) | get descriptor table size |
getegid(2), getgid(2) | get group process identification |
getentropy(2) | get entropy |
geteuid(2), getuid(2) | get user identification |
getfh(2) | get file handle |
getfsstat(2) | get list of all mounted file systems |
getgroups(2) | get group access list |
gethostuuid(2) | return a unique identifier for the current machine |
getitimer(2), setitimer(2) | get/set value of interval timer |
getlogin(2), setlogin(2) | get/set login name |
getpeername(2) | get address of connected peer |
getpgid(2), getpgrp(2) | get process group |
getpid(2), getppid(2) | get parent or calling process identification |
getpriority(2), setpriority(2) | get/set program scheduling priority |
getrlimit(2), setrlimit(2) | control maximum system resource consumption |
getrusage(2) | get information about resource utilization |
getsid(2) | get process session |
getsockname(2) | get socket name |
getsockopt(2), setsockopt(2) | get and set options on sockets |
gettimeofday(2), settimeofday(2) | get/set date and time |
getxattr(2), fgetxattr(2) | get an extended attribute value |
i386_get_ldt(2), i386_set_ldt(2) | manage i386 per-process Local Descriptor Table entries |
intro(2) | introduction to system calls and error numbers |
ioctl(2) | control device |
issetugid(2) | is current process tainted by uid or gid changes |
kill(2) | send signal to a process |
killpg(2) | send signal to a process group |
kqueue(2), kevent(2), kevent64(2) | and kevent_qos kernel event notification mechanism |
link(2), linkat(2) | make a hard file link |
listen(2) | listen for connections on a socket |
listxattr(2), flistxattr(2) | list extended attribute names |
lseek(2) | reposition read/write file offset |
madvise(2), posix_madvise(2) | give advice about use of memory |
mincore(2) | determine residency of memory pages |
minherit(2) | control the inheritance of pages |
mkdir(2), mkdirat(2) | make a directory file |
mkfifo(2), mkfifoat(2) | make a fifo file |
mknod(2), mknodat(2) | make a special file node |
mlock(2), munlock(2) | lock (unlock) physical pages in memory |
mmap(2) | allocate memory, or map files or devices into memory |
mount(2), fmount(2), unmount(2) | mount or dismount a filesystem |
mprotect(2) | control the protection of pages |
msync(2) | synchronize a mapped region |
munmap(2) | remove a mapping |
nanosleep(2) | suspend thread execution for an interval measured in nanoseconds |
nfsclnt(2) | NFS client services |
nfssvc(2) | NFS services |
open(2), openat(2) | open or create a file for reading or writing |
pipe(2) | create descriptor pair for interprocess communication |
poll(2) | synchronous I/O multiplexing |
posix_spawn(2), posix_spawn posix_spawnp(2) | spawn a process |
pread(2), read(2), preadv(2), readv(2) | read input |
pselect(2) | synchronous I/O multiplexing a la POSIX.1g |
pthread_kill(2) | send a signal to a specified thread |
pthread_setugid_np(2) | Set the per-thread userid and single groupid |
pthread_sigmask(2) | examine and/or change a thread's signal mask |
ptrace(2) | process tracing and debugging |
pwrite(2), write(2), pwritev(2), writev(2) | write output |
quotactl(2) | manipulate filesystem quotas |
readlink(2), readlinkat(2), freadlink(2) | read value of a symbolic link |
reboot(2) | reboot system or halt processor |
recv(2), recvfrom(2), recvmsg(2) | receive a message from a socket |
removexattr(2), fremovexattr(2) | remove an extended attribute value |
rename(2), renameat(2), renamex_np(2), renameatx_np(2) | change the name of a file |
revoke(2) | revoke file access |
rmdir(2) | remove a directory file |
searchfs(2) | search a volume quickly |
sem_close(2) | close a named semaphore |
sem_open(2) | initialize and open a named semaphore |
sem_post(2) | unlock a semaphore |
sem_trywait(2), sem_wait(2) | lock a semaphore |
sem_unlink(2) | remove a named semaphore |
semctl(2) | control operations on a semaphore set |
semget(2) | obtain a semaphore id |
semop(2) | atomic array of operations on a semaphore set |
send(2), sendmsg(2), sendto(2) | send a message from a socket |
sendfile(2) | send a file to a socket |
setattrlist(2), fsetattrlist(2), setattrlistat(2) | set file system attributes |
setaudit_addr(2), setaudit(NOW DEPRECATED)(2) | set audit session state |
setauid(2) | set audit indentifier |
setegid(2), seteuid(2), setgid(2), setuid(2) | set user and group ID |
setgroups(2) | set group access list |
setpgid(2), setpgrp(2) | set process group |
setregid(2) | set real and effective group ID |
setreuid(2) | set real and effective user IDs |
setsid(2) | create session and set process group ID |
setxattr(2), fsetxattr(2) | set an extended attribute value |
shm_open(2) | open a shared memory object |
shm_unlink(2) | remove shared memory object |
shmat(2), shmdt(2) | map/unmap shared memory |
shmctl(2) | shared memory control operations |
shmget(2) | get shared memory area identifier |
shutdown(2) | shut down part of a full-duplex connection |
sigaction(2) | software signal facilities |
sigaltstack(2) | set and/or get signal stack context |
sigblock(2) | block signals |
sigpause(2) | atomically release blocked signals and wait for interrupt |
sigpending(2) | get pending signals |
sigprocmask(2) | manipulate current signal mask |
sigsetmask(2) | set current signal mask |
sigstack(2) | set and/or get signal stack context |
sigsuspend(2) | atomically release blocked signals and wait for interrupt |
sigvec(2) | software signal facilities |
sigwait(2) | select a set of signals |
socket(2) | create an endpoint for communication |
socketpair(2) | create a pair of connected sockets |
statfs(2), statfs64(2), fstatfs(2), fstatfs64(2) | get file system statistics |
symlink(2), symlinkat(2) | make symbolic link to a file |
sync(2) | synchronize disk block in-core status with that on disk |
umask(2) | set file creation mode mask |
undelete(2) | attempt to recover a deleted file |
unlink(2), unlinkat(2) | remove directory entry |
vfork(2) | deprecated system call to create a new process |
wait(2), wait3(2), wait4(2), waitpid(2) | wait for process termination |