section 2freebsd · System calls 📞

#

• __syscall(2freebsd)indirect system call✨
• _exit(2freebsd)terminate the calling process✨
• _umtx_op(2freebsd)interface for implementation of userspace threading synchronization primitives✨

A

• abort2(2freebsd)abort process with diagnostics✨
• accept(2freebsd)accept a connection on a socket✨
• accept4(2freebsd)accept a connection on a socket✨
• access(2freebsd)check accessibility of a file✨
• acct(2freebsd)enable or disable process accounting✨
• adjtime(2freebsd)correct the time to allow synchronization of the system clock✨
• aio_cancel(2freebsd)cancel an outstanding asynchronous I/O operation (REALTIME)✨
• aio_error(2freebsd)retrieve error status of asynchronous I/O operation (REALTIME)✨
• aio_fsync(2freebsd)asynchronous file synchronization (REALTIME)✨
• aio_mlock(2freebsd)asynchronous mlock(2) operation✨
• aio_read(2freebsd)asynchronous read from a file (REALTIME)✨
• aio_return(2freebsd)retrieve return status of asynchronous I/O operation (REALTIME)✨
• aio_suspend(2freebsd)suspend until asynchronous I/O operations or timeout complete (REALTIME)✨
• aio_waitcomplete(2freebsd)wait for the next completion of an aio request✨
• aio_write(2freebsd)asynchronous write to a file (REALTIME)✨
• audit(2freebsd)commit BSM audit record to audit log✨
• auditctl(2freebsd)configure system audit parameters✨
• auditon(2freebsd)configure system audit parameters✨

B

• bind(2freebsd)assign a local protocol address to a socket✨
• bindat(2freebsd)assign a local protocol address to a socket✨
• brk(2freebsd)change data segment size✨

C

• cap_enter(2freebsd)Capability mode system calls✨
• cap_fcntls_get(2freebsd)manage allowed fcntl commands✨
• cap_fcntls_limit(2freebsd)manage allowed fcntl commands✨
• cap_getmode(2freebsd)Capability mode system calls✨
• cap_ioctls_get(2freebsd)manage allowed ioctl commands✨
• cap_ioctls_limit(2freebsd)manage allowed ioctl commands✨
• cap_rights_limit(2freebsd)limit capability rights✨
• chdir(2freebsd)change current working directory✨
• chflags(2freebsd)set file flags✨
• chflagsat(2freebsd)set file flags✨
• chmod(2freebsd)change mode of file✨
• chown(2freebsd)change owner and group of a file✨
• chroot(2freebsd)change root directory✨
• clock_getres(2freebsd)get/set/calibrate date and time✨
• clock_gettime(2freebsd)get/set/calibrate date and time✨
• clock_nanosleep(2freebsd)high resolution sleep✨
• clock_settime(2freebsd)get/set/calibrate date and time✨
• close(2freebsd)delete a descriptor✨
• close_range(2freebsd)delete open file descriptors✨
• closefrom(2freebsd)delete open file descriptors✨
• connect(2freebsd)initiate a connection on a socket✨
• connectat(2freebsd)initiate a connection on a socket✨
• cpuset(2freebsd)manage CPU affinity sets✨
• cpuset_getaffinity(2freebsd)manage CPU affinity✨
• cpuset_getdomain(2freebsd)manage memory domain policy✨
• cpuset_getid(2freebsd)manage CPU affinity sets✨
• cpuset_setaffinity(2freebsd)manage CPU affinity✨
• cpuset_setdomain(2freebsd)manage memory domain policy✨
• cpuset_setid(2freebsd)manage CPU affinity sets✨
• creat(2freebsd)create a new file✨

D

• dup(2freebsd)duplicate an existing file descriptor✨
• dup2(2freebsd)duplicate an existing file descriptor✨

E

• eaccess(2freebsd)check accessibility of a file✨
• errno(2freebsd)introduction to system calls and error numbers✨
• execve(2freebsd)execute a file✨
• extattr(2freebsd)system calls to manipulate VFS extended attributes✨
• extattr_delete_fd(2freebsd)system calls to manipulate VFS extended attributes✨
• extattr_delete_file(2freebsd)system calls to manipulate VFS extended attributes✨
• extattr_delete_link(2freebsd)system calls to manipulate VFS extended attributes✨
• extattr_get_fd(2freebsd)system calls to manipulate VFS extended attributes✨
• extattr_get_file(2freebsd)system calls to manipulate VFS extended attributes✨
• extattr_get_link(2freebsd)system calls to manipulate VFS extended attributes✨
• extattr_list_fd(2freebsd)system calls to manipulate VFS extended attributes✨
• extattr_list_file(2freebsd)system calls to manipulate VFS extended attributes✨
• extattr_list_link(2freebsd)system calls to manipulate VFS extended attributes✨
• extattr_set_fd(2freebsd)system calls to manipulate VFS extended attributes✨
• extattr_set_file(2freebsd)system calls to manipulate VFS extended attributes✨
• extattr_set_link(2freebsd)system calls to manipulate VFS extended attributes✨

F

• faccessat(2freebsd)check accessibility of a file✨
• fchdir(2freebsd)change current working directory✨
• fchflags(2freebsd)set file flags✨
• fchmod(2freebsd)change mode of file✨
• fchmodat(2freebsd)change mode of file✨
• fchown(2freebsd)change owner and group of a file✨
• fchownat(2freebsd)change owner and group of a file✨
• fcntl(2freebsd)file control✨
• fdatasync(2freebsd)synchronise changes to a file✨
• fexecve(2freebsd)execute a file✨
• ffclock(2freebsd)Retrieve feed-forward counter, get and set feed-forward clock estimates✨
• ffclock_getcounter(2freebsd)Retrieve feed-forward counter, get and set feed-forward clock estimates✨
• ffclock_getestimate(2freebsd)Retrieve feed-forward counter, get and set feed-forward clock estimates✨
• ffclock_setestimate(2freebsd)Retrieve feed-forward counter, get and set feed-forward clock estimates✨
• fhlink(2freebsd)make a hard file link✨
• fhlinkat(2freebsd)make a hard file link✨
• fhopen(2freebsd)access file via file handle✨
• fhreadlink(2freebsd)read value of a symbolic link✨
• fhstat(2freebsd)access file via file handle✨
• fhstatfs(2freebsd)access file via file handle✨
• flock(2freebsd)apply or remove an advisory lock on an open file✨
• fork(2freebsd)create a new process✨
• fpathconf(2freebsd)get configurable pathname variables✨
• fstat(2freebsd)get file status✨
• fstatat(2freebsd)get file status✨
• fstatfs(2freebsd)get file system statistics✨
• fsync(2freebsd)synchronise changes to a file✨
• ftruncate(2freebsd)truncate or extend a file to a specified length✨
• futimens(2freebsd)set file access and modification times✨
• futimes(2freebsd)set file access and modification times✨
• futimesat(2freebsd)set file access and modification times✨

G

• getaudit(2freebsd)retrieve audit session state✨
• getaudit_addr(2freebsd)retrieve audit session state✨
• getauid(2freebsd)retrieve audit session ID✨
• getdents(2freebsd)get directory entries in a file system independent format✨
• getdirentries(2freebsd)get directory entries in a file system independent format✨
• getdtablesize(2freebsd)get file descriptor limit✨
• getegid(2freebsd)get group process identification✨
• geteuid(2freebsd)get user identification✨
• getfh(2freebsd)get file handle✨
• getfhat(2freebsd)get file handle✨
• getfsstat(2freebsd)get list of all mounted file systems✨
• getgid(2freebsd)get group process identification✨
• getgroups(2freebsd)get group access list✨
• getitimer(2freebsd)get/set value of interval timer✨
• getlogin(2freebsd)get/set login name✨
• getloginclass(2freebsd)get/set login class✨
• getpeername(2freebsd)get name of connected peer✨
• getpgid(2freebsd)get process group✨
• getpgrp(2freebsd)get process group✨
• getpid(2freebsd)get parent or calling process identification✨
• getppid(2freebsd)get parent or calling process identification✨
• getpriority(2freebsd)get/set program scheduling priority✨
• getrandom(2freebsd)get random data✨
• getresgid(2freebsd)get or set real, effective and saved user or group ID✨
• getresuid(2freebsd)get or set real, effective and saved user or group ID✨
• getrlimit(2freebsd)control maximum system resource consumption✨
• getrusage(2freebsd)get information about resource utilization✨
• getsid(2freebsd)get process session✨
• getsockname(2freebsd)get socket name✨
• getsockopt(2freebsd)get and set options on sockets✨
• gettimeofday(2freebsd)get/set date and time✨
• getuid(2freebsd)get user identification✨

I

• i386_get_ioperm(2freebsd)manage per-process access to the i386 I/O port space✨
• i386_get_ldt(2freebsd)manage i386 per-process Local Descriptor Table entries✨
• i386_set_ioperm(2freebsd)manage per-process access to the i386 I/O port space✨
• i386_set_ldt(2freebsd)manage i386 per-process Local Descriptor Table entries✨
• i386_vm86(2freebsd)control vm86-related functions✨
• intro(2freebsd)introduction to system calls and error numbers✨
• ioctl(2freebsd)control device✨
• issetugid(2freebsd)is current process tainted by uid or gid changes✨

J

• jail(2freebsd)create and manage system jails✨
• jail_attach(2freebsd)create and manage system jails✨
• jail_get(2freebsd)create and manage system jails✨
• jail_remove(2freebsd)create and manage system jails✨
• jail_set(2freebsd)create and manage system jails✨

K

• kenv(2freebsd)kernel environment✨
• kevent(2freebsd)kernel event notification mechanism✨
• kill(2freebsd)send signal to a process✨
• killpg(2freebsd)send signal to a process group✨
• kldfind(2freebsd)returns the fileid of a kld file✨
• kldfirstmod(2freebsd)return first module id from the kld file specified✨
• kldload(2freebsd)load KLD files into the kernel✨
• kldnext(2freebsd)return the fileid of the next kld file✨
• kldstat(2freebsd)get status of kld file✨
• kldsym(2freebsd)look up address by symbol name in a KLD✨
• kldunload(2freebsd)unload kld files✨
• kldunloadf(2freebsd)unload kld files✨
• kqueue(2freebsd)kernel event notification mechanism✨
• ktrace(2freebsd)process tracing✨

L

• lchflags(2freebsd)set file flags✨
• lchmod(2freebsd)change mode of file✨
• lchown(2freebsd)change owner and group of a file✨
• lgetfh(2freebsd)get file handle✨
• link(2freebsd)make a hard file link✨
• linkat(2freebsd)make a hard file link✨
• lio_listio(2freebsd)list directed I/O (REALTIME)✨
• listen(2freebsd)listen for connections on a socket✨
• lpathconf(2freebsd)get configurable pathname variables✨
• lseek(2freebsd)reposition read/write file offset✨
• lstat(2freebsd)get file status✨
• lutimes(2freebsd)set file access and modification times✨

M

• madvise(2freebsd)give advice about use of memory✨
• mincore(2freebsd)determine residency of memory pages✨
• minherit(2freebsd)control the inheritance of pages✨
• mkdir(2freebsd)make a directory file✨
• mkdirat(2freebsd)make a directory file✨
• mkfifo(2freebsd)make a fifo file✨
• mkfifoat(2freebsd)make a fifo file✨
• mknod(2freebsd)make a special file node✨
• mknodat(2freebsd)make a special file node✨
• mlock(2freebsd)lock (unlock) physical pages in memory✨
• mlockall(2freebsd)lock (unlock) the address space of a process✨
• mmap(2freebsd)allocate memory, or map files or devices into memory✨
• modfind(2freebsd)returns the modid of a kernel module✨
• modfnext(2freebsd)return the modid of the next kernel module✨
• modnext(2freebsd)return the modid of the next kernel module✨
• modstat(2freebsd)get status of kernel module✨
• mount(2freebsd)mount or dismount a file system✨
• mprotect(2freebsd)control the protection of pages✨
• mq_close(2freebsd)close a message queue (REALTIME)✨
• mq_getattr(2freebsd)get message queue attributes (REALTIME)✨
• mq_notify(2freebsd)notify process that a message is available (REALTIME)✨
• mq_open(2freebsd)open a message queue (REALTIME)✨
• mq_receive(2freebsd)receive a message from message queue (REALTIME)✨
• mq_send(2freebsd)send a message to message queue (REALTIME)✨
• mq_setattr(2freebsd)set message queue attributes (REALTIME)✨
• mq_timedreceive(2freebsd)receive a message from message queue (REALTIME)✨