Manual Pages - Names and Descriptions

Section 2: System Calls

Helios (Sat Nov 21 07:28:15 CST 2009)
Manual pages referenced in /usr/share/man/whatis /usr/local/share/man/whatis

A B C D E F G I K L M N O P Q R S T U V W _

Other sections: 1. User Commands 3. Library Functions 4. Special Files 5. File Formats 6. Games 7. Miscellany 8. Administration and Privileged Commands

A

accept(2): - accept a connection on a socket
access(2): - check real user's permissions for a file
acct(2): - switch process accounting on or off
adjtimex(2): - tune kernel clock
afs_syscall([unimplemented]): - unimplemented system calls
alarm(2): - set an alarm clock for delivery of a signal
alloc_hugepages(2): - allocate or free huge pages
arch_prctl(2): - set architecture-specific thread state

B

bdflush(2): - start, flush, or tune buffer-dirty-flush daemon
bind(2): - bind a name to a socket
break([unimplemented]): - unimplemented system calls
brk(2): - change data segment size

C

cacheflush(2): - flush contents of instruction and/or data cache
capget(2): - set/get capabilities of thread(s)
capset([capget]): - set/get capabilities of thread(s)
chdir(2): - change working directory
chmod(2): - change permissions of a file
chown(2): - change ownership of a file
chroot(2): - change root directory
clock_getres(2): - clock and time functions
clock_gettime([clock_getres]): - clock and time functions
clock_nanosleep(2): - high-resolution sleep with specifiable clock
clock_settime([clock_getres]): - clock and time functions
clone(2): - create a child process
close(2): - close a file descriptor
connect(2): - initiate a connection on a socket
creat([open]): - open and possibly create a file or device
create_module(2): - create a loadable module entry

D

delete_module(2): - delete a loadable module entry
dup(2): - duplicate a file descriptor
dup2([dup]): - duplicate a file descriptor
dup3([dup]): - duplicate a file descriptor

E

epoll_create(2): - open an epoll file descriptor
epoll_create1([epoll_create]): - open an epoll file descriptor
epoll_ctl(2): - control interface for an epoll descriptor
epoll_pwait([epoll_wait]): - wait for an I/O event on an epoll file descriptor
epoll_wait(2): - wait for an I/O event on an epoll file descriptor
eventfd(2): - create a file descriptor for event notification
execve(2): - execute program
exit_group(2): - exit all threads in a process

F

faccessat(2): - check user's permissions of a file relative to a directory file descriptor
fallocate(2): - manipulate file space
fchdir([chdir]): - change working directory
fchmod([chmod]): - change permissions of a file
fchmodat(2): - change permissions of a file relative to a directory file descriptor
fchown([chown]): - change ownership of a file
fchownat(2): - change ownership of a file relative to a directory file descriptor
fcntl(2): - manipulate file descriptor
fdatasync([fsync]): - synchronize a file's in-core state with storage device
FD_CLR([select]): - synchronous I/O multiplexing; - synchronous I/O multiplexing
FD_ISSET([select]): - synchronous I/O multiplexing; - synchronous I/O multiplexing
FD_SET([select]): - synchronous I/O multiplexing; - synchronous I/O multiplexing
FD_ZERO([select]): - synchronous I/O multiplexing; - synchronous I/O multiplexing
fgetxattr([getxattr]): - retrieve an extended attribute value
flistxattr([listxattr]): - list extended attribute names
flock(2): - apply or remove an advisory lock on an open file
fork(2): - create a child process
free_hugepages([alloc_hugepages]): - allocate or free huge pages
fremovexattr([removexattr]): - remove an extended attribute
fsetxattr([setxattr]): - set an extended attribute value
fstat([stat]): - get file status
fstatat(2): - get file status relative to a directory file descriptor
fstatfs([statfs]): - get file system statistics
fstatvfs([statvfs]): - get file system statistics
fsync(2): - synchronize a file's in-core state with storage device
ftime([unimplemented]): - unimplemented system calls
ftruncate([truncate]): - truncate a file to a specified length
futex(2): - Fast Userspace Locking system call
futimens([utimensat]): - change file timestamps with nanosecond precision
futimesat(2): - change timestamps of a file relative to a directory file descriptor

G

getcontext(2): - get or set the user context
getcpu(2): - determine CPU and NUMA node on which the calling thread is running
getdents(2): - get directory entries
getdomainname(2): - get/set domain name
getdtablesize(2): - get descriptor table size
getegid([getgid]): - get group identity
geteuid([getuid]): - get user identity
getgid(2): - get group identity
getgroups(2): - get/set list of supplementary group IDs
gethostname(2): - get/set hostname
getitimer(2): - get or set value of an interval timer
getpagesize(2): - get memory page size
getpeername(2): - get name of connected peer socket
getpgid([setpgid]): - set/get process group
getpgrp([setpgid]): - set/get process group
getpid(2): - get process identification
getpmsg([unimplemented]): - unimplemented system calls
getppid([getpid]): - get process identification
getpriority(2): - get/set program scheduling priority
getresgid([getresuid]): - get real, effective and saved user/group IDs
getresuid(2): - get real, effective and saved user/group IDs
getrlimit(2): - get/set resource limits
getrusage(2): - get resource usage
getsid(2): - get session ID
getsockname(2): - get socket name
getsockopt(2): - get and set options on sockets
gettid(2): - get thread identification
gettimeofday(2): - get / set time
getuid(2): - get user identity
getxattr(2): - retrieve an extended attribute value
get_kernel_syms(2): - retrieve exported kernel and module symbols
get_mempolicy(2): - Retrieve NUMA memory policy for a process
get_thread_area(2): - Get a Thread Local Storage (TLS) area
gtty([unimplemented]): - unimplemented system calls

I

idle(2): - make process 0 idle
inb([outb]): - port I/O
inb_p([outb]): - port I/O
init_module(2): - initialize a loadable module entry
inl([outb]): - port I/O
inl_p([outb]): - port I/O
inotify_add_watch(2): - add a watch to an initialized inotify instance
inotify_init(2): - initialize an inotify instance
inotify_init1([inotify_init]): - initialize an inotify instance
inotify_rm_watch(2): - remove an existing watch from an inotify instance
insb([outb]): - port I/O
insl([outb]): - port I/O
insw([outb]): - port I/O
intro(2): - Introduction to system calls
inw([outb]): - port I/O
inw_p([outb]): - port I/O
ioctl(2): - control device
ioctl_list(2): - list of ioctl calls in Linux/i386 kernel
ioperm(2): - set port input/output permissions
iopl(2): - change I/O privilege level
ioprio_get([ioprio_set]): - get/set I/O scheduling class and priority
ioprio_set(2): - get/set I/O scheduling class and priority
io_cancel(2): - cancel an outstanding asynchronous I/O operation
io_destroy(2): - destroy an asynchronous I/O context
io_getevents(2): - read asynchronous I/O events from the completion queue
io_setup(2): - create an asynchronous I/O context
io_submit(2): - submit asynchronous I/O blocks for processing
ipc(2): - System V IPC system calls

K

kill(2): - send signal to a process
killpg(2): - send signal to a process group
klogctl([syslog]): - read and/or clear kernel message ring buffer; set console_loglevel

L

lchown([chown]): - change ownership of a file
lgetxattr([getxattr]): - retrieve an extended attribute value
link(2): - make a new name for a file
linkat(2): - create a file link relative to directory file descriptors
listen(2): - listen for connections on a socket
listxattr(2): - list extended attribute names
llistxattr([listxattr]): - list extended attribute names
lock([unimplemented]): - unimplemented system calls
lookup_dcookie(2): - return a directory entry's path
lremovexattr([removexattr]): - remove an extended attribute
lseek(2): - reposition read/write file offset
lsetxattr([setxattr]): - set an extended attribute value
lstat([stat]): - get file status

M

madvise(2): - give advice about use of memory
madvise1([unimplemented]): - unimplemented system calls
mbind(2): - Set memory policy for a memory range
mincore(2): - determine whether pages are resident in memory
mkdir(2): - create a directory
mkdirat(2): - create a directory relative to a directory file descriptor
mknod(2): - create a special or ordinary file
mknodat(2): - create a special or ordinary file relative to a directory file descriptor
mlock(2): - lock and unlock memory
mlockall([mlock]): - lock and unlock memory
mmap(2): - map or unmap files or devices into memory
mmap2(2): - map files or devices into memory
modify_ldt(2): - get or set ldt
mount(2): - mount file system
move_pages(2): - move individual pages of a process to another node
mprotect(2): - set protection on a region of memory
mpx([unimplemented]): - unimplemented system calls
mq_getsetattr(2): - get/set message queue attributes
mremap(2): - re-map a virtual memory address
msgctl(2): - message control operations
msgget(2): - get a message queue identifier
msgrcv([msgop]): - message operations
msgsnd([msgop]): - message operations
msync(2): - synchronize a file with a memory map
munlock([mlock]): - lock and unlock memory
munlockall([mlock]): - lock and unlock memory
munmap([mmap]): - map or unmap files or devices into memory

N

nanosleep(2): - high-resolution sleep
nfsservctl(2): - syscall interface to kernel nfs daemon
nice(2): - change process priority

O

open(2): - open and possibly create a file or device
openat(2): - open a file relative to a directory file descriptor
outb(2): - port I/O
outb_p([outb]): - port I/O
outl([outb]): - port I/O
outl_p([outb]): - port I/O
outsb([outb]): - port I/O
outsl([outb]): - port I/O
outsw([outb]): - port I/O
outw([outb]): - port I/O
outw_p([outb]): - port I/O

P

pause(2): - wait for signal
pciconfig_iobase([pciconfig_read]): - pci device information handling
pciconfig_read(2): - pci device information handling
pciconfig_write([pciconfig_read]): - pci device information handling
personality(2): - set the process execution domain
pipe(2): - create pipe
pipe2([pipe]): - create pipe
pivot_root(2): - change the root file system
poll(2): - wait for some event on a file descriptor
posix_fadvise(2): - predeclare an access pattern for file data
ppoll([poll]): - wait for some event on a file descriptor
prctl(2): - operations on a process
pread(2): - read from or write to a file descriptor at a given offset
prof([unimplemented]): - unimplemented system calls
profil([unimplemented]): - unimplemented system calls
pselect([select]): - synchronous I/O multiplexing; - synchronous I/O multiplexing
ptrace(2): - process trace
putpmsg([unimplemented]): - unimplemented system calls
pwrite([pread]): - read from or write to a file descriptor at a given offset

Q

query_module(2): - query the kernel for various bits pertaining to modules
quotactl(2): - manipulate disk quota

R

read(2): - read from a file descriptor
readahead(2): - perform file readahead into page cache
readdir(2): - read directory entry
readlink(2): - read value of a symbolic link
readlinkat(2): - read value of a symbolic link relative to a directory file descriptor
readv(2): - read or write data into multiple buffers
reboot(2): - reboot or enable/disable Ctrl-Alt-Del
recv(2): - receive a message from a socket
recvfrom([recv]): - receive a message from a socket
recvmsg([recv]): - receive a message from a socket
remap_file_pages(2): - create a non-linear file mapping
removexattr(2): - remove an extended attribute
rename(2): - change the name or location of a file
renameat(2): - rename a file relative to directory file descriptors
rmdir(2): - delete a directory
rt_sigqueueinfo([sigqueue]): - queue a signal and data to a process

S

sbrk([brk]): - change data segment size
sched_getaffinity([sched_setaffinity]): - set and get a process's CPU affinity mask
sched_getparam([sched_setparam]): - set and get scheduling parameters
sched_getscheduler([sched_setscheduler]): - set and get scheduling policy/parameters
sched_get_priority_max(2): - get static priority range
sched_get_priority_min([sched_get_priority_max]): - get static priority range
sched_rr_get_interval(2): - get the SCHED_RR interval for the named process
sched_setaffinity(2): - set and get a process's CPU affinity mask
sched_setparam(2): - set and get scheduling parameters
sched_setscheduler(2): - set and get scheduling policy/parameters
sched_yield(2): - yield the processor
security([unimplemented]): - unimplemented system calls
select(2): - synchronous I/O multiplexing
select([select_tut]): - synchronous I/O multiplexing
semctl(2): - semaphore control operations
semget(2): - get a semaphore set identifier
semop(2): - semaphore operations
semtimedop([semop]): - semaphore operations
send(2): - send a message on a socket
sendfile(2): - transfer data between file descriptors
sendmsg([send]): - send a message on a socket
sendto([send]): - send a message on a socket
setcontext([getcontext]): - get or set the user context
setdomainname([getdomainname]): - get/set domain name
setegid([seteuid]): - set effective user or group ID
seteuid(2): - set effective user or group ID
setfsgid(2): - set group identity used for file system checks
setfsuid(2): - set user identity used for file system checks
setgid(2): - set group identity
setgroups([getgroups]): - get/set list of supplementary group IDs
sethostname([gethostname]): - get/set hostname
setitimer([getitimer]): - get or set value of an interval timer
setpgid(2): - set/get process group
setpgrp([setpgid]): - set/get process group
setpriority([getpriority]): - get/set program scheduling priority
setregid([setreuid]): - set real and/or effective user or group ID
setresgid([setresuid]): - set real, effective and saved user or group ID
setresuid(2): - set real, effective and saved user or group ID
setreuid(2): - set real and/or effective user or group ID
setrlimit([getrlimit]): - get/set resource limits
setsid(2): - creates a session and sets the process group ID
setsockopt([getsockopt]): - get and set options on sockets
settimeofday([gettimeofday]): - get / set time
setuid(2): - set user identity
setup(2): - setup devices and file systems, mount root file system
setxattr(2): - set an extended attribute value
set_mempolicy(2): - set default NUMA memory policy for a process and its children
set_thread_area(2): - Set a Thread Local Storage (TLS) area
set_tid_address(2): - set pointer to thread ID
sgetmask(2): - manipulation of signal mask (obsolete)
shmat([shmop]): - shared memory operations
shmctl(2): - shared memory control
shmdt([shmop]): - shared memory operations
shmget(2): - allocates a shared memory segment
shutdown(2): - shut down part of a full-duplex connection
sigaction(2): - examine and change a signal action
sigaltstack(2): - set and/or get signal stack context
signal(2): - ANSI C signal handling
signalfd(2): - create a file descriptor for accepting signals
sigpending(2): - examine pending signals
sigprocmask(2): - examine and change blocked signals
sigqueue(2): - queue a signal and data to a process
sigreturn(2): - return from signal handler and cleanup stack frame
sigsuspend(2): - wait for a signal
sigtimedwait([sigwaitinfo]): - synchronously wait for queued signals
sigwaitinfo(2): - synchronously wait for queued signals
socket(2): - create an endpoint for communication
socketcall(2): - socket system calls
socketpair(2): - create a pair of connected sockets
splice(2): - splice data to/from a pipe
spu_create(2): - create a new spu context
spu_run(2): - execute an SPU context
ssetmask([sgetmask]): - manipulation of signal mask (obsolete)
stat(2): - get file status
statfs(2): - get file system statistics
statvfs(2): - get file system statistics
stime(2): - set time
stty([unimplemented]): - unimplemented system calls
swapoff([swapon]): - start/stop swapping to file/device
swapon(2): - start/stop swapping to file/device
symlink(2): - make a new name for a file
symlinkat(2): - create a symbolic link relative to a directory file descriptor
sync(2): - commit buffer cache to disk
sync_file_range(2): - sync a file segment with disk
syscall(2): - indirect system call
syscalls(2): - Linux system calls
sysctl(2): - read/write system parameters
sysfs(2): - get file system type information
sysinfo(2): - returns information on overall system statistics
syslog(2): - read and/or clear kernel message ring buffer; set console_loglevel

T

tee(2): - duplicating pipe content
tgkill([tkill]): - send a signal to a thread
time(2): - get time in seconds
timerfd_create(2): - timers that notify via file descriptors
timerfd_gettime([timerfd_create]): - timers that notify via file descriptors
timerfd_settime([timerfd_create]): - timers that notify via file descriptors
timer_create(2): - create a POSIX per-process timer
timer_delete(2): - delete a POSIX per-process timer
timer_getoverrun(2): - get overrun count for a POSIX per-process timer
timer_gettime([timer_settime]): - arm/disarm and fetch state of POSIX per-process timer
timer_settime(2): - arm/disarm and fetch state of POSIX per-process timer
times(2): - get process times
tkill(2): - send a signal to a thread
truncate(2): - truncate a file to a specified length
tuxcall([unimplemented]): - unimplemented system calls

U

ulimit([unimplemented]): - unimplemented system calls
umask(2): - set file mode creation mask
umount(2): - unmount file system
umount2([umount]): - unmount file system
uname(2): - get name and information about current kernel
unlink(2): - delete a name and possibly the file it refers to
unlinkat(2): - remove a directory entry relative to a directory file descriptor
unshare(2): - disassociate parts of the process execution context
uselib(2): - load shared library
ustat(2): - get file system statistics
utime(2): - change file last access and modification times
utimensat(2): - change file timestamps with nanosecond precision
utimes([utime]): - change file last access and modification times

V

v4l-info(1): - dump video4linux(2) device info to stdout
vfork(2): - create a child process and block parent
vhangup(2): - virtually hangup the current tty
vm86(2): - enter virtual 8086 mode
vm86old([vm86]): - enter virtual 8086 mode
vmsplice(2): - splice user pages into a pipe
vserver([unimplemented]): - unimplemented system calls

W

wait(2): - wait for process to change state
wait3([wait4]): - wait for process to change state, BSD style
wait4(2): - wait for process to change state, BSD style
waitid([wait]): - wait for process to change state
waitpid([wait]): - wait for process to change state
write(2): - write to a file descriptor
writev([readv]): - read or write data into multiple buffers

_

_clone2([clone]): - create a child process
_exit(2): - terminate the calling process
_Exit([_exit]): - terminate the calling process
_llseek([llseek]): - reposition read/write file offset
_syscall(2): - invoking a system call without library support (OBSOLETE)

A B C D E F G I K L M N O P Q R S T U V W _

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Other sections: 1. User Commands 3. Library Functions 4. Special Files 5. File Formats 6. Games 7. Miscellany 8. Administration and Privileged Commands