Systemcalls

pselect6 (2) - synchronous I/O multiplexing
_Exit (2) - terminate the calling process
__clone2 (2) - create a child process
_exit (2) - terminate the calling process
_llseek (2) - reposition read/write file offset
_newselect (2) - synchronous I/O multiplexing
_syscall (2) - invoking a system call without library support
(OBSOLETE)
_sysctl (2) - read/write system parameters
accept (2) - accept a connection on a socket
accept4 (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
add_key (2) - Add a key to the kernel's key management
facility
adjtimex (2) - tune kernel clock
afs_syscall (2) - 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
arm_fadvise (2) - predeclare an access pattern for file data
arm_fadvise64_64 (2) - predeclare an access pattern for file data
arm_sync_file_range (2) - sync a file segment with disk
bdflush (2) - start, flush, or tune buffer-dirty-flush daemon
bind (2) - bind a name to a socket
break (2) - unimplemented system calls
brk (2) - change data segment size
cacheflush (2) - flush contents of instruction and/or data cache
capget (2) - set/get capabilities of thread(s)
capset (2) - 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
chown32 (2) - change ownership of a file
chroot (2) - change root directory
clock_getres (2) - clock and time functions
clock_gettime (2) - clock and time functions
clock_nanosleep (2) - high-resolution sleep with specifiable clock
clock_settime (2) - clock and time functions
clone (2) - create a child process
clone2 (2) - create a child process
close (2) - close a file descriptor
connect (2) - initiate a connection on a socket
creat (2) - open and possibly create a file or device
create_module (2) - create a loadable module entry
delete_module (2) - delete a loadable module entry
dup (2) - duplicate a file descriptor
dup2 (2) - duplicate a file descriptor
dup3 (2) - duplicate a file descriptor
epoll_create (2) - open an epoll file descriptor
epoll_create1 (2) - open an epoll file descriptor
epoll_ctl (2) - control interface for an epoll descriptor
epoll_pwait (2) - 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
eventfd2 (2) - create a file descriptor for event notification
execve (2) - execute program
exit (2) - terminate the calling process
exit_group (2) - exit all threads in a process
faccessat (2) - check user's permissions of a file relative to a
directory file descriptor
fadvise64 (2) - predeclare an access pattern for file data
fadvise64_64 (2) - predeclare an access pattern for file data
fallocate (2) - manipulate file space
fchdir (2) - change working directory
fchmod (2) - change permissions of a file
fchmodat (2) - change permissions of a file relative to a
directory file descriptor
fchown (2) - change ownership of a file
fchown32 (2) - change ownership of a file
fchownat (2) - change ownership of a file relative to a
directory file descriptor
fcntl (2) - manipulate file descriptor
fcntl64 (2) - manipulate file descriptor
fdatasync (2) - synchronize a file's in-core state with storage
device
flock (2) - apply or remove an advisory lock on an open file
fork (2) - create a child process
free_hugepages (2) - allocate or free huge pages
fstat (2) - get file status
fstat64 (2) - get file status
fstatat (2) - get file status relative to a directory file
descriptor
fstatat64 (2) - get file status relative to a directory file
descriptor
fstatfs (2) - get file system statistics
fstatfs64 (2) - get file system statistics
fstatvfs (2) - get file system statistics
fsync (2) - synchronize a file's in-core state with storage
device
stty (2) - unimplemented system calls
ftruncate (2) - truncate a file to a specified length
ftruncate64 (2) - truncate a file to a specified length
futex (2) - Fast Userspace Locking system call
futimesat (2) - change timestamps of a file relative to a
directory file descriptor
getcwd (2) - Get current working directory
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
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
getdents64 (2) - get directory entries
getdomainname (2) - get/set domain name
getdtablesize (2) - get descriptor table size
getegid (2) - get group identity
getegid32 (2) - get group identity
geteuid (2) - get user identity
geteuid32 (2) - get user identity
getgid (2) - get group identity
getgid32 (2) - get group identity
getgroups (2) - get/set list of supplementary group IDs
getgroups32 (2) - get/set list of supplementary group IDs
gethostid (2) - get or set the unique identifier of the current
host
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 (2) - set/get process group
getpgrp (2) - set/get process group
getpid (2) - get process identification
getpmsg (2) - unimplemented system calls
getppid (2) - get process identification
getpriority (2) - get/set program scheduling priority
getresgid (2) - get real, effective and saved user/group IDs
getresgid32 (2) - get real, effective and saved user/group IDs
getresuid (2) - get real, effective and saved user/group IDs
getresuid32 (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
getuid32 (2) - get user identity
gtty (2) - unimplemented system calls
idle (2) - make process 0 idle
inb (2) - port I/O
inb_p (2) - port I/O
init_module (2) - initialize a loadable module entry
inl (2) - port I/O
inl_p (2) - port I/O
inotify_add_watch (2) - add a watch to an initialized inotify instance
inotify_init (2) - initialize an inotify instance
inotify_init1 (2) - initialize an inotify instance
inotify_rm_watch (2) - remove an existing watch from an inotify
instance
insb (2) - port I/O
insl (2) - port I/O
insw (2) - port I/O
intro (2) - Introduction to system calls
inw (2) - port I/O
inw_p (2) - port I/O
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
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 (2) - get/set I/O scheduling class and priority
ioprio_set (2) - get/set I/O scheduling class and priority
ipc (2) - System V IPC system calls
kexec_load (2) - load a new kernel for later execution
keyctl (2) - Manipulate the kernel's key management facility
kill (2) - send signal to a process
killpg (2) - send signal to a process group
lchown (2) - change ownership of a file
lchown32 (2) - change ownership of a file
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
llseek (2) - reposition read/write file offset
lock (2) - unimplemented system calls
lookup_dcookie (2) - return a directory entry's path
lseek (2) - reposition read/write file offset
lstat (2) - get file status
lstat64 (2) - get file status
madvise (2) - give advice about use of memory
madvise1 (2) - unimplemented system calls
mbind (2) - Set memory policy for a memory range
migrate_pages (2) - move all pages in a process to another set of
nodes
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 (2) - 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 (2) - unimplemented system calls
mq_getsetattr (2) - get/set message queue attributes
mq_notify (2) - register for notification when a message is
available
mq_open (2) - open a message queue
mq_timedreceive (2) - receive a message from a message queue
mq_timedsend (2) - send a message to a message queue
mq_unlink (2) - remove a message queue
mremap (2) - remap a virtual memory address
msgctl (2) - message control operations
msgget (2) - get a message queue identifier
msgop (2) - message operations
msgrcv (2) - message operations
msgsnd (2) - message operations
msync (2) - synchronize a file with a memory map
munlock (2) - lock and unlock memory
munlockall (2) - lock and unlock memory
munmap (2) - map or unmap files or devices into memory
nanosleep (2) - high-resolution sleep
nfsservctl (2) - syscall interface to kernel nfs daemon
nice (2) - change process priority
oldfstat (2) - get file status
oldlstat (2) - get file status
oldolduname (2) - get name and information about current kernel
oldstat (2) - get file status
olduname (2) - get name and information about current kernel
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 (2) - port I/O
outl (2) - port I/O
outl_p (2) - port I/O
outsb (2) - port I/O
outsl (2) - port I/O
outsw (2) - port I/O
outw (2) - port I/O
outw_p (2) - port I/O
path_resolution (2) - how a pathname is resolved to a file
pause (2) - wait for signal
pciconfig_iobase (2) - pci device information handling
pciconfig_read (2) - pci device information handling
pciconfig_write (2) - pci device information handling
personality (2) - set the process execution domain
pipe (2) - create pipe
pipe2 (2) - 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 (2) - 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
pread64 (2) - read from or write to a file descriptor at a
given offset
preadv (2) - read or write data into multiple buffers
prlimit (2) - get/set resource limits
prof (2) - unimplemented system calls
pselect (2) - synchronous I/O multiplexing
ptrace (2) - process trace
putpmsg (2) - unimplemented system calls
pwrite (2) - read from or write to a file descriptor at a
given offset
pwrite64 (2) - read from or write to a file descriptor at a
given offset
pwritev (2) - read or write data into multiple buffers
quotactl (2) - manipulate disk quotas
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 (2) - receive a message from a socket
recvmmsg (2) - receive multiple messages on a socket
recvmsg (2) - receive a message from a socket
remap_file_pages (2) - create a nonlinear file mapping
rename (2) - change the name or location of a file
renameat (2) - rename a file relative to directory file
descriptors
request_key (2) - Request a key from the kernel's key management
facility
rmdir (2) - delete a directory
rt_sigaction (2) - examine and change a signal action
rt_sigpending (2) - examine pending signals
rt_sigprocmask (2) - examine and change blocked signals
rt_sigqueueinfo (2) - queue a signal and data
rt_sigreturn (2) - return from signal handler and cleanup stack
frame
rt_sigsuspend (2) - wait for a signal
rt_sigtimedwait (2) - synchronously wait for queued signals
rt_tgsigqueueinfo (2) - queue a signal and data
sbrk (2) - change data segment size
sched_get_priority_max (2) - get static priority range
sched_get_priority_min (2) - get static priority range
sched_getaffinity (2) - set and get a process's CPU affinity mask
sched_getparam (2) - set and get scheduling parameters
sched_getscheduler (2) - set and get scheduling policy/parameters
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 (2) - unimplemented system calls
select (2) - synchronous I/O multiplexing
select_tut (2) - synchronous I/O multiplexing
semctl (2) - semaphore control operations
semget (2) - get a semaphore set identifier
semop (2) - semaphore operations
semtimedop (2) - semaphore operations
send (2) - send a message on a socket
sendfile (2) - transfer data between file descriptors
sendfile64 (2) - transfer data between file descriptors
sendmsg (2) - send a message on a socket
sendto (2) - send a message on a socket
set_thread_area (2) - Set a Thread Local Storage (TLS) area
set_tid_address (2) - set pointer to thread ID
setcontext (2) - get or set the user context
setdomainname (2) - get/set domain name
setegid (2) - set effective user or group ID
seteuid (2) - set effective user or group ID
setfsgid (2) - set group identity used for file system checks
setfsgid32 (2) - set group identity used for file system checks
setfsuid (2) - set user identity used for file system checks
setfsuid32 (2) - set user identity used for file system checks
setgid (2) - set group identity
setgid32 (2) - set group identity
setgroups (2) - get/set list of supplementary group IDs
setgroups32 (2) - get/set list of supplementary group IDs
sethostid (2) - get or set the unique identifier of the current
host
sethostname (2) - get/set hostname
setitimer (2) - get or set value of an interval timer
setns (2) - reassociate thread with a namespace
setpgid (2) - set/get process group
setpgrp (2) - set/get process group
setpriority (2) - get/set program scheduling priority
setregid (2) - set real and/or effective user or group ID
setregid32 (2) - set real and/or effective user or group ID
setresgid (2) - set real, effective and saved user or group ID
setresgid32 (2) - set real, effective and saved user or group ID
setresuid (2) - set real, effective and saved user or group ID
setresuid32 (2) - set real, effective and saved user or group ID
setreuid (2) - set real and/or effective user or group ID
setreuid32 (2) - set real and/or effective user or group ID
setrlimit (2) - get/set resource limits
setsid (2) - creates a session and sets the process group ID
setsockopt (2) - get and set options on sockets
settimeofday (2) - get / set time
setuid (2) - set user identity
setuid32 (2) - set user identity
setup (2) - setup devices and file systems, mount root file
system
sgetmask (2) - manipulation of signal mask (obsolete)
shmat (2) - shared memory operations
shmctl (2) - shared memory control
shmdt (2) - shared memory operations
shmget (2) - allocates a shared memory segment
shmop (2) - shared memory operations
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
signalfd4 (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 (2) - 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 (2) - manipulation of signal mask (obsolete)
stat (2) - get file status
stat64 (2) - get file status
statfs (2) - get file system statistics
statfs64 (2) - get file system statistics
statvfs (2) - get file system statistics
stime (2) - set time
subpage_prot (2) - define a subpage protection for an address range
swapoff (2) - 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
sync_file_range2 (2) - sync a file segment with disk
syncfs (2) - commit buffer cache to 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
tee (2) - duplicating pipe content
tgkill (2) - send a signal to a thread
time (2) - get time in seconds
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 (2) - arm/disarm and fetch state of POSIX per-process
timer
timer_settime (2) - arm/disarm and fetch state of POSIX per-process
timer
timerfd_create (2) - timers that notify via file descriptors
timerfd_gettime (2) - timers that notify via file descriptors
timerfd_settime (2) - timers that notify via file descriptors
times (2) - get process times
tkill (2) - send a signal to a thread
truncate (2) - truncate a file to a specified length
truncate64 (2) - truncate a file to a specified length
tuxcall (2) - unimplemented system calls
ugetrlimit (2) - get/set resource limits
umask (2) - set file mode creation mask
umount (2) - unmount file system
umount2 (2) - unmount file system
uname (2) - get name and information about current kernel
unimplemented (2) - unimplemented system calls
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 (2) - change file last access and modification times
vfork (2) - create a child process and block parent
vhangup (2) - virtually hangup the current tty
vm86 (2) - enter virtual 8086 mode
vm86old (2) - enter virtual 8086 mode
vmsplice (2) - splice user pages into a pipe
vserver (2) - unimplemented system calls
wait (2) - wait for process to change state
wait3 (2) - wait for process to change state, BSD style
wait4 (2) - wait for process to change state, BSD style
waitid (2) - wait for process to change state
waitpid (2) - wait for process to change state
write (2) - write to a file descriptor
writev (2) - read or write data into multiple buffers