Next: 12 Abbreviations Up: e Previous: 10.6 Additional Comments

# 11 Systemcalls in alphabetical order

     lcr

     just-a-tabspace-holder- ¯

     _exit 		 - 		 like exit but with fewer actions (m+c)

     accept 		 - 		 accept a connection on a socket (m+c!)

     access 		 - 		 check user's permissions for a file (m+c)

     acct 		 - 		 not yet implemented (mc)

     adjtimex 		 - 		 set/get kernel time variables (-c)

     afs_syscall 		 - 		 reserved andrew filesystem call (-)

     alarm 		 - 		 send SIGALRM at a specified time (m+c)

     bdflush 		 - 		 flush dirty buffers to disk (-c)

     bind 		 - 		 name a socket for interprocess communication (m!c)

     break 		 - 		 not yet implemented (-)

     brk 		 - 		 change data segment size (mc)

     chdir 		 - 		 change working directory (m+c)

     chmod 		 - 		 change file attributes (m+c)

     chown 		 - 		 change ownership of a file (m+c)

     chroot 		 - 		 set a new root directory (mc)

     clone 		 - 		 see fork (m-)

     close 		 - 		 close a file by reference (m+c)

     connect 		 - 		 link 2 sockets (m!c)

     creat 		 - 		 create a file (m+c)

     create_module 		 - 		 allocate space for a loadable kernel module (-)

     delete_module 		 - 		 unload a kernel module (-)

     dup 		 - 		 create a file descriptor duplicate (m+c)

     dup2 		 - 		 duplicate a file descriptor (m+c)

     execl, execlp, execle, ...		 - 		 see execve (m+!c)

     execve 		 - 		 execute a file (m+c)

     exit 		 - 		 terminate a program (m+c)

     fchdir 		 - 		 change working directory by reference ()

     fchmod 		 - 		 see chmod (mc)

     fchown 		 - 		 change ownership of a file (mc)

     fclose 		 - 		 close a file by reference (m+!c)

     fcntl 		 - 		 file/filedescriptor control (m+c)

     flock 		 - 		 change file locking (m!c)

     fork 		 - 		 create a child process (m+c)

     fpathconf 		 - 		 get info about a file by reference (m+!c)

     fread 		 - 		 read array of binary data from stream (m+!c)

     fstat 		 - 		 get file status (m+c)

     fstatfs 		 - 		 get filesystem status by reference (mc)

     fsync 		 - 		 write file cache to disk (mc)

     ftime 		 - 		 get timezone+seconds since 1.1.1970 (m!c)

     ftruncate 		 - 		 change file size (mc)

     fwrite 		 - 		 write array of binary datas to stream (m+!c)

     get_kernel_syms 		 - 		 get kernel symbol table or its size (-)

     getdomainname 		 - 		 get system's domainname (m!c)

     getdtablesize 		 - 		 get filedescriptor table size (m!c)

     getegid 		 - 		 get effective group id (m+c)

     geteuid 		 - 		 get effective user id (m+c)

     getgid 		 - 		 get real group id (m+c)

     getgroups 		 - 		 get supplemental groups (m+c)

     gethostid 		 - 		 get unique host identifier (m!c)

     gethostname 		 - 		 get system's hostname (m!c)

     getitimer 		 - 		 get value of interval timer (mc)

     getpagesize 		 - 		 get size of a system page (m-!c)

     getpeername 		 - 		 get address of a connected peer socket (m!c)

     getpgid 		 - 		 get parent group id of a process (+c)

     getpgrp 		 - 		 get parent group id of current process (m+c)

     getpid 		 - 		 get process id of current process (m+c)

     getppid 		 - 		 get process id of the parent process (m+c)

     getpriority 		 - 		 get a process/group/user priority (mc)

     getrlimit 		 - 		 get resource limits (mc)

     getrusage 		 - 		 get usage of resources (m)

     getsockname 		 - 		 get the adress of a socket (m!c)

     getsockopt 		 - 		 get option settings of a socket (m!c)

     gettimeofday 		 - 		 get timezone+seconds since 1.1.1970 (mc)

     getuid 		 - 		 get real uid (m+c)

     gtty 		 - 		 not yet implemented ()

     idle 		 - 		 make a process a candidate for swap (mc)

     init_module 		 - 		 insert a loadable kernel module (-)

     ioctl 		 - 		 manipulate a character device (mc)

     ioperm 		 - 		 set some i/o port's permissions (m-c)

     iopl 		 - 		 set all i/o port's permissions (m-c)

     ipc 		 - 		 interprocess communication (-c)

     kill 		 - 		 send a signal to a process (m+c)

     killpg 		 - 		 send a signal to a process group (mc!)

     klog 		 - 		 see syslog (-!)

     link 		 - 		 create a hardlink for an existing file (m+c)

     listen 		 - 		 listen for socket connections (m!c)

     llseek 		 - 		 lseek for large files (-)

     lock 		 - 		 not implemented yet ()

     lseek 		 - 		 change the position ptr of a file descriptor (m+c)

     lstat 		 - 		 get file status (mc)

     mkdir 		 - 		 create a directory (m+c)

     mknod 		 - 		 create a device (mc)

     mmap 		 - 		 map a file into memory (mc)

     modify_ldt 		 - 		 read or write local descriptor table (-)

     mount 		 - 		 mount a filesystem (mc)

     mprotect 		 - 		 read, write or execute protect memory (-)

     mpx 		 - 		 not implemented yet ()

     msgctl 		 - 		 ipc message control (m!c)

     msgget 		 - 		 get an ipc message queue id (m!c)

     msgrcv 		 - 		 receive an ipc message (m!c)

     msgsnd 		 - 		 send an ipc message (m!c)

     munmap 		 - 		 unmap a file from memory (mc)

     nice 		 - 		 change process priority (mc)

     oldfstat 		 - 		 no longer existing

     oldlstat 		 - 		 no longer existing

     oldolduname 		 - 		 no longer existing

     oldstat 		 - 		 no longer existing

     olduname 		 - 		 no longer existing

     open 		 - 		 open a file (m+c)

     pathconf 		 - 		 get information about a file (m+!c)

     pause 		 - 		 sleep until signal (m+c)

     personality 		 - 		 change current execution domain for ibcs (-)

     phys 		 - 		 not implemented yet (m)

     pipe 		 - 		 create a pipe (m+c)

     prof 		 - 		 not yet implemented ()

     profil 		 - 		 execution time profile (m!c)

     ptrace 		 - 		 trace a child process (mc)

     quotactl 		 - 		 not implemented yet ()

     read 		 - 		 read data from a file (m+c)

     readv 		 - 		 read datablocks from a file (m!c)

     readdir 		 - 		 read a directory (m+c)

     readlink 		 - 		 get content of a symbolic link (mc)

     reboot 		 - 		 reboot or toggle vulcan death grip (-mc)

     recv 		 - 		 receive a message from a connected socket (m!c)

     recvfrom 		 - 		 receive a message from a socket (m!c)

     rename 		 - 		 move/rename a file (m+c)

     rmdir 		 - 		 delete an empty directory (m+c)

     sbrk 		 - 		 see brk (mc!)

     select 		 - 		 sleep until action on a filedescriptor (mc)

     semctl 		 - 		 ipc semaphore control (m!c)

     semget 		 - 		 ipc get a semaphore set identifier (m!c)

     semop 		 - 		 ipc operation on semaphore set members (m!c)

     send 		 - 		 send a message to a connected socket (m!c)

     sendto 		 - 		 send a message to a socket (m!c)

     setdomainname 		 - 		 set system's domainname (mc)

     setfsgid 		 - 		 set filesystem group id ()

     setfsuid 		 - 		 set filesystem user id ()

     setgid 		 - 		 set real group id (m+c)

     setgroups 		 - 		 set supplemental groups (mc)

     sethostid 		 - 		 set unique host identifier (mc)

     sethostname 		 - 		 set the system's hostname (mc)

     setitimer 		 - 		 set interval timer (mc)

     setpgid 		 - 		 set process group id (m+c)

     setpgrp 		 - 		 has no effect (mc!)

     setpriority 		 - 		 set a process/group/user priority (mc)

     setregid 		 - 		 set real and effective group id (mc)

     setreuid 		 - 		 set real and effective user id (mc)

     setrlimit 		 - 		 set resource limit (mc)

     setsid 		 - 		 create a session (+c)

     setsockopt 		 - 		 change options of a socket (mc)

     settimeofday 		 - 		 set timezone+seconds since 1.1.1970 (mc)

     setuid 		 - 		 set real user id (m+c)

     setup 		 - 		 initialize devices and mount root (-)

     sgetmask 		 - 		 see siggetmask (m)

     shmat 		 - 		 attach shared memory to data segment (m!c)

     shmctl 		 - 		 ipc manipulate shared memory (m!c)

     shmdt 		 - 		 detach shared memory from data segment (m!c)

     shmget 		 - 		 get/create shared memory segment (m!c)

     shutdown 		 - 		 shutdown a socket (m!c)

     sigaction 		 - 		 set/get signal handler (m+c)

     sigblock 		 - 		 block signals (m!c)

     siggetmask 		 - 		 get signal blocking of current process (!c)

     signal 		 - 		 setup a signal handler (mc)

     sigpause 		 - 		 use a new signal mask until a signal (mc)

     sigpending 		 - 		 get pending, but blocked signals (m+c)

     sigprocmask 		 - 		 set/get signal blocking of current process (+c)

     sigreturn 		 - 		 not yet used ()

     sigsetmask 		 - 		 set signal blocking of current process (c!)

     sigsuspend 		 - 		 replacement for sigpause (m+c)

     sigvec 		 - 		 see sigaction (m!)

     socket 		 - 		 create a socket communication endpoint (m!c)

     socketcall 		 - 		 socket call multiplexer (-)

     socketpair 		 - 		 create 2 connected sockets (m!c)

     ssetmask 		 - 		 see sigsetmask (m)

     stat 		 - 		 get file status (m+c)

     statfs 		 - 		 get filesystem status (mc)

     stime 		 - 		 set seconds since 1.1.1970 (mc)

     stty 		 - 		 not yet implemented ()

     swapoff 		 - 		 stop swapping to a file/device (m-c)

     swapon 		 - 		 start swapping to a file/device (m-c)

     symlink 		 - 		 create a symbolic link to a file (m+c)

     sync 		 - 		 sync memory and disk buffers (mc)

     syscall 		 - 		 execute a systemcall by number (-!c)

     sysconf 		 - 		 get value of a system variable (m+!c)

     sysfs 		 - 		 get infos about configured filesystems ()

     sysinfo 		 - 		 get Linux system infos (m-)

     syslog 		 - 		 manipulate system logging (m-c)

     system 		 - 		 execute a shell command (m!c)

     time 		 - 		 get seconds since 1.1.1970 (m+c)

     times 		 - 		 get process times (m+c)

     truncate 		 - 		 change file size (mc)

     ulimit 		 - 		 get/set file limits (c!)

     umask 		 - 		 set file creation mask (m+c)

     umount 		 - 		 unmount a filesystem (mc)

     uname 		 - 		 get system information (m+c)

     unlink 		 - 		 remove a file when not busy (m+c)

     uselib 		 - 		 use a shared library (m-c)

     ustat 		 - 		 not yet implemented (c)

     utime 		 - 		 modify inode time entries (m+c)

     utimes 		 - 		 see utime (m!c)

     vfork 		 - 		 see fork (m!c)

     vhangup 		 - 		 virtually hang up current tty (m-c)

     vm86 		 - 		 enter virtual 8086 mode (m-c)

     wait 		 - 		 wait for process termination (m+!c)

     wait3 		 - 		 bsd wait for a specified process (m!c)

     wait4 		 - 		 bsd wait for a specified process (mc)

     waitpid 		 - 		 wait for a specified process (m+c)

     write 		 - 		 write data to a file (m+c)

     writev 		 - 		 write datablocks to a file (m!c)

(m) manual page exists.
(+) POSIX compliant.
(-) Linux specific.
(c) in libc.
(!) not a sole system call.uses a different system call.

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