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.\" @(#)a.t 6.6 (Berkeley) 4/17/91
.ds RH Summary of facilities
\s+2I. Summary of facilities\s0
.h 1.1. "Process naming and protection
sethostid set UNIX host id
gethostid get UNIX host id
sethostname set UNIX host name
gethostname get UNIX host name
execve execute a different process
geteuid get effective user id
setreuid set real and effective user id's
getgid get accounting group id
getegid get effective accounting group id
getgroups get access group set
setregid set real and effective group id's
setgroups set access group set
getpgrp get process group
setpgrp set process group
.h 1.2 "Memory management
<sys/mman.h> memory management definitions
sbrk change data section size
sstk\(dg change stack section size
\(dg Not supported in 4.3BSD.
getpagesize get memory page size
mmap\(dg map pages of memory
msync\(dg flush modified mapped pages to filesystem
mprotect\(dg change protection of pages
madvise\(dg give memory management advice
mincore\(dg determine core residency of pages
msleep\(dg sleep on a lock
mwakeup\(dg wakeup process sleeping on a lock
<signal.h> signal definitions
sigvec set handler for signal
kill send signal to process
killpgrp send signal to process group
sigblock block set of signals
sigsetmask restore set of blocked signals
sigpause wait for signals
sigstack set software stack for signals
.h 1.4 "Timing and statistics
<sys/time.h> time-related definitions
gettimeofday get current time and timezone
settimeofday set current time and timezone
getitimer read an interval timer
setitimer get and set an interval timer
getdtablesize descriptor reference table size
dup2 duplicate to specified index
select multiplex input/output
fcntl control descriptor options
wrap\(dg wrap descriptor with protocol
\(dg Not supported in 4.3BSD.
.h 1.6 "Resource controls
<sys/resource.h> resource-related definitions
getpriority get process priority
setpriority set process priority
getrusage get resource usage
getrlimit get resource limitations
setrlimit set resource limitations
.h 1.7 "System operation support
mount mount a device file system
umount umount a file system
acct specify accounting file
.h 2.1 "Generic operations
<sys/uio.h> scatter-gather related definitions
readv scattered data input
writev gathered data output
<sys/ioctl.h> standard control operations
ioctl device control operation
Operations marked with a * exist in two forms: as shown,
operating on a file name, and operating on a file descriptor,
when the name is preceded with a ``f''.
<sys/file.h> file system definitions
chroot change root directory
open open a new or existing file
mknod make a special file
portal\(dg make a portal entry
stat* return status for a file
lstat returned status of link
utimes change access/modify times
symlink make a symbolic link
readlink read contents of symbolic link
rename change name of file
lseek reposition within file
access determine accessibility
<sys/socket.h> standard definitions
getsockname get socket name
listen allow queuing of connections
accept accept a connection
connect connect to peer socket
socketpair create pair of connected sockets
sendto send data to named socket
send send data to connected socket
recvfrom receive data on unconnected socket
recv receive data on connected socket
sendmsg send gathered data and/or rights
recvmsg receive scattered data and/or rights
shutdown partially close full-duplex connection
getsockopt get socket option
setsockopt set socket option
.h 2.4 "Terminals, block and character devices
.h 2.5 "Processes and kernel hooks
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