diff options
| author | Alejandro Colomar <alx@kernel.org> | 2024-04-26 15:06:49 +0200 |
|---|---|---|
| committer | Alejandro Colomar <alx@kernel.org> | 2024-05-02 01:24:19 +0200 |
| commit | dcde2f70372b49ec43efc5db864c9ff585d0a2dd (patch) | |
| tree | 78b9b7425130e4a5858e4c01a524d802423879ed /man/man7/sysvipc.7 | |
| parent | 12aca537ce78a41bbcdaf485209691e10f8002d7 (diff) | |
| download | man-pages-dcde2f70372b49ec43efc5db864c9ff585d0a2dd.tar.gz | |
man/, share/mk/: Move man*/ to man/
This is a scripted change:
$ mkdir man/;
$ mv man* man/;
$ ln -st . man/man*;
$ find share/mk/ -type f \
| xargs grep -l '^MANDIR *:=' \
| xargs sed -i '/^MANDIR *:=/s,$,/man,';
$ find share/mk/dist/ -type f \
| xargs grep -l man \
| xargs sed -i 's,man%,man/%,g';
Link: <https://lore.kernel.org/linux-man/YxcV4h+Xn7cd6+q2@pevik/T/>
Cc: Petr Vorel <pvorel@suse.cz>
Cc: Jakub Wilk <jwilk@jwilk.net>
Cc: Stefan Puiu <stefan.puiu@gmail.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
Diffstat (limited to 'man/man7/sysvipc.7')
| -rw-r--r-- | man/man7/sysvipc.7 | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/man/man7/sysvipc.7 b/man/man7/sysvipc.7 new file mode 100644 index 0000000000..460ff0f04a --- /dev/null +++ b/man/man7/sysvipc.7 @@ -0,0 +1,99 @@ +.\" Copyright 2020 Michael Kerrisk <mtk.manpages@gmail.com> +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.TH sysvipc 7 (date) "Linux man-pages (unreleased)" +.SH NAME +sysvipc \- System V interprocess communication mechanisms +.SH DESCRIPTION +System V IPC is the name given to three interprocess +communication mechanisms that are widely available on UNIX systems: +message queues, semaphore, and shared memory. +.\" +.SS Message queues +System V message queues allow data to be exchanged in units called messages. +Each message can have an associated priority. +POSIX message queues provide an alternative API for achieving the same result; +see +.BR mq_overview (7). +.P +The System V message queue API consists of the following system calls: +.TP +.BR msgget (2) +Create a new message queue or obtain the ID of an existing message queue. +This call returns an identifier that is used in the remaining APIs. +.TP +.BR msgsnd (2) +Add a message to a queue. +.TP +.BR msgrcv (2) +Remove a message from a queue. +.TP +.BR msgctl (2) +Perform various control operations on a queue, including deletion. +.\" +.SS Semaphore sets +System V semaphores allow processes to synchronize their actions. +System V semaphores are allocated in groups called sets; +each semaphore in a set is a counting semaphore. +POSIX semaphores provide an alternative API for achieving the same result; +see +.BR sem_overview (7). +.P +The System V semaphore API consists of the following system calls: +.TP +.BR semget (2) +Create a new set or obtain the ID of an existing set. +This call returns an identifier that is used in the remaining APIs. +.TP +.BR semop (2) +Perform operations on the semaphores in a set. +.TP +.BR semctl (2) +Perform various control operations on a set, including deletion. +.\" +.SS Shared memory segments +System V shared memory allows processes to share a region a memory +(a "segment"). +POSIX shared memory is an alternative API for achieving the same result; see +.BR shm_overview (7). +.P +The System V shared memory API consists of the following system calls: +.TP +.BR shmget (2) +Create a new segment or obtain the ID of an existing segment. +This call returns an identifier that is used in the remaining APIs. +.TP +.BR shmat (2) +Attach an existing shared memory object into the calling process's +address space. +.TP +.BR shmdt (2) +Detach a segment from the calling process's address space. +.TP +.BR shmctl (2) +Perform various control operations on a segment, including deletion. +.\" +.SS IPC namespaces +For a discussion of the interaction of System V IPC objects and +IPC namespaces, see +.BR ipc_namespaces (7). +.SH SEE ALSO +.BR ipcmk (1), +.BR ipcrm (1), +.BR ipcs (1), +.BR lsipc (1), +.BR ipc (2), +.BR msgctl (2), +.BR msgget (2), +.BR msgrcv (2), +.BR msgsnd (2), +.BR semctl (2), +.BR semget (2), +.BR semop (2), +.BR shmat (2), +.BR shmctl (2), +.BR shmdt (2), +.BR shmget (2), +.BR ftok (3), +.BR ipc_namespaces (7) |