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|
# SOME DESCRIPTIVE TITLE
# Copyright (C) YEAR Free Software Foundation, Inc.
# This file is distributed under the same license as the PACKAGE package.
# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
#
#, fuzzy
msgid ""
msgstr ""
"Project-Id-Version: PACKAGE VERSION\n"
"POT-Creation-Date: 2024-03-01 17:08+0100\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
"Language-Team: LANGUAGE <LL@li.org>\n"
"Language: \n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
#. type: TH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "SHMOP"
msgstr ""
#. type: TH
#: archlinux fedora-40 fedora-rawhide mageia-cauldron
#, no-wrap
msgid "2023-10-31"
msgstr ""
#. type: TH
#: archlinux fedora-40 fedora-rawhide mageia-cauldron
#, no-wrap
msgid "Linux man-pages 6.06"
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "NAME"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "shmat, shmdt - System V shared memory operations"
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "LIBRARY"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Standard C library (I<libc>, I<-lc>)"
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "SYNOPSIS"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<#include E<lt>sys/shm.hE<gt>>\n"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid ""
"B<void *shmat(int >I<shmid>B<, const void *_Nullable >I<shmaddr>B<, int >I<shmflg>B<);>\n"
"B<int shmdt(const void *>I<shmaddr>B<);>\n"
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "DESCRIPTION"
msgstr ""
#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "shmat()"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"B<shmat>() attaches the System\\ V shared memory segment identified by "
"I<shmid> to the address space of the calling process. The attaching address "
"is specified by I<shmaddr> with one of the following criteria:"
msgstr ""
#. type: IP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "\\[bu]"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"If I<shmaddr> is NULL, the system chooses a suitable (unused) page-aligned "
"address to attach the segment."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"If I<shmaddr> isn't NULL and B<SHM_RND> is specified in I<shmflg>, the "
"attach occurs at the address equal to I<shmaddr> rounded down to the nearest "
"multiple of B<SHMLBA>."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Otherwise, I<shmaddr> must be a page-aligned address at which the attach "
"occurs."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"In addition to B<SHM_RND>, the following flags may be specified in the "
"I<shmflg> bit-mask argument:"
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<SHM_EXEC> (Linux-specific; since Linux 2.6.9)"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Allow the contents of the segment to be executed. The caller must have "
"execute permission on the segment."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<SHM_RDONLY>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Attach the segment for read-only access. The process must have read "
"permission for the segment. If this flag is not specified, the segment is "
"attached for read and write access, and the process must have read and write "
"permission for the segment. There is no notion of a write-only shared "
"memory segment."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<SHM_REMAP> (Linux-specific)"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"This flag specifies that the mapping of the segment should replace any "
"existing mapping in the range starting at I<shmaddr> and continuing for the "
"size of the segment. (Normally, an B<EINVAL> error would result if a "
"mapping already exists in this address range.) In this case, I<shmaddr> "
"must not be NULL."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The B<brk>(2) value of the calling process is not altered by the attach. "
"The segment will automatically be detached at process exit. The same "
"segment may be attached as a read and as a read-write one, and more than "
"once, in the process's address space."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"A successful B<shmat>() call updates the members of the I<shmid_ds> "
"structure (see B<shmctl>(2)) associated with the shared memory segment as "
"follows:"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "I<shm_atime> is set to the current time."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "I<shm_lpid> is set to the process-ID of the calling process."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "I<shm_nattch> is incremented by one."
msgstr ""
#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "shmdt()"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"B<shmdt>() detaches the shared memory segment located at the address "
"specified by I<shmaddr> from the address space of the calling process. The "
"to-be-detached segment must be currently attached with I<shmaddr> equal to "
"the value returned by the attaching B<shmat>() call."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"On a successful B<shmdt>() call, the system updates the members of the "
"I<shmid_ds> structure associated with the shared memory segment as follows:"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "I<shm_dtime> is set to the current time."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"I<shm_nattch> is decremented by one. If it becomes 0 and the segment is "
"marked for deletion, the segment is deleted."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "RETURN VALUE"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"On success, B<shmat>() returns the address of the attached shared memory "
"segment; on error, I<(void\\ *)\\ -1> is returned, and I<errno> is set to "
"indicate the error."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"On success, B<shmdt>() returns 0; on error -1 is returned, and I<errno> is "
"set to indicate the error."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "ERRORS"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "B<shmat>() can fail with one of the following errors:"
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<EACCES>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The calling process does not have the required permissions for the requested "
"attach type, and does not have the B<CAP_IPC_OWNER> capability in the user "
"namespace that governs its IPC namespace."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<EIDRM>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "I<shmid> points to a removed identifier."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<EINVAL>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Invalid I<shmid> value, unaligned (i.e., not page-aligned and B<SHM_RND> was "
"not specified) or invalid I<shmaddr> value, or can't attach segment at "
"I<shmaddr>, or B<SHM_REMAP> was specified and I<shmaddr> was NULL."
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<ENOMEM>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Could not allocate memory for the descriptor or for the page tables."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "B<shmdt>() can fail with one of the following errors:"
msgstr ""
#. The following since Linux 2.6.17-rc1:
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"There is no shared memory segment attached at I<shmaddr>; or, I<shmaddr> is "
"not aligned on a page boundary."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "STANDARDS"
msgstr ""
#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
msgid "POSIX.1-2008."
msgstr ""
#. type: SH
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "HISTORY"
msgstr ""
#. SVr4 documents an additional error condition EMFILE.
#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
msgid "POSIX.1-2001, SVr4."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"In SVID 3 (or perhaps earlier), the type of the I<shmaddr> argument was "
"changed from I<char\\ *> into I<const void\\ *>, and the returned type of "
"B<shmat>() from I<char\\ *> into I<void\\ *>."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "NOTES"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"After a B<fork>(2), the child inherits the attached shared memory segments."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"After an B<execve>(2), all attached shared memory segments are detached from "
"the process."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Upon B<_exit>(2), all attached shared memory segments are detached from the "
"process."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Using B<shmat>() with I<shmaddr> equal to NULL is the preferred, portable "
"way of attaching a shared memory segment. Be aware that the shared memory "
"segment attached in this way may be attached at different addresses in "
"different processes. Therefore, any pointers maintained within the shared "
"memory must be made relative (typically to the starting address of the "
"segment), rather than absolute."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"On Linux, it is possible to attach a shared memory segment even if it is "
"already marked to be deleted. However, POSIX.1 does not specify this "
"behavior and many other implementations do not support it."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "The following system parameter affects B<shmat>():"
msgstr ""
#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<SHMLBA>"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Segment low boundary address multiple. When explicitly specifying an attach "
"address in a call to B<shmat>(), the caller should ensure that the address "
"is a multiple of this value. This is necessary on some architectures, in "
"order either to ensure good CPU cache performance or to ensure that "
"different attaches of the same segment have consistent views within the CPU "
"cache. B<SHMLBA> is normally some multiple of the system page size. (On "
"many Linux architectures, B<SHMLBA> is the same as the system page size.)"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The implementation places no intrinsic per-process limit on the number of "
"shared memory segments (B<SHMSEG>)."
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "EXAMPLES"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The two programs shown below exchange a string using a shared memory "
"segment. Further details about the programs are given below. First, we "
"show a shell session demonstrating their use."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"In one terminal window, we run the \"reader\" program, which creates a "
"System V shared memory segment and a System V semaphore set. The program "
"prints out the IDs of the created objects, and then waits for the semaphore "
"to change value."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid ""
"$ B<./svshm_string_read>\n"
"shmid = 1114194; semid = 15\n"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"In another terminal window, we run the \"writer\" program. The \"writer\" "
"program takes three command-line arguments: the IDs of the shared memory "
"segment and semaphore set created by the \"reader\", and a string. It "
"attaches the existing shared memory segment, copies the string to the shared "
"memory, and modifies the semaphore value."
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "$ B<./svshm_string_write 1114194 15 \\[aq]Hello, world\\[aq]>\n"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Returning to the terminal where the \"reader\" is running, we see that the "
"program has ceased waiting on the semaphore and has printed the string that "
"was copied into the shared memory segment by the writer:"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Hello, world\n"
msgstr ""
#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Program source: svshm_string.h"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The following header file is included by the \"reader\" and \"writer\" "
"programs:"
msgstr ""
#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-tumbleweed
#, no-wrap
msgid ""
"/* svshm_string.h\n"
"\\&\n"
" Licensed under GNU General Public License v2 or later.\n"
"*/\n"
"#include E<lt>sys/types.hE<gt>\n"
"#include E<lt>sys/ipc.hE<gt>\n"
"#include E<lt>sys/shm.hE<gt>\n"
"#include E<lt>sys/sem.hE<gt>\n"
"#include E<lt>stdio.hE<gt>\n"
"#include E<lt>stdlib.hE<gt>\n"
"#include E<lt>string.hE<gt>\n"
"\\&\n"
"#define errExit(msg) do { perror(msg); exit(EXIT_FAILURE); \\e\n"
" } while (0)\n"
"\\&\n"
"union semun { /* Used in calls to semctl() */\n"
" int val;\n"
" struct semid_ds * buf;\n"
" unsigned short * array;\n"
"#if defined(__linux__)\n"
" struct seminfo * __buf;\n"
"#endif\n"
"};\n"
"\\&\n"
"#define MEM_SIZE 4096\n"
msgstr ""
#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Program source: svshm_string_read.c"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The \"reader\" program creates a shared memory segment and a semaphore set "
"containing one semaphore. It then attaches the shared memory object into "
"its address space and initializes the semaphore value to 1. Finally, the "
"program waits for the semaphore value to become 0, and afterwards prints the "
"string that has been copied into the shared memory segment by the \"writer\"."
msgstr ""
#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-tumbleweed
#, no-wrap
msgid ""
"/* svshm_string_read.c\n"
"\\&\n"
" Licensed under GNU General Public License v2 or later.\n"
"*/\n"
"#include E<lt>stdio.hE<gt>\n"
"#include E<lt>stdlib.hE<gt>\n"
"#include E<lt>sys/ipc.hE<gt>\n"
"#include E<lt>sys/sem.hE<gt>\n"
"#include E<lt>sys/shm.hE<gt>\n"
"\\&\n"
"#include \"svshm_string.h\"\n"
"\\&\n"
"int\n"
"main(void)\n"
"{\n"
" int semid, shmid;\n"
" char *addr;\n"
" union semun arg, dummy;\n"
" struct sembuf sop;\n"
"\\&\n"
" /* Create shared memory and semaphore set containing one\n"
" semaphore. */\n"
"\\&\n"
" shmid = shmget(IPC_PRIVATE, MEM_SIZE, IPC_CREAT | 0600);\n"
" if (shmid == -1)\n"
" errExit(\"shmget\");\n"
"\\&\n"
" semid = semget(IPC_PRIVATE, 1, IPC_CREAT | 0600);\n"
" if (semid == -1)\n"
" errExit(\"semget\");\n"
"\\&\n"
" /* Attach shared memory into our address space. */\n"
"\\&\n"
" addr = shmat(shmid, NULL, SHM_RDONLY);\n"
" if (addr == (void *) -1)\n"
" errExit(\"shmat\");\n"
"\\&\n"
" /* Initialize semaphore 0 in set with value 1. */\n"
"\\&\n"
" arg.val = 1;\n"
" if (semctl(semid, 0, SETVAL, arg) == -1)\n"
" errExit(\"semctl\");\n"
"\\&\n"
" printf(\"shmid = %d; semid = %d\\en\", shmid, semid);\n"
"\\&\n"
" /* Wait for semaphore value to become 0. */\n"
"\\&\n"
" sop.sem_num = 0;\n"
" sop.sem_op = 0;\n"
" sop.sem_flg = 0;\n"
"\\&\n"
" if (semop(semid, &sop, 1) == -1)\n"
" errExit(\"semop\");\n"
"\\&\n"
" /* Print the string from shared memory. */\n"
"\\&\n"
" printf(\"%s\\en\", addr);\n"
"\\&\n"
" /* Remove shared memory and semaphore set. */\n"
"\\&\n"
" if (shmctl(shmid, IPC_RMID, NULL) == -1)\n"
" errExit(\"shmctl\");\n"
" if (semctl(semid, 0, IPC_RMID, dummy) == -1)\n"
" errExit(\"semctl\");\n"
"\\&\n"
" exit(EXIT_SUCCESS);\n"
"}\n"
msgstr ""
#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Program source: svshm_string_write.c"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The writer program takes three command-line arguments: the IDs of the shared "
"memory segment and semaphore set that have already been created by the "
"\"reader\", and a string. It attaches the shared memory segment into its "
"address space, and then decrements the semaphore value to 0 in order to "
"inform the \"reader\" that it can now examine the contents of the shared "
"memory."
msgstr ""
#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-tumbleweed
#, no-wrap
msgid ""
"/* svshm_string_write.c\n"
"\\&\n"
" Licensed under GNU General Public License v2 or later.\n"
"*/\n"
"#include E<lt>stdio.hE<gt>\n"
"#include E<lt>stdlib.hE<gt>\n"
"#include E<lt>string.hE<gt>\n"
"#include E<lt>sys/sem.hE<gt>\n"
"#include E<lt>sys/shm.hE<gt>\n"
"\\&\n"
"#include \"svshm_string.h\"\n"
"\\&\n"
"int\n"
"main(int argc, char *argv[])\n"
"{\n"
" int semid, shmid;\n"
" char *addr;\n"
" size_t len;\n"
" struct sembuf sop;\n"
"\\&\n"
" if (argc != 4) {\n"
" fprintf(stderr, \"Usage: %s shmid semid string\\en\", argv[0]);\n"
" exit(EXIT_FAILURE);\n"
" }\n"
"\\&\n"
" len = strlen(argv[3]) + 1; /* +1 to include trailing \\[aq]\\e0\\[aq] */\n"
" if (len E<gt> MEM_SIZE) {\n"
" fprintf(stderr, \"String is too big!\\en\");\n"
" exit(EXIT_FAILURE);\n"
" }\n"
"\\&\n"
" /* Get object IDs from command-line. */\n"
"\\&\n"
" shmid = atoi(argv[1]);\n"
" semid = atoi(argv[2]);\n"
"\\&\n"
" /* Attach shared memory into our address space and copy string\n"
" (including trailing null byte) into memory. */\n"
"\\&\n"
" addr = shmat(shmid, NULL, 0);\n"
" if (addr == (void *) -1)\n"
" errExit(\"shmat\");\n"
"\\&\n"
" memcpy(addr, argv[3], len);\n"
"\\&\n"
" /* Decrement semaphore to 0. */\n"
"\\&\n"
" sop.sem_num = 0;\n"
" sop.sem_op = -1;\n"
" sop.sem_flg = 0;\n"
"\\&\n"
" if (semop(semid, &sop, 1) == -1)\n"
" errExit(\"semop\");\n"
"\\&\n"
" exit(EXIT_SUCCESS);\n"
"}\n"
msgstr ""
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "SEE ALSO"
msgstr ""
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"B<brk>(2), B<mmap>(2), B<shmctl>(2), B<shmget>(2), B<capabilities>(7), "
"B<shm_overview>(7), B<sysvipc>(7)"
msgstr ""
#. type: TH
#: debian-bookworm
#, no-wrap
msgid "2023-02-05"
msgstr ""
#. type: TH
#: debian-bookworm
#, no-wrap
msgid "Linux man-pages 6.03"
msgstr ""
#. SVr4 documents an additional error condition EMFILE.
#. type: Plain text
#: debian-bookworm
msgid "POSIX.1-2001, POSIX.1-2008, SVr4."
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid "/* svshm_string.h\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" Licensed under GNU General Public License v2 or later.\n"
"*/\n"
"#include E<lt>sys/types.hE<gt>\n"
"#include E<lt>sys/ipc.hE<gt>\n"
"#include E<lt>sys/shm.hE<gt>\n"
"#include E<lt>sys/sem.hE<gt>\n"
"#include E<lt>stdio.hE<gt>\n"
"#include E<lt>stdlib.hE<gt>\n"
"#include E<lt>string.hE<gt>\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"#define errExit(msg) do { perror(msg); exit(EXIT_FAILURE); \\e\n"
" } while (0)\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"union semun { /* Used in calls to semctl() */\n"
" int val;\n"
" struct semid_ds * buf;\n"
" unsigned short * array;\n"
"#if defined(__linux__)\n"
" struct seminfo * __buf;\n"
"#endif\n"
"};\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid "#define MEM_SIZE 4096\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid "/* svshm_string_read.c\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" Licensed under GNU General Public License v2 or later.\n"
"*/\n"
"#include E<lt>stdio.hE<gt>\n"
"#include E<lt>stdlib.hE<gt>\n"
"#include E<lt>sys/ipc.hE<gt>\n"
"#include E<lt>sys/sem.hE<gt>\n"
"#include E<lt>sys/shm.hE<gt>\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid "#include \"svshm_string.h\"\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"int\n"
"main(void)\n"
"{\n"
" int semid, shmid;\n"
" char *addr;\n"
" union semun arg, dummy;\n"
" struct sembuf sop;\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" /* Create shared memory and semaphore set containing one\n"
" semaphore. */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" shmid = shmget(IPC_PRIVATE, MEM_SIZE, IPC_CREAT | 0600);\n"
" if (shmid == -1)\n"
" errExit(\"shmget\");\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" semid = semget(IPC_PRIVATE, 1, IPC_CREAT | 0600);\n"
" if (semid == -1)\n"
" errExit(\"semget\");\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " /* Attach shared memory into our address space. */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" addr = shmat(shmid, NULL, SHM_RDONLY);\n"
" if (addr == (void *) -1)\n"
" errExit(\"shmat\");\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " /* Initialize semaphore 0 in set with value 1. */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" arg.val = 1;\n"
" if (semctl(semid, 0, SETVAL, arg) == -1)\n"
" errExit(\"semctl\");\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " printf(\"shmid = %d; semid = %d\\en\", shmid, semid);\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " /* Wait for semaphore value to become 0. */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" sop.sem_num = 0;\n"
" sop.sem_op = 0;\n"
" sop.sem_flg = 0;\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" if (semop(semid, &sop, 1) == -1)\n"
" errExit(\"semop\");\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " /* Print the string from shared memory. */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " printf(\"%s\\en\", addr);\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " /* Remove shared memory and semaphore set. */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" if (shmctl(shmid, IPC_RMID, NULL) == -1)\n"
" errExit(\"shmctl\");\n"
" if (semctl(semid, 0, IPC_RMID, dummy) == -1)\n"
" errExit(\"semctl\");\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" exit(EXIT_SUCCESS);\n"
"}\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid "/* svshm_string_write.c\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" Licensed under GNU General Public License v2 or later.\n"
"*/\n"
"#include E<lt>stdio.hE<gt>\n"
"#include E<lt>stdlib.hE<gt>\n"
"#include E<lt>string.hE<gt>\n"
"#include E<lt>sys/sem.hE<gt>\n"
"#include E<lt>sys/shm.hE<gt>\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"int\n"
"main(int argc, char *argv[])\n"
"{\n"
" int semid, shmid;\n"
" char *addr;\n"
" size_t len;\n"
" struct sembuf sop;\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" if (argc != 4) {\n"
" fprintf(stderr, \"Usage: %s shmid semid string\\en\", argv[0]);\n"
" exit(EXIT_FAILURE);\n"
" }\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" len = strlen(argv[3]) + 1; /* +1 to include trailing \\[aq]\\e0\\[aq] */\n"
" if (len E<gt> MEM_SIZE) {\n"
" fprintf(stderr, \"String is too big!\\en\");\n"
" exit(EXIT_FAILURE);\n"
" }\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " /* Get object IDs from command-line. */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" shmid = atoi(argv[1]);\n"
" semid = atoi(argv[2]);\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" /* Attach shared memory into our address space and copy string\n"
" (including trailing null byte) into memory. */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" addr = shmat(shmid, NULL, 0);\n"
" if (addr == (void *) -1)\n"
" errExit(\"shmat\");\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " memcpy(addr, argv[3], len);\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid " /* Decrement semaphore to 0. */\n"
msgstr ""
#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
" sop.sem_num = 0;\n"
" sop.sem_op = -1;\n"
" sop.sem_flg = 0;\n"
msgstr ""
#. type: TH
#: debian-unstable opensuse-tumbleweed
#, no-wrap
msgid "2023-05-03"
msgstr ""
#. type: TH
#: debian-unstable opensuse-tumbleweed
#, no-wrap
msgid "Linux man-pages 6.05.01"
msgstr ""
#. type: TH
#: opensuse-leap-15-6
#, no-wrap
msgid "2023-03-30"
msgstr ""
#. type: TH
#: opensuse-leap-15-6
#, no-wrap
msgid "Linux man-pages 6.04"
msgstr ""
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