Merging upstream version 6.8.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 0 insertions, 163 deletions

diff --git a/man3/mq_receive.3 b/man3/mq_receive.3
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-'\" t
-.\" Copyright (C) 2006 Michael Kerrisk <mtk.manpages@gmail.com>
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.TH mq_receive 3 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-mq_receive, mq_timedreceive \- receive a message from a message queue
-.SH LIBRARY
-Real-time library
-.RI ( librt ", " \-lrt )
-.SH SYNOPSIS
-.nf
-.B #include <mqueue.h>
-.P
-.BI "ssize_t mq_receive(mqd_t " mqdes ", char " msg_ptr [. msg_len ],
-.BI "                   size_t " msg_len ", unsigned int *" msg_prio );
-.P
-.B #include <time.h>
-.B #include <mqueue.h>
-.P
-.BI "ssize_t mq_timedreceive(mqd_t " mqdes ", \
-char *restrict " msg_ptr [. msg_len ],
-.BI "                   size_t " msg_len ", unsigned int *restrict " msg_prio ,
-.BI "                   const struct timespec *restrict " abs_timeout );
-.fi
-.P
-.ad l
-.RS -4
-Feature Test Macro Requirements for glibc (see
-.BR feature_test_macros (7)):
-.RE
-.P
-.BR mq_timedreceive ():
-.nf
-    _POSIX_C_SOURCE >= 200112L
-.fi
-.SH DESCRIPTION
-.BR mq_receive ()
-removes the oldest message with the highest priority from
-the message queue referred to by the message queue descriptor
-.IR mqdes ,
-and places it in the buffer pointed to by
-.IR msg_ptr .
-The
-.I msg_len
-argument specifies the size of the buffer pointed to by
-.IR msg_ptr ;
-this must be greater than or equal to the
-.I mq_msgsize
-attribute of the queue (see
-.BR mq_getattr (3)).
-If
-.I msg_prio
-is not NULL, then the buffer to which it points is used
-to return the priority associated with the received message.
-.P
-If the queue is empty, then, by default,
-.BR mq_receive ()
-blocks until a message becomes available,
-or the call is interrupted by a signal handler.
-If the
-.B O_NONBLOCK
-flag is enabled for the message queue description,
-then the call instead fails immediately with the error
-.BR EAGAIN .
-.P
-.BR mq_timedreceive ()
-behaves just like
-.BR mq_receive (),
-except that if the queue is empty and the
-.B O_NONBLOCK
-flag is not enabled for the message queue description, then
-.I abs_timeout
-points to a structure which specifies how long the call will block.
-This value is an absolute timeout in seconds and nanoseconds
-since the Epoch, 1970-01-01 00:00:00 +0000 (UTC),
-specified in a
-.BR timespec (3)
-structure.
-.P
-If no message is available,
-and the timeout has already expired by the time of the call,
-.BR mq_timedreceive ()
-returns immediately.
-.SH RETURN VALUE
-On success,
-.BR mq_receive ()
-and
-.BR mq_timedreceive ()
-return the number of bytes in the received message;
-on error, \-1 is returned, with
-.I errno
-set to indicate the error.
-.SH ERRORS
-.TP
-.B EAGAIN
-The queue was empty, and the
-.B O_NONBLOCK
-flag was set for the message queue description referred to by
-.IR mqdes .
-.TP
-.B EBADF
-The descriptor specified in
-.I mqdes
-was invalid or not opened for reading.
-.TP
-.B EINTR
-The call was interrupted by a signal handler; see
-.BR signal (7).
-.TP
-.B EINVAL
-The call would have blocked, and
-.I abs_timeout
-was invalid, either because
-.I tv_sec
-was less than zero, or because
-.I tv_nsec
-was less than zero or greater than 1000 million.
-.TP
-.B EMSGSIZE
-.I msg_len
-was less than the
-.I mq_msgsize
-attribute of the message queue.
-.TP
-.B ETIMEDOUT
-The call timed out before a message could be transferred.
-.SH ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.TS
-allbox;
-lbx lb lb
-l l l.
-Interface	Attribute	Value
-T{
-.na
-.nh
-.BR mq_receive (),
-.BR mq_timedreceive ()
-T}	Thread safety	MT-Safe
-.TE
-.SH VERSIONS
-On Linux,
-.BR mq_timedreceive ()
-is a system call, and
-.BR mq_receive ()
-is a library function layered on top of that system call.
-.SH STANDARDS
-POSIX.1-2008.
-.SH HISTORY
-POSIX.1-2001.
-.SH SEE ALSO
-.BR mq_close (3),
-.BR mq_getattr (3),
-.BR mq_notify (3),
-.BR mq_open (3),
-.BR mq_send (3),
-.BR mq_unlink (3),
-.BR timespec (3),
-.BR mq_overview (7),
-.BR time (7)