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80a99f39 | 1 | '\" t |
c11b1abf | 2 | .\" Copyright (C) 2006 Michael Kerrisk <mtk.manpages@gmail.com> |
80a99f39 | 3 | .\" |
93015253 | 4 | .\" %%%LICENSE_START(VERBATIM) |
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5 | .\" Permission is granted to make and distribute verbatim copies of this |
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12 | .\" permission notice identical to this one. | |
c13182ef | 13 | .\" |
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14 | .\" Since the Linux kernel and libraries are constantly changing, this |
15 | .\" manual page may be incorrect or out-of-date. The author(s) assume no | |
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10d76543 MK |
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19 | .\" which is licensed free of charge, as they might when working | |
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c13182ef | 21 | .\" |
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22 | .\" Formatted or processed versions of this manual, if unaccompanied by |
23 | .\" the source, must acknowledge the copyright and authors of this work. | |
4b72fb64 | 24 | .\" %%%LICENSE_END |
80a99f39 | 25 | .\" |
4b8c67d9 | 26 | .TH MQ_CLOSE 3 2017-09-15 "Linux" "Linux Programmer's Manual" |
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27 | .SH NAME |
28 | mq_close \- close a message queue descriptor | |
29 | .SH SYNOPSIS | |
30 | .nf | |
31 | .B #include <mqueue.h> | |
68e4db0a | 32 | .PP |
c9e83f06 | 33 | .BI "int mq_close(mqd_t " mqdes ); |
80a99f39 | 34 | .fi |
68e4db0a | 35 | .PP |
1b2d3fca | 36 | Link with \fI\-lrt\fP. |
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37 | .SH DESCRIPTION |
38 | .BR mq_close () | |
39 | closes the message queue descriptor | |
40 | .IR mqdes . | |
847e0d88 | 41 | .PP |
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42 | If the calling process has attached a notification request (see |
43 | .RB ( mq_notify (3)) | |
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44 | to this message queue via |
45 | .IR mqdes , | |
c13182ef | 46 | then this request is removed, |
80a99f39 | 47 | and another process can now attach a notification request. |
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48 | .SH RETURN VALUE |
49 | On success | |
50 | .BR mq_close () | |
51 | returns 0; on error, \-1 is returned, with | |
c13182ef | 52 | .I errno |
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53 | set to indicate the error. |
54 | .SH ERRORS | |
55 | .TP | |
56 | .B EBADF | |
1cd9229c | 57 | The message queue descriptor specified in |
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58 | .I mqdes |
59 | is invalid. | |
0e7d2e7f | 60 | .SH ATTRIBUTES |
2f75eb08 PH |
61 | For an explanation of the terms used in this section, see |
62 | .BR attributes (7). | |
63 | .TS | |
64 | allbox; | |
65 | lb lb lb | |
66 | l l l. | |
67 | Interface Attribute Value | |
68 | T{ | |
0e7d2e7f | 69 | .BR mq_close () |
2f75eb08 PH |
70 | T} Thread safety MT-Safe |
71 | .TE | |
80a99f39 | 72 | .SH CONFORMING TO |
ea5545db | 73 | POSIX.1-2001, POSIX.1-2008. |
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74 | .SH NOTES |
75 | All open message queues are automatically closed on process termination, | |
76 | or upon | |
77 | .BR execve (2). | |
47297adb | 78 | .SH SEE ALSO |
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79 | .BR mq_getattr (3), |
80 | .BR mq_notify (3), | |
81 | .BR mq_open (3), | |
82 | .BR mq_receive (3), | |
83 | .BR mq_send (3), | |
84 | .BR mq_unlink (3), | |
85 | .BR mq_overview (7) |