Last change
on this file since 444 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
638 bytes
|
Line | |
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1 | /* Copyright 2002, Red Hat Inc. */ |
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2 | |
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3 | #include <mqueue.h> |
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4 | #include <errno.h> |
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5 | #include <sys/sem.h> |
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6 | #define _LIBC 1 |
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7 | #include <sys/lock.h> |
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8 | #undef _LIBC |
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9 | |
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10 | #include "mqlocal.h" |
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11 | |
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12 | int |
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13 | mq_close (mqd_t msgid) |
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14 | { |
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15 | struct libc_mq *info; |
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16 | struct sembuf sb0 = {0, -1, 0}; |
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17 | int rc; |
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18 | int semid; |
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19 | |
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20 | info = __find_mq (msgid); |
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21 | |
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22 | if (info == NULL) |
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23 | { |
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24 | errno = EBADF; |
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25 | return -1; |
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26 | } |
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27 | |
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28 | /* lock message queue */ |
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29 | semid = info->semid; |
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30 | rc = semop (semid, &sb0, 1); |
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31 | |
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32 | if (rc == 0) |
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33 | { |
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34 | __cleanup_mq (msgid); |
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35 | |
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36 | /* unlock message queue */ |
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37 | sb0.sem_op = 1; |
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38 | semop (semid, &sb0, 1); |
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39 | } |
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40 | |
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41 | return rc; |
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42 | } |
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43 | |
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44 | |
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45 | |
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46 | |
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47 | |
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48 | |
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