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1 | /* Copyright (C) 1995-2014 Free Software Foundation, Inc. | |
2 | This file is part of the GNU C Library. | |
3 | Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <errno.h> | |
20 | #include <sys/msg.h> | |
21 | #include <ipc_priv.h> | |
22 | ||
23 | #include <sysdep.h> | |
24 | #include <string.h> | |
25 | #include <sys/syscall.h> | |
26 | ||
27 | #include <shlib-compat.h> | |
28 | ||
29 | struct __old_msqid_ds | |
30 | { | |
31 | struct __old_ipc_perm msg_perm; /* structure describing operation permission */ | |
32 | struct msg *__msg_first; /* pointer to first message on queue */ | |
33 | struct msg *__msg_last; /* pointer to last message on queue */ | |
34 | __time_t msg_stime; /* time of last msgsnd command */ | |
35 | __time_t msg_rtime; /* time of last msgrcv command */ | |
36 | __time_t msg_ctime; /* time of last change */ | |
37 | struct wait_queue *__wwait; /* ??? */ | |
38 | struct wait_queue *__rwait; /* ??? */ | |
39 | unsigned short int __msg_cbytes; /* current number of bytes on queue */ | |
40 | unsigned short int msg_qnum; /* number of messages currently on queue */ | |
41 | unsigned short int msg_qbytes; /* max number of bytes allowed on queue */ | |
42 | __ipc_pid_t msg_lspid; /* pid of last msgsnd() */ | |
43 | __ipc_pid_t msg_lrpid; /* pid of last msgrcv() */ | |
44 | }; | |
45 | ||
46 | /* Allows to control internal state and destruction of message queue | |
47 | objects. */ | |
48 | #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2) | |
49 | int __old_msgctl (int, int, struct __old_msqid_ds *); | |
50 | #endif | |
51 | int __new_msgctl (int, int, struct msqid_ds *); | |
52 | ||
53 | #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2) | |
54 | int | |
55 | attribute_compat_text_section | |
56 | __old_msgctl (int msqid, int cmd, struct __old_msqid_ds *buf) | |
57 | { | |
58 | return INLINE_SYSCALL (ipc, 5, IPCOP_msgctl, msqid, cmd, 0, buf); | |
59 | } | |
60 | compat_symbol (libc, __old_msgctl, msgctl, GLIBC_2_0); | |
61 | #endif | |
62 | ||
63 | int | |
64 | __new_msgctl (int msqid, int cmd, struct msqid_ds *buf) | |
65 | { | |
66 | return INLINE_SYSCALL (ipc, 5, IPCOP_msgctl, | |
67 | msqid, cmd | __IPC_64, 0, buf); | |
68 | } | |
69 | ||
70 | versioned_symbol (libc, __new_msgctl, msgctl, GLIBC_2_2); |