1 /* Copyright (C) 2002 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, see 16 <http://www.gnu.org/licenses/>. */ 17 18 #ifndef _SYS_MSG_H 19 # error "Never use <bits/msq.h> directly; include <sys/msg.h> instead." 20 #endif 21 22 #include <bits/types.h> 23 #include <bits/wordsize.h> 24 25 /* Define options for message queue functions. */ 26 #define MSG_NOERROR 010000 /* no error if message is too big */ 27 #ifdef __USE_GNU 28 # define MSG_EXCEPT 020000 /* recv any msg except of specified type */ 29 #endif 30 31 /* Types used in the structure definition. */ 32 typedef unsigned long int msgqnum_t; 33 typedef unsigned long int msglen_t; 34 35 36 /* Structure of record for one message inside the kernel. 37 The type `struct msg' is opaque. */ 38 #if (__WORDSIZE == 32) && defined(__MIPSEL__) 39 struct msqid_ds 40 { 41 struct ipc_perm msg_perm; /* structure describing operation permission */ 42 # if defined(__UCLIBC_USE_TIME64__) 43 unsigned long msg_stime_internal_1; /* time of last msgsnd command */ 44 unsigned long msg_stime_internal_2; 45 unsigned long msg_rtime_internal_1; /* time of last msgrcv command */ 46 unsigned long msg_rtime_internal_2; 47 unsigned long msg_ctime_internal_1; /* time of last change */ 48 unsigned long msg_ctime_internal_2; 49 # else 50 __time_t msg_stime; 51 unsigned long int __uclibc_unused1; 52 __time_t msg_rtime; 53 unsigned long int __uclibc_unused2; 54 __time_t msg_ctime; 55 unsigned long int __uclibc_unused3; 56 # endif 57 unsigned long int __msg_cbytes; /* current number of bytes on queue */ 58 msgqnum_t msg_qnum; /* number of messages currently on queue */ 59 msglen_t msg_qbytes; /* max number of bytes allowed on queue */ 60 __pid_t msg_lspid; /* pid of last msgsnd() */ 61 __pid_t msg_lrpid; /* pid of last msgrcv() */ 62 unsigned long int __uclibc_unused4; 63 unsigned long int __uclibc_unused5; 64 # if defined(__UCLIBC_USE_TIME64__) 65 __time_t msg_stime; 66 __time_t msg_rtime; 67 __time_t msg_ctime; 68 # endif 69 }; 70 71 #elif (__WORDSIZE == 32) && defined(__MIPSEB__) 72 struct msqid_ds 73 { 74 struct ipc_perm msg_perm; /* structure describing operation permission */ 75 # if defined(__UCLIBC_USE_TIME64__) 76 unsigned long msg_stime_internal_2; /* time of last msgsnd command */ 77 unsigned long msg_stime_internal_1; 78 unsigned long msg_rtime_internal_2; /* time of last msgrcv command */ 79 unsigned long msg_rtime_internal_1; 80 unsigned long msg_ctime_internal_2; /* time of last change */ 81 unsigned long msg_ctime_internal_1; 82 # else 83 unsigned long int __uclibc_unused1; 84 __time_t msg_stime; 85 unsigned long int __uclibc_unused2; 86 __time_t msg_rtime; 87 unsigned long int __uclibc_unused3; 88 __time_t msg_ctime; 89 # endif 90 unsigned long int __msg_cbytes; /* current number of bytes on queue */ 91 msgqnum_t msg_qnum; /* number of messages currently on queue */ 92 msglen_t msg_qbytes; /* max number of bytes allowed on queue */ 93 __pid_t msg_lspid; /* pid of last msgsnd() */ 94 __pid_t msg_lrpid; /* pid of last msgrcv() */ 95 unsigned long int __uclibc_unused4; 96 unsigned long int __uclibc_unused5; 97 # if defined(__UCLIBC_USE_TIME64__) 98 __time_t msg_stime; 99 __time_t msg_rtime; 100 __time_t msg_ctime; 101 # endif 102 }; 103 104 #else 105 106 struct msqid_ds 107 { 108 struct ipc_perm msg_perm; /* structure describing operation permission */ 109 __time_t msg_stime; /* time of last msgsnd command */ 110 __time_t msg_rtime; /* time of last msgrcv command */ 111 __time_t msg_ctime; /* time of last change */ 112 unsigned long int __msg_cbytes; /* current number of bytes on queue */ 113 msgqnum_t msg_qnum; /* number of messages currently on queue */ 114 msglen_t msg_qbytes; /* max number of bytes allowed on queue */ 115 __pid_t msg_lspid; /* pid of last msgsnd() */ 116 __pid_t msg_lrpid; /* pid of last msgrcv() */ 117 unsigned long int __uclibc_unused4; 118 unsigned long int __uclibc_unused5; 119 }; 120 121 #endif 122 123 #ifdef __USE_MISC 124 125 # define msg_cbytes __msg_cbytes 126 127 /* ipcs ctl commands */ 128 # define MSG_STAT 11 129 # define MSG_INFO 12 130 131 /* buffer for msgctl calls IPC_INFO, MSG_INFO */ 132 struct msginfo 133 { 134 int msgpool; 135 int msgmap; 136 int msgmax; 137 int msgmnb; 138 int msgmni; 139 int msgssz; 140 int msgtql; 141 unsigned short int msgseg; 142 }; 143 144 #endif /* __USE_MISC */ 145