| /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ | |
| #ifndef __ASM_GENERIC_MSGBUF_H | |
| #define __ASM_GENERIC_MSGBUF_H | |
| #include <asm/bitsperlong.h> | |
| #include <asm/ipcbuf.h> | |
| /* | |
| * generic msqid64_ds structure. | |
| * | |
| * Note extra padding because this structure is passed back and forth | |
| * between kernel and user space. | |
| * | |
| * msqid64_ds was originally meant to be architecture specific, but | |
| * everyone just ended up making identical copies without specific | |
| * optimizations, so we may just as well all use the same one. | |
| * | |
| * 64 bit architectures use a 64-bit long time field here, while | |
| * 32 bit architectures have a pair of unsigned long values. | |
| * On big-endian systems, the lower half is in the wrong place. | |
| * | |
| * Pad space is left for: | |
| * - 2 miscellaneous 32-bit values | |
| */ | |
| struct msqid64_ds { | |
| struct ipc64_perm msg_perm; | |
| #if __BITS_PER_LONG == 64 | |
| long msg_stime; /* last msgsnd time */ | |
| long msg_rtime; /* last msgrcv time */ | |
| long msg_ctime; /* last change time */ | |
| #else | |
| unsigned long msg_stime; /* last msgsnd time */ | |
| unsigned long msg_stime_high; | |
| unsigned long msg_rtime; /* last msgrcv time */ | |
| unsigned long msg_rtime_high; | |
| unsigned long msg_ctime; /* last change time */ | |
| unsigned long msg_ctime_high; | |
| #endif | |
| unsigned long msg_cbytes; /* current number of bytes on queue */ | |
| unsigned long msg_qnum; /* number of messages in queue */ | |
| unsigned long msg_qbytes; /* max number of bytes on queue */ | |
| __kernel_pid_t msg_lspid; /* pid of last msgsnd */ | |
| __kernel_pid_t msg_lrpid; /* last receive pid */ | |
| unsigned long __unused4; | |
| unsigned long __unused5; | |
| }; | |
| #endif /* __ASM_GENERIC_MSGBUF_H */ |