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Userspace cannot compile <asm/msgbuf.h> due to some missing type
definitions. For example, building it for x86 fails as follows:
CC usr/include/asm/msgbuf.h.s
In file included from usr/include/asm/msgbuf.h:6:0,
from <command-line>:32:
usr/include/asm-generic/msgbuf.h:25:20: error: field `msg_perm' has incomplete type
struct ipc64_perm msg_perm;
^~~~~~~~
usr/include/asm-generic/msgbuf.h:27:2: error: unknown type name `__kernel_time_t'
__kernel_time_t msg_stime; /* last msgsnd time */
^~~~~~~~~~~~~~~
usr/include/asm-generic/msgbuf.h:28:2: error: unknown type name `__kernel_time_t'
__kernel_time_t msg_rtime; /* last msgrcv time */
^~~~~~~~~~~~~~~
usr/include/asm-generic/msgbuf.h:29:2: error: unknown type name `__kernel_time_t'
__kernel_time_t msg_ctime; /* last change time */
^~~~~~~~~~~~~~~
usr/include/asm-generic/msgbuf.h:41:2: error: unknown type name `__kernel_pid_t'
__kernel_pid_t msg_lspid; /* pid of last msgsnd */
^~~~~~~~~~~~~~
usr/include/asm-generic/msgbuf.h:42:2: error: unknown type name `__kernel_pid_t'
__kernel_pid_t msg_lrpid; /* last receive pid */
^~~~~~~~~~~~~~
It is just a matter of missing include directive.
Include <asm/ipcbuf.h> to make it self-contained, and add it to
the compile-test coverage.
Link: http://lkml.kernel.org/r/20191030063855.9989-2-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef __ASM_GENERIC_MSGBUF_H
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#define __ASM_GENERIC_MSGBUF_H
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#include <asm/bitsperlong.h>
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#include <asm/ipcbuf.h>
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/*
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* generic msqid64_ds structure.
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*
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* Note extra padding because this structure is passed back and forth
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* between kernel and user space.
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*
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* msqid64_ds was originally meant to be architecture specific, but
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* everyone just ended up making identical copies without specific
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* optimizations, so we may just as well all use the same one.
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*
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* 64 bit architectures use a 64-bit long time field here, while
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* 32 bit architectures have a pair of unsigned long values.
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* On big-endian systems, the lower half is in the wrong place.
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*
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* Pad space is left for:
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* - 2 miscellaneous 32-bit values
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*/
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struct msqid64_ds {
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struct ipc64_perm msg_perm;
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#if __BITS_PER_LONG == 64
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long msg_stime; /* last msgsnd time */
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long msg_rtime; /* last msgrcv time */
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long msg_ctime; /* last change time */
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#else
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unsigned long msg_stime; /* last msgsnd time */
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unsigned long msg_stime_high;
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unsigned long msg_rtime; /* last msgrcv time */
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unsigned long msg_rtime_high;
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unsigned long msg_ctime; /* last change time */
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unsigned long msg_ctime_high;
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#endif
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unsigned long msg_cbytes; /* current number of bytes on queue */
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unsigned long msg_qnum; /* number of messages in queue */
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unsigned long msg_qbytes; /* max number of bytes on queue */
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__kernel_pid_t msg_lspid; /* pid of last msgsnd */
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__kernel_pid_t msg_lrpid; /* last receive pid */
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unsigned long __unused4;
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unsigned long __unused5;
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};
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#endif /* __ASM_GENERIC_MSGBUF_H */
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