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authorArnd Bergmann <arnd@arndb.de>2009-05-13 18:56:26 -0400
committerArnd Bergmann <arnd@klappe2.(none)>2009-06-11 15:02:15 -0400
commit2864d32be31a20a4617e37a857dd9915a57e2efb (patch)
treef1ed8d5c0bad71fac98b5d255d6f6c9eca0e79f4 /include
parentc31ae4bb4a9fa4606a74c0a4fb61b74f804e861e (diff)
asm-generic: add generic sysv ipc headers
The ipc64 data structures were originally meant to be architecture specific so that each architecture could add their own optimizations for padding. In the end, most of them just copied the x86 version, and most got that wrong. UClibc expects the x86 anyway, so we might just declare that the default and get rid of the extra copies. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'include')
-rw-r--r--include/asm-generic/Kbuild5
-rw-r--r--include/asm-generic/ipcbuf.h34
-rw-r--r--include/asm-generic/msgbuf.h47
-rw-r--r--include/asm-generic/sembuf.h38
-rw-r--r--include/asm-generic/shmbuf.h59
-rw-r--r--include/asm-generic/shmparam.h6
6 files changed, 189 insertions, 0 deletions
diff --git a/include/asm-generic/Kbuild b/include/asm-generic/Kbuild
index cbb437875f5c..fd7a9c49df4e 100644
--- a/include/asm-generic/Kbuild
+++ b/include/asm-generic/Kbuild
@@ -3,8 +3,13 @@ header-y += errno-base.h
3header-y += errno.h 3header-y += errno.h
4header-y += fcntl.h 4header-y += fcntl.h
5header-y += ioctl.h 5header-y += ioctl.h
6header-y += ipcbuf.h
6header-y += mman-common.h 7header-y += mman-common.h
8header-y += msgbuf.h
7header-y += poll.h 9header-y += poll.h
10header-y += sembuf.h
11header-y += shmbuf.h
12header-y += shmparam.h
8header-y += signal-defs.h 13header-y += signal-defs.h
9header-y += statfs.h 14header-y += statfs.h
10 15
diff --git a/include/asm-generic/ipcbuf.h b/include/asm-generic/ipcbuf.h
new file mode 100644
index 000000000000..76982b2a1b58
--- /dev/null
+++ b/include/asm-generic/ipcbuf.h
@@ -0,0 +1,34 @@
1#ifndef __ASM_GENERIC_IPCBUF_H
2#define __ASM_GENERIC_IPCBUF_H
3
4/*
5 * The generic ipc64_perm structure:
6 * Note extra padding because this structure is passed back and forth
7 * between kernel and user space.
8 *
9 * ipc64_perm was originally meant to be architecture specific, but
10 * everyone just ended up making identical copies without specific
11 * optimizations, so we may just as well all use the same one.
12 *
13 * Pad space is left for:
14 * - 32-bit mode_t on architectures that only had 16 bit
15 * - 32-bit seq
16 * - 2 miscellaneous 32-bit values
17 */
18
19struct ipc64_perm {
20 __kernel_key_t key;
21 __kernel_uid32_t uid;
22 __kernel_gid32_t gid;
23 __kernel_uid32_t cuid;
24 __kernel_gid32_t cgid;
25 __kernel_mode_t mode;
26 /* pad if mode_t is u16: */
27 unsigned char __pad1[4 - sizeof(__kernel_mode_t)];
28 unsigned short seq;
29 unsigned short __pad2;
30 unsigned long __unused1;
31 unsigned long __unused2;
32};
33
34#endif /* __ASM_GENERIC_IPCBUF_H */
diff --git a/include/asm-generic/msgbuf.h b/include/asm-generic/msgbuf.h
new file mode 100644
index 000000000000..aec850d9159e
--- /dev/null
+++ b/include/asm-generic/msgbuf.h
@@ -0,0 +1,47 @@
1#ifndef __ASM_GENERIC_MSGBUF_H
2#define __ASM_GENERIC_MSGBUF_H
3
4#include <asm/bitsperlong.h>
5/*
6 * generic msqid64_ds structure.
7 *
8 * Note extra padding because this structure is passed back and forth
9 * between kernel and user space.
10 *
11 * msqid64_ds was originally meant to be architecture specific, but
12 * everyone just ended up making identical copies without specific
13 * optimizations, so we may just as well all use the same one.
14 *
15 * 64 bit architectures typically define a 64 bit __kernel_time_t,
16 * so they do not need the first three padding words.
17 * On big-endian systems, the padding is in the wrong place.
18 *
19 * Pad space is left for:
20 * - 64-bit time_t to solve y2038 problem
21 * - 2 miscellaneous 32-bit values
22 */
23
24struct msqid64_ds {
25 struct ipc64_perm msg_perm;
26 __kernel_time_t msg_stime; /* last msgsnd time */
27#if __BITS_PER_LONG != 64
28 unsigned long __unused1;
29#endif
30 __kernel_time_t msg_rtime; /* last msgrcv time */
31#if __BITS_PER_LONG != 64
32 unsigned long __unused2;
33#endif
34 __kernel_time_t msg_ctime; /* last change time */
35#if __BITS_PER_LONG != 64
36 unsigned long __unused3;
37#endif
38 unsigned long msg_cbytes; /* current number of bytes on queue */
39 unsigned long msg_qnum; /* number of messages in queue */
40 unsigned long msg_qbytes; /* max number of bytes on queue */
41 __kernel_pid_t msg_lspid; /* pid of last msgsnd */
42 __kernel_pid_t msg_lrpid; /* last receive pid */
43 unsigned long __unused4;
44 unsigned long __unused5;
45};
46
47#endif /* __ASM_GENERIC_MSGBUF_H */
diff --git a/include/asm-generic/sembuf.h b/include/asm-generic/sembuf.h
new file mode 100644
index 000000000000..4cb2c13e5090
--- /dev/null
+++ b/include/asm-generic/sembuf.h
@@ -0,0 +1,38 @@
1#ifndef __ASM_GENERIC_SEMBUF_H
2#define __ASM_GENERIC_SEMBUF_H
3
4#include <asm/bitsperlong.h>
5
6/*
7 * The semid64_ds structure for x86 architecture.
8 * Note extra padding because this structure is passed back and forth
9 * between kernel and user space.
10 *
11 * semid64_ds was originally meant to be architecture specific, but
12 * everyone just ended up making identical copies without specific
13 * optimizations, so we may just as well all use the same one.
14 *
15 * 64 bit architectures typically define a 64 bit __kernel_time_t,
16 * so they do not need the first two padding words.
17 * On big-endian systems, the padding is in the wrong place.
18 *
19 * Pad space is left for:
20 * - 64-bit time_t to solve y2038 problem
21 * - 2 miscellaneous 32-bit values
22 */
23struct semid64_ds {
24 struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
25 __kernel_time_t sem_otime; /* last semop time */
26#if __BITS_PER_LONG != 64
27 unsigned long __unused1;
28#endif
29 __kernel_time_t sem_ctime; /* last change time */
30#if __BITS_PER_LONG != 64
31 unsigned long __unused2;
32#endif
33 unsigned long sem_nsems; /* no. of semaphores in array */
34 unsigned long __unused3;
35 unsigned long __unused4;
36};
37
38#endif /* __ASM_GENERIC_SEMBUF_H */
diff --git a/include/asm-generic/shmbuf.h b/include/asm-generic/shmbuf.h
new file mode 100644
index 000000000000..5768fa60ac82
--- /dev/null
+++ b/include/asm-generic/shmbuf.h
@@ -0,0 +1,59 @@
1#ifndef __ASM_GENERIC_SHMBUF_H
2#define __ASM_GENERIC_SHMBUF_H
3
4#include <asm/bitsperlong.h>
5
6/*
7 * The shmid64_ds structure for x86 architecture.
8 * Note extra padding because this structure is passed back and forth
9 * between kernel and user space.
10 *
11 * shmid64_ds was originally meant to be architecture specific, but
12 * everyone just ended up making identical copies without specific
13 * optimizations, so we may just as well all use the same one.
14 *
15 * 64 bit architectures typically define a 64 bit __kernel_time_t,
16 * so they do not need the first two padding words.
17 * On big-endian systems, the padding is in the wrong place.
18 *
19 *
20 * Pad space is left for:
21 * - 64-bit time_t to solve y2038 problem
22 * - 2 miscellaneous 32-bit values
23 */
24
25struct shmid64_ds {
26 struct ipc64_perm shm_perm; /* operation perms */
27 size_t shm_segsz; /* size of segment (bytes) */
28 __kernel_time_t shm_atime; /* last attach time */
29#if __BITS_PER_LONG != 64
30 unsigned long __unused1;
31#endif
32 __kernel_time_t shm_dtime; /* last detach time */
33#if __BITS_PER_LONG != 64
34 unsigned long __unused2;
35#endif
36 __kernel_time_t shm_ctime; /* last change time */
37#if __BITS_PER_LONG != 64
38 unsigned long __unused3;
39#endif
40 __kernel_pid_t shm_cpid; /* pid of creator */
41 __kernel_pid_t shm_lpid; /* pid of last operator */
42 unsigned long shm_nattch; /* no. of current attaches */
43 unsigned long __unused4;
44 unsigned long __unused5;
45};
46
47struct shminfo64 {
48 unsigned long shmmax;
49 unsigned long shmmin;
50 unsigned long shmmni;
51 unsigned long shmseg;
52 unsigned long shmall;
53 unsigned long __unused1;
54 unsigned long __unused2;
55 unsigned long __unused3;
56 unsigned long __unused4;
57};
58
59#endif /* __ASM_GENERIC_SHMBUF_H */
diff --git a/include/asm-generic/shmparam.h b/include/asm-generic/shmparam.h
new file mode 100644
index 000000000000..51a3852de733
--- /dev/null
+++ b/include/asm-generic/shmparam.h
@@ -0,0 +1,6 @@
1#ifndef __ASM_GENERIC_SHMPARAM_H
2#define __ASM_GENERIC_SHMPARAM_H
3
4#define SHMLBA PAGE_SIZE /* attach addr a multiple of this */
5
6#endif /* _ASM_GENERIC_SHMPARAM_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-14 02:36:58 -0500