diff options
Diffstat (limited to 'arch/x86/include/asm/shmbuf.h')
-rw-r--r-- | arch/x86/include/asm/shmbuf.h | 60 |
1 files changed, 1 insertions, 59 deletions
diff --git a/arch/x86/include/asm/shmbuf.h b/arch/x86/include/asm/shmbuf.h index 5768fa60ac82..83c05fc2de38 100644 --- a/arch/x86/include/asm/shmbuf.h +++ b/arch/x86/include/asm/shmbuf.h | |||
@@ -1,59 +1 @@ | |||
1 | #ifndef __ASM_GENERIC_SHMBUF_H | #include <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 | |||
25 | struct 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 | |||
47 | struct 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 */ | ||