Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
shmbuf.h
Go to the documentation of this file.
1 #ifndef _S390_SHMBUF_H
2 #define _S390_SHMBUF_H
3 
4 /*
5  * The shmid64_ds structure for S/390 architecture.
6  * Note extra padding because this structure is passed back and forth
7  * between kernel and user space.
8  *
9  * Pad space is left for:
10  * - 64-bit time_t to solve y2038 problem (for !__s390x__)
11  * - 2 miscellaneous 32-bit values
12  */
13 
14 struct shmid64_ds {
15  struct ipc64_perm shm_perm; /* operation perms */
16  size_t shm_segsz; /* size of segment (bytes) */
17  __kernel_time_t shm_atime; /* last attach time */
18 #ifndef __s390x__
19  unsigned long __unused1;
20 #endif /* ! __s390x__ */
21  __kernel_time_t shm_dtime; /* last detach time */
22 #ifndef __s390x__
23  unsigned long __unused2;
24 #endif /* ! __s390x__ */
25  __kernel_time_t shm_ctime; /* last change time */
26 #ifndef __s390x__
27  unsigned long __unused3;
28 #endif /* ! __s390x__ */
29  __kernel_pid_t shm_cpid; /* pid of creator */
30  __kernel_pid_t shm_lpid; /* pid of last operator */
31  unsigned long shm_nattch; /* no. of current attaches */
32  unsigned long __unused4;
33  unsigned long __unused5;
34 };
35 
36 struct shminfo64 {
37  unsigned long shmmax;
38  unsigned long shmmin;
39  unsigned long shmmni;
40  unsigned long shmseg;
41  unsigned long shmall;
42  unsigned long __unused1;
43  unsigned long __unused2;
44  unsigned long __unused3;
45  unsigned long __unused4;
46 };
47 
48 #endif /* _S390_SHMBUF_H */