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1 #ifndef _ASM_X86_SHMBUF_H |
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2 #define _ASM_X86_SHMBUF_H |
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3 |
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4 /* |
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5 * The shmid64_ds structure for x86 architecture. |
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6 * Note extra padding because this structure is passed back and forth |
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7 * between kernel and user space. |
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8 * |
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9 * Pad space on 32 bit is left for: |
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10 * - 64-bit time_t to solve y2038 problem |
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11 * - 2 miscellaneous 32-bit values |
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12 * |
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13 * Pad space on 64 bit is left for: |
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14 * - 2 miscellaneous 64-bit values |
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15 */ |
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16 |
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17 struct shmid64_ds { |
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18 struct ipc64_perm shm_perm; /* operation perms */ |
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19 size_t shm_segsz; /* size of segment (bytes) */ |
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20 __kernel_time_t shm_atime; /* last attach time */ |
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21 #ifdef __i386__ |
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22 unsigned long __unused1; |
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23 #endif |
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24 __kernel_time_t shm_dtime; /* last detach time */ |
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25 #ifdef __i386__ |
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26 unsigned long __unused2; |
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27 #endif |
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28 __kernel_time_t shm_ctime; /* last change time */ |
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29 #ifdef __i386__ |
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30 unsigned long __unused3; |
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31 #endif |
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32 __kernel_pid_t shm_cpid; /* pid of creator */ |
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33 __kernel_pid_t shm_lpid; /* pid of last operator */ |
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34 unsigned long shm_nattch; /* no. of current attaches */ |
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35 unsigned long __unused4; |
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36 unsigned long __unused5; |
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37 }; |
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38 |
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39 struct shminfo64 { |
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40 unsigned long shmmax; |
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41 unsigned long shmmin; |
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42 unsigned long shmmni; |
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43 unsigned long shmseg; |
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44 unsigned long shmall; |
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45 unsigned long __unused1; |
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46 unsigned long __unused2; |
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47 unsigned long __unused3; |
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48 unsigned long __unused4; |
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49 }; |
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50 |
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51 #endif /* _ASM_X86_SHMBUF_H */ |