| 1 |
1275 |
phoenix |
#include <linux/kernel.h>
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| 2 |
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#include <linux/sched.h>
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| 3 |
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#include <linux/fs.h>
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| 4 |
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#include <linux/file.h>
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| 5 |
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#include <linux/sem.h>
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| 6 |
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#include <linux/msg.h>
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| 7 |
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#include <linux/mm.h>
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| 8 |
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#include <linux/shm.h>
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| 9 |
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#include <linux/slab.h>
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| 10 |
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#include <linux/ipc.h>
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| 11 |
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#include <asm/mman.h>
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| 12 |
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#include <asm/types.h>
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| 13 |
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#include <asm/uaccess.h>
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| 14 |
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#include <asm/semaphore.h>
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#include <asm/ipc.h>
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| 17 |
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#include <asm/ia32.h>
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| 18 |
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| 19 |
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extern int sem_ctls[];
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| 20 |
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| 21 |
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/*
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| 22 |
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* sys32_ipc() is the de-multiplexer for the SysV IPC calls in 32bit emulation..
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*
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| 24 |
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* This is really horribly ugly.
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| 25 |
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*/
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| 27 |
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struct msgbuf32 {
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| 28 |
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s32 mtype;
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| 29 |
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char mtext[1];
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| 30 |
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};
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| 31 |
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| 32 |
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struct ipc_perm32 {
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| 33 |
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int key;
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| 34 |
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__kernel_uid_t32 uid;
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| 35 |
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__kernel_gid_t32 gid;
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| 36 |
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__kernel_uid_t32 cuid;
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| 37 |
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__kernel_gid_t32 cgid;
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| 38 |
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unsigned short mode;
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| 39 |
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unsigned short seq;
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| 40 |
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};
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| 41 |
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| 42 |
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struct ipc64_perm32 {
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| 43 |
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unsigned key;
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| 44 |
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__kernel_uid32_t32 uid;
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| 45 |
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__kernel_gid32_t32 gid;
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| 46 |
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__kernel_uid32_t32 cuid;
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| 47 |
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__kernel_gid32_t32 cgid;
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| 48 |
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unsigned short mode;
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| 49 |
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unsigned short __pad1;
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| 50 |
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unsigned short seq;
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| 51 |
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unsigned short __pad2;
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| 52 |
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unsigned int unused1;
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| 53 |
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unsigned int unused2;
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| 54 |
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};
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| 55 |
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| 56 |
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struct semid_ds32 {
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| 57 |
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struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */
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| 58 |
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__kernel_time_t32 sem_otime; /* last semop time */
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| 59 |
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__kernel_time_t32 sem_ctime; /* last change time */
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| 60 |
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u32 sem_base; /* ptr to first semaphore in array */
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| 61 |
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u32 sem_pending; /* pending operations to be processed */
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| 62 |
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u32 sem_pending_last; /* last pending operation */
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| 63 |
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u32 undo; /* undo requests on this array */
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| 64 |
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unsigned short sem_nsems; /* no. of semaphores in array */
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| 65 |
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};
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| 66 |
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| 67 |
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struct semid64_ds32 {
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| 68 |
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struct ipc64_perm32 sem_perm;
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| 69 |
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__kernel_time_t32 sem_otime;
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| 70 |
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unsigned int __unused1;
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| 71 |
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__kernel_time_t32 sem_ctime;
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| 72 |
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unsigned int __unused2;
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| 73 |
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unsigned int sem_nsems;
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| 74 |
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unsigned int __unused3;
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| 75 |
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unsigned int __unused4;
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| 76 |
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};
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| 77 |
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| 78 |
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struct msqid_ds32 {
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| 79 |
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struct ipc_perm32 msg_perm;
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| 80 |
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u32 msg_first;
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| 81 |
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u32 msg_last;
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| 82 |
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__kernel_time_t32 msg_stime;
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| 83 |
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__kernel_time_t32 msg_rtime;
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| 84 |
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__kernel_time_t32 msg_ctime;
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| 85 |
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u32 wwait;
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| 86 |
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u32 rwait;
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| 87 |
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unsigned short msg_cbytes;
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| 88 |
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unsigned short msg_qnum;
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| 89 |
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unsigned short msg_qbytes;
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| 90 |
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__kernel_ipc_pid_t32 msg_lspid;
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| 91 |
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__kernel_ipc_pid_t32 msg_lrpid;
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| 92 |
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};
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| 93 |
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| 94 |
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struct msqid64_ds32 {
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| 95 |
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struct ipc64_perm32 msg_perm;
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| 96 |
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__kernel_time_t32 msg_stime;
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| 97 |
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unsigned int __unused1;
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| 98 |
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__kernel_time_t32 msg_rtime;
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| 99 |
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unsigned int __unused2;
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| 100 |
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__kernel_time_t32 msg_ctime;
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| 101 |
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unsigned int __unused3;
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| 102 |
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unsigned int msg_cbytes;
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| 103 |
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unsigned int msg_qnum;
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| 104 |
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unsigned int msg_qbytes;
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| 105 |
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__kernel_pid_t32 msg_lspid;
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| 106 |
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__kernel_pid_t32 msg_lrpid;
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| 107 |
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unsigned int __unused4;
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| 108 |
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unsigned int __unused5;
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| 109 |
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};
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| 110 |
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| 111 |
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struct shmid_ds32 {
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| 112 |
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struct ipc_perm32 shm_perm;
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| 113 |
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int shm_segsz;
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| 114 |
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__kernel_time_t32 shm_atime;
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| 115 |
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__kernel_time_t32 shm_dtime;
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| 116 |
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__kernel_time_t32 shm_ctime;
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| 117 |
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__kernel_ipc_pid_t32 shm_cpid;
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| 118 |
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__kernel_ipc_pid_t32 shm_lpid;
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| 119 |
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unsigned short shm_nattch;
|
| 120 |
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};
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| 121 |
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| 122 |
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struct shmid64_ds32 {
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| 123 |
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struct ipc64_perm32 shm_perm;
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| 124 |
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__kernel_size_t32 shm_segsz;
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| 125 |
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__kernel_time_t32 shm_atime;
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| 126 |
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unsigned int __unused1;
|
| 127 |
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__kernel_time_t32 shm_dtime;
|
| 128 |
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unsigned int __unused2;
|
| 129 |
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__kernel_time_t32 shm_ctime;
|
| 130 |
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unsigned int __unused3;
|
| 131 |
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__kernel_pid_t32 shm_cpid;
|
| 132 |
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__kernel_pid_t32 shm_lpid;
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| 133 |
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unsigned int shm_nattch;
|
| 134 |
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unsigned int __unused4;
|
| 135 |
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unsigned int __unused5;
|
| 136 |
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};
|
| 137 |
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| 138 |
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struct shminfo64_32 {
|
| 139 |
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unsigned int shmmax;
|
| 140 |
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unsigned int shmmin;
|
| 141 |
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unsigned int shmmni;
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| 142 |
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unsigned int shmseg;
|
| 143 |
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unsigned int shmall;
|
| 144 |
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unsigned int __unused1;
|
| 145 |
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unsigned int __unused2;
|
| 146 |
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unsigned int __unused3;
|
| 147 |
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unsigned int __unused4;
|
| 148 |
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};
|
| 149 |
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| 150 |
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struct shm_info32 {
|
| 151 |
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int used_ids;
|
| 152 |
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u32 shm_tot, shm_rss, shm_swp;
|
| 153 |
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u32 swap_attempts, swap_successes;
|
| 154 |
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};
|
| 155 |
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| 156 |
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struct ipc_kludge {
|
| 157 |
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u32 msgp;
|
| 158 |
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s32 msgtyp;
|
| 159 |
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};
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| 160 |
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| 161 |
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| 162 |
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#define A(__x) ((unsigned long)(__x))
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| 163 |
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#define AA(__x) ((unsigned long)(__x))
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| 164 |
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| 165 |
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#define SEMOP 1
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| 166 |
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#define SEMGET 2
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| 167 |
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#define SEMCTL 3
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| 168 |
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#define SEMTIMEDOP 4
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| 169 |
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#define MSGSND 11
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| 170 |
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#define MSGRCV 12
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| 171 |
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#define MSGGET 13
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| 172 |
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#define MSGCTL 14
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| 173 |
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#define SHMAT 21
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| 174 |
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#define SHMDT 22
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| 175 |
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#define SHMGET 23
|
| 176 |
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#define SHMCTL 24
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| 177 |
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| 178 |
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#define IPCOP_MASK(__x) (1UL << (__x))
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| 179 |
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| 180 |
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static int
|
| 181 |
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ipc_parse_version32 (int *cmd)
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| 182 |
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{
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| 183 |
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if (*cmd & IPC_64) {
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| 184 |
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*cmd ^= IPC_64;
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| 185 |
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return IPC_64;
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| 186 |
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} else {
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| 187 |
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return IPC_OLD;
|
| 188 |
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}
|
| 189 |
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}
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| 190 |
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| 191 |
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static int put_semid(void *user_semid, struct semid64_ds *s, int version)
|
| 192 |
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{
|
| 193 |
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int err2;
|
| 194 |
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switch (version) {
|
| 195 |
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case IPC_64: {
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| 196 |
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struct semid64_ds32 *usp64 = (struct semid64_ds32 *) user_semid;
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| 197 |
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| 198 |
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if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) {
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| 199 |
|
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err2 = -EFAULT;
|
| 200 |
|
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break;
|
| 201 |
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}
|
| 202 |
|
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err2 = __put_user(s->sem_perm.key, &usp64->sem_perm.key);
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| 203 |
|
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err2 |= __put_user(s->sem_perm.uid, &usp64->sem_perm.uid);
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| 204 |
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err2 |= __put_user(s->sem_perm.gid, &usp64->sem_perm.gid);
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| 205 |
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err2 |= __put_user(s->sem_perm.cuid, &usp64->sem_perm.cuid);
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| 206 |
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err2 |= __put_user(s->sem_perm.cgid, &usp64->sem_perm.cgid);
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| 207 |
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err2 |= __put_user(s->sem_perm.mode, &usp64->sem_perm.mode);
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| 208 |
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err2 |= __put_user(s->sem_perm.seq, &usp64->sem_perm.seq);
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| 209 |
|
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err2 |= __put_user(s->sem_otime, &usp64->sem_otime);
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| 210 |
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err2 |= __put_user(s->sem_ctime, &usp64->sem_ctime);
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| 211 |
|
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err2 |= __put_user(s->sem_nsems, &usp64->sem_nsems);
|
| 212 |
|
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break;
|
| 213 |
|
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}
|
| 214 |
|
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default: {
|
| 215 |
|
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struct semid_ds32 *usp32 = (struct semid_ds32 *) user_semid;
|
| 216 |
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|
| 217 |
|
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if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) {
|
| 218 |
|
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err2 = -EFAULT;
|
| 219 |
|
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break;
|
| 220 |
|
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}
|
| 221 |
|
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err2 = __put_user(s->sem_perm.key, &usp32->sem_perm.key);
|
| 222 |
|
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err2 |= __put_user(s->sem_perm.uid, &usp32->sem_perm.uid);
|
| 223 |
|
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err2 |= __put_user(s->sem_perm.gid, &usp32->sem_perm.gid);
|
| 224 |
|
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err2 |= __put_user(s->sem_perm.cuid, &usp32->sem_perm.cuid);
|
| 225 |
|
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err2 |= __put_user(s->sem_perm.cgid, &usp32->sem_perm.cgid);
|
| 226 |
|
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err2 |= __put_user(s->sem_perm.mode, &usp32->sem_perm.mode);
|
| 227 |
|
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err2 |= __put_user(s->sem_perm.seq, &usp32->sem_perm.seq);
|
| 228 |
|
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err2 |= __put_user(s->sem_otime, &usp32->sem_otime);
|
| 229 |
|
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err2 |= __put_user(s->sem_ctime, &usp32->sem_ctime);
|
| 230 |
|
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err2 |= __put_user(s->sem_nsems, &usp32->sem_nsems);
|
| 231 |
|
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break;
|
| 232 |
|
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}
|
| 233 |
|
|
}
|
| 234 |
|
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return err2;
|
| 235 |
|
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}
|
| 236 |
|
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|
| 237 |
|
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static int
|
| 238 |
|
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semctl32 (int first, int second, int third, void *uptr)
|
| 239 |
|
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{
|
| 240 |
|
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union semun fourth;
|
| 241 |
|
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u32 pad;
|
| 242 |
|
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int err = 0;
|
| 243 |
|
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struct semid64_ds s;
|
| 244 |
|
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mm_segment_t old_fs;
|
| 245 |
|
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int version = ipc_parse_version32(&third);
|
| 246 |
|
|
|
| 247 |
|
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if (!uptr)
|
| 248 |
|
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return -EINVAL;
|
| 249 |
|
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if (get_user(pad, (u32 *)uptr))
|
| 250 |
|
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return -EFAULT;
|
| 251 |
|
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if (third == SETVAL)
|
| 252 |
|
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fourth.val = (int)pad;
|
| 253 |
|
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else
|
| 254 |
|
|
fourth.__pad = (void *)A(pad);
|
| 255 |
|
|
switch (third) {
|
| 256 |
|
|
case IPC_INFO:
|
| 257 |
|
|
case IPC_RMID:
|
| 258 |
|
|
case IPC_SET:
|
| 259 |
|
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case SEM_INFO:
|
| 260 |
|
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case GETVAL:
|
| 261 |
|
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case GETPID:
|
| 262 |
|
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case GETNCNT:
|
| 263 |
|
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case GETZCNT:
|
| 264 |
|
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case GETALL:
|
| 265 |
|
|
case SETVAL:
|
| 266 |
|
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case SETALL:
|
| 267 |
|
|
err = sys_semctl(first, second, third, fourth);
|
| 268 |
|
|
break;
|
| 269 |
|
|
|
| 270 |
|
|
case IPC_STAT:
|
| 271 |
|
|
case SEM_STAT:
|
| 272 |
|
|
fourth.__pad = &s;
|
| 273 |
|
|
old_fs = get_fs();
|
| 274 |
|
|
set_fs(KERNEL_DS);
|
| 275 |
|
|
err = sys_semctl(first, second, third|IPC_64, fourth);
|
| 276 |
|
|
set_fs(old_fs);
|
| 277 |
|
|
|
| 278 |
|
|
if (!err)
|
| 279 |
|
|
err = put_semid((void *)A(pad), &s, version);
|
| 280 |
|
|
|
| 281 |
|
|
break;
|
| 282 |
|
|
default:
|
| 283 |
|
|
err = -EINVAL;
|
| 284 |
|
|
break;
|
| 285 |
|
|
}
|
| 286 |
|
|
return err;
|
| 287 |
|
|
}
|
| 288 |
|
|
|
| 289 |
|
|
#define MAXBUF (64*1024)
|
| 290 |
|
|
|
| 291 |
|
|
static int
|
| 292 |
|
|
do_sys32_msgsnd (int first, int second, int third, void *uptr)
|
| 293 |
|
|
{
|
| 294 |
|
|
struct msgbuf *p;
|
| 295 |
|
|
struct msgbuf32 *up = (struct msgbuf32 *)uptr;
|
| 296 |
|
|
mm_segment_t old_fs;
|
| 297 |
|
|
int err;
|
| 298 |
|
|
|
| 299 |
|
|
if (second >= MAXBUF-sizeof(struct msgbuf))
|
| 300 |
|
|
return -EINVAL;
|
| 301 |
|
|
p = kmalloc(second + sizeof(struct msgbuf), GFP_USER);
|
| 302 |
|
|
if (!p)
|
| 303 |
|
|
return -ENOMEM;
|
| 304 |
|
|
err = get_user(p->mtype, &up->mtype);
|
| 305 |
|
|
err |= (copy_from_user(p->mtext, &up->mtext, second) ? -EFAULT : 0);
|
| 306 |
|
|
if (err)
|
| 307 |
|
|
goto out;
|
| 308 |
|
|
old_fs = get_fs();
|
| 309 |
|
|
set_fs(KERNEL_DS);
|
| 310 |
|
|
err = sys_msgsnd(first, p, second, third);
|
| 311 |
|
|
set_fs(old_fs);
|
| 312 |
|
|
out:
|
| 313 |
|
|
kfree(p);
|
| 314 |
|
|
return err;
|
| 315 |
|
|
}
|
| 316 |
|
|
|
| 317 |
|
|
static int
|
| 318 |
|
|
do_sys32_msgrcv (int first, int second, int msgtyp, int third, int version, void *uptr)
|
| 319 |
|
|
{
|
| 320 |
|
|
struct msgbuf32 *up;
|
| 321 |
|
|
struct msgbuf *p;
|
| 322 |
|
|
mm_segment_t old_fs;
|
| 323 |
|
|
int err;
|
| 324 |
|
|
|
| 325 |
|
|
if (!version) {
|
| 326 |
|
|
struct ipc_kludge *uipck = (struct ipc_kludge *)uptr;
|
| 327 |
|
|
struct ipc_kludge ipck;
|
| 328 |
|
|
|
| 329 |
|
|
err = -EINVAL;
|
| 330 |
|
|
if (!uptr)
|
| 331 |
|
|
goto out;
|
| 332 |
|
|
err = -EFAULT;
|
| 333 |
|
|
if (copy_from_user(&ipck, uipck, sizeof(struct ipc_kludge)))
|
| 334 |
|
|
goto out;
|
| 335 |
|
|
uptr = (void *)A(ipck.msgp);
|
| 336 |
|
|
msgtyp = ipck.msgtyp;
|
| 337 |
|
|
}
|
| 338 |
|
|
if (second >= MAXBUF-sizeof(struct msgbuf))
|
| 339 |
|
|
return -EINVAL;
|
| 340 |
|
|
err = -ENOMEM;
|
| 341 |
|
|
p = kmalloc(second + sizeof(struct msgbuf), GFP_USER);
|
| 342 |
|
|
if (!p)
|
| 343 |
|
|
goto out;
|
| 344 |
|
|
old_fs = get_fs();
|
| 345 |
|
|
set_fs(KERNEL_DS);
|
| 346 |
|
|
err = sys_msgrcv(first, p, second, msgtyp, third);
|
| 347 |
|
|
set_fs(old_fs);
|
| 348 |
|
|
if (err < 0)
|
| 349 |
|
|
goto free_then_out;
|
| 350 |
|
|
up = (struct msgbuf32 *)uptr;
|
| 351 |
|
|
if (put_user(p->mtype, &up->mtype) || copy_to_user(&up->mtext, p->mtext, err))
|
| 352 |
|
|
err = -EFAULT;
|
| 353 |
|
|
free_then_out:
|
| 354 |
|
|
kfree(p);
|
| 355 |
|
|
out:
|
| 356 |
|
|
return err;
|
| 357 |
|
|
}
|
| 358 |
|
|
|
| 359 |
|
|
static int
|
| 360 |
|
|
msgctl32 (int first, int second, void *uptr)
|
| 361 |
|
|
{
|
| 362 |
|
|
int err = -EINVAL, err2;
|
| 363 |
|
|
struct msqid_ds m;
|
| 364 |
|
|
struct msqid64_ds m64;
|
| 365 |
|
|
struct msqid_ds32 *up32 = (struct msqid_ds32 *)uptr;
|
| 366 |
|
|
struct msqid64_ds32 *up64 = (struct msqid64_ds32 *)uptr;
|
| 367 |
|
|
mm_segment_t old_fs;
|
| 368 |
|
|
int version = ipc_parse_version32(&second);
|
| 369 |
|
|
|
| 370 |
|
|
switch (second) {
|
| 371 |
|
|
case IPC_INFO:
|
| 372 |
|
|
case IPC_RMID:
|
| 373 |
|
|
case MSG_INFO:
|
| 374 |
|
|
err = sys_msgctl(first, second, (struct msqid_ds *)uptr);
|
| 375 |
|
|
break;
|
| 376 |
|
|
|
| 377 |
|
|
case IPC_SET:
|
| 378 |
|
|
if (version == IPC_64) {
|
| 379 |
|
|
err = get_user(m.msg_perm.uid, &up64->msg_perm.uid);
|
| 380 |
|
|
err |= get_user(m.msg_perm.gid, &up64->msg_perm.gid);
|
| 381 |
|
|
err |= get_user(m.msg_perm.mode, &up64->msg_perm.mode);
|
| 382 |
|
|
err |= get_user(m.msg_qbytes, &up64->msg_qbytes);
|
| 383 |
|
|
} else {
|
| 384 |
|
|
err = get_user(m.msg_perm.uid, &up32->msg_perm.uid);
|
| 385 |
|
|
err |= get_user(m.msg_perm.gid, &up32->msg_perm.gid);
|
| 386 |
|
|
err |= get_user(m.msg_perm.mode, &up32->msg_perm.mode);
|
| 387 |
|
|
err |= get_user(m.msg_qbytes, &up32->msg_qbytes);
|
| 388 |
|
|
}
|
| 389 |
|
|
if (err)
|
| 390 |
|
|
break;
|
| 391 |
|
|
old_fs = get_fs();
|
| 392 |
|
|
set_fs(KERNEL_DS);
|
| 393 |
|
|
err = sys_msgctl(first, second, &m);
|
| 394 |
|
|
set_fs(old_fs);
|
| 395 |
|
|
break;
|
| 396 |
|
|
|
| 397 |
|
|
case IPC_STAT:
|
| 398 |
|
|
case MSG_STAT:
|
| 399 |
|
|
old_fs = get_fs();
|
| 400 |
|
|
set_fs(KERNEL_DS);
|
| 401 |
|
|
err = sys_msgctl(first, second|IPC_64, (void *) &m64);
|
| 402 |
|
|
set_fs(old_fs);
|
| 403 |
|
|
|
| 404 |
|
|
if (version == IPC_64) {
|
| 405 |
|
|
if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
|
| 406 |
|
|
err = -EFAULT;
|
| 407 |
|
|
break;
|
| 408 |
|
|
}
|
| 409 |
|
|
err2 = __put_user(m64.msg_perm.key, &up64->msg_perm.key);
|
| 410 |
|
|
err2 |= __put_user(m64.msg_perm.uid, &up64->msg_perm.uid);
|
| 411 |
|
|
err2 |= __put_user(m64.msg_perm.gid, &up64->msg_perm.gid);
|
| 412 |
|
|
err2 |= __put_user(m64.msg_perm.cuid, &up64->msg_perm.cuid);
|
| 413 |
|
|
err2 |= __put_user(m64.msg_perm.cgid, &up64->msg_perm.cgid);
|
| 414 |
|
|
err2 |= __put_user(m64.msg_perm.mode, &up64->msg_perm.mode);
|
| 415 |
|
|
err2 |= __put_user(m64.msg_perm.seq, &up64->msg_perm.seq);
|
| 416 |
|
|
err2 |= __put_user(m64.msg_stime, &up64->msg_stime);
|
| 417 |
|
|
err2 |= __put_user(m64.msg_rtime, &up64->msg_rtime);
|
| 418 |
|
|
err2 |= __put_user(m64.msg_ctime, &up64->msg_ctime);
|
| 419 |
|
|
err2 |= __put_user(m64.msg_cbytes, &up64->msg_cbytes);
|
| 420 |
|
|
err2 |= __put_user(m64.msg_qnum, &up64->msg_qnum);
|
| 421 |
|
|
err2 |= __put_user(m64.msg_qbytes, &up64->msg_qbytes);
|
| 422 |
|
|
err2 |= __put_user(m64.msg_lspid, &up64->msg_lspid);
|
| 423 |
|
|
err2 |= __put_user(m64.msg_lrpid, &up64->msg_lrpid);
|
| 424 |
|
|
if (err2)
|
| 425 |
|
|
err = -EFAULT;
|
| 426 |
|
|
} else {
|
| 427 |
|
|
if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
|
| 428 |
|
|
err = -EFAULT;
|
| 429 |
|
|
break;
|
| 430 |
|
|
}
|
| 431 |
|
|
err2 = __put_user(m64.msg_perm.key, &up32->msg_perm.key);
|
| 432 |
|
|
err2 |= __put_user(m64.msg_perm.uid, &up32->msg_perm.uid);
|
| 433 |
|
|
err2 |= __put_user(m64.msg_perm.gid, &up32->msg_perm.gid);
|
| 434 |
|
|
err2 |= __put_user(m64.msg_perm.cuid, &up32->msg_perm.cuid);
|
| 435 |
|
|
err2 |= __put_user(m64.msg_perm.cgid, &up32->msg_perm.cgid);
|
| 436 |
|
|
err2 |= __put_user(m64.msg_perm.mode, &up32->msg_perm.mode);
|
| 437 |
|
|
err2 |= __put_user(m64.msg_perm.seq, &up32->msg_perm.seq);
|
| 438 |
|
|
err2 |= __put_user(m64.msg_stime, &up32->msg_stime);
|
| 439 |
|
|
err2 |= __put_user(m64.msg_rtime, &up32->msg_rtime);
|
| 440 |
|
|
err2 |= __put_user(m64.msg_ctime, &up32->msg_ctime);
|
| 441 |
|
|
err2 |= __put_user(m64.msg_cbytes, &up32->msg_cbytes);
|
| 442 |
|
|
err2 |= __put_user(m64.msg_qnum, &up32->msg_qnum);
|
| 443 |
|
|
err2 |= __put_user(m64.msg_qbytes, &up32->msg_qbytes);
|
| 444 |
|
|
err2 |= __put_user(m64.msg_lspid, &up32->msg_lspid);
|
| 445 |
|
|
err2 |= __put_user(m64.msg_lrpid, &up32->msg_lrpid);
|
| 446 |
|
|
if (err2)
|
| 447 |
|
|
err = -EFAULT;
|
| 448 |
|
|
}
|
| 449 |
|
|
break;
|
| 450 |
|
|
}
|
| 451 |
|
|
return err;
|
| 452 |
|
|
}
|
| 453 |
|
|
|
| 454 |
|
|
static int
|
| 455 |
|
|
shmat32 (int first, int second, int third, int version, void *uptr)
|
| 456 |
|
|
{
|
| 457 |
|
|
unsigned long raddr;
|
| 458 |
|
|
u32 *uaddr = (u32 *)A((u32)third);
|
| 459 |
|
|
int err;
|
| 460 |
|
|
|
| 461 |
|
|
if (version == 1)
|
| 462 |
|
|
return -EINVAL; /* iBCS2 emulator entry point: unsupported */
|
| 463 |
|
|
err = sys_shmat(first, uptr, second, &raddr);
|
| 464 |
|
|
if (err)
|
| 465 |
|
|
return err;
|
| 466 |
|
|
return put_user(raddr, uaddr);
|
| 467 |
|
|
}
|
| 468 |
|
|
|
| 469 |
|
|
static int put_shmid64(struct shmid64_ds *s64p, void *uptr, int version)
|
| 470 |
|
|
{
|
| 471 |
|
|
int err2;
|
| 472 |
|
|
#define s64 (*s64p)
|
| 473 |
|
|
if (version == IPC_64) {
|
| 474 |
|
|
struct shmid64_ds32 *up64 = (struct shmid64_ds32 *)uptr;
|
| 475 |
|
|
|
| 476 |
|
|
if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64)))
|
| 477 |
|
|
return -EFAULT;
|
| 478 |
|
|
|
| 479 |
|
|
err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key);
|
| 480 |
|
|
err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid);
|
| 481 |
|
|
err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid);
|
| 482 |
|
|
err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid);
|
| 483 |
|
|
err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid);
|
| 484 |
|
|
err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode);
|
| 485 |
|
|
err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq);
|
| 486 |
|
|
err2 |= __put_user(s64.shm_atime, &up64->shm_atime);
|
| 487 |
|
|
err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime);
|
| 488 |
|
|
err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime);
|
| 489 |
|
|
err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz);
|
| 490 |
|
|
err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch);
|
| 491 |
|
|
err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid);
|
| 492 |
|
|
err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid);
|
| 493 |
|
|
} else {
|
| 494 |
|
|
struct shmid_ds32 *up32 = (struct shmid_ds32 *)uptr;
|
| 495 |
|
|
|
| 496 |
|
|
if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32)))
|
| 497 |
|
|
return -EFAULT;
|
| 498 |
|
|
|
| 499 |
|
|
err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key);
|
| 500 |
|
|
err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid);
|
| 501 |
|
|
err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid);
|
| 502 |
|
|
err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid);
|
| 503 |
|
|
err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid);
|
| 504 |
|
|
err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode);
|
| 505 |
|
|
err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq);
|
| 506 |
|
|
err2 |= __put_user(s64.shm_atime, &up32->shm_atime);
|
| 507 |
|
|
err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime);
|
| 508 |
|
|
err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime);
|
| 509 |
|
|
err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz);
|
| 510 |
|
|
err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch);
|
| 511 |
|
|
err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid);
|
| 512 |
|
|
err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid);
|
| 513 |
|
|
}
|
| 514 |
|
|
#undef s64
|
| 515 |
|
|
return err2 ? -EFAULT : 0;
|
| 516 |
|
|
}
|
| 517 |
|
|
static int
|
| 518 |
|
|
shmctl32 (int first, int second, void *uptr)
|
| 519 |
|
|
{
|
| 520 |
|
|
int err = -EFAULT, err2;
|
| 521 |
|
|
struct shmid_ds s;
|
| 522 |
|
|
struct shmid64_ds s64;
|
| 523 |
|
|
mm_segment_t old_fs;
|
| 524 |
|
|
struct shm_info32 *uip = (struct shm_info32 *)uptr;
|
| 525 |
|
|
struct shm_info si;
|
| 526 |
|
|
int version = ipc_parse_version32(&second);
|
| 527 |
|
|
struct shminfo64 smi;
|
| 528 |
|
|
struct shminfo *usi32 = (struct shminfo *) uptr;
|
| 529 |
|
|
struct shminfo64_32 *usi64 = (struct shminfo64_32 *) uptr;
|
| 530 |
|
|
|
| 531 |
|
|
switch (second) {
|
| 532 |
|
|
case IPC_INFO:
|
| 533 |
|
|
old_fs = get_fs();
|
| 534 |
|
|
set_fs(KERNEL_DS);
|
| 535 |
|
|
err = sys_shmctl(first, second|IPC_64, (struct shmid_ds *)&smi);
|
| 536 |
|
|
set_fs(old_fs);
|
| 537 |
|
|
|
| 538 |
|
|
if (version == IPC_64) {
|
| 539 |
|
|
if (!access_ok(VERIFY_WRITE, usi64, sizeof(*usi64))) {
|
| 540 |
|
|
err = -EFAULT;
|
| 541 |
|
|
break;
|
| 542 |
|
|
}
|
| 543 |
|
|
err2 = __put_user(smi.shmmax, &usi64->shmmax);
|
| 544 |
|
|
err2 |= __put_user(smi.shmmin, &usi64->shmmin);
|
| 545 |
|
|
err2 |= __put_user(smi.shmmni, &usi64->shmmni);
|
| 546 |
|
|
err2 |= __put_user(smi.shmseg, &usi64->shmseg);
|
| 547 |
|
|
err2 |= __put_user(smi.shmall, &usi64->shmall);
|
| 548 |
|
|
} else {
|
| 549 |
|
|
if (!access_ok(VERIFY_WRITE, usi32, sizeof(*usi32))) {
|
| 550 |
|
|
err = -EFAULT;
|
| 551 |
|
|
break;
|
| 552 |
|
|
}
|
| 553 |
|
|
err2 = __put_user(smi.shmmax, &usi32->shmmax);
|
| 554 |
|
|
err2 |= __put_user(smi.shmmin, &usi32->shmmin);
|
| 555 |
|
|
err2 |= __put_user(smi.shmmni, &usi32->shmmni);
|
| 556 |
|
|
err2 |= __put_user(smi.shmseg, &usi32->shmseg);
|
| 557 |
|
|
err2 |= __put_user(smi.shmall, &usi32->shmall);
|
| 558 |
|
|
}
|
| 559 |
|
|
if (err2)
|
| 560 |
|
|
err = -EFAULT;
|
| 561 |
|
|
break;
|
| 562 |
|
|
|
| 563 |
|
|
case IPC_RMID:
|
| 564 |
|
|
case SHM_LOCK:
|
| 565 |
|
|
case SHM_UNLOCK:
|
| 566 |
|
|
err = sys_shmctl(first, second, (struct shmid_ds *)uptr);
|
| 567 |
|
|
break;
|
| 568 |
|
|
|
| 569 |
|
|
case IPC_SET:
|
| 570 |
|
|
if (version == IPC_64) {
|
| 571 |
|
|
struct shmid64_ds32 *up64 = (struct shmid64_ds32 *)uptr;
|
| 572 |
|
|
err = get_user(s.shm_perm.uid, &up64->shm_perm.uid);
|
| 573 |
|
|
err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid);
|
| 574 |
|
|
err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode);
|
| 575 |
|
|
} else {
|
| 576 |
|
|
struct shmid_ds32 *up32 = (struct shmid_ds32 *)uptr;
|
| 577 |
|
|
err = get_user(s.shm_perm.uid, &up32->shm_perm.uid);
|
| 578 |
|
|
err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid);
|
| 579 |
|
|
err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode);
|
| 580 |
|
|
}
|
| 581 |
|
|
if (err)
|
| 582 |
|
|
break;
|
| 583 |
|
|
old_fs = get_fs();
|
| 584 |
|
|
set_fs(KERNEL_DS);
|
| 585 |
|
|
err = sys_shmctl(first, second, &s);
|
| 586 |
|
|
set_fs(old_fs);
|
| 587 |
|
|
break;
|
| 588 |
|
|
|
| 589 |
|
|
case IPC_STAT:
|
| 590 |
|
|
case SHM_STAT:
|
| 591 |
|
|
old_fs = get_fs();
|
| 592 |
|
|
set_fs(KERNEL_DS);
|
| 593 |
|
|
err = sys_shmctl(first, second|IPC_64, (void *) &s64);
|
| 594 |
|
|
set_fs(old_fs);
|
| 595 |
|
|
|
| 596 |
|
|
if (err < 0)
|
| 597 |
|
|
break;
|
| 598 |
|
|
err2 = put_shmid64(&s64, uptr, version);
|
| 599 |
|
|
if (err2)
|
| 600 |
|
|
err = err2;
|
| 601 |
|
|
break;
|
| 602 |
|
|
|
| 603 |
|
|
case SHM_INFO:
|
| 604 |
|
|
old_fs = get_fs();
|
| 605 |
|
|
set_fs(KERNEL_DS);
|
| 606 |
|
|
err = sys_shmctl(first, second, (void *)&si);
|
| 607 |
|
|
set_fs(old_fs);
|
| 608 |
|
|
if (err < 0)
|
| 609 |
|
|
break;
|
| 610 |
|
|
|
| 611 |
|
|
if (!access_ok(VERIFY_WRITE, uip, sizeof(*uip))) {
|
| 612 |
|
|
err = -EFAULT;
|
| 613 |
|
|
break;
|
| 614 |
|
|
}
|
| 615 |
|
|
err2 = __put_user(si.used_ids, &uip->used_ids);
|
| 616 |
|
|
err2 |= __put_user(si.shm_tot, &uip->shm_tot);
|
| 617 |
|
|
err2 |= __put_user(si.shm_rss, &uip->shm_rss);
|
| 618 |
|
|
err2 |= __put_user(si.shm_swp, &uip->shm_swp);
|
| 619 |
|
|
err2 |= __put_user(si.swap_attempts, &uip->swap_attempts);
|
| 620 |
|
|
err2 |= __put_user(si.swap_successes, &uip->swap_successes);
|
| 621 |
|
|
if (err2)
|
| 622 |
|
|
err = -EFAULT;
|
| 623 |
|
|
break;
|
| 624 |
|
|
|
| 625 |
|
|
default:
|
| 626 |
|
|
err = -EINVAL;
|
| 627 |
|
|
break;
|
| 628 |
|
|
|
| 629 |
|
|
}
|
| 630 |
|
|
return err;
|
| 631 |
|
|
}
|
| 632 |
|
|
|
| 633 |
|
|
asmlinkage long
|
| 634 |
|
|
sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
|
| 635 |
|
|
{
|
| 636 |
|
|
int version;
|
| 637 |
|
|
|
| 638 |
|
|
version = call >> 16; /* hack for backward compatibility */
|
| 639 |
|
|
call &= 0xffff;
|
| 640 |
|
|
|
| 641 |
|
|
switch (call) {
|
| 642 |
|
|
case SEMOP:
|
| 643 |
|
|
/* struct sembuf is the same on 32 and 64bit :)) */
|
| 644 |
|
|
return sys_semtimedop(first, (struct sembuf *)AA(ptr), second, NULL);
|
| 645 |
|
|
case SEMTIMEDOP: {
|
| 646 |
|
|
int err;
|
| 647 |
|
|
mm_segment_t oldfs = get_fs();
|
| 648 |
|
|
struct timespec32 *ts32 = (struct timespec32 *)AA(fifth);
|
| 649 |
|
|
struct timespec ts;
|
| 650 |
|
|
if ((unsigned)second > sem_ctls[2])
|
| 651 |
|
|
return -EINVAL;
|
| 652 |
|
|
if (ts32) {
|
| 653 |
|
|
if (get_user(ts.tv_sec, &ts32->tv_sec) ||
|
| 654 |
|
|
__get_user(ts.tv_nsec, &ts32->tv_nsec) ||
|
| 655 |
|
|
verify_area(VERIFY_READ, (void *)AA(ptr),
|
| 656 |
|
|
second*sizeof(struct sembuf)))
|
| 657 |
|
|
return -EFAULT;
|
| 658 |
|
|
}
|
| 659 |
|
|
set_fs(KERNEL_DS);
|
| 660 |
|
|
err = sys_semtimedop(first, (struct sembuf *)AA(ptr), second,
|
| 661 |
|
|
ts32 ? &ts : NULL);
|
| 662 |
|
|
set_fs(oldfs);
|
| 663 |
|
|
return err;
|
| 664 |
|
|
}
|
| 665 |
|
|
case SEMGET:
|
| 666 |
|
|
return sys_semget(first, second, third);
|
| 667 |
|
|
case SEMCTL:
|
| 668 |
|
|
return semctl32(first, second, third, (void *)AA(ptr));
|
| 669 |
|
|
|
| 670 |
|
|
case MSGSND:
|
| 671 |
|
|
return do_sys32_msgsnd(first, second, third, (void *)AA(ptr));
|
| 672 |
|
|
case MSGRCV:
|
| 673 |
|
|
return do_sys32_msgrcv(first, second, fifth, third, version, (void *)AA(ptr));
|
| 674 |
|
|
case MSGGET:
|
| 675 |
|
|
return sys_msgget((key_t) first, second);
|
| 676 |
|
|
case MSGCTL:
|
| 677 |
|
|
return msgctl32(first, second, (void *)AA(ptr));
|
| 678 |
|
|
|
| 679 |
|
|
case SHMAT:
|
| 680 |
|
|
return shmat32(first, second, third, version, (void *)AA(ptr));
|
| 681 |
|
|
break;
|
| 682 |
|
|
case SHMDT:
|
| 683 |
|
|
return sys_shmdt((char *)AA(ptr));
|
| 684 |
|
|
case SHMGET:
|
| 685 |
|
|
return sys_shmget(first, second, third);
|
| 686 |
|
|
case SHMCTL:
|
| 687 |
|
|
return shmctl32(first, second, (void *)AA(ptr));
|
| 688 |
|
|
|
| 689 |
|
|
}
|
| 690 |
|
|
return -ENOSYS;
|
| 691 |
|
|
}
|
| 692 |
|
|
|
