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review.evervolv.com / android_kernel_htc_msm8960 / 99abfeafb5f2eea1bb481330ff37343e1133c924 / . / arch / sparc64 / solaris / ipc.c
blob: 8cef5fd57b2e7a26c2350eeef67d7c3a7477f818 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1/* $Id: ipc.c,v 1.5 1999/12/09 00:41:00 davem Exp $
2 * ipc.c: Solaris IPC emulation
3 *
4 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
5 */
6
7#include <linux/kernel.h>
8#include <linux/types.h>
9#include <linux/smp_lock.h>
10#include <linux/wait.h>
11#include <linux/mm.h>
12#include <linux/shm.h>
13#include <linux/sem.h>
14#include <linux/msg.h>
15
16#include <asm/uaccess.h>
17#include <asm/string.h>
18#include <asm/ipc.h>
19
20#include "conv.h"
21
22struct solaris_ipc_perm {
23 s32 uid;
24 s32 gid;
25 s32 cuid;
26 s32 cgid;
27 u32 mode;
28 u32 seq;
29 int key;
30 s32 pad[4];
31};
32
33struct solaris_shmid_ds {
34 struct solaris_ipc_perm shm_perm;
35 int shm_segsz;
36 u32 shm_amp;
37 unsigned short shm_lkcnt;
38 char __padxx[2];
39 s32 shm_lpid;
40 s32 shm_cpid;
41 u32 shm_nattch;
42 u32 shm_cnattch;
43 s32 shm_atime;
44 s32 shm_pad1;
45 s32 shm_dtime;
46 s32 shm_pad2;
47 s32 shm_ctime;
48 s32 shm_pad3;
49 unsigned short shm_cv;
50 char shm_pad4[2];
51 u32 shm_sptas;
52 s32 shm_pad5[2];
53};
54
55asmlinkage long solaris_shmsys(int cmd, u32 arg1, u32 arg2, u32 arg3)
56{
57 int (*sys_ipc)(unsigned,int,int,unsigned long,void __user *,long) =
58 (int (*)(unsigned,int,int,unsigned long,void __user *,long))SYS(ipc);
59 mm_segment_t old_fs;
60 unsigned long raddr;
61 int ret;
62
63 switch (cmd) {
64 case 0: /* shmat */
65 old_fs = get_fs();
66 set_fs(KERNEL_DS);
67 ret = sys_ipc(SHMAT, arg1, arg3 & ~0x4000, (unsigned long)&raddr, A(arg2), 0);
68 set_fs(old_fs);
69 if (ret >= 0) return (u32)raddr;
70 else return ret;
71 case 1: /* shmctl */
72 switch (arg2) {
73 case 3: /* SHM_LOCK */
74 case 4: /* SHM_UNLOCK */
75 return sys_ipc(SHMCTL, arg1, (arg2 == 3) ? SHM_LOCK : SHM_UNLOCK, 0, NULL, 0);
76 case 10: /* IPC_RMID */
77 return sys_ipc(SHMCTL, arg1, IPC_RMID, 0, NULL, 0);
78 case 11: /* IPC_SET */
79 {
80 struct shmid_ds s;
81 struct solaris_shmid_ds __user *p = A(arg3);
82
83 if (get_user (s.shm_perm.uid, &p->shm_perm.uid) ||
84 __get_user (s.shm_perm.gid, &p->shm_perm.gid) ||
85 __get_user (s.shm_perm.mode, &p->shm_perm.mode))
86 return -EFAULT;
87 old_fs = get_fs();
88 set_fs(KERNEL_DS);
89 ret = sys_ipc(SHMCTL, arg1, IPC_SET, 0, &s, 0);
90 set_fs(old_fs);
91 return ret;
92 }
93 case 12: /* IPC_STAT */
94 {
95 struct shmid_ds s;
96 struct solaris_shmid_ds __user *p = A(arg3);
97
98 old_fs = get_fs();
99 set_fs(KERNEL_DS);
100 ret = sys_ipc(SHMCTL, arg1, IPC_SET, 0, &s, 0);
101 set_fs(old_fs);
102 if (put_user (s.shm_perm.uid, &(p->shm_perm.uid)) ||
103 __put_user (s.shm_perm.gid, &(p->shm_perm.gid)) ||
104 __put_user (s.shm_perm.cuid, &(p->shm_perm.cuid)) ||
105 __put_user (s.shm_perm.cgid, &(p->shm_perm.cgid)) ||
106 __put_user (s.shm_perm.mode, &(p->shm_perm.mode)) ||
107 __put_user (s.shm_perm.seq, &(p->shm_perm.seq)) ||
108 __put_user (s.shm_perm.key, &(p->shm_perm.key)) ||
109 __put_user (s.shm_segsz, &(p->shm_segsz)) ||
110 __put_user (s.shm_lpid, &(p->shm_lpid)) ||
111 __put_user (s.shm_cpid, &(p->shm_cpid)) ||
112 __put_user (s.shm_nattch, &(p->shm_nattch)) ||
113 __put_user (s.shm_atime, &(p->shm_atime)) ||
114 __put_user (s.shm_dtime, &(p->shm_dtime)) ||
115 __put_user (s.shm_ctime, &(p->shm_ctime)))
116 return -EFAULT;
117 return ret;
118 }
119 default: return -EINVAL;
120 }
121 case 2: /* shmdt */
122 return sys_ipc(SHMDT, 0, 0, 0, A(arg1), 0);
123 case 3: /* shmget */
124 return sys_ipc(SHMGET, arg1, arg2, arg3, NULL, 0);
125 }
126 return -EINVAL;
127}