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12#include <linux/compat.h>
13#include <linux/kernel.h>
14#include <linux/sched.h>
15#include <linux/fs.h>
16#include <linux/mm.h>
17#include <linux/file.h>
18#include <linux/signal.h>
19#include <linux/resource.h>
20#include <linux/times.h>
21#include <linux/time.h>
22#include <linux/smp.h>
23#include <linux/sem.h>
24#include <linux/msg.h>
25#include <linux/shm.h>
26#include <linux/slab.h>
27#include <linux/uio.h>
28#include <linux/ncp_fs.h>
29#include <linux/poll.h>
30#include <linux/personality.h>
31#include <linux/stat.h>
32#include <linux/highmem.h>
33#include <linux/highuid.h>
34#include <linux/mman.h>
35#include <linux/binfmts.h>
36#include <linux/namei.h>
37#include <linux/vfs.h>
38#include <linux/ptrace.h>
39#include <linux/swap.h>
40#include <linux/syscalls.h>
41
42#include <asm/types.h>
43#include <asm/uaccess.h>
44#include <asm/mmu_context.h>
45
46#include "sys32.h"
47
48#undef DEBUG
49
50#ifdef DEBUG
51#define DBG(x) printk x
52#else
53#define DBG(x)
54#endif
55
56asmlinkage long sys32_unimplemented(int r26, int r25, int r24, int r23,
57 int r22, int r21, int r20)
58{
59 printk(KERN_ERR "%s(%d): Unimplemented 32 on 64 syscall #%d!\n",
60 current->comm, current->pid, r20);
61 return -ENOSYS;
62}
63
64asmlinkage long sys32_sched_rr_get_interval(pid_t pid,
65 struct compat_timespec __user *interval)
66{
67 struct timespec t;
68 int ret;
69
70 KERNEL_SYSCALL(ret, sys_sched_rr_get_interval, pid, (struct timespec __user *)&t);
71 if (put_compat_timespec(&t, interval))
72 return -EFAULT;
73 return ret;
74}
75
76struct msgbuf32 {
77 int mtype;
78 char mtext[1];
79};
80
81asmlinkage long sys32_msgsnd(int msqid,
82 struct msgbuf32 __user *umsgp32,
83 size_t msgsz, int msgflg)
84{
85 struct msgbuf *mb;
86 struct msgbuf32 mb32;
87 int err;
88
89 if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
90 return -ENOMEM;
91
92 err = get_user(mb32.mtype, &umsgp32->mtype);
93 mb->mtype = mb32.mtype;
94 err |= copy_from_user(mb->mtext, &umsgp32->mtext, msgsz);
95
96 if (err)
97 err = -EFAULT;
98 else
99 KERNEL_SYSCALL(err, sys_msgsnd, msqid, (struct msgbuf __user *)mb, msgsz, msgflg);
100
101 kfree(mb);
102 return err;
103}
104
105asmlinkage long sys32_msgrcv(int msqid,
106 struct msgbuf32 __user *umsgp32,
107 size_t msgsz, long msgtyp, int msgflg)
108{
109 struct msgbuf *mb;
110 struct msgbuf32 mb32;
111 int err, len;
112
113 if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
114 return -ENOMEM;
115
116 KERNEL_SYSCALL(err, sys_msgrcv, msqid, (struct msgbuf __user *)mb, msgsz, msgtyp, msgflg);
117
118 if (err >= 0) {
119 len = err;
120 mb32.mtype = mb->mtype;
121 err = put_user(mb32.mtype, &umsgp32->mtype);
122 err |= copy_to_user(&umsgp32->mtext, mb->mtext, len);
123 if (err)
124 err = -EFAULT;
125 else
126 err = len;
127 }
128
129 kfree(mb);
130 return err;
131}
132
133asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, s32 count)
134{
135 mm_segment_t old_fs = get_fs();
136 int ret;
137 off_t of;
138
139 if (offset && get_user(of, offset))
140 return -EFAULT;
141
142 set_fs(KERNEL_DS);
143 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
144 set_fs(old_fs);
145
146 if (offset && put_user(of, offset))
147 return -EFAULT;
148
149 return ret;
150}
151
152asmlinkage int sys32_sendfile64(int out_fd, int in_fd, compat_loff_t __user *offset, s32 count)
153{
154 mm_segment_t old_fs = get_fs();
155 int ret;
156 loff_t lof;
157
158 if (offset && get_user(lof, offset))
159 return -EFAULT;
160
161 set_fs(KERNEL_DS);
162 ret = sys_sendfile64(out_fd, in_fd, offset ? (loff_t __user *)&lof : NULL, count);
163 set_fs(old_fs);
164
165 if (offset && put_user(lof, offset))
166 return -EFAULT;
167
168 return ret;
169}
170
171
172
173
174
175
176asmlinkage int sys32_lseek(unsigned int fd, int offset, unsigned int origin)
177{
178 return sys_lseek(fd, offset, origin);
179}
180
181asmlinkage long sys32_semctl(int semid, int semnum, int cmd, union semun arg)
182{
183 union semun u;
184
185 if (cmd == SETVAL) {
186
187
188
189
190 u.val = *((int *)&arg + 1);
191 return sys_semctl (semid, semnum, cmd, u);
192 }
193 return sys_semctl (semid, semnum, cmd, arg);
194}
195
196long sys32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf,
197 size_t len)
198{
199 return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,
200 buf, len);
201}
202
203asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
204 u32 lenhi, u32 lenlo)
205{
206 return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
207 ((loff_t)lenhi << 32) | lenlo);
208}
209
210asmlinkage long compat_sys_fanotify_mark(int fan_fd, int flags, u32 mask_hi,
211 u32 mask_lo, int fd,
212 const char __user *pathname)
213{
214 return sys_fanotify_mark(fan_fd, flags, ((u64)mask_hi << 32) | mask_lo,
215 fd, pathname);
216}
217