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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/smp_lock.h>
24#include <linux/sem.h>
25#include <linux/msg.h>
26#include <linux/shm.h>
27#include <linux/slab.h>
28#include <linux/uio.h>
29#include <linux/nfs_fs.h>
30#include <linux/ncp_fs.h>
31#include <linux/sunrpc/svc.h>
32#include <linux/nfsd/nfsd.h>
33#include <linux/nfsd/cache.h>
34#include <linux/nfsd/xdr.h>
35#include <linux/nfsd/syscall.h>
36#include <linux/poll.h>
37#include <linux/personality.h>
38#include <linux/stat.h>
39#include <linux/highmem.h>
40#include <linux/highuid.h>
41#include <linux/mman.h>
42#include <linux/binfmts.h>
43#include <linux/namei.h>
44#include <linux/vfs.h>
45#include <linux/ptrace.h>
46#include <linux/swap.h>
47#include <linux/syscalls.h>
48
49#include <asm/types.h>
50#include <asm/uaccess.h>
51#include <asm/mmu_context.h>
52
53#include "sys32.h"
54
55#undef DEBUG
56
57#ifdef DEBUG
58#define DBG(x) printk x
59#else
60#define DBG(x)
61#endif
62
63
64
65
66
67asmlinkage int sys32_execve(struct pt_regs *regs)
68{
69 int error;
70 char *filename;
71
72 DBG(("sys32_execve(%p) r26 = 0x%lx\n", regs, regs->gr[26]));
73 filename = getname((const char __user *) regs->gr[26]);
74 error = PTR_ERR(filename);
75 if (IS_ERR(filename))
76 goto out;
77 error = compat_do_execve(filename, compat_ptr(regs->gr[25]),
78 compat_ptr(regs->gr[24]), regs);
79 putname(filename);
80out:
81
82 return error;
83}
84
85asmlinkage long sys32_unimplemented(int r26, int r25, int r24, int r23,
86 int r22, int r21, int r20)
87{
88 printk(KERN_ERR "%s(%d): Unimplemented 32 on 64 syscall #%d!\n",
89 current->comm, current->pid, r20);
90 return -ENOSYS;
91}
92
93#ifdef CONFIG_SYSCTL
94
95struct __sysctl_args32 {
96 u32 name;
97 int nlen;
98 u32 oldval;
99 u32 oldlenp;
100 u32 newval;
101 u32 newlen;
102 u32 __unused[4];
103};
104
105asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
106{
107#ifndef CONFIG_SYSCTL_SYSCALL
108 return -ENOSYS;
109#else
110 struct __sysctl_args32 tmp;
111 int error;
112 unsigned int oldlen32;
113 size_t oldlen, __user *oldlenp = NULL;
114 unsigned long addr = (((long __force)&args->__unused[0]) + 7) & ~7;
115
116 DBG(("sysctl32(%p)\n", args));
117
118 if (copy_from_user(&tmp, args, sizeof(tmp)))
119 return -EFAULT;
120
121 if (tmp.oldval && tmp.oldlenp) {
122
123
124
125
126
127
128
129
130
131
132 if (get_user(oldlen32, (u32 *)(u64)tmp.oldlenp))
133 return -EFAULT;
134 oldlen = oldlen32;
135 if (put_user(oldlen, (size_t *)addr))
136 return -EFAULT;
137 oldlenp = (size_t *)addr;
138 }
139
140 lock_kernel();
141 error = do_sysctl((int __user *)(u64)tmp.name, tmp.nlen,
142 (void __user *)(u64)tmp.oldval, oldlenp,
143 (void __user *)(u64)tmp.newval, tmp.newlen);
144 unlock_kernel();
145 if (oldlenp) {
146 if (!error) {
147 if (get_user(oldlen, (size_t *)addr)) {
148 error = -EFAULT;
149 } else {
150 oldlen32 = oldlen;
151 if (put_user(oldlen32, (u32 *)(u64)tmp.oldlenp))
152 error = -EFAULT;
153 }
154 }
155 if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
156 error = -EFAULT;
157 }
158 return error;
159#endif
160}
161
162#endif
163
164asmlinkage long sys32_sched_rr_get_interval(pid_t pid,
165 struct compat_timespec __user *interval)
166{
167 struct timespec t;
168 int ret;
169
170 KERNEL_SYSCALL(ret, sys_sched_rr_get_interval, pid, (struct timespec __user *)&t);
171 if (put_compat_timespec(&t, interval))
172 return -EFAULT;
173 return ret;
174}
175
176struct msgbuf32 {
177 int mtype;
178 char mtext[1];
179};
180
181asmlinkage long sys32_msgsnd(int msqid,
182 struct msgbuf32 __user *umsgp32,
183 size_t msgsz, int msgflg)
184{
185 struct msgbuf *mb;
186 struct msgbuf32 mb32;
187 int err;
188
189 if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
190 return -ENOMEM;
191
192 err = get_user(mb32.mtype, &umsgp32->mtype);
193 mb->mtype = mb32.mtype;
194 err |= copy_from_user(mb->mtext, &umsgp32->mtext, msgsz);
195
196 if (err)
197 err = -EFAULT;
198 else
199 KERNEL_SYSCALL(err, sys_msgsnd, msqid, (struct msgbuf __user *)mb, msgsz, msgflg);
200
201 kfree(mb);
202 return err;
203}
204
205asmlinkage long sys32_msgrcv(int msqid,
206 struct msgbuf32 __user *umsgp32,
207 size_t msgsz, long msgtyp, int msgflg)
208{
209 struct msgbuf *mb;
210 struct msgbuf32 mb32;
211 int err, len;
212
213 if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
214 return -ENOMEM;
215
216 KERNEL_SYSCALL(err, sys_msgrcv, msqid, (struct msgbuf __user *)mb, msgsz, msgtyp, msgflg);
217
218 if (err >= 0) {
219 len = err;
220 mb32.mtype = mb->mtype;
221 err = put_user(mb32.mtype, &umsgp32->mtype);
222 err |= copy_to_user(&umsgp32->mtext, mb->mtext, len);
223 if (err)
224 err = -EFAULT;
225 else
226 err = len;
227 }
228
229 kfree(mb);
230 return err;
231}
232
233asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, s32 count)
234{
235 mm_segment_t old_fs = get_fs();
236 int ret;
237 off_t of;
238
239 if (offset && get_user(of, offset))
240 return -EFAULT;
241
242 set_fs(KERNEL_DS);
243 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
244 set_fs(old_fs);
245
246 if (offset && put_user(of, offset))
247 return -EFAULT;
248
249 return ret;
250}
251
252asmlinkage int sys32_sendfile64(int out_fd, int in_fd, compat_loff_t __user *offset, s32 count)
253{
254 mm_segment_t old_fs = get_fs();
255 int ret;
256 loff_t lof;
257
258 if (offset && get_user(lof, offset))
259 return -EFAULT;
260
261 set_fs(KERNEL_DS);
262 ret = sys_sendfile64(out_fd, in_fd, offset ? (loff_t __user *)&lof : NULL, count);
263 set_fs(old_fs);
264
265 if (offset && put_user(lof, offset))
266 return -EFAULT;
267
268 return ret;
269}
270
271
272
273
274
275
276asmlinkage int sys32_lseek(unsigned int fd, int offset, unsigned int origin)
277{
278 return sys_lseek(fd, offset, origin);
279}
280
281asmlinkage long sys32_semctl(int semid, int semnum, int cmd, union semun arg)
282{
283 union semun u;
284
285 if (cmd == SETVAL) {
286
287
288
289
290 u.val = *((int *)&arg + 1);
291 return sys_semctl (semid, semnum, cmd, u);
292 }
293 return sys_semctl (semid, semnum, cmd, arg);
294}
295
296long sys32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf,
297 size_t len)
298{
299 return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,
300 buf, len);
301}
302
303asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
304 u32 lenhi, u32 lenlo)
305{
306 return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
307 ((loff_t)lenhi << 32) | lenlo);
308}
309