]> git.kernelconcepts.de Git - karo-tx-linux.git/blob - arch/sparc/kernel/sys_sparc32.c
sh_eth: use DMA barriers
[karo-tx-linux.git] / arch / sparc / kernel / sys_sparc32.c
1 /* sys_sparc32.c: Conversion between 32bit and 64bit native syscalls.
2  *
3  * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
4  * Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net)
5  *
6  * These routines maintain argument size conversion between 32bit and 64bit
7  * environment.
8  */
9
10 #include <linux/kernel.h>
11 #include <linux/sched.h>
12 #include <linux/capability.h>
13 #include <linux/fs.h> 
14 #include <linux/mm.h> 
15 #include <linux/file.h> 
16 #include <linux/signal.h>
17 #include <linux/resource.h>
18 #include <linux/times.h>
19 #include <linux/smp.h>
20 #include <linux/sem.h>
21 #include <linux/msg.h>
22 #include <linux/shm.h>
23 #include <linux/uio.h>
24 #include <linux/nfs_fs.h>
25 #include <linux/quota.h>
26 #include <linux/poll.h>
27 #include <linux/personality.h>
28 #include <linux/stat.h>
29 #include <linux/filter.h>
30 #include <linux/highmem.h>
31 #include <linux/highuid.h>
32 #include <linux/mman.h>
33 #include <linux/ipv6.h>
34 #include <linux/in.h>
35 #include <linux/icmpv6.h>
36 #include <linux/syscalls.h>
37 #include <linux/sysctl.h>
38 #include <linux/binfmts.h>
39 #include <linux/dnotify.h>
40 #include <linux/security.h>
41 #include <linux/compat.h>
42 #include <linux/vfs.h>
43 #include <linux/ptrace.h>
44 #include <linux/slab.h>
45
46 #include <asm/types.h>
47 #include <asm/uaccess.h>
48 #include <asm/fpumacro.h>
49 #include <asm/mmu_context.h>
50 #include <asm/compat_signal.h>
51
52 #include "systbls.h"
53
54 asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
55 {
56         if ((int)high < 0)
57                 return -EINVAL;
58         else
59                 return sys_truncate(path, (high << 32) | low);
60 }
61
62 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
63 {
64         if ((int)high < 0)
65                 return -EINVAL;
66         else
67                 return sys_ftruncate(fd, (high << 32) | low);
68 }
69
70 static int cp_compat_stat64(struct kstat *stat,
71                             struct compat_stat64 __user *statbuf)
72 {
73         int err;
74
75         err  = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev);
76         err |= put_user(stat->ino, &statbuf->st_ino);
77         err |= put_user(stat->mode, &statbuf->st_mode);
78         err |= put_user(stat->nlink, &statbuf->st_nlink);
79         err |= put_user(from_kuid_munged(current_user_ns(), stat->uid), &statbuf->st_uid);
80         err |= put_user(from_kgid_munged(current_user_ns(), stat->gid), &statbuf->st_gid);
81         err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev);
82         err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]);
83         err |= put_user(stat->size, &statbuf->st_size);
84         err |= put_user(stat->blksize, &statbuf->st_blksize);
85         err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]);
86         err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]);
87         err |= put_user(stat->blocks, &statbuf->st_blocks);
88         err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
89         err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
90         err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
91         err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
92         err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
93         err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
94         err |= put_user(0, &statbuf->__unused4);
95         err |= put_user(0, &statbuf->__unused5);
96
97         return err;
98 }
99
100 asmlinkage long compat_sys_stat64(const char __user * filename,
101                 struct compat_stat64 __user *statbuf)
102 {
103         struct kstat stat;
104         int error = vfs_stat(filename, &stat);
105
106         if (!error)
107                 error = cp_compat_stat64(&stat, statbuf);
108         return error;
109 }
110
111 asmlinkage long compat_sys_lstat64(const char __user * filename,
112                 struct compat_stat64 __user *statbuf)
113 {
114         struct kstat stat;
115         int error = vfs_lstat(filename, &stat);
116
117         if (!error)
118                 error = cp_compat_stat64(&stat, statbuf);
119         return error;
120 }
121
122 asmlinkage long compat_sys_fstat64(unsigned int fd,
123                 struct compat_stat64 __user * statbuf)
124 {
125         struct kstat stat;
126         int error = vfs_fstat(fd, &stat);
127
128         if (!error)
129                 error = cp_compat_stat64(&stat, statbuf);
130         return error;
131 }
132
133 asmlinkage long compat_sys_fstatat64(unsigned int dfd,
134                 const char __user *filename,
135                 struct compat_stat64 __user * statbuf, int flag)
136 {
137         struct kstat stat;
138         int error;
139
140         error = vfs_fstatat(dfd, filename, &stat, flag);
141         if (error)
142                 return error;
143         return cp_compat_stat64(&stat, statbuf);
144 }
145
146 COMPAT_SYSCALL_DEFINE3(sparc_sigaction, int, sig,
147                         struct compat_old_sigaction __user *,act,
148                         struct compat_old_sigaction __user *,oact)
149 {
150         WARN_ON_ONCE(sig >= 0);
151         return compat_sys_sigaction(-sig, act, oact);
152 }
153
154 COMPAT_SYSCALL_DEFINE5(rt_sigaction, int, sig,
155                         struct compat_sigaction __user *,act,
156                         struct compat_sigaction __user *,oact,
157                         void __user *,restorer,
158                         compat_size_t,sigsetsize)
159 {
160         struct k_sigaction new_ka, old_ka;
161         int ret;
162         compat_sigset_t set32;
163
164         /* XXX: Don't preclude handling different sized sigset_t's.  */
165         if (sigsetsize != sizeof(compat_sigset_t))
166                 return -EINVAL;
167
168         if (act) {
169                 u32 u_handler, u_restorer;
170
171                 new_ka.ka_restorer = restorer;
172                 ret = get_user(u_handler, &act->sa_handler);
173                 new_ka.sa.sa_handler =  compat_ptr(u_handler);
174                 ret |= copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
175                 sigset_from_compat(&new_ka.sa.sa_mask, &set32);
176                 ret |= get_user(new_ka.sa.sa_flags, &act->sa_flags);
177                 ret |= get_user(u_restorer, &act->sa_restorer);
178                 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
179                 if (ret)
180                         return -EFAULT;
181         }
182
183         ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
184
185         if (!ret && oact) {
186                 sigset_to_compat(&set32, &old_ka.sa.sa_mask);
187                 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
188                 ret |= copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
189                 ret |= put_user(old_ka.sa.sa_flags, &oact->sa_flags);
190                 ret |= put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
191                 if (ret)
192                         ret = -EFAULT;
193         }
194
195         return ret;
196 }
197
198 asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
199                                         char __user *ubuf,
200                                         compat_size_t count,
201                                         unsigned long poshi,
202                                         unsigned long poslo)
203 {
204         return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
205 }
206
207 asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
208                                          char __user *ubuf,
209                                          compat_size_t count,
210                                          unsigned long poshi,
211                                          unsigned long poslo)
212 {
213         return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
214 }
215
216 asmlinkage long compat_sys_readahead(int fd,
217                                      unsigned long offhi,
218                                      unsigned long offlo,
219                                      compat_size_t count)
220 {
221         return sys_readahead(fd, (offhi << 32) | offlo, count);
222 }
223
224 long compat_sys_fadvise64(int fd,
225                           unsigned long offhi,
226                           unsigned long offlo,
227                           compat_size_t len, int advice)
228 {
229         return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
230 }
231
232 long compat_sys_fadvise64_64(int fd,
233                              unsigned long offhi, unsigned long offlo,
234                              unsigned long lenhi, unsigned long lenlo,
235                              int advice)
236 {
237         return sys_fadvise64_64(fd,
238                                 (offhi << 32) | offlo,
239                                 (lenhi << 32) | lenlo,
240                                 advice);
241 }
242
243 long sys32_sync_file_range(unsigned int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, unsigned int flags)
244 {
245         return sys_sync_file_range(fd,
246                                    (off_high << 32) | off_low,
247                                    (nb_high << 32) | nb_low,
248                                    flags);
249 }
250
251 asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
252                                      u32 lenhi, u32 lenlo)
253 {
254         return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
255                              ((loff_t)lenhi << 32) | lenlo);
256 }