1 /* sys_sparc32.c: Conversion between 32bit and 64bit native syscalls.
3 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
4 * Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net)
6 * These routines maintain argument size conversion between 32bit and 64bit
10 #include <linux/kernel.h>
11 #include <linux/sched.h>
12 #include <linux/capability.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>
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>
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>
53 asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth)
57 version = call >> 16; /* hack for backward compatibility */
63 /* sign extend semid */
64 return compat_sys_semtimedop((int)first,
65 compat_ptr(ptr), second,
67 /* else fall through for normal semop() */
69 /* struct sembuf is the same on 32 and 64bit :)) */
70 /* sign extend semid */
71 return sys_semtimedop((int)first, compat_ptr(ptr), second,
74 /* sign extend key, nsems */
75 return sys_semget((int)first, (int)second, third);
77 /* sign extend semid, semnum */
78 return compat_sys_semctl((int)first, (int)second, third,
82 /* sign extend msqid */
83 return compat_sys_msgsnd((int)first, (int)second, third,
86 /* sign extend msqid, msgtyp */
87 return compat_sys_msgrcv((int)first, second, (int)fifth,
88 third, version, compat_ptr(ptr));
91 return sys_msgget((int)first, second);
93 /* sign extend msqid */
94 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
97 /* sign extend shmid */
98 return compat_sys_shmat((int)first, second, third, version,
101 return sys_shmdt(compat_ptr(ptr));
103 /* sign extend key_t */
104 return sys_shmget((int)first, second, third);
106 /* sign extend shmid */
107 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
117 asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
122 return sys_truncate(path, (high << 32) | low);
125 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
130 return sys_ftruncate(fd, (high << 32) | low);
133 static int cp_compat_stat64(struct kstat *stat,
134 struct compat_stat64 __user *statbuf)
138 err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev);
139 err |= put_user(stat->ino, &statbuf->st_ino);
140 err |= put_user(stat->mode, &statbuf->st_mode);
141 err |= put_user(stat->nlink, &statbuf->st_nlink);
142 err |= put_user(from_kuid_munged(current_user_ns(), stat->uid), &statbuf->st_uid);
143 err |= put_user(from_kgid_munged(current_user_ns(), stat->gid), &statbuf->st_gid);
144 err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev);
145 err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]);
146 err |= put_user(stat->size, &statbuf->st_size);
147 err |= put_user(stat->blksize, &statbuf->st_blksize);
148 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]);
149 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]);
150 err |= put_user(stat->blocks, &statbuf->st_blocks);
151 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
152 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
153 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
154 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
155 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
156 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
157 err |= put_user(0, &statbuf->__unused4);
158 err |= put_user(0, &statbuf->__unused5);
163 asmlinkage long compat_sys_stat64(const char __user * filename,
164 struct compat_stat64 __user *statbuf)
167 int error = vfs_stat(filename, &stat);
170 error = cp_compat_stat64(&stat, statbuf);
174 asmlinkage long compat_sys_lstat64(const char __user * filename,
175 struct compat_stat64 __user *statbuf)
178 int error = vfs_lstat(filename, &stat);
181 error = cp_compat_stat64(&stat, statbuf);
185 asmlinkage long compat_sys_fstat64(unsigned int fd,
186 struct compat_stat64 __user * statbuf)
189 int error = vfs_fstat(fd, &stat);
192 error = cp_compat_stat64(&stat, statbuf);
196 asmlinkage long compat_sys_fstatat64(unsigned int dfd,
197 const char __user *filename,
198 struct compat_stat64 __user * statbuf, int flag)
203 error = vfs_fstatat(dfd, filename, &stat, flag);
206 return cp_compat_stat64(&stat, statbuf);
209 COMPAT_SYSCALL_DEFINE3(sparc_sigaction, int, sig,
210 struct compat_old_sigaction __user *,act,
211 struct compat_old_sigaction __user *,oact)
213 WARN_ON_ONCE(sig >= 0);
214 return compat_sys_sigaction(-sig, act, oact);
217 COMPAT_SYSCALL_DEFINE5(rt_sigaction, int, sig,
218 struct compat_sigaction __user *,act,
219 struct compat_sigaction __user *,oact,
220 void __user *,restorer,
221 compat_size_t,sigsetsize)
223 struct k_sigaction new_ka, old_ka;
225 compat_sigset_t set32;
227 /* XXX: Don't preclude handling different sized sigset_t's. */
228 if (sigsetsize != sizeof(compat_sigset_t))
232 u32 u_handler, u_restorer;
234 new_ka.ka_restorer = restorer;
235 ret = get_user(u_handler, &act->sa_handler);
236 new_ka.sa.sa_handler = compat_ptr(u_handler);
237 ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
238 sigset_from_compat(&new_ka.sa.sa_mask, &set32);
239 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
240 ret |= __get_user(u_restorer, &act->sa_restorer);
241 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
246 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
249 sigset_to_compat(&set32, &old_ka.sa.sa_mask);
250 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
251 ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
252 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
253 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
261 asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
267 return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
270 asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
276 return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
279 asmlinkage long compat_sys_readahead(int fd,
284 return sys_readahead(fd, (offhi << 32) | offlo, count);
287 long compat_sys_fadvise64(int fd,
290 compat_size_t len, int advice)
292 return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
295 long compat_sys_fadvise64_64(int fd,
296 unsigned long offhi, unsigned long offlo,
297 unsigned long lenhi, unsigned long lenlo,
300 return sys_fadvise64_64(fd,
301 (offhi << 32) | offlo,
302 (lenhi << 32) | lenlo,
306 long sys32_lookup_dcookie(unsigned long cookie_high,
307 unsigned long cookie_low,
308 char __user *buf, size_t len)
310 return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
314 long compat_sync_file_range(int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, int flags)
316 return sys_sync_file_range(fd,
317 (off_high << 32) | off_low,
318 (nb_high << 32) | nb_low,
322 asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
323 u32 lenhi, u32 lenlo)
325 return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
326 ((loff_t)lenhi << 32) | lenlo);