2 * sys_parisc32.c: Conversion between 32bit and 64bit native syscalls.
4 * Copyright (C) 2000-2001 Hewlett Packard Company
5 * Copyright (C) 2000 John Marvin
6 * Copyright (C) 2001 Matthew Wilcox
8 * These routines maintain argument size conversion between 32bit and 64bit
9 * environment. Based heavily on sys_ia32.c and sys_sparc32.c.
12 #include <linux/compat.h>
13 #include <linux/kernel.h>
14 #include <linux/sched.h>
17 #include <linux/file.h>
18 #include <linux/signal.h>
19 #include <linux/resource.h>
20 #include <linux/times.h>
21 #include <linux/utsname.h>
22 #include <linux/time.h>
23 #include <linux/smp.h>
24 #include <linux/smp_lock.h>
25 #include <linux/sem.h>
26 #include <linux/msg.h>
27 #include <linux/shm.h>
28 #include <linux/slab.h>
29 #include <linux/uio.h>
30 #include <linux/nfs_fs.h>
31 #include <linux/ncp_fs.h>
32 #include <linux/sunrpc/svc.h>
33 #include <linux/nfsd/nfsd.h>
34 #include <linux/nfsd/cache.h>
35 #include <linux/nfsd/xdr.h>
36 #include <linux/nfsd/syscall.h>
37 #include <linux/poll.h>
38 #include <linux/personality.h>
39 #include <linux/stat.h>
40 #include <linux/highmem.h>
41 #include <linux/highuid.h>
42 #include <linux/mman.h>
43 #include <linux/binfmts.h>
44 #include <linux/namei.h>
45 #include <linux/vfs.h>
46 #include <linux/ptrace.h>
47 #include <linux/swap.h>
48 #include <linux/syscalls.h>
50 #include <asm/types.h>
51 #include <asm/uaccess.h>
52 #include <asm/mmu_context.h>
59 #define DBG(x) printk x
65 * sys32_execve() executes a new program.
68 asmlinkage int sys32_execve(struct pt_regs *regs)
73 DBG(("sys32_execve(%p) r26 = 0x%lx\n", regs, regs->gr[26]));
74 filename = getname((const char __user *) regs->gr[26]);
75 error = PTR_ERR(filename);
78 error = compat_do_execve(filename, compat_ptr(regs->gr[25]),
79 compat_ptr(regs->gr[24]), regs);
86 asmlinkage long sys32_unimplemented(int r26, int r25, int r24, int r23,
87 int r22, int r21, int r20)
89 printk(KERN_ERR "%s(%d): Unimplemented 32 on 64 syscall #%d!\n",
90 current->comm, current->pid, r20);
96 struct __sysctl_args32 {
106 asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
108 #ifndef CONFIG_SYSCTL_SYSCALL
111 struct __sysctl_args32 tmp;
113 unsigned int oldlen32;
114 size_t oldlen, __user *oldlenp = NULL;
115 unsigned long addr = (((long __force)&args->__unused[0]) + 7) & ~7;
117 DBG(("sysctl32(%p)\n", args));
119 if (copy_from_user(&tmp, args, sizeof(tmp)))
122 if (tmp.oldval && tmp.oldlenp) {
123 /* Duh, this is ugly and might not work if sysctl_args
124 is in read-only memory, but do_sysctl does indirectly
125 a lot of uaccess in both directions and we'd have to
126 basically copy the whole sysctl.c here, and
127 glibc's __sysctl uses rw memory for the structure
129 /* a possibly better hack than this, which will avoid the
130 * problem if the struct is read only, is to push the
131 * 'oldlen' value out to the user's stack instead. -PB
133 if (get_user(oldlen32, (u32 *)(u64)tmp.oldlenp))
136 if (put_user(oldlen, (size_t *)addr))
138 oldlenp = (size_t *)addr;
142 error = do_sysctl((int __user *)(u64)tmp.name, tmp.nlen,
143 (void __user *)(u64)tmp.oldval, oldlenp,
144 (void __user *)(u64)tmp.newval, tmp.newlen);
148 if (get_user(oldlen, (size_t *)addr)) {
152 if (put_user(oldlen32, (u32 *)(u64)tmp.oldlenp))
156 if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
163 #endif /* CONFIG_SYSCTL */
165 asmlinkage long sys32_sched_rr_get_interval(pid_t pid,
166 struct compat_timespec __user *interval)
171 KERNEL_SYSCALL(ret, sys_sched_rr_get_interval, pid, (struct timespec __user *)&t);
172 if (put_compat_timespec(&t, interval))
177 /*** copied from mips64 ***/
179 * Ooo, nasty. We need here to frob 32-bit unsigned longs to
180 * 64-bit unsigned longs.
184 get_fd_set32(unsigned long n, u32 *ufdset, unsigned long *fdset)
186 n = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32));
190 if (!access_ok(VERIFY_WRITE, ufdset, n*sizeof(u32)))
197 __get_user(l, ufdset);
198 __get_user(h, ufdset+1);
200 *fdset++ = h << 32 | l;
204 __get_user(*fdset, ufdset);
206 /* Tricky, must clear full unsigned long in the
207 * kernel fdset at the end, this makes sure that
210 memset(fdset, 0, ((n + 1) & ~1)*sizeof(u32));
216 set_fd_set32(unsigned long n, u32 *ufdset, unsigned long *fdset)
219 n = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32));
230 __put_user(l, ufdset);
231 __put_user(h, ufdset+1);
236 __put_user(*fdset, ufdset);
244 asmlinkage long sys32_msgsnd(int msqid,
245 struct msgbuf32 __user *umsgp32,
246 size_t msgsz, int msgflg)
249 struct msgbuf32 mb32;
252 if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
255 err = get_user(mb32.mtype, &umsgp32->mtype);
256 mb->mtype = mb32.mtype;
257 err |= copy_from_user(mb->mtext, &umsgp32->mtext, msgsz);
262 KERNEL_SYSCALL(err, sys_msgsnd, msqid, (struct msgbuf __user *)mb, msgsz, msgflg);
268 asmlinkage long sys32_msgrcv(int msqid,
269 struct msgbuf32 __user *umsgp32,
270 size_t msgsz, long msgtyp, int msgflg)
273 struct msgbuf32 mb32;
276 if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
279 KERNEL_SYSCALL(err, sys_msgrcv, msqid, (struct msgbuf __user *)mb, msgsz, msgtyp, msgflg);
283 mb32.mtype = mb->mtype;
284 err = put_user(mb32.mtype, &umsgp32->mtype);
285 err |= copy_to_user(&umsgp32->mtext, mb->mtext, len);
296 asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, s32 count)
298 mm_segment_t old_fs = get_fs();
302 if (offset && get_user(of, offset))
306 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
309 if (offset && put_user(of, offset))
315 asmlinkage int sys32_sendfile64(int out_fd, int in_fd, compat_loff_t __user *offset, s32 count)
317 mm_segment_t old_fs = get_fs();
321 if (offset && get_user(lof, offset))
325 ret = sys_sendfile64(out_fd, in_fd, offset ? (loff_t __user *)&lof : NULL, count);
328 if (offset && put_user(lof, offset))
335 /* lseek() needs a wrapper because 'offset' can be negative, but the top
336 * half of the argument has been zeroed by syscall.S.
339 asmlinkage int sys32_lseek(unsigned int fd, int offset, unsigned int origin)
341 return sys_lseek(fd, offset, origin);
344 asmlinkage long sys32_semctl(int semid, int semnum, int cmd, union semun arg)
349 /* Ugh. arg is a union of int,ptr,ptr,ptr, so is 8 bytes.
350 * The int should be in the first 4, but our argument
351 * frobbing has left it in the last 4.
353 u.val = *((int *)&arg + 1);
354 return sys_semctl (semid, semnum, cmd, u);
356 return sys_semctl (semid, semnum, cmd, arg);
359 long sys32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf,
362 return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,
366 asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
367 u32 lenhi, u32 lenlo)
369 return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
370 ((loff_t)lenhi << 32) | lenlo);