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/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>
49 #include <asm/types.h>
50 #include <asm/uaccess.h>
51 #include <asm/mmu_context.h>
58 #define DBG(x) printk x
64 * sys32_execve() executes a new program.
67 asmlinkage int sys32_execve(struct pt_regs *regs)
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);
77 error = compat_do_execve(filename, compat_ptr(regs->gr[25]),
78 compat_ptr(regs->gr[24]), regs);
85 asmlinkage long sys32_unimplemented(int r26, int r25, int r24, int r23,
86 int r22, int r21, int r20)
88 printk(KERN_ERR "%s(%d): Unimplemented 32 on 64 syscall #%d!\n",
89 current->comm, current->pid, r20);
93 asmlinkage long sys32_sched_rr_get_interval(pid_t pid,
94 struct compat_timespec __user *interval)
99 KERNEL_SYSCALL(ret, sys_sched_rr_get_interval, pid, (struct timespec __user *)&t);
100 if (put_compat_timespec(&t, interval))
110 asmlinkage long sys32_msgsnd(int msqid,
111 struct msgbuf32 __user *umsgp32,
112 size_t msgsz, int msgflg)
115 struct msgbuf32 mb32;
118 if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
121 err = get_user(mb32.mtype, &umsgp32->mtype);
122 mb->mtype = mb32.mtype;
123 err |= copy_from_user(mb->mtext, &umsgp32->mtext, msgsz);
128 KERNEL_SYSCALL(err, sys_msgsnd, msqid, (struct msgbuf __user *)mb, msgsz, msgflg);
134 asmlinkage long sys32_msgrcv(int msqid,
135 struct msgbuf32 __user *umsgp32,
136 size_t msgsz, long msgtyp, int msgflg)
139 struct msgbuf32 mb32;
142 if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
145 KERNEL_SYSCALL(err, sys_msgrcv, msqid, (struct msgbuf __user *)mb, msgsz, msgtyp, msgflg);
149 mb32.mtype = mb->mtype;
150 err = put_user(mb32.mtype, &umsgp32->mtype);
151 err |= copy_to_user(&umsgp32->mtext, mb->mtext, len);
162 asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, s32 count)
164 mm_segment_t old_fs = get_fs();
168 if (offset && get_user(of, offset))
172 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
175 if (offset && put_user(of, offset))
181 asmlinkage int sys32_sendfile64(int out_fd, int in_fd, compat_loff_t __user *offset, s32 count)
183 mm_segment_t old_fs = get_fs();
187 if (offset && get_user(lof, offset))
191 ret = sys_sendfile64(out_fd, in_fd, offset ? (loff_t __user *)&lof : NULL, count);
194 if (offset && put_user(lof, offset))
201 /* lseek() needs a wrapper because 'offset' can be negative, but the top
202 * half of the argument has been zeroed by syscall.S.
205 asmlinkage int sys32_lseek(unsigned int fd, int offset, unsigned int origin)
207 return sys_lseek(fd, offset, origin);
210 asmlinkage long sys32_semctl(int semid, int semnum, int cmd, union semun arg)
215 /* Ugh. arg is a union of int,ptr,ptr,ptr, so is 8 bytes.
216 * The int should be in the first 4, but our argument
217 * frobbing has left it in the last 4.
219 u.val = *((int *)&arg + 1);
220 return sys_semctl (semid, semnum, cmd, u);
222 return sys_semctl (semid, semnum, cmd, arg);
225 long sys32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf,
228 return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,
232 asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
233 u32 lenhi, u32 lenlo)
235 return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
236 ((loff_t)lenhi << 32) | lenlo);