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authorPaul Mackerras <paulus@samba.org>2005-10-17 06:10:13 -0400
committerPaul Mackerras <paulus@samba.org>2005-10-17 06:10:13 -0400
commit30286ef6e044bc3d9019c3d8b900572e3fa05e65 (patch)
tree4d73bf0eb0da75d3c52613325d4085f139efdd39 /arch/ppc/kernel/syscalls.c
parent30cd4a4e9c25e154ba087848a839bd0c6d024092 (diff)
powerpc: Merge syscalls.c and sys_ppc32.c.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/ppc/kernel/syscalls.c')
-rw-r--r--arch/ppc/kernel/syscalls.c268
1 files changed, 0 insertions, 268 deletions
diff --git a/arch/ppc/kernel/syscalls.c b/arch/ppc/kernel/syscalls.c
deleted file mode 100644
index 127f040de9de..000000000000
--- a/arch/ppc/kernel/syscalls.c
+++ /dev/null
@@ -1,268 +0,0 @@
1/*
2 * arch/ppc/kernel/sys_ppc.c
3 *
4 * PowerPC version
5 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
6 *
7 * Derived from "arch/i386/kernel/sys_i386.c"
8 * Adapted from the i386 version by Gary Thomas
9 * Modified by Cort Dougan (cort@cs.nmt.edu)
10 * and Paul Mackerras (paulus@cs.anu.edu.au).
11 *
12 * This file contains various random system calls that
13 * have a non-standard calling sequence on the Linux/PPC
14 * platform.
15 *
16 * This program is free software; you can redistribute it and/or
17 * modify it under the terms of the GNU General Public License
18 * as published by the Free Software Foundation; either version
19 * 2 of the License, or (at your option) any later version.
20 *
21 */
22
23#include <linux/errno.h>
24#include <linux/sched.h>
25#include <linux/mm.h>
26#include <linux/smp.h>
27#include <linux/smp_lock.h>
28#include <linux/sem.h>
29#include <linux/msg.h>
30#include <linux/shm.h>
31#include <linux/stat.h>
32#include <linux/syscalls.h>
33#include <linux/mman.h>
34#include <linux/sys.h>
35#include <linux/ipc.h>
36#include <linux/utsname.h>
37#include <linux/file.h>
38#include <linux/unistd.h>
39
40#include <asm/uaccess.h>
41#include <asm/ipc.h>
42#include <asm/semaphore.h>
43
44
45/*
46 * sys_ipc() is the de-multiplexer for the SysV IPC calls..
47 *
48 * This is really horribly ugly.
49 */
50int
51sys_ipc (uint call, int first, int second, int third, void __user *ptr, long fifth)
52{
53 int version, ret;
54
55 version = call >> 16; /* hack for backward compatibility */
56 call &= 0xffff;
57
58 ret = -ENOSYS;
59 switch (call) {
60 case SEMOP:
61 ret = sys_semtimedop (first, (struct sembuf __user *)ptr,
62 second, NULL);
63 break;
64 case SEMTIMEDOP:
65 ret = sys_semtimedop (first, (struct sembuf __user *)ptr,
66 second, (const struct timespec __user *) fifth);
67 break;
68 case SEMGET:
69 ret = sys_semget (first, second, third);
70 break;
71 case SEMCTL: {
72 union semun fourth;
73
74 if (!ptr)
75 break;
76 if ((ret = access_ok(VERIFY_READ, ptr, sizeof(long)) ? 0 : -EFAULT)
77 || (ret = get_user(fourth.__pad, (void __user *__user *)ptr)))
78 break;
79 ret = sys_semctl (first, second, third, fourth);
80 break;
81 }
82 case MSGSND:
83 ret = sys_msgsnd (first, (struct msgbuf __user *) ptr, second, third);
84 break;
85 case MSGRCV:
86 switch (version) {
87 case 0: {
88 struct ipc_kludge tmp;
89
90 if (!ptr)
91 break;
92 if ((ret = access_ok(VERIFY_READ, ptr, sizeof(tmp)) ? 0 : -EFAULT)
93 || (ret = copy_from_user(&tmp,
94 (struct ipc_kludge __user *) ptr,
95 sizeof (tmp)) ? -EFAULT : 0))
96 break;
97 ret = sys_msgrcv (first, tmp.msgp, second, tmp.msgtyp,
98 third);
99 break;
100 }
101 default:
102 ret = sys_msgrcv (first, (struct msgbuf __user *) ptr,
103 second, fifth, third);
104 break;
105 }
106 break;
107 case MSGGET:
108 ret = sys_msgget ((key_t) first, second);
109 break;
110 case MSGCTL:
111 ret = sys_msgctl (first, second, (struct msqid_ds __user *) ptr);
112 break;
113 case SHMAT: {
114 ulong raddr;
115
116 if ((ret = access_ok(VERIFY_WRITE, (ulong __user *) third,
117 sizeof(ulong)) ? 0 : -EFAULT))
118 break;
119 ret = do_shmat (first, (char __user *) ptr, second, &raddr);
120 if (ret)
121 break;
122 ret = put_user (raddr, (ulong __user *) third);
123 break;
124 }
125 case SHMDT:
126 ret = sys_shmdt ((char __user *)ptr);
127 break;
128 case SHMGET:
129 ret = sys_shmget (first, second, third);
130 break;
131 case SHMCTL:
132 ret = sys_shmctl (first, second, (struct shmid_ds __user *) ptr);
133 break;
134 }
135
136 return ret;
137}
138
139/*
140 * sys_pipe() is the normal C calling standard for creating
141 * a pipe. It's not the way unix traditionally does this, though.
142 */
143int sys_pipe(int __user *fildes)
144{
145 int fd[2];
146 int error;
147
148 error = do_pipe(fd);
149 if (!error) {
150 if (copy_to_user(fildes, fd, 2*sizeof(int)))
151 error = -EFAULT;
152 }
153 return error;
154}
155
156static inline unsigned long
157do_mmap2(unsigned long addr, size_t len,
158 unsigned long prot, unsigned long flags,
159 unsigned long fd, unsigned long pgoff)
160{
161 struct file * file = NULL;
162 int ret = -EBADF;
163
164 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
165 if (!(flags & MAP_ANONYMOUS)) {
166 if (!(file = fget(fd)))
167 goto out;
168 }
169
170 down_write(&current->mm->mmap_sem);
171 ret = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
172 up_write(&current->mm->mmap_sem);
173 if (file)
174 fput(file);
175out:
176 return ret;
177}
178
179unsigned long sys_mmap2(unsigned long addr, size_t len,
180 unsigned long prot, unsigned long flags,
181 unsigned long fd, unsigned long pgoff)
182{
183 return do_mmap2(addr, len, prot, flags, fd, pgoff);
184}
185
186unsigned long sys_mmap(unsigned long addr, size_t len,
187 unsigned long prot, unsigned long flags,
188 unsigned long fd, off_t offset)
189{
190 int err = -EINVAL;
191
192 if (offset & ~PAGE_MASK)
193 goto out;
194
195 err = do_mmap2(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
196out:
197 return err;
198}
199
200/*
201 * Due to some executables calling the wrong select we sometimes
202 * get wrong args. This determines how the args are being passed
203 * (a single ptr to them all args passed) then calls
204 * sys_select() with the appropriate args. -- Cort
205 */
206int
207ppc_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp, struct timeval __user *tvp)
208{
209 if ( (unsigned long)n >= 4096 )
210 {
211 unsigned long __user *buffer = (unsigned long __user *)n;
212 if (!access_ok(VERIFY_READ, buffer, 5*sizeof(unsigned long))
213 || __get_user(n, buffer)
214 || __get_user(inp, ((fd_set __user * __user *)(buffer+1)))
215 || __get_user(outp, ((fd_set __user * __user *)(buffer+2)))
216 || __get_user(exp, ((fd_set __user * __user *)(buffer+3)))
217 || __get_user(tvp, ((struct timeval __user * __user *)(buffer+4))))
218 return -EFAULT;
219 }
220 return sys_select(n, inp, outp, exp, tvp);
221}
222
223int sys_uname(struct old_utsname __user * name)
224{
225 int err = -EFAULT;
226
227 down_read(&uts_sem);
228 if (name && !copy_to_user(name, &system_utsname, sizeof (*name)))
229 err = 0;
230 up_read(&uts_sem);
231 return err;
232}
233
234int sys_olduname(struct oldold_utsname __user * name)
235{
236 int error;
237
238 if (!name)
239 return -EFAULT;
240 if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname)))
241 return -EFAULT;
242
243 down_read(&uts_sem);
244 error = __copy_to_user(&name->sysname,&system_utsname.sysname,__OLD_UTS_LEN);
245 error -= __put_user(0,name->sysname+__OLD_UTS_LEN);
246 error -= __copy_to_user(&name->nodename,&system_utsname.nodename,__OLD_UTS_LEN);
247 error -= __put_user(0,name->nodename+__OLD_UTS_LEN);
248 error -= __copy_to_user(&name->release,&system_utsname.release,__OLD_UTS_LEN);
249 error -= __put_user(0,name->release+__OLD_UTS_LEN);
250 error -= __copy_to_user(&name->version,&system_utsname.version,__OLD_UTS_LEN);
251 error -= __put_user(0,name->version+__OLD_UTS_LEN);
252 error -= __copy_to_user(&name->machine,&system_utsname.machine,__OLD_UTS_LEN);
253 error = __put_user(0,name->machine+__OLD_UTS_LEN);
254 up_read(&uts_sem);
255
256 error = error ? -EFAULT : 0;
257 return error;
258}
259
260/*
261 * We put the arguments in a different order so we only use 6
262 * registers for arguments, rather than 7 as sys_fadvise64_64 needs
263 * (because `offset' goes in r5/r6).
264 */
265long ppc_fadvise64_64(int fd, int advice, loff_t offset, loff_t len)
266{
267 return sys_fadvise64_64(fd, offset, len, advice);
268}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-11 15:49:26 -0500