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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/mman.h>
33#include <linux/sys.h>
34#include <linux/ipc.h>
35#include <linux/utsname.h>
36#include <linux/file.h>
37#include <linux/init.h>
38#include <linux/personality.h>
39
40#include <asm/uaccess.h>
41#include <asm/ipc.h>
42#include <asm/semaphore.h>
43#include <asm/ppcdebug.h>
44
45#include <asm/time.h>
46
47extern unsigned long wall_jiffies;
48#define USEC_PER_SEC (1000000)
49
50void
51check_bugs(void)
52{
53}
54
55asmlinkage int sys_ioperm(unsigned long from, unsigned long num, int on)
56{
57 return -EIO;
58}
59
60
61
62
63
64
65asmlinkage int
66sys_ipc (uint call, int first, int second, long third, void *ptr, long fifth)
67{
68 int version, ret;
69
70 PPCDBG(PPCDBG_SYS64X, "sys_ipc - entered - pid=%ld current=%lx comm=%s \n", current->pid, current, current->comm);
71
72 version = call >> 16;
73 call &= 0xffff;
74
75 ret = -ENOSYS;
76 switch (call) {
77 case SEMOP:
78 ret = sys_semop (first, (struct sembuf *)ptr, second);
79 break;
80 case SEMGET:
81 ret = sys_semget (first, second, third);
82 break;
83 case SEMCTL: {
84 union semun fourth;
85
86 if (!ptr)
87 break;
88 if ((ret = verify_area (VERIFY_READ, ptr, sizeof(long)))
89 || (ret = get_user(fourth.__pad, (void **)ptr)))
90 break;
91 ret = sys_semctl (first, second, third, fourth);
92 break;
93 }
94 case MSGSND:
95 ret = sys_msgsnd (first, (struct msgbuf *) ptr, second, third);
96 break;
97 case MSGRCV:
98 switch (version) {
99 case 0: {
100 struct ipc_kludge tmp;
101
102 if (!ptr)
103 break;
104 if ((ret = verify_area (VERIFY_READ, ptr, sizeof(tmp)))
105 || (ret = copy_from_user(&tmp,
106 (struct ipc_kludge *) ptr,
107 sizeof (tmp))))
108 break;
109 ret = sys_msgrcv (first, (struct msgbuf *)tmp.msgp,
110 second, tmp.msgtyp, third);
111 break;
112 }
113 default:
114 ret = sys_msgrcv (first, (struct msgbuf *) ptr,
115 second, fifth, third);
116 break;
117 }
118 break;
119 case MSGGET:
120 ret = sys_msgget ((key_t) first, second);
121 break;
122 case MSGCTL:
123 ret = sys_msgctl (first, second, (struct msqid_ds *) ptr);
124 break;
125 case SHMAT:
126 switch (version) {
127 default: {
128 ulong raddr;
129
130 if ((ret = verify_area(VERIFY_WRITE, (ulong*) third,
131 sizeof(ulong))))
132 break;
133 ret = sys_shmat (first, (char *) ptr, second, &raddr);
134 if (ret)
135 break;
136 ret = put_user (raddr, (ulong *) third);
137 break;
138 }
139 case 1:
140 if (!segment_eq(get_fs(), get_ds()))
141 break;
142 ret = sys_shmat (first, (char *) ptr, second,
143 (ulong *) third);
144 break;
145 }
146 break;
147 case SHMDT:
148 ret = sys_shmdt ((char *)ptr);
149 break;
150 case SHMGET:
151 ret = sys_shmget (first, second, third);
152 break;
153 case SHMCTL:
154 ret = sys_shmctl (first, second, (struct shmid_ds *) ptr);
155 break;
156 }
157
158 PPCDBG(PPCDBG_SYS64X, "sys_ipc - exited - pid=%ld current=%lx comm=%s \n", current->pid, current, current->comm);
159 return ret;
160}
161
162
163
164
165
166asmlinkage int sys_pipe(int *fildes)
167{
168 int fd[2];
169 int error;
170
171 PPCDBG(PPCDBG_SYS64X, "sys_pipe - entered - pid=%ld current=%lx comm=%s \n", current->pid, current, current->comm);
172
173 error = do_pipe(fd);
174 if (!error) {
175 if (copy_to_user(fildes, fd, 2*sizeof(int)))
176 error = -EFAULT;
177 }
178
179 PPCDBG(PPCDBG_SYS64X, "sys_pipe - exited - pid=%ld current=%lx comm=%s \n", current->pid, current, current->comm);
180 return error;
181}
182
183asmlinkage unsigned long sys_mmap(unsigned long addr, size_t len,
184 unsigned long prot, unsigned long flags,
185 unsigned long fd, off_t offset)
186{
187 struct file * file = NULL;
188 unsigned long ret = -EBADF;
189
190 PPCDBG(PPCDBG_SYS64X, "sys_mmap - entered - addr=%lx, len=%lx - pid=%ld, comm=%s \n", addr, len, current->pid, current->comm);
191
192 if (!(flags & MAP_ANONYMOUS)) {
193 if (!(file = fget(fd)))
194 goto out;
195 }
196
197 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
198 down_write(¤t->mm->mmap_sem);
199 ret = do_mmap(file, addr, len, prot, flags, offset);
200 up_write(¤t->mm->mmap_sem);
201 if (file)
202 fput(file);
203
204out:
205
206 PPCDBG(PPCDBG_SYS64X, "sys_mmap - exited - ret=%x \n", ret);
207
208 return ret;
209}
210
211asmlinkage int sys_pause(void)
212{
213
214 PPCDBG(PPCDBG_SYS64X, "sys_pause - entered - pid=%ld current=%lx comm=%s \n", current->pid, current, current->comm);
215 current->state = TASK_INTERRUPTIBLE;
216 schedule();
217
218 PPCDBG(PPCDBG_SYS64X, "sys_pause - exited - pid=%ld current=%lx comm=%s \n", current->pid, current, current->comm);
219 return -ERESTARTNOHAND;
220}
221
222static int __init set_fakeppc(char *str)
223{
224 if (*str)
225 return 0;
226 init_task.personality = PER_LINUX32;
227 return 1;
228}
229__setup("fakeppc", set_fakeppc);
230
231asmlinkage int sys_uname(struct old_utsname * name)
232{
233 int err = -EFAULT;
234
235 PPCDBG(PPCDBG_SYS64X, "sys_uname - entered - pid=%ld current=%lx comm=%s \n", current->pid, current, current->comm);
236
237 down_read(&uts_sem);
238 if (name && !copy_to_user(name, &system_utsname, sizeof (*name)))
239 err = 0;
240 up_read(&uts_sem);
241
242 PPCDBG(PPCDBG_SYS64X, "sys_uname - exited - pid=%ld current=%lx comm=%s \n", current->pid, current, current->comm);
243 return err;
244}
245
246asmlinkage int sys_olduname(struct oldold_utsname * name)
247{
248 int error;
249
250 PPCDBG(PPCDBG_SYS64X, "sys_olduname - entered - pid=%ld current=%lx comm=%s \n", current->pid, current, current->comm);
251
252 if (!name)
253 return -EFAULT;
254 if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname)))
255 return -EFAULT;
256
257 down_read(&uts_sem);
258 error = __copy_to_user(&name->sysname,&system_utsname.sysname,__OLD_UTS_LEN);
259 error -= __put_user(0,name->sysname+__OLD_UTS_LEN);
260 error -= __copy_to_user(&name->nodename,&system_utsname.nodename,__OLD_UTS_LEN);
261 error -= __put_user(0,name->nodename+__OLD_UTS_LEN);
262 error -= __copy_to_user(&name->release,&system_utsname.release,__OLD_UTS_LEN);
263 error -= __put_user(0,name->release+__OLD_UTS_LEN);
264 error -= __copy_to_user(&name->version,&system_utsname.version,__OLD_UTS_LEN);
265 error -= __put_user(0,name->version+__OLD_UTS_LEN);
266 error -= __copy_to_user(&name->machine,&system_utsname.machine,__OLD_UTS_LEN);
267 error = __put_user(0,name->machine+__OLD_UTS_LEN);
268 up_read(&uts_sem);
269
270 error = error ? -EFAULT : 0;
271
272 PPCDBG(PPCDBG_SYS64X, "sys_olduname - exited - pid=%ld current=%lx comm=%s \n", current->pid, current, current->comm);
273 return error;
274}
275
276asmlinkage time_t sys64_time(time_t* tloc)
277{
278 time_t secs;
279 time_t usecs;
280
281 long tb_delta = tb_ticks_since(tb_last_stamp);
282 tb_delta += (jiffies - wall_jiffies) * tb_ticks_per_jiffy;
283
284 secs = xtime.tv_sec;
285 usecs = xtime.tv_usec + tb_delta / tb_ticks_per_usec;
286 while (usecs >= USEC_PER_SEC) {
287 ++secs;
288 usecs -= USEC_PER_SEC;
289 }
290
291 if (tloc) {
292 if (put_user(secs,tloc))
293 secs = -EFAULT;
294 }
295
296 return secs;
297}
298
