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Linux 2.6.13-rc4
[linux-2.6/next.git] / arch / sparc64 / kernel / sys_sunos32.c
blobd0592ed54ea5699c77251e09d23fc595bc865d93
1 /* $Id: sys_sunos32.c,v 1.64 2002/02/09 19:49:31 davem Exp $
2 * sys_sunos32.c: SunOS binary compatibility layer on sparc64.
3 *
4 * Copyright (C) 1995, 1996, 1997 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (C) 1995 Miguel de Icaza (miguel@nuclecu.unam.mx)
6 *
7 * Based upon preliminary work which is:
8 *
9 * Copyright (C) 1995 Adrian M. Rodriguez (adrian@remus.rutgers.edu)
10 */
11
12 #include <linux/kernel.h>
13 #include <linux/sched.h>
14 #include <linux/types.h>
15 #include <linux/compat.h>
16 #include <linux/mman.h>
17 #include <linux/mm.h>
18 #include <linux/swap.h>
19 #include <linux/fs.h>
20 #include <linux/file.h>
21 #include <linux/resource.h>
22 #include <linux/ipc.h>
23 #include <linux/shm.h>
24 #include <linux/msg.h>
25 #include <linux/sem.h>
26 #include <linux/signal.h>
27 #include <linux/uio.h>
28 #include <linux/utsname.h>
29 #include <linux/major.h>
30 #include <linux/stat.h>
31 #include <linux/slab.h>
32 #include <linux/pagemap.h>
33 #include <linux/errno.h>
34 #include <linux/smp.h>
35 #include <linux/smp_lock.h>
36 #include <linux/syscalls.h>
37
38 #include <asm/uaccess.h>
39 #include <asm/page.h>
40 #include <asm/pgtable.h>
41 #include <asm/pconf.h>
42 #include <asm/idprom.h> /* for gethostid() */
43 #include <asm/unistd.h>
44 #include <asm/system.h>
45
46 /* For the nfs mount emulation */
47 #include <linux/socket.h>
48 #include <linux/in.h>
49 #include <linux/nfs.h>
50 #include <linux/nfs2.h>
51 #include <linux/nfs_mount.h>
52
53 /* for sunos_select */
54 #include <linux/time.h>
55 #include <linux/personality.h>
56
57 /* For SOCKET_I */
58 #include <linux/socket.h>
59 #include <net/sock.h>
60 #include <net/compat.h>
61
62 #define SUNOS_NR_OPEN 256
63
64 asmlinkage u32 sunos_mmap(u32 addr, u32 len, u32 prot, u32 flags, u32 fd, u32 off)
65 {
66 struct file *file = NULL;
67 unsigned long retval, ret_type;
68
69 if (flags & MAP_NORESERVE) {
70 static int cnt;
71 if (cnt++ < 10)
72 printk("%s: unimplemented SunOS MAP_NORESERVE mmap() flag\n",
73 current->comm);
74 flags &= ~MAP_NORESERVE;
75 }
76 retval = -EBADF;
77 if (!(flags & MAP_ANONYMOUS)) {
78 struct inode * inode;
79 if (fd >= SUNOS_NR_OPEN)
80 goto out;
81 file = fget(fd);
82 if (!file)
83 goto out;
84 inode = file->f_dentry->d_inode;
85 if (imajor(inode) == MEM_MAJOR && iminor(inode) == 5) {
86 flags |= MAP_ANONYMOUS;
87 fput(file);
88 file = NULL;
89 }
90 }
91
92 retval = -EINVAL;
93 if (!(flags & MAP_FIXED))
94 addr = 0;
95 else if (len > 0xf0000000 || addr > 0xf0000000 - len)
96 goto out_putf;
97 ret_type = flags & _MAP_NEW;
98 flags &= ~_MAP_NEW;
99
100 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
101 down_write(&current->mm->mmap_sem);
102 retval = do_mmap(file,
103 (unsigned long) addr, (unsigned long) len,
104 (unsigned long) prot, (unsigned long) flags,
105 (unsigned long) off);
106 up_write(&current->mm->mmap_sem);
107 if (!ret_type)
108 retval = ((retval < 0xf0000000) ? 0 : retval);
109 out_putf:
110 if (file)
111 fput(file);
112 out:
113 return (u32) retval;
114 }
115
116 asmlinkage int sunos_mctl(u32 addr, u32 len, int function, u32 arg)
117 {
118 return 0;
119 }
120
121 asmlinkage int sunos_brk(u32 baddr)
122 {
123 int freepages, retval = -ENOMEM;
124 unsigned long rlim;
125 unsigned long newbrk, oldbrk, brk = (unsigned long) baddr;
126
127 down_write(&current->mm->mmap_sem);
128 if (brk < current->mm->end_code)
129 goto out;
130 newbrk = PAGE_ALIGN(brk);
131 oldbrk = PAGE_ALIGN(current->mm->brk);
132 retval = 0;
133 if (oldbrk == newbrk) {
134 current->mm->brk = brk;
135 goto out;
136 }
137 /* Always allow shrinking brk. */
138 if (brk <= current->mm->brk) {
139 current->mm->brk = brk;
140 do_munmap(current->mm, newbrk, oldbrk-newbrk);
141 goto out;
142 }
143 /* Check against rlimit and stack.. */
144 retval = -ENOMEM;
145 rlim = current->signal->rlim[RLIMIT_DATA].rlim_cur;
146 if (rlim >= RLIM_INFINITY)
147 rlim = ~0;
148 if (brk - current->mm->end_code > rlim)
149 goto out;
150 /* Check against existing mmap mappings. */
151 if (find_vma_intersection(current->mm, oldbrk, newbrk+PAGE_SIZE))
152 goto out;
153 /* stupid algorithm to decide if we have enough memory: while
154 * simple, it hopefully works in most obvious cases.. Easy to
155 * fool it, but this should catch most mistakes.
156 */
157 freepages = get_page_cache_size();
158 freepages >>= 1;
159 freepages += nr_free_pages();
160 freepages += nr_swap_pages;
161 freepages -= num_physpages >> 4;
162 freepages -= (newbrk-oldbrk) >> PAGE_SHIFT;
163 if (freepages < 0)
164 goto out;
165 /* Ok, we have probably got enough memory - let it rip. */
166 current->mm->brk = brk;
167 do_brk(oldbrk, newbrk-oldbrk);
168 retval = 0;
169 out:
170 up_write(&current->mm->mmap_sem);
171 return retval;
172 }
173
174 asmlinkage u32 sunos_sbrk(int increment)
175 {
176 int error, oldbrk;
177
178 /* This should do it hopefully... */
179 oldbrk = (int)current->mm->brk;
180 error = sunos_brk(((int) current->mm->brk) + increment);
181 if (!error)
182 error = oldbrk;
183 return error;
184 }
185
186 asmlinkage u32 sunos_sstk(int increment)
187 {
188 printk("%s: Call to sunos_sstk(increment<%d>) is unsupported\n",
189 current->comm, increment);
190
191 return (u32)-1;
192 }
193
194 /* Give hints to the kernel as to what paging strategy to use...
195 * Completely bogus, don't remind me.
196 */
197 #define VA_NORMAL 0 /* Normal vm usage expected */
198 #define VA_ABNORMAL 1 /* Abnormal/random vm usage probable */
199 #define VA_SEQUENTIAL 2 /* Accesses will be of a sequential nature */
200 #define VA_INVALIDATE 3 /* Page table entries should be flushed ??? */
201 static char *vstrings[] = {
202 "VA_NORMAL",
203 "VA_ABNORMAL",
204 "VA_SEQUENTIAL",
205 "VA_INVALIDATE",
206 };
207
208 asmlinkage void sunos_vadvise(u32 strategy)
209 {
210 static int count;
211
212 /* I wanna see who uses this... */
213 if (count++ < 5)
214 printk("%s: Advises us to use %s paging strategy\n",
215 current->comm,
216 strategy <= 3 ? vstrings[strategy] : "BOGUS");
217 }
218
219 /* This just wants the soft limit (ie. rlim_cur element) of the RLIMIT_NOFILE
220 * resource limit and is for backwards compatibility with older sunos
221 * revs.
222 */
223 asmlinkage int sunos_getdtablesize(void)
224 {
225 return SUNOS_NR_OPEN;
226 }
227
228
229 #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
230
231 asmlinkage u32 sunos_sigblock(u32 blk_mask)
232 {
233 u32 old;
234
235 spin_lock_irq(&current->sighand->siglock);
236 old = (u32) current->blocked.sig[0];
237 current->blocked.sig[0] |= (blk_mask & _BLOCKABLE);
238 recalc_sigpending();
239 spin_unlock_irq(&current->sighand->siglock);
240 return old;
241 }
242
243 asmlinkage u32 sunos_sigsetmask(u32 newmask)
244 {
245 u32 retval;
246
247 spin_lock_irq(&current->sighand->siglock);
248 retval = (u32) current->blocked.sig[0];
249 current->blocked.sig[0] = (newmask & _BLOCKABLE);
250 recalc_sigpending();
251 spin_unlock_irq(&current->sighand->siglock);
252 return retval;
253 }
254
255 /* SunOS getdents is very similar to the newer Linux (iBCS2 compliant) */
256 /* getdents system call, the format of the structure just has a different */
257 /* layout (d_off+d_ino instead of d_ino+d_off) */
258 struct sunos_dirent {
259 s32 d_off;
260 u32 d_ino;
261 u16 d_reclen;
262 u16 d_namlen;
263 char d_name[1];
264 };
265
266 struct sunos_dirent_callback {
267 struct sunos_dirent __user *curr;
268 struct sunos_dirent __user *previous;
269 int count;
270 int error;
271 };
272
273 #define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de)))
274 #define ROUND_UP(x) (((x)+sizeof(s32)-1) & ~(sizeof(s32)-1))
275
276 static int sunos_filldir(void * __buf, const char * name, int namlen,
277 loff_t offset, ino_t ino, unsigned int d_type)
278 {
279 struct sunos_dirent __user *dirent;
280 struct sunos_dirent_callback * buf = (struct sunos_dirent_callback *) __buf;
281 int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1);
282
283 buf->error = -EINVAL; /* only used if we fail.. */
284 if (reclen > buf->count)
285 return -EINVAL;
286 dirent = buf->previous;
287 if (dirent)
288 put_user(offset, &dirent->d_off);
289 dirent = buf->curr;
290 buf->previous = dirent;
291 put_user(ino, &dirent->d_ino);
292 put_user(namlen, &dirent->d_namlen);
293 put_user(reclen, &dirent->d_reclen);
294 if (copy_to_user(dirent->d_name, name, namlen))
295 return -EFAULT;
296 put_user(0, dirent->d_name + namlen);
297 dirent = (void __user *) dirent + reclen;
298 buf->curr = dirent;
299 buf->count -= reclen;
300 return 0;
301 }
302
303 asmlinkage int sunos_getdents(unsigned int fd, void __user *dirent, int cnt)
304 {
305 struct file * file;
306 struct sunos_dirent __user *lastdirent;
307 struct sunos_dirent_callback buf;
308 int error = -EBADF;
309
310 if (fd >= SUNOS_NR_OPEN)
311 goto out;
312
313 file = fget(fd);
314 if (!file)
315 goto out;
316
317 error = -EINVAL;
318 if (cnt < (sizeof(struct sunos_dirent) + 255))
319 goto out_putf;
320
321 buf.curr = (struct sunos_dirent __user *) dirent;
322 buf.previous = NULL;
323 buf.count = cnt;
324 buf.error = 0;
325
326 error = vfs_readdir(file, sunos_filldir, &buf);
327 if (error < 0)
328 goto out_putf;
329
330 lastdirent = buf.previous;
331 error = buf.error;
332 if (lastdirent) {
333 put_user(file->f_pos, &lastdirent->d_off);
334 error = cnt - buf.count;
335 }
336
337 out_putf:
338 fput(file);
339 out:
340 return error;
341 }
342
343 /* Old sunos getdirentries, severely broken compatibility stuff here. */
344 struct sunos_direntry {
345 u32 d_ino;
346 u16 d_reclen;
347 u16 d_namlen;
348 char d_name[1];
349 };
350
351 struct sunos_direntry_callback {
352 struct sunos_direntry __user *curr;
353 struct sunos_direntry __user *previous;
354 int count;
355 int error;
356 };
357
358 static int sunos_filldirentry(void * __buf, const char * name, int namlen,
359 loff_t offset, ino_t ino, unsigned int d_type)
360 {
361 struct sunos_direntry __user *dirent;
362 struct sunos_direntry_callback * buf =
363 (struct sunos_direntry_callback *) __buf;
364 int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1);
365
366 buf->error = -EINVAL; /* only used if we fail.. */
367 if (reclen > buf->count)
368 return -EINVAL;
369 dirent = buf->previous;
370 dirent = buf->curr;
371 buf->previous = dirent;
372 put_user(ino, &dirent->d_ino);
373 put_user(namlen, &dirent->d_namlen);
374 put_user(reclen, &dirent->d_reclen);
375 if (copy_to_user(dirent->d_name, name, namlen))
376 return -EFAULT;
377 put_user(0, dirent->d_name + namlen);
378 dirent = (void __user *) dirent + reclen;
379 buf->curr = dirent;
380 buf->count -= reclen;
381 return 0;
382 }
383
384 asmlinkage int sunos_getdirentries(unsigned int fd,
385 void __user *dirent,
386 int cnt,
387 unsigned int __user *basep)
388 {
389 struct file * file;
390 struct sunos_direntry __user *lastdirent;
391 int error = -EBADF;
392 struct sunos_direntry_callback buf;
393
394 if (fd >= SUNOS_NR_OPEN)
395 goto out;
396
397 file = fget(fd);
398 if (!file)
399 goto out;
400
401 error = -EINVAL;
402 if (cnt < (sizeof(struct sunos_direntry) + 255))
403 goto out_putf;
404
405 buf.curr = (struct sunos_direntry __user *) dirent;
406 buf.previous = NULL;
407 buf.count = cnt;
408 buf.error = 0;
409
410 error = vfs_readdir(file, sunos_filldirentry, &buf);
411 if (error < 0)
412 goto out_putf;
413
414 lastdirent = buf.previous;
415 error = buf.error;
416 if (lastdirent) {
417 put_user(file->f_pos, basep);
418 error = cnt - buf.count;
419 }
420
421 out_putf:
422 fput(file);
423 out:
424 return error;
425 }
426
427 struct sunos_utsname {
428 char sname[9];
429 char nname[9];
430 char nnext[56];
431 char rel[9];
432 char ver[9];
433 char mach[9];
434 };
435
436 asmlinkage int sunos_uname(struct sunos_utsname __user *name)
437 {
438 int ret;
439
440 down_read(&uts_sem);
441 ret = copy_to_user(&name->sname[0], &system_utsname.sysname[0],
442 sizeof(name->sname) - 1);
443 ret |= copy_to_user(&name->nname[0], &system_utsname.nodename[0],
444 sizeof(name->nname) - 1);
445 ret |= put_user('\0', &name->nname[8]);
446 ret |= copy_to_user(&name->rel[0], &system_utsname.release[0],
447 sizeof(name->rel) - 1);
448 ret |= copy_to_user(&name->ver[0], &system_utsname.version[0],
449 sizeof(name->ver) - 1);
450 ret |= copy_to_user(&name->mach[0], &system_utsname.machine[0],
451 sizeof(name->mach) - 1);
452 up_read(&uts_sem);
453 return (ret ? -EFAULT : 0);
454 }
455
456 asmlinkage int sunos_nosys(void)
457 {
458 struct pt_regs *regs;
459 siginfo_t info;
460 static int cnt;
461
462 regs = current_thread_info()->kregs;
463 if (test_thread_flag(TIF_32BIT)) {
464 regs->tpc &= 0xffffffff;
465 regs->tnpc &= 0xffffffff;
466 }
467 info.si_signo = SIGSYS;
468 info.si_errno = 0;
469 info.si_code = __SI_FAULT|0x100;
470 info.si_addr = (void __user *)regs->tpc;
471 info.si_trapno = regs->u_regs[UREG_G1];
472 send_sig_info(SIGSYS, &info, current);
473 if (cnt++ < 4) {
474 printk("Process makes ni_syscall number %d, register dump:\n",
475 (int) regs->u_regs[UREG_G1]);
476 show_regs(regs);
477 }
478 return -ENOSYS;
479 }
480
481 /* This is not a real and complete implementation yet, just to keep
482 * the easy SunOS binaries happy.
483 */
484 asmlinkage int sunos_fpathconf(int fd, int name)
485 {
486 int ret;
487
488 switch(name) {
489 case _PCONF_LINK:
490 ret = LINK_MAX;
491 break;
492 case _PCONF_CANON:
493 ret = MAX_CANON;
494 break;
495 case _PCONF_INPUT:
496 ret = MAX_INPUT;
497 break;
498 case _PCONF_NAME:
499 ret = NAME_MAX;
500 break;
501 case _PCONF_PATH:
502 ret = PATH_MAX;
503 break;
504 case _PCONF_PIPE:
505 ret = PIPE_BUF;
506 break;
507 case _PCONF_CHRESTRICT: /* XXX Investigate XXX */
508 ret = 1;
509 break;
510 case _PCONF_NOTRUNC: /* XXX Investigate XXX */
511 case _PCONF_VDISABLE:
512 ret = 0;
513 break;
514 default:
515 ret = -EINVAL;
516 break;
517 }
518 return ret;
519 }
520
521 asmlinkage int sunos_pathconf(u32 u_path, int name)
522 {
523 int ret;
524
525 ret = sunos_fpathconf(0, name); /* XXX cheese XXX */
526 return ret;
527 }
528
529 asmlinkage int sunos_select(int width, u32 inp, u32 outp, u32 exp, u32 tvp_x)
530 {
531 int ret;
532
533 /* SunOS binaries expect that select won't change the tvp contents */
534 ret = compat_sys_select(width, compat_ptr(inp), compat_ptr(outp),
535 compat_ptr(exp), compat_ptr(tvp_x));
536 if (ret == -EINTR && tvp_x) {
537 struct compat_timeval __user *tvp = compat_ptr(tvp_x);
538 time_t sec, usec;
539
540 __get_user(sec, &tvp->tv_sec);
541 __get_user(usec, &tvp->tv_usec);
542 if (sec == 0 && usec == 0)
543 ret = 0;
544 }
545 return ret;
546 }
547
548 asmlinkage void sunos_nop(void)
549 {
550 return;
551 }
552
553 #if 0 /* This code doesn't translate user pointers correctly,
554 * disable for now. -DaveM
555 */
556
557 /* XXXXXXXXXX SunOS mount/umount. XXXXXXXXXXX */
558 #define SMNT_RDONLY 1
559 #define SMNT_NOSUID 2
560 #define SMNT_NEWTYPE 4
561 #define SMNT_GRPID 8
562 #define SMNT_REMOUNT 16
563 #define SMNT_NOSUB 32
564 #define SMNT_MULTI 64
565 #define SMNT_SYS5 128
566
567 struct sunos_fh_t {
568 char fh_data [NFS_FHSIZE];
569 };
570
571 struct sunos_nfs_mount_args {
572 struct sockaddr_in *addr; /* file server address */
573 struct nfs_fh *fh; /* File handle to be mounted */
574 int flags; /* flags */
575 int wsize; /* write size in bytes */
576 int rsize; /* read size in bytes */
577 int timeo; /* initial timeout in .1 secs */
578 int retrans; /* times to retry send */
579 char *hostname; /* server's hostname */
580 int acregmin; /* attr cache file min secs */
581 int acregmax; /* attr cache file max secs */
582 int acdirmin; /* attr cache dir min secs */
583 int acdirmax; /* attr cache dir max secs */
584 char *netname; /* server's netname */
585 };
586
587
588 /* Bind the socket on a local reserved port and connect it to the
589 * remote server. This on Linux/i386 is done by the mount program,
590 * not by the kernel.
591 */
592 /* XXXXXXXXXXXXXXXXXXXX */
593 static int
594 sunos_nfs_get_server_fd (int fd, struct sockaddr_in *addr)
595 {
596 struct sockaddr_in local;
597 struct sockaddr_in server;
598 int try_port;
599 int ret;
600 struct socket *socket;
601 struct inode *inode;
602 struct file *file;
603
604 file = fget(fd);
605 if (!file)
606 return 0;
607
608 inode = file->f_dentry->d_inode;
609
610 socket = SOCKET_I(inode);
611 local.sin_family = AF_INET;
612 local.sin_addr.s_addr = INADDR_ANY;
613
614 /* IPPORT_RESERVED = 1024, can't find the definition in the kernel */
615 try_port = 1024;
616 do {
617 local.sin_port = htons (--try_port);
618 ret = socket->ops->bind(socket, (struct sockaddr*)&local,
619 sizeof(local));
620 } while (ret && try_port > (1024 / 2));
621
622 if (ret) {
623 fput(file);
624 return 0;
625 }
626
627 server.sin_family = AF_INET;
628 server.sin_addr = addr->sin_addr;
629 server.sin_port = NFS_PORT;
630
631 /* Call sys_connect */
632 ret = socket->ops->connect (socket, (struct sockaddr *) &server,
633 sizeof (server), file->f_flags);
634 fput(file);
635 if (ret < 0)
636 return 0;
637 return 1;
638 }
639
640 /* XXXXXXXXXXXXXXXXXXXX */
641 static int get_default (int value, int def_value)
642 {
643 if (value)
644 return value;
645 else
646 return def_value;
647 }
648
649 /* XXXXXXXXXXXXXXXXXXXX */
650 static int sunos_nfs_mount(char *dir_name, int linux_flags, void __user *data)
651 {
652 int server_fd, err;
653 char *the_name, *mount_page;
654 struct nfs_mount_data linux_nfs_mount;
655 struct sunos_nfs_mount_args sunos_mount;
656
657 /* Ok, here comes the fun part: Linux's nfs mount needs a
658 * socket connection to the server, but SunOS mount does not
659 * require this, so we use the information on the destination
660 * address to create a socket and bind it to a reserved
661 * port on this system
662 */
663 if (copy_from_user(&sunos_mount, data, sizeof(sunos_mount)))
664 return -EFAULT;
665
666 server_fd = sys_socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
667 if (server_fd < 0)
668 return -ENXIO;
669
670 if (copy_from_user(&linux_nfs_mount.addr, sunos_mount.addr,
671 sizeof(*sunos_mount.addr)) ||
672 copy_from_user(&linux_nfs_mount.root, sunos_mount.fh,
673 sizeof(*sunos_mount.fh))) {
674 sys_close (server_fd);
675 return -EFAULT;
676 }
677
678 if (!sunos_nfs_get_server_fd (server_fd, &linux_nfs_mount.addr)){
679 sys_close (server_fd);
680 return -ENXIO;
681 }
682
683 /* Now, bind it to a locally reserved port */
684 linux_nfs_mount.version = NFS_MOUNT_VERSION;
685 linux_nfs_mount.flags = sunos_mount.flags;
686 linux_nfs_mount.fd = server_fd;
687
688 linux_nfs_mount.rsize = get_default (sunos_mount.rsize, 8192);
689 linux_nfs_mount.wsize = get_default (sunos_mount.wsize, 8192);
690 linux_nfs_mount.timeo = get_default (sunos_mount.timeo, 10);
691 linux_nfs_mount.retrans = sunos_mount.retrans;
692
693 linux_nfs_mount.acregmin = sunos_mount.acregmin;
694 linux_nfs_mount.acregmax = sunos_mount.acregmax;
695 linux_nfs_mount.acdirmin = sunos_mount.acdirmin;
696 linux_nfs_mount.acdirmax = sunos_mount.acdirmax;
697
698 the_name = getname(sunos_mount.hostname);
699 if (IS_ERR(the_name))
700 return PTR_ERR(the_name);
701
702 strlcpy(linux_nfs_mount.hostname, the_name,
703 sizeof(linux_nfs_mount.hostname));
704 putname (the_name);
705
706 mount_page = (char *) get_zeroed_page(GFP_KERNEL);
707 if (!mount_page)
708 return -ENOMEM;
709
710 memcpy(mount_page, &linux_nfs_mount, sizeof(linux_nfs_mount));
711
712 err = do_mount("", dir_name, "nfs", linux_flags, mount_page);
713
714 free_page((unsigned long) mount_page);
715 return err;
716 }
717
718 /* XXXXXXXXXXXXXXXXXXXX */
719 asmlinkage int
720 sunos_mount(char *type, char *dir, int flags, void *data)
721 {
722 int linux_flags = 0;
723 int ret = -EINVAL;
724 char *dev_fname = 0;
725 char *dir_page, *type_page;
726
727 if (!capable (CAP_SYS_ADMIN))
728 return -EPERM;
729
730 /* We don't handle the integer fs type */
731 if ((flags & SMNT_NEWTYPE) == 0)
732 goto out;
733
734 /* Do not allow for those flags we don't support */
735 if (flags & (SMNT_GRPID|SMNT_NOSUB|SMNT_MULTI|SMNT_SYS5))
736 goto out;
737
738 if (flags & SMNT_REMOUNT)
739 linux_flags |= MS_REMOUNT;
740 if (flags & SMNT_RDONLY)
741 linux_flags |= MS_RDONLY;
742 if (flags & SMNT_NOSUID)
743 linux_flags |= MS_NOSUID;
744
745 dir_page = getname(dir);
746 ret = PTR_ERR(dir_page);
747 if (IS_ERR(dir_page))
748 goto out;
749
750 type_page = getname(type);
751 ret = PTR_ERR(type_page);
752 if (IS_ERR(type_page))
753 goto out1;
754
755 if (strcmp(type_page, "ext2") == 0) {
756 dev_fname = getname(data);
757 } else if (strcmp(type_page, "iso9660") == 0) {
758 dev_fname = getname(data);
759 } else if (strcmp(type_page, "minix") == 0) {
760 dev_fname = getname(data);
761 } else if (strcmp(type_page, "nfs") == 0) {
762 ret = sunos_nfs_mount (dir_page, flags, data);
763 goto out2;
764 } else if (strcmp(type_page, "ufs") == 0) {
765 printk("Warning: UFS filesystem mounts unsupported.\n");
766 ret = -ENODEV;
767 goto out2;
768 } else if (strcmp(type_page, "proc")) {
769 ret = -ENODEV;
770 goto out2;
771 }
772 ret = PTR_ERR(dev_fname);
773 if (IS_ERR(dev_fname))
774 goto out2;
775 lock_kernel();
776 ret = do_mount(dev_fname, dir_page, type_page, linux_flags, NULL);
777 unlock_kernel();
778 if (dev_fname)
779 putname(dev_fname);
780 out2:
781 putname(type_page);
782 out1:
783 putname(dir_page);
784 out:
785 return ret;
786 }
787 #endif
788
789 asmlinkage int sunos_setpgrp(pid_t pid, pid_t pgid)
790 {
791 int ret;
792
793 /* So stupid... */
794 if ((!pid || pid == current->pid) &&
795 !pgid) {
796 sys_setsid();
797 ret = 0;
798 } else {
799 ret = sys_setpgid(pid, pgid);
800 }
801 return ret;
802 }
803
804 /* So stupid... */
805 extern long compat_sys_wait4(compat_pid_t, compat_uint_t __user *, int,
806 struct compat_rusage __user *);
807
808 asmlinkage int sunos_wait4(compat_pid_t pid, compat_uint_t __user *stat_addr, int options, struct compat_rusage __user *ru)
809 {
810 int ret;
811
812 ret = compat_sys_wait4((pid ? pid : ((compat_pid_t)-1)),
813 stat_addr, options, ru);
814 return ret;
815 }
816
817 extern int kill_pg(int, int, int);
818 asmlinkage int sunos_killpg(int pgrp, int sig)
819 {
820 return kill_pg(pgrp, sig, 0);
821 }
822
823 asmlinkage int sunos_audit(void)
824 {
825 printk ("sys_audit\n");
826 return -1;
827 }
828
829 asmlinkage u32 sunos_gethostid(void)
830 {
831 u32 ret;
832
833 ret = (((u32)idprom->id_machtype << 24) | ((u32)idprom->id_sernum));
834
835 return ret;
836 }
837
838 /* sysconf options, for SunOS compatibility */
839 #define _SC_ARG_MAX 1
840 #define _SC_CHILD_MAX 2
841 #define _SC_CLK_TCK 3
842 #define _SC_NGROUPS_MAX 4
843 #define _SC_OPEN_MAX 5
844 #define _SC_JOB_CONTROL 6
845 #define _SC_SAVED_IDS 7
846 #define _SC_VERSION 8
847
848 asmlinkage s32 sunos_sysconf (int name)
849 {
850 s32 ret;
851
852 switch (name){
853 case _SC_ARG_MAX:
854 ret = ARG_MAX;
855 break;
856 case _SC_CHILD_MAX:
857 ret = CHILD_MAX;
858 break;
859 case _SC_CLK_TCK:
860 ret = HZ;
861 break;
862 case _SC_NGROUPS_MAX:
863 ret = NGROUPS_MAX;
864 break;
865 case _SC_OPEN_MAX:
866 ret = OPEN_MAX;
867 break;
868 case _SC_JOB_CONTROL:
869 ret = 1; /* yes, we do support job control */
870 break;
871 case _SC_SAVED_IDS:
872 ret = 1; /* yes, we do support saved uids */
873 break;
874 case _SC_VERSION:
875 /* mhm, POSIX_VERSION is in /usr/include/unistd.h
876 * should it go on /usr/include/linux?
877 */
878 ret = 199009;
879 break;
880 default:
881 ret = -1;
882 break;
883 };
884 return ret;
885 }
886
887 asmlinkage int sunos_semsys(int op, u32 arg1, u32 arg2, u32 arg3, void __user *ptr)
888 {
889 union semun arg4;
890 int ret;
891
892 switch (op) {
893 case 0:
894 /* Most arguments match on a 1:1 basis but cmd doesn't */
895 switch(arg3) {
896 case 4:
897 arg3=GETPID; break;
898 case 5:
899 arg3=GETVAL; break;
900 case 6:
901 arg3=GETALL; break;
902 case 3:
903 arg3=GETNCNT; break;
904 case 7:
905 arg3=GETZCNT; break;
906 case 8:
907 arg3=SETVAL; break;
908 case 9:
909 arg3=SETALL; break;
910 }
911 /* sys_semctl(): */
912 /* value to modify semaphore to */
913 arg4.__pad = ptr;
914 ret = sys_semctl((int)arg1, (int)arg2, (int)arg3, arg4);
915 break;
916 case 1:
917 /* sys_semget(): */
918 ret = sys_semget((key_t)arg1, (int)arg2, (int)arg3);
919 break;
920 case 2:
921 /* sys_semop(): */
922 ret = sys_semop((int)arg1, (struct sembuf __user *)(unsigned long)arg2,
923 (unsigned int) arg3);
924 break;
925 default:
926 ret = -EINVAL;
927 break;
928 };
929 return ret;
930 }
931
932 struct msgbuf32 {
933 s32 mtype;
934 char mtext[1];
935 };
936
937 struct ipc_perm32
938 {
939 key_t key;
940 compat_uid_t uid;
941 compat_gid_t gid;
942 compat_uid_t cuid;
943 compat_gid_t cgid;
944 compat_mode_t mode;
945 unsigned short seq;
946 };
947
948 struct msqid_ds32
949 {
950 struct ipc_perm32 msg_perm;
951 u32 msg_first;
952 u32 msg_last;
953 compat_time_t msg_stime;
954 compat_time_t msg_rtime;
955 compat_time_t msg_ctime;
956 u32 wwait;
957 u32 rwait;
958 unsigned short msg_cbytes;
959 unsigned short msg_qnum;
960 unsigned short msg_qbytes;
961 compat_ipc_pid_t msg_lspid;
962 compat_ipc_pid_t msg_lrpid;
963 };
964
965 static inline int sunos_msqid_get(struct msqid_ds32 __user *user,
966 struct msqid_ds *kern)
967 {
968 if (get_user(kern->msg_perm.key, &user->msg_perm.key) ||
969 __get_user(kern->msg_perm.uid, &user->msg_perm.uid) ||
970 __get_user(kern->msg_perm.gid, &user->msg_perm.gid) ||
971 __get_user(kern->msg_perm.cuid, &user->msg_perm.cuid) ||
972 __get_user(kern->msg_perm.cgid, &user->msg_perm.cgid) ||
973 __get_user(kern->msg_stime, &user->msg_stime) ||
974 __get_user(kern->msg_rtime, &user->msg_rtime) ||
975 __get_user(kern->msg_ctime, &user->msg_ctime) ||
976 __get_user(kern->msg_ctime, &user->msg_cbytes) ||
977 __get_user(kern->msg_ctime, &user->msg_qnum) ||
978 __get_user(kern->msg_ctime, &user->msg_qbytes) ||
979 __get_user(kern->msg_ctime, &user->msg_lspid) ||
980 __get_user(kern->msg_ctime, &user->msg_lrpid))
981 return -EFAULT;
982 return 0;
983 }
984
985 static inline int sunos_msqid_put(struct msqid_ds32 __user *user,
986 struct msqid_ds *kern)
987 {
988 if (put_user(kern->msg_perm.key, &user->msg_perm.key) ||
989 __put_user(kern->msg_perm.uid, &user->msg_perm.uid) ||
990 __put_user(kern->msg_perm.gid, &user->msg_perm.gid) ||
991 __put_user(kern->msg_perm.cuid, &user->msg_perm.cuid) ||
992 __put_user(kern->msg_perm.cgid, &user->msg_perm.cgid) ||
993 __put_user(kern->msg_stime, &user->msg_stime) ||
994 __put_user(kern->msg_rtime, &user->msg_rtime) ||
995 __put_user(kern->msg_ctime, &user->msg_ctime) ||
996 __put_user(kern->msg_ctime, &user->msg_cbytes) ||
997 __put_user(kern->msg_ctime, &user->msg_qnum) ||
998 __put_user(kern->msg_ctime, &user->msg_qbytes) ||
999 __put_user(kern->msg_ctime, &user->msg_lspid) ||
1000 __put_user(kern->msg_ctime, &user->msg_lrpid))
1001 return -EFAULT;
1002 return 0;
1003 }
1004
1005 static inline int sunos_msgbuf_get(struct msgbuf32 __user *user, struct msgbuf *kern, int len)
1006 {
1007 if (get_user(kern->mtype, &user->mtype) ||
1008 __copy_from_user(kern->mtext, &user->mtext, len))
1009 return -EFAULT;
1010 return 0;
1011 }
1012
1013 static inline int sunos_msgbuf_put(struct msgbuf32 __user *user, struct msgbuf *kern, int len)
1014 {
1015 if (put_user(kern->mtype, &user->mtype) ||
1016 __copy_to_user(user->mtext, kern->mtext, len))
1017 return -EFAULT;
1018 return 0;
1019 }
1020
1021 asmlinkage int sunos_msgsys(int op, u32 arg1, u32 arg2, u32 arg3, u32 arg4)
1022 {
1023 struct sparc_stackf32 __user *sp;
1024 struct msqid_ds kds;
1025 struct msgbuf *kmbuf;
1026 mm_segment_t old_fs = get_fs();
1027 u32 arg5;
1028 int rval;
1029
1030 switch(op) {
1031 case 0:
1032 rval = sys_msgget((key_t)arg1, (int)arg2);
1033 break;
1034 case 1:
1035 if (!sunos_msqid_get((struct msqid_ds32 __user *)(unsigned long)arg3, &kds)) {
1036 set_fs(KERNEL_DS);
1037 rval = sys_msgctl((int)arg1, (int)arg2,
1038 (struct msqid_ds __user *)(unsigned long)arg3);
1039 set_fs(old_fs);
1040 if (!rval)
1041 rval = sunos_msqid_put((struct msqid_ds32 __user *)(unsigned long)arg3,
1042 &kds);
1043 } else
1044 rval = -EFAULT;
1045 break;
1046 case 2:
1047 rval = -EFAULT;
1048 kmbuf = (struct msgbuf *)kmalloc(sizeof(struct msgbuf) + arg3,
1049 GFP_KERNEL);
1050 if (!kmbuf)
1051 break;
1052 sp = (struct sparc_stackf32 __user *)
1053 (current_thread_info()->kregs->u_regs[UREG_FP] & 0xffffffffUL);
1054 if (get_user(arg5, &sp->xxargs[0])) {
1055 rval = -EFAULT;
1056 kfree(kmbuf);
1057 break;
1058 }
1059 set_fs(KERNEL_DS);
1060 rval = sys_msgrcv((int)arg1, (struct msgbuf __user *) kmbuf,
1061 (size_t)arg3,
1062 (long)arg4, (int)arg5);
1063 set_fs(old_fs);
1064 if (!rval)
1065 rval = sunos_msgbuf_put((struct msgbuf32 __user *)(unsigned long)arg2,
1066 kmbuf, arg3);
1067 kfree(kmbuf);
1068 break;
1069 case 3:
1070 rval = -EFAULT;
1071 kmbuf = (struct msgbuf *)kmalloc(sizeof(struct msgbuf) + arg3,
1072 GFP_KERNEL);
1073 if (!kmbuf || sunos_msgbuf_get((struct msgbuf32 __user *)(unsigned long)arg2,
1074 kmbuf, arg3))
1075 break;
1076 set_fs(KERNEL_DS);
1077 rval = sys_msgsnd((int)arg1, (struct msgbuf __user *) kmbuf,
1078 (size_t)arg3, (int)arg4);
1079 set_fs(old_fs);
1080 kfree(kmbuf);
1081 break;
1082 default:
1083 rval = -EINVAL;
1084 break;
1085 }
1086 return rval;
1087 }
1088
1089 struct shmid_ds32 {
1090 struct ipc_perm32 shm_perm;
1091 int shm_segsz;
1092 compat_time_t shm_atime;
1093 compat_time_t shm_dtime;
1094 compat_time_t shm_ctime;
1095 compat_ipc_pid_t shm_cpid;
1096 compat_ipc_pid_t shm_lpid;
1097 unsigned short shm_nattch;
1098 };
1099
1100 static inline int sunos_shmid_get(struct shmid_ds32 __user *user,
1101 struct shmid_ds *kern)
1102 {
1103 if (get_user(kern->shm_perm.key, &user->shm_perm.key) ||
1104 __get_user(kern->shm_perm.uid, &user->shm_perm.uid) ||
1105 __get_user(kern->shm_perm.gid, &user->shm_perm.gid) ||
1106 __get_user(kern->shm_perm.cuid, &user->shm_perm.cuid) ||
1107 __get_user(kern->shm_perm.cgid, &user->shm_perm.cgid) ||
1108 __get_user(kern->shm_segsz, &user->shm_segsz) ||
1109 __get_user(kern->shm_atime, &user->shm_atime) ||
1110 __get_user(kern->shm_dtime, &user->shm_dtime) ||
1111 __get_user(kern->shm_ctime, &user->shm_ctime) ||
1112 __get_user(kern->shm_cpid, &user->shm_cpid) ||
1113 __get_user(kern->shm_lpid, &user->shm_lpid) ||
1114 __get_user(kern->shm_nattch, &user->shm_nattch))
1115 return -EFAULT;
1116 return 0;
1117 }
1118
1119 static inline int sunos_shmid_put(struct shmid_ds32 __user *user,
1120 struct shmid_ds *kern)
1121 {
1122 if (put_user(kern->shm_perm.key, &user->shm_perm.key) ||
1123 __put_user(kern->shm_perm.uid, &user->shm_perm.uid) ||
1124 __put_user(kern->shm_perm.gid, &user->shm_perm.gid) ||
1125 __put_user(kern->shm_perm.cuid, &user->shm_perm.cuid) ||
1126 __put_user(kern->shm_perm.cgid, &user->shm_perm.cgid) ||
1127 __put_user(kern->shm_segsz, &user->shm_segsz) ||
1128 __put_user(kern->shm_atime, &user->shm_atime) ||
1129 __put_user(kern->shm_dtime, &user->shm_dtime) ||
1130 __put_user(kern->shm_ctime, &user->shm_ctime) ||
1131 __put_user(kern->shm_cpid, &user->shm_cpid) ||
1132 __put_user(kern->shm_lpid, &user->shm_lpid) ||
1133 __put_user(kern->shm_nattch, &user->shm_nattch))
1134 return -EFAULT;
1135 return 0;
1136 }
1137
1138 asmlinkage int sunos_shmsys(int op, u32 arg1, u32 arg2, u32 arg3)
1139 {
1140 struct shmid_ds ksds;
1141 unsigned long raddr;
1142 mm_segment_t old_fs = get_fs();
1143 int rval;
1144
1145 switch(op) {
1146 case 0:
1147 /* do_shmat(): attach a shared memory area */
1148 rval = do_shmat((int)arg1,(char __user *)(unsigned long)arg2,(int)arg3,&raddr);
1149 if (!rval)
1150 rval = (int) raddr;
1151 break;
1152 case 1:
1153 /* sys_shmctl(): modify shared memory area attr. */
1154 if (!sunos_shmid_get((struct shmid_ds32 __user *)(unsigned long)arg3, &ksds)) {
1155 set_fs(KERNEL_DS);
1156 rval = sys_shmctl((int) arg1,(int) arg2,
1157 (struct shmid_ds __user *) &ksds);
1158 set_fs(old_fs);
1159 if (!rval)
1160 rval = sunos_shmid_put((struct shmid_ds32 __user *)(unsigned long)arg3,
1161 &ksds);
1162 } else
1163 rval = -EFAULT;
1164 break;
1165 case 2:
1166 /* sys_shmdt(): detach a shared memory area */
1167 rval = sys_shmdt((char __user *)(unsigned long)arg1);
1168 break;
1169 case 3:
1170 /* sys_shmget(): get a shared memory area */
1171 rval = sys_shmget((key_t)arg1,(int)arg2,(int)arg3);
1172 break;
1173 default:
1174 rval = -EINVAL;
1175 break;
1176 };
1177 return rval;
1178 }
1179
1180 extern asmlinkage long sparc32_open(const char __user * filename, int flags, int mode);
1181
1182 asmlinkage int sunos_open(u32 fname, int flags, int mode)
1183 {
1184 const char __user *filename = compat_ptr(fname);
1185
1186 return sparc32_open(filename, flags, mode);
1187 }
1188
1189 #define SUNOS_EWOULDBLOCK 35
1190
1191 /* see the sunos man page read(2v) for an explanation
1192 of this garbage. We use O_NDELAY to mark
1193 file descriptors that have been set non-blocking
1194 using 4.2BSD style calls. (tridge) */
1195
1196 static inline int check_nonblock(int ret, int fd)
1197 {
1198 if (ret == -EAGAIN) {
1199 struct file * file = fget(fd);
1200 if (file) {
1201 if (file->f_flags & O_NDELAY)
1202 ret = -SUNOS_EWOULDBLOCK;
1203 fput(file);
1204 }
1205 }
1206 return ret;
1207 }
1208
1209 asmlinkage int sunos_read(unsigned int fd, char __user *buf, u32 count)
1210 {
1211 int ret;
1212
1213 ret = check_nonblock(sys_read(fd, buf, count), fd);
1214 return ret;
1215 }
1216
1217 asmlinkage int sunos_readv(u32 fd, void __user *vector, s32 count)
1218 {
1219 int ret;
1220
1221 ret = check_nonblock(compat_sys_readv(fd, vector, count), fd);
1222 return ret;
1223 }
1224
1225 asmlinkage int sunos_write(unsigned int fd, char __user *buf, u32 count)
1226 {
1227 int ret;
1228
1229 ret = check_nonblock(sys_write(fd, buf, count), fd);
1230 return ret;
1231 }
1232
1233 asmlinkage int sunos_writev(u32 fd, void __user *vector, s32 count)
1234 {
1235 int ret;
1236
1237 ret = check_nonblock(compat_sys_writev(fd, vector, count), fd);
1238 return ret;
1239 }
1240
1241 asmlinkage int sunos_recv(u32 __fd, void __user *ubuf, int size, unsigned flags)
1242 {
1243 int ret, fd = (int) __fd;
1244
1245 ret = check_nonblock(sys_recv(fd, ubuf, size, flags), fd);
1246 return ret;
1247 }
1248
1249 asmlinkage int sunos_send(u32 __fd, void __user *buff, int len, unsigned flags)
1250 {
1251 int ret, fd = (int) __fd;
1252
1253 ret = check_nonblock(sys_send(fd, buff, len, flags), fd);
1254 return ret;
1255 }
1256
1257 asmlinkage int sunos_accept(u32 __fd, struct sockaddr __user *sa, int __user *addrlen)
1258 {
1259 int ret, fd = (int) __fd;
1260
1261 while (1) {
1262 ret = check_nonblock(sys_accept(fd, sa, addrlen), fd);
1263 if (ret != -ENETUNREACH && ret != -EHOSTUNREACH)
1264 break;
1265 }
1266 return ret;
1267 }
1268
1269 #define SUNOS_SV_INTERRUPT 2
1270
1271 asmlinkage int sunos_sigaction (int sig,
1272 struct old_sigaction32 __user *act,
1273 struct old_sigaction32 __user *oact)
1274 {
1275 struct k_sigaction new_ka, old_ka;
1276 int ret;
1277
1278 if (act) {
1279 compat_old_sigset_t mask;
1280 u32 u_handler;
1281
1282 if (get_user(u_handler, &act->sa_handler) ||
1283 __get_user(new_ka.sa.sa_flags, &act->sa_flags))
1284 return -EFAULT;
1285 new_ka.sa.sa_handler = compat_ptr(u_handler);
1286 __get_user(mask, &act->sa_mask);
1287 new_ka.sa.sa_restorer = NULL;
1288 new_ka.ka_restorer = NULL;
1289 siginitset(&new_ka.sa.sa_mask, mask);
1290 new_ka.sa.sa_flags ^= SUNOS_SV_INTERRUPT;
1291 }
1292
1293 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
1294
1295 if (!ret && oact) {
1296 old_ka.sa.sa_flags ^= SUNOS_SV_INTERRUPT;
1297 if (put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler) ||
1298 __put_user(old_ka.sa.sa_flags, &oact->sa_flags))
1299 return -EFAULT;
1300 __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
1301 }
1302
1303 return ret;
1304 }
1305
1306 asmlinkage int sunos_setsockopt(u32 __fd, u32 __level, u32 __optname,
1307 char __user *optval, u32 __optlen)
1308 {
1309 int fd = (int) __fd;
1310 int level = (int) __level;
1311 int optname = (int) __optname;
1312 int optlen = (int) __optlen;
1313 int tr_opt = optname;
1314 int ret;
1315
1316 if (level == SOL_IP) {
1317 /* Multicast socketopts (ttl, membership) */
1318 if (tr_opt >=2 && tr_opt <= 6)
1319 tr_opt += 30;
1320 }
1321 ret = sys_setsockopt(fd, level, tr_opt,
1322 optval, optlen);
1323 return ret;
1324 }
1325
1326 asmlinkage int sunos_getsockopt(u32 __fd, u32 __level, u32 __optname,
1327 char __user *optval, int __user *optlen)
1328 {
1329 int fd = (int) __fd;
1330 int level = (int) __level;
1331 int optname = (int) __optname;
1332 int tr_opt = optname;
1333 int ret;
1334
1335 if (level == SOL_IP) {
1336 /* Multicast socketopts (ttl, membership) */
1337 if (tr_opt >=2 && tr_opt <= 6)
1338 tr_opt += 30;
1339 }
1340 ret = compat_sys_getsockopt(fd, level, tr_opt,
1341 optval, optlen);
1342 return ret;
1343 }
linux-next