?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Original kernel 2.4.37.5
[tomato.git] / release / src / linux / linux / arch / sparc / kernel / sys_sunos.c
blob9522cb7684e8a238c1fe418e5e8ad76d74fc5e0f
1 /* $Id: sys_sunos.c,v 1.135 2001/08/13 14:40:10 davem Exp $
2 * sys_sunos.c: SunOS specific syscall compatibility support.
3 *
4 * Copyright (C) 1995 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
13 #include <linux/kernel.h>
14 #include <linux/sched.h>
15 #include <linux/types.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
37 #include <asm/uaccess.h>
38 #ifndef KERNEL_DS
39 #include <linux/segment.h>
40 #endif
41
42 #include <asm/page.h>
43 #include <asm/pgtable.h>
44 #include <asm/pconf.h>
45 #include <asm/idprom.h> /* for gethostid() */
46 #include <asm/unistd.h>
47 #include <asm/system.h>
48
49 /* For the nfs mount emulation */
50 #include <linux/socket.h>
51 #include <linux/in.h>
52 #include <linux/nfs.h>
53 #include <linux/nfs2.h>
54 #include <linux/nfs_mount.h>
55
56 /* for sunos_select */
57 #include <linux/time.h>
58 #include <linux/personality.h>
59
60 /* NR_OPEN is now larger and dynamic in recent kernels. */
61 #define SUNOS_NR_OPEN 256
62
63 /* We use the SunOS mmap() semantics. */
64 asmlinkage unsigned long sunos_mmap(unsigned long addr, unsigned long len,
65 unsigned long prot, unsigned long flags,
66 unsigned long fd, unsigned long off)
67 {
68 struct file * file = NULL;
69 unsigned long retval, ret_type;
70
71 if(flags & MAP_NORESERVE) {
72 static int cnt;
73 if (cnt++ < 10)
74 printk("%s: unimplemented SunOS MAP_NORESERVE mmap() flag\n",
75 current->comm);
76 flags &= ~MAP_NORESERVE;
77 }
78 retval = -EBADF;
79 if(!(flags & MAP_ANONYMOUS)) {
80 if (fd >= SUNOS_NR_OPEN)
81 goto out;
82 file = fget(fd);
83 if (!file)
84 goto out;
85 }
86
87 retval = -EINVAL;
88 /* If this is ld.so or a shared library doing an mmap
89 * of /dev/zero, transform it into an anonymous mapping.
90 * SunOS is so stupid some times... hmph!
91 */
92 if (file) {
93 if(MAJOR(file->f_dentry->d_inode->i_rdev) == MEM_MAJOR &&
94 MINOR(file->f_dentry->d_inode->i_rdev) == 5) {
95 flags |= MAP_ANONYMOUS;
96 fput(file);
97 file = 0;
98 }
99 }
100 ret_type = flags & _MAP_NEW;
101 flags &= ~_MAP_NEW;
102
103 if(!(flags & MAP_FIXED))
104 addr = 0;
105 else {
106 if (ARCH_SUN4C_SUN4 &&
107 (len > 0x20000000 ||
108 ((flags & MAP_FIXED) &&
109 addr < 0xe0000000 && addr + len > 0x20000000)))
110 goto out_putf;
111
112 /* See asm-sparc/uaccess.h */
113 if (len > TASK_SIZE - PAGE_SIZE ||
114 addr + len > TASK_SIZE - PAGE_SIZE)
115 goto out_putf;
116 }
117
118 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
119 down_write(&current->mm->mmap_sem);
120 retval = do_mmap(file, addr, len, prot, flags, off);
121 up_write(&current->mm->mmap_sem);
122 if(!ret_type)
123 retval = ((retval < PAGE_OFFSET) ? 0 : retval);
124
125 out_putf:
126 if (file)
127 fput(file);
128 out:
129 return retval;
130 }
131
132 /* lmbench calls this, just say "yeah, ok" */
133 asmlinkage int sunos_mctl(unsigned long addr, unsigned long len, int function, char *arg)
134 {
135 return 0;
136 }
137
138 /* SunOS is completely broken... it returns 0 on success, otherwise
139 * ENOMEM. For sys_sbrk() it wants the old brk value as a return
140 * on success and ENOMEM as before on failure.
141 */
142 asmlinkage int sunos_brk(unsigned long brk)
143 {
144 int freepages, retval = -ENOMEM;
145 unsigned long rlim;
146 unsigned long newbrk, oldbrk;
147
148 down_write(&current->mm->mmap_sem);
149 if(ARCH_SUN4C_SUN4) {
150 if(brk >= 0x20000000 && brk < 0xe0000000) {
151 goto out;
152 }
153 }
154
155 if (brk < current->mm->end_code)
156 goto out;
157
158 newbrk = PAGE_ALIGN(brk);
159 oldbrk = PAGE_ALIGN(current->mm->brk);
160 retval = 0;
161 if (oldbrk == newbrk) {
162 current->mm->brk = brk;
163 goto out;
164 }
165
166 /*
167 * Always allow shrinking brk
168 */
169 if (brk <= current->mm->brk) {
170 current->mm->brk = brk;
171 do_munmap(current->mm, newbrk, oldbrk-newbrk);
172 goto out;
173 }
174 /*
175 * Check against rlimit and stack..
176 */
177 retval = -ENOMEM;
178 rlim = current->rlim[RLIMIT_DATA].rlim_cur;
179 if (rlim >= RLIM_INFINITY)
180 rlim = ~0;
181 if (brk - current->mm->end_code > rlim)
182 goto out;
183
184 /*
185 * Check against existing mmap mappings.
186 */
187 if (find_vma_intersection(current->mm, oldbrk, newbrk+PAGE_SIZE))
188 goto out;
189
190 /*
191 * stupid algorithm to decide if we have enough memory: while
192 * simple, it hopefully works in most obvious cases.. Easy to
193 * fool it, but this should catch most mistakes.
194 */
195 freepages = atomic_read(&buffermem_pages) >> PAGE_SHIFT;
196 freepages += page_cache_size;
197 freepages >>= 1;
198 freepages += nr_free_pages();
199 freepages += nr_swap_pages;
200 freepages -= num_physpages >> 4;
201 freepages -= (newbrk-oldbrk) >> PAGE_SHIFT;
202 if (freepages < 0)
203 goto out;
204 /*
205 * Ok, we have probably got enough memory - let it rip.
206 */
207 current->mm->brk = brk;
208 do_brk(oldbrk, newbrk-oldbrk);
209 retval = 0;
210 out:
211 up_write(&current->mm->mmap_sem);
212 return retval;
213 }
214
215 asmlinkage unsigned long sunos_sbrk(int increment)
216 {
217 int error;
218 unsigned long oldbrk;
219
220 /* This should do it hopefully... */
221 lock_kernel();
222 oldbrk = current->mm->brk;
223 error = sunos_brk(((int) current->mm->brk) + increment);
224 if(!error)
225 error = oldbrk;
226 unlock_kernel();
227 return error;
228 }
229
230 /* XXX Completely undocumented, and completely magic...
231 * XXX I believe it is to increase the size of the stack by
232 * XXX argument 'increment' and return the new end of stack
233 * XXX area. Wheee...
234 */
235 asmlinkage unsigned long sunos_sstk(int increment)
236 {
237 lock_kernel();
238 printk("%s: Call to sunos_sstk(increment<%d>) is unsupported\n",
239 current->comm, increment);
240 unlock_kernel();
241 return -1;
242 }
243
244 /* Give hints to the kernel as to what paging strategy to use...
245 * Completely bogus, don't remind me.
246 */
247 #define VA_NORMAL 0 /* Normal vm usage expected */
248 #define VA_ABNORMAL 1 /* Abnormal/random vm usage probable */
249 #define VA_SEQUENTIAL 2 /* Accesses will be of a sequential nature */
250 #define VA_INVALIDATE 3 /* Page table entries should be flushed ??? */
251 static char *vstrings[] = {
252 "VA_NORMAL",
253 "VA_ABNORMAL",
254 "VA_SEQUENTIAL",
255 "VA_INVALIDATE",
256 };
257
258 asmlinkage void sunos_vadvise(unsigned long strategy)
259 {
260 /* I wanna see who uses this... */
261 lock_kernel();
262 printk("%s: Advises us to use %s paging strategy\n",
263 current->comm,
264 strategy <= 3 ? vstrings[strategy] : "BOGUS");
265 unlock_kernel();
266 }
267
268 /* This just wants the soft limit (ie. rlim_cur element) of the RLIMIT_NOFILE
269 * resource limit and is for backwards compatibility with older sunos
270 * revs.
271 */
272 asmlinkage long sunos_getdtablesize(void)
273 {
274 return SUNOS_NR_OPEN;
275 }
276
277 #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
278
279 asmlinkage unsigned long sunos_sigblock(unsigned long blk_mask)
280 {
281 unsigned long old;
282
283 spin_lock_irq(&current->sigmask_lock);
284 old = current->blocked.sig[0];
285 current->blocked.sig[0] |= (blk_mask & _BLOCKABLE);
286 recalc_sigpending(current);
287 spin_unlock_irq(&current->sigmask_lock);
288 return old;
289 }
290
291 asmlinkage unsigned long sunos_sigsetmask(unsigned long newmask)
292 {
293 unsigned long retval;
294
295 spin_lock_irq(&current->sigmask_lock);
296 retval = current->blocked.sig[0];
297 current->blocked.sig[0] = (newmask & _BLOCKABLE);
298 recalc_sigpending(current);
299 spin_unlock_irq(&current->sigmask_lock);
300 return retval;
301 }
302
303 /* SunOS getdents is very similar to the newer Linux (iBCS2 compliant) */
304 /* getdents system call, the format of the structure just has a different */
305 /* layout (d_off+d_ino instead of d_ino+d_off) */
306 struct sunos_dirent {
307 long d_off;
308 unsigned long d_ino;
309 unsigned short d_reclen;
310 unsigned short d_namlen;
311 char d_name[1];
312 };
313
314 struct sunos_dirent_callback {
315 struct sunos_dirent *curr;
316 struct sunos_dirent *previous;
317 int count;
318 int error;
319 };
320
321 #define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de)))
322 #define ROUND_UP(x) (((x)+sizeof(long)-1) & ~(sizeof(long)-1))
323
324 static int sunos_filldir(void * __buf, const char * name, int namlen,
325 loff_t offset, ino_t ino, unsigned int d_type)
326 {
327 struct sunos_dirent * dirent;
328 struct sunos_dirent_callback * buf = (struct sunos_dirent_callback *) __buf;
329 int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1);
330
331 buf->error = -EINVAL; /* only used if we fail.. */
332 if (reclen > buf->count)
333 return -EINVAL;
334 dirent = buf->previous;
335 if (dirent)
336 put_user(offset, &dirent->d_off);
337 dirent = buf->curr;
338 buf->previous = dirent;
339 put_user(ino, &dirent->d_ino);
340 put_user(namlen, &dirent->d_namlen);
341 put_user(reclen, &dirent->d_reclen);
342 copy_to_user(dirent->d_name, name, namlen);
343 put_user(0, dirent->d_name + namlen);
344 ((char *) dirent) += reclen;
345 buf->curr = dirent;
346 buf->count -= reclen;
347 return 0;
348 }
349
350 asmlinkage int sunos_getdents(unsigned int fd, void * dirent, int cnt)
351 {
352 struct file * file;
353 struct sunos_dirent * lastdirent;
354 struct sunos_dirent_callback buf;
355 int error = -EBADF;
356
357 if (fd >= SUNOS_NR_OPEN)
358 goto out;
359
360 file = fget(fd);
361 if (!file)
362 goto out;
363
364 error = -EINVAL;
365 if (cnt < (sizeof(struct sunos_dirent) + 255))
366 goto out_putf;
367
368 buf.curr = (struct sunos_dirent *) dirent;
369 buf.previous = NULL;
370 buf.count = cnt;
371 buf.error = 0;
372
373 error = vfs_readdir(file, sunos_filldir, &buf);
374 if (error < 0)
375 goto out_putf;
376
377 lastdirent = buf.previous;
378 error = buf.error;
379 if (lastdirent) {
380 put_user(file->f_pos, &lastdirent->d_off);
381 error = cnt - buf.count;
382 }
383
384 out_putf:
385 fput(file);
386 out:
387 return error;
388 }
389
390 /* Old sunos getdirentries, severely broken compatibility stuff here. */
391 struct sunos_direntry {
392 unsigned long d_ino;
393 unsigned short d_reclen;
394 unsigned short d_namlen;
395 char d_name[1];
396 };
397
398 struct sunos_direntry_callback {
399 struct sunos_direntry *curr;
400 struct sunos_direntry *previous;
401 int count;
402 int error;
403 };
404
405 static int sunos_filldirentry(void * __buf, const char * name, int namlen,
406 loff_t offset, ino_t ino, unsigned int d_type)
407 {
408 struct sunos_direntry * dirent;
409 struct sunos_direntry_callback * buf = (struct sunos_direntry_callback *) __buf;
410 int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1);
411
412 buf->error = -EINVAL; /* only used if we fail.. */
413 if (reclen > buf->count)
414 return -EINVAL;
415 dirent = buf->previous;
416 dirent = buf->curr;
417 buf->previous = dirent;
418 put_user(ino, &dirent->d_ino);
419 put_user(namlen, &dirent->d_namlen);
420 put_user(reclen, &dirent->d_reclen);
421 copy_to_user(dirent->d_name, name, namlen);
422 put_user(0, dirent->d_name + namlen);
423 ((char *) dirent) += reclen;
424 buf->curr = dirent;
425 buf->count -= reclen;
426 return 0;
427 }
428
429 asmlinkage int sunos_getdirentries(unsigned int fd, void * dirent, int cnt, unsigned int *basep)
430 {
431 struct file * file;
432 struct sunos_direntry * lastdirent;
433 struct sunos_direntry_callback buf;
434 int error = -EBADF;
435
436 if (fd >= SUNOS_NR_OPEN)
437 goto out;
438
439 file = fget(fd);
440 if (!file)
441 goto out;
442
443 error = -EINVAL;
444 if(cnt < (sizeof(struct sunos_direntry) + 255))
445 goto out_putf;
446
447 buf.curr = (struct sunos_direntry *) dirent;
448 buf.previous = NULL;
449 buf.count = cnt;
450 buf.error = 0;
451
452 error = vfs_readdir(file, sunos_filldirentry, &buf);
453 if (error < 0)
454 goto out_putf;
455
456 lastdirent = buf.previous;
457 error = buf.error;
458 if (lastdirent) {
459 put_user(file->f_pos, basep);
460 error = cnt - buf.count;
461 }
462
463 out_putf:
464 fput(file);
465 out:
466 return error;
467 }
468
469 struct sunos_utsname {
470 char sname[9];
471 char nname[9];
472 char nnext[56];
473 char rel[9];
474 char ver[9];
475 char mach[9];
476 };
477
478 asmlinkage int sunos_uname(struct sunos_utsname *name)
479 {
480 int ret;
481 down_read(&uts_sem);
482 ret = copy_to_user(&name->sname[0], &system_utsname.sysname[0], sizeof(name->sname) - 1);
483 if (!ret) {
484 ret |= __copy_to_user(&name->nname[0], &system_utsname.nodename[0], sizeof(name->nname) - 1);
485 ret |= __put_user('\0', &name->nname[8]);
486 ret |= __copy_to_user(&name->rel[0], &system_utsname.release[0], sizeof(name->rel) - 1);
487 ret |= __copy_to_user(&name->ver[0], &system_utsname.version[0], sizeof(name->ver) - 1);
488 ret |= __copy_to_user(&name->mach[0], &system_utsname.machine[0], sizeof(name->mach) - 1);
489 }
490 up_read(&uts_sem);
491
492 return (ret ? -EFAULT : 0);
493 }
494
495 asmlinkage int sunos_nosys(void)
496 {
497 struct pt_regs *regs;
498 siginfo_t info;
499 static int cnt;
500
501 lock_kernel();
502 regs = current->thread.kregs;
503 info.si_signo = SIGSYS;
504 info.si_errno = 0;
505 info.si_code = __SI_FAULT|0x100;
506 info.si_addr = (void *)regs->pc;
507 info.si_trapno = regs->u_regs[UREG_G1];
508 send_sig_info(SIGSYS, &info, current);
509 if (cnt++ < 4) {
510 printk("Process makes ni_syscall number %d, register dump:\n",
511 (int) regs->u_regs[UREG_G1]);
512 show_regs(regs);
513 }
514 unlock_kernel();
515 return -ENOSYS;
516 }
517
518 /* This is not a real and complete implementation yet, just to keep
519 * the easy SunOS binaries happy.
520 */
521 asmlinkage int sunos_fpathconf(int fd, int name)
522 {
523 int ret;
524
525 switch(name) {
526 case _PCONF_LINK:
527 ret = LINK_MAX;
528 break;
529 case _PCONF_CANON:
530 ret = MAX_CANON;
531 break;
532 case _PCONF_INPUT:
533 ret = MAX_INPUT;
534 break;
535 case _PCONF_NAME:
536 ret = NAME_MAX;
537 break;
538 case _PCONF_PATH:
539 ret = PATH_MAX;
540 break;
541 case _PCONF_PIPE:
542 ret = PIPE_BUF;
543 break;
544 case _PCONF_CHRESTRICT: /* XXX Investigate XXX */
545 ret = 1;
546 break;
547 case _PCONF_NOTRUNC: /* XXX Investigate XXX */
548 case _PCONF_VDISABLE:
549 ret = 0;
550 break;
551 default:
552 ret = -EINVAL;
553 break;
554 }
555 return ret;
556 }
557
558 asmlinkage int sunos_pathconf(char *path, int name)
559 {
560 int ret;
561
562 ret = sunos_fpathconf(0, name); /* XXX cheese XXX */
563 return ret;
564 }
565
566 /* SunOS mount system call emulation */
567 extern asmlinkage int
568 sys_select(int n, fd_set *inp, fd_set *outp, fd_set *exp, struct timeval *tvp);
569
570 asmlinkage int sunos_select(int width, fd_set *inp, fd_set *outp, fd_set *exp, struct timeval *tvp)
571 {
572 int ret;
573
574 /* SunOS binaries expect that select won't change the tvp contents */
575 ret = sys_select (width, inp, outp, exp, tvp);
576 if (ret == -EINTR && tvp) {
577 time_t sec, usec;
578
579 __get_user(sec, &tvp->tv_sec);
580 __get_user(usec, &tvp->tv_usec);
581
582 if (sec == 0 && usec == 0)
583 ret = 0;
584 }
585 return ret;
586 }
587
588 asmlinkage void sunos_nop(void)
589 {
590 return;
591 }
592
593 /* SunOS mount/umount. */
594 #define SMNT_RDONLY 1
595 #define SMNT_NOSUID 2
596 #define SMNT_NEWTYPE 4
597 #define SMNT_GRPID 8
598 #define SMNT_REMOUNT 16
599 #define SMNT_NOSUB 32
600 #define SMNT_MULTI 64
601 #define SMNT_SYS5 128
602
603 struct sunos_fh_t {
604 char fh_data [NFS_FHSIZE];
605 };
606
607 struct sunos_nfs_mount_args {
608 struct sockaddr_in *addr; /* file server address */
609 struct nfs_fh *fh; /* File handle to be mounted */
610 int flags; /* flags */
611 int wsize; /* write size in bytes */
612 int rsize; /* read size in bytes */
613 int timeo; /* initial timeout in .1 secs */
614 int retrans; /* times to retry send */
615 char *hostname; /* server's hostname */
616 int acregmin; /* attr cache file min secs */
617 int acregmax; /* attr cache file max secs */
618 int acdirmin; /* attr cache dir min secs */
619 int acdirmax; /* attr cache dir max secs */
620 char *netname; /* server's netname */
621 };
622
623
624 extern asmlinkage int sys_connect(int fd, struct sockaddr *uservaddr, int addrlen);
625 extern asmlinkage int sys_socket(int family, int type, int protocol);
626 extern asmlinkage int sys_bind(int fd, struct sockaddr *umyaddr, int addrlen);
627
628
629 /* Bind the socket on a local reserved port and connect it to the
630 * remote server. This on Linux/i386 is done by the mount program,
631 * not by the kernel.
632 */
633 static int
634 sunos_nfs_get_server_fd (int fd, struct sockaddr_in *addr)
635 {
636 struct sockaddr_in local;
637 struct sockaddr_in server;
638 int try_port;
639 struct socket *socket;
640 struct inode *inode;
641 struct file *file;
642 int ret, result = 0;
643
644 file = fget(fd);
645 if (!file)
646 goto out;
647
648 inode = file->f_dentry->d_inode;
649
650 socket = &inode->u.socket_i;
651 local.sin_family = AF_INET;
652 local.sin_addr.s_addr = INADDR_ANY;
653
654 /* IPPORT_RESERVED = 1024, can't find the definition in the kernel */
655 try_port = 1024;
656 do {
657 local.sin_port = htons (--try_port);
658 ret = socket->ops->bind(socket, (struct sockaddr*)&local,
659 sizeof(local));
660 } while (ret && try_port > (1024 / 2));
661
662 if (ret)
663 goto out_putf;
664
665 server.sin_family = AF_INET;
666 server.sin_addr = addr->sin_addr;
667 server.sin_port = NFS_PORT;
668
669 /* Call sys_connect */
670 ret = socket->ops->connect (socket, (struct sockaddr *) &server,
671 sizeof (server), file->f_flags);
672 if (ret >= 0)
673 result = 1;
674
675 out_putf:
676 fput(file);
677 out:
678 return result;
679 }
680
681 static int get_default (int value, int def_value)
682 {
683 if (value)
684 return value;
685 else
686 return def_value;
687 }
688
689 static int sunos_nfs_mount(char *dir_name, int linux_flags, void *data)
690 {
691 int server_fd, err;
692 char *the_name, *mount_page;
693 struct nfs_mount_data linux_nfs_mount;
694 struct sunos_nfs_mount_args sunos_mount;
695
696 /* Ok, here comes the fun part: Linux's nfs mount needs a
697 * socket connection to the server, but SunOS mount does not
698 * require this, so we use the information on the destination
699 * address to create a socket and bind it to a reserved
700 * port on this system
701 */
702 if (copy_from_user(&sunos_mount, data, sizeof(sunos_mount)))
703 return -EFAULT;
704
705 server_fd = sys_socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
706 if (server_fd < 0)
707 return -ENXIO;
708
709 if (copy_from_user(&linux_nfs_mount.addr,sunos_mount.addr,
710 sizeof(*sunos_mount.addr)) ||
711 copy_from_user(&linux_nfs_mount.root,sunos_mount.fh,
712 sizeof(*sunos_mount.fh))) {
713 sys_close (server_fd);
714 return -EFAULT;
715 }
716
717 if (!sunos_nfs_get_server_fd (server_fd, &linux_nfs_mount.addr)){
718 sys_close (server_fd);
719 return -ENXIO;
720 }
721
722 /* Now, bind it to a locally reserved port */
723 linux_nfs_mount.version = NFS_MOUNT_VERSION;
724 linux_nfs_mount.flags = sunos_mount.flags;
725 linux_nfs_mount.fd = server_fd;
726
727 linux_nfs_mount.rsize = get_default (sunos_mount.rsize, 8192);
728 linux_nfs_mount.wsize = get_default (sunos_mount.wsize, 8192);
729 linux_nfs_mount.timeo = get_default (sunos_mount.timeo, 10);
730 linux_nfs_mount.retrans = sunos_mount.retrans;
731
732 linux_nfs_mount.acregmin = sunos_mount.acregmin;
733 linux_nfs_mount.acregmax = sunos_mount.acregmax;
734 linux_nfs_mount.acdirmin = sunos_mount.acdirmin;
735 linux_nfs_mount.acdirmax = sunos_mount.acdirmax;
736
737 the_name = getname(sunos_mount.hostname);
738 if(IS_ERR(the_name))
739 return PTR_ERR(the_name);
740
741 strncpy (linux_nfs_mount.hostname, the_name, 254);
742 linux_nfs_mount.hostname [255] = 0;
743 putname (the_name);
744
745 mount_page = (char *) get_zeroed_page(GFP_KERNEL);
746 if (!mount_page)
747 return -ENOMEM;
748
749 memcpy(mount_page, &linux_nfs_mount, sizeof(linux_nfs_mount));
750
751 err = do_mount("", dir_name, "nfs", linux_flags, mount_page);
752
753 free_page((unsigned long) mount_page);
754 return err;
755 }
756
757 asmlinkage int
758 sunos_mount(char *type, char *dir, int flags, void *data)
759 {
760 int linux_flags = 0;
761 int ret = -EINVAL;
762 char *dev_fname = 0;
763 char *dir_page, *type_page;
764
765 if (!capable (CAP_SYS_ADMIN))
766 return -EPERM;
767
768 lock_kernel();
769 /* We don't handle the integer fs type */
770 if ((flags & SMNT_NEWTYPE) == 0)
771 goto out;
772
773 /* Do not allow for those flags we don't support */
774 if (flags & (SMNT_GRPID|SMNT_NOSUB|SMNT_MULTI|SMNT_SYS5))
775 goto out;
776
777 if(flags & SMNT_REMOUNT)
778 linux_flags |= MS_REMOUNT;
779 if(flags & SMNT_RDONLY)
780 linux_flags |= MS_RDONLY;
781 if(flags & SMNT_NOSUID)
782 linux_flags |= MS_NOSUID;
783
784 dir_page = getname(dir);
785 ret = PTR_ERR(dir_page);
786 if (IS_ERR(dir_page))
787 goto out;
788
789 type_page = getname(type);
790 ret = PTR_ERR(type_page);
791 if (IS_ERR(type_page))
792 goto out1;
793
794 if(strcmp(type_page, "ext2") == 0) {
795 dev_fname = getname(data);
796 } else if(strcmp(type_page, "iso9660") == 0) {
797 dev_fname = getname(data);
798 } else if(strcmp(type_page, "minix") == 0) {
799 dev_fname = getname(data);
800 } else if(strcmp(type_page, "nfs") == 0) {
801 ret = sunos_nfs_mount (dir_page, flags, data);
802 goto out2;
803 } else if(strcmp(type_page, "ufs") == 0) {
804 printk("Warning: UFS filesystem mounts unsupported.\n");
805 ret = -ENODEV;
806 goto out2;
807 } else if(strcmp(type_page, "proc")) {
808 ret = -ENODEV;
809 goto out2;
810 }
811 ret = PTR_ERR(dev_fname);
812 if (IS_ERR(dev_fname))
813 goto out2;
814 ret = do_mount(dev_fname, dir_page, type_page, linux_flags, NULL);
815 if (dev_fname)
816 putname(dev_fname);
817 out2:
818 putname(type_page);
819 out1:
820 putname(dir_page);
821 out:
822 unlock_kernel();
823 return ret;
824 }
825
826 extern asmlinkage int sys_setsid(void);
827 extern asmlinkage int sys_setpgid(pid_t, pid_t);
828
829 asmlinkage int sunos_setpgrp(pid_t pid, pid_t pgid)
830 {
831 int ret;
832
833 /* So stupid... */
834 if((!pid || pid == current->pid) &&
835 !pgid) {
836 sys_setsid();
837 ret = 0;
838 } else {
839 ret = sys_setpgid(pid, pgid);
840 }
841 return ret;
842 }
843
844 /* So stupid... */
845 asmlinkage int sunos_wait4(pid_t pid, unsigned int *stat_addr, int options, struct rusage *ru)
846 {
847 int ret;
848
849 ret = sys_wait4((pid ? pid : -1), stat_addr, options, ru);
850 return ret;
851 }
852
853 extern int kill_pg(int, int, int);
854 asmlinkage int sunos_killpg(int pgrp, int sig)
855 {
856 int ret;
857
858 lock_kernel();
859 ret = kill_pg(pgrp, sig, 0);
860 unlock_kernel();
861 return ret;
862 }
863
864 asmlinkage int sunos_audit(void)
865 {
866 lock_kernel();
867 printk ("sys_audit\n");
868 unlock_kernel();
869 return -1;
870 }
871
872 extern asmlinkage unsigned long sunos_gethostid(void)
873 {
874 unsigned long ret;
875
876 lock_kernel();
877 ret = ((unsigned long)idprom->id_machtype << 24) |
878 (unsigned long)idprom->id_sernum;
879 unlock_kernel();
880 return ret;
881 }
882
883 /* sysconf options, for SunOS compatibility */
884 #define _SC_ARG_MAX 1
885 #define _SC_CHILD_MAX 2
886 #define _SC_CLK_TCK 3
887 #define _SC_NGROUPS_MAX 4
888 #define _SC_OPEN_MAX 5
889 #define _SC_JOB_CONTROL 6
890 #define _SC_SAVED_IDS 7
891 #define _SC_VERSION 8
892
893 extern asmlinkage long sunos_sysconf (int name)
894 {
895 long ret;
896
897 switch (name){
898 case _SC_ARG_MAX:
899 ret = ARG_MAX;
900 break;
901 case _SC_CHILD_MAX:
902 ret = CHILD_MAX;
903 break;
904 case _SC_CLK_TCK:
905 ret = HZ;
906 break;
907 case _SC_NGROUPS_MAX:
908 ret = NGROUPS_MAX;
909 break;
910 case _SC_OPEN_MAX:
911 ret = OPEN_MAX;
912 break;
913 case _SC_JOB_CONTROL:
914 ret = 1; /* yes, we do support job control */
915 break;
916 case _SC_SAVED_IDS:
917 ret = 1; /* yes, we do support saved uids */
918 break;
919 case _SC_VERSION:
920 /* mhm, POSIX_VERSION is in /usr/include/unistd.h
921 * should it go on /usr/include/linux?
922 */
923 ret = 199009L;
924 break;
925 default:
926 ret = -1;
927 break;
928 };
929 return ret;
930 }
931
932 asmlinkage int sunos_semsys(int op, unsigned long arg1, unsigned long arg2,
933 unsigned long arg3, void *ptr)
934 {
935 union semun arg4;
936 int ret;
937
938 switch (op) {
939 case 0:
940 /* Most arguments match on a 1:1 basis but cmd doesn't */
941 switch(arg3) {
942 case 4:
943 arg3=GETPID; break;
944 case 5:
945 arg3=GETVAL; break;
946 case 6:
947 arg3=GETALL; break;
948 case 3:
949 arg3=GETNCNT; break;
950 case 7:
951 arg3=GETZCNT; break;
952 case 8:
953 arg3=SETVAL; break;
954 case 9:
955 arg3=SETALL; break;
956 }
957 /* sys_semctl(): */
958 arg4.__pad=ptr; /* value to modify semaphore to */
959 ret = sys_semctl((int)arg1, (int)arg2, (int)arg3, arg4 );
960 break;
961 case 1:
962 /* sys_semget(): */
963 ret = sys_semget((key_t)arg1, (int)arg2, (int)arg3);
964 break;
965 case 2:
966 /* sys_semop(): */
967 ret = sys_semop((int)arg1, (struct sembuf *)arg2, (unsigned)arg3);
968 break;
969 default:
970 ret = -EINVAL;
971 break;
972 };
973 return ret;
974 }
975
976 asmlinkage int sunos_msgsys(int op, unsigned long arg1, unsigned long arg2,
977 unsigned long arg3, unsigned long arg4)
978 {
979 struct sparc_stackf *sp;
980 unsigned long arg5;
981 int rval;
982
983 switch(op) {
984 case 0:
985 rval = sys_msgget((key_t)arg1, (int)arg2);
986 break;
987 case 1:
988 rval = sys_msgctl((int)arg1, (int)arg2,
989 (struct msqid_ds *)arg3);
990 break;
991 case 2:
992 lock_kernel();
993 sp = (struct sparc_stackf *)current->thread.kregs->u_regs[UREG_FP];
994 arg5 = sp->xxargs[0];
995 unlock_kernel();
996 rval = sys_msgrcv((int)arg1, (struct msgbuf *)arg2,
997 (size_t)arg3, (long)arg4, (int)arg5);
998 break;
999 case 3:
1000 rval = sys_msgsnd((int)arg1, (struct msgbuf *)arg2,
1001 (size_t)arg3, (int)arg4);
1002 break;
1003 default:
1004 rval = -EINVAL;
1005 break;
1006 }
1007 return rval;
1008 }
1009
1010 asmlinkage int sunos_shmsys(int op, unsigned long arg1, unsigned long arg2,
1011 unsigned long arg3)
1012 {
1013 unsigned long raddr;
1014 int rval;
1015
1016 switch(op) {
1017 case 0:
1018 /* sys_shmat(): attach a shared memory area */
1019 rval = sys_shmat((int)arg1,(char *)arg2,(int)arg3,&raddr);
1020 if(!rval)
1021 rval = (int) raddr;
1022 break;
1023 case 1:
1024 /* sys_shmctl(): modify shared memory area attr. */
1025 rval = sys_shmctl((int)arg1,(int)arg2,(struct shmid_ds *)arg3);
1026 break;
1027 case 2:
1028 /* sys_shmdt(): detach a shared memory area */
1029 rval = sys_shmdt((char *)arg1);
1030 break;
1031 case 3:
1032 /* sys_shmget(): get a shared memory area */
1033 rval = sys_shmget((key_t)arg1,(int)arg2,(int)arg3);
1034 break;
1035 default:
1036 rval = -EINVAL;
1037 break;
1038 };
1039 return rval;
1040 }
1041
1042 #define SUNOS_EWOULDBLOCK 35
1043
1044 /* see the sunos man page read(2v) for an explanation
1045 of this garbage. We use O_NDELAY to mark
1046 file descriptors that have been set non-blocking
1047 using 4.2BSD style calls. (tridge) */
1048
1049 static inline int check_nonblock(int ret, int fd)
1050 {
1051 if (ret == -EAGAIN) {
1052 struct file * file = fget(fd);
1053 if (file) {
1054 if (file->f_flags & O_NDELAY)
1055 ret = -SUNOS_EWOULDBLOCK;
1056 fput(file);
1057 }
1058 }
1059 return ret;
1060 }
1061
1062 extern asmlinkage ssize_t sys_read(unsigned int fd,char *buf,int count);
1063 extern asmlinkage ssize_t sys_write(unsigned int fd,char *buf,int count);
1064 extern asmlinkage int sys_recv(int fd, void * ubuf, int size, unsigned flags);
1065 extern asmlinkage int sys_send(int fd, void * buff, int len, unsigned flags);
1066 extern asmlinkage int sys_accept(int fd, struct sockaddr *sa, int *addrlen);
1067 extern asmlinkage int sys_readv(unsigned long fd, const struct iovec * vector, long count);
1068 extern asmlinkage int sys_writev(unsigned long fd, const struct iovec * vector, long count);
1069
1070
1071 asmlinkage int sunos_read(unsigned int fd,char *buf,int count)
1072 {
1073 int ret;
1074
1075 ret = check_nonblock(sys_read(fd,buf,count),fd);
1076 return ret;
1077 }
1078
1079 asmlinkage int sunos_readv(unsigned long fd, const struct iovec * vector, long count)
1080 {
1081 int ret;
1082
1083 ret = check_nonblock(sys_readv(fd,vector,count),fd);
1084 return ret;
1085 }
1086
1087 asmlinkage int sunos_write(unsigned int fd,char *buf,int count)
1088 {
1089 int ret;
1090
1091 ret = check_nonblock(sys_write(fd,buf,count),fd);
1092 return ret;
1093 }
1094
1095 asmlinkage int sunos_writev(unsigned long fd, const struct iovec * vector, long count)
1096 {
1097 int ret;
1098
1099 ret = check_nonblock(sys_writev(fd,vector,count),fd);
1100 return ret;
1101 }
1102
1103 asmlinkage int sunos_recv(int fd, void * ubuf, int size, unsigned flags)
1104 {
1105 int ret;
1106
1107 ret = check_nonblock(sys_recv(fd,ubuf,size,flags),fd);
1108 return ret;
1109 }
1110
1111 asmlinkage int sunos_send(int fd, void * buff, int len, unsigned flags)
1112 {
1113 int ret;
1114
1115 ret = check_nonblock(sys_send(fd,buff,len,flags),fd);
1116 return ret;
1117 }
1118
1119 extern asmlinkage int sys_setsockopt(int fd, int level, int optname,
1120 char *optval, int optlen);
1121
1122 asmlinkage int sunos_socket(int family, int type, int protocol)
1123 {
1124 int ret, one = 1;
1125
1126 ret = sys_socket(family, type, protocol);
1127 if (ret < 0)
1128 goto out;
1129
1130 sys_setsockopt(ret, SOL_SOCKET, SO_BSDCOMPAT,
1131 (char *)&one, sizeof(one));
1132 out:
1133 return ret;
1134 }
1135
1136 asmlinkage int sunos_accept(int fd, struct sockaddr *sa, int *addrlen)
1137 {
1138 int ret, one = 1;
1139
1140 while (1) {
1141 ret = check_nonblock(sys_accept(fd,sa,addrlen),fd);
1142 if (ret != -ENETUNREACH && ret != -EHOSTUNREACH)
1143 break;
1144 }
1145 if (ret < 0)
1146 goto out;
1147
1148 sys_setsockopt(ret, SOL_SOCKET, SO_BSDCOMPAT,
1149 (char *)&one, sizeof(one));
1150 out:
1151 return ret;
1152 }
1153
1154 #define SUNOS_SV_INTERRUPT 2
1155
1156 asmlinkage int
1157 sunos_sigaction(int sig, const struct old_sigaction *act,
1158 struct old_sigaction *oact)
1159 {
1160 struct k_sigaction new_ka, old_ka;
1161 int ret;
1162
1163 if(act) {
1164 old_sigset_t mask;
1165
1166 if (verify_area(VERIFY_READ, act, sizeof(*act)) ||
1167 __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
1168 __get_user(new_ka.sa.sa_flags, &act->sa_flags))
1169 return -EFAULT;
1170 __get_user(mask, &act->sa_mask);
1171 new_ka.sa.sa_restorer = NULL;
1172 new_ka.ka_restorer = NULL;
1173 siginitset(&new_ka.sa.sa_mask, mask);
1174 new_ka.sa.sa_flags ^= SUNOS_SV_INTERRUPT;
1175 }
1176
1177 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
1178
1179 if (!ret && oact) {
1180 /* In the clone() case we could copy half consistant
1181 * state to the user, however this could sleep and
1182 * deadlock us if we held the signal lock on SMP. So for
1183 * now I take the easy way out and do no locking.
1184 * But then again we don't support SunOS lwp's anyways ;-)
1185 */
1186 old_ka.sa.sa_flags ^= SUNOS_SV_INTERRUPT;
1187 if (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) ||
1188 __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
1189 __put_user(old_ka.sa.sa_flags, &oact->sa_flags))
1190 return -EFAULT;
1191 __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
1192 }
1193
1194 return ret;
1195 }
1196
1197
1198 extern asmlinkage int sys_setsockopt(int fd, int level, int optname, char *optval, int optlen);
1199 extern asmlinkage int sys_getsockopt(int fd, int level, int optname, char *optval, int *optlen);
1200
1201 asmlinkage int sunos_setsockopt(int fd, int level, int optname, char *optval,
1202 int optlen)
1203 {
1204 int tr_opt = optname;
1205 int ret;
1206
1207 if (level == SOL_IP) {
1208 /* Multicast socketopts (ttl, membership) */
1209 if (tr_opt >=2 && tr_opt <= 6)
1210 tr_opt += 30;
1211 }
1212 ret = sys_setsockopt(fd, level, tr_opt, optval, optlen);
1213 return ret;
1214 }
1215
1216 asmlinkage int sunos_getsockopt(int fd, int level, int optname, char *optval,
1217 int *optlen)
1218 {
1219 int tr_opt = optname;
1220 int ret;
1221
1222 if (level == SOL_IP) {
1223 /* Multicast socketopts (ttl, membership) */
1224 if (tr_opt >=2 && tr_opt <= 6)
1225 tr_opt += 30;
1226 }
1227 ret = sys_getsockopt(fd, level, tr_opt, optval, optlen);
1228 return ret;
1229 }
Tomato firmware and modifications.