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Add prototype for sigset_from_compat()
[linux-2.6-block.git] / arch / sparc64 / kernel / sys_sunos32.c
CommitLineData
1da177e4
LT		 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>
a9415644 15#include <linux/capability.h>
1da177e4
LT		 16#include <linux/compat.h>
17#include <linux/mman.h>
18#include <linux/mm.h>
19#include <linux/swap.h>
20#include <linux/fs.h>
21#include <linux/file.h>
22#include <linux/resource.h>
23#include <linux/ipc.h>
24#include <linux/shm.h>
25#include <linux/msg.h>
26#include <linux/sem.h>
27#include <linux/signal.h>
28#include <linux/uio.h>
29#include <linux/utsname.h>
30#include <linux/major.h>
31#include <linux/stat.h>
32#include <linux/slab.h>
33#include <linux/pagemap.h>
34#include <linux/errno.h>
35#include <linux/smp.h>
36#include <linux/smp_lock.h>
37#include <linux/syscalls.h>
38
39#include <asm/uaccess.h>
40#include <asm/page.h>
41#include <asm/pgtable.h>
42#include <asm/pconf.h>
43#include <asm/idprom.h> /* for gethostid() */
44#include <asm/unistd.h>
45#include <asm/system.h>
46
47/* For the nfs mount emulation */
48#include <linux/socket.h>
49#include <linux/in.h>
50#include <linux/nfs.h>
51#include <linux/nfs2.h>
52#include <linux/nfs_mount.h>
53
54/* for sunos_select */
55#include <linux/time.h>
56#include <linux/personality.h>
57
58/* For SOCKET_I */
59#include <linux/socket.h>
60#include <net/sock.h>
61#include <net/compat.h>
62
63#define SUNOS_NR_OPEN 256
64
65asmlinkage u32 sunos_mmap(u32 addr, u32 len, u32 prot, u32 flags, u32 fd, u32 off)
66{
67 struct file *file = NULL;
68 unsigned long retval, ret_type;
69
70 if (flags & MAP_NORESERVE) {
71 static int cnt;
72 if (cnt++ < 10)
73 printk("%s: unimplemented SunOS MAP_NORESERVE mmap() flag\n",
74 current->comm);
75 flags &= ~MAP_NORESERVE;
76 }
77 retval = -EBADF;
78 if (!(flags & MAP_ANONYMOUS)) {
79 struct inode * inode;
80 if (fd >= SUNOS_NR_OPEN)
81 goto out;
82 file = fget(fd);
83 if (!file)
84 goto out;
85 inode = file->f_dentry->d_inode;
86 if (imajor(inode) == MEM_MAJOR && iminor(inode) == 5) {
87 flags |= MAP_ANONYMOUS;
88 fput(file);
89 file = NULL;
90 }
91 }
92
93 retval = -EINVAL;
94 if (!(flags & MAP_FIXED))
95 addr = 0;
96 else if (len > 0xf0000000 || addr > 0xf0000000 - len)
97 goto out_putf;
98 ret_type = flags & _MAP_NEW;
99 flags &= ~_MAP_NEW;
100
101 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
102 down_write(&current->mm->mmap_sem);
103 retval = do_mmap(file,
104 (unsigned long) addr, (unsigned long) len,
105 (unsigned long) prot, (unsigned long) flags,
106 (unsigned long) off);
107 up_write(&current->mm->mmap_sem);
108 if (!ret_type)
109 retval = ((retval < 0xf0000000) ? 0 : retval);
110out_putf:
111 if (file)
112 fput(file);
113out:
114 return (u32) retval;
115}
116
117asmlinkage int sunos_mctl(u32 addr, u32 len, int function, u32 arg)
118{
119 return 0;
120}
121
122asmlinkage int sunos_brk(u32 baddr)
123{
124 int freepages, retval = -ENOMEM;
125 unsigned long rlim;
126 unsigned long newbrk, oldbrk, brk = (unsigned long) baddr;
127
128 down_write(&current->mm->mmap_sem);
129 if (brk < current->mm->end_code)
130 goto out;
131 newbrk = PAGE_ALIGN(brk);
132 oldbrk = PAGE_ALIGN(current->mm->brk);
133 retval = 0;
134 if (oldbrk == newbrk) {
135 current->mm->brk = brk;
136 goto out;
137 }
138 /* Always allow shrinking brk. */
139 if (brk <= current->mm->brk) {
140 current->mm->brk = brk;
141 do_munmap(current->mm, newbrk, oldbrk-newbrk);
142 goto out;
143 }
144 /* Check against rlimit and stack.. */
145 retval = -ENOMEM;
146 rlim = current->signal->rlim[RLIMIT_DATA].rlim_cur;
147 if (rlim >= RLIM_INFINITY)
148 rlim = ~0;
149 if (brk - current->mm->end_code > rlim)
150 goto out;
151 /* Check against existing mmap mappings. */
152 if (find_vma_intersection(current->mm, oldbrk, newbrk+PAGE_SIZE))
153 goto out;
154 /* stupid algorithm to decide if we have enough memory: while
155 * simple, it hopefully works in most obvious cases.. Easy to
156 * fool it, but this should catch most mistakes.
157 */
347ce434 158 freepages = global_page_state(NR_FILE_PAGES);
1da177e4
LT		 159 freepages >>= 1;
160 freepages += nr_free_pages();
161 freepages += nr_swap_pages;
162 freepages -= num_physpages >> 4;
163 freepages -= (newbrk-oldbrk) >> PAGE_SHIFT;
164 if (freepages < 0)
165 goto out;
166 /* Ok, we have probably got enough memory - let it rip. */
167 current->mm->brk = brk;
168 do_brk(oldbrk, newbrk-oldbrk);
169 retval = 0;
170out:
171 up_write(&current->mm->mmap_sem);
172 return retval;
173}
174
175asmlinkage u32 sunos_sbrk(int increment)
176{
177 int error, oldbrk;
178
179 /* This should do it hopefully... */
180 oldbrk = (int)current->mm->brk;
181 error = sunos_brk(((int) current->mm->brk) + increment);
182 if (!error)
183 error = oldbrk;
184 return error;
185}
186
187asmlinkage u32 sunos_sstk(int increment)
188{
189 printk("%s: Call to sunos_sstk(increment<%d>) is unsupported\n",
190 current->comm, increment);
191
192 return (u32)-1;
193}
194
195/* Give hints to the kernel as to what paging strategy to use...
196 * Completely bogus, don't remind me.
197 */
198#define VA_NORMAL 0 /* Normal vm usage expected */
199#define VA_ABNORMAL 1 /* Abnormal/random vm usage probable */
200#define VA_SEQUENTIAL 2 /* Accesses will be of a sequential nature */
201#define VA_INVALIDATE 3 /* Page table entries should be flushed ??? */
202static char *vstrings[] = {
203 "VA_NORMAL",
204 "VA_ABNORMAL",
205 "VA_SEQUENTIAL",
206 "VA_INVALIDATE",
207};
208
209asmlinkage void sunos_vadvise(u32 strategy)
210{
211 static int count;
212
213 /* I wanna see who uses this... */
214 if (count++ < 5)
215 printk("%s: Advises us to use %s paging strategy\n",
216 current->comm,
217 strategy <= 3 ? vstrings[strategy] : "BOGUS");
218}
219
220/* This just wants the soft limit (ie. rlim_cur element) of the RLIMIT_NOFILE
221 * resource limit and is for backwards compatibility with older sunos
222 * revs.
223 */
224asmlinkage int sunos_getdtablesize(void)
225{
226 return SUNOS_NR_OPEN;
227}
228
229
230#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
231
232asmlinkage u32 sunos_sigblock(u32 blk_mask)
233{
234 u32 old;
235
236 spin_lock_irq(&current->sighand->siglock);
237 old = (u32) current->blocked.sig[0];
238 current->blocked.sig[0] |= (blk_mask & _BLOCKABLE);
239 recalc_sigpending();
240 spin_unlock_irq(&current->sighand->siglock);
241 return old;
242}
243
244asmlinkage u32 sunos_sigsetmask(u32 newmask)
245{
246 u32 retval;
247
248 spin_lock_irq(&current->sighand->siglock);
249 retval = (u32) current->blocked.sig[0];
250 current->blocked.sig[0] = (newmask & _BLOCKABLE);
251 recalc_sigpending();
252 spin_unlock_irq(&current->sighand->siglock);
253 return retval;
254}
255
256/* SunOS getdents is very similar to the newer Linux (iBCS2 compliant) */
257/* getdents system call, the format of the structure just has a different */
258/* layout (d_off+d_ino instead of d_ino+d_off) */
259struct sunos_dirent {
260 s32 d_off;
261 u32 d_ino;
262 u16 d_reclen;
263 u16 d_namlen;
264 char d_name[1];
265};
266
267struct sunos_dirent_callback {
268 struct sunos_dirent __user *curr;
269 struct sunos_dirent __user *previous;
270 int count;
271 int error;
272};
273
274#define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de)))
275#define ROUND_UP(x) (((x)+sizeof(s32)-1) & ~(sizeof(s32)-1))
276
277static int sunos_filldir(void * __buf, const char * name, int namlen,
278 loff_t offset, ino_t ino, unsigned int d_type)
279{
280 struct sunos_dirent __user *dirent;
281 struct sunos_dirent_callback * buf = (struct sunos_dirent_callback *) __buf;
282 int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1);
283
284 buf->error = -EINVAL; /* only used if we fail.. */
285 if (reclen > buf->count)
286 return -EINVAL;
287 dirent = buf->previous;
288 if (dirent)
289 put_user(offset, &dirent->d_off);
290 dirent = buf->curr;
291 buf->previous = dirent;
292 put_user(ino, &dirent->d_ino);
293 put_user(namlen, &dirent->d_namlen);
294 put_user(reclen, &dirent->d_reclen);
295 if (copy_to_user(dirent->d_name, name, namlen))
296 return -EFAULT;
297 put_user(0, dirent->d_name + namlen);
298 dirent = (void __user *) dirent + reclen;
299 buf->curr = dirent;
300 buf->count -= reclen;
301 return 0;
302}
303
304asmlinkage int sunos_getdents(unsigned int fd, void __user *dirent, int cnt)
305{
306 struct file * file;
307 struct sunos_dirent __user *lastdirent;
308 struct sunos_dirent_callback buf;
309 int error = -EBADF;
310
311 if (fd >= SUNOS_NR_OPEN)
312 goto out;
313
314 file = fget(fd);
315 if (!file)
316 goto out;
317
318 error = -EINVAL;
319 if (cnt < (sizeof(struct sunos_dirent) + 255))
320 goto out_putf;
321
322 buf.curr = (struct sunos_dirent __user *) dirent;
323 buf.previous = NULL;
324 buf.count = cnt;
325 buf.error = 0;
326
327 error = vfs_readdir(file, sunos_filldir, &buf);
328 if (error < 0)
329 goto out_putf;
330
331 lastdirent = buf.previous;
332 error = buf.error;
333 if (lastdirent) {
334 put_user(file->f_pos, &lastdirent->d_off);
335 error = cnt - buf.count;
336 }
337
338out_putf:
339 fput(file);
340out:
341 return error;
342}
343
344/* Old sunos getdirentries, severely broken compatibility stuff here. */
345struct sunos_direntry {
346 u32 d_ino;
347 u16 d_reclen;
348 u16 d_namlen;
349 char d_name[1];
350};
351
352struct sunos_direntry_callback {
353 struct sunos_direntry __user *curr;
354 struct sunos_direntry __user *previous;
355 int count;
356 int error;
357};
358
359static int sunos_filldirentry(void * __buf, const char * name, int namlen,
360 loff_t offset, ino_t ino, unsigned int d_type)
361{
362 struct sunos_direntry __user *dirent;
363 struct sunos_direntry_callback * buf =
364 (struct sunos_direntry_callback *) __buf;
365 int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1);
366
367 buf->error = -EINVAL; /* only used if we fail.. */
368 if (reclen > buf->count)
369 return -EINVAL;
370 dirent = buf->previous;
371 dirent = buf->curr;
372 buf->previous = dirent;
373 put_user(ino, &dirent->d_ino);
374 put_user(namlen, &dirent->d_namlen);
375 put_user(reclen, &dirent->d_reclen);
376 if (copy_to_user(dirent->d_name, name, namlen))
377 return -EFAULT;
378 put_user(0, dirent->d_name + namlen);
379 dirent = (void __user *) dirent + reclen;
380 buf->curr = dirent;
381 buf->count -= reclen;
382 return 0;
383}
384
385asmlinkage int sunos_getdirentries(unsigned int fd,
386 void __user *dirent,
387 int cnt,
388 unsigned int __user *basep)
389{
390 struct file * file;
391 struct sunos_direntry __user *lastdirent;
392 int error = -EBADF;
393 struct sunos_direntry_callback buf;
394
395 if (fd >= SUNOS_NR_OPEN)
396 goto out;
397
398 file = fget(fd);
399 if (!file)
400 goto out;
401
402 error = -EINVAL;
403 if (cnt < (sizeof(struct sunos_direntry) + 255))
404 goto out_putf;
405
406 buf.curr = (struct sunos_direntry __user *) dirent;
407 buf.previous = NULL;
408 buf.count = cnt;
409 buf.error = 0;
410
411 error = vfs_readdir(file, sunos_filldirentry, &buf);
412 if (error < 0)
413 goto out_putf;
414
415 lastdirent = buf.previous;
416 error = buf.error;
417 if (lastdirent) {
418 put_user(file->f_pos, basep);
419 error = cnt - buf.count;
420 }
421
422out_putf:
423 fput(file);
424out:
425 return error;
426}
427
428struct sunos_utsname {
429 char sname[9];
430 char nname[9];
431 char nnext[56];
432 char rel[9];
433 char ver[9];
434 char mach[9];
435};
436
437asmlinkage int sunos_uname(struct sunos_utsname __user *name)
438{
439 int ret;
440
441 down_read(&uts_sem);
e9ff3990 442 ret = copy_to_user(&name->sname[0], &utsname()->sysname[0],
1da177e4 443 sizeof(name->sname) - 1);
e9ff3990 444 ret |= copy_to_user(&name->nname[0], &utsname()->nodename[0],
1da177e4
LT		 445 sizeof(name->nname) - 1);
446 ret |= put_user('\0', &name->nname[8]);
e9ff3990 447 ret |= copy_to_user(&name->rel[0], &utsname()->release[0],
1da177e4 448 sizeof(name->rel) - 1);
e9ff3990 449 ret |= copy_to_user(&name->ver[0], &utsname()->version[0],
1da177e4 450 sizeof(name->ver) - 1);
e9ff3990 451 ret |= copy_to_user(&name->mach[0], &utsname()->machine[0],
1da177e4
LT		 452 sizeof(name->mach) - 1);
453 up_read(&uts_sem);
454 return (ret ? -EFAULT : 0);
455}
456
457asmlinkage int sunos_nosys(void)
458{
459 struct pt_regs *regs;
460 siginfo_t info;
461 static int cnt;
462
463 regs = current_thread_info()->kregs;
464 if (test_thread_flag(TIF_32BIT)) {
465 regs->tpc &= 0xffffffff;
466 regs->tnpc &= 0xffffffff;
467 }
468 info.si_signo = SIGSYS;
469 info.si_errno = 0;
470 info.si_code = __SI_FAULT|0x100;
471 info.si_addr = (void __user *)regs->tpc;
472 info.si_trapno = regs->u_regs[UREG_G1];
473 send_sig_info(SIGSYS, &info, current);
474 if (cnt++ < 4) {
475 printk("Process makes ni_syscall number %d, register dump:\n",
476 (int) regs->u_regs[UREG_G1]);
477 show_regs(regs);
478 }
479 return -ENOSYS;
480}
481
482/* This is not a real and complete implementation yet, just to keep
483 * the easy SunOS binaries happy.
484 */
485asmlinkage int sunos_fpathconf(int fd, int name)
486{
487 int ret;
488
489 switch(name) {
490 case _PCONF_LINK:
491 ret = LINK_MAX;
492 break;
493 case _PCONF_CANON:
494 ret = MAX_CANON;
495 break;
496 case _PCONF_INPUT:
497 ret = MAX_INPUT;
498 break;
499 case _PCONF_NAME:
500 ret = NAME_MAX;
501 break;
502 case _PCONF_PATH:
503 ret = PATH_MAX;
504 break;
505 case _PCONF_PIPE:
506 ret = PIPE_BUF;
507 break;
508 case _PCONF_CHRESTRICT: /* XXX Investigate XXX */
509 ret = 1;
510 break;
511 case _PCONF_NOTRUNC: /* XXX Investigate XXX */
512 case _PCONF_VDISABLE:
513 ret = 0;
514 break;
515 default:
516 ret = -EINVAL;
517 break;
518 }
519 return ret;
520}
521
522asmlinkage int sunos_pathconf(u32 u_path, int name)
523{
524 int ret;
525
526 ret = sunos_fpathconf(0, name); /* XXX cheese XXX */
527 return ret;
528}
529
530asmlinkage int sunos_select(int width, u32 inp, u32 outp, u32 exp, u32 tvp_x)
531{
532 int ret;
533
534 /* SunOS binaries expect that select won't change the tvp contents */
535 ret = compat_sys_select(width, compat_ptr(inp), compat_ptr(outp),
536 compat_ptr(exp), compat_ptr(tvp_x));
537 if (ret == -EINTR && tvp_x) {
538 struct compat_timeval __user *tvp = compat_ptr(tvp_x);
539 time_t sec, usec;
540
541 __get_user(sec, &tvp->tv_sec);
542 __get_user(usec, &tvp->tv_usec);
543 if (sec == 0 && usec == 0)
544 ret = 0;
545 }
546 return ret;
547}
548
549asmlinkage void sunos_nop(void)
550{
551 return;
552}
553
554#if 0 /* This code doesn't translate user pointers correctly,
555 * disable for now. -DaveM
556 */
557
558/* XXXXXXXXXX SunOS mount/umount. XXXXXXXXXXX */
559#define SMNT_RDONLY 1
560#define SMNT_NOSUID 2
561#define SMNT_NEWTYPE 4
562#define SMNT_GRPID 8
563#define SMNT_REMOUNT 16
564#define SMNT_NOSUB 32
565#define SMNT_MULTI 64
566#define SMNT_SYS5 128
567
568struct sunos_fh_t {
569 char fh_data [NFS_FHSIZE];
570};
571
572struct sunos_nfs_mount_args {
573 struct sockaddr_in *addr; /* file server address */
574 struct nfs_fh *fh; /* File handle to be mounted */
575 int flags; /* flags */
576 int wsize; /* write size in bytes */
577 int rsize; /* read size in bytes */
578 int timeo; /* initial timeout in .1 secs */
579 int retrans; /* times to retry send */
580 char *hostname; /* server's hostname */
581 int acregmin; /* attr cache file min secs */
582 int acregmax; /* attr cache file max secs */
583 int acdirmin; /* attr cache dir min secs */
584 int acdirmax; /* attr cache dir max secs */
585 char *netname; /* server's netname */
586};
587
588
589/* Bind the socket on a local reserved port and connect it to the
590 * remote server. This on Linux/i386 is done by the mount program,
591 * not by the kernel.
592 */
593/* XXXXXXXXXXXXXXXXXXXX */
594static int
595sunos_nfs_get_server_fd (int fd, struct sockaddr_in *addr)
596{
597 struct sockaddr_in local;
598 struct sockaddr_in server;
599 int try_port;
600 int ret;
601 struct socket *socket;
602 struct inode *inode;
603 struct file *file;
604
605 file = fget(fd);
606 if (!file)
607 return 0;
608
609 inode = file->f_dentry->d_inode;
610
611 socket = SOCKET_I(inode);
612 local.sin_family = AF_INET;
613 local.sin_addr.s_addr = INADDR_ANY;
614
615 /* IPPORT_RESERVED = 1024, can't find the definition in the kernel */
616 try_port = 1024;
617 do {
618 local.sin_port = htons (--try_port);
619 ret = socket->ops->bind(socket, (struct sockaddr*)&local,
620 sizeof(local));
621 } while (ret && try_port > (1024 / 2));
622
623 if (ret) {
624 fput(file);
625 return 0;
626 }
627
628 server.sin_family = AF_INET;
629 server.sin_addr = addr->sin_addr;
630 server.sin_port = NFS_PORT;
631
632 /* Call sys_connect */
633 ret = socket->ops->connect (socket, (struct sockaddr *) &server,
634 sizeof (server), file->f_flags);
635 fput(file);
636 if (ret < 0)
637 return 0;
638 return 1;
639}
640
641/* XXXXXXXXXXXXXXXXXXXX */
642static int get_default (int value, int def_value)
643{
644 if (value)
645 return value;
646 else
647 return def_value;
648}
649
650/* XXXXXXXXXXXXXXXXXXXX */
651static int sunos_nfs_mount(char *dir_name, int linux_flags, void __user *data)
652{
653 int server_fd, err;
654 char *the_name, *mount_page;
655 struct nfs_mount_data linux_nfs_mount;
656 struct sunos_nfs_mount_args sunos_mount;
657
658 /* Ok, here comes the fun part: Linux's nfs mount needs a
659 * socket connection to the server, but SunOS mount does not
660 * require this, so we use the information on the destination
661 * address to create a socket and bind it to a reserved
662 * port on this system
663 */
664 if (copy_from_user(&sunos_mount, data, sizeof(sunos_mount)))
665 return -EFAULT;
666
667 server_fd = sys_socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
668 if (server_fd < 0)
669 return -ENXIO;
670
671 if (copy_from_user(&linux_nfs_mount.addr, sunos_mount.addr,
672 sizeof(*sunos_mount.addr)) ||
673 copy_from_user(&linux_nfs_mount.root, sunos_mount.fh,
674 sizeof(*sunos_mount.fh))) {
675 sys_close (server_fd);
676 return -EFAULT;
677 }
678
679 if (!sunos_nfs_get_server_fd (server_fd, &linux_nfs_mount.addr)){
680 sys_close (server_fd);
681 return -ENXIO;
682 }
683
684 /* Now, bind it to a locally reserved port */
685 linux_nfs_mount.version = NFS_MOUNT_VERSION;
686 linux_nfs_mount.flags = sunos_mount.flags;
687 linux_nfs_mount.fd = server_fd;
688
689 linux_nfs_mount.rsize = get_default (sunos_mount.rsize, 8192);
690 linux_nfs_mount.wsize = get_default (sunos_mount.wsize, 8192);
691 linux_nfs_mount.timeo = get_default (sunos_mount.timeo, 10);
692 linux_nfs_mount.retrans = sunos_mount.retrans;
693
694 linux_nfs_mount.acregmin = sunos_mount.acregmin;
695 linux_nfs_mount.acregmax = sunos_mount.acregmax;
696 linux_nfs_mount.acdirmin = sunos_mount.acdirmin;
697 linux_nfs_mount.acdirmax = sunos_mount.acdirmax;
698
699 the_name = getname(sunos_mount.hostname);
700 if (IS_ERR(the_name))
701 return PTR_ERR(the_name);
702
703 strlcpy(linux_nfs_mount.hostname, the_name,
704 sizeof(linux_nfs_mount.hostname));
705 putname (the_name);
706
707 mount_page = (char *) get_zeroed_page(GFP_KERNEL);
708 if (!mount_page)
709 return -ENOMEM;
710
711 memcpy(mount_page, &linux_nfs_mount, sizeof(linux_nfs_mount));
712
713 err = do_mount("", dir_name, "nfs", linux_flags, mount_page);
714
715 free_page((unsigned long) mount_page);
716 return err;
717}
718
719/* XXXXXXXXXXXXXXXXXXXX */
720asmlinkage int
721sunos_mount(char *type, char *dir, int flags, void *data)
722{
723 int linux_flags = 0;
724 int ret = -EINVAL;
725 char *dev_fname = 0;
726 char *dir_page, *type_page;
727
728 if (!capable (CAP_SYS_ADMIN))
729 return -EPERM;
730
731 /* We don't handle the integer fs type */
732 if ((flags & SMNT_NEWTYPE) == 0)
733 goto out;
734
735 /* Do not allow for those flags we don't support */
736 if (flags & (SMNT_GRPID|SMNT_NOSUB|SMNT_MULTI|SMNT_SYS5))
737 goto out;
738
739 if (flags & SMNT_REMOUNT)
740 linux_flags |= MS_REMOUNT;
741 if (flags & SMNT_RDONLY)
742 linux_flags |= MS_RDONLY;
743 if (flags & SMNT_NOSUID)
744 linux_flags |= MS_NOSUID;
745
746 dir_page = getname(dir);
747 ret = PTR_ERR(dir_page);
748 if (IS_ERR(dir_page))
749 goto out;
750
751 type_page = getname(type);
752 ret = PTR_ERR(type_page);
753 if (IS_ERR(type_page))
754 goto out1;
755
756 if (strcmp(type_page, "ext2") == 0) {
757 dev_fname = getname(data);
758 } else if (strcmp(type_page, "iso9660") == 0) {
759 dev_fname = getname(data);
760 } else if (strcmp(type_page, "minix") == 0) {
761 dev_fname = getname(data);
762 } else if (strcmp(type_page, "nfs") == 0) {
763 ret = sunos_nfs_mount (dir_page, flags, data);
764 goto out2;
765 } else if (strcmp(type_page, "ufs") == 0) {
766 printk("Warning: UFS filesystem mounts unsupported.\n");
767 ret = -ENODEV;
768 goto out2;
769 } else if (strcmp(type_page, "proc")) {
770 ret = -ENODEV;
771 goto out2;
772 }
773 ret = PTR_ERR(dev_fname);
774 if (IS_ERR(dev_fname))
775 goto out2;
776 lock_kernel();
777 ret = do_mount(dev_fname, dir_page, type_page, linux_flags, NULL);
778 unlock_kernel();
779 if (dev_fname)
780 putname(dev_fname);
781out2:
782 putname(type_page);
783out1:
784 putname(dir_page);
785out:
786 return ret;
787}
788#endif
789
790asmlinkage int sunos_setpgrp(pid_t pid, pid_t pgid)
791{
792 int ret;
793
794 /* So stupid... */
795 if ((!pid || pid == current->pid) &&
796 !pgid) {
797 sys_setsid();
798 ret = 0;
799 } else {
800 ret = sys_setpgid(pid, pgid);
801 }
802 return ret;
803}
804
805/* So stupid... */
806extern long compat_sys_wait4(compat_pid_t, compat_uint_t __user *, int,
807 struct compat_rusage __user *);
808
809asmlinkage int sunos_wait4(compat_pid_t pid, compat_uint_t __user *stat_addr, int options, struct compat_rusage __user *ru)
810{
811 int ret;
812
813 ret = compat_sys_wait4((pid ? pid : ((compat_pid_t)-1)),
814 stat_addr, options, ru);
815 return ret;
816}
817
818extern int kill_pg(int, int, int);
819asmlinkage int sunos_killpg(int pgrp, int sig)
820{
821 return kill_pg(pgrp, sig, 0);
822}
823
824asmlinkage int sunos_audit(void)
825{
826 printk ("sys_audit\n");
827 return -1;
828}
829
830asmlinkage u32 sunos_gethostid(void)
831{
832 u32 ret;
833
834 ret = (((u32)idprom->id_machtype << 24) | ((u32)idprom->id_sernum));
835
836 return ret;
837}
838
839/* sysconf options, for SunOS compatibility */
840#define _SC_ARG_MAX 1
841#define _SC_CHILD_MAX 2
842#define _SC_CLK_TCK 3
843#define _SC_NGROUPS_MAX 4
844#define _SC_OPEN_MAX 5
845#define _SC_JOB_CONTROL 6
846#define _SC_SAVED_IDS 7
847#define _SC_VERSION 8
848
849asmlinkage s32 sunos_sysconf (int name)
850{
851 s32 ret;
852
853 switch (name){
854 case _SC_ARG_MAX:
855 ret = ARG_MAX;
856 break;
857 case _SC_CHILD_MAX:
597d1f06 858 ret = -1; /* no limit */
1da177e4
LT		 859 break;
860 case _SC_CLK_TCK:
861 ret = HZ;
862 break;
863 case _SC_NGROUPS_MAX:
864 ret = NGROUPS_MAX;
865 break;
866 case _SC_OPEN_MAX:
867 ret = OPEN_MAX;
868 break;
869 case _SC_JOB_CONTROL:
870 ret = 1; /* yes, we do support job control */
871 break;
872 case _SC_SAVED_IDS:
873 ret = 1; /* yes, we do support saved uids */
874 break;
875 case _SC_VERSION:
876 /* mhm, POSIX_VERSION is in /usr/include/unistd.h
877 * should it go on /usr/include/linux?
878 */
879 ret = 199009;
880 break;
881 default:
882 ret = -1;
883 break;
884 };
885 return ret;
886}
887
888asmlinkage int sunos_semsys(int op, u32 arg1, u32 arg2, u32 arg3, void __user *ptr)
889{
890 union semun arg4;
891 int ret;
892
893 switch (op) {
894 case 0:
895 /* Most arguments match on a 1:1 basis but cmd doesn't */
896 switch(arg3) {
897 case 4:
898 arg3=GETPID; break;
899 case 5:
900 arg3=GETVAL; break;
901 case 6:
902 arg3=GETALL; break;
903 case 3:
904 arg3=GETNCNT; break;
905 case 7:
906 arg3=GETZCNT; break;
907 case 8:
908 arg3=SETVAL; break;
909 case 9:
910 arg3=SETALL; break;
911 }
912 /* sys_semctl(): */
913 /* value to modify semaphore to */
914 arg4.__pad = ptr;
915 ret = sys_semctl((int)arg1, (int)arg2, (int)arg3, arg4);
916 break;
917 case 1:
918 /* sys_semget(): */
919 ret = sys_semget((key_t)arg1, (int)arg2, (int)arg3);
920 break;
921 case 2:
922 /* sys_semop(): */
923 ret = sys_semop((int)arg1, (struct sembuf __user *)(unsigned long)arg2,
924 (unsigned int) arg3);
925 break;
926 default:
927 ret = -EINVAL;
928 break;
929 };
930 return ret;
931}
932
933struct msgbuf32 {
934 s32 mtype;
935 char mtext[1];
936};
937
938struct ipc_perm32
939{
940 key_t key;
941 compat_uid_t uid;
942 compat_gid_t gid;
943 compat_uid_t cuid;
944 compat_gid_t cgid;
945 compat_mode_t mode;
946 unsigned short seq;
947};
948
949struct msqid_ds32
950{
951 struct ipc_perm32 msg_perm;
952 u32 msg_first;
953 u32 msg_last;
954 compat_time_t msg_stime;
955 compat_time_t msg_rtime;
956 compat_time_t msg_ctime;
957 u32 wwait;
958 u32 rwait;
959 unsigned short msg_cbytes;
960 unsigned short msg_qnum;
961 unsigned short msg_qbytes;
962 compat_ipc_pid_t msg_lspid;
963 compat_ipc_pid_t msg_lrpid;
964};
965
966static inline int sunos_msqid_get(struct msqid_ds32 __user *user,
967 struct msqid_ds *kern)
968{
969 if (get_user(kern->msg_perm.key, &user->msg_perm.key) ||
970 __get_user(kern->msg_perm.uid, &user->msg_perm.uid) ||
971 __get_user(kern->msg_perm.gid, &user->msg_perm.gid) ||
972 __get_user(kern->msg_perm.cuid, &user->msg_perm.cuid) ||
973 __get_user(kern->msg_perm.cgid, &user->msg_perm.cgid) ||
974 __get_user(kern->msg_stime, &user->msg_stime) ||
975 __get_user(kern->msg_rtime, &user->msg_rtime) ||
976 __get_user(kern->msg_ctime, &user->msg_ctime) ||
977 __get_user(kern->msg_ctime, &user->msg_cbytes) ||
978 __get_user(kern->msg_ctime, &user->msg_qnum) ||
979 __get_user(kern->msg_ctime, &user->msg_qbytes) ||
980 __get_user(kern->msg_ctime, &user->msg_lspid) ||
981 __get_user(kern->msg_ctime, &user->msg_lrpid))
982 return -EFAULT;
983 return 0;
984}
985
986static inline int sunos_msqid_put(struct msqid_ds32 __user *user,
987 struct msqid_ds *kern)
988{
989 if (put_user(kern->msg_perm.key, &user->msg_perm.key) ||
990 __put_user(kern->msg_perm.uid, &user->msg_perm.uid) ||
991 __put_user(kern->msg_perm.gid, &user->msg_perm.gid) ||
992 __put_user(kern->msg_perm.cuid, &user->msg_perm.cuid) ||
993 __put_user(kern->msg_perm.cgid, &user->msg_perm.cgid) ||
994 __put_user(kern->msg_stime, &user->msg_stime) ||
995 __put_user(kern->msg_rtime, &user->msg_rtime) ||
996 __put_user(kern->msg_ctime, &user->msg_ctime) ||
997 __put_user(kern->msg_ctime, &user->msg_cbytes) ||
998 __put_user(kern->msg_ctime, &user->msg_qnum) ||
999 __put_user(kern->msg_ctime, &user->msg_qbytes) ||
1000 __put_user(kern->msg_ctime, &user->msg_lspid) ||
1001 __put_user(kern->msg_ctime, &user->msg_lrpid))
1002 return -EFAULT;
1003 return 0;
1004}
1005
1006static inline int sunos_msgbuf_get(struct msgbuf32 __user *user, struct msgbuf *kern, int len)
1007{
1008 if (get_user(kern->mtype, &user->mtype) ||
1009 __copy_from_user(kern->mtext, &user->mtext, len))
1010 return -EFAULT;
1011 return 0;
1012}
1013
1014static inline int sunos_msgbuf_put(struct msgbuf32 __user *user, struct msgbuf *kern, int len)
1015{
1016 if (put_user(kern->mtype, &user->mtype) ||
1017 __copy_to_user(user->mtext, kern->mtext, len))
1018 return -EFAULT;
1019 return 0;
1020}
1021
1022asmlinkage int sunos_msgsys(int op, u32 arg1, u32 arg2, u32 arg3, u32 arg4)
1023{
1024 struct sparc_stackf32 __user *sp;
1025 struct msqid_ds kds;
1026 struct msgbuf *kmbuf;
1027 mm_segment_t old_fs = get_fs();
1028 u32 arg5;
1029 int rval;
1030
1031 switch(op) {
1032 case 0:
1033 rval = sys_msgget((key_t)arg1, (int)arg2);
1034 break;
1035 case 1:
1036 if (!sunos_msqid_get((struct msqid_ds32 __user *)(unsigned long)arg3, &kds)) {
1037 set_fs(KERNEL_DS);
1038 rval = sys_msgctl((int)arg1, (int)arg2,
1039 (struct msqid_ds __user *)(unsigned long)arg3);
1040 set_fs(old_fs);
1041 if (!rval)
1042 rval = sunos_msqid_put((struct msqid_ds32 __user *)(unsigned long)arg3,
1043 &kds);
1044 } else
1045 rval = -EFAULT;
1046 break;
1047 case 2:
1048 rval = -EFAULT;
1049 kmbuf = (struct msgbuf *)kmalloc(sizeof(struct msgbuf) + arg3,
1050 GFP_KERNEL);
1051 if (!kmbuf)
1052 break;
1053 sp = (struct sparc_stackf32 __user *)
1054 (current_thread_info()->kregs->u_regs[UREG_FP] & 0xffffffffUL);
1055 if (get_user(arg5, &sp->xxargs[0])) {
1056 rval = -EFAULT;
1057 kfree(kmbuf);
1058 break;
1059 }
1060 set_fs(KERNEL_DS);
1061 rval = sys_msgrcv((int)arg1, (struct msgbuf __user *) kmbuf,
1062 (size_t)arg3,
1063 (long)arg4, (int)arg5);
1064 set_fs(old_fs);
1065 if (!rval)
1066 rval = sunos_msgbuf_put((struct msgbuf32 __user *)(unsigned long)arg2,
1067 kmbuf, arg3);
1068 kfree(kmbuf);
1069 break;
1070 case 3:
1071 rval = -EFAULT;
1072 kmbuf = (struct msgbuf *)kmalloc(sizeof(struct msgbuf) + arg3,
1073 GFP_KERNEL);
1074 if (!kmbuf || sunos_msgbuf_get((struct msgbuf32 __user *)(unsigned long)arg2,
1075 kmbuf, arg3))
1076 break;
1077 set_fs(KERNEL_DS);
1078 rval = sys_msgsnd((int)arg1, (struct msgbuf __user *) kmbuf,
1079 (size_t)arg3, (int)arg4);
1080 set_fs(old_fs);
1081 kfree(kmbuf);
1082 break;
1083 default:
1084 rval = -EINVAL;
1085 break;
1086 }
1087 return rval;
1088}
1089
1090struct shmid_ds32 {
1091 struct ipc_perm32 shm_perm;
1092 int shm_segsz;
1093 compat_time_t shm_atime;
1094 compat_time_t shm_dtime;
1095 compat_time_t shm_ctime;
1096 compat_ipc_pid_t shm_cpid;
1097 compat_ipc_pid_t shm_lpid;
1098 unsigned short shm_nattch;
1099};
1100
1101static inline int sunos_shmid_get(struct shmid_ds32 __user *user,
1102 struct shmid_ds *kern)
1103{
1104 if (get_user(kern->shm_perm.key, &user->shm_perm.key) ||
1105 __get_user(kern->shm_perm.uid, &user->shm_perm.uid) ||
1106 __get_user(kern->shm_perm.gid, &user->shm_perm.gid) ||
1107 __get_user(kern->shm_perm.cuid, &user->shm_perm.cuid) ||
1108 __get_user(kern->shm_perm.cgid, &user->shm_perm.cgid) ||
1109 __get_user(kern->shm_segsz, &user->shm_segsz) ||
1110 __get_user(kern->shm_atime, &user->shm_atime) ||
1111 __get_user(kern->shm_dtime, &user->shm_dtime) ||
1112 __get_user(kern->shm_ctime, &user->shm_ctime) ||
1113 __get_user(kern->shm_cpid, &user->shm_cpid) ||
1114 __get_user(kern->shm_lpid, &user->shm_lpid) ||
1115 __get_user(kern->shm_nattch, &user->shm_nattch))
1116 return -EFAULT;
1117 return 0;
1118}
1119
1120static inline int sunos_shmid_put(struct shmid_ds32 __user *user,
1121 struct shmid_ds *kern)
1122{
1123 if (put_user(kern->shm_perm.key, &user->shm_perm.key) ||
1124 __put_user(kern->shm_perm.uid, &user->shm_perm.uid) ||
1125 __put_user(kern->shm_perm.gid, &user->shm_perm.gid) ||
1126 __put_user(kern->shm_perm.cuid, &user->shm_perm.cuid) ||
1127 __put_user(kern->shm_perm.cgid, &user->shm_perm.cgid) ||
1128 __put_user(kern->shm_segsz, &user->shm_segsz) ||
1129 __put_user(kern->shm_atime, &user->shm_atime) ||
1130 __put_user(kern->shm_dtime, &user->shm_dtime) ||
1131 __put_user(kern->shm_ctime, &user->shm_ctime) ||
1132 __put_user(kern->shm_cpid, &user->shm_cpid) ||
1133 __put_user(kern->shm_lpid, &user->shm_lpid) ||
1134 __put_user(kern->shm_nattch, &user->shm_nattch))
1135 return -EFAULT;
1136 return 0;
1137}
1138
1139asmlinkage int sunos_shmsys(int op, u32 arg1, u32 arg2, u32 arg3)
1140{
1141 struct shmid_ds ksds;
1142 unsigned long raddr;
1143 mm_segment_t old_fs = get_fs();
1144 int rval;
1145
1146 switch(op) {
1147 case 0:
1148 /* do_shmat(): attach a shared memory area */
1149 rval = do_shmat((int)arg1,(char __user *)(unsigned long)arg2,(int)arg3,&raddr);
1150 if (!rval)
1151 rval = (int) raddr;
1152 break;
1153 case 1:
1154 /* sys_shmctl(): modify shared memory area attr. */
1155 if (!sunos_shmid_get((struct shmid_ds32 __user *)(unsigned long)arg3, &ksds)) {
1156 set_fs(KERNEL_DS);
1157 rval = sys_shmctl((int) arg1,(int) arg2,
1158 (struct shmid_ds __user *) &ksds);
1159 set_fs(old_fs);
1160 if (!rval)
1161 rval = sunos_shmid_put((struct shmid_ds32 __user *)(unsigned long)arg3,
1162 &ksds);
1163 } else
1164 rval = -EFAULT;
1165 break;
1166 case 2:
1167 /* sys_shmdt(): detach a shared memory area */
1168 rval = sys_shmdt((char __user *)(unsigned long)arg1);
1169 break;
1170 case 3:
1171 /* sys_shmget(): get a shared memory area */
1172 rval = sys_shmget((key_t)arg1,(int)arg2,(int)arg3);
1173 break;
1174 default:
1175 rval = -EINVAL;
1176 break;
1177 };
1178 return rval;
1179}
1180
1181extern asmlinkage long sparc32_open(const char __user * filename, int flags, int mode);
1182
1183asmlinkage int sunos_open(u32 fname, int flags, int mode)
1184{
1185 const char __user *filename = compat_ptr(fname);
1186
1187 return sparc32_open(filename, flags, mode);
1188}
1189
1190#define SUNOS_EWOULDBLOCK 35
1191
1192/* see the sunos man page read(2v) for an explanation
1193 of this garbage. We use O_NDELAY to mark
1194 file descriptors that have been set non-blocking
1195 using 4.2BSD style calls. (tridge) */
1196
1197static inline int check_nonblock(int ret, int fd)
1198{
1199 if (ret == -EAGAIN) {
1200 struct file * file = fget(fd);
1201 if (file) {
1202 if (file->f_flags & O_NDELAY)
1203 ret = -SUNOS_EWOULDBLOCK;
1204 fput(file);
1205 }
1206 }
1207 return ret;
1208}
1209
1210asmlinkage int sunos_read(unsigned int fd, char __user *buf, u32 count)
1211{
1212 int ret;
1213
1214 ret = check_nonblock(sys_read(fd, buf, count), fd);
1215 return ret;
1216}
1217
1218asmlinkage int sunos_readv(u32 fd, void __user *vector, s32 count)
1219{
1220 int ret;
1221
1222 ret = check_nonblock(compat_sys_readv(fd, vector, count), fd);
1223 return ret;
1224}
1225
1226asmlinkage int sunos_write(unsigned int fd, char __user *buf, u32 count)
1227{
1228 int ret;
1229
1230 ret = check_nonblock(sys_write(fd, buf, count), fd);
1231 return ret;
1232}
1233
1234asmlinkage int sunos_writev(u32 fd, void __user *vector, s32 count)
1235{
1236 int ret;
1237
1238 ret = check_nonblock(compat_sys_writev(fd, vector, count), fd);
1239 return ret;
1240}
1241
1242asmlinkage int sunos_recv(u32 __fd, void __user *ubuf, int size, unsigned flags)
1243{
1244 int ret, fd = (int) __fd;
1245
1246 ret = check_nonblock(sys_recv(fd, ubuf, size, flags), fd);
1247 return ret;
1248}
1249
1250asmlinkage int sunos_send(u32 __fd, void __user *buff, int len, unsigned flags)
1251{
1252 int ret, fd = (int) __fd;
1253
1254 ret = check_nonblock(sys_send(fd, buff, len, flags), fd);
1255 return ret;
1256}
1257
1258asmlinkage int sunos_accept(u32 __fd, struct sockaddr __user *sa, int __user *addrlen)
1259{
1260 int ret, fd = (int) __fd;
1261
1262 while (1) {
1263 ret = check_nonblock(sys_accept(fd, sa, addrlen), fd);
1264 if (ret != -ENETUNREACH && ret != -EHOSTUNREACH)
1265 break;
1266 }
1267 return ret;
1268}
1269
1270#define SUNOS_SV_INTERRUPT 2
1271
1272asmlinkage int sunos_sigaction (int sig,
1273 struct old_sigaction32 __user *act,
1274 struct old_sigaction32 __user *oact)
1275{
1276 struct k_sigaction new_ka, old_ka;
1277 int ret;
1278
1279 if (act) {
1280 compat_old_sigset_t mask;
1281 u32 u_handler;
1282
1283 if (get_user(u_handler, &act->sa_handler) ||
1284 __get_user(new_ka.sa.sa_flags, &act->sa_flags))
1285 return -EFAULT;
1286 new_ka.sa.sa_handler = compat_ptr(u_handler);
1287 __get_user(mask, &act->sa_mask);
1288 new_ka.sa.sa_restorer = NULL;
1289 new_ka.ka_restorer = NULL;
1290 siginitset(&new_ka.sa.sa_mask, mask);
1291 new_ka.sa.sa_flags ^= SUNOS_SV_INTERRUPT;
1292 }
1293
1294 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
1295
1296 if (!ret && oact) {
1297 old_ka.sa.sa_flags ^= SUNOS_SV_INTERRUPT;
1298 if (put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler) ||
1299 __put_user(old_ka.sa.sa_flags, &oact->sa_flags))
1300 return -EFAULT;
1301 __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
1302 }
1303
1304 return ret;
1305}
1306
1307asmlinkage int sunos_setsockopt(u32 __fd, u32 __level, u32 __optname,
1308 char __user *optval, u32 __optlen)
1309{
1310 int fd = (int) __fd;
1311 int level = (int) __level;
1312 int optname = (int) __optname;
1313 int optlen = (int) __optlen;
1314 int tr_opt = optname;
1315 int ret;
1316
1317 if (level == SOL_IP) {
1318 /* Multicast socketopts (ttl, membership) */
1319 if (tr_opt >=2 && tr_opt <= 6)
1320 tr_opt += 30;
1321 }
1322 ret = sys_setsockopt(fd, level, tr_opt,
1323 optval, optlen);
1324 return ret;
1325}
1326
1327asmlinkage int sunos_getsockopt(u32 __fd, u32 __level, u32 __optname,
1328 char __user *optval, int __user *optlen)
1329{
1330 int fd = (int) __fd;
1331 int level = (int) __level;
1332 int optname = (int) __optname;
1333 int tr_opt = optname;
1334 int ret;
1335
1336 if (level == SOL_IP) {
1337 /* Multicast socketopts (ttl, membership) */
1338 if (tr_opt >=2 && tr_opt <= 6)
1339 tr_opt += 30;
1340 }
1341 ret = compat_sys_getsockopt(fd, level, tr_opt,
1342 optval, optlen);
1343 return ret;
1344}
Linux 6.x block layer and io_uring tree(s)