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[linux-2.6-block.git] / arch / sparc64 / kernel / sys_sunos32.c
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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>
14cc6aba 46#include <asm/compat_signal.h>
1da177e4
LT		 47
48/* For the nfs mount emulation */
49#include <linux/socket.h>
50#include <linux/in.h>
51#include <linux/nfs.h>
52#include <linux/nfs2.h>
53#include <linux/nfs_mount.h>
54
55/* for sunos_select */
56#include <linux/time.h>
57#include <linux/personality.h>
58
59/* For SOCKET_I */
60#include <linux/socket.h>
61#include <net/sock.h>
62#include <net/compat.h>
63
64#define SUNOS_NR_OPEN 256
65
66asmlinkage u32 sunos_mmap(u32 addr, u32 len, u32 prot, u32 flags, u32 fd, u32 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 struct inode * inode;
81 if (fd >= SUNOS_NR_OPEN)
82 goto out;
83 file = fget(fd);
84 if (!file)
85 goto out;
1250ca4c 86 inode = file->f_path.dentry->d_inode;
1da177e4
LT		 87 if (imajor(inode) == MEM_MAJOR && iminor(inode) == 5) {
88 flags |= MAP_ANONYMOUS;
89 fput(file);
90 file = NULL;
91 }
92 }
93
94 retval = -EINVAL;
95 if (!(flags & MAP_FIXED))
96 addr = 0;
97 else if (len > 0xf0000000 || addr > 0xf0000000 - len)
98 goto out_putf;
99 ret_type = flags & _MAP_NEW;
100 flags &= ~_MAP_NEW;
101
102 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
103 down_write(&current->mm->mmap_sem);
104 retval = do_mmap(file,
105 (unsigned long) addr, (unsigned long) len,
106 (unsigned long) prot, (unsigned long) flags,
107 (unsigned long) off);
108 up_write(&current->mm->mmap_sem);
109 if (!ret_type)
110 retval = ((retval < 0xf0000000) ? 0 : retval);
111out_putf:
112 if (file)
113 fput(file);
114out:
115 return (u32) retval;
116}
117
118asmlinkage int sunos_mctl(u32 addr, u32 len, int function, u32 arg)
119{
120 return 0;
121}
122
123asmlinkage int sunos_brk(u32 baddr)
124{
125 int freepages, retval = -ENOMEM;
126 unsigned long rlim;
127 unsigned long newbrk, oldbrk, brk = (unsigned long) baddr;
128
129 down_write(&current->mm->mmap_sem);
130 if (brk < current->mm->end_code)
131 goto out;
132 newbrk = PAGE_ALIGN(brk);
133 oldbrk = PAGE_ALIGN(current->mm->brk);
134 retval = 0;
135 if (oldbrk == newbrk) {
136 current->mm->brk = brk;
137 goto out;
138 }
139 /* Always allow shrinking brk. */
140 if (brk <= current->mm->brk) {
141 current->mm->brk = brk;
142 do_munmap(current->mm, newbrk, oldbrk-newbrk);
143 goto out;
144 }
145 /* Check against rlimit and stack.. */
146 retval = -ENOMEM;
147 rlim = current->signal->rlim[RLIMIT_DATA].rlim_cur;
148 if (rlim >= RLIM_INFINITY)
149 rlim = ~0;
150 if (brk - current->mm->end_code > rlim)
151 goto out;
152 /* Check against existing mmap mappings. */
153 if (find_vma_intersection(current->mm, oldbrk, newbrk+PAGE_SIZE))
154 goto out;
155 /* stupid algorithm to decide if we have enough memory: while
156 * simple, it hopefully works in most obvious cases.. Easy to
157 * fool it, but this should catch most mistakes.
158 */
347ce434 159 freepages = global_page_state(NR_FILE_PAGES);
1da177e4
LT		 160 freepages >>= 1;
161 freepages += nr_free_pages();
162 freepages += nr_swap_pages;
163 freepages -= num_physpages >> 4;
164 freepages -= (newbrk-oldbrk) >> PAGE_SHIFT;
165 if (freepages < 0)
166 goto out;
167 /* Ok, we have probably got enough memory - let it rip. */
168 current->mm->brk = brk;
169 do_brk(oldbrk, newbrk-oldbrk);
170 retval = 0;
171out:
172 up_write(&current->mm->mmap_sem);
173 return retval;
174}
175
176asmlinkage u32 sunos_sbrk(int increment)
177{
178 int error, oldbrk;
179
180 /* This should do it hopefully... */
181 oldbrk = (int)current->mm->brk;
182 error = sunos_brk(((int) current->mm->brk) + increment);
183 if (!error)
184 error = oldbrk;
185 return error;
186}
187
188asmlinkage u32 sunos_sstk(int increment)
189{
190 printk("%s: Call to sunos_sstk(increment<%d>) is unsupported\n",
191 current->comm, increment);
192
193 return (u32)-1;
194}
195
196/* Give hints to the kernel as to what paging strategy to use...
197 * Completely bogus, don't remind me.
198 */
199#define VA_NORMAL 0 /* Normal vm usage expected */
200#define VA_ABNORMAL 1 /* Abnormal/random vm usage probable */
201#define VA_SEQUENTIAL 2 /* Accesses will be of a sequential nature */
202#define VA_INVALIDATE 3 /* Page table entries should be flushed ??? */
203static char *vstrings[] = {
204 "VA_NORMAL",
205 "VA_ABNORMAL",
206 "VA_SEQUENTIAL",
207 "VA_INVALIDATE",
208};
209
210asmlinkage void sunos_vadvise(u32 strategy)
211{
212 static int count;
213
214 /* I wanna see who uses this... */
215 if (count++ < 5)
216 printk("%s: Advises us to use %s paging strategy\n",
217 current->comm,
218 strategy <= 3 ? vstrings[strategy] : "BOGUS");
219}
220
221/* This just wants the soft limit (ie. rlim_cur element) of the RLIMIT_NOFILE
222 * resource limit and is for backwards compatibility with older sunos
223 * revs.
224 */
225asmlinkage int sunos_getdtablesize(void)
226{
227 return SUNOS_NR_OPEN;
228}
229
230
231#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
232
233asmlinkage u32 sunos_sigblock(u32 blk_mask)
234{
235 u32 old;
236
237 spin_lock_irq(&current->sighand->siglock);
238 old = (u32) current->blocked.sig[0];
239 current->blocked.sig[0] |= (blk_mask & _BLOCKABLE);
240 recalc_sigpending();
241 spin_unlock_irq(&current->sighand->siglock);
242 return old;
243}
244
245asmlinkage u32 sunos_sigsetmask(u32 newmask)
246{
247 u32 retval;
248
249 spin_lock_irq(&current->sighand->siglock);
250 retval = (u32) current->blocked.sig[0];
251 current->blocked.sig[0] = (newmask & _BLOCKABLE);
252 recalc_sigpending();
253 spin_unlock_irq(&current->sighand->siglock);
254 return retval;
255}
256
257/* SunOS getdents is very similar to the newer Linux (iBCS2 compliant) */
258/* getdents system call, the format of the structure just has a different */
259/* layout (d_off+d_ino instead of d_ino+d_off) */
260struct sunos_dirent {
261 s32 d_off;
262 u32 d_ino;
263 u16 d_reclen;
264 u16 d_namlen;
265 char d_name[1];
266};
267
268struct sunos_dirent_callback {
269 struct sunos_dirent __user *curr;
270 struct sunos_dirent __user *previous;
271 int count;
272 int error;
273};
274
275#define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de)))
276#define ROUND_UP(x) (((x)+sizeof(s32)-1) & ~(sizeof(s32)-1))
277
278static int sunos_filldir(void * __buf, const char * name, int namlen,
279 loff_t offset, ino_t ino, unsigned int d_type)
280{
281 struct sunos_dirent __user *dirent;
282 struct sunos_dirent_callback * buf = (struct sunos_dirent_callback *) __buf;
283 int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1);
afefdbb2 284 u32 d_ino;
1da177e4
LT		 285
286 buf->error = -EINVAL; /* only used if we fail.. */
287 if (reclen > buf->count)
288 return -EINVAL;
afefdbb2
DH		 289 d_ino = ino;
290 if (sizeof(d_ino) < sizeof(ino) && d_ino != ino)
291 return -EOVERFLOW;
1da177e4
LT		 292 dirent = buf->previous;
293 if (dirent)
294 put_user(offset, &dirent->d_off);
295 dirent = buf->curr;
296 buf->previous = dirent;
afefdbb2 297 put_user(d_ino, &dirent->d_ino);
1da177e4
LT		 298 put_user(namlen, &dirent->d_namlen);
299 put_user(reclen, &dirent->d_reclen);
300 if (copy_to_user(dirent->d_name, name, namlen))
301 return -EFAULT;
302 put_user(0, dirent->d_name + namlen);
303 dirent = (void __user *) dirent + reclen;
304 buf->curr = dirent;
305 buf->count -= reclen;
306 return 0;
307}
308
309asmlinkage int sunos_getdents(unsigned int fd, void __user *dirent, int cnt)
310{
311 struct file * file;
312 struct sunos_dirent __user *lastdirent;
313 struct sunos_dirent_callback buf;
314 int error = -EBADF;
315
316 if (fd >= SUNOS_NR_OPEN)
317 goto out;
318
319 file = fget(fd);
320 if (!file)
321 goto out;
322
323 error = -EINVAL;
324 if (cnt < (sizeof(struct sunos_dirent) + 255))
325 goto out_putf;
326
327 buf.curr = (struct sunos_dirent __user *) dirent;
328 buf.previous = NULL;
329 buf.count = cnt;
330 buf.error = 0;
331
332 error = vfs_readdir(file, sunos_filldir, &buf);
333 if (error < 0)
334 goto out_putf;
335
336 lastdirent = buf.previous;
337 error = buf.error;
338 if (lastdirent) {
339 put_user(file->f_pos, &lastdirent->d_off);
340 error = cnt - buf.count;
341 }
342
343out_putf:
344 fput(file);
345out:
346 return error;
347}
348
349/* Old sunos getdirentries, severely broken compatibility stuff here. */
350struct sunos_direntry {
351 u32 d_ino;
352 u16 d_reclen;
353 u16 d_namlen;
354 char d_name[1];
355};
356
357struct sunos_direntry_callback {
358 struct sunos_direntry __user *curr;
359 struct sunos_direntry __user *previous;
360 int count;
361 int error;
362};
363
364static int sunos_filldirentry(void * __buf, const char * name, int namlen,
365 loff_t offset, ino_t ino, unsigned int d_type)
366{
367 struct sunos_direntry __user *dirent;
368 struct sunos_direntry_callback * buf =
369 (struct sunos_direntry_callback *) __buf;
370 int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1);
afefdbb2 371 u32 d_ino;
1da177e4
LT		 372
373 buf->error = -EINVAL; /* only used if we fail.. */
374 if (reclen > buf->count)
375 return -EINVAL;
afefdbb2
DH		 376 d_ino = ino;
377 if (sizeof(d_ino) < sizeof(ino) && d_ino != ino)
378 return -EOVERFLOW;
1da177e4
LT		 379 dirent = buf->previous;
380 dirent = buf->curr;
381 buf->previous = dirent;
afefdbb2 382 put_user(d_ino, &dirent->d_ino);
1da177e4
LT		 383 put_user(namlen, &dirent->d_namlen);
384 put_user(reclen, &dirent->d_reclen);
385 if (copy_to_user(dirent->d_name, name, namlen))
386 return -EFAULT;
387 put_user(0, dirent->d_name + namlen);
388 dirent = (void __user *) dirent + reclen;
389 buf->curr = dirent;
390 buf->count -= reclen;
391 return 0;
392}
393
394asmlinkage int sunos_getdirentries(unsigned int fd,
395 void __user *dirent,
396 int cnt,
397 unsigned int __user *basep)
398{
399 struct file * file;
400 struct sunos_direntry __user *lastdirent;
401 int error = -EBADF;
402 struct sunos_direntry_callback buf;
403
404 if (fd >= SUNOS_NR_OPEN)
405 goto out;
406
407 file = fget(fd);
408 if (!file)
409 goto out;
410
411 error = -EINVAL;
412 if (cnt < (sizeof(struct sunos_direntry) + 255))
413 goto out_putf;
414
415 buf.curr = (struct sunos_direntry __user *) dirent;
416 buf.previous = NULL;
417 buf.count = cnt;
418 buf.error = 0;
419
420 error = vfs_readdir(file, sunos_filldirentry, &buf);
421 if (error < 0)
422 goto out_putf;
423
424 lastdirent = buf.previous;
425 error = buf.error;
426 if (lastdirent) {
427 put_user(file->f_pos, basep);
428 error = cnt - buf.count;
429 }
430
431out_putf:
432 fput(file);
433out:
434 return error;
435}
436
437struct sunos_utsname {
438 char sname[9];
439 char nname[9];
440 char nnext[56];
441 char rel[9];
442 char ver[9];
443 char mach[9];
444};
445
446asmlinkage int sunos_uname(struct sunos_utsname __user *name)
447{
448 int ret;
449
450 down_read(&uts_sem);
e9ff3990 451 ret = copy_to_user(&name->sname[0], &utsname()->sysname[0],
1da177e4 452 sizeof(name->sname) - 1);
e9ff3990 453 ret |= copy_to_user(&name->nname[0], &utsname()->nodename[0],
1da177e4
LT		 454 sizeof(name->nname) - 1);
455 ret |= put_user('\0', &name->nname[8]);
e9ff3990 456 ret |= copy_to_user(&name->rel[0], &utsname()->release[0],
1da177e4 457 sizeof(name->rel) - 1);
e9ff3990 458 ret |= copy_to_user(&name->ver[0], &utsname()->version[0],
1da177e4 459 sizeof(name->ver) - 1);
e9ff3990 460 ret |= copy_to_user(&name->mach[0], &utsname()->machine[0],
1da177e4
LT		 461 sizeof(name->mach) - 1);
462 up_read(&uts_sem);
463 return (ret ? -EFAULT : 0);
464}
465
466asmlinkage int sunos_nosys(void)
467{
468 struct pt_regs *regs;
469 siginfo_t info;
470 static int cnt;
471
472 regs = current_thread_info()->kregs;
473 if (test_thread_flag(TIF_32BIT)) {
474 regs->tpc &= 0xffffffff;
475 regs->tnpc &= 0xffffffff;
476 }
477 info.si_signo = SIGSYS;
478 info.si_errno = 0;
479 info.si_code = __SI_FAULT|0x100;
480 info.si_addr = (void __user *)regs->tpc;
481 info.si_trapno = regs->u_regs[UREG_G1];
482 send_sig_info(SIGSYS, &info, current);
483 if (cnt++ < 4) {
484 printk("Process makes ni_syscall number %d, register dump:\n",
485 (int) regs->u_regs[UREG_G1]);
486 show_regs(regs);
487 }
488 return -ENOSYS;
489}
490
491/* This is not a real and complete implementation yet, just to keep
492 * the easy SunOS binaries happy.
493 */
494asmlinkage int sunos_fpathconf(int fd, int name)
495{
496 int ret;
497
498 switch(name) {
499 case _PCONF_LINK:
500 ret = LINK_MAX;
501 break;
502 case _PCONF_CANON:
503 ret = MAX_CANON;
504 break;
505 case _PCONF_INPUT:
506 ret = MAX_INPUT;
507 break;
508 case _PCONF_NAME:
509 ret = NAME_MAX;
510 break;
511 case _PCONF_PATH:
512 ret = PATH_MAX;
513 break;
514 case _PCONF_PIPE:
515 ret = PIPE_BUF;
516 break;
517 case _PCONF_CHRESTRICT: /* XXX Investigate XXX */
518 ret = 1;
519 break;
520 case _PCONF_NOTRUNC: /* XXX Investigate XXX */
521 case _PCONF_VDISABLE:
522 ret = 0;
523 break;
524 default:
525 ret = -EINVAL;
526 break;
527 }
528 return ret;
529}
530
531asmlinkage int sunos_pathconf(u32 u_path, int name)
532{
533 int ret;
534
535 ret = sunos_fpathconf(0, name); /* XXX cheese XXX */
536 return ret;
537}
538
539asmlinkage int sunos_select(int width, u32 inp, u32 outp, u32 exp, u32 tvp_x)
540{
541 int ret;
542
543 /* SunOS binaries expect that select won't change the tvp contents */
544 ret = compat_sys_select(width, compat_ptr(inp), compat_ptr(outp),
545 compat_ptr(exp), compat_ptr(tvp_x));
546 if (ret == -EINTR && tvp_x) {
547 struct compat_timeval __user *tvp = compat_ptr(tvp_x);
548 time_t sec, usec;
549
550 __get_user(sec, &tvp->tv_sec);
551 __get_user(usec, &tvp->tv_usec);
552 if (sec == 0 && usec == 0)
553 ret = 0;
554 }
555 return ret;
556}
557
558asmlinkage void sunos_nop(void)
559{
560 return;
561}
562
563#if 0 /* This code doesn't translate user pointers correctly,
564 * disable for now. -DaveM
565 */
566
567/* XXXXXXXXXX SunOS mount/umount. XXXXXXXXXXX */
568#define SMNT_RDONLY 1
569#define SMNT_NOSUID 2
570#define SMNT_NEWTYPE 4
571#define SMNT_GRPID 8
572#define SMNT_REMOUNT 16
573#define SMNT_NOSUB 32
574#define SMNT_MULTI 64
575#define SMNT_SYS5 128
576
577struct sunos_fh_t {
578 char fh_data [NFS_FHSIZE];
579};
580
581struct sunos_nfs_mount_args {
582 struct sockaddr_in *addr; /* file server address */
583 struct nfs_fh *fh; /* File handle to be mounted */
584 int flags; /* flags */
585 int wsize; /* write size in bytes */
586 int rsize; /* read size in bytes */
587 int timeo; /* initial timeout in .1 secs */
588 int retrans; /* times to retry send */
589 char *hostname; /* server's hostname */
590 int acregmin; /* attr cache file min secs */
591 int acregmax; /* attr cache file max secs */
592 int acdirmin; /* attr cache dir min secs */
593 int acdirmax; /* attr cache dir max secs */
594 char *netname; /* server's netname */
595};
596
597
598/* Bind the socket on a local reserved port and connect it to the
599 * remote server. This on Linux/i386 is done by the mount program,
600 * not by the kernel.
601 */
602/* XXXXXXXXXXXXXXXXXXXX */
603static int
604sunos_nfs_get_server_fd (int fd, struct sockaddr_in *addr)
605{
606 struct sockaddr_in local;
607 struct sockaddr_in server;
608 int try_port;
609 int ret;
610 struct socket *socket;
611 struct inode *inode;
612 struct file *file;
613
614 file = fget(fd);
615 if (!file)
616 return 0;
617
1250ca4c 618 inode = file->f_path.dentry->d_inode;
1da177e4
LT		 619
620 socket = SOCKET_I(inode);
621 local.sin_family = AF_INET;
622 local.sin_addr.s_addr = INADDR_ANY;
623
624 /* IPPORT_RESERVED = 1024, can't find the definition in the kernel */
625 try_port = 1024;
626 do {
627 local.sin_port = htons (--try_port);
628 ret = socket->ops->bind(socket, (struct sockaddr*)&local,
629 sizeof(local));
630 } while (ret && try_port > (1024 / 2));
631
632 if (ret) {
633 fput(file);
634 return 0;
635 }
636
637 server.sin_family = AF_INET;
638 server.sin_addr = addr->sin_addr;
639 server.sin_port = NFS_PORT;
640
641 /* Call sys_connect */
642 ret = socket->ops->connect (socket, (struct sockaddr *) &server,
643 sizeof (server), file->f_flags);
644 fput(file);
645 if (ret < 0)
646 return 0;
647 return 1;
648}
649
650/* XXXXXXXXXXXXXXXXXXXX */
651static int get_default (int value, int def_value)
652{
653 if (value)
654 return value;
655 else
656 return def_value;
657}
658
659/* XXXXXXXXXXXXXXXXXXXX */
660static int sunos_nfs_mount(char *dir_name, int linux_flags, void __user *data)
661{
662 int server_fd, err;
663 char *the_name, *mount_page;
664 struct nfs_mount_data linux_nfs_mount;
665 struct sunos_nfs_mount_args sunos_mount;
666
667 /* Ok, here comes the fun part: Linux's nfs mount needs a
668 * socket connection to the server, but SunOS mount does not
669 * require this, so we use the information on the destination
670 * address to create a socket and bind it to a reserved
671 * port on this system
672 */
673 if (copy_from_user(&sunos_mount, data, sizeof(sunos_mount)))
674 return -EFAULT;
675
676 server_fd = sys_socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
677 if (server_fd < 0)
678 return -ENXIO;
679
680 if (copy_from_user(&linux_nfs_mount.addr, sunos_mount.addr,
681 sizeof(*sunos_mount.addr)) ||
682 copy_from_user(&linux_nfs_mount.root, sunos_mount.fh,
683 sizeof(*sunos_mount.fh))) {
684 sys_close (server_fd);
685 return -EFAULT;
686 }
687
688 if (!sunos_nfs_get_server_fd (server_fd, &linux_nfs_mount.addr)){
689 sys_close (server_fd);
690 return -ENXIO;
691 }
692
693 /* Now, bind it to a locally reserved port */
694 linux_nfs_mount.version = NFS_MOUNT_VERSION;
695 linux_nfs_mount.flags = sunos_mount.flags;
696 linux_nfs_mount.fd = server_fd;
697
698 linux_nfs_mount.rsize = get_default (sunos_mount.rsize, 8192);
699 linux_nfs_mount.wsize = get_default (sunos_mount.wsize, 8192);
700 linux_nfs_mount.timeo = get_default (sunos_mount.timeo, 10);
701 linux_nfs_mount.retrans = sunos_mount.retrans;
702
703 linux_nfs_mount.acregmin = sunos_mount.acregmin;
704 linux_nfs_mount.acregmax = sunos_mount.acregmax;
705 linux_nfs_mount.acdirmin = sunos_mount.acdirmin;
706 linux_nfs_mount.acdirmax = sunos_mount.acdirmax;
707
708 the_name = getname(sunos_mount.hostname);
709 if (IS_ERR(the_name))
710 return PTR_ERR(the_name);
711
712 strlcpy(linux_nfs_mount.hostname, the_name,
713 sizeof(linux_nfs_mount.hostname));
714 putname (the_name);
715
716 mount_page = (char *) get_zeroed_page(GFP_KERNEL);
717 if (!mount_page)
718 return -ENOMEM;
719
720 memcpy(mount_page, &linux_nfs_mount, sizeof(linux_nfs_mount));
721
722 err = do_mount("", dir_name, "nfs", linux_flags, mount_page);
723
724 free_page((unsigned long) mount_page);
725 return err;
726}
727
728/* XXXXXXXXXXXXXXXXXXXX */
729asmlinkage int
730sunos_mount(char *type, char *dir, int flags, void *data)
731{
732 int linux_flags = 0;
733 int ret = -EINVAL;
734 char *dev_fname = 0;
735 char *dir_page, *type_page;
736
737 if (!capable (CAP_SYS_ADMIN))
738 return -EPERM;
739
740 /* We don't handle the integer fs type */
741 if ((flags & SMNT_NEWTYPE) == 0)
742 goto out;
743
744 /* Do not allow for those flags we don't support */
745 if (flags & (SMNT_GRPID|SMNT_NOSUB|SMNT_MULTI|SMNT_SYS5))
746 goto out;
747
748 if (flags & SMNT_REMOUNT)
749 linux_flags |= MS_REMOUNT;
750 if (flags & SMNT_RDONLY)
751 linux_flags |= MS_RDONLY;
752 if (flags & SMNT_NOSUID)
753 linux_flags |= MS_NOSUID;
754
755 dir_page = getname(dir);
756 ret = PTR_ERR(dir_page);
757 if (IS_ERR(dir_page))
758 goto out;
759
760 type_page = getname(type);
761 ret = PTR_ERR(type_page);
762 if (IS_ERR(type_page))
763 goto out1;
764
765 if (strcmp(type_page, "ext2") == 0) {
766 dev_fname = getname(data);
767 } else if (strcmp(type_page, "iso9660") == 0) {
768 dev_fname = getname(data);
769 } else if (strcmp(type_page, "minix") == 0) {
770 dev_fname = getname(data);
771 } else if (strcmp(type_page, "nfs") == 0) {
772 ret = sunos_nfs_mount (dir_page, flags, data);
773 goto out2;
774 } else if (strcmp(type_page, "ufs") == 0) {
775 printk("Warning: UFS filesystem mounts unsupported.\n");
776 ret = -ENODEV;
777 goto out2;
778 } else if (strcmp(type_page, "proc")) {
779 ret = -ENODEV;
780 goto out2;
781 }
782 ret = PTR_ERR(dev_fname);
783 if (IS_ERR(dev_fname))
784 goto out2;
785 lock_kernel();
786 ret = do_mount(dev_fname, dir_page, type_page, linux_flags, NULL);
787 unlock_kernel();
788 if (dev_fname)
789 putname(dev_fname);
790out2:
791 putname(type_page);
792out1:
793 putname(dir_page);
794out:
795 return ret;
796}
797#endif
798
799asmlinkage int sunos_setpgrp(pid_t pid, pid_t pgid)
800{
801 int ret;
802
803 /* So stupid... */
804 if ((!pid || pid == current->pid) &&
805 !pgid) {
806 sys_setsid();
807 ret = 0;
808 } else {
809 ret = sys_setpgid(pid, pgid);
810 }
811 return ret;
812}
813
814/* So stupid... */
815extern long compat_sys_wait4(compat_pid_t, compat_uint_t __user *, int,
816 struct compat_rusage __user *);
817
818asmlinkage int sunos_wait4(compat_pid_t pid, compat_uint_t __user *stat_addr, int options, struct compat_rusage __user *ru)
819{
820 int ret;
821
822 ret = compat_sys_wait4((pid ? pid : ((compat_pid_t)-1)),
823 stat_addr, options, ru);
824 return ret;
825}
826
1da177e4
LT		 827asmlinkage int sunos_killpg(int pgrp, int sig)
828{
0e25338b
EB		 829 int ret;
830
831 rcu_read_lock();
832 ret = -EINVAL;
833 if (pgrp > 0)
b488893a 834 ret = kill_pgrp(find_vpid(pgrp), sig, 0);
0e25338b
EB		 835 rcu_read_unlock();
836
837 return ret;
1da177e4
LT		 838}
839
840asmlinkage int sunos_audit(void)
841{
842 printk ("sys_audit\n");
843 return -1;
844}
845
846asmlinkage u32 sunos_gethostid(void)
847{
848 u32 ret;
849
850 ret = (((u32)idprom->id_machtype << 24) | ((u32)idprom->id_sernum));
851
852 return ret;
853}
854
855/* sysconf options, for SunOS compatibility */
856#define _SC_ARG_MAX 1
857#define _SC_CHILD_MAX 2
858#define _SC_CLK_TCK 3
859#define _SC_NGROUPS_MAX 4
860#define _SC_OPEN_MAX 5
861#define _SC_JOB_CONTROL 6
862#define _SC_SAVED_IDS 7
863#define _SC_VERSION 8
864
865asmlinkage s32 sunos_sysconf (int name)
866{
867 s32 ret;
868
869 switch (name){
870 case _SC_ARG_MAX:
871 ret = ARG_MAX;
872 break;
873 case _SC_CHILD_MAX:
1d51c69f 874 ret = current->signal->rlim[RLIMIT_NPROC].rlim_cur;
1da177e4
LT		 875 break;
876 case _SC_CLK_TCK:
877 ret = HZ;
878 break;
879 case _SC_NGROUPS_MAX:
880 ret = NGROUPS_MAX;
881 break;
882 case _SC_OPEN_MAX:
1d51c69f 883 ret = current->signal->rlim[RLIMIT_NOFILE].rlim_cur;
1da177e4
LT		 884 break;
885 case _SC_JOB_CONTROL:
886 ret = 1; /* yes, we do support job control */
887 break;
888 case _SC_SAVED_IDS:
889 ret = 1; /* yes, we do support saved uids */
890 break;
891 case _SC_VERSION:
892 /* mhm, POSIX_VERSION is in /usr/include/unistd.h
893 * should it go on /usr/include/linux?
894 */
895 ret = 199009;
896 break;
897 default:
898 ret = -1;
899 break;
900 };
901 return ret;
902}
903
904asmlinkage int sunos_semsys(int op, u32 arg1, u32 arg2, u32 arg3, void __user *ptr)
905{
906 union semun arg4;
907 int ret;
908
909 switch (op) {
910 case 0:
911 /* Most arguments match on a 1:1 basis but cmd doesn't */
912 switch(arg3) {
913 case 4:
914 arg3=GETPID; break;
915 case 5:
916 arg3=GETVAL; break;
917 case 6:
918 arg3=GETALL; break;
919 case 3:
920 arg3=GETNCNT; break;
921 case 7:
922 arg3=GETZCNT; break;
923 case 8:
924 arg3=SETVAL; break;
925 case 9:
926 arg3=SETALL; break;
927 }
928 /* sys_semctl(): */
929 /* value to modify semaphore to */
930 arg4.__pad = ptr;
931 ret = sys_semctl((int)arg1, (int)arg2, (int)arg3, arg4);
932 break;
933 case 1:
934 /* sys_semget(): */
935 ret = sys_semget((key_t)arg1, (int)arg2, (int)arg3);
936 break;
937 case 2:
938 /* sys_semop(): */
939 ret = sys_semop((int)arg1, (struct sembuf __user *)(unsigned long)arg2,
940 (unsigned int) arg3);
941 break;
942 default:
943 ret = -EINVAL;
944 break;
945 };
946 return ret;
947}
948
949struct msgbuf32 {
950 s32 mtype;
951 char mtext[1];
952};
953
954struct ipc_perm32
955{
956 key_t key;
957 compat_uid_t uid;
958 compat_gid_t gid;
959 compat_uid_t cuid;
960 compat_gid_t cgid;
961 compat_mode_t mode;
962 unsigned short seq;
963};
964
965struct msqid_ds32
966{
967 struct ipc_perm32 msg_perm;
968 u32 msg_first;
969 u32 msg_last;
970 compat_time_t msg_stime;
971 compat_time_t msg_rtime;
972 compat_time_t msg_ctime;
973 u32 wwait;
974 u32 rwait;
975 unsigned short msg_cbytes;
976 unsigned short msg_qnum;
977 unsigned short msg_qbytes;
978 compat_ipc_pid_t msg_lspid;
979 compat_ipc_pid_t msg_lrpid;
980};
981
982static inline int sunos_msqid_get(struct msqid_ds32 __user *user,
983 struct msqid_ds *kern)
984{
985 if (get_user(kern->msg_perm.key, &user->msg_perm.key) ||
986 __get_user(kern->msg_perm.uid, &user->msg_perm.uid) ||
987 __get_user(kern->msg_perm.gid, &user->msg_perm.gid) ||
988 __get_user(kern->msg_perm.cuid, &user->msg_perm.cuid) ||
989 __get_user(kern->msg_perm.cgid, &user->msg_perm.cgid) ||
990 __get_user(kern->msg_stime, &user->msg_stime) ||
991 __get_user(kern->msg_rtime, &user->msg_rtime) ||
992 __get_user(kern->msg_ctime, &user->msg_ctime) ||
993 __get_user(kern->msg_ctime, &user->msg_cbytes) ||
994 __get_user(kern->msg_ctime, &user->msg_qnum) ||
995 __get_user(kern->msg_ctime, &user->msg_qbytes) ||
996 __get_user(kern->msg_ctime, &user->msg_lspid) ||
997 __get_user(kern->msg_ctime, &user->msg_lrpid))
998 return -EFAULT;
999 return 0;
1000}
1001
1002static inline int sunos_msqid_put(struct msqid_ds32 __user *user,
1003 struct msqid_ds *kern)
1004{
1005 if (put_user(kern->msg_perm.key, &user->msg_perm.key) ||
1006 __put_user(kern->msg_perm.uid, &user->msg_perm.uid) ||
1007 __put_user(kern->msg_perm.gid, &user->msg_perm.gid) ||
1008 __put_user(kern->msg_perm.cuid, &user->msg_perm.cuid) ||
1009 __put_user(kern->msg_perm.cgid, &user->msg_perm.cgid) ||
1010 __put_user(kern->msg_stime, &user->msg_stime) ||
1011 __put_user(kern->msg_rtime, &user->msg_rtime) ||
1012 __put_user(kern->msg_ctime, &user->msg_ctime) ||
1013 __put_user(kern->msg_ctime, &user->msg_cbytes) ||
1014 __put_user(kern->msg_ctime, &user->msg_qnum) ||
1015 __put_user(kern->msg_ctime, &user->msg_qbytes) ||
1016 __put_user(kern->msg_ctime, &user->msg_lspid) ||
1017 __put_user(kern->msg_ctime, &user->msg_lrpid))
1018 return -EFAULT;
1019 return 0;
1020}
1021
1022static inline int sunos_msgbuf_get(struct msgbuf32 __user *user, struct msgbuf *kern, int len)
1023{
1024 if (get_user(kern->mtype, &user->mtype) ||
1025 __copy_from_user(kern->mtext, &user->mtext, len))
1026 return -EFAULT;
1027 return 0;
1028}
1029
1030static inline int sunos_msgbuf_put(struct msgbuf32 __user *user, struct msgbuf *kern, int len)
1031{
1032 if (put_user(kern->mtype, &user->mtype) ||
1033 __copy_to_user(user->mtext, kern->mtext, len))
1034 return -EFAULT;
1035 return 0;
1036}
1037
1038asmlinkage int sunos_msgsys(int op, u32 arg1, u32 arg2, u32 arg3, u32 arg4)
1039{
1040 struct sparc_stackf32 __user *sp;
1041 struct msqid_ds kds;
1042 struct msgbuf *kmbuf;
1043 mm_segment_t old_fs = get_fs();
1044 u32 arg5;
1045 int rval;
1046
1047 switch(op) {
1048 case 0:
1049 rval = sys_msgget((key_t)arg1, (int)arg2);
1050 break;
1051 case 1:
1052 if (!sunos_msqid_get((struct msqid_ds32 __user *)(unsigned long)arg3, &kds)) {
1053 set_fs(KERNEL_DS);
1054 rval = sys_msgctl((int)arg1, (int)arg2,
1055 (struct msqid_ds __user *)(unsigned long)arg3);
1056 set_fs(old_fs);
1057 if (!rval)
1058 rval = sunos_msqid_put((struct msqid_ds32 __user *)(unsigned long)arg3,
1059 &kds);
1060 } else
1061 rval = -EFAULT;
1062 break;
1063 case 2:
1064 rval = -EFAULT;
5cbded58 1065 kmbuf = kmalloc(sizeof(struct msgbuf) + arg3,
1da177e4
LT		 1066 GFP_KERNEL);
1067 if (!kmbuf)
1068 break;
1069 sp = (struct sparc_stackf32 __user *)
1070 (current_thread_info()->kregs->u_regs[UREG_FP] & 0xffffffffUL);
1071 if (get_user(arg5, &sp->xxargs[0])) {
1072 rval = -EFAULT;
1073 kfree(kmbuf);
1074 break;
1075 }
1076 set_fs(KERNEL_DS);
1077 rval = sys_msgrcv((int)arg1, (struct msgbuf __user *) kmbuf,
1078 (size_t)arg3,
1079 (long)arg4, (int)arg5);
1080 set_fs(old_fs);
1081 if (!rval)
1082 rval = sunos_msgbuf_put((struct msgbuf32 __user *)(unsigned long)arg2,
1083 kmbuf, arg3);
1084 kfree(kmbuf);
1085 break;
1086 case 3:
1087 rval = -EFAULT;
5cbded58 1088 kmbuf = kmalloc(sizeof(struct msgbuf) + arg3,
1da177e4
LT		 1089 GFP_KERNEL);
1090 if (!kmbuf || sunos_msgbuf_get((struct msgbuf32 __user *)(unsigned long)arg2,
1091 kmbuf, arg3))
1092 break;
1093 set_fs(KERNEL_DS);
1094 rval = sys_msgsnd((int)arg1, (struct msgbuf __user *) kmbuf,
1095 (size_t)arg3, (int)arg4);
1096 set_fs(old_fs);
1097 kfree(kmbuf);
1098 break;
1099 default:
1100 rval = -EINVAL;
1101 break;
1102 }
1103 return rval;
1104}
1105
1106struct shmid_ds32 {
1107 struct ipc_perm32 shm_perm;
1108 int shm_segsz;
1109 compat_time_t shm_atime;
1110 compat_time_t shm_dtime;
1111 compat_time_t shm_ctime;
1112 compat_ipc_pid_t shm_cpid;
1113 compat_ipc_pid_t shm_lpid;
1114 unsigned short shm_nattch;
1115};
1116
1117static inline int sunos_shmid_get(struct shmid_ds32 __user *user,
1118 struct shmid_ds *kern)
1119{
1120 if (get_user(kern->shm_perm.key, &user->shm_perm.key) ||
1121 __get_user(kern->shm_perm.uid, &user->shm_perm.uid) ||
1122 __get_user(kern->shm_perm.gid, &user->shm_perm.gid) ||
1123 __get_user(kern->shm_perm.cuid, &user->shm_perm.cuid) ||
1124 __get_user(kern->shm_perm.cgid, &user->shm_perm.cgid) ||
1125 __get_user(kern->shm_segsz, &user->shm_segsz) ||
1126 __get_user(kern->shm_atime, &user->shm_atime) ||
1127 __get_user(kern->shm_dtime, &user->shm_dtime) ||
1128 __get_user(kern->shm_ctime, &user->shm_ctime) ||
1129 __get_user(kern->shm_cpid, &user->shm_cpid) ||
1130 __get_user(kern->shm_lpid, &user->shm_lpid) ||
1131 __get_user(kern->shm_nattch, &user->shm_nattch))
1132 return -EFAULT;
1133 return 0;
1134}
1135
1136static inline int sunos_shmid_put(struct shmid_ds32 __user *user,
1137 struct shmid_ds *kern)
1138{
1139 if (put_user(kern->shm_perm.key, &user->shm_perm.key) ||
1140 __put_user(kern->shm_perm.uid, &user->shm_perm.uid) ||
1141 __put_user(kern->shm_perm.gid, &user->shm_perm.gid) ||
1142 __put_user(kern->shm_perm.cuid, &user->shm_perm.cuid) ||
1143 __put_user(kern->shm_perm.cgid, &user->shm_perm.cgid) ||
1144 __put_user(kern->shm_segsz, &user->shm_segsz) ||
1145 __put_user(kern->shm_atime, &user->shm_atime) ||
1146 __put_user(kern->shm_dtime, &user->shm_dtime) ||
1147 __put_user(kern->shm_ctime, &user->shm_ctime) ||
1148 __put_user(kern->shm_cpid, &user->shm_cpid) ||
1149 __put_user(kern->shm_lpid, &user->shm_lpid) ||
1150 __put_user(kern->shm_nattch, &user->shm_nattch))
1151 return -EFAULT;
1152 return 0;
1153}
1154
1155asmlinkage int sunos_shmsys(int op, u32 arg1, u32 arg2, u32 arg3)
1156{
1157 struct shmid_ds ksds;
1158 unsigned long raddr;
1159 mm_segment_t old_fs = get_fs();
1160 int rval;
1161
1162 switch(op) {
1163 case 0:
1164 /* do_shmat(): attach a shared memory area */
1165 rval = do_shmat((int)arg1,(char __user *)(unsigned long)arg2,(int)arg3,&raddr);
1166 if (!rval)
1167 rval = (int) raddr;
1168 break;
1169 case 1:
1170 /* sys_shmctl(): modify shared memory area attr. */
1171 if (!sunos_shmid_get((struct shmid_ds32 __user *)(unsigned long)arg3, &ksds)) {
1172 set_fs(KERNEL_DS);
1173 rval = sys_shmctl((int) arg1,(int) arg2,
1174 (struct shmid_ds __user *) &ksds);
1175 set_fs(old_fs);
1176 if (!rval)
1177 rval = sunos_shmid_put((struct shmid_ds32 __user *)(unsigned long)arg3,
1178 &ksds);
1179 } else
1180 rval = -EFAULT;
1181 break;
1182 case 2:
1183 /* sys_shmdt(): detach a shared memory area */
1184 rval = sys_shmdt((char __user *)(unsigned long)arg1);
1185 break;
1186 case 3:
1187 /* sys_shmget(): get a shared memory area */
1188 rval = sys_shmget((key_t)arg1,(int)arg2,(int)arg3);
1189 break;
1190 default:
1191 rval = -EINVAL;
1192 break;
1193 };
1194 return rval;
1195}
1196
1197extern asmlinkage long sparc32_open(const char __user * filename, int flags, int mode);
1198
1199asmlinkage int sunos_open(u32 fname, int flags, int mode)
1200{
1201 const char __user *filename = compat_ptr(fname);
1202
1203 return sparc32_open(filename, flags, mode);
1204}
1205
1206#define SUNOS_EWOULDBLOCK 35
1207
1208/* see the sunos man page read(2v) for an explanation
1209 of this garbage. We use O_NDELAY to mark
1210 file descriptors that have been set non-blocking
1211 using 4.2BSD style calls. (tridge) */
1212
1213static inline int check_nonblock(int ret, int fd)
1214{
1215 if (ret == -EAGAIN) {
1216 struct file * file = fget(fd);
1217 if (file) {
1218 if (file->f_flags & O_NDELAY)
1219 ret = -SUNOS_EWOULDBLOCK;
1220 fput(file);
1221 }
1222 }
1223 return ret;
1224}
1225
1226asmlinkage int sunos_read(unsigned int fd, char __user *buf, u32 count)
1227{
1228 int ret;
1229
1230 ret = check_nonblock(sys_read(fd, buf, count), fd);
1231 return ret;
1232}
1233
1234asmlinkage int sunos_readv(u32 fd, void __user *vector, s32 count)
1235{
1236 int ret;
1237
1238 ret = check_nonblock(compat_sys_readv(fd, vector, count), fd);
1239 return ret;
1240}
1241
1242asmlinkage int sunos_write(unsigned int fd, char __user *buf, u32 count)
1243{
1244 int ret;
1245
1246 ret = check_nonblock(sys_write(fd, buf, count), fd);
1247 return ret;
1248}
1249
1250asmlinkage int sunos_writev(u32 fd, void __user *vector, s32 count)
1251{
1252 int ret;
1253
1254 ret = check_nonblock(compat_sys_writev(fd, vector, count), fd);
1255 return ret;
1256}
1257
1258asmlinkage int sunos_recv(u32 __fd, void __user *ubuf, int size, unsigned flags)
1259{
1260 int ret, fd = (int) __fd;
1261
1262 ret = check_nonblock(sys_recv(fd, ubuf, size, flags), fd);
1263 return ret;
1264}
1265
1266asmlinkage int sunos_send(u32 __fd, void __user *buff, int len, unsigned flags)
1267{
1268 int ret, fd = (int) __fd;
1269
1270 ret = check_nonblock(sys_send(fd, buff, len, flags), fd);
1271 return ret;
1272}
1273
1274asmlinkage int sunos_accept(u32 __fd, struct sockaddr __user *sa, int __user *addrlen)
1275{
1276 int ret, fd = (int) __fd;
1277
1278 while (1) {
1279 ret = check_nonblock(sys_accept(fd, sa, addrlen), fd);
1280 if (ret != -ENETUNREACH && ret != -EHOSTUNREACH)
1281 break;
1282 }
1283 return ret;
1284}
1285
1286#define SUNOS_SV_INTERRUPT 2
1287
1288asmlinkage int sunos_sigaction (int sig,
1289 struct old_sigaction32 __user *act,
1290 struct old_sigaction32 __user *oact)
1291{
1292 struct k_sigaction new_ka, old_ka;
1293 int ret;
1294
1295 if (act) {
1296 compat_old_sigset_t mask;
1297 u32 u_handler;
1298
1299 if (get_user(u_handler, &act->sa_handler) ||
1300 __get_user(new_ka.sa.sa_flags, &act->sa_flags))
1301 return -EFAULT;
1302 new_ka.sa.sa_handler = compat_ptr(u_handler);
1303 __get_user(mask, &act->sa_mask);
1304 new_ka.sa.sa_restorer = NULL;
1305 new_ka.ka_restorer = NULL;
1306 siginitset(&new_ka.sa.sa_mask, mask);
1307 new_ka.sa.sa_flags ^= SUNOS_SV_INTERRUPT;
1308 }
1309
1310 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
1311
1312 if (!ret && oact) {
1313 old_ka.sa.sa_flags ^= SUNOS_SV_INTERRUPT;
1314 if (put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler) ||
1315 __put_user(old_ka.sa.sa_flags, &oact->sa_flags))
1316 return -EFAULT;
1317 __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
1318 }
1319
1320 return ret;
1321}
1322
1323asmlinkage int sunos_setsockopt(u32 __fd, u32 __level, u32 __optname,
1324 char __user *optval, u32 __optlen)
1325{
1326 int fd = (int) __fd;
1327 int level = (int) __level;
1328 int optname = (int) __optname;
1329 int optlen = (int) __optlen;
1330 int tr_opt = optname;
1331 int ret;
1332
1333 if (level == SOL_IP) {
1334 /* Multicast socketopts (ttl, membership) */
1335 if (tr_opt >=2 && tr_opt <= 6)
1336 tr_opt += 30;
1337 }
1338 ret = sys_setsockopt(fd, level, tr_opt,
1339 optval, optlen);
1340 return ret;
1341}
1342
1343asmlinkage int sunos_getsockopt(u32 __fd, u32 __level, u32 __optname,
1344 char __user *optval, int __user *optlen)
1345{
1346 int fd = (int) __fd;
1347 int level = (int) __level;
1348 int optname = (int) __optname;
1349 int tr_opt = optname;
1350 int ret;
1351
1352 if (level == SOL_IP) {
1353 /* Multicast socketopts (ttl, membership) */
1354 if (tr_opt >=2 && tr_opt <= 6)
1355 tr_opt += 30;
1356 }
1357 ret = compat_sys_getsockopt(fd, level, tr_opt,
1358 optval, optlen);
1359 return ret;
1360}
Linux 6.x block layer and io_uring tree(s)