1 /* $Id: sys_sunos.c,v 1.137 2002/02/08 03:57:14 davem Exp $
2 * sys_sunos.c: SunOS specific syscall compatibility support.
4 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (C) 1995 Miguel de Icaza (miguel@nuclecu.unam.mx)
7 * Based upon preliminary work which is:
9 * Copyright (C) 1995 Adrian M. Rodriguez (adrian@remus.rutgers.edu)
13 #include <linux/kernel.h>
14 #include <linux/sched.h>
15 #include <linux/types.h>
16 #include <linux/mman.h>
18 #include <linux/swap.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/capability.h>
34 #include <linux/errno.h>
35 #include <linux/smp.h>
36 #include <linux/smp_lock.h>
37 #include <linux/syscalls.h>
41 #include <asm/uaccess.h>
43 #include <linux/segment.h>
47 #include <asm/pgtable.h>
48 #include <asm/pconf.h>
49 #include <asm/idprom.h> /* for gethostid() */
50 #include <asm/unistd.h>
51 #include <asm/system.h>
53 /* For the nfs mount emulation */
54 #include <linux/socket.h>
56 #include <linux/nfs.h>
57 #include <linux/nfs2.h>
58 #include <linux/nfs_mount.h>
60 /* for sunos_select */
61 #include <linux/time.h>
62 #include <linux/personality.h>
64 /* NR_OPEN is now larger and dynamic in recent kernels. */
65 #define SUNOS_NR_OPEN 256
67 /* We use the SunOS mmap() semantics. */
68 asmlinkage unsigned long sunos_mmap(unsigned long addr, unsigned long len,
69 unsigned long prot, unsigned long flags,
70 unsigned long fd, unsigned long off)
72 struct file * file = NULL;
73 unsigned long retval, ret_type;
75 if (flags & MAP_NORESERVE) {
78 printk("%s: unimplemented SunOS MAP_NORESERVE mmap() flag\n",
80 flags &= ~MAP_NORESERVE;
83 if (!(flags & MAP_ANONYMOUS)) {
84 if (fd >= SUNOS_NR_OPEN)
92 /* If this is ld.so or a shared library doing an mmap
93 * of /dev/zero, transform it into an anonymous mapping.
94 * SunOS is so stupid some times... hmph!
97 if (imajor(file->f_dentry->d_inode) == MEM_MAJOR &&
98 iminor(file->f_dentry->d_inode) == 5) {
99 flags |= MAP_ANONYMOUS;
104 ret_type = flags & _MAP_NEW;
107 if (!(flags & MAP_FIXED))
110 if (ARCH_SUN4C_SUN4 &&
112 ((flags & MAP_FIXED) &&
113 addr < 0xe0000000 && addr + len > 0x20000000)))
116 /* See asm-sparc/uaccess.h */
117 if (len > TASK_SIZE - PAGE_SIZE ||
118 addr + len > TASK_SIZE - PAGE_SIZE)
122 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
123 down_write(¤t->mm->mmap_sem);
124 retval = do_mmap(file, addr, len, prot, flags, off);
125 up_write(¤t->mm->mmap_sem);
127 retval = ((retval < PAGE_OFFSET) ? 0 : retval);
136 /* lmbench calls this, just say "yeah, ok" */
137 asmlinkage int sunos_mctl(unsigned long addr, unsigned long len, int function, char *arg)
142 /* SunOS is completely broken... it returns 0 on success, otherwise
143 * ENOMEM. For sys_sbrk() it wants the old brk value as a return
144 * on success and ENOMEM as before on failure.
146 asmlinkage int sunos_brk(unsigned long brk)
148 int freepages, retval = -ENOMEM;
150 unsigned long newbrk, oldbrk;
152 down_write(¤t->mm->mmap_sem);
153 if (ARCH_SUN4C_SUN4) {
154 if (brk >= 0x20000000 && brk < 0xe0000000) {
159 if (brk < current->mm->end_code)
162 newbrk = PAGE_ALIGN(brk);
163 oldbrk = PAGE_ALIGN(current->mm->brk);
165 if (oldbrk == newbrk) {
166 current->mm->brk = brk;
171 * Always allow shrinking brk
173 if (brk <= current->mm->brk) {
174 current->mm->brk = brk;
175 do_munmap(current->mm, newbrk, oldbrk-newbrk);
179 * Check against rlimit and stack..
182 rlim = current->signal->rlim[RLIMIT_DATA].rlim_cur;
183 if (rlim >= RLIM_INFINITY)
185 if (brk - current->mm->end_code > rlim)
189 * Check against existing mmap mappings.
191 if (find_vma_intersection(current->mm, oldbrk, newbrk+PAGE_SIZE))
195 * stupid algorithm to decide if we have enough memory: while
196 * simple, it hopefully works in most obvious cases.. Easy to
197 * fool it, but this should catch most mistakes.
199 freepages = global_page_state(NR_FILE_PAGES);
201 freepages += nr_free_pages();
202 freepages += nr_swap_pages;
203 freepages -= num_physpages >> 4;
204 freepages -= (newbrk-oldbrk) >> PAGE_SHIFT;
208 * Ok, we have probably got enough memory - let it rip.
210 current->mm->brk = brk;
211 do_brk(oldbrk, newbrk-oldbrk);
214 up_write(¤t->mm->mmap_sem);
218 asmlinkage unsigned long sunos_sbrk(int increment)
221 unsigned long oldbrk;
223 /* This should do it hopefully... */
225 oldbrk = current->mm->brk;
226 error = sunos_brk(((int) current->mm->brk) + increment);
233 /* XXX Completely undocumented, and completely magic...
234 * XXX I believe it is to increase the size of the stack by
235 * XXX argument 'increment' and return the new end of stack
238 asmlinkage unsigned long sunos_sstk(int increment)
241 printk("%s: Call to sunos_sstk(increment<%d>) is unsupported\n",
242 current->comm, increment);
247 /* Give hints to the kernel as to what paging strategy to use...
248 * Completely bogus, don't remind me.
250 #define VA_NORMAL 0 /* Normal vm usage expected */
251 #define VA_ABNORMAL 1 /* Abnormal/random vm usage probable */
252 #define VA_SEQUENTIAL 2 /* Accesses will be of a sequential nature */
253 #define VA_INVALIDATE 3 /* Page table entries should be flushed ??? */
254 static char *vstrings[] = {
261 asmlinkage void sunos_vadvise(unsigned long strategy)
263 /* I wanna see who uses this... */
265 printk("%s: Advises us to use %s paging strategy\n",
267 strategy <= 3 ? vstrings[strategy] : "BOGUS");
271 /* This just wants the soft limit (ie. rlim_cur element) of the RLIMIT_NOFILE
272 * resource limit and is for backwards compatibility with older sunos
275 asmlinkage long sunos_getdtablesize(void)
277 return SUNOS_NR_OPEN;
280 #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
282 asmlinkage unsigned long sunos_sigblock(unsigned long blk_mask)
286 spin_lock_irq(¤t->sighand->siglock);
287 old = current->blocked.sig[0];
288 current->blocked.sig[0] |= (blk_mask & _BLOCKABLE);
290 spin_unlock_irq(¤t->sighand->siglock);
294 asmlinkage unsigned long sunos_sigsetmask(unsigned long newmask)
296 unsigned long retval;
298 spin_lock_irq(¤t->sighand->siglock);
299 retval = current->blocked.sig[0];
300 current->blocked.sig[0] = (newmask & _BLOCKABLE);
302 spin_unlock_irq(¤t->sighand->siglock);
306 /* SunOS getdents is very similar to the newer Linux (iBCS2 compliant) */
307 /* getdents system call, the format of the structure just has a different */
308 /* layout (d_off+d_ino instead of d_ino+d_off) */
309 struct sunos_dirent {
312 unsigned short d_reclen;
313 unsigned short d_namlen;
317 struct sunos_dirent_callback {
318 struct sunos_dirent __user *curr;
319 struct sunos_dirent __user *previous;
324 #define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de)))
325 #define ROUND_UP(x) (((x)+sizeof(long)-1) & ~(sizeof(long)-1))
327 static int sunos_filldir(void * __buf, const char * name, int namlen,
328 loff_t offset, ino_t ino, unsigned int d_type)
330 struct sunos_dirent __user *dirent;
331 struct sunos_dirent_callback * buf = __buf;
332 int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1);
334 buf->error = -EINVAL; /* only used if we fail.. */
335 if (reclen > buf->count)
337 dirent = buf->previous;
339 put_user(offset, &dirent->d_off);
341 buf->previous = dirent;
342 put_user(ino, &dirent->d_ino);
343 put_user(namlen, &dirent->d_namlen);
344 put_user(reclen, &dirent->d_reclen);
345 copy_to_user(dirent->d_name, name, namlen);
346 put_user(0, dirent->d_name + namlen);
347 dirent = (void __user *) dirent + reclen;
349 buf->count -= reclen;
353 asmlinkage int sunos_getdents(unsigned int fd, void __user *dirent, int cnt)
356 struct sunos_dirent __user *lastdirent;
357 struct sunos_dirent_callback buf;
360 if (fd >= SUNOS_NR_OPEN)
368 if (cnt < (sizeof(struct sunos_dirent) + 255))
371 buf.curr = (struct sunos_dirent __user *) dirent;
376 error = vfs_readdir(file, sunos_filldir, &buf);
380 lastdirent = buf.previous;
383 put_user(file->f_pos, &lastdirent->d_off);
384 error = cnt - buf.count;
393 /* Old sunos getdirentries, severely broken compatibility stuff here. */
394 struct sunos_direntry {
396 unsigned short d_reclen;
397 unsigned short d_namlen;
401 struct sunos_direntry_callback {
402 struct sunos_direntry __user *curr;
403 struct sunos_direntry __user *previous;
408 static int sunos_filldirentry(void * __buf, const char * name, int namlen,
409 loff_t offset, ino_t ino, unsigned int d_type)
411 struct sunos_direntry __user *dirent;
412 struct sunos_direntry_callback *buf = __buf;
413 int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1);
415 buf->error = -EINVAL; /* only used if we fail.. */
416 if (reclen > buf->count)
418 dirent = buf->previous;
420 buf->previous = dirent;
421 put_user(ino, &dirent->d_ino);
422 put_user(namlen, &dirent->d_namlen);
423 put_user(reclen, &dirent->d_reclen);
424 copy_to_user(dirent->d_name, name, namlen);
425 put_user(0, dirent->d_name + namlen);
426 dirent = (void __user *) dirent + reclen;
428 buf->count -= reclen;
432 asmlinkage int sunos_getdirentries(unsigned int fd, void __user *dirent,
433 int cnt, unsigned int __user *basep)
436 struct sunos_direntry __user *lastdirent;
437 struct sunos_direntry_callback buf;
440 if (fd >= SUNOS_NR_OPEN)
448 if (cnt < (sizeof(struct sunos_direntry) + 255))
451 buf.curr = (struct sunos_direntry __user *) dirent;
456 error = vfs_readdir(file, sunos_filldirentry, &buf);
460 lastdirent = buf.previous;
463 put_user(file->f_pos, basep);
464 error = cnt - buf.count;
473 struct sunos_utsname {
482 asmlinkage int sunos_uname(struct sunos_utsname __user *name)
486 ret = copy_to_user(&name->sname[0], &utsname()->sysname[0],
487 sizeof(name->sname) - 1);
489 ret |= __copy_to_user(&name->nname[0], &utsname()->nodename[0],
490 sizeof(name->nname) - 1);
491 ret |= __put_user('\0', &name->nname[8]);
492 ret |= __copy_to_user(&name->rel[0], &utsname()->release[0],
493 sizeof(name->rel) - 1);
494 ret |= __copy_to_user(&name->ver[0], &utsname()->version[0],
495 sizeof(name->ver) - 1);
496 ret |= __copy_to_user(&name->mach[0], &utsname()->machine[0],
497 sizeof(name->mach) - 1);
500 return ret ? -EFAULT : 0;
503 asmlinkage int sunos_nosys(void)
505 struct pt_regs *regs;
510 regs = current->thread.kregs;
511 info.si_signo = SIGSYS;
513 info.si_code = __SI_FAULT|0x100;
514 info.si_addr = (void __user *)regs->pc;
515 info.si_trapno = regs->u_regs[UREG_G1];
516 send_sig_info(SIGSYS, &info, current);
518 printk("Process makes ni_syscall number %d, register dump:\n",
519 (int) regs->u_regs[UREG_G1]);
526 /* This is not a real and complete implementation yet, just to keep
527 * the easy SunOS binaries happy.
529 asmlinkage int sunos_fpathconf(int fd, int name)
552 case _PCONF_CHRESTRICT: /* XXX Investigate XXX */
555 case _PCONF_NOTRUNC: /* XXX Investigate XXX */
556 case _PCONF_VDISABLE:
566 asmlinkage int sunos_pathconf(char __user *path, int name)
570 ret = sunos_fpathconf(0, name); /* XXX cheese XXX */
574 /* SunOS mount system call emulation */
576 asmlinkage int sunos_select(int width, fd_set __user *inp, fd_set __user *outp,
577 fd_set __user *exp, struct timeval __user *tvp)
581 /* SunOS binaries expect that select won't change the tvp contents */
582 ret = sys_select (width, inp, outp, exp, tvp);
583 if (ret == -EINTR && tvp) {
586 __get_user(sec, &tvp->tv_sec);
587 __get_user(usec, &tvp->tv_usec);
589 if (sec == 0 && usec == 0)
595 asmlinkage void sunos_nop(void)
600 /* SunOS mount/umount. */
601 #define SMNT_RDONLY 1
602 #define SMNT_NOSUID 2
603 #define SMNT_NEWTYPE 4
605 #define SMNT_REMOUNT 16
606 #define SMNT_NOSUB 32
607 #define SMNT_MULTI 64
608 #define SMNT_SYS5 128
611 char fh_data [NFS_FHSIZE];
614 struct sunos_nfs_mount_args {
615 struct sockaddr_in __user *addr; /* file server address */
616 struct nfs_fh __user *fh; /* File handle to be mounted */
617 int flags; /* flags */
618 int wsize; /* write size in bytes */
619 int rsize; /* read size in bytes */
620 int timeo; /* initial timeout in .1 secs */
621 int retrans; /* times to retry send */
622 char __user *hostname; /* server's hostname */
623 int acregmin; /* attr cache file min secs */
624 int acregmax; /* attr cache file max secs */
625 int acdirmin; /* attr cache dir min secs */
626 int acdirmax; /* attr cache dir max secs */
627 char __user *netname; /* server's netname */
631 /* Bind the socket on a local reserved port and connect it to the
632 * remote server. This on Linux/i386 is done by the mount program,
636 sunos_nfs_get_server_fd (int fd, struct sockaddr_in *addr)
638 struct sockaddr_in local;
639 struct sockaddr_in server;
641 struct socket *socket;
650 inode = file->f_dentry->d_inode;
652 socket = SOCKET_I(inode);
653 local.sin_family = AF_INET;
654 local.sin_addr.s_addr = INADDR_ANY;
656 /* IPPORT_RESERVED = 1024, can't find the definition in the kernel */
659 local.sin_port = htons (--try_port);
660 ret = socket->ops->bind(socket, (struct sockaddr*)&local,
662 } while (ret && try_port > (1024 / 2));
667 server.sin_family = AF_INET;
668 server.sin_addr = addr->sin_addr;
669 server.sin_port = NFS_PORT;
671 /* Call sys_connect */
672 ret = socket->ops->connect (socket, (struct sockaddr *) &server,
673 sizeof (server), file->f_flags);
683 static int get_default (int value, int def_value)
691 static int sunos_nfs_mount(char *dir_name, int linux_flags, void __user *data)
694 char *the_name, *mount_page;
695 struct nfs_mount_data linux_nfs_mount;
696 struct sunos_nfs_mount_args sunos_mount;
698 /* Ok, here comes the fun part: Linux's nfs mount needs a
699 * socket connection to the server, but SunOS mount does not
700 * require this, so we use the information on the destination
701 * address to create a socket and bind it to a reserved
702 * port on this system
704 if (copy_from_user(&sunos_mount, data, sizeof(sunos_mount)))
707 server_fd = sys_socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
711 if (copy_from_user(&linux_nfs_mount.addr,sunos_mount.addr,
712 sizeof(*sunos_mount.addr)) ||
713 copy_from_user(&linux_nfs_mount.root,sunos_mount.fh,
714 sizeof(*sunos_mount.fh))) {
715 sys_close (server_fd);
719 if (!sunos_nfs_get_server_fd (server_fd, &linux_nfs_mount.addr)){
720 sys_close (server_fd);
724 /* Now, bind it to a locally reserved port */
725 linux_nfs_mount.version = NFS_MOUNT_VERSION;
726 linux_nfs_mount.flags = sunos_mount.flags;
727 linux_nfs_mount.fd = server_fd;
729 linux_nfs_mount.rsize = get_default (sunos_mount.rsize, 8192);
730 linux_nfs_mount.wsize = get_default (sunos_mount.wsize, 8192);
731 linux_nfs_mount.timeo = get_default (sunos_mount.timeo, 10);
732 linux_nfs_mount.retrans = sunos_mount.retrans;
734 linux_nfs_mount.acregmin = sunos_mount.acregmin;
735 linux_nfs_mount.acregmax = sunos_mount.acregmax;
736 linux_nfs_mount.acdirmin = sunos_mount.acdirmin;
737 linux_nfs_mount.acdirmax = sunos_mount.acdirmax;
739 the_name = getname(sunos_mount.hostname);
740 if (IS_ERR(the_name))
741 return PTR_ERR(the_name);
743 strlcpy(linux_nfs_mount.hostname, the_name,
744 sizeof(linux_nfs_mount.hostname));
747 mount_page = (char *) get_zeroed_page(GFP_KERNEL);
751 memcpy(mount_page, &linux_nfs_mount, sizeof(linux_nfs_mount));
753 err = do_mount("", dir_name, "nfs", linux_flags, mount_page);
755 free_page((unsigned long) mount_page);
760 sunos_mount(char __user *type, char __user *dir, int flags, void __user *data)
764 char *dev_fname = NULL;
765 char *dir_page, *type_page;
767 if (!capable (CAP_SYS_ADMIN))
771 /* We don't handle the integer fs type */
772 if ((flags & SMNT_NEWTYPE) == 0)
775 /* Do not allow for those flags we don't support */
776 if (flags & (SMNT_GRPID|SMNT_NOSUB|SMNT_MULTI|SMNT_SYS5))
779 if (flags & SMNT_REMOUNT)
780 linux_flags |= MS_REMOUNT;
781 if (flags & SMNT_RDONLY)
782 linux_flags |= MS_RDONLY;
783 if (flags & SMNT_NOSUID)
784 linux_flags |= MS_NOSUID;
786 dir_page = getname(dir);
787 ret = PTR_ERR(dir_page);
788 if (IS_ERR(dir_page))
791 type_page = getname(type);
792 ret = PTR_ERR(type_page);
793 if (IS_ERR(type_page))
796 if (strcmp(type_page, "ext2") == 0) {
797 dev_fname = getname(data);
798 } else if (strcmp(type_page, "iso9660") == 0) {
799 dev_fname = getname(data);
800 } else if (strcmp(type_page, "minix") == 0) {
801 dev_fname = getname(data);
802 } else if (strcmp(type_page, "nfs") == 0) {
803 ret = sunos_nfs_mount (dir_page, flags, data);
805 } else if (strcmp(type_page, "ufs") == 0) {
806 printk("Warning: UFS filesystem mounts unsupported.\n");
809 } else if (strcmp(type_page, "proc")) {
813 ret = PTR_ERR(dev_fname);
814 if (IS_ERR(dev_fname))
816 ret = do_mount(dev_fname, dir_page, type_page, linux_flags, NULL);
829 asmlinkage int sunos_setpgrp(pid_t pid, pid_t pgid)
834 if ((!pid || pid == current->pid) &&
839 ret = sys_setpgid(pid, pgid);
845 asmlinkage int sunos_wait4(pid_t pid, unsigned int __user *stat_addr,
846 int options, struct rusage __user*ru)
850 ret = sys_wait4((pid ? pid : -1), stat_addr, options, ru);
854 extern int kill_pg(int, int, int);
855 asmlinkage int sunos_killpg(int pgrp, int sig)
860 ret = kill_pg(pgrp, sig, 0);
865 asmlinkage int sunos_audit(void)
868 printk ("sys_audit\n");
873 asmlinkage unsigned long sunos_gethostid(void)
878 ret = ((unsigned long)idprom->id_machtype << 24) |
879 (unsigned long)idprom->id_sernum;
884 /* sysconf options, for SunOS compatibility */
885 #define _SC_ARG_MAX 1
886 #define _SC_CHILD_MAX 2
887 #define _SC_CLK_TCK 3
888 #define _SC_NGROUPS_MAX 4
889 #define _SC_OPEN_MAX 5
890 #define _SC_JOB_CONTROL 6
891 #define _SC_SAVED_IDS 7
892 #define _SC_VERSION 8
894 asmlinkage long sunos_sysconf (int name)
903 ret = -1; /* no limit */
908 case _SC_NGROUPS_MAX:
914 case _SC_JOB_CONTROL:
915 ret = 1; /* yes, we do support job control */
918 ret = 1; /* yes, we do support saved uids */
921 /* mhm, POSIX_VERSION is in /usr/include/unistd.h
922 * should it go on /usr/include/linux?
933 asmlinkage int sunos_semsys(int op, unsigned long arg1, unsigned long arg2,
934 unsigned long arg3, void *ptr)
941 /* Most arguments match on a 1:1 basis but cmd doesn't */
959 /* value to modify semaphore to */
960 arg4.__pad = (void __user *) ptr;
961 ret = sys_semctl((int)arg1, (int)arg2, (int)arg3, arg4 );
965 ret = sys_semget((key_t)arg1, (int)arg2, (int)arg3);
969 ret = sys_semop((int)arg1, (struct sembuf __user *)arg2, (unsigned)arg3);
978 asmlinkage int sunos_msgsys(int op, unsigned long arg1, unsigned long arg2,
979 unsigned long arg3, unsigned long arg4)
981 struct sparc_stackf *sp;
987 rval = sys_msgget((key_t)arg1, (int)arg2);
990 rval = sys_msgctl((int)arg1, (int)arg2,
991 (struct msqid_ds __user *)arg3);
995 sp = (struct sparc_stackf *)current->thread.kregs->u_regs[UREG_FP];
996 arg5 = sp->xxargs[0];
998 rval = sys_msgrcv((int)arg1, (struct msgbuf __user *)arg2,
999 (size_t)arg3, (long)arg4, (int)arg5);
1002 rval = sys_msgsnd((int)arg1, (struct msgbuf __user *)arg2,
1003 (size_t)arg3, (int)arg4);
1012 asmlinkage int sunos_shmsys(int op, unsigned long arg1, unsigned long arg2,
1015 unsigned long raddr;
1020 /* do_shmat(): attach a shared memory area */
1021 rval = do_shmat((int)arg1,(char __user *)arg2,(int)arg3,&raddr);
1026 /* sys_shmctl(): modify shared memory area attr. */
1027 rval = sys_shmctl((int)arg1,(int)arg2,(struct shmid_ds __user *)arg3);
1030 /* sys_shmdt(): detach a shared memory area */
1031 rval = sys_shmdt((char __user *)arg1);
1034 /* sys_shmget(): get a shared memory area */
1035 rval = sys_shmget((key_t)arg1,(int)arg2,(int)arg3);
1044 #define SUNOS_EWOULDBLOCK 35
1046 /* see the sunos man page read(2v) for an explanation
1047 of this garbage. We use O_NDELAY to mark
1048 file descriptors that have been set non-blocking
1049 using 4.2BSD style calls. (tridge) */
1051 static inline int check_nonblock(int ret, int fd)
1053 if (ret == -EAGAIN) {
1054 struct file * file = fget(fd);
1056 if (file->f_flags & O_NDELAY)
1057 ret = -SUNOS_EWOULDBLOCK;
1064 asmlinkage int sunos_read(unsigned int fd, char __user *buf, int count)
1068 ret = check_nonblock(sys_read(fd,buf,count),fd);
1072 asmlinkage int sunos_readv(unsigned long fd, const struct iovec __user *vector,
1077 ret = check_nonblock(sys_readv(fd,vector,count),fd);
1081 asmlinkage int sunos_write(unsigned int fd, char __user *buf, int count)
1085 ret = check_nonblock(sys_write(fd,buf,count),fd);
1089 asmlinkage int sunos_writev(unsigned long fd,
1090 const struct iovec __user *vector, long count)
1094 ret = check_nonblock(sys_writev(fd,vector,count),fd);
1098 asmlinkage int sunos_recv(int fd, void __user *ubuf, int size, unsigned flags)
1102 ret = check_nonblock(sys_recv(fd,ubuf,size,flags),fd);
1106 asmlinkage int sunos_send(int fd, void __user *buff, int len, unsigned flags)
1110 ret = check_nonblock(sys_send(fd,buff,len,flags),fd);
1114 asmlinkage int sunos_accept(int fd, struct sockaddr __user *sa,
1115 int __user *addrlen)
1120 ret = check_nonblock(sys_accept(fd,sa,addrlen),fd);
1121 if (ret != -ENETUNREACH && ret != -EHOSTUNREACH)
1128 #define SUNOS_SV_INTERRUPT 2
1131 sunos_sigaction(int sig, const struct old_sigaction __user *act,
1132 struct old_sigaction __user *oact)
1134 struct k_sigaction new_ka, old_ka;
1140 if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
1141 __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
1142 __get_user(new_ka.sa.sa_flags, &act->sa_flags))
1144 __get_user(mask, &act->sa_mask);
1145 new_ka.sa.sa_restorer = NULL;
1146 new_ka.ka_restorer = NULL;
1147 siginitset(&new_ka.sa.sa_mask, mask);
1148 new_ka.sa.sa_flags ^= SUNOS_SV_INTERRUPT;
1151 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
1154 /* In the clone() case we could copy half consistent
1155 * state to the user, however this could sleep and
1156 * deadlock us if we held the signal lock on SMP. So for
1157 * now I take the easy way out and do no locking.
1158 * But then again we don't support SunOS lwp's anyways ;-)
1160 old_ka.sa.sa_flags ^= SUNOS_SV_INTERRUPT;
1161 if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
1162 __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
1163 __put_user(old_ka.sa.sa_flags, &oact->sa_flags))
1165 __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
1172 asmlinkage int sunos_setsockopt(int fd, int level, int optname,
1173 char __user *optval, int optlen)
1175 int tr_opt = optname;
1178 if (level == SOL_IP) {
1179 /* Multicast socketopts (ttl, membership) */
1180 if (tr_opt >=2 && tr_opt <= 6)
1183 ret = sys_setsockopt(fd, level, tr_opt, optval, optlen);
1187 asmlinkage int sunos_getsockopt(int fd, int level, int optname,
1188 char __user *optval, int __user *optlen)
1190 int tr_opt = optname;
1193 if (level == SOL_IP) {
1194 /* Multicast socketopts (ttl, membership) */
1195 if (tr_opt >=2 && tr_opt <= 6)
1198 ret = sys_getsockopt(fd, level, tr_opt, optval, optlen);