2 * linux/arch/alpha/kernel/osf_sys.c
4 * Copyright (C) 1995 Linus Torvalds
8 * This file handles some of the stranger OSF/1 system call interfaces.
9 * Some of the system calls expect a non-C calling standard, others have
10 * special parameter blocks..
13 #include <linux/errno.h>
14 #include <linux/sched/signal.h>
15 #include <linux/sched/mm.h>
16 #include <linux/sched/task_stack.h>
17 #include <linux/sched/cputime.h>
18 #include <linux/kernel.h>
20 #include <linux/smp.h>
21 #include <linux/stddef.h>
22 #include <linux/syscalls.h>
23 #include <linux/unistd.h>
24 #include <linux/ptrace.h>
25 #include <linux/user.h>
26 #include <linux/utsname.h>
27 #include <linux/time.h>
28 #include <linux/timex.h>
29 #include <linux/major.h>
30 #include <linux/stat.h>
31 #include <linux/mman.h>
32 #include <linux/shm.h>
33 #include <linux/poll.h>
34 #include <linux/file.h>
35 #include <linux/types.h>
36 #include <linux/ipc.h>
37 #include <linux/namei.h>
38 #include <linux/uio.h>
39 #include <linux/vfs.h>
40 #include <linux/rcupdate.h>
41 #include <linux/slab.h>
45 #include <linux/uaccess.h>
46 #include <asm/sysinfo.h>
47 #include <asm/thread_info.h>
48 #include <asm/hwrpb.h>
49 #include <asm/processor.h>
52 * Brk needs to return an error. Still support Linux's brk(0) query idiom,
53 * which OSF programs just shouldn't be doing. We're still not quite
54 * identical to OSF as we don't return 0 on success, but doing otherwise
55 * would require changes to libc. Hopefully this is good enough.
57 SYSCALL_DEFINE1(osf_brk, unsigned long, brk)
59 unsigned long retval = sys_brk(brk);
60 if (brk && brk != retval)
66 * This is pure guess-work..
68 SYSCALL_DEFINE4(osf_set_program_attributes, unsigned long, text_start,
69 unsigned long, text_len, unsigned long, bss_start,
70 unsigned long, bss_len)
75 mm->end_code = bss_start + bss_len;
76 mm->start_brk = bss_start + bss_len;
77 mm->brk = bss_start + bss_len;
79 printk("set_program_attributes(%lx %lx %lx %lx)\n",
80 text_start, text_len, bss_start, bss_len);
86 * OSF/1 directory handling functions...
88 * The "getdents()" interface is much more sane: the "basep" stuff is
89 * braindamage (it can't really handle filesystems where the directory
90 * offset differences aren't the same as "d_reclen").
92 #define NAME_OFFSET offsetof (struct osf_dirent, d_name)
96 unsigned short d_reclen;
97 unsigned short d_namlen;
101 struct osf_dirent_callback {
102 struct dir_context ctx;
103 struct osf_dirent __user *dirent;
110 osf_filldir(struct dir_context *ctx, const char *name, int namlen,
111 loff_t offset, u64 ino, unsigned int d_type)
113 struct osf_dirent __user *dirent;
114 struct osf_dirent_callback *buf =
115 container_of(ctx, struct osf_dirent_callback, ctx);
116 unsigned int reclen = ALIGN(NAME_OFFSET + namlen + 1, sizeof(u32));
119 buf->error = -EINVAL; /* only used if we fail */
120 if (reclen > buf->count)
123 if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) {
124 buf->error = -EOVERFLOW;
128 if (put_user(offset, buf->basep))
132 dirent = buf->dirent;
133 if (put_user(d_ino, &dirent->d_ino) ||
134 put_user(namlen, &dirent->d_namlen) ||
135 put_user(reclen, &dirent->d_reclen) ||
136 copy_to_user(dirent->d_name, name, namlen) ||
137 put_user(0, dirent->d_name + namlen))
139 dirent = (void __user *)dirent + reclen;
140 buf->dirent = dirent;
141 buf->count -= reclen;
144 buf->error = -EFAULT;
148 SYSCALL_DEFINE4(osf_getdirentries, unsigned int, fd,
149 struct osf_dirent __user *, dirent, unsigned int, count,
150 long __user *, basep)
153 struct fd arg = fdget_pos(fd);
154 struct osf_dirent_callback buf = {
155 .ctx.actor = osf_filldir,
164 error = iterate_dir(arg.file, &buf.ctx);
167 if (count != buf.count)
168 error = count - buf.count;
176 SYSCALL_DEFINE6(osf_mmap, unsigned long, addr, unsigned long, len,
177 unsigned long, prot, unsigned long, flags, unsigned long, fd,
180 unsigned long ret = -EINVAL;
183 if (flags & (_MAP_HASSEMAPHORE | _MAP_INHERIT | _MAP_UNALIGNED))
184 printk("%s: unimplemented OSF mmap flags %04lx\n",
185 current->comm, flags);
187 if ((off + PAGE_ALIGN(len)) < off)
189 if (off & ~PAGE_MASK)
191 ret = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT);
200 unsigned short st_nlink;
201 short st_nlink_reserved;
221 int st_atime_reserved;
223 int st_mtime_reserved;
225 int st_ctime_reserved;
231 * The OSF/1 statfs structure is much larger, but this should
232 * match the beginning, at least.
244 __kernel_fsid_t f_fsid;
247 struct osf_statfs64 {
257 __kernel_fsid_t f_fsid;
276 linux_to_osf_stat(struct kstat *lstat, struct osf_stat __user *osf_stat)
278 struct osf_stat tmp = { 0 };
280 tmp.st_dev = lstat->dev;
281 tmp.st_mode = lstat->mode;
282 tmp.st_nlink = lstat->nlink;
283 tmp.st_uid = from_kuid_munged(current_user_ns(), lstat->uid);
284 tmp.st_gid = from_kgid_munged(current_user_ns(), lstat->gid);
285 tmp.st_rdev = lstat->rdev;
286 tmp.st_ldev = lstat->rdev;
287 tmp.st_size = lstat->size;
288 tmp.st_uatime = lstat->atime.tv_nsec / 1000;
289 tmp.st_umtime = lstat->mtime.tv_nsec / 1000;
290 tmp.st_uctime = lstat->ctime.tv_nsec / 1000;
291 tmp.st_ino = lstat->ino;
292 tmp.st_atime = lstat->atime.tv_sec;
293 tmp.st_mtime = lstat->mtime.tv_sec;
294 tmp.st_ctime = lstat->ctime.tv_sec;
295 tmp.st_blksize = lstat->blksize;
296 tmp.st_blocks = lstat->blocks;
298 return copy_to_user(osf_stat, &tmp, sizeof(tmp)) ? -EFAULT : 0;
302 linux_to_osf_statfs(struct kstatfs *linux_stat, struct osf_statfs __user *osf_stat,
303 unsigned long bufsiz)
305 struct osf_statfs tmp_stat;
307 tmp_stat.f_type = linux_stat->f_type;
308 tmp_stat.f_flags = 0; /* mount flags */
309 tmp_stat.f_fsize = linux_stat->f_frsize;
310 tmp_stat.f_bsize = linux_stat->f_bsize;
311 tmp_stat.f_blocks = linux_stat->f_blocks;
312 tmp_stat.f_bfree = linux_stat->f_bfree;
313 tmp_stat.f_bavail = linux_stat->f_bavail;
314 tmp_stat.f_files = linux_stat->f_files;
315 tmp_stat.f_ffree = linux_stat->f_ffree;
316 tmp_stat.f_fsid = linux_stat->f_fsid;
317 if (bufsiz > sizeof(tmp_stat))
318 bufsiz = sizeof(tmp_stat);
319 return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0;
323 linux_to_osf_statfs64(struct kstatfs *linux_stat, struct osf_statfs64 __user *osf_stat,
324 unsigned long bufsiz)
326 struct osf_statfs64 tmp_stat = { 0 };
328 tmp_stat.f_type = linux_stat->f_type;
329 tmp_stat.f_fsize = linux_stat->f_frsize;
330 tmp_stat.f_bsize = linux_stat->f_bsize;
331 tmp_stat.f_blocks = linux_stat->f_blocks;
332 tmp_stat.f_bfree = linux_stat->f_bfree;
333 tmp_stat.f_bavail = linux_stat->f_bavail;
334 tmp_stat.f_files = linux_stat->f_files;
335 tmp_stat.f_ffree = linux_stat->f_ffree;
336 tmp_stat.f_fsid = linux_stat->f_fsid;
337 if (bufsiz > sizeof(tmp_stat))
338 bufsiz = sizeof(tmp_stat);
339 return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0;
342 SYSCALL_DEFINE3(osf_statfs, const char __user *, pathname,
343 struct osf_statfs __user *, buffer, unsigned long, bufsiz)
345 struct kstatfs linux_stat;
346 int error = user_statfs(pathname, &linux_stat);
348 error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz);
352 SYSCALL_DEFINE2(osf_stat, char __user *, name, struct osf_stat __user *, buf)
357 error = vfs_stat(name, &stat);
361 return linux_to_osf_stat(&stat, buf);
364 SYSCALL_DEFINE2(osf_lstat, char __user *, name, struct osf_stat __user *, buf)
369 error = vfs_lstat(name, &stat);
373 return linux_to_osf_stat(&stat, buf);
376 SYSCALL_DEFINE2(osf_fstat, int, fd, struct osf_stat __user *, buf)
381 error = vfs_fstat(fd, &stat);
385 return linux_to_osf_stat(&stat, buf);
388 SYSCALL_DEFINE3(osf_fstatfs, unsigned long, fd,
389 struct osf_statfs __user *, buffer, unsigned long, bufsiz)
391 struct kstatfs linux_stat;
392 int error = fd_statfs(fd, &linux_stat);
394 error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz);
398 SYSCALL_DEFINE3(osf_statfs64, char __user *, pathname,
399 struct osf_statfs64 __user *, buffer, unsigned long, bufsiz)
401 struct kstatfs linux_stat;
402 int error = user_statfs(pathname, &linux_stat);
404 error = linux_to_osf_statfs64(&linux_stat, buffer, bufsiz);
408 SYSCALL_DEFINE3(osf_fstatfs64, unsigned long, fd,
409 struct osf_statfs64 __user *, buffer, unsigned long, bufsiz)
411 struct kstatfs linux_stat;
412 int error = fd_statfs(fd, &linux_stat);
414 error = linux_to_osf_statfs64(&linux_stat, buffer, bufsiz);
419 * Uhh.. OSF/1 mount parameters aren't exactly obvious..
421 * Although to be frank, neither are the native Linux/i386 ones..
424 char __user *devname;
430 char __user *devname;
434 /* This has lots more here, which Linux handles with the option block
435 but I'm too lazy to do the translation into ASCII. */
439 char __user *devname;
445 * We can't actually handle ufs yet, so we translate UFS mounts to
446 * ext2fs mounts. I wouldn't mind a UFS filesystem, but the UFS
447 * layout is so braindead it's a major headache doing it.
449 * Just how long ago was it written? OTOH our UFS driver may be still
450 * unhappy with OSF UFS. [CHECKME]
453 osf_ufs_mount(const char __user *dirname,
454 struct ufs_args __user *args, int flags)
457 struct cdfs_args tmp;
458 struct filename *devname;
461 if (copy_from_user(&tmp, args, sizeof(tmp)))
463 devname = getname(tmp.devname);
464 retval = PTR_ERR(devname);
467 retval = do_mount(devname->name, dirname, "ext2", flags, NULL);
474 osf_cdfs_mount(const char __user *dirname,
475 struct cdfs_args __user *args, int flags)
478 struct cdfs_args tmp;
479 struct filename *devname;
482 if (copy_from_user(&tmp, args, sizeof(tmp)))
484 devname = getname(tmp.devname);
485 retval = PTR_ERR(devname);
488 retval = do_mount(devname->name, dirname, "iso9660", flags, NULL);
495 osf_procfs_mount(const char __user *dirname,
496 struct procfs_args __user *args, int flags)
498 struct procfs_args tmp;
500 if (copy_from_user(&tmp, args, sizeof(tmp)))
503 return do_mount("", dirname, "proc", flags, NULL);
506 SYSCALL_DEFINE4(osf_mount, unsigned long, typenr, const char __user *, path,
507 int, flag, void __user *, data)
513 retval = osf_ufs_mount(path, data, flag);
516 retval = osf_cdfs_mount(path, data, flag);
519 retval = osf_procfs_mount(path, data, flag);
523 printk("osf_mount(%ld, %x)\n", typenr, flag);
529 SYSCALL_DEFINE1(osf_utsname, char __user *, name)
535 if (copy_to_user(name + 0, utsname()->sysname, 32))
537 if (copy_to_user(name + 32, utsname()->nodename, 32))
539 if (copy_to_user(name + 64, utsname()->release, 32))
541 if (copy_to_user(name + 96, utsname()->version, 32))
543 if (copy_to_user(name + 128, utsname()->machine, 32))
552 SYSCALL_DEFINE0(getpagesize)
557 SYSCALL_DEFINE0(getdtablesize)
559 return sysctl_nr_open;
563 * For compatibility with OSF/1 only. Use utsname(2) instead.
565 SYSCALL_DEFINE2(osf_getdomainname, char __user *, name, int, namelen)
574 kname = utsname()->domainname;
575 len = strnlen(kname, namelen);
576 if (copy_to_user(name, kname, min(len + 1, namelen)))
584 * The following stuff should move into a header file should it ever
585 * be labeled "officially supported." Right now, there is just enough
586 * support to avoid applications (such as tar) printing error
587 * messages. The attributes are not really implemented.
591 * Values for Property list entry flag
593 #define PLE_PROPAGATE_ON_COPY 0x1 /* cp(1) will copy entry
595 #define PLE_FLAG_MASK 0x1 /* Valid flag values */
596 #define PLE_FLAG_ALL -1 /* All flag value */
598 struct proplistname_args {
599 unsigned int pl_mask;
600 unsigned int pl_numnames;
619 struct proplistname_args __user *name_args;
622 int __user *min_buf_size;
626 struct proplistname_args __user *name_args;
629 int __user *min_buf_size;
634 struct proplistname_args __user *name_args;
638 struct proplistname_args __user *name_args;
643 PL_SET = 1, PL_FSET = 2,
644 PL_GET = 3, PL_FGET = 4,
645 PL_DEL = 5, PL_FDEL = 6
648 SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code,
649 union pl_args __user *, args)
652 int __user *min_buf_size_ptr;
656 if (get_user(error, &args->set.nbytes))
660 if (get_user(error, &args->fset.nbytes))
664 error = get_user(min_buf_size_ptr, &args->get.min_buf_size);
667 error = put_user(0, min_buf_size_ptr);
670 error = get_user(min_buf_size_ptr, &args->fget.min_buf_size);
673 error = put_user(0, min_buf_size_ptr);
686 SYSCALL_DEFINE2(osf_sigstack, struct sigstack __user *, uss,
687 struct sigstack __user *, uoss)
689 unsigned long usp = rdusp();
690 unsigned long oss_sp = current->sas_ss_sp + current->sas_ss_size;
691 unsigned long oss_os = on_sig_stack(usp);
698 if (get_user(ss_sp, &uss->ss_sp))
701 /* If the current stack was set with sigaltstack, don't
702 swap stacks while we are on it. */
704 if (current->sas_ss_sp && on_sig_stack(usp))
707 /* Since we don't know the extent of the stack, and we don't
708 track onstack-ness, but rather calculate it, we must
709 presume a size. Ho hum this interface is lossy. */
710 current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ;
711 current->sas_ss_size = SIGSTKSZ;
716 if (put_user(oss_sp, &uoss->ss_sp) ||
717 put_user(oss_os, &uoss->ss_onstack))
726 SYSCALL_DEFINE3(osf_sysinfo, int, command, char __user *, buf, long, count)
728 const char *sysinfo_table[] = {
734 "alpha", /* instruction set architecture */
735 "dummy", /* hardware serial number */
736 "dummy", /* hardware manufacturer */
737 "dummy", /* secure RPC domain */
739 unsigned long offset;
741 long len, err = -EINVAL;
744 if (offset >= ARRAY_SIZE(sysinfo_table)) {
745 /* Digital UNIX has a few unpublished interfaces here */
746 printk("sysinfo(%d)", command);
751 res = sysinfo_table[offset];
753 if ((unsigned long)len > (unsigned long)count)
755 if (copy_to_user(buf, res, len))
764 SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer,
765 unsigned long, nbytes, int __user *, start, void __user *, arg)
768 struct percpu_struct *cpu;
771 case GSI_IEEE_FP_CONTROL:
772 /* Return current software fp control & status bits. */
773 /* Note that DU doesn't verify available space here. */
775 w = current_thread_info()->ieee_state & IEEE_SW_MASK;
776 w = swcr_update_status(w, rdfpcr());
777 if (put_user(w, (unsigned long __user *) buffer))
781 case GSI_IEEE_STATE_AT_SIGNAL:
783 * Not sure anybody will ever use this weird stuff. These
784 * ops can be used (under OSF/1) to set the fpcr that should
785 * be used when a signal handler starts executing.
790 if (nbytes < sizeof(unsigned int))
792 w = current_thread_info()->status & UAC_BITMASK;
793 if (put_user(w, (unsigned int __user *)buffer))
798 if (nbytes < sizeof(unsigned long))
800 cpu = (struct percpu_struct*)
801 ((char*)hwrpb + hwrpb->processor_offset);
803 if (put_user(w, (unsigned long __user*)buffer))
808 if (nbytes > sizeof(*hwrpb))
810 if (copy_to_user(buffer, hwrpb, nbytes) != 0)
821 SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer,
822 unsigned long, nbytes, int __user *, start, void __user *, arg)
825 case SSI_IEEE_FP_CONTROL: {
826 unsigned long swcr, fpcr;
830 * Alpha Architecture Handbook 4.7.7.3:
831 * To be fully IEEE compiant, we must track the current IEEE
832 * exception state in software, because spurious bits can be
833 * set in the trap shadow of a software-complete insn.
836 if (get_user(swcr, (unsigned long __user *)buffer))
838 state = ¤t_thread_info()->ieee_state;
840 /* Update softare trap enable bits. */
841 *state = (*state & ~IEEE_SW_MASK) | (swcr & IEEE_SW_MASK);
843 /* Update the real fpcr. */
844 fpcr = rdfpcr() & FPCR_DYN_MASK;
845 fpcr |= ieee_swcr_to_fpcr(swcr);
851 case SSI_IEEE_RAISE_EXCEPTION: {
852 unsigned long exc, swcr, fpcr, fex;
855 if (get_user(exc, (unsigned long __user *)buffer))
857 state = ¤t_thread_info()->ieee_state;
858 exc &= IEEE_STATUS_MASK;
860 /* Update softare trap enable bits. */
861 swcr = (*state & IEEE_SW_MASK) | exc;
864 /* Update the real fpcr. */
866 fpcr |= ieee_swcr_to_fpcr(swcr);
869 /* If any exceptions set by this call, and are unmasked,
870 send a signal. Old exceptions are not signaled. */
871 fex = (exc >> IEEE_STATUS_TO_EXCSUM_SHIFT) & swcr;
876 if (fex & IEEE_TRAP_ENABLE_DNO) si_code = FPE_FLTUND;
877 if (fex & IEEE_TRAP_ENABLE_INE) si_code = FPE_FLTRES;
878 if (fex & IEEE_TRAP_ENABLE_UNF) si_code = FPE_FLTUND;
879 if (fex & IEEE_TRAP_ENABLE_OVF) si_code = FPE_FLTOVF;
880 if (fex & IEEE_TRAP_ENABLE_DZE) si_code = FPE_FLTDIV;
881 if (fex & IEEE_TRAP_ENABLE_INV) si_code = FPE_FLTINV;
883 info.si_signo = SIGFPE;
885 info.si_code = si_code;
886 info.si_addr = NULL; /* FIXME */
887 send_sig_info(SIGFPE, &info, current);
892 case SSI_IEEE_STATE_AT_SIGNAL:
893 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL:
895 * Not sure anybody will ever use this weird stuff. These
896 * ops can be used (under OSF/1) to set the fpcr that should
897 * be used when a signal handler starts executing.
902 unsigned __user *p = buffer;
905 for (i = 0, p = buffer; i < nbytes; ++i, p += 2) {
906 unsigned v, w, status;
908 if (get_user(v, p) || get_user(w, p + 1))
913 status = current_thread_info()->status;
914 status = (status & ~UAC_BITMASK) | w;
915 current_thread_info()->status = status;
935 /* Translations due to the fact that OSF's time_t is an int. Which
936 affects all sorts of things, like timeval and itimerval. */
938 extern struct timezone sys_tz;
947 struct timeval32 it_interval;
948 struct timeval32 it_value;
952 get_tv32(struct timeval *o, struct timeval32 __user *i)
955 if (copy_from_user(&tv, i, sizeof(struct timeval32)))
957 o->tv_sec = tv.tv_sec;
958 o->tv_usec = tv.tv_usec;
963 put_tv32(struct timeval32 __user *o, struct timeval *i)
965 return copy_to_user(o, &(struct timeval32){
967 .tv_usec = o->tv_usec},
968 sizeof(struct timeval32));
972 get_it32(struct itimerval *o, struct itimerval32 __user *i)
974 struct itimerval32 itv;
975 if (copy_from_user(&itv, i, sizeof(struct itimerval32)))
977 o->it_interval.tv_sec = itv.it_interval.tv_sec;
978 o->it_interval.tv_usec = itv.it_interval.tv_usec;
979 o->it_value.tv_sec = itv.it_value.tv_sec;
980 o->it_value.tv_usec = itv.it_value.tv_usec;
985 put_it32(struct itimerval32 __user *o, struct itimerval *i)
987 return copy_to_user(o, &(struct itimerval32){
988 .it_interval.tv_sec = o->it_interval.tv_sec,
989 .it_interval.tv_usec = o->it_interval.tv_usec,
990 .it_value.tv_sec = o->it_value.tv_sec,
991 .it_value.tv_usec = o->it_value.tv_usec},
992 sizeof(struct itimerval32));
996 jiffies_to_timeval32(unsigned long jiffies, struct timeval32 *value)
998 value->tv_usec = (jiffies % HZ) * (1000000L / HZ);
999 value->tv_sec = jiffies / HZ;
1002 SYSCALL_DEFINE2(osf_gettimeofday, struct timeval32 __user *, tv,
1003 struct timezone __user *, tz)
1007 do_gettimeofday(&ktv);
1008 if (put_tv32(tv, &ktv))
1012 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
1018 SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv,
1019 struct timezone __user *, tz)
1021 struct timespec64 kts64;
1022 struct timespec kts;
1023 struct timezone ktz;
1026 if (get_tv32((struct timeval *)&kts, tv))
1028 kts.tv_nsec *= 1000;
1029 kts64 = timespec_to_timespec64(kts);
1032 if (copy_from_user(&ktz, tz, sizeof(*tz)))
1036 return do_sys_settimeofday64(tv ? &kts64 : NULL, tz ? &ktz : NULL);
1039 asmlinkage long sys_ni_posix_timers(void);
1041 SYSCALL_DEFINE2(osf_getitimer, int, which, struct itimerval32 __user *, it)
1043 struct itimerval kit;
1046 if (!IS_ENABLED(CONFIG_POSIX_TIMERS))
1047 return sys_ni_posix_timers();
1049 error = do_getitimer(which, &kit);
1050 if (!error && put_it32(it, &kit))
1056 SYSCALL_DEFINE3(osf_setitimer, int, which, struct itimerval32 __user *, in,
1057 struct itimerval32 __user *, out)
1059 struct itimerval kin, kout;
1062 if (!IS_ENABLED(CONFIG_POSIX_TIMERS))
1063 return sys_ni_posix_timers();
1066 if (get_it32(&kin, in))
1069 memset(&kin, 0, sizeof(kin));
1071 error = do_setitimer(which, &kin, out ? &kout : NULL);
1075 if (put_it32(out, &kout))
1082 SYSCALL_DEFINE2(osf_utimes, const char __user *, filename,
1083 struct timeval32 __user *, tvs)
1085 struct timespec tv[2];
1088 struct timeval ktvs[2];
1089 if (get_tv32(&ktvs[0], &tvs[0]) ||
1090 get_tv32(&ktvs[1], &tvs[1]))
1093 if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 ||
1094 ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000)
1097 tv[0].tv_sec = ktvs[0].tv_sec;
1098 tv[0].tv_nsec = 1000 * ktvs[0].tv_usec;
1099 tv[1].tv_sec = ktvs[1].tv_sec;
1100 tv[1].tv_nsec = 1000 * ktvs[1].tv_usec;
1103 return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0);
1106 SYSCALL_DEFINE5(osf_select, int, n, fd_set __user *, inp, fd_set __user *, outp,
1107 fd_set __user *, exp, struct timeval32 __user *, tvp)
1109 struct timespec end_time, *to = NULL;
1114 if (get_tv32(&tv, tvp))
1117 if (tv.tv_sec < 0 || tv.tv_usec < 0)
1120 if (poll_select_set_timeout(to, tv.tv_sec,
1121 tv.tv_usec * NSEC_PER_USEC))
1126 /* OSF does not copy back the remaining time. */
1127 return core_sys_select(n, inp, outp, exp, to);
1131 struct timeval32 ru_utime; /* user time used */
1132 struct timeval32 ru_stime; /* system time used */
1133 long ru_maxrss; /* maximum resident set size */
1134 long ru_ixrss; /* integral shared memory size */
1135 long ru_idrss; /* integral unshared data size */
1136 long ru_isrss; /* integral unshared stack size */
1137 long ru_minflt; /* page reclaims */
1138 long ru_majflt; /* page faults */
1139 long ru_nswap; /* swaps */
1140 long ru_inblock; /* block input operations */
1141 long ru_oublock; /* block output operations */
1142 long ru_msgsnd; /* messages sent */
1143 long ru_msgrcv; /* messages received */
1144 long ru_nsignals; /* signals received */
1145 long ru_nvcsw; /* voluntary context switches */
1146 long ru_nivcsw; /* involuntary " */
1149 SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru)
1153 unsigned long utime_jiffies, stime_jiffies;
1155 if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN)
1158 memset(&r, 0, sizeof(r));
1161 task_cputime(current, &utime, &stime);
1162 utime_jiffies = nsecs_to_jiffies(utime);
1163 stime_jiffies = nsecs_to_jiffies(stime);
1164 jiffies_to_timeval32(utime_jiffies, &r.ru_utime);
1165 jiffies_to_timeval32(stime_jiffies, &r.ru_stime);
1166 r.ru_minflt = current->min_flt;
1167 r.ru_majflt = current->maj_flt;
1169 case RUSAGE_CHILDREN:
1170 utime_jiffies = nsecs_to_jiffies(current->signal->cutime);
1171 stime_jiffies = nsecs_to_jiffies(current->signal->cstime);
1172 jiffies_to_timeval32(utime_jiffies, &r.ru_utime);
1173 jiffies_to_timeval32(stime_jiffies, &r.ru_stime);
1174 r.ru_minflt = current->signal->cmin_flt;
1175 r.ru_majflt = current->signal->cmaj_flt;
1179 return copy_to_user(ru, &r, sizeof(r)) ? -EFAULT : 0;
1182 SYSCALL_DEFINE4(osf_wait4, pid_t, pid, int __user *, ustatus, int, options,
1183 struct rusage32 __user *, ur)
1185 unsigned int status = 0;
1187 long err = kernel_wait4(pid, &status, options, &r);
1190 if (put_user(status, ustatus))
1194 if (put_tv32(&ur->ru_utime, &r.ru_utime))
1196 if (put_tv32(&ur->ru_stime, &r.ru_stime))
1198 if (copy_to_user(&ur->ru_maxrss, &r.ru_maxrss,
1199 sizeof(struct rusage32) - offsetof(struct rusage32, ru_maxrss)))
1205 * I don't know what the parameters are: the first one
1206 * seems to be a timeval pointer, and I suspect the second
1207 * one is the time remaining.. Ho humm.. No documentation.
1209 SYSCALL_DEFINE2(osf_usleep_thread, struct timeval32 __user *, sleep,
1210 struct timeval32 __user *, remain)
1213 unsigned long ticks;
1215 if (get_tv32(&tmp, sleep))
1218 ticks = timeval_to_jiffies(&tmp);
1220 ticks = schedule_timeout_interruptible(ticks);
1223 jiffies_to_timeval(ticks, &tmp);
1224 if (put_tv32(remain, &tmp))
1235 unsigned int modes; /* mode selector */
1236 long offset; /* time offset (usec) */
1237 long freq; /* frequency offset (scaled ppm) */
1238 long maxerror; /* maximum error (usec) */
1239 long esterror; /* estimated error (usec) */
1240 int status; /* clock command/status */
1241 long constant; /* pll time constant */
1242 long precision; /* clock precision (usec) (read only) */
1243 long tolerance; /* clock frequency tolerance (ppm)
1246 struct timeval32 time; /* (read only) */
1247 long tick; /* (modified) usecs between clock ticks */
1249 long ppsfreq; /* pps frequency (scaled ppm) (ro) */
1250 long jitter; /* pps jitter (us) (ro) */
1251 int shift; /* interval duration (s) (shift) (ro) */
1252 long stabil; /* pps stability (scaled ppm) (ro) */
1253 long jitcnt; /* jitter limit exceeded (ro) */
1254 long calcnt; /* calibration intervals (ro) */
1255 long errcnt; /* calibration errors (ro) */
1256 long stbcnt; /* stability limit exceeded (ro) */
1258 int :32; int :32; int :32; int :32;
1259 int :32; int :32; int :32; int :32;
1260 int :32; int :32; int :32; int :32;
1263 SYSCALL_DEFINE1(old_adjtimex, struct timex32 __user *, txc_p)
1268 /* copy relevant bits of struct timex. */
1269 if (copy_from_user(&txc, txc_p, offsetof(struct timex32, time)) ||
1270 copy_from_user(&txc.tick, &txc_p->tick, sizeof(struct timex32) -
1271 offsetof(struct timex32, tick)))
1274 ret = do_adjtimex(&txc);
1278 /* copy back to timex32 */
1279 if (copy_to_user(txc_p, &txc, offsetof(struct timex32, time)) ||
1280 (copy_to_user(&txc_p->tick, &txc.tick, sizeof(struct timex32) -
1281 offsetof(struct timex32, tick))) ||
1282 (put_tv32(&txc_p->time, &txc.time)))
1288 /* Get an address range which is currently unmapped. Similar to the
1289 generic version except that we know how to honor ADDR_LIMIT_32BIT. */
1291 static unsigned long
1292 arch_get_unmapped_area_1(unsigned long addr, unsigned long len,
1293 unsigned long limit)
1295 struct vm_unmapped_area_info info;
1299 info.low_limit = addr;
1300 info.high_limit = limit;
1301 info.align_mask = 0;
1302 info.align_offset = 0;
1303 return vm_unmapped_area(&info);
1307 arch_get_unmapped_area(struct file *filp, unsigned long addr,
1308 unsigned long len, unsigned long pgoff,
1309 unsigned long flags)
1311 unsigned long limit;
1313 /* "32 bit" actually means 31 bit, since pointers sign extend. */
1314 if (current->personality & ADDR_LIMIT_32BIT)
1322 if (flags & MAP_FIXED)
1325 /* First, see if the given suggestion fits.
1327 The OSF/1 loader (/sbin/loader) relies on us returning an
1328 address larger than the requested if one exists, which is
1329 a terribly broken way to program.
1331 That said, I can see the use in being able to suggest not
1332 merely specific addresses, but regions of memory -- perhaps
1333 this feature should be incorporated into all ports? */
1336 addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit);
1337 if (addr != (unsigned long) -ENOMEM)
1341 /* Next, try allocating at TASK_UNMAPPED_BASE. */
1342 addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE),
1344 if (addr != (unsigned long) -ENOMEM)
1347 /* Finally, try allocating in low memory. */
1348 addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit);
1353 #ifdef CONFIG_OSF4_COMPAT
1355 /* Clear top 32 bits of iov_len in the user's buffer for
1356 compatibility with old versions of OSF/1 where iov_len
1357 was defined as int. */
1359 osf_fix_iov_len(const struct iovec __user *iov, unsigned long count)
1363 for (i = 0 ; i < count ; i++) {
1364 int __user *iov_len_high = (int __user *)&iov[i].iov_len + 1;
1366 if (put_user(0, iov_len_high))
1372 SYSCALL_DEFINE3(osf_readv, unsigned long, fd,
1373 const struct iovec __user *, vector, unsigned long, count)
1375 if (unlikely(personality(current->personality) == PER_OSF4))
1376 if (osf_fix_iov_len(vector, count))
1378 return sys_readv(fd, vector, count);
1381 SYSCALL_DEFINE3(osf_writev, unsigned long, fd,
1382 const struct iovec __user *, vector, unsigned long, count)
1384 if (unlikely(personality(current->personality) == PER_OSF4))
1385 if (osf_fix_iov_len(vector, count))
1387 return sys_writev(fd, vector, count);
1392 SYSCALL_DEFINE2(osf_getpriority, int, which, int, who)
1394 int prio = sys_getpriority(which, who);
1396 /* Return value is the unbiased priority, i.e. 20 - prio.
1397 This does result in negative return values, so signal
1399 force_successful_syscall_return();
1405 SYSCALL_DEFINE0(getxuid)
1407 current_pt_regs()->r20 = sys_geteuid();
1408 return sys_getuid();
1411 SYSCALL_DEFINE0(getxgid)
1413 current_pt_regs()->r20 = sys_getegid();
1414 return sys_getgid();
1417 SYSCALL_DEFINE0(getxpid)
1419 current_pt_regs()->r20 = sys_getppid();
1420 return sys_getpid();
1423 SYSCALL_DEFINE0(alpha_pipe)
1426 int res = do_pipe_flags(fd, 0);
1428 /* The return values are in $0 and $20. */
1429 current_pt_regs()->r20 = fd[1];
1435 SYSCALL_DEFINE1(sethae, unsigned long, val)
1437 current_pt_regs()->hae = val;