1 // SPDX-License-Identifier: GPL-2.0
3 * linux/arch/alpha/kernel/osf_sys.c
5 * Copyright (C) 1995 Linus Torvalds
9 * This file handles some of the stranger OSF/1 system call interfaces.
10 * Some of the system calls expect a non-C calling standard, others have
11 * special parameter blocks..
14 #include <linux/errno.h>
15 #include <linux/sched/signal.h>
16 #include <linux/sched/mm.h>
17 #include <linux/sched/task_stack.h>
18 #include <linux/sched/cputime.h>
19 #include <linux/kernel.h>
21 #include <linux/smp.h>
22 #include <linux/stddef.h>
23 #include <linux/syscalls.h>
24 #include <linux/unistd.h>
25 #include <linux/ptrace.h>
26 #include <linux/user.h>
27 #include <linux/utsname.h>
28 #include <linux/time.h>
29 #include <linux/timex.h>
30 #include <linux/major.h>
31 #include <linux/stat.h>
32 #include <linux/mman.h>
33 #include <linux/shm.h>
34 #include <linux/poll.h>
35 #include <linux/file.h>
36 #include <linux/types.h>
37 #include <linux/ipc.h>
38 #include <linux/namei.h>
39 #include <linux/mount.h>
40 #include <linux/uio.h>
41 #include <linux/vfs.h>
42 #include <linux/rcupdate.h>
43 #include <linux/slab.h>
47 #include <linux/uaccess.h>
48 #include <asm/sysinfo.h>
49 #include <asm/thread_info.h>
50 #include <asm/hwrpb.h>
51 #include <asm/processor.h>
54 * Brk needs to return an error. Still support Linux's brk(0) query idiom,
55 * which OSF programs just shouldn't be doing. We're still not quite
56 * identical to OSF as we don't return 0 on success, but doing otherwise
57 * would require changes to libc. Hopefully this is good enough.
59 SYSCALL_DEFINE1(osf_brk, unsigned long, brk)
61 unsigned long retval = sys_brk(brk);
62 if (brk && brk != retval)
68 * This is pure guess-work..
70 SYSCALL_DEFINE4(osf_set_program_attributes, unsigned long, text_start,
71 unsigned long, text_len, unsigned long, bss_start,
72 unsigned long, bss_len)
77 mm->end_code = bss_start + bss_len;
78 mm->start_brk = bss_start + bss_len;
79 mm->brk = bss_start + bss_len;
81 printk("set_program_attributes(%lx %lx %lx %lx)\n",
82 text_start, text_len, bss_start, bss_len);
88 * OSF/1 directory handling functions...
90 * The "getdents()" interface is much more sane: the "basep" stuff is
91 * braindamage (it can't really handle filesystems where the directory
92 * offset differences aren't the same as "d_reclen").
94 #define NAME_OFFSET offsetof (struct osf_dirent, d_name)
98 unsigned short d_reclen;
99 unsigned short d_namlen;
103 struct osf_dirent_callback {
104 struct dir_context ctx;
105 struct osf_dirent __user *dirent;
112 osf_filldir(struct dir_context *ctx, const char *name, int namlen,
113 loff_t offset, u64 ino, unsigned int d_type)
115 struct osf_dirent __user *dirent;
116 struct osf_dirent_callback *buf =
117 container_of(ctx, struct osf_dirent_callback, ctx);
118 unsigned int reclen = ALIGN(NAME_OFFSET + namlen + 1, sizeof(u32));
121 buf->error = -EINVAL; /* only used if we fail */
122 if (reclen > buf->count)
125 if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) {
126 buf->error = -EOVERFLOW;
130 if (put_user(offset, buf->basep))
134 dirent = buf->dirent;
135 if (put_user(d_ino, &dirent->d_ino) ||
136 put_user(namlen, &dirent->d_namlen) ||
137 put_user(reclen, &dirent->d_reclen) ||
138 copy_to_user(dirent->d_name, name, namlen) ||
139 put_user(0, dirent->d_name + namlen))
141 dirent = (void __user *)dirent + reclen;
142 buf->dirent = dirent;
143 buf->count -= reclen;
146 buf->error = -EFAULT;
150 SYSCALL_DEFINE4(osf_getdirentries, unsigned int, fd,
151 struct osf_dirent __user *, dirent, unsigned int, count,
152 long __user *, basep)
155 struct fd arg = fdget_pos(fd);
156 struct osf_dirent_callback buf = {
157 .ctx.actor = osf_filldir,
166 error = iterate_dir(arg.file, &buf.ctx);
169 if (count != buf.count)
170 error = count - buf.count;
178 SYSCALL_DEFINE6(osf_mmap, unsigned long, addr, unsigned long, len,
179 unsigned long, prot, unsigned long, flags, unsigned long, fd,
182 unsigned long ret = -EINVAL;
185 if (flags & (_MAP_HASSEMAPHORE | _MAP_INHERIT | _MAP_UNALIGNED))
186 printk("%s: unimplemented OSF mmap flags %04lx\n",
187 current->comm, flags);
189 if ((off + PAGE_ALIGN(len)) < off)
191 if (off & ~PAGE_MASK)
193 ret = ksys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT);
202 unsigned short st_nlink;
203 short st_nlink_reserved;
223 int st_atime_reserved;
225 int st_mtime_reserved;
227 int st_ctime_reserved;
233 * The OSF/1 statfs structure is much larger, but this should
234 * match the beginning, at least.
246 __kernel_fsid_t f_fsid;
249 struct osf_statfs64 {
259 __kernel_fsid_t f_fsid;
278 linux_to_osf_stat(struct kstat *lstat, struct osf_stat __user *osf_stat)
280 struct osf_stat tmp = { 0 };
282 tmp.st_dev = lstat->dev;
283 tmp.st_mode = lstat->mode;
284 tmp.st_nlink = lstat->nlink;
285 tmp.st_uid = from_kuid_munged(current_user_ns(), lstat->uid);
286 tmp.st_gid = from_kgid_munged(current_user_ns(), lstat->gid);
287 tmp.st_rdev = lstat->rdev;
288 tmp.st_ldev = lstat->rdev;
289 tmp.st_size = lstat->size;
290 tmp.st_uatime = lstat->atime.tv_nsec / 1000;
291 tmp.st_umtime = lstat->mtime.tv_nsec / 1000;
292 tmp.st_uctime = lstat->ctime.tv_nsec / 1000;
293 tmp.st_ino = lstat->ino;
294 tmp.st_atime = lstat->atime.tv_sec;
295 tmp.st_mtime = lstat->mtime.tv_sec;
296 tmp.st_ctime = lstat->ctime.tv_sec;
297 tmp.st_blksize = lstat->blksize;
298 tmp.st_blocks = lstat->blocks;
300 return copy_to_user(osf_stat, &tmp, sizeof(tmp)) ? -EFAULT : 0;
304 linux_to_osf_statfs(struct kstatfs *linux_stat, struct osf_statfs __user *osf_stat,
305 unsigned long bufsiz)
307 struct osf_statfs tmp_stat;
309 tmp_stat.f_type = linux_stat->f_type;
310 tmp_stat.f_flags = 0; /* mount flags */
311 tmp_stat.f_fsize = linux_stat->f_frsize;
312 tmp_stat.f_bsize = linux_stat->f_bsize;
313 tmp_stat.f_blocks = linux_stat->f_blocks;
314 tmp_stat.f_bfree = linux_stat->f_bfree;
315 tmp_stat.f_bavail = linux_stat->f_bavail;
316 tmp_stat.f_files = linux_stat->f_files;
317 tmp_stat.f_ffree = linux_stat->f_ffree;
318 tmp_stat.f_fsid = linux_stat->f_fsid;
319 if (bufsiz > sizeof(tmp_stat))
320 bufsiz = sizeof(tmp_stat);
321 return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0;
325 linux_to_osf_statfs64(struct kstatfs *linux_stat, struct osf_statfs64 __user *osf_stat,
326 unsigned long bufsiz)
328 struct osf_statfs64 tmp_stat = { 0 };
330 tmp_stat.f_type = linux_stat->f_type;
331 tmp_stat.f_fsize = linux_stat->f_frsize;
332 tmp_stat.f_bsize = linux_stat->f_bsize;
333 tmp_stat.f_blocks = linux_stat->f_blocks;
334 tmp_stat.f_bfree = linux_stat->f_bfree;
335 tmp_stat.f_bavail = linux_stat->f_bavail;
336 tmp_stat.f_files = linux_stat->f_files;
337 tmp_stat.f_ffree = linux_stat->f_ffree;
338 tmp_stat.f_fsid = linux_stat->f_fsid;
339 if (bufsiz > sizeof(tmp_stat))
340 bufsiz = sizeof(tmp_stat);
341 return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0;
344 SYSCALL_DEFINE3(osf_statfs, const char __user *, pathname,
345 struct osf_statfs __user *, buffer, unsigned long, bufsiz)
347 struct kstatfs linux_stat;
348 int error = user_statfs(pathname, &linux_stat);
350 error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz);
354 SYSCALL_DEFINE2(osf_stat, char __user *, name, struct osf_stat __user *, buf)
359 error = vfs_stat(name, &stat);
363 return linux_to_osf_stat(&stat, buf);
366 SYSCALL_DEFINE2(osf_lstat, char __user *, name, struct osf_stat __user *, buf)
371 error = vfs_lstat(name, &stat);
375 return linux_to_osf_stat(&stat, buf);
378 SYSCALL_DEFINE2(osf_fstat, int, fd, struct osf_stat __user *, buf)
383 error = vfs_fstat(fd, &stat);
387 return linux_to_osf_stat(&stat, buf);
390 SYSCALL_DEFINE3(osf_fstatfs, unsigned long, fd,
391 struct osf_statfs __user *, buffer, unsigned long, bufsiz)
393 struct kstatfs linux_stat;
394 int error = fd_statfs(fd, &linux_stat);
396 error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz);
400 SYSCALL_DEFINE3(osf_statfs64, char __user *, pathname,
401 struct osf_statfs64 __user *, buffer, unsigned long, bufsiz)
403 struct kstatfs linux_stat;
404 int error = user_statfs(pathname, &linux_stat);
406 error = linux_to_osf_statfs64(&linux_stat, buffer, bufsiz);
410 SYSCALL_DEFINE3(osf_fstatfs64, unsigned long, fd,
411 struct osf_statfs64 __user *, buffer, unsigned long, bufsiz)
413 struct kstatfs linux_stat;
414 int error = fd_statfs(fd, &linux_stat);
416 error = linux_to_osf_statfs64(&linux_stat, buffer, bufsiz);
421 * Uhh.. OSF/1 mount parameters aren't exactly obvious..
423 * Although to be frank, neither are the native Linux/i386 ones..
426 char __user *devname;
432 char __user *devname;
436 /* This has lots more here, which Linux handles with the option block
437 but I'm too lazy to do the translation into ASCII. */
441 char __user *devname;
447 * We can't actually handle ufs yet, so we translate UFS mounts to
448 * ext2fs mounts. I wouldn't mind a UFS filesystem, but the UFS
449 * layout is so braindead it's a major headache doing it.
451 * Just how long ago was it written? OTOH our UFS driver may be still
452 * unhappy with OSF UFS. [CHECKME]
455 osf_ufs_mount(const char __user *dirname,
456 struct ufs_args __user *args, int flags)
459 struct cdfs_args tmp;
460 struct filename *devname;
463 if (copy_from_user(&tmp, args, sizeof(tmp)))
465 devname = getname(tmp.devname);
466 retval = PTR_ERR(devname);
469 retval = do_mount(devname->name, dirname, "ext2", flags, NULL);
476 osf_cdfs_mount(const char __user *dirname,
477 struct cdfs_args __user *args, int flags)
480 struct cdfs_args tmp;
481 struct filename *devname;
484 if (copy_from_user(&tmp, args, sizeof(tmp)))
486 devname = getname(tmp.devname);
487 retval = PTR_ERR(devname);
490 retval = do_mount(devname->name, dirname, "iso9660", flags, NULL);
497 osf_procfs_mount(const char __user *dirname,
498 struct procfs_args __user *args, int flags)
500 struct procfs_args tmp;
502 if (copy_from_user(&tmp, args, sizeof(tmp)))
505 return do_mount("", dirname, "proc", flags, NULL);
508 SYSCALL_DEFINE4(osf_mount, unsigned long, typenr, const char __user *, path,
509 int, flag, void __user *, data)
515 retval = osf_ufs_mount(path, data, flag);
518 retval = osf_cdfs_mount(path, data, flag);
521 retval = osf_procfs_mount(path, data, flag);
525 printk("osf_mount(%ld, %x)\n", typenr, flag);
531 SYSCALL_DEFINE1(osf_utsname, char __user *, name)
536 memcpy(tmp + 0 * 32, utsname()->sysname, 32);
537 memcpy(tmp + 1 * 32, utsname()->nodename, 32);
538 memcpy(tmp + 2 * 32, utsname()->release, 32);
539 memcpy(tmp + 3 * 32, utsname()->version, 32);
540 memcpy(tmp + 4 * 32, utsname()->machine, 32);
543 if (copy_to_user(name, tmp, sizeof(tmp)))
548 SYSCALL_DEFINE0(getpagesize)
553 SYSCALL_DEFINE0(getdtablesize)
555 return sysctl_nr_open;
559 * For compatibility with OSF/1 only. Use utsname(2) instead.
561 SYSCALL_DEFINE2(osf_getdomainname, char __user *, name, int, namelen)
567 if (namelen < 0 || namelen > 32)
571 kname = utsname()->domainname;
572 len = strnlen(kname, namelen);
573 len = min(len + 1, namelen);
574 memcpy(tmp, kname, len);
577 if (copy_to_user(name, tmp, len))
583 * The following stuff should move into a header file should it ever
584 * be labeled "officially supported." Right now, there is just enough
585 * support to avoid applications (such as tar) printing error
586 * messages. The attributes are not really implemented.
590 * Values for Property list entry flag
592 #define PLE_PROPAGATE_ON_COPY 0x1 /* cp(1) will copy entry
594 #define PLE_FLAG_MASK 0x1 /* Valid flag values */
595 #define PLE_FLAG_ALL -1 /* All flag value */
597 struct proplistname_args {
598 unsigned int pl_mask;
599 unsigned int pl_numnames;
618 struct proplistname_args __user *name_args;
621 int __user *min_buf_size;
625 struct proplistname_args __user *name_args;
628 int __user *min_buf_size;
633 struct proplistname_args __user *name_args;
637 struct proplistname_args __user *name_args;
642 PL_SET = 1, PL_FSET = 2,
643 PL_GET = 3, PL_FGET = 4,
644 PL_DEL = 5, PL_FDEL = 6
647 SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code,
648 union pl_args __user *, args)
651 int __user *min_buf_size_ptr;
655 if (get_user(error, &args->set.nbytes))
659 if (get_user(error, &args->fset.nbytes))
663 error = get_user(min_buf_size_ptr, &args->get.min_buf_size);
666 error = put_user(0, min_buf_size_ptr);
669 error = get_user(min_buf_size_ptr, &args->fget.min_buf_size);
672 error = put_user(0, min_buf_size_ptr);
685 SYSCALL_DEFINE2(osf_sigstack, struct sigstack __user *, uss,
686 struct sigstack __user *, uoss)
688 unsigned long usp = rdusp();
689 unsigned long oss_sp = current->sas_ss_sp + current->sas_ss_size;
690 unsigned long oss_os = on_sig_stack(usp);
697 if (get_user(ss_sp, &uss->ss_sp))
700 /* If the current stack was set with sigaltstack, don't
701 swap stacks while we are on it. */
703 if (current->sas_ss_sp && on_sig_stack(usp))
706 /* Since we don't know the extent of the stack, and we don't
707 track onstack-ness, but rather calculate it, we must
708 presume a size. Ho hum this interface is lossy. */
709 current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ;
710 current->sas_ss_size = SIGSTKSZ;
715 if (put_user(oss_sp, &uoss->ss_sp) ||
716 put_user(oss_os, &uoss->ss_onstack))
725 SYSCALL_DEFINE3(osf_sysinfo, int, command, char __user *, buf, long, count)
727 const char *sysinfo_table[] = {
733 "alpha", /* instruction set architecture */
734 "dummy", /* hardware serial number */
735 "dummy", /* hardware manufacturer */
736 "dummy", /* secure RPC domain */
738 unsigned long offset;
741 char tmp[__NEW_UTS_LEN + 1];
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 memcpy(tmp, res, len);
757 if (copy_to_user(buf, tmp, len))
762 SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer,
763 unsigned long, nbytes, int __user *, start, void __user *, arg)
766 struct percpu_struct *cpu;
769 case GSI_IEEE_FP_CONTROL:
770 /* Return current software fp control & status bits. */
771 /* Note that DU doesn't verify available space here. */
773 w = current_thread_info()->ieee_state & IEEE_SW_MASK;
774 w = swcr_update_status(w, rdfpcr());
775 if (put_user(w, (unsigned long __user *) buffer))
779 case GSI_IEEE_STATE_AT_SIGNAL:
781 * Not sure anybody will ever use this weird stuff. These
782 * ops can be used (under OSF/1) to set the fpcr that should
783 * be used when a signal handler starts executing.
788 if (nbytes < sizeof(unsigned int))
790 w = current_thread_info()->status & UAC_BITMASK;
791 if (put_user(w, (unsigned int __user *)buffer))
796 if (nbytes < sizeof(unsigned long))
798 cpu = (struct percpu_struct*)
799 ((char*)hwrpb + hwrpb->processor_offset);
801 if (put_user(w, (unsigned long __user*)buffer))
806 if (nbytes > sizeof(*hwrpb))
808 if (copy_to_user(buffer, hwrpb, nbytes) != 0)
819 SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer,
820 unsigned long, nbytes, int __user *, start, void __user *, arg)
823 case SSI_IEEE_FP_CONTROL: {
824 unsigned long swcr, fpcr;
828 * Alpha Architecture Handbook 4.7.7.3:
829 * To be fully IEEE compiant, we must track the current IEEE
830 * exception state in software, because spurious bits can be
831 * set in the trap shadow of a software-complete insn.
834 if (get_user(swcr, (unsigned long __user *)buffer))
836 state = ¤t_thread_info()->ieee_state;
838 /* Update software trap enable bits. */
839 *state = (*state & ~IEEE_SW_MASK) | (swcr & IEEE_SW_MASK);
841 /* Update the real fpcr. */
842 fpcr = rdfpcr() & FPCR_DYN_MASK;
843 fpcr |= ieee_swcr_to_fpcr(swcr);
849 case SSI_IEEE_RAISE_EXCEPTION: {
850 unsigned long exc, swcr, fpcr, fex;
853 if (get_user(exc, (unsigned long __user *)buffer))
855 state = ¤t_thread_info()->ieee_state;
856 exc &= IEEE_STATUS_MASK;
858 /* Update software trap enable bits. */
859 swcr = (*state & IEEE_SW_MASK) | exc;
862 /* Update the real fpcr. */
864 fpcr |= ieee_swcr_to_fpcr(swcr);
867 /* If any exceptions set by this call, and are unmasked,
868 send a signal. Old exceptions are not signaled. */
869 fex = (exc >> IEEE_STATUS_TO_EXCSUM_SHIFT) & swcr;
871 int si_code = FPE_FLTUNK;
873 if (fex & IEEE_TRAP_ENABLE_DNO) si_code = FPE_FLTUND;
874 if (fex & IEEE_TRAP_ENABLE_INE) si_code = FPE_FLTRES;
875 if (fex & IEEE_TRAP_ENABLE_UNF) si_code = FPE_FLTUND;
876 if (fex & IEEE_TRAP_ENABLE_OVF) si_code = FPE_FLTOVF;
877 if (fex & IEEE_TRAP_ENABLE_DZE) si_code = FPE_FLTDIV;
878 if (fex & IEEE_TRAP_ENABLE_INV) si_code = FPE_FLTINV;
880 send_sig_fault_trapno(SIGFPE, si_code,
881 (void __user *)NULL, /* FIXME */
887 case SSI_IEEE_STATE_AT_SIGNAL:
888 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL:
890 * Not sure anybody will ever use this weird stuff. These
891 * ops can be used (under OSF/1) to set the fpcr that should
892 * be used when a signal handler starts executing.
897 unsigned __user *p = buffer;
900 for (i = 0, p = buffer; i < nbytes; ++i, p += 2) {
901 unsigned v, w, status;
903 if (get_user(v, p) || get_user(w, p + 1))
908 status = current_thread_info()->status;
909 status = (status & ~UAC_BITMASK) | w;
910 current_thread_info()->status = status;
930 /* Translations due to the fact that OSF's time_t is an int. Which
931 affects all sorts of things, like timeval and itimerval. */
933 extern struct timezone sys_tz;
942 struct timeval32 it_interval;
943 struct timeval32 it_value;
947 get_tv32(struct timespec64 *o, struct timeval32 __user *i)
950 if (copy_from_user(&tv, i, sizeof(struct timeval32)))
952 o->tv_sec = tv.tv_sec;
953 o->tv_nsec = tv.tv_usec * NSEC_PER_USEC;
958 put_tv32(struct timeval32 __user *o, struct timespec64 *i)
960 return copy_to_user(o, &(struct timeval32){
962 .tv_usec = i->tv_nsec / NSEC_PER_USEC},
963 sizeof(struct timeval32));
967 put_tv_to_tv32(struct timeval32 __user *o, struct __kernel_old_timeval *i)
969 return copy_to_user(o, &(struct timeval32){
971 .tv_usec = i->tv_usec},
972 sizeof(struct timeval32));
976 jiffies_to_timeval32(unsigned long jiffies, struct timeval32 *value)
978 value->tv_usec = (jiffies % HZ) * (1000000L / HZ);
979 value->tv_sec = jiffies / HZ;
982 SYSCALL_DEFINE2(osf_gettimeofday, struct timeval32 __user *, tv,
983 struct timezone __user *, tz)
986 struct timespec64 kts;
988 ktime_get_real_ts64(&kts);
989 if (put_tv32(tv, &kts))
993 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
999 SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv,
1000 struct timezone __user *, tz)
1002 struct timespec64 kts;
1003 struct timezone ktz;
1006 if (get_tv32(&kts, tv))
1010 if (copy_from_user(&ktz, tz, sizeof(*tz)))
1014 return do_sys_settimeofday64(tv ? &kts : NULL, tz ? &ktz : NULL);
1017 asmlinkage long sys_ni_posix_timers(void);
1019 SYSCALL_DEFINE2(osf_utimes, const char __user *, filename,
1020 struct timeval32 __user *, tvs)
1022 struct timespec64 tv[2];
1025 if (get_tv32(&tv[0], &tvs[0]) ||
1026 get_tv32(&tv[1], &tvs[1]))
1029 if (tv[0].tv_nsec < 0 || tv[0].tv_nsec >= 1000000000 ||
1030 tv[1].tv_nsec < 0 || tv[1].tv_nsec >= 1000000000)
1034 return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0);
1037 SYSCALL_DEFINE5(osf_select, int, n, fd_set __user *, inp, fd_set __user *, outp,
1038 fd_set __user *, exp, struct timeval32 __user *, tvp)
1040 struct timespec64 end_time, *to = NULL;
1042 struct timespec64 tv;
1045 if (get_tv32(&tv, tvp))
1048 if (tv.tv_sec < 0 || tv.tv_nsec < 0)
1051 if (poll_select_set_timeout(to, tv.tv_sec, tv.tv_nsec))
1056 /* OSF does not copy back the remaining time. */
1057 return core_sys_select(n, inp, outp, exp, to);
1061 struct timeval32 ru_utime; /* user time used */
1062 struct timeval32 ru_stime; /* system time used */
1063 long ru_maxrss; /* maximum resident set size */
1064 long ru_ixrss; /* integral shared memory size */
1065 long ru_idrss; /* integral unshared data size */
1066 long ru_isrss; /* integral unshared stack size */
1067 long ru_minflt; /* page reclaims */
1068 long ru_majflt; /* page faults */
1069 long ru_nswap; /* swaps */
1070 long ru_inblock; /* block input operations */
1071 long ru_oublock; /* block output operations */
1072 long ru_msgsnd; /* messages sent */
1073 long ru_msgrcv; /* messages received */
1074 long ru_nsignals; /* signals received */
1075 long ru_nvcsw; /* voluntary context switches */
1076 long ru_nivcsw; /* involuntary " */
1079 SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru)
1083 unsigned long utime_jiffies, stime_jiffies;
1085 if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN)
1088 memset(&r, 0, sizeof(r));
1091 task_cputime(current, &utime, &stime);
1092 utime_jiffies = nsecs_to_jiffies(utime);
1093 stime_jiffies = nsecs_to_jiffies(stime);
1094 jiffies_to_timeval32(utime_jiffies, &r.ru_utime);
1095 jiffies_to_timeval32(stime_jiffies, &r.ru_stime);
1096 r.ru_minflt = current->min_flt;
1097 r.ru_majflt = current->maj_flt;
1099 case RUSAGE_CHILDREN:
1100 utime_jiffies = nsecs_to_jiffies(current->signal->cutime);
1101 stime_jiffies = nsecs_to_jiffies(current->signal->cstime);
1102 jiffies_to_timeval32(utime_jiffies, &r.ru_utime);
1103 jiffies_to_timeval32(stime_jiffies, &r.ru_stime);
1104 r.ru_minflt = current->signal->cmin_flt;
1105 r.ru_majflt = current->signal->cmaj_flt;
1109 return copy_to_user(ru, &r, sizeof(r)) ? -EFAULT : 0;
1112 SYSCALL_DEFINE4(osf_wait4, pid_t, pid, int __user *, ustatus, int, options,
1113 struct rusage32 __user *, ur)
1116 long err = kernel_wait4(pid, ustatus, options, &r);
1121 if (put_tv_to_tv32(&ur->ru_utime, &r.ru_utime))
1123 if (put_tv_to_tv32(&ur->ru_stime, &r.ru_stime))
1125 if (copy_to_user(&ur->ru_maxrss, &r.ru_maxrss,
1126 sizeof(struct rusage32) - offsetof(struct rusage32, ru_maxrss)))
1132 * I don't know what the parameters are: the first one
1133 * seems to be a timeval pointer, and I suspect the second
1134 * one is the time remaining.. Ho humm.. No documentation.
1136 SYSCALL_DEFINE2(osf_usleep_thread, struct timeval32 __user *, sleep,
1137 struct timeval32 __user *, remain)
1139 struct timespec64 tmp;
1140 unsigned long ticks;
1142 if (get_tv32(&tmp, sleep))
1145 ticks = timespec64_to_jiffies(&tmp);
1147 ticks = schedule_timeout_interruptible(ticks);
1150 jiffies_to_timespec64(ticks, &tmp);
1151 if (put_tv32(remain, &tmp))
1162 unsigned int modes; /* mode selector */
1163 long offset; /* time offset (usec) */
1164 long freq; /* frequency offset (scaled ppm) */
1165 long maxerror; /* maximum error (usec) */
1166 long esterror; /* estimated error (usec) */
1167 int status; /* clock command/status */
1168 long constant; /* pll time constant */
1169 long precision; /* clock precision (usec) (read only) */
1170 long tolerance; /* clock frequency tolerance (ppm)
1173 struct timeval32 time; /* (read only) */
1174 long tick; /* (modified) usecs between clock ticks */
1176 long ppsfreq; /* pps frequency (scaled ppm) (ro) */
1177 long jitter; /* pps jitter (us) (ro) */
1178 int shift; /* interval duration (s) (shift) (ro) */
1179 long stabil; /* pps stability (scaled ppm) (ro) */
1180 long jitcnt; /* jitter limit exceeded (ro) */
1181 long calcnt; /* calibration intervals (ro) */
1182 long errcnt; /* calibration errors (ro) */
1183 long stbcnt; /* stability limit exceeded (ro) */
1185 int :32; int :32; int :32; int :32;
1186 int :32; int :32; int :32; int :32;
1187 int :32; int :32; int :32; int :32;
1190 SYSCALL_DEFINE1(old_adjtimex, struct timex32 __user *, txc_p)
1192 struct __kernel_timex txc;
1195 /* copy relevant bits of struct timex. */
1196 if (copy_from_user(&txc, txc_p, offsetof(struct timex32, time)) ||
1197 copy_from_user(&txc.tick, &txc_p->tick, sizeof(struct timex32) -
1198 offsetof(struct timex32, tick)))
1201 ret = do_adjtimex(&txc);
1205 /* copy back to timex32 */
1206 if (copy_to_user(txc_p, &txc, offsetof(struct timex32, time)) ||
1207 (copy_to_user(&txc_p->tick, &txc.tick, sizeof(struct timex32) -
1208 offsetof(struct timex32, tick))) ||
1209 (put_user(txc.time.tv_sec, &txc_p->time.tv_sec)) ||
1210 (put_user(txc.time.tv_usec, &txc_p->time.tv_usec)))
1216 /* Get an address range which is currently unmapped. Similar to the
1217 generic version except that we know how to honor ADDR_LIMIT_32BIT. */
1219 static unsigned long
1220 arch_get_unmapped_area_1(unsigned long addr, unsigned long len,
1221 unsigned long limit)
1223 struct vm_unmapped_area_info info;
1227 info.low_limit = addr;
1228 info.high_limit = limit;
1229 info.align_mask = 0;
1230 info.align_offset = 0;
1231 return vm_unmapped_area(&info);
1235 arch_get_unmapped_area(struct file *filp, unsigned long addr,
1236 unsigned long len, unsigned long pgoff,
1237 unsigned long flags)
1239 unsigned long limit;
1241 /* "32 bit" actually means 31 bit, since pointers sign extend. */
1242 if (current->personality & ADDR_LIMIT_32BIT)
1250 if (flags & MAP_FIXED)
1253 /* First, see if the given suggestion fits.
1255 The OSF/1 loader (/sbin/loader) relies on us returning an
1256 address larger than the requested if one exists, which is
1257 a terribly broken way to program.
1259 That said, I can see the use in being able to suggest not
1260 merely specific addresses, but regions of memory -- perhaps
1261 this feature should be incorporated into all ports? */
1264 addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit);
1265 if (addr != (unsigned long) -ENOMEM)
1269 /* Next, try allocating at TASK_UNMAPPED_BASE. */
1270 addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE),
1272 if (addr != (unsigned long) -ENOMEM)
1275 /* Finally, try allocating in low memory. */
1276 addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit);
1281 SYSCALL_DEFINE2(osf_getpriority, int, which, int, who)
1283 int prio = sys_getpriority(which, who);
1285 /* Return value is the unbiased priority, i.e. 20 - prio.
1286 This does result in negative return values, so signal
1288 force_successful_syscall_return();
1294 SYSCALL_DEFINE0(getxuid)
1296 current_pt_regs()->r20 = sys_geteuid();
1297 return sys_getuid();
1300 SYSCALL_DEFINE0(getxgid)
1302 current_pt_regs()->r20 = sys_getegid();
1303 return sys_getgid();
1306 SYSCALL_DEFINE0(getxpid)
1308 current_pt_regs()->r20 = sys_getppid();
1309 return sys_getpid();
1312 SYSCALL_DEFINE0(alpha_pipe)
1315 int res = do_pipe_flags(fd, 0);
1317 /* The return values are in $0 and $20. */
1318 current_pt_regs()->r20 = fd[1];
1324 SYSCALL_DEFINE1(sethae, unsigned long, val)
1326 current_pt_regs()->hae = val;