| /* |
| * linux/arch/alpha/kernel/osf_sys.c |
| * |
| * Copyright (C) 1995 Linus Torvalds |
| */ |
| |
| /* |
| * This file handles some of the stranger OSF/1 system call interfaces. |
| * Some of the system calls expect a non-C calling standard, others have |
| * special parameter blocks.. |
| */ |
| |
| #include <linux/errno.h> |
| #include <linux/sched.h> |
| #include <linux/kernel.h> |
| #include <linux/mm.h> |
| #include <linux/smp.h> |
| #include <linux/stddef.h> |
| #include <linux/syscalls.h> |
| #include <linux/unistd.h> |
| #include <linux/ptrace.h> |
| #include <linux/user.h> |
| #include <linux/utsname.h> |
| #include <linux/time.h> |
| #include <linux/timex.h> |
| #include <linux/major.h> |
| #include <linux/stat.h> |
| #include <linux/mman.h> |
| #include <linux/shm.h> |
| #include <linux/poll.h> |
| #include <linux/file.h> |
| #include <linux/types.h> |
| #include <linux/ipc.h> |
| #include <linux/namei.h> |
| #include <linux/uio.h> |
| #include <linux/vfs.h> |
| #include <linux/rcupdate.h> |
| #include <linux/slab.h> |
| |
| #include <asm/fpu.h> |
| #include <asm/io.h> |
| #include <asm/uaccess.h> |
| #include <asm/sysinfo.h> |
| #include <asm/thread_info.h> |
| #include <asm/hwrpb.h> |
| #include <asm/processor.h> |
| |
| /* |
| * Brk needs to return an error. Still support Linux's brk(0) query idiom, |
| * which OSF programs just shouldn't be doing. We're still not quite |
| * identical to OSF as we don't return 0 on success, but doing otherwise |
| * would require changes to libc. Hopefully this is good enough. |
| */ |
| SYSCALL_DEFINE1(osf_brk, unsigned long, brk) |
| { |
| unsigned long retval = sys_brk(brk); |
| if (brk && brk != retval) |
| retval = -ENOMEM; |
| return retval; |
| } |
| |
| /* |
| * This is pure guess-work.. |
| */ |
| SYSCALL_DEFINE4(osf_set_program_attributes, unsigned long, text_start, |
| unsigned long, text_len, unsigned long, bss_start, |
| unsigned long, bss_len) |
| { |
| struct mm_struct *mm; |
| |
| mm = current->mm; |
| mm->end_code = bss_start + bss_len; |
| mm->start_brk = bss_start + bss_len; |
| mm->brk = bss_start + bss_len; |
| #if 0 |
| printk("set_program_attributes(%lx %lx %lx %lx)\n", |
| text_start, text_len, bss_start, bss_len); |
| #endif |
| return 0; |
| } |
| |
| /* |
| * OSF/1 directory handling functions... |
| * |
| * The "getdents()" interface is much more sane: the "basep" stuff is |
| * braindamage (it can't really handle filesystems where the directory |
| * offset differences aren't the same as "d_reclen"). |
| */ |
| #define NAME_OFFSET offsetof (struct osf_dirent, d_name) |
| |
| struct osf_dirent { |
| unsigned int d_ino; |
| unsigned short d_reclen; |
| unsigned short d_namlen; |
| char d_name[1]; |
| }; |
| |
| struct osf_dirent_callback { |
| struct dir_context ctx; |
| struct osf_dirent __user *dirent; |
| long __user *basep; |
| unsigned int count; |
| int error; |
| }; |
| |
| static int |
| osf_filldir(struct dir_context *ctx, const char *name, int namlen, |
| loff_t offset, u64 ino, unsigned int d_type) |
| { |
| struct osf_dirent __user *dirent; |
| struct osf_dirent_callback *buf = |
| container_of(ctx, struct osf_dirent_callback, ctx); |
| unsigned int reclen = ALIGN(NAME_OFFSET + namlen + 1, sizeof(u32)); |
| unsigned int d_ino; |
| |
| buf->error = -EINVAL; /* only used if we fail */ |
| if (reclen > buf->count) |
| return -EINVAL; |
| d_ino = ino; |
| if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) { |
| buf->error = -EOVERFLOW; |
| return -EOVERFLOW; |
| } |
| if (buf->basep) { |
| if (put_user(offset, buf->basep)) |
| goto Efault; |
| buf->basep = NULL; |
| } |
| dirent = buf->dirent; |
| if (put_user(d_ino, &dirent->d_ino) || |
| put_user(namlen, &dirent->d_namlen) || |
| put_user(reclen, &dirent->d_reclen) || |
| copy_to_user(dirent->d_name, name, namlen) || |
| put_user(0, dirent->d_name + namlen)) |
| goto Efault; |
| dirent = (void __user *)dirent + reclen; |
| buf->dirent = dirent; |
| buf->count -= reclen; |
| return 0; |
| Efault: |
| buf->error = -EFAULT; |
| return -EFAULT; |
| } |
| |
| SYSCALL_DEFINE4(osf_getdirentries, unsigned int, fd, |
| struct osf_dirent __user *, dirent, unsigned int, count, |
| long __user *, basep) |
| { |
| int error; |
| struct fd arg = fdget(fd); |
| struct osf_dirent_callback buf = { |
| .ctx.actor = osf_filldir, |
| .dirent = dirent, |
| .basep = basep, |
| .count = count |
| }; |
| |
| if (!arg.file) |
| return -EBADF; |
| |
| error = iterate_dir(arg.file, &buf.ctx); |
| if (error >= 0) |
| error = buf.error; |
| if (count != buf.count) |
| error = count - buf.count; |
| |
| fdput(arg); |
| return error; |
| } |
| |
| #undef NAME_OFFSET |
| |
| SYSCALL_DEFINE6(osf_mmap, unsigned long, addr, unsigned long, len, |
| unsigned long, prot, unsigned long, flags, unsigned long, fd, |
| unsigned long, off) |
| { |
| unsigned long ret = -EINVAL; |
| |
| #if 0 |
| if (flags & (_MAP_HASSEMAPHORE | _MAP_INHERIT | _MAP_UNALIGNED)) |
| printk("%s: unimplemented OSF mmap flags %04lx\n", |
| current->comm, flags); |
| #endif |
| if ((off + PAGE_ALIGN(len)) < off) |
| goto out; |
| if (off & ~PAGE_MASK) |
| goto out; |
| ret = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); |
| out: |
| return ret; |
| } |
| |
| struct osf_stat { |
| int st_dev; |
| int st_pad1; |
| unsigned st_mode; |
| unsigned short st_nlink; |
| short st_nlink_reserved; |
| unsigned st_uid; |
| unsigned st_gid; |
| int st_rdev; |
| int st_ldev; |
| long st_size; |
| int st_pad2; |
| int st_uatime; |
| int st_pad3; |
| int st_umtime; |
| int st_pad4; |
| int st_uctime; |
| int st_pad5; |
| int st_pad6; |
| unsigned st_flags; |
| unsigned st_gen; |
| long st_spare[4]; |
| unsigned st_ino; |
| int st_ino_reserved; |
| int st_atime; |
| int st_atime_reserved; |
| int st_mtime; |
| int st_mtime_reserved; |
| int st_ctime; |
| int st_ctime_reserved; |
| long st_blksize; |
| long st_blocks; |
| }; |
| |
| /* |
| * The OSF/1 statfs structure is much larger, but this should |
| * match the beginning, at least. |
| */ |
| struct osf_statfs { |
| short f_type; |
| short f_flags; |
| int f_fsize; |
| int f_bsize; |
| int f_blocks; |
| int f_bfree; |
| int f_bavail; |
| int f_files; |
| int f_ffree; |
| __kernel_fsid_t f_fsid; |
| }; |
| |
| struct osf_statfs64 { |
| short f_type; |
| short f_flags; |
| int f_pad1; |
| int f_pad2; |
| int f_pad3; |
| int f_pad4; |
| int f_pad5; |
| int f_pad6; |
| int f_pad7; |
| __kernel_fsid_t f_fsid; |
| u_short f_namemax; |
| short f_reserved1; |
| int f_spare[8]; |
| char f_pad8[90]; |
| char f_pad9[90]; |
| long mount_info[10]; |
| u_long f_flags2; |
| long f_spare2[14]; |
| long f_fsize; |
| long f_bsize; |
| long f_blocks; |
| long f_bfree; |
| long f_bavail; |
| long f_files; |
| long f_ffree; |
| }; |
| |
| static int |
| linux_to_osf_stat(struct kstat *lstat, struct osf_stat __user *osf_stat) |
| { |
| struct osf_stat tmp = { 0 }; |
| |
| tmp.st_dev = lstat->dev; |
| tmp.st_mode = lstat->mode; |
| tmp.st_nlink = lstat->nlink; |
| tmp.st_uid = from_kuid_munged(current_user_ns(), lstat->uid); |
| tmp.st_gid = from_kgid_munged(current_user_ns(), lstat->gid); |
| tmp.st_rdev = lstat->rdev; |
| tmp.st_ldev = lstat->rdev; |
| tmp.st_size = lstat->size; |
| tmp.st_uatime = lstat->atime.tv_nsec / 1000; |
| tmp.st_umtime = lstat->mtime.tv_nsec / 1000; |
| tmp.st_uctime = lstat->ctime.tv_nsec / 1000; |
| tmp.st_ino = lstat->ino; |
| tmp.st_atime = lstat->atime.tv_sec; |
| tmp.st_mtime = lstat->mtime.tv_sec; |
| tmp.st_ctime = lstat->ctime.tv_sec; |
| tmp.st_blksize = lstat->blksize; |
| tmp.st_blocks = lstat->blocks; |
| |
| return copy_to_user(osf_stat, &tmp, sizeof(tmp)) ? -EFAULT : 0; |
| } |
| |
| static int |
| linux_to_osf_statfs(struct kstatfs *linux_stat, struct osf_statfs __user *osf_stat, |
| unsigned long bufsiz) |
| { |
| struct osf_statfs tmp_stat; |
| |
| tmp_stat.f_type = linux_stat->f_type; |
| tmp_stat.f_flags = 0; /* mount flags */ |
| tmp_stat.f_fsize = linux_stat->f_frsize; |
| tmp_stat.f_bsize = linux_stat->f_bsize; |
| tmp_stat.f_blocks = linux_stat->f_blocks; |
| tmp_stat.f_bfree = linux_stat->f_bfree; |
| tmp_stat.f_bavail = linux_stat->f_bavail; |
| tmp_stat.f_files = linux_stat->f_files; |
| tmp_stat.f_ffree = linux_stat->f_ffree; |
| tmp_stat.f_fsid = linux_stat->f_fsid; |
| if (bufsiz > sizeof(tmp_stat)) |
| bufsiz = sizeof(tmp_stat); |
| return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0; |
| } |
| |
| static int |
| linux_to_osf_statfs64(struct kstatfs *linux_stat, struct osf_statfs64 __user *osf_stat, |
| unsigned long bufsiz) |
| { |
| struct osf_statfs64 tmp_stat = { 0 }; |
| |
| tmp_stat.f_type = linux_stat->f_type; |
| tmp_stat.f_fsize = linux_stat->f_frsize; |
| tmp_stat.f_bsize = linux_stat->f_bsize; |
| tmp_stat.f_blocks = linux_stat->f_blocks; |
| tmp_stat.f_bfree = linux_stat->f_bfree; |
| tmp_stat.f_bavail = linux_stat->f_bavail; |
| tmp_stat.f_files = linux_stat->f_files; |
| tmp_stat.f_ffree = linux_stat->f_ffree; |
| tmp_stat.f_fsid = linux_stat->f_fsid; |
| if (bufsiz > sizeof(tmp_stat)) |
| bufsiz = sizeof(tmp_stat); |
| return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0; |
| } |
| |
| SYSCALL_DEFINE3(osf_statfs, const char __user *, pathname, |
| struct osf_statfs __user *, buffer, unsigned long, bufsiz) |
| { |
| struct kstatfs linux_stat; |
| int error = user_statfs(pathname, &linux_stat); |
| if (!error) |
| error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz); |
| return error; |
| } |
| |
| SYSCALL_DEFINE2(osf_stat, char __user *, name, struct osf_stat __user *, buf) |
| { |
| struct kstat stat; |
| int error; |
| |
| error = vfs_stat(name, &stat); |
| if (error) |
| return error; |
| |
| return linux_to_osf_stat(&stat, buf); |
| } |
| |
| SYSCALL_DEFINE2(osf_lstat, char __user *, name, struct osf_stat __user *, buf) |
| { |
| struct kstat stat; |
| int error; |
| |
| error = vfs_lstat(name, &stat); |
| if (error) |
| return error; |
| |
| return linux_to_osf_stat(&stat, buf); |
| } |
| |
| SYSCALL_DEFINE2(osf_fstat, int, fd, struct osf_stat __user *, buf) |
| { |
| struct kstat stat; |
| int error; |
| |
| error = vfs_fstat(fd, &stat); |
| if (error) |
| return error; |
| |
| return linux_to_osf_stat(&stat, buf); |
| } |
| |
| SYSCALL_DEFINE3(osf_fstatfs, unsigned long, fd, |
| struct osf_statfs __user *, buffer, unsigned long, bufsiz) |
| { |
| struct kstatfs linux_stat; |
| int error = fd_statfs(fd, &linux_stat); |
| if (!error) |
| error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz); |
| return error; |
| } |
| |
| SYSCALL_DEFINE3(osf_statfs64, char __user *, pathname, |
| struct osf_statfs64 __user *, buffer, unsigned long, bufsiz) |
| { |
| struct kstatfs linux_stat; |
| int error = user_statfs(pathname, &linux_stat); |
| if (!error) |
| error = linux_to_osf_statfs64(&linux_stat, buffer, bufsiz); |
| return error; |
| } |
| |
| SYSCALL_DEFINE3(osf_fstatfs64, unsigned long, fd, |
| struct osf_statfs64 __user *, buffer, unsigned long, bufsiz) |
| { |
| struct kstatfs linux_stat; |
| int error = fd_statfs(fd, &linux_stat); |
| if (!error) |
| error = linux_to_osf_statfs64(&linux_stat, buffer, bufsiz); |
| return error; |
| } |
| |
| /* |
| * Uhh.. OSF/1 mount parameters aren't exactly obvious.. |
| * |
| * Although to be frank, neither are the native Linux/i386 ones.. |
| */ |
| struct ufs_args { |
| char __user *devname; |
| int flags; |
| uid_t exroot; |
| }; |
| |
| struct cdfs_args { |
| char __user *devname; |
| int flags; |
| uid_t exroot; |
| |
| /* This has lots more here, which Linux handles with the option block |
| but I'm too lazy to do the translation into ASCII. */ |
| }; |
| |
| struct procfs_args { |
| char __user *devname; |
| int flags; |
| uid_t exroot; |
| }; |
| |
| /* |
| * We can't actually handle ufs yet, so we translate UFS mounts to |
| * ext2fs mounts. I wouldn't mind a UFS filesystem, but the UFS |
| * layout is so braindead it's a major headache doing it. |
| * |
| * Just how long ago was it written? OTOH our UFS driver may be still |
| * unhappy with OSF UFS. [CHECKME] |
| */ |
| static int |
| osf_ufs_mount(const char __user *dirname, |
| struct ufs_args __user *args, int flags) |
| { |
| int retval; |
| struct cdfs_args tmp; |
| struct filename *devname; |
| |
| retval = -EFAULT; |
| if (copy_from_user(&tmp, args, sizeof(tmp))) |
| goto out; |
| devname = getname(tmp.devname); |
| retval = PTR_ERR(devname); |
| if (IS_ERR(devname)) |
| goto out; |
| retval = do_mount(devname->name, dirname, "ext2", flags, NULL); |
| putname(devname); |
| out: |
| return retval; |
| } |
| |
| static int |
| osf_cdfs_mount(const char __user *dirname, |
| struct cdfs_args __user *args, int flags) |
| { |
| int retval; |
| struct cdfs_args tmp; |
| struct filename *devname; |
| |
| retval = -EFAULT; |
| if (copy_from_user(&tmp, args, sizeof(tmp))) |
| goto out; |
| devname = getname(tmp.devname); |
| retval = PTR_ERR(devname); |
| if (IS_ERR(devname)) |
| goto out; |
| retval = do_mount(devname->name, dirname, "iso9660", flags, NULL); |
| putname(devname); |
| out: |
| return retval; |
| } |
| |
| static int |
| osf_procfs_mount(const char __user *dirname, |
| struct procfs_args __user *args, int flags) |
| { |
| struct procfs_args tmp; |
| |
| if (copy_from_user(&tmp, args, sizeof(tmp))) |
| return -EFAULT; |
| |
| return do_mount("", dirname, "proc", flags, NULL); |
| } |
| |
| SYSCALL_DEFINE4(osf_mount, unsigned long, typenr, const char __user *, path, |
| int, flag, void __user *, data) |
| { |
| int retval; |
| |
| switch (typenr) { |
| case 1: |
| retval = osf_ufs_mount(path, data, flag); |
| break; |
| case 6: |
| retval = osf_cdfs_mount(path, data, flag); |
| break; |
| case 9: |
| retval = osf_procfs_mount(path, data, flag); |
| break; |
| default: |
| retval = -EINVAL; |
| printk("osf_mount(%ld, %x)\n", typenr, flag); |
| } |
| |
| return retval; |
| } |
| |
| SYSCALL_DEFINE1(osf_utsname, char __user *, name) |
| { |
| int error; |
| |
| down_read(&uts_sem); |
| error = -EFAULT; |
| if (copy_to_user(name + 0, utsname()->sysname, 32)) |
| goto out; |
| if (copy_to_user(name + 32, utsname()->nodename, 32)) |
| goto out; |
| if (copy_to_user(name + 64, utsname()->release, 32)) |
| goto out; |
| if (copy_to_user(name + 96, utsname()->version, 32)) |
| goto out; |
| if (copy_to_user(name + 128, utsname()->machine, 32)) |
| goto out; |
| |
| error = 0; |
| out: |
| up_read(&uts_sem); |
| return error; |
| } |
| |
| SYSCALL_DEFINE0(getpagesize) |
| { |
| return PAGE_SIZE; |
| } |
| |
| SYSCALL_DEFINE0(getdtablesize) |
| { |
| return sysctl_nr_open; |
| } |
| |
| /* |
| * For compatibility with OSF/1 only. Use utsname(2) instead. |
| */ |
| SYSCALL_DEFINE2(osf_getdomainname, char __user *, name, int, namelen) |
| { |
| unsigned len; |
| int i; |
| |
| if (!access_ok(VERIFY_WRITE, name, namelen)) |
| return -EFAULT; |
| |
| len = namelen; |
| if (len > 32) |
| len = 32; |
| |
| down_read(&uts_sem); |
| for (i = 0; i < len; ++i) { |
| __put_user(utsname()->domainname[i], name + i); |
| if (utsname()->domainname[i] == '\0') |
| break; |
| } |
| up_read(&uts_sem); |
| |
| return 0; |
| } |
| |
| /* |
| * The following stuff should move into a header file should it ever |
| * be labeled "officially supported." Right now, there is just enough |
| * support to avoid applications (such as tar) printing error |
| * messages. The attributes are not really implemented. |
| */ |
| |
| /* |
| * Values for Property list entry flag |
| */ |
| #define PLE_PROPAGATE_ON_COPY 0x1 /* cp(1) will copy entry |
| by default */ |
| #define PLE_FLAG_MASK 0x1 /* Valid flag values */ |
| #define PLE_FLAG_ALL -1 /* All flag value */ |
| |
| struct proplistname_args { |
| unsigned int pl_mask; |
| unsigned int pl_numnames; |
| char **pl_names; |
| }; |
| |
| union pl_args { |
| struct setargs { |
| char __user *path; |
| long follow; |
| long nbytes; |
| char __user *buf; |
| } set; |
| struct fsetargs { |
| long fd; |
| long nbytes; |
| char __user *buf; |
| } fset; |
| struct getargs { |
| char __user *path; |
| long follow; |
| struct proplistname_args __user *name_args; |
| long nbytes; |
| char __user *buf; |
| int __user *min_buf_size; |
| } get; |
| struct fgetargs { |
| long fd; |
| struct proplistname_args __user *name_args; |
| long nbytes; |
| char __user *buf; |
| int __user *min_buf_size; |
| } fget; |
| struct delargs { |
| char __user *path; |
| long follow; |
| struct proplistname_args __user *name_args; |
| } del; |
| struct fdelargs { |
| long fd; |
| struct proplistname_args __user *name_args; |
| } fdel; |
| }; |
| |
| enum pl_code { |
| PL_SET = 1, PL_FSET = 2, |
| PL_GET = 3, PL_FGET = 4, |
| PL_DEL = 5, PL_FDEL = 6 |
| }; |
| |
| SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code, |
| union pl_args __user *, args) |
| { |
| long error; |
| int __user *min_buf_size_ptr; |
| |
| switch (code) { |
| case PL_SET: |
| if (get_user(error, &args->set.nbytes)) |
| error = -EFAULT; |
| break; |
| case PL_FSET: |
| if (get_user(error, &args->fset.nbytes)) |
| error = -EFAULT; |
| break; |
| case PL_GET: |
| error = get_user(min_buf_size_ptr, &args->get.min_buf_size); |
| if (error) |
| break; |
| error = put_user(0, min_buf_size_ptr); |
| break; |
| case PL_FGET: |
| error = get_user(min_buf_size_ptr, &args->fget.min_buf_size); |
| if (error) |
| break; |
| error = put_user(0, min_buf_size_ptr); |
| break; |
| case PL_DEL: |
| case PL_FDEL: |
| error = 0; |
| break; |
| default: |
| error = -EOPNOTSUPP; |
| break; |
| }; |
| return error; |
| } |
| |
| SYSCALL_DEFINE2(osf_sigstack, struct sigstack __user *, uss, |
| struct sigstack __user *, uoss) |
| { |
| unsigned long usp = rdusp(); |
| unsigned long oss_sp = current->sas_ss_sp + current->sas_ss_size; |
| unsigned long oss_os = on_sig_stack(usp); |
| int error; |
| |
| if (uss) { |
| void __user *ss_sp; |
| |
| error = -EFAULT; |
| if (get_user(ss_sp, &uss->ss_sp)) |
| goto out; |
| |
| /* If the current stack was set with sigaltstack, don't |
| swap stacks while we are on it. */ |
| error = -EPERM; |
| if (current->sas_ss_sp && on_sig_stack(usp)) |
| goto out; |
| |
| /* Since we don't know the extent of the stack, and we don't |
| track onstack-ness, but rather calculate it, we must |
| presume a size. Ho hum this interface is lossy. */ |
| current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ; |
| current->sas_ss_size = SIGSTKSZ; |
| } |
| |
| if (uoss) { |
| error = -EFAULT; |
| if (! access_ok(VERIFY_WRITE, uoss, sizeof(*uoss)) |
| || __put_user(oss_sp, &uoss->ss_sp) |
| || __put_user(oss_os, &uoss->ss_onstack)) |
| goto out; |
| } |
| |
| error = 0; |
| out: |
| return error; |
| } |
| |
| SYSCALL_DEFINE3(osf_sysinfo, int, command, char __user *, buf, long, count) |
| { |
| const char *sysinfo_table[] = { |
| utsname()->sysname, |
| utsname()->nodename, |
| utsname()->release, |
| utsname()->version, |
| utsname()->machine, |
| "alpha", /* instruction set architecture */ |
| "dummy", /* hardware serial number */ |
| "dummy", /* hardware manufacturer */ |
| "dummy", /* secure RPC domain */ |
| }; |
| unsigned long offset; |
| const char *res; |
| long len, err = -EINVAL; |
| |
| offset = command-1; |
| if (offset >= ARRAY_SIZE(sysinfo_table)) { |
| /* Digital UNIX has a few unpublished interfaces here */ |
| printk("sysinfo(%d)", command); |
| goto out; |
| } |
| |
| down_read(&uts_sem); |
| res = sysinfo_table[offset]; |
| len = strlen(res)+1; |
| if ((unsigned long)len > (unsigned long)count) |
| len = count; |
| if (copy_to_user(buf, res, len)) |
| err = -EFAULT; |
| else |
| err = 0; |
| up_read(&uts_sem); |
| out: |
| return err; |
| } |
| |
| SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer, |
| unsigned long, nbytes, int __user *, start, void __user *, arg) |
| { |
| unsigned long w; |
| struct percpu_struct *cpu; |
| |
| switch (op) { |
| case GSI_IEEE_FP_CONTROL: |
| /* Return current software fp control & status bits. */ |
| /* Note that DU doesn't verify available space here. */ |
| |
| w = current_thread_info()->ieee_state & IEEE_SW_MASK; |
| w = swcr_update_status(w, rdfpcr()); |
| if (put_user(w, (unsigned long __user *) buffer)) |
| return -EFAULT; |
| return 0; |
| |
| case GSI_IEEE_STATE_AT_SIGNAL: |
| /* |
| * Not sure anybody will ever use this weird stuff. These |
| * ops can be used (under OSF/1) to set the fpcr that should |
| * be used when a signal handler starts executing. |
| */ |
| break; |
| |
| case GSI_UACPROC: |
| if (nbytes < sizeof(unsigned int)) |
| return -EINVAL; |
| w = current_thread_info()->status & UAC_BITMASK; |
| if (put_user(w, (unsigned int __user *)buffer)) |
| return -EFAULT; |
| return 1; |
| |
| case GSI_PROC_TYPE: |
| if (nbytes < sizeof(unsigned long)) |
| return -EINVAL; |
| cpu = (struct percpu_struct*) |
| ((char*)hwrpb + hwrpb->processor_offset); |
| w = cpu->type; |
| if (put_user(w, (unsigned long __user*)buffer)) |
| return -EFAULT; |
| return 1; |
| |
| case GSI_GET_HWRPB: |
| if (nbytes > sizeof(*hwrpb)) |
| return -EINVAL; |
| if (copy_to_user(buffer, hwrpb, nbytes) != 0) |
| return -EFAULT; |
| return 1; |
| |
| default: |
| break; |
| } |
| |
| return -EOPNOTSUPP; |
| } |
| |
| SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer, |
| unsigned long, nbytes, int __user *, start, void __user *, arg) |
| { |
| switch (op) { |
| case SSI_IEEE_FP_CONTROL: { |
| unsigned long swcr, fpcr; |
| unsigned int *state; |
| |
| /* |
| * Alpha Architecture Handbook 4.7.7.3: |
| * To be fully IEEE compiant, we must track the current IEEE |
| * exception state in software, because spurious bits can be |
| * set in the trap shadow of a software-complete insn. |
| */ |
| |
| if (get_user(swcr, (unsigned long __user *)buffer)) |
| return -EFAULT; |
| state = ¤t_thread_info()->ieee_state; |
| |
| /* Update softare trap enable bits. */ |
| *state = (*state & ~IEEE_SW_MASK) | (swcr & IEEE_SW_MASK); |
| |
| /* Update the real fpcr. */ |
| fpcr = rdfpcr() & FPCR_DYN_MASK; |
| fpcr |= ieee_swcr_to_fpcr(swcr); |
| wrfpcr(fpcr); |
| |
| return 0; |
| } |
| |
| case SSI_IEEE_RAISE_EXCEPTION: { |
| unsigned long exc, swcr, fpcr, fex; |
| unsigned int *state; |
| |
| if (get_user(exc, (unsigned long __user *)buffer)) |
| return -EFAULT; |
| state = ¤t_thread_info()->ieee_state; |
| exc &= IEEE_STATUS_MASK; |
| |
| /* Update softare trap enable bits. */ |
| swcr = (*state & IEEE_SW_MASK) | exc; |
| *state |= exc; |
| |
| /* Update the real fpcr. */ |
| fpcr = rdfpcr(); |
| fpcr |= ieee_swcr_to_fpcr(swcr); |
| wrfpcr(fpcr); |
| |
| /* If any exceptions set by this call, and are unmasked, |
| send a signal. Old exceptions are not signaled. */ |
| fex = (exc >> IEEE_STATUS_TO_EXCSUM_SHIFT) & swcr; |
| if (fex) { |
| siginfo_t info; |
| int si_code = 0; |
| |
| if (fex & IEEE_TRAP_ENABLE_DNO) si_code = FPE_FLTUND; |
| if (fex & IEEE_TRAP_ENABLE_INE) si_code = FPE_FLTRES; |
| if (fex & IEEE_TRAP_ENABLE_UNF) si_code = FPE_FLTUND; |
| if (fex & IEEE_TRAP_ENABLE_OVF) si_code = FPE_FLTOVF; |
| if (fex & IEEE_TRAP_ENABLE_DZE) si_code = FPE_FLTDIV; |
| if (fex & IEEE_TRAP_ENABLE_INV) si_code = FPE_FLTINV; |
| |
| info.si_signo = SIGFPE; |
| info.si_errno = 0; |
| info.si_code = si_code; |
| info.si_addr = NULL; /* FIXME */ |
| send_sig_info(SIGFPE, &info, current); |
| } |
| return 0; |
| } |
| |
| case SSI_IEEE_STATE_AT_SIGNAL: |
| case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: |
| /* |
| * Not sure anybody will ever use this weird stuff. These |
| * ops can be used (under OSF/1) to set the fpcr that should |
| * be used when a signal handler starts executing. |
| */ |
| break; |
| |
| case SSI_NVPAIRS: { |
| unsigned __user *p = buffer; |
| unsigned i; |
| |
| for (i = 0, p = buffer; i < nbytes; ++i, p += 2) { |
| unsigned v, w, status; |
| |
| if (get_user(v, p) || get_user(w, p + 1)) |
| return -EFAULT; |
| switch (v) { |
| case SSIN_UACPROC: |
| w &= UAC_BITMASK; |
| status = current_thread_info()->status; |
| status = (status & ~UAC_BITMASK) | w; |
| current_thread_info()->status = status; |
| break; |
| |
| default: |
| return -EOPNOTSUPP; |
| } |
| } |
| return 0; |
| } |
| |
| case SSI_LMF: |
| return 0; |
| |
| default: |
| break; |
| } |
| |
| return -EOPNOTSUPP; |
| } |
| |
| /* Translations due to the fact that OSF's time_t is an int. Which |
| affects all sorts of things, like timeval and itimerval. */ |
| |
| extern struct timezone sys_tz; |
| |
| struct timeval32 |
| { |
| int tv_sec, tv_usec; |
| }; |
| |
| struct itimerval32 |
| { |
| struct timeval32 it_interval; |
| struct timeval32 it_value; |
| }; |
| |
| static inline long |
| get_tv32(struct timeval *o, struct timeval32 __user *i) |
| { |
| return (!access_ok(VERIFY_READ, i, sizeof(*i)) || |
| (__get_user(o->tv_sec, &i->tv_sec) | |
| __get_user(o->tv_usec, &i->tv_usec))); |
| } |
| |
| static inline long |
| put_tv32(struct timeval32 __user *o, struct timeval *i) |
| { |
| return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || |
| (__put_user(i->tv_sec, &o->tv_sec) | |
| __put_user(i->tv_usec, &o->tv_usec))); |
| } |
| |
| static inline long |
| get_it32(struct itimerval *o, struct itimerval32 __user *i) |
| { |
| return (!access_ok(VERIFY_READ, i, sizeof(*i)) || |
| (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) | |
| __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) | |
| __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) | |
| __get_user(o->it_value.tv_usec, &i->it_value.tv_usec))); |
| } |
| |
| static inline long |
| put_it32(struct itimerval32 __user *o, struct itimerval *i) |
| { |
| return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || |
| (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) | |
| __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) | |
| __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) | |
| __put_user(i->it_value.tv_usec, &o->it_value.tv_usec))); |
| } |
| |
| static inline void |
| jiffies_to_timeval32(unsigned long jiffies, struct timeval32 *value) |
| { |
| value->tv_usec = (jiffies % HZ) * (1000000L / HZ); |
| value->tv_sec = jiffies / HZ; |
| } |
| |
| SYSCALL_DEFINE2(osf_gettimeofday, struct timeval32 __user *, tv, |
| struct timezone __user *, tz) |
| { |
| if (tv) { |
| struct timeval ktv; |
| do_gettimeofday(&ktv); |
| if (put_tv32(tv, &ktv)) |
| return -EFAULT; |
| } |
| if (tz) { |
| if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) |
| return -EFAULT; |
| } |
| return 0; |
| } |
| |
| SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv, |
| struct timezone __user *, tz) |
| { |
| struct timespec kts; |
| struct timezone ktz; |
| |
| if (tv) { |
| if (get_tv32((struct timeval *)&kts, tv)) |
| return -EFAULT; |
| kts.tv_nsec *= 1000; |
| } |
| if (tz) { |
| if (copy_from_user(&ktz, tz, sizeof(*tz))) |
| return -EFAULT; |
| } |
| |
| return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); |
| } |
| |
| SYSCALL_DEFINE2(osf_getitimer, int, which, struct itimerval32 __user *, it) |
| { |
| struct itimerval kit; |
| int error; |
| |
| error = do_getitimer(which, &kit); |
| if (!error && put_it32(it, &kit)) |
| error = -EFAULT; |
| |
| return error; |
| } |
| |
| SYSCALL_DEFINE3(osf_setitimer, int, which, struct itimerval32 __user *, in, |
| struct itimerval32 __user *, out) |
| { |
| struct itimerval kin, kout; |
| int error; |
| |
| if (in) { |
| if (get_it32(&kin, in)) |
| return -EFAULT; |
| } else |
| memset(&kin, 0, sizeof(kin)); |
| |
| error = do_setitimer(which, &kin, out ? &kout : NULL); |
| if (error || !out) |
| return error; |
| |
| if (put_it32(out, &kout)) |
| return -EFAULT; |
| |
| return 0; |
| |
| } |
| |
| SYSCALL_DEFINE2(osf_utimes, const char __user *, filename, |
| struct timeval32 __user *, tvs) |
| { |
| struct timespec tv[2]; |
| |
| if (tvs) { |
| struct timeval ktvs[2]; |
| if (get_tv32(&ktvs[0], &tvs[0]) || |
| get_tv32(&ktvs[1], &tvs[1])) |
| return -EFAULT; |
| |
| if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 || |
| ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000) |
| return -EINVAL; |
| |
| tv[0].tv_sec = ktvs[0].tv_sec; |
| tv[0].tv_nsec = 1000 * ktvs[0].tv_usec; |
| tv[1].tv_sec = ktvs[1].tv_sec; |
| tv[1].tv_nsec = 1000 * ktvs[1].tv_usec; |
| } |
| |
| return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0); |
| } |
| |
| SYSCALL_DEFINE5(osf_select, int, n, fd_set __user *, inp, fd_set __user *, outp, |
| fd_set __user *, exp, struct timeval32 __user *, tvp) |
| { |
| struct timespec end_time, *to = NULL; |
| if (tvp) { |
| time_t sec, usec; |
| |
| to = &end_time; |
| |
| if (!access_ok(VERIFY_READ, tvp, sizeof(*tvp)) |
| || __get_user(sec, &tvp->tv_sec) |
| || __get_user(usec, &tvp->tv_usec)) { |
| return -EFAULT; |
| } |
| |
| if (sec < 0 || usec < 0) |
| return -EINVAL; |
| |
| if (poll_select_set_timeout(to, sec, usec * NSEC_PER_USEC)) |
| return -EINVAL; |
| |
| } |
| |
| /* OSF does not copy back the remaining time. */ |
| return core_sys_select(n, inp, outp, exp, to); |
| } |
| |
| struct rusage32 { |
| struct timeval32 ru_utime; /* user time used */ |
| struct timeval32 ru_stime; /* system time used */ |
| long ru_maxrss; /* maximum resident set size */ |
| long ru_ixrss; /* integral shared memory size */ |
| long ru_idrss; /* integral unshared data size */ |
| long ru_isrss; /* integral unshared stack size */ |
| long ru_minflt; /* page reclaims */ |
| long ru_majflt; /* page faults */ |
| long ru_nswap; /* swaps */ |
| long ru_inblock; /* block input operations */ |
| long ru_oublock; /* block output operations */ |
| long ru_msgsnd; /* messages sent */ |
| long ru_msgrcv; /* messages received */ |
| long ru_nsignals; /* signals received */ |
| long ru_nvcsw; /* voluntary context switches */ |
| long ru_nivcsw; /* involuntary " */ |
| }; |
| |
| SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru) |
| { |
| struct rusage32 r; |
| cputime_t utime, stime; |
| |
| if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN) |
| return -EINVAL; |
| |
| memset(&r, 0, sizeof(r)); |
| switch (who) { |
| case RUSAGE_SELF: |
| task_cputime(current, &utime, &stime); |
| jiffies_to_timeval32(utime, &r.ru_utime); |
| jiffies_to_timeval32(stime, &r.ru_stime); |
| r.ru_minflt = current->min_flt; |
| r.ru_majflt = current->maj_flt; |
| break; |
| case RUSAGE_CHILDREN: |
| jiffies_to_timeval32(current->signal->cutime, &r.ru_utime); |
| jiffies_to_timeval32(current->signal->cstime, &r.ru_stime); |
| r.ru_minflt = current->signal->cmin_flt; |
| r.ru_majflt = current->signal->cmaj_flt; |
| break; |
| } |
| |
| return copy_to_user(ru, &r, sizeof(r)) ? -EFAULT : 0; |
| } |
| |
| SYSCALL_DEFINE4(osf_wait4, pid_t, pid, int __user *, ustatus, int, options, |
| struct rusage32 __user *, ur) |
| { |
| struct rusage r; |
| long ret, err; |
| unsigned int status = 0; |
| mm_segment_t old_fs; |
| |
| if (!ur) |
| return sys_wait4(pid, ustatus, options, NULL); |
| |
| old_fs = get_fs(); |
| |
| set_fs (KERNEL_DS); |
| ret = sys_wait4(pid, (unsigned int __user *) &status, options, |
| (struct rusage __user *) &r); |
| set_fs (old_fs); |
| |
| if (!access_ok(VERIFY_WRITE, ur, sizeof(*ur))) |
| return -EFAULT; |
| |
| err = 0; |
| err |= put_user(status, ustatus); |
| err |= __put_user(r.ru_utime.tv_sec, &ur->ru_utime.tv_sec); |
| err |= __put_user(r.ru_utime.tv_usec, &ur->ru_utime.tv_usec); |
| err |= __put_user(r.ru_stime.tv_sec, &ur->ru_stime.tv_sec); |
| err |= __put_user(r.ru_stime.tv_usec, &ur->ru_stime.tv_usec); |
| err |= __put_user(r.ru_maxrss, &ur->ru_maxrss); |
| err |= __put_user(r.ru_ixrss, &ur->ru_ixrss); |
| err |= __put_user(r.ru_idrss, &ur->ru_idrss); |
| err |= __put_user(r.ru_isrss, &ur->ru_isrss); |
| err |= __put_user(r.ru_minflt, &ur->ru_minflt); |
| err |= __put_user(r.ru_majflt, &ur->ru_majflt); |
| err |= __put_user(r.ru_nswap, &ur->ru_nswap); |
| err |= __put_user(r.ru_inblock, &ur->ru_inblock); |
| err |= __put_user(r.ru_oublock, &ur->ru_oublock); |
| err |= __put_user(r.ru_msgsnd, &ur->ru_msgsnd); |
| err |= __put_user(r.ru_msgrcv, &ur->ru_msgrcv); |
| err |= __put_user(r.ru_nsignals, &ur->ru_nsignals); |
| err |= __put_user(r.ru_nvcsw, &ur->ru_nvcsw); |
| err |= __put_user(r.ru_nivcsw, &ur->ru_nivcsw); |
| |
| return err ? err : ret; |
| } |
| |
| /* |
| * I don't know what the parameters are: the first one |
| * seems to be a timeval pointer, and I suspect the second |
| * one is the time remaining.. Ho humm.. No documentation. |
| */ |
| SYSCALL_DEFINE2(osf_usleep_thread, struct timeval32 __user *, sleep, |
| struct timeval32 __user *, remain) |
| { |
| struct timeval tmp; |
| unsigned long ticks; |
| |
| if (get_tv32(&tmp, sleep)) |
| goto fault; |
| |
| ticks = timeval_to_jiffies(&tmp); |
| |
| ticks = schedule_timeout_interruptible(ticks); |
| |
| if (remain) { |
| jiffies_to_timeval(ticks, &tmp); |
| if (put_tv32(remain, &tmp)) |
| goto fault; |
| } |
| |
| return 0; |
| fault: |
| return -EFAULT; |
| } |
| |
| |
| struct timex32 { |
| unsigned int modes; /* mode selector */ |
| long offset; /* time offset (usec) */ |
| long freq; /* frequency offset (scaled ppm) */ |
| long maxerror; /* maximum error (usec) */ |
| long esterror; /* estimated error (usec) */ |
| int status; /* clock command/status */ |
| long constant; /* pll time constant */ |
| long precision; /* clock precision (usec) (read only) */ |
| long tolerance; /* clock frequency tolerance (ppm) |
| * (read only) |
| */ |
| struct timeval32 time; /* (read only) */ |
| long tick; /* (modified) usecs between clock ticks */ |
| |
| long ppsfreq; /* pps frequency (scaled ppm) (ro) */ |
| long jitter; /* pps jitter (us) (ro) */ |
| int shift; /* interval duration (s) (shift) (ro) */ |
| long stabil; /* pps stability (scaled ppm) (ro) */ |
| long jitcnt; /* jitter limit exceeded (ro) */ |
| long calcnt; /* calibration intervals (ro) */ |
| long errcnt; /* calibration errors (ro) */ |
| long stbcnt; /* stability limit exceeded (ro) */ |
| |
| int :32; int :32; int :32; int :32; |
| int :32; int :32; int :32; int :32; |
| int :32; int :32; int :32; int :32; |
| }; |
| |
| SYSCALL_DEFINE1(old_adjtimex, struct timex32 __user *, txc_p) |
| { |
| struct timex txc; |
| int ret; |
| |
| /* copy relevant bits of struct timex. */ |
| if (copy_from_user(&txc, txc_p, offsetof(struct timex32, time)) || |
| copy_from_user(&txc.tick, &txc_p->tick, sizeof(struct timex32) - |
| offsetof(struct timex32, time))) |
| return -EFAULT; |
| |
| ret = do_adjtimex(&txc); |
| if (ret < 0) |
| return ret; |
| |
| /* copy back to timex32 */ |
| if (copy_to_user(txc_p, &txc, offsetof(struct timex32, time)) || |
| (copy_to_user(&txc_p->tick, &txc.tick, sizeof(struct timex32) - |
| offsetof(struct timex32, tick))) || |
| (put_tv32(&txc_p->time, &txc.time))) |
| return -EFAULT; |
| |
| return ret; |
| } |
| |
| /* Get an address range which is currently unmapped. Similar to the |
| generic version except that we know how to honor ADDR_LIMIT_32BIT. */ |
| |
| static unsigned long |
| arch_get_unmapped_area_1(unsigned long addr, unsigned long len, |
| unsigned long limit) |
| { |
| struct vm_unmapped_area_info info; |
| |
| info.flags = 0; |
| info.length = len; |
| info.low_limit = addr; |
| info.high_limit = limit; |
| info.align_mask = 0; |
| info.align_offset = 0; |
| return vm_unmapped_area(&info); |
| } |
| |
| unsigned long |
| arch_get_unmapped_area(struct file *filp, unsigned long addr, |
| unsigned long len, unsigned long pgoff, |
| unsigned long flags) |
| { |
| unsigned long limit; |
| |
| /* "32 bit" actually means 31 bit, since pointers sign extend. */ |
| if (current->personality & ADDR_LIMIT_32BIT) |
| limit = 0x80000000; |
| else |
| limit = TASK_SIZE; |
| |
| if (len > limit) |
| return -ENOMEM; |
| |
| if (flags & MAP_FIXED) |
| return addr; |
| |
| /* First, see if the given suggestion fits. |
| |
| The OSF/1 loader (/sbin/loader) relies on us returning an |
| address larger than the requested if one exists, which is |
| a terribly broken way to program. |
| |
| That said, I can see the use in being able to suggest not |
| merely specific addresses, but regions of memory -- perhaps |
| this feature should be incorporated into all ports? */ |
| |
| if (addr) { |
| addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit); |
| if (addr != (unsigned long) -ENOMEM) |
| return addr; |
| } |
| |
| /* Next, try allocating at TASK_UNMAPPED_BASE. */ |
| addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE), |
| len, limit); |
| if (addr != (unsigned long) -ENOMEM) |
| return addr; |
| |
| /* Finally, try allocating in low memory. */ |
| addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit); |
| |
| return addr; |
| } |
| |
| #ifdef CONFIG_OSF4_COMPAT |
| |
| /* Clear top 32 bits of iov_len in the user's buffer for |
| compatibility with old versions of OSF/1 where iov_len |
| was defined as int. */ |
| static int |
| osf_fix_iov_len(const struct iovec __user *iov, unsigned long count) |
| { |
| unsigned long i; |
| |
| for (i = 0 ; i < count ; i++) { |
| int __user *iov_len_high = (int __user *)&iov[i].iov_len + 1; |
| |
| if (put_user(0, iov_len_high)) |
| return -EFAULT; |
| } |
| return 0; |
| } |
| |
| SYSCALL_DEFINE3(osf_readv, unsigned long, fd, |
| const struct iovec __user *, vector, unsigned long, count) |
| { |
| if (unlikely(personality(current->personality) == PER_OSF4)) |
| if (osf_fix_iov_len(vector, count)) |
| return -EFAULT; |
| return sys_readv(fd, vector, count); |
| } |
| |
| SYSCALL_DEFINE3(osf_writev, unsigned long, fd, |
| const struct iovec __user *, vector, unsigned long, count) |
| { |
| if (unlikely(personality(current->personality) == PER_OSF4)) |
| if (osf_fix_iov_len(vector, count)) |
| return -EFAULT; |
| return sys_writev(fd, vector, count); |
| } |
| |
| #endif |
| |
| SYSCALL_DEFINE2(osf_getpriority, int, which, int, who) |
| { |
| int prio = sys_getpriority(which, who); |
| if (prio >= 0) { |
| /* Return value is the unbiased priority, i.e. 20 - prio. |
| This does result in negative return values, so signal |
| no error */ |
| force_successful_syscall_return(); |
| prio = 20 - prio; |
| } |
| return prio; |
| } |
| |
| SYSCALL_DEFINE0(getxuid) |
| { |
| current_pt_regs()->r20 = sys_geteuid(); |
| return sys_getuid(); |
| } |
| |
| SYSCALL_DEFINE0(getxgid) |
| { |
| current_pt_regs()->r20 = sys_getegid(); |
| return sys_getgid(); |
| } |
| |
| SYSCALL_DEFINE0(getxpid) |
| { |
| current_pt_regs()->r20 = sys_getppid(); |
| return sys_getpid(); |
| } |
| |
| SYSCALL_DEFINE0(alpha_pipe) |
| { |
| int fd[2]; |
| int res = do_pipe_flags(fd, 0); |
| if (!res) { |
| /* The return values are in $0 and $20. */ |
| current_pt_regs()->r20 = fd[1]; |
| res = fd[0]; |
| } |
| return res; |
| } |
| |
| SYSCALL_DEFINE1(sethae, unsigned long, val) |
| { |
| current_pt_regs()->hae = val; |
| return 0; |
| } |