11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * linux/arch/alpha/kernel/osf_sys.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (C) 1995 Linus Torvalds 51da177e4SLinus Torvalds */ 61da177e4SLinus Torvalds 71da177e4SLinus Torvalds /* 81da177e4SLinus Torvalds * This file handles some of the stranger OSF/1 system call interfaces. 91da177e4SLinus Torvalds * Some of the system calls expect a non-C calling standard, others have 101da177e4SLinus Torvalds * special parameter blocks.. 111da177e4SLinus Torvalds */ 121da177e4SLinus Torvalds 131da177e4SLinus Torvalds #include <linux/errno.h> 141da177e4SLinus Torvalds #include <linux/sched.h> 151da177e4SLinus Torvalds #include <linux/kernel.h> 161da177e4SLinus Torvalds #include <linux/mm.h> 171da177e4SLinus Torvalds #include <linux/smp.h> 181da177e4SLinus Torvalds #include <linux/smp_lock.h> 191da177e4SLinus Torvalds #include <linux/stddef.h> 201da177e4SLinus Torvalds #include <linux/syscalls.h> 211da177e4SLinus Torvalds #include <linux/unistd.h> 221da177e4SLinus Torvalds #include <linux/ptrace.h> 231da177e4SLinus Torvalds #include <linux/slab.h> 241da177e4SLinus Torvalds #include <linux/user.h> 251da177e4SLinus Torvalds #include <linux/a.out.h> 261da177e4SLinus Torvalds #include <linux/utsname.h> 271da177e4SLinus Torvalds #include <linux/time.h> 281da177e4SLinus Torvalds #include <linux/timex.h> 291da177e4SLinus Torvalds #include <linux/major.h> 301da177e4SLinus Torvalds #include <linux/stat.h> 311da177e4SLinus Torvalds #include <linux/mman.h> 321da177e4SLinus Torvalds #include <linux/shm.h> 331da177e4SLinus Torvalds #include <linux/poll.h> 341da177e4SLinus Torvalds #include <linux/file.h> 351da177e4SLinus Torvalds #include <linux/types.h> 361da177e4SLinus Torvalds #include <linux/ipc.h> 371da177e4SLinus Torvalds #include <linux/namei.h> 381da177e4SLinus Torvalds #include <linux/uio.h> 391da177e4SLinus Torvalds #include <linux/vfs.h> 401da177e4SLinus Torvalds 411da177e4SLinus Torvalds #include <asm/fpu.h> 421da177e4SLinus Torvalds #include <asm/io.h> 431da177e4SLinus Torvalds #include <asm/uaccess.h> 441da177e4SLinus Torvalds #include <asm/system.h> 451da177e4SLinus Torvalds #include <asm/sysinfo.h> 461da177e4SLinus Torvalds #include <asm/hwrpb.h> 471da177e4SLinus Torvalds #include <asm/processor.h> 481da177e4SLinus Torvalds 491da177e4SLinus Torvalds extern int do_pipe(int *); 501da177e4SLinus Torvalds 511da177e4SLinus Torvalds /* 521da177e4SLinus Torvalds * Brk needs to return an error. Still support Linux's brk(0) query idiom, 531da177e4SLinus Torvalds * which OSF programs just shouldn't be doing. We're still not quite 541da177e4SLinus Torvalds * identical to OSF as we don't return 0 on success, but doing otherwise 551da177e4SLinus Torvalds * would require changes to libc. Hopefully this is good enough. 561da177e4SLinus Torvalds */ 571da177e4SLinus Torvalds asmlinkage unsigned long 581da177e4SLinus Torvalds osf_brk(unsigned long brk) 591da177e4SLinus Torvalds { 601da177e4SLinus Torvalds unsigned long retval = sys_brk(brk); 611da177e4SLinus Torvalds if (brk && brk != retval) 621da177e4SLinus Torvalds retval = -ENOMEM; 631da177e4SLinus Torvalds return retval; 641da177e4SLinus Torvalds } 651da177e4SLinus Torvalds 661da177e4SLinus Torvalds /* 671da177e4SLinus Torvalds * This is pure guess-work.. 681da177e4SLinus Torvalds */ 691da177e4SLinus Torvalds asmlinkage int 701da177e4SLinus Torvalds osf_set_program_attributes(unsigned long text_start, unsigned long text_len, 711da177e4SLinus Torvalds unsigned long bss_start, unsigned long bss_len) 721da177e4SLinus Torvalds { 731da177e4SLinus Torvalds struct mm_struct *mm; 741da177e4SLinus Torvalds 751da177e4SLinus Torvalds lock_kernel(); 761da177e4SLinus Torvalds mm = current->mm; 771da177e4SLinus Torvalds mm->end_code = bss_start + bss_len; 781da177e4SLinus Torvalds mm->brk = bss_start + bss_len; 791da177e4SLinus Torvalds #if 0 801da177e4SLinus Torvalds printk("set_program_attributes(%lx %lx %lx %lx)\n", 811da177e4SLinus Torvalds text_start, text_len, bss_start, bss_len); 821da177e4SLinus Torvalds #endif 831da177e4SLinus Torvalds unlock_kernel(); 841da177e4SLinus Torvalds return 0; 851da177e4SLinus Torvalds } 861da177e4SLinus Torvalds 871da177e4SLinus Torvalds /* 881da177e4SLinus Torvalds * OSF/1 directory handling functions... 891da177e4SLinus Torvalds * 901da177e4SLinus Torvalds * The "getdents()" interface is much more sane: the "basep" stuff is 911da177e4SLinus Torvalds * braindamage (it can't really handle filesystems where the directory 921da177e4SLinus Torvalds * offset differences aren't the same as "d_reclen"). 931da177e4SLinus Torvalds */ 941da177e4SLinus Torvalds #define NAME_OFFSET offsetof (struct osf_dirent, d_name) 951da177e4SLinus Torvalds #define ROUND_UP(x) (((x)+3) & ~3) 961da177e4SLinus Torvalds 971da177e4SLinus Torvalds struct osf_dirent { 981da177e4SLinus Torvalds unsigned int d_ino; 991da177e4SLinus Torvalds unsigned short d_reclen; 1001da177e4SLinus Torvalds unsigned short d_namlen; 1011da177e4SLinus Torvalds char d_name[1]; 1021da177e4SLinus Torvalds }; 1031da177e4SLinus Torvalds 1041da177e4SLinus Torvalds struct osf_dirent_callback { 1051da177e4SLinus Torvalds struct osf_dirent __user *dirent; 1061da177e4SLinus Torvalds long __user *basep; 1071da177e4SLinus Torvalds unsigned int count; 1081da177e4SLinus Torvalds int error; 1091da177e4SLinus Torvalds }; 1101da177e4SLinus Torvalds 1111da177e4SLinus Torvalds static int 1121da177e4SLinus Torvalds osf_filldir(void *__buf, const char *name, int namlen, loff_t offset, 1131da177e4SLinus Torvalds ino_t ino, unsigned int d_type) 1141da177e4SLinus Torvalds { 1151da177e4SLinus Torvalds struct osf_dirent __user *dirent; 1161da177e4SLinus Torvalds struct osf_dirent_callback *buf = (struct osf_dirent_callback *) __buf; 1171da177e4SLinus Torvalds unsigned int reclen = ROUND_UP(NAME_OFFSET + namlen + 1); 1181da177e4SLinus Torvalds 1191da177e4SLinus Torvalds buf->error = -EINVAL; /* only used if we fail */ 1201da177e4SLinus Torvalds if (reclen > buf->count) 1211da177e4SLinus Torvalds return -EINVAL; 1221da177e4SLinus Torvalds if (buf->basep) { 1231da177e4SLinus Torvalds if (put_user(offset, buf->basep)) 1241da177e4SLinus Torvalds return -EFAULT; 1251da177e4SLinus Torvalds buf->basep = NULL; 1261da177e4SLinus Torvalds } 1271da177e4SLinus Torvalds dirent = buf->dirent; 1281da177e4SLinus Torvalds put_user(ino, &dirent->d_ino); 1291da177e4SLinus Torvalds put_user(namlen, &dirent->d_namlen); 1301da177e4SLinus Torvalds put_user(reclen, &dirent->d_reclen); 1311da177e4SLinus Torvalds if (copy_to_user(dirent->d_name, name, namlen) || 1321da177e4SLinus Torvalds put_user(0, dirent->d_name + namlen)) 1331da177e4SLinus Torvalds return -EFAULT; 1341da177e4SLinus Torvalds dirent = (void __user *)dirent + reclen; 1351da177e4SLinus Torvalds buf->dirent = dirent; 1361da177e4SLinus Torvalds buf->count -= reclen; 1371da177e4SLinus Torvalds return 0; 1381da177e4SLinus Torvalds } 1391da177e4SLinus Torvalds 1401da177e4SLinus Torvalds asmlinkage int 1411da177e4SLinus Torvalds osf_getdirentries(unsigned int fd, struct osf_dirent __user *dirent, 1421da177e4SLinus Torvalds unsigned int count, long __user *basep) 1431da177e4SLinus Torvalds { 1441da177e4SLinus Torvalds int error; 1451da177e4SLinus Torvalds struct file *file; 1461da177e4SLinus Torvalds struct osf_dirent_callback buf; 1471da177e4SLinus Torvalds 1481da177e4SLinus Torvalds error = -EBADF; 1491da177e4SLinus Torvalds file = fget(fd); 1501da177e4SLinus Torvalds if (!file) 1511da177e4SLinus Torvalds goto out; 1521da177e4SLinus Torvalds 1531da177e4SLinus Torvalds buf.dirent = dirent; 1541da177e4SLinus Torvalds buf.basep = basep; 1551da177e4SLinus Torvalds buf.count = count; 1561da177e4SLinus Torvalds buf.error = 0; 1571da177e4SLinus Torvalds 1581da177e4SLinus Torvalds error = vfs_readdir(file, osf_filldir, &buf); 1591da177e4SLinus Torvalds if (error < 0) 1601da177e4SLinus Torvalds goto out_putf; 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds error = buf.error; 1631da177e4SLinus Torvalds if (count != buf.count) 1641da177e4SLinus Torvalds error = count - buf.count; 1651da177e4SLinus Torvalds 1661da177e4SLinus Torvalds out_putf: 1671da177e4SLinus Torvalds fput(file); 1681da177e4SLinus Torvalds out: 1691da177e4SLinus Torvalds return error; 1701da177e4SLinus Torvalds } 1711da177e4SLinus Torvalds 1721da177e4SLinus Torvalds #undef ROUND_UP 1731da177e4SLinus Torvalds #undef NAME_OFFSET 1741da177e4SLinus Torvalds 1751da177e4SLinus Torvalds asmlinkage unsigned long 1761da177e4SLinus Torvalds osf_mmap(unsigned long addr, unsigned long len, unsigned long prot, 1771da177e4SLinus Torvalds unsigned long flags, unsigned long fd, unsigned long off) 1781da177e4SLinus Torvalds { 1791da177e4SLinus Torvalds struct file *file = NULL; 1801da177e4SLinus Torvalds unsigned long ret = -EBADF; 1811da177e4SLinus Torvalds 1821da177e4SLinus Torvalds #if 0 1831da177e4SLinus Torvalds if (flags & (_MAP_HASSEMAPHORE | _MAP_INHERIT | _MAP_UNALIGNED)) 1841da177e4SLinus Torvalds printk("%s: unimplemented OSF mmap flags %04lx\n", 1851da177e4SLinus Torvalds current->comm, flags); 1861da177e4SLinus Torvalds #endif 1871da177e4SLinus Torvalds if (!(flags & MAP_ANONYMOUS)) { 1881da177e4SLinus Torvalds file = fget(fd); 1891da177e4SLinus Torvalds if (!file) 1901da177e4SLinus Torvalds goto out; 1911da177e4SLinus Torvalds } 1921da177e4SLinus Torvalds flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); 1931da177e4SLinus Torvalds down_write(¤t->mm->mmap_sem); 1941da177e4SLinus Torvalds ret = do_mmap(file, addr, len, prot, flags, off); 1951da177e4SLinus Torvalds up_write(¤t->mm->mmap_sem); 1961da177e4SLinus Torvalds if (file) 1971da177e4SLinus Torvalds fput(file); 1981da177e4SLinus Torvalds out: 1991da177e4SLinus Torvalds return ret; 2001da177e4SLinus Torvalds } 2011da177e4SLinus Torvalds 2021da177e4SLinus Torvalds 2031da177e4SLinus Torvalds /* 2041da177e4SLinus Torvalds * The OSF/1 statfs structure is much larger, but this should 2051da177e4SLinus Torvalds * match the beginning, at least. 2061da177e4SLinus Torvalds */ 2071da177e4SLinus Torvalds struct osf_statfs { 2081da177e4SLinus Torvalds short f_type; 2091da177e4SLinus Torvalds short f_flags; 2101da177e4SLinus Torvalds int f_fsize; 2111da177e4SLinus Torvalds int f_bsize; 2121da177e4SLinus Torvalds int f_blocks; 2131da177e4SLinus Torvalds int f_bfree; 2141da177e4SLinus Torvalds int f_bavail; 2151da177e4SLinus Torvalds int f_files; 2161da177e4SLinus Torvalds int f_ffree; 2171da177e4SLinus Torvalds __kernel_fsid_t f_fsid; 2181da177e4SLinus Torvalds }; 2191da177e4SLinus Torvalds 2201da177e4SLinus Torvalds static int 2211da177e4SLinus Torvalds linux_to_osf_statfs(struct kstatfs *linux_stat, struct osf_statfs __user *osf_stat, 2221da177e4SLinus Torvalds unsigned long bufsiz) 2231da177e4SLinus Torvalds { 2241da177e4SLinus Torvalds struct osf_statfs tmp_stat; 2251da177e4SLinus Torvalds 2261da177e4SLinus Torvalds tmp_stat.f_type = linux_stat->f_type; 2271da177e4SLinus Torvalds tmp_stat.f_flags = 0; /* mount flags */ 2281da177e4SLinus Torvalds tmp_stat.f_fsize = linux_stat->f_frsize; 2291da177e4SLinus Torvalds tmp_stat.f_bsize = linux_stat->f_bsize; 2301da177e4SLinus Torvalds tmp_stat.f_blocks = linux_stat->f_blocks; 2311da177e4SLinus Torvalds tmp_stat.f_bfree = linux_stat->f_bfree; 2321da177e4SLinus Torvalds tmp_stat.f_bavail = linux_stat->f_bavail; 2331da177e4SLinus Torvalds tmp_stat.f_files = linux_stat->f_files; 2341da177e4SLinus Torvalds tmp_stat.f_ffree = linux_stat->f_ffree; 2351da177e4SLinus Torvalds tmp_stat.f_fsid = linux_stat->f_fsid; 2361da177e4SLinus Torvalds if (bufsiz > sizeof(tmp_stat)) 2371da177e4SLinus Torvalds bufsiz = sizeof(tmp_stat); 2381da177e4SLinus Torvalds return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0; 2391da177e4SLinus Torvalds } 2401da177e4SLinus Torvalds 2411da177e4SLinus Torvalds static int 2421da177e4SLinus Torvalds do_osf_statfs(struct dentry * dentry, struct osf_statfs __user *buffer, 2431da177e4SLinus Torvalds unsigned long bufsiz) 2441da177e4SLinus Torvalds { 2451da177e4SLinus Torvalds struct kstatfs linux_stat; 2461da177e4SLinus Torvalds int error = vfs_statfs(dentry->d_inode->i_sb, &linux_stat); 2471da177e4SLinus Torvalds if (!error) 2481da177e4SLinus Torvalds error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz); 2491da177e4SLinus Torvalds return error; 2501da177e4SLinus Torvalds } 2511da177e4SLinus Torvalds 2521da177e4SLinus Torvalds asmlinkage int 2531da177e4SLinus Torvalds osf_statfs(char __user *path, struct osf_statfs __user *buffer, unsigned long bufsiz) 2541da177e4SLinus Torvalds { 2551da177e4SLinus Torvalds struct nameidata nd; 2561da177e4SLinus Torvalds int retval; 2571da177e4SLinus Torvalds 2581da177e4SLinus Torvalds retval = user_path_walk(path, &nd); 2591da177e4SLinus Torvalds if (!retval) { 2601da177e4SLinus Torvalds retval = do_osf_statfs(nd.dentry, buffer, bufsiz); 2611da177e4SLinus Torvalds path_release(&nd); 2621da177e4SLinus Torvalds } 2631da177e4SLinus Torvalds return retval; 2641da177e4SLinus Torvalds } 2651da177e4SLinus Torvalds 2661da177e4SLinus Torvalds asmlinkage int 2671da177e4SLinus Torvalds osf_fstatfs(unsigned long fd, struct osf_statfs __user *buffer, unsigned long bufsiz) 2681da177e4SLinus Torvalds { 2691da177e4SLinus Torvalds struct file *file; 2701da177e4SLinus Torvalds int retval; 2711da177e4SLinus Torvalds 2721da177e4SLinus Torvalds retval = -EBADF; 2731da177e4SLinus Torvalds file = fget(fd); 2741da177e4SLinus Torvalds if (file) { 2751da177e4SLinus Torvalds retval = do_osf_statfs(file->f_dentry, buffer, bufsiz); 2761da177e4SLinus Torvalds fput(file); 2771da177e4SLinus Torvalds } 2781da177e4SLinus Torvalds return retval; 2791da177e4SLinus Torvalds } 2801da177e4SLinus Torvalds 2811da177e4SLinus Torvalds /* 2821da177e4SLinus Torvalds * Uhh.. OSF/1 mount parameters aren't exactly obvious.. 2831da177e4SLinus Torvalds * 2841da177e4SLinus Torvalds * Although to be frank, neither are the native Linux/i386 ones.. 2851da177e4SLinus Torvalds */ 2861da177e4SLinus Torvalds struct ufs_args { 2871da177e4SLinus Torvalds char __user *devname; 2881da177e4SLinus Torvalds int flags; 2891da177e4SLinus Torvalds uid_t exroot; 2901da177e4SLinus Torvalds }; 2911da177e4SLinus Torvalds 2921da177e4SLinus Torvalds struct cdfs_args { 2931da177e4SLinus Torvalds char __user *devname; 2941da177e4SLinus Torvalds int flags; 2951da177e4SLinus Torvalds uid_t exroot; 2961da177e4SLinus Torvalds 2971da177e4SLinus Torvalds /* This has lots more here, which Linux handles with the option block 2981da177e4SLinus Torvalds but I'm too lazy to do the translation into ASCII. */ 2991da177e4SLinus Torvalds }; 3001da177e4SLinus Torvalds 3011da177e4SLinus Torvalds struct procfs_args { 3021da177e4SLinus Torvalds char __user *devname; 3031da177e4SLinus Torvalds int flags; 3041da177e4SLinus Torvalds uid_t exroot; 3051da177e4SLinus Torvalds }; 3061da177e4SLinus Torvalds 3071da177e4SLinus Torvalds /* 3081da177e4SLinus Torvalds * We can't actually handle ufs yet, so we translate UFS mounts to 3091da177e4SLinus Torvalds * ext2fs mounts. I wouldn't mind a UFS filesystem, but the UFS 3101da177e4SLinus Torvalds * layout is so braindead it's a major headache doing it. 3111da177e4SLinus Torvalds * 3121da177e4SLinus Torvalds * Just how long ago was it written? OTOH our UFS driver may be still 3131da177e4SLinus Torvalds * unhappy with OSF UFS. [CHECKME] 3141da177e4SLinus Torvalds */ 3151da177e4SLinus Torvalds static int 3161da177e4SLinus Torvalds osf_ufs_mount(char *dirname, struct ufs_args __user *args, int flags) 3171da177e4SLinus Torvalds { 3181da177e4SLinus Torvalds int retval; 3191da177e4SLinus Torvalds struct cdfs_args tmp; 3201da177e4SLinus Torvalds char *devname; 3211da177e4SLinus Torvalds 3221da177e4SLinus Torvalds retval = -EFAULT; 3231da177e4SLinus Torvalds if (copy_from_user(&tmp, args, sizeof(tmp))) 3241da177e4SLinus Torvalds goto out; 3251da177e4SLinus Torvalds devname = getname(tmp.devname); 3261da177e4SLinus Torvalds retval = PTR_ERR(devname); 3271da177e4SLinus Torvalds if (IS_ERR(devname)) 3281da177e4SLinus Torvalds goto out; 3291da177e4SLinus Torvalds retval = do_mount(devname, dirname, "ext2", flags, NULL); 3301da177e4SLinus Torvalds putname(devname); 3311da177e4SLinus Torvalds out: 3321da177e4SLinus Torvalds return retval; 3331da177e4SLinus Torvalds } 3341da177e4SLinus Torvalds 3351da177e4SLinus Torvalds static int 3361da177e4SLinus Torvalds osf_cdfs_mount(char *dirname, struct cdfs_args __user *args, int flags) 3371da177e4SLinus Torvalds { 3381da177e4SLinus Torvalds int retval; 3391da177e4SLinus Torvalds struct cdfs_args tmp; 3401da177e4SLinus Torvalds char *devname; 3411da177e4SLinus Torvalds 3421da177e4SLinus Torvalds retval = -EFAULT; 3431da177e4SLinus Torvalds if (copy_from_user(&tmp, args, sizeof(tmp))) 3441da177e4SLinus Torvalds goto out; 3451da177e4SLinus Torvalds devname = getname(tmp.devname); 3461da177e4SLinus Torvalds retval = PTR_ERR(devname); 3471da177e4SLinus Torvalds if (IS_ERR(devname)) 3481da177e4SLinus Torvalds goto out; 3491da177e4SLinus Torvalds retval = do_mount(devname, dirname, "iso9660", flags, NULL); 3501da177e4SLinus Torvalds putname(devname); 3511da177e4SLinus Torvalds out: 3521da177e4SLinus Torvalds return retval; 3531da177e4SLinus Torvalds } 3541da177e4SLinus Torvalds 3551da177e4SLinus Torvalds static int 3561da177e4SLinus Torvalds osf_procfs_mount(char *dirname, struct procfs_args __user *args, int flags) 3571da177e4SLinus Torvalds { 3581da177e4SLinus Torvalds struct procfs_args tmp; 3591da177e4SLinus Torvalds 3601da177e4SLinus Torvalds if (copy_from_user(&tmp, args, sizeof(tmp))) 3611da177e4SLinus Torvalds return -EFAULT; 3621da177e4SLinus Torvalds 3631da177e4SLinus Torvalds return do_mount("", dirname, "proc", flags, NULL); 3641da177e4SLinus Torvalds } 3651da177e4SLinus Torvalds 3661da177e4SLinus Torvalds asmlinkage int 3671da177e4SLinus Torvalds osf_mount(unsigned long typenr, char __user *path, int flag, void __user *data) 3681da177e4SLinus Torvalds { 3691da177e4SLinus Torvalds int retval = -EINVAL; 3701da177e4SLinus Torvalds char *name; 3711da177e4SLinus Torvalds 3721da177e4SLinus Torvalds lock_kernel(); 3731da177e4SLinus Torvalds 3741da177e4SLinus Torvalds name = getname(path); 3751da177e4SLinus Torvalds retval = PTR_ERR(name); 3761da177e4SLinus Torvalds if (IS_ERR(name)) 3771da177e4SLinus Torvalds goto out; 3781da177e4SLinus Torvalds switch (typenr) { 3791da177e4SLinus Torvalds case 1: 3801da177e4SLinus Torvalds retval = osf_ufs_mount(name, data, flag); 3811da177e4SLinus Torvalds break; 3821da177e4SLinus Torvalds case 6: 3831da177e4SLinus Torvalds retval = osf_cdfs_mount(name, data, flag); 3841da177e4SLinus Torvalds break; 3851da177e4SLinus Torvalds case 9: 3861da177e4SLinus Torvalds retval = osf_procfs_mount(name, data, flag); 3871da177e4SLinus Torvalds break; 3881da177e4SLinus Torvalds default: 3891da177e4SLinus Torvalds printk("osf_mount(%ld, %x)\n", typenr, flag); 3901da177e4SLinus Torvalds } 3911da177e4SLinus Torvalds putname(name); 3921da177e4SLinus Torvalds out: 3931da177e4SLinus Torvalds unlock_kernel(); 3941da177e4SLinus Torvalds return retval; 3951da177e4SLinus Torvalds } 3961da177e4SLinus Torvalds 3971da177e4SLinus Torvalds asmlinkage int 3981da177e4SLinus Torvalds osf_utsname(char __user *name) 3991da177e4SLinus Torvalds { 4001da177e4SLinus Torvalds int error; 4011da177e4SLinus Torvalds 4021da177e4SLinus Torvalds down_read(&uts_sem); 4031da177e4SLinus Torvalds error = -EFAULT; 4041da177e4SLinus Torvalds if (copy_to_user(name + 0, system_utsname.sysname, 32)) 4051da177e4SLinus Torvalds goto out; 4061da177e4SLinus Torvalds if (copy_to_user(name + 32, system_utsname.nodename, 32)) 4071da177e4SLinus Torvalds goto out; 4081da177e4SLinus Torvalds if (copy_to_user(name + 64, system_utsname.release, 32)) 4091da177e4SLinus Torvalds goto out; 4101da177e4SLinus Torvalds if (copy_to_user(name + 96, system_utsname.version, 32)) 4111da177e4SLinus Torvalds goto out; 4121da177e4SLinus Torvalds if (copy_to_user(name + 128, system_utsname.machine, 32)) 4131da177e4SLinus Torvalds goto out; 4141da177e4SLinus Torvalds 4151da177e4SLinus Torvalds error = 0; 4161da177e4SLinus Torvalds out: 4171da177e4SLinus Torvalds up_read(&uts_sem); 4181da177e4SLinus Torvalds return error; 4191da177e4SLinus Torvalds } 4201da177e4SLinus Torvalds 4211da177e4SLinus Torvalds asmlinkage unsigned long 4221da177e4SLinus Torvalds sys_getpagesize(void) 4231da177e4SLinus Torvalds { 4241da177e4SLinus Torvalds return PAGE_SIZE; 4251da177e4SLinus Torvalds } 4261da177e4SLinus Torvalds 4271da177e4SLinus Torvalds asmlinkage unsigned long 4281da177e4SLinus Torvalds sys_getdtablesize(void) 4291da177e4SLinus Torvalds { 4301da177e4SLinus Torvalds return NR_OPEN; 4311da177e4SLinus Torvalds } 4321da177e4SLinus Torvalds 4331da177e4SLinus Torvalds /* 4341da177e4SLinus Torvalds * For compatibility with OSF/1 only. Use utsname(2) instead. 4351da177e4SLinus Torvalds */ 4361da177e4SLinus Torvalds asmlinkage int 4371da177e4SLinus Torvalds osf_getdomainname(char __user *name, int namelen) 4381da177e4SLinus Torvalds { 4391da177e4SLinus Torvalds unsigned len; 4401da177e4SLinus Torvalds int i; 4411da177e4SLinus Torvalds 4421da177e4SLinus Torvalds if (!access_ok(VERIFY_WRITE, name, namelen)) 4431da177e4SLinus Torvalds return -EFAULT; 4441da177e4SLinus Torvalds 4451da177e4SLinus Torvalds len = namelen; 4461da177e4SLinus Torvalds if (namelen > 32) 4471da177e4SLinus Torvalds len = 32; 4481da177e4SLinus Torvalds 4491da177e4SLinus Torvalds down_read(&uts_sem); 4501da177e4SLinus Torvalds for (i = 0; i < len; ++i) { 4511da177e4SLinus Torvalds __put_user(system_utsname.domainname[i], name + i); 4521da177e4SLinus Torvalds if (system_utsname.domainname[i] == '\0') 4531da177e4SLinus Torvalds break; 4541da177e4SLinus Torvalds } 4551da177e4SLinus Torvalds up_read(&uts_sem); 4561da177e4SLinus Torvalds 4571da177e4SLinus Torvalds return 0; 4581da177e4SLinus Torvalds } 4591da177e4SLinus Torvalds 4601da177e4SLinus Torvalds /* 4611da177e4SLinus Torvalds * The following stuff should move into a header file should it ever 4621da177e4SLinus Torvalds * be labeled "officially supported." Right now, there is just enough 4631da177e4SLinus Torvalds * support to avoid applications (such as tar) printing error 4641da177e4SLinus Torvalds * messages. The attributes are not really implemented. 4651da177e4SLinus Torvalds */ 4661da177e4SLinus Torvalds 4671da177e4SLinus Torvalds /* 4681da177e4SLinus Torvalds * Values for Property list entry flag 4691da177e4SLinus Torvalds */ 4701da177e4SLinus Torvalds #define PLE_PROPAGATE_ON_COPY 0x1 /* cp(1) will copy entry 4711da177e4SLinus Torvalds by default */ 4721da177e4SLinus Torvalds #define PLE_FLAG_MASK 0x1 /* Valid flag values */ 4731da177e4SLinus Torvalds #define PLE_FLAG_ALL -1 /* All flag value */ 4741da177e4SLinus Torvalds 4751da177e4SLinus Torvalds struct proplistname_args { 4761da177e4SLinus Torvalds unsigned int pl_mask; 4771da177e4SLinus Torvalds unsigned int pl_numnames; 4781da177e4SLinus Torvalds char **pl_names; 4791da177e4SLinus Torvalds }; 4801da177e4SLinus Torvalds 4811da177e4SLinus Torvalds union pl_args { 4821da177e4SLinus Torvalds struct setargs { 4831da177e4SLinus Torvalds char __user *path; 4841da177e4SLinus Torvalds long follow; 4851da177e4SLinus Torvalds long nbytes; 4861da177e4SLinus Torvalds char __user *buf; 4871da177e4SLinus Torvalds } set; 4881da177e4SLinus Torvalds struct fsetargs { 4891da177e4SLinus Torvalds long fd; 4901da177e4SLinus Torvalds long nbytes; 4911da177e4SLinus Torvalds char __user *buf; 4921da177e4SLinus Torvalds } fset; 4931da177e4SLinus Torvalds struct getargs { 4941da177e4SLinus Torvalds char __user *path; 4951da177e4SLinus Torvalds long follow; 4961da177e4SLinus Torvalds struct proplistname_args __user *name_args; 4971da177e4SLinus Torvalds long nbytes; 4981da177e4SLinus Torvalds char __user *buf; 4991da177e4SLinus Torvalds int __user *min_buf_size; 5001da177e4SLinus Torvalds } get; 5011da177e4SLinus Torvalds struct fgetargs { 5021da177e4SLinus Torvalds long fd; 5031da177e4SLinus Torvalds struct proplistname_args __user *name_args; 5041da177e4SLinus Torvalds long nbytes; 5051da177e4SLinus Torvalds char __user *buf; 5061da177e4SLinus Torvalds int __user *min_buf_size; 5071da177e4SLinus Torvalds } fget; 5081da177e4SLinus Torvalds struct delargs { 5091da177e4SLinus Torvalds char __user *path; 5101da177e4SLinus Torvalds long follow; 5111da177e4SLinus Torvalds struct proplistname_args __user *name_args; 5121da177e4SLinus Torvalds } del; 5131da177e4SLinus Torvalds struct fdelargs { 5141da177e4SLinus Torvalds long fd; 5151da177e4SLinus Torvalds struct proplistname_args __user *name_args; 5161da177e4SLinus Torvalds } fdel; 5171da177e4SLinus Torvalds }; 5181da177e4SLinus Torvalds 5191da177e4SLinus Torvalds enum pl_code { 5201da177e4SLinus Torvalds PL_SET = 1, PL_FSET = 2, 5211da177e4SLinus Torvalds PL_GET = 3, PL_FGET = 4, 5221da177e4SLinus Torvalds PL_DEL = 5, PL_FDEL = 6 5231da177e4SLinus Torvalds }; 5241da177e4SLinus Torvalds 5251da177e4SLinus Torvalds asmlinkage long 5261da177e4SLinus Torvalds osf_proplist_syscall(enum pl_code code, union pl_args __user *args) 5271da177e4SLinus Torvalds { 5281da177e4SLinus Torvalds long error; 5291da177e4SLinus Torvalds int __user *min_buf_size_ptr; 5301da177e4SLinus Torvalds 5311da177e4SLinus Torvalds lock_kernel(); 5321da177e4SLinus Torvalds switch (code) { 5331da177e4SLinus Torvalds case PL_SET: 5341da177e4SLinus Torvalds if (get_user(error, &args->set.nbytes)) 5351da177e4SLinus Torvalds error = -EFAULT; 5361da177e4SLinus Torvalds break; 5371da177e4SLinus Torvalds case PL_FSET: 5381da177e4SLinus Torvalds if (get_user(error, &args->fset.nbytes)) 5391da177e4SLinus Torvalds error = -EFAULT; 5401da177e4SLinus Torvalds break; 5411da177e4SLinus Torvalds case PL_GET: 5421da177e4SLinus Torvalds error = get_user(min_buf_size_ptr, &args->get.min_buf_size); 5431da177e4SLinus Torvalds if (error) 5441da177e4SLinus Torvalds break; 5451da177e4SLinus Torvalds error = put_user(0, min_buf_size_ptr); 5461da177e4SLinus Torvalds break; 5471da177e4SLinus Torvalds case PL_FGET: 5481da177e4SLinus Torvalds error = get_user(min_buf_size_ptr, &args->fget.min_buf_size); 5491da177e4SLinus Torvalds if (error) 5501da177e4SLinus Torvalds break; 5511da177e4SLinus Torvalds error = put_user(0, min_buf_size_ptr); 5521da177e4SLinus Torvalds break; 5531da177e4SLinus Torvalds case PL_DEL: 5541da177e4SLinus Torvalds case PL_FDEL: 5551da177e4SLinus Torvalds error = 0; 5561da177e4SLinus Torvalds break; 5571da177e4SLinus Torvalds default: 5581da177e4SLinus Torvalds error = -EOPNOTSUPP; 5591da177e4SLinus Torvalds break; 5601da177e4SLinus Torvalds }; 5611da177e4SLinus Torvalds unlock_kernel(); 5621da177e4SLinus Torvalds return error; 5631da177e4SLinus Torvalds } 5641da177e4SLinus Torvalds 5651da177e4SLinus Torvalds asmlinkage int 5661da177e4SLinus Torvalds osf_sigstack(struct sigstack __user *uss, struct sigstack __user *uoss) 5671da177e4SLinus Torvalds { 5681da177e4SLinus Torvalds unsigned long usp = rdusp(); 5691da177e4SLinus Torvalds unsigned long oss_sp = current->sas_ss_sp + current->sas_ss_size; 5701da177e4SLinus Torvalds unsigned long oss_os = on_sig_stack(usp); 5711da177e4SLinus Torvalds int error; 5721da177e4SLinus Torvalds 5731da177e4SLinus Torvalds if (uss) { 5741da177e4SLinus Torvalds void __user *ss_sp; 5751da177e4SLinus Torvalds 5761da177e4SLinus Torvalds error = -EFAULT; 5771da177e4SLinus Torvalds if (get_user(ss_sp, &uss->ss_sp)) 5781da177e4SLinus Torvalds goto out; 5791da177e4SLinus Torvalds 5801da177e4SLinus Torvalds /* If the current stack was set with sigaltstack, don't 5811da177e4SLinus Torvalds swap stacks while we are on it. */ 5821da177e4SLinus Torvalds error = -EPERM; 5831da177e4SLinus Torvalds if (current->sas_ss_sp && on_sig_stack(usp)) 5841da177e4SLinus Torvalds goto out; 5851da177e4SLinus Torvalds 5861da177e4SLinus Torvalds /* Since we don't know the extent of the stack, and we don't 5871da177e4SLinus Torvalds track onstack-ness, but rather calculate it, we must 5881da177e4SLinus Torvalds presume a size. Ho hum this interface is lossy. */ 5891da177e4SLinus Torvalds current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ; 5901da177e4SLinus Torvalds current->sas_ss_size = SIGSTKSZ; 5911da177e4SLinus Torvalds } 5921da177e4SLinus Torvalds 5931da177e4SLinus Torvalds if (uoss) { 5941da177e4SLinus Torvalds error = -EFAULT; 5951da177e4SLinus Torvalds if (! access_ok(VERIFY_WRITE, uoss, sizeof(*uoss)) 5961da177e4SLinus Torvalds || __put_user(oss_sp, &uoss->ss_sp) 5971da177e4SLinus Torvalds || __put_user(oss_os, &uoss->ss_onstack)) 5981da177e4SLinus Torvalds goto out; 5991da177e4SLinus Torvalds } 6001da177e4SLinus Torvalds 6011da177e4SLinus Torvalds error = 0; 6021da177e4SLinus Torvalds out: 6031da177e4SLinus Torvalds return error; 6041da177e4SLinus Torvalds } 6051da177e4SLinus Torvalds 6061da177e4SLinus Torvalds asmlinkage long 6071da177e4SLinus Torvalds osf_sysinfo(int command, char __user *buf, long count) 6081da177e4SLinus Torvalds { 6091da177e4SLinus Torvalds static char * sysinfo_table[] = { 6101da177e4SLinus Torvalds system_utsname.sysname, 6111da177e4SLinus Torvalds system_utsname.nodename, 6121da177e4SLinus Torvalds system_utsname.release, 6131da177e4SLinus Torvalds system_utsname.version, 6141da177e4SLinus Torvalds system_utsname.machine, 6151da177e4SLinus Torvalds "alpha", /* instruction set architecture */ 6161da177e4SLinus Torvalds "dummy", /* hardware serial number */ 6171da177e4SLinus Torvalds "dummy", /* hardware manufacturer */ 6181da177e4SLinus Torvalds "dummy", /* secure RPC domain */ 6191da177e4SLinus Torvalds }; 6201da177e4SLinus Torvalds unsigned long offset; 6211da177e4SLinus Torvalds char *res; 6221da177e4SLinus Torvalds long len, err = -EINVAL; 6231da177e4SLinus Torvalds 6241da177e4SLinus Torvalds offset = command-1; 6251da177e4SLinus Torvalds if (offset >= sizeof(sysinfo_table)/sizeof(char *)) { 6261da177e4SLinus Torvalds /* Digital UNIX has a few unpublished interfaces here */ 6271da177e4SLinus Torvalds printk("sysinfo(%d)", command); 6281da177e4SLinus Torvalds goto out; 6291da177e4SLinus Torvalds } 6301da177e4SLinus Torvalds 6311da177e4SLinus Torvalds down_read(&uts_sem); 6321da177e4SLinus Torvalds res = sysinfo_table[offset]; 6331da177e4SLinus Torvalds len = strlen(res)+1; 6341da177e4SLinus Torvalds if (len > count) 6351da177e4SLinus Torvalds len = count; 6361da177e4SLinus Torvalds if (copy_to_user(buf, res, len)) 6371da177e4SLinus Torvalds err = -EFAULT; 6381da177e4SLinus Torvalds else 6391da177e4SLinus Torvalds err = 0; 6401da177e4SLinus Torvalds up_read(&uts_sem); 6411da177e4SLinus Torvalds out: 6421da177e4SLinus Torvalds return err; 6431da177e4SLinus Torvalds } 6441da177e4SLinus Torvalds 6451da177e4SLinus Torvalds asmlinkage unsigned long 6461da177e4SLinus Torvalds osf_getsysinfo(unsigned long op, void __user *buffer, unsigned long nbytes, 6471da177e4SLinus Torvalds int __user *start, void __user *arg) 6481da177e4SLinus Torvalds { 6491da177e4SLinus Torvalds unsigned long w; 6501da177e4SLinus Torvalds struct percpu_struct *cpu; 6511da177e4SLinus Torvalds 6521da177e4SLinus Torvalds switch (op) { 6531da177e4SLinus Torvalds case GSI_IEEE_FP_CONTROL: 6541da177e4SLinus Torvalds /* Return current software fp control & status bits. */ 6551da177e4SLinus Torvalds /* Note that DU doesn't verify available space here. */ 6561da177e4SLinus Torvalds 6571da177e4SLinus Torvalds w = current_thread_info()->ieee_state & IEEE_SW_MASK; 6581da177e4SLinus Torvalds w = swcr_update_status(w, rdfpcr()); 6591da177e4SLinus Torvalds if (put_user(w, (unsigned long __user *) buffer)) 6601da177e4SLinus Torvalds return -EFAULT; 6611da177e4SLinus Torvalds return 0; 6621da177e4SLinus Torvalds 6631da177e4SLinus Torvalds case GSI_IEEE_STATE_AT_SIGNAL: 6641da177e4SLinus Torvalds /* 6651da177e4SLinus Torvalds * Not sure anybody will ever use this weird stuff. These 6661da177e4SLinus Torvalds * ops can be used (under OSF/1) to set the fpcr that should 6671da177e4SLinus Torvalds * be used when a signal handler starts executing. 6681da177e4SLinus Torvalds */ 6691da177e4SLinus Torvalds break; 6701da177e4SLinus Torvalds 6711da177e4SLinus Torvalds case GSI_UACPROC: 6721da177e4SLinus Torvalds if (nbytes < sizeof(unsigned int)) 6731da177e4SLinus Torvalds return -EINVAL; 6741da177e4SLinus Torvalds w = (current_thread_info()->flags >> UAC_SHIFT) & UAC_BITMASK; 6751da177e4SLinus Torvalds if (put_user(w, (unsigned int __user *)buffer)) 6761da177e4SLinus Torvalds return -EFAULT; 6771da177e4SLinus Torvalds return 1; 6781da177e4SLinus Torvalds 6791da177e4SLinus Torvalds case GSI_PROC_TYPE: 6801da177e4SLinus Torvalds if (nbytes < sizeof(unsigned long)) 6811da177e4SLinus Torvalds return -EINVAL; 6821da177e4SLinus Torvalds cpu = (struct percpu_struct*) 6831da177e4SLinus Torvalds ((char*)hwrpb + hwrpb->processor_offset); 6841da177e4SLinus Torvalds w = cpu->type; 6851da177e4SLinus Torvalds if (put_user(w, (unsigned long __user*)buffer)) 6861da177e4SLinus Torvalds return -EFAULT; 6871da177e4SLinus Torvalds return 1; 6881da177e4SLinus Torvalds 6891da177e4SLinus Torvalds case GSI_GET_HWRPB: 6901da177e4SLinus Torvalds if (nbytes < sizeof(*hwrpb)) 6911da177e4SLinus Torvalds return -EINVAL; 6921da177e4SLinus Torvalds if (copy_to_user(buffer, hwrpb, nbytes) != 0) 6931da177e4SLinus Torvalds return -EFAULT; 6941da177e4SLinus Torvalds return 1; 6951da177e4SLinus Torvalds 6961da177e4SLinus Torvalds default: 6971da177e4SLinus Torvalds break; 6981da177e4SLinus Torvalds } 6991da177e4SLinus Torvalds 7001da177e4SLinus Torvalds return -EOPNOTSUPP; 7011da177e4SLinus Torvalds } 7021da177e4SLinus Torvalds 7031da177e4SLinus Torvalds asmlinkage unsigned long 7041da177e4SLinus Torvalds osf_setsysinfo(unsigned long op, void __user *buffer, unsigned long nbytes, 7051da177e4SLinus Torvalds int __user *start, void __user *arg) 7061da177e4SLinus Torvalds { 7071da177e4SLinus Torvalds switch (op) { 7081da177e4SLinus Torvalds case SSI_IEEE_FP_CONTROL: { 7091da177e4SLinus Torvalds unsigned long swcr, fpcr; 7101da177e4SLinus Torvalds unsigned int *state; 7111da177e4SLinus Torvalds 7121da177e4SLinus Torvalds /* 7131da177e4SLinus Torvalds * Alpha Architecture Handbook 4.7.7.3: 7141da177e4SLinus Torvalds * To be fully IEEE compiant, we must track the current IEEE 7151da177e4SLinus Torvalds * exception state in software, because spurrious bits can be 7161da177e4SLinus Torvalds * set in the trap shadow of a software-complete insn. 7171da177e4SLinus Torvalds */ 7181da177e4SLinus Torvalds 7191da177e4SLinus Torvalds if (get_user(swcr, (unsigned long __user *)buffer)) 7201da177e4SLinus Torvalds return -EFAULT; 7211da177e4SLinus Torvalds state = ¤t_thread_info()->ieee_state; 7221da177e4SLinus Torvalds 7231da177e4SLinus Torvalds /* Update softare trap enable bits. */ 7241da177e4SLinus Torvalds *state = (*state & ~IEEE_SW_MASK) | (swcr & IEEE_SW_MASK); 7251da177e4SLinus Torvalds 7261da177e4SLinus Torvalds /* Update the real fpcr. */ 7271da177e4SLinus Torvalds fpcr = rdfpcr() & FPCR_DYN_MASK; 7281da177e4SLinus Torvalds fpcr |= ieee_swcr_to_fpcr(swcr); 7291da177e4SLinus Torvalds wrfpcr(fpcr); 7301da177e4SLinus Torvalds 7311da177e4SLinus Torvalds return 0; 7321da177e4SLinus Torvalds } 7331da177e4SLinus Torvalds 7341da177e4SLinus Torvalds case SSI_IEEE_RAISE_EXCEPTION: { 7351da177e4SLinus Torvalds unsigned long exc, swcr, fpcr, fex; 7361da177e4SLinus Torvalds unsigned int *state; 7371da177e4SLinus Torvalds 7381da177e4SLinus Torvalds if (get_user(exc, (unsigned long __user *)buffer)) 7391da177e4SLinus Torvalds return -EFAULT; 7401da177e4SLinus Torvalds state = ¤t_thread_info()->ieee_state; 7411da177e4SLinus Torvalds exc &= IEEE_STATUS_MASK; 7421da177e4SLinus Torvalds 7431da177e4SLinus Torvalds /* Update softare trap enable bits. */ 7441da177e4SLinus Torvalds swcr = (*state & IEEE_SW_MASK) | exc; 7451da177e4SLinus Torvalds *state |= exc; 7461da177e4SLinus Torvalds 7471da177e4SLinus Torvalds /* Update the real fpcr. */ 7481da177e4SLinus Torvalds fpcr = rdfpcr(); 7491da177e4SLinus Torvalds fpcr |= ieee_swcr_to_fpcr(swcr); 7501da177e4SLinus Torvalds wrfpcr(fpcr); 7511da177e4SLinus Torvalds 7521da177e4SLinus Torvalds /* If any exceptions set by this call, and are unmasked, 7531da177e4SLinus Torvalds send a signal. Old exceptions are not signaled. */ 7541da177e4SLinus Torvalds fex = (exc >> IEEE_STATUS_TO_EXCSUM_SHIFT) & swcr; 7551da177e4SLinus Torvalds if (fex) { 7561da177e4SLinus Torvalds siginfo_t info; 7571da177e4SLinus Torvalds int si_code = 0; 7581da177e4SLinus Torvalds 7591da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_DNO) si_code = FPE_FLTUND; 7601da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_INE) si_code = FPE_FLTRES; 7611da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_UNF) si_code = FPE_FLTUND; 7621da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_OVF) si_code = FPE_FLTOVF; 7631da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_DZE) si_code = FPE_FLTDIV; 7641da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_INV) si_code = FPE_FLTINV; 7651da177e4SLinus Torvalds 7661da177e4SLinus Torvalds info.si_signo = SIGFPE; 7671da177e4SLinus Torvalds info.si_errno = 0; 7681da177e4SLinus Torvalds info.si_code = si_code; 7691da177e4SLinus Torvalds info.si_addr = NULL; /* FIXME */ 7701da177e4SLinus Torvalds send_sig_info(SIGFPE, &info, current); 7711da177e4SLinus Torvalds } 7721da177e4SLinus Torvalds return 0; 7731da177e4SLinus Torvalds } 7741da177e4SLinus Torvalds 7751da177e4SLinus Torvalds case SSI_IEEE_STATE_AT_SIGNAL: 7761da177e4SLinus Torvalds case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: 7771da177e4SLinus Torvalds /* 7781da177e4SLinus Torvalds * Not sure anybody will ever use this weird stuff. These 7791da177e4SLinus Torvalds * ops can be used (under OSF/1) to set the fpcr that should 7801da177e4SLinus Torvalds * be used when a signal handler starts executing. 7811da177e4SLinus Torvalds */ 7821da177e4SLinus Torvalds break; 7831da177e4SLinus Torvalds 7841da177e4SLinus Torvalds case SSI_NVPAIRS: { 7851da177e4SLinus Torvalds unsigned long v, w, i; 7861da177e4SLinus Torvalds unsigned int old, new; 7871da177e4SLinus Torvalds 7881da177e4SLinus Torvalds for (i = 0; i < nbytes; ++i) { 7891da177e4SLinus Torvalds 7901da177e4SLinus Torvalds if (get_user(v, 2*i + (unsigned int __user *)buffer)) 7911da177e4SLinus Torvalds return -EFAULT; 7921da177e4SLinus Torvalds if (get_user(w, 2*i + 1 + (unsigned int __user *)buffer)) 7931da177e4SLinus Torvalds return -EFAULT; 7941da177e4SLinus Torvalds switch (v) { 7951da177e4SLinus Torvalds case SSIN_UACPROC: 7961da177e4SLinus Torvalds again: 7971da177e4SLinus Torvalds old = current_thread_info()->flags; 7981da177e4SLinus Torvalds new = old & ~(UAC_BITMASK << UAC_SHIFT); 7991da177e4SLinus Torvalds new = new | (w & UAC_BITMASK) << UAC_SHIFT; 8001da177e4SLinus Torvalds if (cmpxchg(¤t_thread_info()->flags, 8011da177e4SLinus Torvalds old, new) != old) 8021da177e4SLinus Torvalds goto again; 8031da177e4SLinus Torvalds break; 8041da177e4SLinus Torvalds 8051da177e4SLinus Torvalds default: 8061da177e4SLinus Torvalds return -EOPNOTSUPP; 8071da177e4SLinus Torvalds } 8081da177e4SLinus Torvalds } 8091da177e4SLinus Torvalds return 0; 8101da177e4SLinus Torvalds } 8111da177e4SLinus Torvalds 8121da177e4SLinus Torvalds default: 8131da177e4SLinus Torvalds break; 8141da177e4SLinus Torvalds } 8151da177e4SLinus Torvalds 8161da177e4SLinus Torvalds return -EOPNOTSUPP; 8171da177e4SLinus Torvalds } 8181da177e4SLinus Torvalds 8191da177e4SLinus Torvalds /* Translations due to the fact that OSF's time_t is an int. Which 8201da177e4SLinus Torvalds affects all sorts of things, like timeval and itimerval. */ 8211da177e4SLinus Torvalds 8221da177e4SLinus Torvalds extern struct timezone sys_tz; 8231da177e4SLinus Torvalds extern int do_adjtimex(struct timex *); 8241da177e4SLinus Torvalds 8251da177e4SLinus Torvalds struct timeval32 8261da177e4SLinus Torvalds { 8271da177e4SLinus Torvalds int tv_sec, tv_usec; 8281da177e4SLinus Torvalds }; 8291da177e4SLinus Torvalds 8301da177e4SLinus Torvalds struct itimerval32 8311da177e4SLinus Torvalds { 8321da177e4SLinus Torvalds struct timeval32 it_interval; 8331da177e4SLinus Torvalds struct timeval32 it_value; 8341da177e4SLinus Torvalds }; 8351da177e4SLinus Torvalds 8361da177e4SLinus Torvalds static inline long 8371da177e4SLinus Torvalds get_tv32(struct timeval *o, struct timeval32 __user *i) 8381da177e4SLinus Torvalds { 8391da177e4SLinus Torvalds return (!access_ok(VERIFY_READ, i, sizeof(*i)) || 8401da177e4SLinus Torvalds (__get_user(o->tv_sec, &i->tv_sec) | 8411da177e4SLinus Torvalds __get_user(o->tv_usec, &i->tv_usec))); 8421da177e4SLinus Torvalds } 8431da177e4SLinus Torvalds 8441da177e4SLinus Torvalds static inline long 8451da177e4SLinus Torvalds put_tv32(struct timeval32 __user *o, struct timeval *i) 8461da177e4SLinus Torvalds { 8471da177e4SLinus Torvalds return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || 8481da177e4SLinus Torvalds (__put_user(i->tv_sec, &o->tv_sec) | 8491da177e4SLinus Torvalds __put_user(i->tv_usec, &o->tv_usec))); 8501da177e4SLinus Torvalds } 8511da177e4SLinus Torvalds 8521da177e4SLinus Torvalds static inline long 8531da177e4SLinus Torvalds get_it32(struct itimerval *o, struct itimerval32 __user *i) 8541da177e4SLinus Torvalds { 8551da177e4SLinus Torvalds return (!access_ok(VERIFY_READ, i, sizeof(*i)) || 8561da177e4SLinus Torvalds (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) | 8571da177e4SLinus Torvalds __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) | 8581da177e4SLinus Torvalds __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) | 8591da177e4SLinus Torvalds __get_user(o->it_value.tv_usec, &i->it_value.tv_usec))); 8601da177e4SLinus Torvalds } 8611da177e4SLinus Torvalds 8621da177e4SLinus Torvalds static inline long 8631da177e4SLinus Torvalds put_it32(struct itimerval32 __user *o, struct itimerval *i) 8641da177e4SLinus Torvalds { 8651da177e4SLinus Torvalds return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || 8661da177e4SLinus Torvalds (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) | 8671da177e4SLinus Torvalds __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) | 8681da177e4SLinus Torvalds __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) | 8691da177e4SLinus Torvalds __put_user(i->it_value.tv_usec, &o->it_value.tv_usec))); 8701da177e4SLinus Torvalds } 8711da177e4SLinus Torvalds 8721da177e4SLinus Torvalds static inline void 8731da177e4SLinus Torvalds jiffies_to_timeval32(unsigned long jiffies, struct timeval32 *value) 8741da177e4SLinus Torvalds { 8751da177e4SLinus Torvalds value->tv_usec = (jiffies % HZ) * (1000000L / HZ); 8761da177e4SLinus Torvalds value->tv_sec = jiffies / HZ; 8771da177e4SLinus Torvalds } 8781da177e4SLinus Torvalds 8791da177e4SLinus Torvalds asmlinkage int 8801da177e4SLinus Torvalds osf_gettimeofday(struct timeval32 __user *tv, struct timezone __user *tz) 8811da177e4SLinus Torvalds { 8821da177e4SLinus Torvalds if (tv) { 8831da177e4SLinus Torvalds struct timeval ktv; 8841da177e4SLinus Torvalds do_gettimeofday(&ktv); 8851da177e4SLinus Torvalds if (put_tv32(tv, &ktv)) 8861da177e4SLinus Torvalds return -EFAULT; 8871da177e4SLinus Torvalds } 8881da177e4SLinus Torvalds if (tz) { 8891da177e4SLinus Torvalds if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) 8901da177e4SLinus Torvalds return -EFAULT; 8911da177e4SLinus Torvalds } 8921da177e4SLinus Torvalds return 0; 8931da177e4SLinus Torvalds } 8941da177e4SLinus Torvalds 8951da177e4SLinus Torvalds asmlinkage int 8961da177e4SLinus Torvalds osf_settimeofday(struct timeval32 __user *tv, struct timezone __user *tz) 8971da177e4SLinus Torvalds { 8981da177e4SLinus Torvalds struct timespec kts; 8991da177e4SLinus Torvalds struct timezone ktz; 9001da177e4SLinus Torvalds 9011da177e4SLinus Torvalds if (tv) { 9021da177e4SLinus Torvalds if (get_tv32((struct timeval *)&kts, tv)) 9031da177e4SLinus Torvalds return -EFAULT; 9041da177e4SLinus Torvalds } 9051da177e4SLinus Torvalds if (tz) { 9061da177e4SLinus Torvalds if (copy_from_user(&ktz, tz, sizeof(*tz))) 9071da177e4SLinus Torvalds return -EFAULT; 9081da177e4SLinus Torvalds } 9091da177e4SLinus Torvalds 9101da177e4SLinus Torvalds kts.tv_nsec *= 1000; 9111da177e4SLinus Torvalds 9121da177e4SLinus Torvalds return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); 9131da177e4SLinus Torvalds } 9141da177e4SLinus Torvalds 9151da177e4SLinus Torvalds asmlinkage int 9161da177e4SLinus Torvalds osf_getitimer(int which, struct itimerval32 __user *it) 9171da177e4SLinus Torvalds { 9181da177e4SLinus Torvalds struct itimerval kit; 9191da177e4SLinus Torvalds int error; 9201da177e4SLinus Torvalds 9211da177e4SLinus Torvalds error = do_getitimer(which, &kit); 9221da177e4SLinus Torvalds if (!error && put_it32(it, &kit)) 9231da177e4SLinus Torvalds error = -EFAULT; 9241da177e4SLinus Torvalds 9251da177e4SLinus Torvalds return error; 9261da177e4SLinus Torvalds } 9271da177e4SLinus Torvalds 9281da177e4SLinus Torvalds asmlinkage int 9291da177e4SLinus Torvalds osf_setitimer(int which, struct itimerval32 __user *in, struct itimerval32 __user *out) 9301da177e4SLinus Torvalds { 9311da177e4SLinus Torvalds struct itimerval kin, kout; 9321da177e4SLinus Torvalds int error; 9331da177e4SLinus Torvalds 9341da177e4SLinus Torvalds if (in) { 9351da177e4SLinus Torvalds if (get_it32(&kin, in)) 9361da177e4SLinus Torvalds return -EFAULT; 9371da177e4SLinus Torvalds } else 9381da177e4SLinus Torvalds memset(&kin, 0, sizeof(kin)); 9391da177e4SLinus Torvalds 9401da177e4SLinus Torvalds error = do_setitimer(which, &kin, out ? &kout : NULL); 9411da177e4SLinus Torvalds if (error || !out) 9421da177e4SLinus Torvalds return error; 9431da177e4SLinus Torvalds 9441da177e4SLinus Torvalds if (put_it32(out, &kout)) 9451da177e4SLinus Torvalds return -EFAULT; 9461da177e4SLinus Torvalds 9471da177e4SLinus Torvalds return 0; 9481da177e4SLinus Torvalds 9491da177e4SLinus Torvalds } 9501da177e4SLinus Torvalds 9511da177e4SLinus Torvalds asmlinkage int 9521da177e4SLinus Torvalds osf_utimes(char __user *filename, struct timeval32 __user *tvs) 9531da177e4SLinus Torvalds { 9541da177e4SLinus Torvalds struct timeval ktvs[2]; 9551da177e4SLinus Torvalds 9561da177e4SLinus Torvalds if (tvs) { 9571da177e4SLinus Torvalds if (get_tv32(&ktvs[0], &tvs[0]) || 9581da177e4SLinus Torvalds get_tv32(&ktvs[1], &tvs[1])) 9591da177e4SLinus Torvalds return -EFAULT; 9601da177e4SLinus Torvalds } 9611da177e4SLinus Torvalds 9621da177e4SLinus Torvalds return do_utimes(filename, tvs ? ktvs : NULL); 9631da177e4SLinus Torvalds } 9641da177e4SLinus Torvalds 9651da177e4SLinus Torvalds #define MAX_SELECT_SECONDS \ 9661da177e4SLinus Torvalds ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1) 9671da177e4SLinus Torvalds 9681da177e4SLinus Torvalds asmlinkage int 9691da177e4SLinus Torvalds osf_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp, 9701da177e4SLinus Torvalds struct timeval32 __user *tvp) 9711da177e4SLinus Torvalds { 9721da177e4SLinus Torvalds fd_set_bits fds; 9731da177e4SLinus Torvalds char *bits; 9741da177e4SLinus Torvalds size_t size; 9751da177e4SLinus Torvalds long timeout; 9761da177e4SLinus Torvalds int ret = -EINVAL; 9771da177e4SLinus Torvalds 9781da177e4SLinus Torvalds timeout = MAX_SCHEDULE_TIMEOUT; 9791da177e4SLinus Torvalds if (tvp) { 9801da177e4SLinus Torvalds time_t sec, usec; 9811da177e4SLinus Torvalds 9821da177e4SLinus Torvalds if (!access_ok(VERIFY_READ, tvp, sizeof(*tvp)) 9831da177e4SLinus Torvalds || __get_user(sec, &tvp->tv_sec) 9841da177e4SLinus Torvalds || __get_user(usec, &tvp->tv_usec)) { 9851da177e4SLinus Torvalds ret = -EFAULT; 9861da177e4SLinus Torvalds goto out_nofds; 9871da177e4SLinus Torvalds } 9881da177e4SLinus Torvalds 9891da177e4SLinus Torvalds if (sec < 0 || usec < 0) 9901da177e4SLinus Torvalds goto out_nofds; 9911da177e4SLinus Torvalds 9921da177e4SLinus Torvalds if ((unsigned long) sec < MAX_SELECT_SECONDS) { 9931da177e4SLinus Torvalds timeout = (usec + 1000000/HZ - 1) / (1000000/HZ); 9941da177e4SLinus Torvalds timeout += sec * (unsigned long) HZ; 9951da177e4SLinus Torvalds } 9961da177e4SLinus Torvalds } 9971da177e4SLinus Torvalds 9981da177e4SLinus Torvalds if (n < 0 || n > current->files->max_fdset) 9991da177e4SLinus Torvalds goto out_nofds; 10001da177e4SLinus Torvalds 10011da177e4SLinus Torvalds /* 10021da177e4SLinus Torvalds * We need 6 bitmaps (in/out/ex for both incoming and outgoing), 10031da177e4SLinus Torvalds * since we used fdset we need to allocate memory in units of 10041da177e4SLinus Torvalds * long-words. 10051da177e4SLinus Torvalds */ 10061da177e4SLinus Torvalds ret = -ENOMEM; 10071da177e4SLinus Torvalds size = FDS_BYTES(n); 10081da177e4SLinus Torvalds bits = kmalloc(6 * size, GFP_KERNEL); 10091da177e4SLinus Torvalds if (!bits) 10101da177e4SLinus Torvalds goto out_nofds; 10111da177e4SLinus Torvalds fds.in = (unsigned long *) bits; 10121da177e4SLinus Torvalds fds.out = (unsigned long *) (bits + size); 10131da177e4SLinus Torvalds fds.ex = (unsigned long *) (bits + 2*size); 10141da177e4SLinus Torvalds fds.res_in = (unsigned long *) (bits + 3*size); 10151da177e4SLinus Torvalds fds.res_out = (unsigned long *) (bits + 4*size); 10161da177e4SLinus Torvalds fds.res_ex = (unsigned long *) (bits + 5*size); 10171da177e4SLinus Torvalds 10181da177e4SLinus Torvalds if ((ret = get_fd_set(n, inp->fds_bits, fds.in)) || 10191da177e4SLinus Torvalds (ret = get_fd_set(n, outp->fds_bits, fds.out)) || 10201da177e4SLinus Torvalds (ret = get_fd_set(n, exp->fds_bits, fds.ex))) 10211da177e4SLinus Torvalds goto out; 10221da177e4SLinus Torvalds zero_fd_set(n, fds.res_in); 10231da177e4SLinus Torvalds zero_fd_set(n, fds.res_out); 10241da177e4SLinus Torvalds zero_fd_set(n, fds.res_ex); 10251da177e4SLinus Torvalds 10261da177e4SLinus Torvalds ret = do_select(n, &fds, &timeout); 10271da177e4SLinus Torvalds 10281da177e4SLinus Torvalds /* OSF does not copy back the remaining time. */ 10291da177e4SLinus Torvalds 10301da177e4SLinus Torvalds if (ret < 0) 10311da177e4SLinus Torvalds goto out; 10321da177e4SLinus Torvalds if (!ret) { 10331da177e4SLinus Torvalds ret = -ERESTARTNOHAND; 10341da177e4SLinus Torvalds if (signal_pending(current)) 10351da177e4SLinus Torvalds goto out; 10361da177e4SLinus Torvalds ret = 0; 10371da177e4SLinus Torvalds } 10381da177e4SLinus Torvalds 10391da177e4SLinus Torvalds if (set_fd_set(n, inp->fds_bits, fds.res_in) || 10401da177e4SLinus Torvalds set_fd_set(n, outp->fds_bits, fds.res_out) || 10411da177e4SLinus Torvalds set_fd_set(n, exp->fds_bits, fds.res_ex)) 10421da177e4SLinus Torvalds ret = -EFAULT; 10431da177e4SLinus Torvalds 10441da177e4SLinus Torvalds out: 10451da177e4SLinus Torvalds kfree(bits); 10461da177e4SLinus Torvalds out_nofds: 10471da177e4SLinus Torvalds return ret; 10481da177e4SLinus Torvalds } 10491da177e4SLinus Torvalds 10501da177e4SLinus Torvalds struct rusage32 { 10511da177e4SLinus Torvalds struct timeval32 ru_utime; /* user time used */ 10521da177e4SLinus Torvalds struct timeval32 ru_stime; /* system time used */ 10531da177e4SLinus Torvalds long ru_maxrss; /* maximum resident set size */ 10541da177e4SLinus Torvalds long ru_ixrss; /* integral shared memory size */ 10551da177e4SLinus Torvalds long ru_idrss; /* integral unshared data size */ 10561da177e4SLinus Torvalds long ru_isrss; /* integral unshared stack size */ 10571da177e4SLinus Torvalds long ru_minflt; /* page reclaims */ 10581da177e4SLinus Torvalds long ru_majflt; /* page faults */ 10591da177e4SLinus Torvalds long ru_nswap; /* swaps */ 10601da177e4SLinus Torvalds long ru_inblock; /* block input operations */ 10611da177e4SLinus Torvalds long ru_oublock; /* block output operations */ 10621da177e4SLinus Torvalds long ru_msgsnd; /* messages sent */ 10631da177e4SLinus Torvalds long ru_msgrcv; /* messages received */ 10641da177e4SLinus Torvalds long ru_nsignals; /* signals received */ 10651da177e4SLinus Torvalds long ru_nvcsw; /* voluntary context switches */ 10661da177e4SLinus Torvalds long ru_nivcsw; /* involuntary " */ 10671da177e4SLinus Torvalds }; 10681da177e4SLinus Torvalds 10691da177e4SLinus Torvalds asmlinkage int 10701da177e4SLinus Torvalds osf_getrusage(int who, struct rusage32 __user *ru) 10711da177e4SLinus Torvalds { 10721da177e4SLinus Torvalds struct rusage32 r; 10731da177e4SLinus Torvalds 10741da177e4SLinus Torvalds if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN) 10751da177e4SLinus Torvalds return -EINVAL; 10761da177e4SLinus Torvalds 10771da177e4SLinus Torvalds memset(&r, 0, sizeof(r)); 10781da177e4SLinus Torvalds switch (who) { 10791da177e4SLinus Torvalds case RUSAGE_SELF: 10801da177e4SLinus Torvalds jiffies_to_timeval32(current->utime, &r.ru_utime); 10811da177e4SLinus Torvalds jiffies_to_timeval32(current->stime, &r.ru_stime); 10821da177e4SLinus Torvalds r.ru_minflt = current->min_flt; 10831da177e4SLinus Torvalds r.ru_majflt = current->maj_flt; 10841da177e4SLinus Torvalds break; 10851da177e4SLinus Torvalds case RUSAGE_CHILDREN: 10861da177e4SLinus Torvalds jiffies_to_timeval32(current->signal->cutime, &r.ru_utime); 10871da177e4SLinus Torvalds jiffies_to_timeval32(current->signal->cstime, &r.ru_stime); 10881da177e4SLinus Torvalds r.ru_minflt = current->signal->cmin_flt; 10891da177e4SLinus Torvalds r.ru_majflt = current->signal->cmaj_flt; 10901da177e4SLinus Torvalds break; 10911da177e4SLinus Torvalds } 10921da177e4SLinus Torvalds 10931da177e4SLinus Torvalds return copy_to_user(ru, &r, sizeof(r)) ? -EFAULT : 0; 10941da177e4SLinus Torvalds } 10951da177e4SLinus Torvalds 10961da177e4SLinus Torvalds asmlinkage long 10971da177e4SLinus Torvalds osf_wait4(pid_t pid, int __user *ustatus, int options, 10981da177e4SLinus Torvalds struct rusage32 __user *ur) 10991da177e4SLinus Torvalds { 11001da177e4SLinus Torvalds struct rusage r; 11011da177e4SLinus Torvalds long ret, err; 11021da177e4SLinus Torvalds mm_segment_t old_fs; 11031da177e4SLinus Torvalds 11041da177e4SLinus Torvalds if (!ur) 11051da177e4SLinus Torvalds return sys_wait4(pid, ustatus, options, NULL); 11061da177e4SLinus Torvalds 11071da177e4SLinus Torvalds old_fs = get_fs(); 11081da177e4SLinus Torvalds 11091da177e4SLinus Torvalds set_fs (KERNEL_DS); 11101da177e4SLinus Torvalds ret = sys_wait4(pid, ustatus, options, (struct rusage __user *) &r); 11111da177e4SLinus Torvalds set_fs (old_fs); 11121da177e4SLinus Torvalds 11131da177e4SLinus Torvalds if (!access_ok(VERIFY_WRITE, ur, sizeof(*ur))) 11141da177e4SLinus Torvalds return -EFAULT; 11151da177e4SLinus Torvalds 11161da177e4SLinus Torvalds err = 0; 11171da177e4SLinus Torvalds err |= __put_user(r.ru_utime.tv_sec, &ur->ru_utime.tv_sec); 11181da177e4SLinus Torvalds err |= __put_user(r.ru_utime.tv_usec, &ur->ru_utime.tv_usec); 11191da177e4SLinus Torvalds err |= __put_user(r.ru_stime.tv_sec, &ur->ru_stime.tv_sec); 11201da177e4SLinus Torvalds err |= __put_user(r.ru_stime.tv_usec, &ur->ru_stime.tv_usec); 11211da177e4SLinus Torvalds err |= __put_user(r.ru_maxrss, &ur->ru_maxrss); 11221da177e4SLinus Torvalds err |= __put_user(r.ru_ixrss, &ur->ru_ixrss); 11231da177e4SLinus Torvalds err |= __put_user(r.ru_idrss, &ur->ru_idrss); 11241da177e4SLinus Torvalds err |= __put_user(r.ru_isrss, &ur->ru_isrss); 11251da177e4SLinus Torvalds err |= __put_user(r.ru_minflt, &ur->ru_minflt); 11261da177e4SLinus Torvalds err |= __put_user(r.ru_majflt, &ur->ru_majflt); 11271da177e4SLinus Torvalds err |= __put_user(r.ru_nswap, &ur->ru_nswap); 11281da177e4SLinus Torvalds err |= __put_user(r.ru_inblock, &ur->ru_inblock); 11291da177e4SLinus Torvalds err |= __put_user(r.ru_oublock, &ur->ru_oublock); 11301da177e4SLinus Torvalds err |= __put_user(r.ru_msgsnd, &ur->ru_msgsnd); 11311da177e4SLinus Torvalds err |= __put_user(r.ru_msgrcv, &ur->ru_msgrcv); 11321da177e4SLinus Torvalds err |= __put_user(r.ru_nsignals, &ur->ru_nsignals); 11331da177e4SLinus Torvalds err |= __put_user(r.ru_nvcsw, &ur->ru_nvcsw); 11341da177e4SLinus Torvalds err |= __put_user(r.ru_nivcsw, &ur->ru_nivcsw); 11351da177e4SLinus Torvalds 11361da177e4SLinus Torvalds return err ? err : ret; 11371da177e4SLinus Torvalds } 11381da177e4SLinus Torvalds 11391da177e4SLinus Torvalds /* 11401da177e4SLinus Torvalds * I don't know what the parameters are: the first one 11411da177e4SLinus Torvalds * seems to be a timeval pointer, and I suspect the second 11421da177e4SLinus Torvalds * one is the time remaining.. Ho humm.. No documentation. 11431da177e4SLinus Torvalds */ 11441da177e4SLinus Torvalds asmlinkage int 11451da177e4SLinus Torvalds osf_usleep_thread(struct timeval32 __user *sleep, struct timeval32 __user *remain) 11461da177e4SLinus Torvalds { 11471da177e4SLinus Torvalds struct timeval tmp; 11481da177e4SLinus Torvalds unsigned long ticks; 11491da177e4SLinus Torvalds 11501da177e4SLinus Torvalds if (get_tv32(&tmp, sleep)) 11511da177e4SLinus Torvalds goto fault; 11521da177e4SLinus Torvalds 115324d568edSNishanth Aravamudan ticks = timeval_to_jiffies(&tmp); 11541da177e4SLinus Torvalds 11551da177e4SLinus Torvalds current->state = TASK_INTERRUPTIBLE; 11561da177e4SLinus Torvalds ticks = schedule_timeout(ticks); 11571da177e4SLinus Torvalds 11581da177e4SLinus Torvalds if (remain) { 115924d568edSNishanth Aravamudan jiffies_to_timeval(ticks, &tmp); 11601da177e4SLinus Torvalds if (put_tv32(remain, &tmp)) 11611da177e4SLinus Torvalds goto fault; 11621da177e4SLinus Torvalds } 11631da177e4SLinus Torvalds 11641da177e4SLinus Torvalds return 0; 11651da177e4SLinus Torvalds fault: 11661da177e4SLinus Torvalds return -EFAULT; 11671da177e4SLinus Torvalds } 11681da177e4SLinus Torvalds 11691da177e4SLinus Torvalds 11701da177e4SLinus Torvalds struct timex32 { 11711da177e4SLinus Torvalds unsigned int modes; /* mode selector */ 11721da177e4SLinus Torvalds long offset; /* time offset (usec) */ 11731da177e4SLinus Torvalds long freq; /* frequency offset (scaled ppm) */ 11741da177e4SLinus Torvalds long maxerror; /* maximum error (usec) */ 11751da177e4SLinus Torvalds long esterror; /* estimated error (usec) */ 11761da177e4SLinus Torvalds int status; /* clock command/status */ 11771da177e4SLinus Torvalds long constant; /* pll time constant */ 11781da177e4SLinus Torvalds long precision; /* clock precision (usec) (read only) */ 11791da177e4SLinus Torvalds long tolerance; /* clock frequency tolerance (ppm) 11801da177e4SLinus Torvalds * (read only) 11811da177e4SLinus Torvalds */ 11821da177e4SLinus Torvalds struct timeval32 time; /* (read only) */ 11831da177e4SLinus Torvalds long tick; /* (modified) usecs between clock ticks */ 11841da177e4SLinus Torvalds 11851da177e4SLinus Torvalds long ppsfreq; /* pps frequency (scaled ppm) (ro) */ 11861da177e4SLinus Torvalds long jitter; /* pps jitter (us) (ro) */ 11871da177e4SLinus Torvalds int shift; /* interval duration (s) (shift) (ro) */ 11881da177e4SLinus Torvalds long stabil; /* pps stability (scaled ppm) (ro) */ 11891da177e4SLinus Torvalds long jitcnt; /* jitter limit exceeded (ro) */ 11901da177e4SLinus Torvalds long calcnt; /* calibration intervals (ro) */ 11911da177e4SLinus Torvalds long errcnt; /* calibration errors (ro) */ 11921da177e4SLinus Torvalds long stbcnt; /* stability limit exceeded (ro) */ 11931da177e4SLinus Torvalds 11941da177e4SLinus Torvalds int :32; int :32; int :32; int :32; 11951da177e4SLinus Torvalds int :32; int :32; int :32; int :32; 11961da177e4SLinus Torvalds int :32; int :32; int :32; int :32; 11971da177e4SLinus Torvalds }; 11981da177e4SLinus Torvalds 11991da177e4SLinus Torvalds asmlinkage int 12001da177e4SLinus Torvalds sys_old_adjtimex(struct timex32 __user *txc_p) 12011da177e4SLinus Torvalds { 12021da177e4SLinus Torvalds struct timex txc; 12031da177e4SLinus Torvalds int ret; 12041da177e4SLinus Torvalds 12051da177e4SLinus Torvalds /* copy relevant bits of struct timex. */ 12061da177e4SLinus Torvalds if (copy_from_user(&txc, txc_p, offsetof(struct timex32, time)) || 12071da177e4SLinus Torvalds copy_from_user(&txc.tick, &txc_p->tick, sizeof(struct timex32) - 12081da177e4SLinus Torvalds offsetof(struct timex32, time))) 12091da177e4SLinus Torvalds return -EFAULT; 12101da177e4SLinus Torvalds 12111da177e4SLinus Torvalds ret = do_adjtimex(&txc); 12121da177e4SLinus Torvalds if (ret < 0) 12131da177e4SLinus Torvalds return ret; 12141da177e4SLinus Torvalds 12151da177e4SLinus Torvalds /* copy back to timex32 */ 12161da177e4SLinus Torvalds if (copy_to_user(txc_p, &txc, offsetof(struct timex32, time)) || 12171da177e4SLinus Torvalds (copy_to_user(&txc_p->tick, &txc.tick, sizeof(struct timex32) - 12181da177e4SLinus Torvalds offsetof(struct timex32, tick))) || 12191da177e4SLinus Torvalds (put_tv32(&txc_p->time, &txc.time))) 12201da177e4SLinus Torvalds return -EFAULT; 12211da177e4SLinus Torvalds 12221da177e4SLinus Torvalds return ret; 12231da177e4SLinus Torvalds } 12241da177e4SLinus Torvalds 12251da177e4SLinus Torvalds /* Get an address range which is currently unmapped. Similar to the 12261da177e4SLinus Torvalds generic version except that we know how to honor ADDR_LIMIT_32BIT. */ 12271da177e4SLinus Torvalds 12281da177e4SLinus Torvalds static unsigned long 12291da177e4SLinus Torvalds arch_get_unmapped_area_1(unsigned long addr, unsigned long len, 12301da177e4SLinus Torvalds unsigned long limit) 12311da177e4SLinus Torvalds { 12321da177e4SLinus Torvalds struct vm_area_struct *vma = find_vma(current->mm, addr); 12331da177e4SLinus Torvalds 12341da177e4SLinus Torvalds while (1) { 12351da177e4SLinus Torvalds /* At this point: (!vma || addr < vma->vm_end). */ 12361da177e4SLinus Torvalds if (limit - len < addr) 12371da177e4SLinus Torvalds return -ENOMEM; 12381da177e4SLinus Torvalds if (!vma || addr + len <= vma->vm_start) 12391da177e4SLinus Torvalds return addr; 12401da177e4SLinus Torvalds addr = vma->vm_end; 12411da177e4SLinus Torvalds vma = vma->vm_next; 12421da177e4SLinus Torvalds } 12431da177e4SLinus Torvalds } 12441da177e4SLinus Torvalds 12451da177e4SLinus Torvalds unsigned long 12461da177e4SLinus Torvalds arch_get_unmapped_area(struct file *filp, unsigned long addr, 12471da177e4SLinus Torvalds unsigned long len, unsigned long pgoff, 12481da177e4SLinus Torvalds unsigned long flags) 12491da177e4SLinus Torvalds { 12501da177e4SLinus Torvalds unsigned long limit; 12511da177e4SLinus Torvalds 12521da177e4SLinus Torvalds /* "32 bit" actually means 31 bit, since pointers sign extend. */ 12531da177e4SLinus Torvalds if (current->personality & ADDR_LIMIT_32BIT) 12541da177e4SLinus Torvalds limit = 0x80000000; 12551da177e4SLinus Torvalds else 12561da177e4SLinus Torvalds limit = TASK_SIZE; 12571da177e4SLinus Torvalds 12581da177e4SLinus Torvalds if (len > limit) 12591da177e4SLinus Torvalds return -ENOMEM; 12601da177e4SLinus Torvalds 12611da177e4SLinus Torvalds /* First, see if the given suggestion fits. 12621da177e4SLinus Torvalds 12631da177e4SLinus Torvalds The OSF/1 loader (/sbin/loader) relies on us returning an 12641da177e4SLinus Torvalds address larger than the requested if one exists, which is 12651da177e4SLinus Torvalds a terribly broken way to program. 12661da177e4SLinus Torvalds 12671da177e4SLinus Torvalds That said, I can see the use in being able to suggest not 12681da177e4SLinus Torvalds merely specific addresses, but regions of memory -- perhaps 12691da177e4SLinus Torvalds this feature should be incorporated into all ports? */ 12701da177e4SLinus Torvalds 12711da177e4SLinus Torvalds if (addr) { 12721da177e4SLinus Torvalds addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit); 12731da177e4SLinus Torvalds if (addr != (unsigned long) -ENOMEM) 12741da177e4SLinus Torvalds return addr; 12751da177e4SLinus Torvalds } 12761da177e4SLinus Torvalds 12771da177e4SLinus Torvalds /* Next, try allocating at TASK_UNMAPPED_BASE. */ 12781da177e4SLinus Torvalds addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE), 12791da177e4SLinus Torvalds len, limit); 12801da177e4SLinus Torvalds if (addr != (unsigned long) -ENOMEM) 12811da177e4SLinus Torvalds return addr; 12821da177e4SLinus Torvalds 12831da177e4SLinus Torvalds /* Finally, try allocating in low memory. */ 12841da177e4SLinus Torvalds addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit); 12851da177e4SLinus Torvalds 12861da177e4SLinus Torvalds return addr; 12871da177e4SLinus Torvalds } 12881da177e4SLinus Torvalds 12891da177e4SLinus Torvalds #ifdef CONFIG_OSF4_COMPAT 12901da177e4SLinus Torvalds 12911da177e4SLinus Torvalds /* Clear top 32 bits of iov_len in the user's buffer for 12921da177e4SLinus Torvalds compatibility with old versions of OSF/1 where iov_len 12931da177e4SLinus Torvalds was defined as int. */ 12941da177e4SLinus Torvalds static int 12951da177e4SLinus Torvalds osf_fix_iov_len(const struct iovec __user *iov, unsigned long count) 12961da177e4SLinus Torvalds { 12971da177e4SLinus Torvalds unsigned long i; 12981da177e4SLinus Torvalds 12991da177e4SLinus Torvalds for (i = 0 ; i < count ; i++) { 13001da177e4SLinus Torvalds int __user *iov_len_high = (int __user *)&iov[i].iov_len + 1; 13011da177e4SLinus Torvalds 13021da177e4SLinus Torvalds if (put_user(0, iov_len_high)) 13031da177e4SLinus Torvalds return -EFAULT; 13041da177e4SLinus Torvalds } 13051da177e4SLinus Torvalds return 0; 13061da177e4SLinus Torvalds } 13071da177e4SLinus Torvalds 13081da177e4SLinus Torvalds asmlinkage ssize_t 13091da177e4SLinus Torvalds osf_readv(unsigned long fd, const struct iovec __user * vector, unsigned long count) 13101da177e4SLinus Torvalds { 13111da177e4SLinus Torvalds if (unlikely(personality(current->personality) == PER_OSF4)) 13121da177e4SLinus Torvalds if (osf_fix_iov_len(vector, count)) 13131da177e4SLinus Torvalds return -EFAULT; 13141da177e4SLinus Torvalds return sys_readv(fd, vector, count); 13151da177e4SLinus Torvalds } 13161da177e4SLinus Torvalds 13171da177e4SLinus Torvalds asmlinkage ssize_t 13181da177e4SLinus Torvalds osf_writev(unsigned long fd, const struct iovec __user * vector, unsigned long count) 13191da177e4SLinus Torvalds { 13201da177e4SLinus Torvalds if (unlikely(personality(current->personality) == PER_OSF4)) 13211da177e4SLinus Torvalds if (osf_fix_iov_len(vector, count)) 13221da177e4SLinus Torvalds return -EFAULT; 13231da177e4SLinus Torvalds return sys_writev(fd, vector, count); 13241da177e4SLinus Torvalds } 13251da177e4SLinus Torvalds 13261da177e4SLinus Torvalds #endif 1327