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/stddef.h> 191da177e4SLinus Torvalds #include <linux/syscalls.h> 201da177e4SLinus Torvalds #include <linux/unistd.h> 211da177e4SLinus Torvalds #include <linux/ptrace.h> 221da177e4SLinus Torvalds #include <linux/user.h> 231da177e4SLinus Torvalds #include <linux/utsname.h> 241da177e4SLinus Torvalds #include <linux/time.h> 251da177e4SLinus Torvalds #include <linux/timex.h> 261da177e4SLinus Torvalds #include <linux/major.h> 271da177e4SLinus Torvalds #include <linux/stat.h> 281da177e4SLinus Torvalds #include <linux/mman.h> 291da177e4SLinus Torvalds #include <linux/shm.h> 301da177e4SLinus Torvalds #include <linux/poll.h> 311da177e4SLinus Torvalds #include <linux/file.h> 321da177e4SLinus Torvalds #include <linux/types.h> 331da177e4SLinus Torvalds #include <linux/ipc.h> 341da177e4SLinus Torvalds #include <linux/namei.h> 351da177e4SLinus Torvalds #include <linux/uio.h> 361da177e4SLinus Torvalds #include <linux/vfs.h> 374fb3a538SDipankar Sarma #include <linux/rcupdate.h> 385a0e3ad6STejun Heo #include <linux/slab.h> 391da177e4SLinus Torvalds 401da177e4SLinus Torvalds #include <asm/fpu.h> 411da177e4SLinus Torvalds #include <asm/io.h> 421da177e4SLinus Torvalds #include <asm/uaccess.h> 431da177e4SLinus Torvalds #include <asm/system.h> 441da177e4SLinus Torvalds #include <asm/sysinfo.h> 452df7a7d1SSergei Trofimovich #include <asm/thread_info.h> 461da177e4SLinus Torvalds #include <asm/hwrpb.h> 471da177e4SLinus Torvalds #include <asm/processor.h> 481da177e4SLinus Torvalds 491da177e4SLinus Torvalds /* 501da177e4SLinus Torvalds * Brk needs to return an error. Still support Linux's brk(0) query idiom, 511da177e4SLinus Torvalds * which OSF programs just shouldn't be doing. We're still not quite 521da177e4SLinus Torvalds * identical to OSF as we don't return 0 on success, but doing otherwise 531da177e4SLinus Torvalds * would require changes to libc. Hopefully this is good enough. 541da177e4SLinus Torvalds */ 55e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE1(osf_brk, unsigned long, brk) 561da177e4SLinus Torvalds { 571da177e4SLinus Torvalds unsigned long retval = sys_brk(brk); 581da177e4SLinus Torvalds if (brk && brk != retval) 591da177e4SLinus Torvalds retval = -ENOMEM; 601da177e4SLinus Torvalds return retval; 611da177e4SLinus Torvalds } 621da177e4SLinus Torvalds 631da177e4SLinus Torvalds /* 641da177e4SLinus Torvalds * This is pure guess-work.. 651da177e4SLinus Torvalds */ 66e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE4(osf_set_program_attributes, unsigned long, text_start, 67e5d9a90cSIvan Kokshaysky unsigned long, text_len, unsigned long, bss_start, 68e5d9a90cSIvan Kokshaysky unsigned long, bss_len) 691da177e4SLinus Torvalds { 701da177e4SLinus Torvalds struct mm_struct *mm; 711da177e4SLinus Torvalds 721da177e4SLinus Torvalds mm = current->mm; 731da177e4SLinus Torvalds mm->end_code = bss_start + bss_len; 742444e56bSIvan Kokshaysky mm->start_brk = bss_start + bss_len; 751da177e4SLinus Torvalds mm->brk = bss_start + bss_len; 761da177e4SLinus Torvalds #if 0 771da177e4SLinus Torvalds printk("set_program_attributes(%lx %lx %lx %lx)\n", 781da177e4SLinus Torvalds text_start, text_len, bss_start, bss_len); 791da177e4SLinus Torvalds #endif 801da177e4SLinus Torvalds return 0; 811da177e4SLinus Torvalds } 821da177e4SLinus Torvalds 831da177e4SLinus Torvalds /* 841da177e4SLinus Torvalds * OSF/1 directory handling functions... 851da177e4SLinus Torvalds * 861da177e4SLinus Torvalds * The "getdents()" interface is much more sane: the "basep" stuff is 871da177e4SLinus Torvalds * braindamage (it can't really handle filesystems where the directory 881da177e4SLinus Torvalds * offset differences aren't the same as "d_reclen"). 891da177e4SLinus Torvalds */ 901da177e4SLinus Torvalds #define NAME_OFFSET offsetof (struct osf_dirent, d_name) 911da177e4SLinus Torvalds 921da177e4SLinus Torvalds struct osf_dirent { 931da177e4SLinus Torvalds unsigned int d_ino; 941da177e4SLinus Torvalds unsigned short d_reclen; 951da177e4SLinus Torvalds unsigned short d_namlen; 961da177e4SLinus Torvalds char d_name[1]; 971da177e4SLinus Torvalds }; 981da177e4SLinus Torvalds 991da177e4SLinus Torvalds struct osf_dirent_callback { 1001da177e4SLinus Torvalds struct osf_dirent __user *dirent; 1011da177e4SLinus Torvalds long __user *basep; 1021da177e4SLinus Torvalds unsigned int count; 1031da177e4SLinus Torvalds int error; 1041da177e4SLinus Torvalds }; 1051da177e4SLinus Torvalds 1061da177e4SLinus Torvalds static int 1071da177e4SLinus Torvalds osf_filldir(void *__buf, const char *name, int namlen, loff_t offset, 108afefdbb2SDavid Howells u64 ino, unsigned int d_type) 1091da177e4SLinus Torvalds { 1101da177e4SLinus Torvalds struct osf_dirent __user *dirent; 1111da177e4SLinus Torvalds struct osf_dirent_callback *buf = (struct osf_dirent_callback *) __buf; 112180e53a7SMilind Arun Choudhary unsigned int reclen = ALIGN(NAME_OFFSET + namlen + 1, sizeof(u32)); 113afefdbb2SDavid Howells unsigned int d_ino; 1141da177e4SLinus Torvalds 1151da177e4SLinus Torvalds buf->error = -EINVAL; /* only used if we fail */ 1161da177e4SLinus Torvalds if (reclen > buf->count) 1171da177e4SLinus Torvalds return -EINVAL; 118afefdbb2SDavid Howells d_ino = ino; 119645e68edSAl Viro if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) { 120645e68edSAl Viro buf->error = -EOVERFLOW; 121afefdbb2SDavid Howells return -EOVERFLOW; 122645e68edSAl Viro } 1231da177e4SLinus Torvalds if (buf->basep) { 1241da177e4SLinus Torvalds if (put_user(offset, buf->basep)) 125645e68edSAl Viro goto Efault; 1261da177e4SLinus Torvalds buf->basep = NULL; 1271da177e4SLinus Torvalds } 1281da177e4SLinus Torvalds dirent = buf->dirent; 129645e68edSAl Viro if (put_user(d_ino, &dirent->d_ino) || 130645e68edSAl Viro put_user(namlen, &dirent->d_namlen) || 131645e68edSAl Viro put_user(reclen, &dirent->d_reclen) || 132645e68edSAl Viro copy_to_user(dirent->d_name, name, namlen) || 1331da177e4SLinus Torvalds put_user(0, dirent->d_name + namlen)) 134645e68edSAl Viro goto Efault; 1351da177e4SLinus Torvalds dirent = (void __user *)dirent + reclen; 1361da177e4SLinus Torvalds buf->dirent = dirent; 1371da177e4SLinus Torvalds buf->count -= reclen; 1381da177e4SLinus Torvalds return 0; 139645e68edSAl Viro Efault: 140645e68edSAl Viro buf->error = -EFAULT; 141645e68edSAl Viro return -EFAULT; 1421da177e4SLinus Torvalds } 1431da177e4SLinus Torvalds 144e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE4(osf_getdirentries, unsigned int, fd, 145e5d9a90cSIvan Kokshaysky struct osf_dirent __user *, dirent, unsigned int, count, 146e5d9a90cSIvan Kokshaysky long __user *, basep) 1471da177e4SLinus Torvalds { 1481da177e4SLinus Torvalds int error; 1491da177e4SLinus Torvalds struct file *file; 1501da177e4SLinus Torvalds struct osf_dirent_callback buf; 1511da177e4SLinus Torvalds 1521da177e4SLinus Torvalds error = -EBADF; 1531da177e4SLinus Torvalds file = fget(fd); 1541da177e4SLinus Torvalds if (!file) 1551da177e4SLinus Torvalds goto out; 1561da177e4SLinus Torvalds 1571da177e4SLinus Torvalds buf.dirent = dirent; 1581da177e4SLinus Torvalds buf.basep = basep; 1591da177e4SLinus Torvalds buf.count = count; 1601da177e4SLinus Torvalds buf.error = 0; 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds error = vfs_readdir(file, osf_filldir, &buf); 16353c9c5c0SAl Viro if (error >= 0) 1641da177e4SLinus Torvalds error = buf.error; 1651da177e4SLinus Torvalds if (count != buf.count) 1661da177e4SLinus Torvalds error = count - buf.count; 1671da177e4SLinus Torvalds 1681da177e4SLinus Torvalds fput(file); 1691da177e4SLinus Torvalds out: 1701da177e4SLinus Torvalds return error; 1711da177e4SLinus Torvalds } 1721da177e4SLinus Torvalds 1731da177e4SLinus Torvalds #undef NAME_OFFSET 1741da177e4SLinus Torvalds 175e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE6(osf_mmap, unsigned long, addr, unsigned long, len, 176e5d9a90cSIvan Kokshaysky unsigned long, prot, unsigned long, flags, unsigned long, fd, 177e5d9a90cSIvan Kokshaysky unsigned long, off) 1781da177e4SLinus Torvalds { 179f8b72560SAl Viro unsigned long ret = -EINVAL; 1801da177e4SLinus Torvalds 1811da177e4SLinus Torvalds #if 0 1821da177e4SLinus Torvalds if (flags & (_MAP_HASSEMAPHORE | _MAP_INHERIT | _MAP_UNALIGNED)) 1831da177e4SLinus Torvalds printk("%s: unimplemented OSF mmap flags %04lx\n", 1841da177e4SLinus Torvalds current->comm, flags); 1851da177e4SLinus Torvalds #endif 186f8b72560SAl Viro if ((off + PAGE_ALIGN(len)) < off) 1871da177e4SLinus Torvalds goto out; 188f8b72560SAl Viro if (off & ~PAGE_MASK) 189f8b72560SAl Viro goto out; 190f8b72560SAl Viro ret = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); 1911da177e4SLinus Torvalds out: 1921da177e4SLinus Torvalds return ret; 1931da177e4SLinus Torvalds } 1941da177e4SLinus Torvalds 1951da177e4SLinus Torvalds 1961da177e4SLinus Torvalds /* 1971da177e4SLinus Torvalds * The OSF/1 statfs structure is much larger, but this should 1981da177e4SLinus Torvalds * match the beginning, at least. 1991da177e4SLinus Torvalds */ 2001da177e4SLinus Torvalds struct osf_statfs { 2011da177e4SLinus Torvalds short f_type; 2021da177e4SLinus Torvalds short f_flags; 2031da177e4SLinus Torvalds int f_fsize; 2041da177e4SLinus Torvalds int f_bsize; 2051da177e4SLinus Torvalds int f_blocks; 2061da177e4SLinus Torvalds int f_bfree; 2071da177e4SLinus Torvalds int f_bavail; 2081da177e4SLinus Torvalds int f_files; 2091da177e4SLinus Torvalds int f_ffree; 2101da177e4SLinus Torvalds __kernel_fsid_t f_fsid; 2111da177e4SLinus Torvalds }; 2121da177e4SLinus Torvalds 2131da177e4SLinus Torvalds static int 2141da177e4SLinus Torvalds linux_to_osf_statfs(struct kstatfs *linux_stat, struct osf_statfs __user *osf_stat, 2151da177e4SLinus Torvalds unsigned long bufsiz) 2161da177e4SLinus Torvalds { 2171da177e4SLinus Torvalds struct osf_statfs tmp_stat; 2181da177e4SLinus Torvalds 2191da177e4SLinus Torvalds tmp_stat.f_type = linux_stat->f_type; 2201da177e4SLinus Torvalds tmp_stat.f_flags = 0; /* mount flags */ 2211da177e4SLinus Torvalds tmp_stat.f_fsize = linux_stat->f_frsize; 2221da177e4SLinus Torvalds tmp_stat.f_bsize = linux_stat->f_bsize; 2231da177e4SLinus Torvalds tmp_stat.f_blocks = linux_stat->f_blocks; 2241da177e4SLinus Torvalds tmp_stat.f_bfree = linux_stat->f_bfree; 2251da177e4SLinus Torvalds tmp_stat.f_bavail = linux_stat->f_bavail; 2261da177e4SLinus Torvalds tmp_stat.f_files = linux_stat->f_files; 2271da177e4SLinus Torvalds tmp_stat.f_ffree = linux_stat->f_ffree; 2281da177e4SLinus Torvalds tmp_stat.f_fsid = linux_stat->f_fsid; 2291da177e4SLinus Torvalds if (bufsiz > sizeof(tmp_stat)) 2301da177e4SLinus Torvalds bufsiz = sizeof(tmp_stat); 2311da177e4SLinus Torvalds return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0; 2321da177e4SLinus Torvalds } 2331da177e4SLinus Torvalds 234c8b91accSAl Viro SYSCALL_DEFINE3(osf_statfs, const char __user *, pathname, 235c8b91accSAl Viro struct osf_statfs __user *, buffer, unsigned long, bufsiz) 2361da177e4SLinus Torvalds { 2371da177e4SLinus Torvalds struct kstatfs linux_stat; 238c8b91accSAl Viro int error = user_statfs(pathname, &linux_stat); 2391da177e4SLinus Torvalds if (!error) 2401da177e4SLinus Torvalds error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz); 2411da177e4SLinus Torvalds return error; 2421da177e4SLinus Torvalds } 2431da177e4SLinus Torvalds 244e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE3(osf_fstatfs, unsigned long, fd, 245e5d9a90cSIvan Kokshaysky struct osf_statfs __user *, buffer, unsigned long, bufsiz) 2461da177e4SLinus Torvalds { 247c8b91accSAl Viro struct kstatfs linux_stat; 248c8b91accSAl Viro int error = fd_statfs(fd, &linux_stat); 249c8b91accSAl Viro if (!error) 250c8b91accSAl Viro error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz); 251c8b91accSAl Viro return error; 2521da177e4SLinus Torvalds } 2531da177e4SLinus Torvalds 2541da177e4SLinus Torvalds /* 2551da177e4SLinus Torvalds * Uhh.. OSF/1 mount parameters aren't exactly obvious.. 2561da177e4SLinus Torvalds * 2571da177e4SLinus Torvalds * Although to be frank, neither are the native Linux/i386 ones.. 2581da177e4SLinus Torvalds */ 2591da177e4SLinus Torvalds struct ufs_args { 2601da177e4SLinus Torvalds char __user *devname; 2611da177e4SLinus Torvalds int flags; 2621da177e4SLinus Torvalds uid_t exroot; 2631da177e4SLinus Torvalds }; 2641da177e4SLinus Torvalds 2651da177e4SLinus Torvalds struct cdfs_args { 2661da177e4SLinus Torvalds char __user *devname; 2671da177e4SLinus Torvalds int flags; 2681da177e4SLinus Torvalds uid_t exroot; 2691da177e4SLinus Torvalds 2701da177e4SLinus Torvalds /* This has lots more here, which Linux handles with the option block 2711da177e4SLinus Torvalds but I'm too lazy to do the translation into ASCII. */ 2721da177e4SLinus Torvalds }; 2731da177e4SLinus Torvalds 2741da177e4SLinus Torvalds struct procfs_args { 2751da177e4SLinus Torvalds char __user *devname; 2761da177e4SLinus Torvalds int flags; 2771da177e4SLinus Torvalds uid_t exroot; 2781da177e4SLinus Torvalds }; 2791da177e4SLinus Torvalds 2801da177e4SLinus Torvalds /* 2811da177e4SLinus Torvalds * We can't actually handle ufs yet, so we translate UFS mounts to 2821da177e4SLinus Torvalds * ext2fs mounts. I wouldn't mind a UFS filesystem, but the UFS 2831da177e4SLinus Torvalds * layout is so braindead it's a major headache doing it. 2841da177e4SLinus Torvalds * 2851da177e4SLinus Torvalds * Just how long ago was it written? OTOH our UFS driver may be still 2861da177e4SLinus Torvalds * unhappy with OSF UFS. [CHECKME] 2871da177e4SLinus Torvalds */ 2881da177e4SLinus Torvalds static int 2891da177e4SLinus Torvalds osf_ufs_mount(char *dirname, struct ufs_args __user *args, int flags) 2901da177e4SLinus Torvalds { 2911da177e4SLinus Torvalds int retval; 2921da177e4SLinus Torvalds struct cdfs_args tmp; 2931da177e4SLinus Torvalds char *devname; 2941da177e4SLinus Torvalds 2951da177e4SLinus Torvalds retval = -EFAULT; 2961da177e4SLinus Torvalds if (copy_from_user(&tmp, args, sizeof(tmp))) 2971da177e4SLinus Torvalds goto out; 2981da177e4SLinus Torvalds devname = getname(tmp.devname); 2991da177e4SLinus Torvalds retval = PTR_ERR(devname); 3001da177e4SLinus Torvalds if (IS_ERR(devname)) 3011da177e4SLinus Torvalds goto out; 3021da177e4SLinus Torvalds retval = do_mount(devname, dirname, "ext2", flags, NULL); 3031da177e4SLinus Torvalds putname(devname); 3041da177e4SLinus Torvalds out: 3051da177e4SLinus Torvalds return retval; 3061da177e4SLinus Torvalds } 3071da177e4SLinus Torvalds 3081da177e4SLinus Torvalds static int 3091da177e4SLinus Torvalds osf_cdfs_mount(char *dirname, struct cdfs_args __user *args, int flags) 3101da177e4SLinus Torvalds { 3111da177e4SLinus Torvalds int retval; 3121da177e4SLinus Torvalds struct cdfs_args tmp; 3131da177e4SLinus Torvalds char *devname; 3141da177e4SLinus Torvalds 3151da177e4SLinus Torvalds retval = -EFAULT; 3161da177e4SLinus Torvalds if (copy_from_user(&tmp, args, sizeof(tmp))) 3171da177e4SLinus Torvalds goto out; 3181da177e4SLinus Torvalds devname = getname(tmp.devname); 3191da177e4SLinus Torvalds retval = PTR_ERR(devname); 3201da177e4SLinus Torvalds if (IS_ERR(devname)) 3211da177e4SLinus Torvalds goto out; 3221da177e4SLinus Torvalds retval = do_mount(devname, dirname, "iso9660", flags, NULL); 3231da177e4SLinus Torvalds putname(devname); 3241da177e4SLinus Torvalds out: 3251da177e4SLinus Torvalds return retval; 3261da177e4SLinus Torvalds } 3271da177e4SLinus Torvalds 3281da177e4SLinus Torvalds static int 3291da177e4SLinus Torvalds osf_procfs_mount(char *dirname, struct procfs_args __user *args, int flags) 3301da177e4SLinus Torvalds { 3311da177e4SLinus Torvalds struct procfs_args tmp; 3321da177e4SLinus Torvalds 3331da177e4SLinus Torvalds if (copy_from_user(&tmp, args, sizeof(tmp))) 3341da177e4SLinus Torvalds return -EFAULT; 3351da177e4SLinus Torvalds 3361da177e4SLinus Torvalds return do_mount("", dirname, "proc", flags, NULL); 3371da177e4SLinus Torvalds } 3381da177e4SLinus Torvalds 339c7887325SDavid Howells SYSCALL_DEFINE4(osf_mount, unsigned long, typenr, const char __user *, path, 340e5d9a90cSIvan Kokshaysky int, flag, void __user *, data) 3411da177e4SLinus Torvalds { 34277079dbeSRoel Kluin int retval; 3431da177e4SLinus Torvalds char *name; 3441da177e4SLinus Torvalds 3451da177e4SLinus Torvalds name = getname(path); 3461da177e4SLinus Torvalds retval = PTR_ERR(name); 3471da177e4SLinus Torvalds if (IS_ERR(name)) 3481da177e4SLinus Torvalds goto out; 3491da177e4SLinus Torvalds switch (typenr) { 3501da177e4SLinus Torvalds case 1: 3511da177e4SLinus Torvalds retval = osf_ufs_mount(name, data, flag); 3521da177e4SLinus Torvalds break; 3531da177e4SLinus Torvalds case 6: 3541da177e4SLinus Torvalds retval = osf_cdfs_mount(name, data, flag); 3551da177e4SLinus Torvalds break; 3561da177e4SLinus Torvalds case 9: 3571da177e4SLinus Torvalds retval = osf_procfs_mount(name, data, flag); 3581da177e4SLinus Torvalds break; 3591da177e4SLinus Torvalds default: 36077079dbeSRoel Kluin retval = -EINVAL; 3611da177e4SLinus Torvalds printk("osf_mount(%ld, %x)\n", typenr, flag); 3621da177e4SLinus Torvalds } 3631da177e4SLinus Torvalds putname(name); 3641da177e4SLinus Torvalds out: 3651da177e4SLinus Torvalds return retval; 3661da177e4SLinus Torvalds } 3671da177e4SLinus Torvalds 368e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE1(osf_utsname, char __user *, name) 3691da177e4SLinus Torvalds { 3701da177e4SLinus Torvalds int error; 3711da177e4SLinus Torvalds 3721da177e4SLinus Torvalds down_read(&uts_sem); 3731da177e4SLinus Torvalds error = -EFAULT; 374e9ff3990SSerge E. Hallyn if (copy_to_user(name + 0, utsname()->sysname, 32)) 3751da177e4SLinus Torvalds goto out; 376e9ff3990SSerge E. Hallyn if (copy_to_user(name + 32, utsname()->nodename, 32)) 3771da177e4SLinus Torvalds goto out; 378e9ff3990SSerge E. Hallyn if (copy_to_user(name + 64, utsname()->release, 32)) 3791da177e4SLinus Torvalds goto out; 380e9ff3990SSerge E. Hallyn if (copy_to_user(name + 96, utsname()->version, 32)) 3811da177e4SLinus Torvalds goto out; 382e9ff3990SSerge E. Hallyn if (copy_to_user(name + 128, utsname()->machine, 32)) 3831da177e4SLinus Torvalds goto out; 3841da177e4SLinus Torvalds 3851da177e4SLinus Torvalds error = 0; 3861da177e4SLinus Torvalds out: 3871da177e4SLinus Torvalds up_read(&uts_sem); 3881da177e4SLinus Torvalds return error; 3891da177e4SLinus Torvalds } 3901da177e4SLinus Torvalds 391e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE0(getpagesize) 3921da177e4SLinus Torvalds { 3931da177e4SLinus Torvalds return PAGE_SIZE; 3941da177e4SLinus Torvalds } 3951da177e4SLinus Torvalds 396e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE0(getdtablesize) 3971da177e4SLinus Torvalds { 3989cfe015aSEric Dumazet return sysctl_nr_open; 3991da177e4SLinus Torvalds } 4001da177e4SLinus Torvalds 4011da177e4SLinus Torvalds /* 4021da177e4SLinus Torvalds * For compatibility with OSF/1 only. Use utsname(2) instead. 4031da177e4SLinus Torvalds */ 404e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE2(osf_getdomainname, char __user *, name, int, namelen) 4051da177e4SLinus Torvalds { 4061da177e4SLinus Torvalds unsigned len; 4071da177e4SLinus Torvalds int i; 4081da177e4SLinus Torvalds 4091da177e4SLinus Torvalds if (!access_ok(VERIFY_WRITE, name, namelen)) 4101da177e4SLinus Torvalds return -EFAULT; 4111da177e4SLinus Torvalds 4121da177e4SLinus Torvalds len = namelen; 41321c5977aSDan Rosenberg if (len > 32) 4141da177e4SLinus Torvalds len = 32; 4151da177e4SLinus Torvalds 4161da177e4SLinus Torvalds down_read(&uts_sem); 4171da177e4SLinus Torvalds for (i = 0; i < len; ++i) { 418e9ff3990SSerge E. Hallyn __put_user(utsname()->domainname[i], name + i); 419e9ff3990SSerge E. Hallyn if (utsname()->domainname[i] == '\0') 4201da177e4SLinus Torvalds break; 4211da177e4SLinus Torvalds } 4221da177e4SLinus Torvalds up_read(&uts_sem); 4231da177e4SLinus Torvalds 4241da177e4SLinus Torvalds return 0; 4251da177e4SLinus Torvalds } 4261da177e4SLinus Torvalds 4271da177e4SLinus Torvalds /* 4281da177e4SLinus Torvalds * The following stuff should move into a header file should it ever 4291da177e4SLinus Torvalds * be labeled "officially supported." Right now, there is just enough 4301da177e4SLinus Torvalds * support to avoid applications (such as tar) printing error 4311da177e4SLinus Torvalds * messages. The attributes are not really implemented. 4321da177e4SLinus Torvalds */ 4331da177e4SLinus Torvalds 4341da177e4SLinus Torvalds /* 4351da177e4SLinus Torvalds * Values for Property list entry flag 4361da177e4SLinus Torvalds */ 4371da177e4SLinus Torvalds #define PLE_PROPAGATE_ON_COPY 0x1 /* cp(1) will copy entry 4381da177e4SLinus Torvalds by default */ 4391da177e4SLinus Torvalds #define PLE_FLAG_MASK 0x1 /* Valid flag values */ 4401da177e4SLinus Torvalds #define PLE_FLAG_ALL -1 /* All flag value */ 4411da177e4SLinus Torvalds 4421da177e4SLinus Torvalds struct proplistname_args { 4431da177e4SLinus Torvalds unsigned int pl_mask; 4441da177e4SLinus Torvalds unsigned int pl_numnames; 4451da177e4SLinus Torvalds char **pl_names; 4461da177e4SLinus Torvalds }; 4471da177e4SLinus Torvalds 4481da177e4SLinus Torvalds union pl_args { 4491da177e4SLinus Torvalds struct setargs { 4501da177e4SLinus Torvalds char __user *path; 4511da177e4SLinus Torvalds long follow; 4521da177e4SLinus Torvalds long nbytes; 4531da177e4SLinus Torvalds char __user *buf; 4541da177e4SLinus Torvalds } set; 4551da177e4SLinus Torvalds struct fsetargs { 4561da177e4SLinus Torvalds long fd; 4571da177e4SLinus Torvalds long nbytes; 4581da177e4SLinus Torvalds char __user *buf; 4591da177e4SLinus Torvalds } fset; 4601da177e4SLinus Torvalds struct getargs { 4611da177e4SLinus Torvalds char __user *path; 4621da177e4SLinus Torvalds long follow; 4631da177e4SLinus Torvalds struct proplistname_args __user *name_args; 4641da177e4SLinus Torvalds long nbytes; 4651da177e4SLinus Torvalds char __user *buf; 4661da177e4SLinus Torvalds int __user *min_buf_size; 4671da177e4SLinus Torvalds } get; 4681da177e4SLinus Torvalds struct fgetargs { 4691da177e4SLinus Torvalds long fd; 4701da177e4SLinus Torvalds struct proplistname_args __user *name_args; 4711da177e4SLinus Torvalds long nbytes; 4721da177e4SLinus Torvalds char __user *buf; 4731da177e4SLinus Torvalds int __user *min_buf_size; 4741da177e4SLinus Torvalds } fget; 4751da177e4SLinus Torvalds struct delargs { 4761da177e4SLinus Torvalds char __user *path; 4771da177e4SLinus Torvalds long follow; 4781da177e4SLinus Torvalds struct proplistname_args __user *name_args; 4791da177e4SLinus Torvalds } del; 4801da177e4SLinus Torvalds struct fdelargs { 4811da177e4SLinus Torvalds long fd; 4821da177e4SLinus Torvalds struct proplistname_args __user *name_args; 4831da177e4SLinus Torvalds } fdel; 4841da177e4SLinus Torvalds }; 4851da177e4SLinus Torvalds 4861da177e4SLinus Torvalds enum pl_code { 4871da177e4SLinus Torvalds PL_SET = 1, PL_FSET = 2, 4881da177e4SLinus Torvalds PL_GET = 3, PL_FGET = 4, 4891da177e4SLinus Torvalds PL_DEL = 5, PL_FDEL = 6 4901da177e4SLinus Torvalds }; 4911da177e4SLinus Torvalds 492e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code, 493e5d9a90cSIvan Kokshaysky union pl_args __user *, args) 4941da177e4SLinus Torvalds { 4951da177e4SLinus Torvalds long error; 4961da177e4SLinus Torvalds int __user *min_buf_size_ptr; 4971da177e4SLinus Torvalds 4981da177e4SLinus Torvalds switch (code) { 4991da177e4SLinus Torvalds case PL_SET: 5001da177e4SLinus Torvalds if (get_user(error, &args->set.nbytes)) 5011da177e4SLinus Torvalds error = -EFAULT; 5021da177e4SLinus Torvalds break; 5031da177e4SLinus Torvalds case PL_FSET: 5041da177e4SLinus Torvalds if (get_user(error, &args->fset.nbytes)) 5051da177e4SLinus Torvalds error = -EFAULT; 5061da177e4SLinus Torvalds break; 5071da177e4SLinus Torvalds case PL_GET: 5081da177e4SLinus Torvalds error = get_user(min_buf_size_ptr, &args->get.min_buf_size); 5091da177e4SLinus Torvalds if (error) 5101da177e4SLinus Torvalds break; 5111da177e4SLinus Torvalds error = put_user(0, min_buf_size_ptr); 5121da177e4SLinus Torvalds break; 5131da177e4SLinus Torvalds case PL_FGET: 5141da177e4SLinus Torvalds error = get_user(min_buf_size_ptr, &args->fget.min_buf_size); 5151da177e4SLinus Torvalds if (error) 5161da177e4SLinus Torvalds break; 5171da177e4SLinus Torvalds error = put_user(0, min_buf_size_ptr); 5181da177e4SLinus Torvalds break; 5191da177e4SLinus Torvalds case PL_DEL: 5201da177e4SLinus Torvalds case PL_FDEL: 5211da177e4SLinus Torvalds error = 0; 5221da177e4SLinus Torvalds break; 5231da177e4SLinus Torvalds default: 5241da177e4SLinus Torvalds error = -EOPNOTSUPP; 5251da177e4SLinus Torvalds break; 5261da177e4SLinus Torvalds }; 5271da177e4SLinus Torvalds return error; 5281da177e4SLinus Torvalds } 5291da177e4SLinus Torvalds 530e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE2(osf_sigstack, struct sigstack __user *, uss, 531e5d9a90cSIvan Kokshaysky struct sigstack __user *, uoss) 5321da177e4SLinus Torvalds { 5331da177e4SLinus Torvalds unsigned long usp = rdusp(); 5341da177e4SLinus Torvalds unsigned long oss_sp = current->sas_ss_sp + current->sas_ss_size; 5351da177e4SLinus Torvalds unsigned long oss_os = on_sig_stack(usp); 5361da177e4SLinus Torvalds int error; 5371da177e4SLinus Torvalds 5381da177e4SLinus Torvalds if (uss) { 5391da177e4SLinus Torvalds void __user *ss_sp; 5401da177e4SLinus Torvalds 5411da177e4SLinus Torvalds error = -EFAULT; 5421da177e4SLinus Torvalds if (get_user(ss_sp, &uss->ss_sp)) 5431da177e4SLinus Torvalds goto out; 5441da177e4SLinus Torvalds 5451da177e4SLinus Torvalds /* If the current stack was set with sigaltstack, don't 5461da177e4SLinus Torvalds swap stacks while we are on it. */ 5471da177e4SLinus Torvalds error = -EPERM; 5481da177e4SLinus Torvalds if (current->sas_ss_sp && on_sig_stack(usp)) 5491da177e4SLinus Torvalds goto out; 5501da177e4SLinus Torvalds 5511da177e4SLinus Torvalds /* Since we don't know the extent of the stack, and we don't 5521da177e4SLinus Torvalds track onstack-ness, but rather calculate it, we must 5531da177e4SLinus Torvalds presume a size. Ho hum this interface is lossy. */ 5541da177e4SLinus Torvalds current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ; 5551da177e4SLinus Torvalds current->sas_ss_size = SIGSTKSZ; 5561da177e4SLinus Torvalds } 5571da177e4SLinus Torvalds 5581da177e4SLinus Torvalds if (uoss) { 5591da177e4SLinus Torvalds error = -EFAULT; 5601da177e4SLinus Torvalds if (! access_ok(VERIFY_WRITE, uoss, sizeof(*uoss)) 5611da177e4SLinus Torvalds || __put_user(oss_sp, &uoss->ss_sp) 5621da177e4SLinus Torvalds || __put_user(oss_os, &uoss->ss_onstack)) 5631da177e4SLinus Torvalds goto out; 5641da177e4SLinus Torvalds } 5651da177e4SLinus Torvalds 5661da177e4SLinus Torvalds error = 0; 5671da177e4SLinus Torvalds out: 5681da177e4SLinus Torvalds return error; 5691da177e4SLinus Torvalds } 5701da177e4SLinus Torvalds 571e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE3(osf_sysinfo, int, command, char __user *, buf, long, count) 5721da177e4SLinus Torvalds { 57331019075SJoe Perches const char *sysinfo_table[] = { 574e9ff3990SSerge E. Hallyn utsname()->sysname, 575e9ff3990SSerge E. Hallyn utsname()->nodename, 576e9ff3990SSerge E. Hallyn utsname()->release, 577e9ff3990SSerge E. Hallyn utsname()->version, 578e9ff3990SSerge E. Hallyn utsname()->machine, 5791da177e4SLinus Torvalds "alpha", /* instruction set architecture */ 5801da177e4SLinus Torvalds "dummy", /* hardware serial number */ 5811da177e4SLinus Torvalds "dummy", /* hardware manufacturer */ 5821da177e4SLinus Torvalds "dummy", /* secure RPC domain */ 5831da177e4SLinus Torvalds }; 5841da177e4SLinus Torvalds unsigned long offset; 58531019075SJoe Perches const char *res; 5861da177e4SLinus Torvalds long len, err = -EINVAL; 5871da177e4SLinus Torvalds 5881da177e4SLinus Torvalds offset = command-1; 58925c8716cSTobias Klauser if (offset >= ARRAY_SIZE(sysinfo_table)) { 5901da177e4SLinus Torvalds /* Digital UNIX has a few unpublished interfaces here */ 5911da177e4SLinus Torvalds printk("sysinfo(%d)", command); 5921da177e4SLinus Torvalds goto out; 5931da177e4SLinus Torvalds } 5941da177e4SLinus Torvalds 5951da177e4SLinus Torvalds down_read(&uts_sem); 5961da177e4SLinus Torvalds res = sysinfo_table[offset]; 5971da177e4SLinus Torvalds len = strlen(res)+1; 59821c5977aSDan Rosenberg if ((unsigned long)len > (unsigned long)count) 5991da177e4SLinus Torvalds len = count; 6001da177e4SLinus Torvalds if (copy_to_user(buf, res, len)) 6011da177e4SLinus Torvalds err = -EFAULT; 6021da177e4SLinus Torvalds else 6031da177e4SLinus Torvalds err = 0; 6041da177e4SLinus Torvalds up_read(&uts_sem); 6051da177e4SLinus Torvalds out: 6061da177e4SLinus Torvalds return err; 6071da177e4SLinus Torvalds } 6081da177e4SLinus Torvalds 609e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer, 610e5d9a90cSIvan Kokshaysky unsigned long, nbytes, int __user *, start, void __user *, arg) 6111da177e4SLinus Torvalds { 6121da177e4SLinus Torvalds unsigned long w; 6131da177e4SLinus Torvalds struct percpu_struct *cpu; 6141da177e4SLinus Torvalds 6151da177e4SLinus Torvalds switch (op) { 6161da177e4SLinus Torvalds case GSI_IEEE_FP_CONTROL: 6171da177e4SLinus Torvalds /* Return current software fp control & status bits. */ 6181da177e4SLinus Torvalds /* Note that DU doesn't verify available space here. */ 6191da177e4SLinus Torvalds 6201da177e4SLinus Torvalds w = current_thread_info()->ieee_state & IEEE_SW_MASK; 6211da177e4SLinus Torvalds w = swcr_update_status(w, rdfpcr()); 6221da177e4SLinus Torvalds if (put_user(w, (unsigned long __user *) buffer)) 6231da177e4SLinus Torvalds return -EFAULT; 6241da177e4SLinus Torvalds return 0; 6251da177e4SLinus Torvalds 6261da177e4SLinus Torvalds case GSI_IEEE_STATE_AT_SIGNAL: 6271da177e4SLinus Torvalds /* 6281da177e4SLinus Torvalds * Not sure anybody will ever use this weird stuff. These 6291da177e4SLinus Torvalds * ops can be used (under OSF/1) to set the fpcr that should 6301da177e4SLinus Torvalds * be used when a signal handler starts executing. 6311da177e4SLinus Torvalds */ 6321da177e4SLinus Torvalds break; 6331da177e4SLinus Torvalds 6341da177e4SLinus Torvalds case GSI_UACPROC: 6351da177e4SLinus Torvalds if (nbytes < sizeof(unsigned int)) 6361da177e4SLinus Torvalds return -EINVAL; 6372df7a7d1SSergei Trofimovich w = (current_thread_info()->flags >> ALPHA_UAC_SHIFT) & 6382df7a7d1SSergei Trofimovich UAC_BITMASK; 6391da177e4SLinus Torvalds if (put_user(w, (unsigned int __user *)buffer)) 6401da177e4SLinus Torvalds return -EFAULT; 6411da177e4SLinus Torvalds return 1; 6421da177e4SLinus Torvalds 6431da177e4SLinus Torvalds case GSI_PROC_TYPE: 6441da177e4SLinus Torvalds if (nbytes < sizeof(unsigned long)) 6451da177e4SLinus Torvalds return -EINVAL; 6461da177e4SLinus Torvalds cpu = (struct percpu_struct*) 6471da177e4SLinus Torvalds ((char*)hwrpb + hwrpb->processor_offset); 6481da177e4SLinus Torvalds w = cpu->type; 6491da177e4SLinus Torvalds if (put_user(w, (unsigned long __user*)buffer)) 6501da177e4SLinus Torvalds return -EFAULT; 6511da177e4SLinus Torvalds return 1; 6521da177e4SLinus Torvalds 6531da177e4SLinus Torvalds case GSI_GET_HWRPB: 65421c5977aSDan Rosenberg if (nbytes > sizeof(*hwrpb)) 6551da177e4SLinus Torvalds return -EINVAL; 6561da177e4SLinus Torvalds if (copy_to_user(buffer, hwrpb, nbytes) != 0) 6571da177e4SLinus Torvalds return -EFAULT; 6581da177e4SLinus Torvalds return 1; 6591da177e4SLinus Torvalds 6601da177e4SLinus Torvalds default: 6611da177e4SLinus Torvalds break; 6621da177e4SLinus Torvalds } 6631da177e4SLinus Torvalds 6641da177e4SLinus Torvalds return -EOPNOTSUPP; 6651da177e4SLinus Torvalds } 6661da177e4SLinus Torvalds 667e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer, 668e5d9a90cSIvan Kokshaysky unsigned long, nbytes, int __user *, start, void __user *, arg) 6691da177e4SLinus Torvalds { 6701da177e4SLinus Torvalds switch (op) { 6711da177e4SLinus Torvalds case SSI_IEEE_FP_CONTROL: { 6721da177e4SLinus Torvalds unsigned long swcr, fpcr; 6731da177e4SLinus Torvalds unsigned int *state; 6741da177e4SLinus Torvalds 6751da177e4SLinus Torvalds /* 6761da177e4SLinus Torvalds * Alpha Architecture Handbook 4.7.7.3: 6771da177e4SLinus Torvalds * To be fully IEEE compiant, we must track the current IEEE 678c3a2ddeeSSimon Arlott * exception state in software, because spurious bits can be 6791da177e4SLinus Torvalds * set in the trap shadow of a software-complete insn. 6801da177e4SLinus Torvalds */ 6811da177e4SLinus Torvalds 6821da177e4SLinus Torvalds if (get_user(swcr, (unsigned long __user *)buffer)) 6831da177e4SLinus Torvalds return -EFAULT; 6841da177e4SLinus Torvalds state = ¤t_thread_info()->ieee_state; 6851da177e4SLinus Torvalds 6861da177e4SLinus Torvalds /* Update softare trap enable bits. */ 6871da177e4SLinus Torvalds *state = (*state & ~IEEE_SW_MASK) | (swcr & IEEE_SW_MASK); 6881da177e4SLinus Torvalds 6891da177e4SLinus Torvalds /* Update the real fpcr. */ 6901da177e4SLinus Torvalds fpcr = rdfpcr() & FPCR_DYN_MASK; 6911da177e4SLinus Torvalds fpcr |= ieee_swcr_to_fpcr(swcr); 6921da177e4SLinus Torvalds wrfpcr(fpcr); 6931da177e4SLinus Torvalds 6941da177e4SLinus Torvalds return 0; 6951da177e4SLinus Torvalds } 6961da177e4SLinus Torvalds 6971da177e4SLinus Torvalds case SSI_IEEE_RAISE_EXCEPTION: { 6981da177e4SLinus Torvalds unsigned long exc, swcr, fpcr, fex; 6991da177e4SLinus Torvalds unsigned int *state; 7001da177e4SLinus Torvalds 7011da177e4SLinus Torvalds if (get_user(exc, (unsigned long __user *)buffer)) 7021da177e4SLinus Torvalds return -EFAULT; 7031da177e4SLinus Torvalds state = ¤t_thread_info()->ieee_state; 7041da177e4SLinus Torvalds exc &= IEEE_STATUS_MASK; 7051da177e4SLinus Torvalds 7061da177e4SLinus Torvalds /* Update softare trap enable bits. */ 7071da177e4SLinus Torvalds swcr = (*state & IEEE_SW_MASK) | exc; 7081da177e4SLinus Torvalds *state |= exc; 7091da177e4SLinus Torvalds 7101da177e4SLinus Torvalds /* Update the real fpcr. */ 7111da177e4SLinus Torvalds fpcr = rdfpcr(); 7121da177e4SLinus Torvalds fpcr |= ieee_swcr_to_fpcr(swcr); 7131da177e4SLinus Torvalds wrfpcr(fpcr); 7141da177e4SLinus Torvalds 7151da177e4SLinus Torvalds /* If any exceptions set by this call, and are unmasked, 7161da177e4SLinus Torvalds send a signal. Old exceptions are not signaled. */ 7171da177e4SLinus Torvalds fex = (exc >> IEEE_STATUS_TO_EXCSUM_SHIFT) & swcr; 7181da177e4SLinus Torvalds if (fex) { 7191da177e4SLinus Torvalds siginfo_t info; 7201da177e4SLinus Torvalds int si_code = 0; 7211da177e4SLinus Torvalds 7221da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_DNO) si_code = FPE_FLTUND; 7231da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_INE) si_code = FPE_FLTRES; 7241da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_UNF) si_code = FPE_FLTUND; 7251da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_OVF) si_code = FPE_FLTOVF; 7261da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_DZE) si_code = FPE_FLTDIV; 7271da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_INV) si_code = FPE_FLTINV; 7281da177e4SLinus Torvalds 7291da177e4SLinus Torvalds info.si_signo = SIGFPE; 7301da177e4SLinus Torvalds info.si_errno = 0; 7311da177e4SLinus Torvalds info.si_code = si_code; 7321da177e4SLinus Torvalds info.si_addr = NULL; /* FIXME */ 7331da177e4SLinus Torvalds send_sig_info(SIGFPE, &info, current); 7341da177e4SLinus Torvalds } 7351da177e4SLinus Torvalds return 0; 7361da177e4SLinus Torvalds } 7371da177e4SLinus Torvalds 7381da177e4SLinus Torvalds case SSI_IEEE_STATE_AT_SIGNAL: 7391da177e4SLinus Torvalds case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: 7401da177e4SLinus Torvalds /* 7411da177e4SLinus Torvalds * Not sure anybody will ever use this weird stuff. These 7421da177e4SLinus Torvalds * ops can be used (under OSF/1) to set the fpcr that should 7431da177e4SLinus Torvalds * be used when a signal handler starts executing. 7441da177e4SLinus Torvalds */ 7451da177e4SLinus Torvalds break; 7461da177e4SLinus Torvalds 7471da177e4SLinus Torvalds case SSI_NVPAIRS: { 7481da177e4SLinus Torvalds unsigned long v, w, i; 7491da177e4SLinus Torvalds unsigned int old, new; 7501da177e4SLinus Torvalds 7511da177e4SLinus Torvalds for (i = 0; i < nbytes; ++i) { 7521da177e4SLinus Torvalds 7531da177e4SLinus Torvalds if (get_user(v, 2*i + (unsigned int __user *)buffer)) 7541da177e4SLinus Torvalds return -EFAULT; 7551da177e4SLinus Torvalds if (get_user(w, 2*i + 1 + (unsigned int __user *)buffer)) 7561da177e4SLinus Torvalds return -EFAULT; 7571da177e4SLinus Torvalds switch (v) { 7581da177e4SLinus Torvalds case SSIN_UACPROC: 7591da177e4SLinus Torvalds again: 7601da177e4SLinus Torvalds old = current_thread_info()->flags; 7612df7a7d1SSergei Trofimovich new = old & ~(UAC_BITMASK << ALPHA_UAC_SHIFT); 7622df7a7d1SSergei Trofimovich new = new | (w & UAC_BITMASK) << ALPHA_UAC_SHIFT; 7631da177e4SLinus Torvalds if (cmpxchg(¤t_thread_info()->flags, 7641da177e4SLinus Torvalds old, new) != old) 7651da177e4SLinus Torvalds goto again; 7661da177e4SLinus Torvalds break; 7671da177e4SLinus Torvalds 7681da177e4SLinus Torvalds default: 7691da177e4SLinus Torvalds return -EOPNOTSUPP; 7701da177e4SLinus Torvalds } 7711da177e4SLinus Torvalds } 7721da177e4SLinus Torvalds return 0; 7731da177e4SLinus Torvalds } 7741da177e4SLinus Torvalds 7751da177e4SLinus Torvalds default: 7761da177e4SLinus Torvalds break; 7771da177e4SLinus Torvalds } 7781da177e4SLinus Torvalds 7791da177e4SLinus Torvalds return -EOPNOTSUPP; 7801da177e4SLinus Torvalds } 7811da177e4SLinus Torvalds 7821da177e4SLinus Torvalds /* Translations due to the fact that OSF's time_t is an int. Which 7831da177e4SLinus Torvalds affects all sorts of things, like timeval and itimerval. */ 7841da177e4SLinus Torvalds 7851da177e4SLinus Torvalds extern struct timezone sys_tz; 7861da177e4SLinus Torvalds 7871da177e4SLinus Torvalds struct timeval32 7881da177e4SLinus Torvalds { 7891da177e4SLinus Torvalds int tv_sec, tv_usec; 7901da177e4SLinus Torvalds }; 7911da177e4SLinus Torvalds 7921da177e4SLinus Torvalds struct itimerval32 7931da177e4SLinus Torvalds { 7941da177e4SLinus Torvalds struct timeval32 it_interval; 7951da177e4SLinus Torvalds struct timeval32 it_value; 7961da177e4SLinus Torvalds }; 7971da177e4SLinus Torvalds 7981da177e4SLinus Torvalds static inline long 7991da177e4SLinus Torvalds get_tv32(struct timeval *o, struct timeval32 __user *i) 8001da177e4SLinus Torvalds { 8011da177e4SLinus Torvalds return (!access_ok(VERIFY_READ, i, sizeof(*i)) || 8021da177e4SLinus Torvalds (__get_user(o->tv_sec, &i->tv_sec) | 8031da177e4SLinus Torvalds __get_user(o->tv_usec, &i->tv_usec))); 8041da177e4SLinus Torvalds } 8051da177e4SLinus Torvalds 8061da177e4SLinus Torvalds static inline long 8071da177e4SLinus Torvalds put_tv32(struct timeval32 __user *o, struct timeval *i) 8081da177e4SLinus Torvalds { 8091da177e4SLinus Torvalds return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || 8101da177e4SLinus Torvalds (__put_user(i->tv_sec, &o->tv_sec) | 8111da177e4SLinus Torvalds __put_user(i->tv_usec, &o->tv_usec))); 8121da177e4SLinus Torvalds } 8131da177e4SLinus Torvalds 8141da177e4SLinus Torvalds static inline long 8151da177e4SLinus Torvalds get_it32(struct itimerval *o, struct itimerval32 __user *i) 8161da177e4SLinus Torvalds { 8171da177e4SLinus Torvalds return (!access_ok(VERIFY_READ, i, sizeof(*i)) || 8181da177e4SLinus Torvalds (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) | 8191da177e4SLinus Torvalds __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) | 8201da177e4SLinus Torvalds __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) | 8211da177e4SLinus Torvalds __get_user(o->it_value.tv_usec, &i->it_value.tv_usec))); 8221da177e4SLinus Torvalds } 8231da177e4SLinus Torvalds 8241da177e4SLinus Torvalds static inline long 8251da177e4SLinus Torvalds put_it32(struct itimerval32 __user *o, struct itimerval *i) 8261da177e4SLinus Torvalds { 8271da177e4SLinus Torvalds return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || 8281da177e4SLinus Torvalds (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) | 8291da177e4SLinus Torvalds __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) | 8301da177e4SLinus Torvalds __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) | 8311da177e4SLinus Torvalds __put_user(i->it_value.tv_usec, &o->it_value.tv_usec))); 8321da177e4SLinus Torvalds } 8331da177e4SLinus Torvalds 8341da177e4SLinus Torvalds static inline void 8351da177e4SLinus Torvalds jiffies_to_timeval32(unsigned long jiffies, struct timeval32 *value) 8361da177e4SLinus Torvalds { 8371da177e4SLinus Torvalds value->tv_usec = (jiffies % HZ) * (1000000L / HZ); 8381da177e4SLinus Torvalds value->tv_sec = jiffies / HZ; 8391da177e4SLinus Torvalds } 8401da177e4SLinus Torvalds 841e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE2(osf_gettimeofday, struct timeval32 __user *, tv, 842e5d9a90cSIvan Kokshaysky struct timezone __user *, tz) 8431da177e4SLinus Torvalds { 8441da177e4SLinus Torvalds if (tv) { 8451da177e4SLinus Torvalds struct timeval ktv; 8461da177e4SLinus Torvalds do_gettimeofday(&ktv); 8471da177e4SLinus Torvalds if (put_tv32(tv, &ktv)) 8481da177e4SLinus Torvalds return -EFAULT; 8491da177e4SLinus Torvalds } 8501da177e4SLinus Torvalds if (tz) { 8511da177e4SLinus Torvalds if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) 8521da177e4SLinus Torvalds return -EFAULT; 8531da177e4SLinus Torvalds } 8541da177e4SLinus Torvalds return 0; 8551da177e4SLinus Torvalds } 8561da177e4SLinus Torvalds 857e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv, 858e5d9a90cSIvan Kokshaysky struct timezone __user *, tz) 8591da177e4SLinus Torvalds { 8601da177e4SLinus Torvalds struct timespec kts; 8611da177e4SLinus Torvalds struct timezone ktz; 8621da177e4SLinus Torvalds 8631da177e4SLinus Torvalds if (tv) { 8641da177e4SLinus Torvalds if (get_tv32((struct timeval *)&kts, tv)) 8651da177e4SLinus Torvalds return -EFAULT; 8661da177e4SLinus Torvalds } 8671da177e4SLinus Torvalds if (tz) { 8681da177e4SLinus Torvalds if (copy_from_user(&ktz, tz, sizeof(*tz))) 8691da177e4SLinus Torvalds return -EFAULT; 8701da177e4SLinus Torvalds } 8711da177e4SLinus Torvalds 8721da177e4SLinus Torvalds kts.tv_nsec *= 1000; 8731da177e4SLinus Torvalds 8741da177e4SLinus Torvalds return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); 8751da177e4SLinus Torvalds } 8761da177e4SLinus Torvalds 877e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE2(osf_getitimer, int, which, struct itimerval32 __user *, it) 8781da177e4SLinus Torvalds { 8791da177e4SLinus Torvalds struct itimerval kit; 8801da177e4SLinus Torvalds int error; 8811da177e4SLinus Torvalds 8821da177e4SLinus Torvalds error = do_getitimer(which, &kit); 8831da177e4SLinus Torvalds if (!error && put_it32(it, &kit)) 8841da177e4SLinus Torvalds error = -EFAULT; 8851da177e4SLinus Torvalds 8861da177e4SLinus Torvalds return error; 8871da177e4SLinus Torvalds } 8881da177e4SLinus Torvalds 889e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE3(osf_setitimer, int, which, struct itimerval32 __user *, in, 890e5d9a90cSIvan Kokshaysky struct itimerval32 __user *, out) 8911da177e4SLinus Torvalds { 8921da177e4SLinus Torvalds struct itimerval kin, kout; 8931da177e4SLinus Torvalds int error; 8941da177e4SLinus Torvalds 8951da177e4SLinus Torvalds if (in) { 8961da177e4SLinus Torvalds if (get_it32(&kin, in)) 8971da177e4SLinus Torvalds return -EFAULT; 8981da177e4SLinus Torvalds } else 8991da177e4SLinus Torvalds memset(&kin, 0, sizeof(kin)); 9001da177e4SLinus Torvalds 9011da177e4SLinus Torvalds error = do_setitimer(which, &kin, out ? &kout : NULL); 9021da177e4SLinus Torvalds if (error || !out) 9031da177e4SLinus Torvalds return error; 9041da177e4SLinus Torvalds 9051da177e4SLinus Torvalds if (put_it32(out, &kout)) 9061da177e4SLinus Torvalds return -EFAULT; 9071da177e4SLinus Torvalds 9081da177e4SLinus Torvalds return 0; 9091da177e4SLinus Torvalds 9101da177e4SLinus Torvalds } 9111da177e4SLinus Torvalds 912c7887325SDavid Howells SYSCALL_DEFINE2(osf_utimes, const char __user *, filename, 913e5d9a90cSIvan Kokshaysky struct timeval32 __user *, tvs) 9141da177e4SLinus Torvalds { 9151c710c89SUlrich Drepper struct timespec tv[2]; 9161da177e4SLinus Torvalds 9171da177e4SLinus Torvalds if (tvs) { 9181c710c89SUlrich Drepper struct timeval ktvs[2]; 9191da177e4SLinus Torvalds if (get_tv32(&ktvs[0], &tvs[0]) || 9201da177e4SLinus Torvalds get_tv32(&ktvs[1], &tvs[1])) 9211da177e4SLinus Torvalds return -EFAULT; 9221c710c89SUlrich Drepper 9231c710c89SUlrich Drepper if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 || 9241c710c89SUlrich Drepper ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000) 9251c710c89SUlrich Drepper return -EINVAL; 9261c710c89SUlrich Drepper 9271c710c89SUlrich Drepper tv[0].tv_sec = ktvs[0].tv_sec; 9281c710c89SUlrich Drepper tv[0].tv_nsec = 1000 * ktvs[0].tv_usec; 9291c710c89SUlrich Drepper tv[1].tv_sec = ktvs[1].tv_sec; 9301c710c89SUlrich Drepper tv[1].tv_nsec = 1000 * ktvs[1].tv_usec; 9311da177e4SLinus Torvalds } 9321da177e4SLinus Torvalds 9331c710c89SUlrich Drepper return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0); 9341da177e4SLinus Torvalds } 9351da177e4SLinus Torvalds 936e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE5(osf_select, int, n, fd_set __user *, inp, fd_set __user *, outp, 937e5d9a90cSIvan Kokshaysky fd_set __user *, exp, struct timeval32 __user *, tvp) 9381da177e4SLinus Torvalds { 93914e2acd8SArjan van de Ven struct timespec end_time, *to = NULL; 9401da177e4SLinus Torvalds if (tvp) { 9411da177e4SLinus Torvalds time_t sec, usec; 9421da177e4SLinus Torvalds 94314e2acd8SArjan van de Ven to = &end_time; 94414e2acd8SArjan van de Ven 9451da177e4SLinus Torvalds if (!access_ok(VERIFY_READ, tvp, sizeof(*tvp)) 9461da177e4SLinus Torvalds || __get_user(sec, &tvp->tv_sec) 9471da177e4SLinus Torvalds || __get_user(usec, &tvp->tv_usec)) { 948a2dcb44cSAl Viro return -EFAULT; 9491da177e4SLinus Torvalds } 9501da177e4SLinus Torvalds 9511da177e4SLinus Torvalds if (sec < 0 || usec < 0) 952a2dcb44cSAl Viro return -EINVAL; 9531da177e4SLinus Torvalds 95414e2acd8SArjan van de Ven if (poll_select_set_timeout(to, sec, usec * NSEC_PER_USEC)) 95514e2acd8SArjan van de Ven return -EINVAL; 95614e2acd8SArjan van de Ven 9571da177e4SLinus Torvalds } 9581da177e4SLinus Torvalds 9591da177e4SLinus Torvalds /* OSF does not copy back the remaining time. */ 96014e2acd8SArjan van de Ven return core_sys_select(n, inp, outp, exp, to); 9611da177e4SLinus Torvalds } 9621da177e4SLinus Torvalds 9631da177e4SLinus Torvalds struct rusage32 { 9641da177e4SLinus Torvalds struct timeval32 ru_utime; /* user time used */ 9651da177e4SLinus Torvalds struct timeval32 ru_stime; /* system time used */ 9661da177e4SLinus Torvalds long ru_maxrss; /* maximum resident set size */ 9671da177e4SLinus Torvalds long ru_ixrss; /* integral shared memory size */ 9681da177e4SLinus Torvalds long ru_idrss; /* integral unshared data size */ 9691da177e4SLinus Torvalds long ru_isrss; /* integral unshared stack size */ 9701da177e4SLinus Torvalds long ru_minflt; /* page reclaims */ 9711da177e4SLinus Torvalds long ru_majflt; /* page faults */ 9721da177e4SLinus Torvalds long ru_nswap; /* swaps */ 9731da177e4SLinus Torvalds long ru_inblock; /* block input operations */ 9741da177e4SLinus Torvalds long ru_oublock; /* block output operations */ 9751da177e4SLinus Torvalds long ru_msgsnd; /* messages sent */ 9761da177e4SLinus Torvalds long ru_msgrcv; /* messages received */ 9771da177e4SLinus Torvalds long ru_nsignals; /* signals received */ 9781da177e4SLinus Torvalds long ru_nvcsw; /* voluntary context switches */ 9791da177e4SLinus Torvalds long ru_nivcsw; /* involuntary " */ 9801da177e4SLinus Torvalds }; 9811da177e4SLinus Torvalds 982e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru) 9831da177e4SLinus Torvalds { 9841da177e4SLinus Torvalds struct rusage32 r; 9851da177e4SLinus Torvalds 9861da177e4SLinus Torvalds if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN) 9871da177e4SLinus Torvalds return -EINVAL; 9881da177e4SLinus Torvalds 9891da177e4SLinus Torvalds memset(&r, 0, sizeof(r)); 9901da177e4SLinus Torvalds switch (who) { 9911da177e4SLinus Torvalds case RUSAGE_SELF: 9921da177e4SLinus Torvalds jiffies_to_timeval32(current->utime, &r.ru_utime); 9931da177e4SLinus Torvalds jiffies_to_timeval32(current->stime, &r.ru_stime); 9941da177e4SLinus Torvalds r.ru_minflt = current->min_flt; 9951da177e4SLinus Torvalds r.ru_majflt = current->maj_flt; 9961da177e4SLinus Torvalds break; 9971da177e4SLinus Torvalds case RUSAGE_CHILDREN: 9981da177e4SLinus Torvalds jiffies_to_timeval32(current->signal->cutime, &r.ru_utime); 9991da177e4SLinus Torvalds jiffies_to_timeval32(current->signal->cstime, &r.ru_stime); 10001da177e4SLinus Torvalds r.ru_minflt = current->signal->cmin_flt; 10011da177e4SLinus Torvalds r.ru_majflt = current->signal->cmaj_flt; 10021da177e4SLinus Torvalds break; 10031da177e4SLinus Torvalds } 10041da177e4SLinus Torvalds 10051da177e4SLinus Torvalds return copy_to_user(ru, &r, sizeof(r)) ? -EFAULT : 0; 10061da177e4SLinus Torvalds } 10071da177e4SLinus Torvalds 1008e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE4(osf_wait4, pid_t, pid, int __user *, ustatus, int, options, 1009e5d9a90cSIvan Kokshaysky struct rusage32 __user *, ur) 10101da177e4SLinus Torvalds { 10111da177e4SLinus Torvalds struct rusage r; 10121da177e4SLinus Torvalds long ret, err; 101321c5977aSDan Rosenberg unsigned int status = 0; 10141da177e4SLinus Torvalds mm_segment_t old_fs; 10151da177e4SLinus Torvalds 10161da177e4SLinus Torvalds if (!ur) 10171da177e4SLinus Torvalds return sys_wait4(pid, ustatus, options, NULL); 10181da177e4SLinus Torvalds 10191da177e4SLinus Torvalds old_fs = get_fs(); 10201da177e4SLinus Torvalds 10211da177e4SLinus Torvalds set_fs (KERNEL_DS); 102221c5977aSDan Rosenberg ret = sys_wait4(pid, (unsigned int __user *) &status, options, 102321c5977aSDan Rosenberg (struct rusage __user *) &r); 10241da177e4SLinus Torvalds set_fs (old_fs); 10251da177e4SLinus Torvalds 10261da177e4SLinus Torvalds if (!access_ok(VERIFY_WRITE, ur, sizeof(*ur))) 10271da177e4SLinus Torvalds return -EFAULT; 10281da177e4SLinus Torvalds 10291da177e4SLinus Torvalds err = 0; 103021c5977aSDan Rosenberg err |= put_user(status, ustatus); 10311da177e4SLinus Torvalds err |= __put_user(r.ru_utime.tv_sec, &ur->ru_utime.tv_sec); 10321da177e4SLinus Torvalds err |= __put_user(r.ru_utime.tv_usec, &ur->ru_utime.tv_usec); 10331da177e4SLinus Torvalds err |= __put_user(r.ru_stime.tv_sec, &ur->ru_stime.tv_sec); 10341da177e4SLinus Torvalds err |= __put_user(r.ru_stime.tv_usec, &ur->ru_stime.tv_usec); 10351da177e4SLinus Torvalds err |= __put_user(r.ru_maxrss, &ur->ru_maxrss); 10361da177e4SLinus Torvalds err |= __put_user(r.ru_ixrss, &ur->ru_ixrss); 10371da177e4SLinus Torvalds err |= __put_user(r.ru_idrss, &ur->ru_idrss); 10381da177e4SLinus Torvalds err |= __put_user(r.ru_isrss, &ur->ru_isrss); 10391da177e4SLinus Torvalds err |= __put_user(r.ru_minflt, &ur->ru_minflt); 10401da177e4SLinus Torvalds err |= __put_user(r.ru_majflt, &ur->ru_majflt); 10411da177e4SLinus Torvalds err |= __put_user(r.ru_nswap, &ur->ru_nswap); 10421da177e4SLinus Torvalds err |= __put_user(r.ru_inblock, &ur->ru_inblock); 10431da177e4SLinus Torvalds err |= __put_user(r.ru_oublock, &ur->ru_oublock); 10441da177e4SLinus Torvalds err |= __put_user(r.ru_msgsnd, &ur->ru_msgsnd); 10451da177e4SLinus Torvalds err |= __put_user(r.ru_msgrcv, &ur->ru_msgrcv); 10461da177e4SLinus Torvalds err |= __put_user(r.ru_nsignals, &ur->ru_nsignals); 10471da177e4SLinus Torvalds err |= __put_user(r.ru_nvcsw, &ur->ru_nvcsw); 10481da177e4SLinus Torvalds err |= __put_user(r.ru_nivcsw, &ur->ru_nivcsw); 10491da177e4SLinus Torvalds 10501da177e4SLinus Torvalds return err ? err : ret; 10511da177e4SLinus Torvalds } 10521da177e4SLinus Torvalds 10531da177e4SLinus Torvalds /* 10541da177e4SLinus Torvalds * I don't know what the parameters are: the first one 10551da177e4SLinus Torvalds * seems to be a timeval pointer, and I suspect the second 10561da177e4SLinus Torvalds * one is the time remaining.. Ho humm.. No documentation. 10571da177e4SLinus Torvalds */ 1058e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE2(osf_usleep_thread, struct timeval32 __user *, sleep, 1059e5d9a90cSIvan Kokshaysky struct timeval32 __user *, remain) 10601da177e4SLinus Torvalds { 10611da177e4SLinus Torvalds struct timeval tmp; 10621da177e4SLinus Torvalds unsigned long ticks; 10631da177e4SLinus Torvalds 10641da177e4SLinus Torvalds if (get_tv32(&tmp, sleep)) 10651da177e4SLinus Torvalds goto fault; 10661da177e4SLinus Torvalds 106724d568edSNishanth Aravamudan ticks = timeval_to_jiffies(&tmp); 10681da177e4SLinus Torvalds 106920c6abd1SNishanth Aravamudan ticks = schedule_timeout_interruptible(ticks); 10701da177e4SLinus Torvalds 10711da177e4SLinus Torvalds if (remain) { 107224d568edSNishanth Aravamudan jiffies_to_timeval(ticks, &tmp); 10731da177e4SLinus Torvalds if (put_tv32(remain, &tmp)) 10741da177e4SLinus Torvalds goto fault; 10751da177e4SLinus Torvalds } 10761da177e4SLinus Torvalds 10771da177e4SLinus Torvalds return 0; 10781da177e4SLinus Torvalds fault: 10791da177e4SLinus Torvalds return -EFAULT; 10801da177e4SLinus Torvalds } 10811da177e4SLinus Torvalds 10821da177e4SLinus Torvalds 10831da177e4SLinus Torvalds struct timex32 { 10841da177e4SLinus Torvalds unsigned int modes; /* mode selector */ 10851da177e4SLinus Torvalds long offset; /* time offset (usec) */ 10861da177e4SLinus Torvalds long freq; /* frequency offset (scaled ppm) */ 10871da177e4SLinus Torvalds long maxerror; /* maximum error (usec) */ 10881da177e4SLinus Torvalds long esterror; /* estimated error (usec) */ 10891da177e4SLinus Torvalds int status; /* clock command/status */ 10901da177e4SLinus Torvalds long constant; /* pll time constant */ 10911da177e4SLinus Torvalds long precision; /* clock precision (usec) (read only) */ 10921da177e4SLinus Torvalds long tolerance; /* clock frequency tolerance (ppm) 10931da177e4SLinus Torvalds * (read only) 10941da177e4SLinus Torvalds */ 10951da177e4SLinus Torvalds struct timeval32 time; /* (read only) */ 10961da177e4SLinus Torvalds long tick; /* (modified) usecs between clock ticks */ 10971da177e4SLinus Torvalds 10981da177e4SLinus Torvalds long ppsfreq; /* pps frequency (scaled ppm) (ro) */ 10991da177e4SLinus Torvalds long jitter; /* pps jitter (us) (ro) */ 11001da177e4SLinus Torvalds int shift; /* interval duration (s) (shift) (ro) */ 11011da177e4SLinus Torvalds long stabil; /* pps stability (scaled ppm) (ro) */ 11021da177e4SLinus Torvalds long jitcnt; /* jitter limit exceeded (ro) */ 11031da177e4SLinus Torvalds long calcnt; /* calibration intervals (ro) */ 11041da177e4SLinus Torvalds long errcnt; /* calibration errors (ro) */ 11051da177e4SLinus Torvalds long stbcnt; /* stability limit exceeded (ro) */ 11061da177e4SLinus Torvalds 11071da177e4SLinus Torvalds int :32; int :32; int :32; int :32; 11081da177e4SLinus Torvalds int :32; int :32; int :32; int :32; 11091da177e4SLinus Torvalds int :32; int :32; int :32; int :32; 11101da177e4SLinus Torvalds }; 11111da177e4SLinus Torvalds 1112e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE1(old_adjtimex, struct timex32 __user *, txc_p) 11131da177e4SLinus Torvalds { 11141da177e4SLinus Torvalds struct timex txc; 11151da177e4SLinus Torvalds int ret; 11161da177e4SLinus Torvalds 11171da177e4SLinus Torvalds /* copy relevant bits of struct timex. */ 11181da177e4SLinus Torvalds if (copy_from_user(&txc, txc_p, offsetof(struct timex32, time)) || 11191da177e4SLinus Torvalds copy_from_user(&txc.tick, &txc_p->tick, sizeof(struct timex32) - 11201da177e4SLinus Torvalds offsetof(struct timex32, time))) 11211da177e4SLinus Torvalds return -EFAULT; 11221da177e4SLinus Torvalds 11231da177e4SLinus Torvalds ret = do_adjtimex(&txc); 11241da177e4SLinus Torvalds if (ret < 0) 11251da177e4SLinus Torvalds return ret; 11261da177e4SLinus Torvalds 11271da177e4SLinus Torvalds /* copy back to timex32 */ 11281da177e4SLinus Torvalds if (copy_to_user(txc_p, &txc, offsetof(struct timex32, time)) || 11291da177e4SLinus Torvalds (copy_to_user(&txc_p->tick, &txc.tick, sizeof(struct timex32) - 11301da177e4SLinus Torvalds offsetof(struct timex32, tick))) || 11311da177e4SLinus Torvalds (put_tv32(&txc_p->time, &txc.time))) 11321da177e4SLinus Torvalds return -EFAULT; 11331da177e4SLinus Torvalds 11341da177e4SLinus Torvalds return ret; 11351da177e4SLinus Torvalds } 11361da177e4SLinus Torvalds 11371da177e4SLinus Torvalds /* Get an address range which is currently unmapped. Similar to the 11381da177e4SLinus Torvalds generic version except that we know how to honor ADDR_LIMIT_32BIT. */ 11391da177e4SLinus Torvalds 11401da177e4SLinus Torvalds static unsigned long 11411da177e4SLinus Torvalds arch_get_unmapped_area_1(unsigned long addr, unsigned long len, 11421da177e4SLinus Torvalds unsigned long limit) 11431da177e4SLinus Torvalds { 11441da177e4SLinus Torvalds struct vm_area_struct *vma = find_vma(current->mm, addr); 11451da177e4SLinus Torvalds 11461da177e4SLinus Torvalds while (1) { 11471da177e4SLinus Torvalds /* At this point: (!vma || addr < vma->vm_end). */ 11481da177e4SLinus Torvalds if (limit - len < addr) 11491da177e4SLinus Torvalds return -ENOMEM; 11501da177e4SLinus Torvalds if (!vma || addr + len <= vma->vm_start) 11511da177e4SLinus Torvalds return addr; 11521da177e4SLinus Torvalds addr = vma->vm_end; 11531da177e4SLinus Torvalds vma = vma->vm_next; 11541da177e4SLinus Torvalds } 11551da177e4SLinus Torvalds } 11561da177e4SLinus Torvalds 11571da177e4SLinus Torvalds unsigned long 11581da177e4SLinus Torvalds arch_get_unmapped_area(struct file *filp, unsigned long addr, 11591da177e4SLinus Torvalds unsigned long len, unsigned long pgoff, 11601da177e4SLinus Torvalds unsigned long flags) 11611da177e4SLinus Torvalds { 11621da177e4SLinus Torvalds unsigned long limit; 11631da177e4SLinus Torvalds 11641da177e4SLinus Torvalds /* "32 bit" actually means 31 bit, since pointers sign extend. */ 11651da177e4SLinus Torvalds if (current->personality & ADDR_LIMIT_32BIT) 11661da177e4SLinus Torvalds limit = 0x80000000; 11671da177e4SLinus Torvalds else 11681da177e4SLinus Torvalds limit = TASK_SIZE; 11691da177e4SLinus Torvalds 11701da177e4SLinus Torvalds if (len > limit) 11711da177e4SLinus Torvalds return -ENOMEM; 11721da177e4SLinus Torvalds 11734b87b3b2SBenjamin Herrenschmidt if (flags & MAP_FIXED) 11744b87b3b2SBenjamin Herrenschmidt return addr; 11754b87b3b2SBenjamin Herrenschmidt 11761da177e4SLinus Torvalds /* First, see if the given suggestion fits. 11771da177e4SLinus Torvalds 11781da177e4SLinus Torvalds The OSF/1 loader (/sbin/loader) relies on us returning an 11791da177e4SLinus Torvalds address larger than the requested if one exists, which is 11801da177e4SLinus Torvalds a terribly broken way to program. 11811da177e4SLinus Torvalds 11821da177e4SLinus Torvalds That said, I can see the use in being able to suggest not 11831da177e4SLinus Torvalds merely specific addresses, but regions of memory -- perhaps 11841da177e4SLinus Torvalds this feature should be incorporated into all ports? */ 11851da177e4SLinus Torvalds 11861da177e4SLinus Torvalds if (addr) { 11871da177e4SLinus Torvalds addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit); 11881da177e4SLinus Torvalds if (addr != (unsigned long) -ENOMEM) 11891da177e4SLinus Torvalds return addr; 11901da177e4SLinus Torvalds } 11911da177e4SLinus Torvalds 11921da177e4SLinus Torvalds /* Next, try allocating at TASK_UNMAPPED_BASE. */ 11931da177e4SLinus Torvalds addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE), 11941da177e4SLinus Torvalds len, limit); 11951da177e4SLinus Torvalds if (addr != (unsigned long) -ENOMEM) 11961da177e4SLinus Torvalds return addr; 11971da177e4SLinus Torvalds 11981da177e4SLinus Torvalds /* Finally, try allocating in low memory. */ 11991da177e4SLinus Torvalds addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit); 12001da177e4SLinus Torvalds 12011da177e4SLinus Torvalds return addr; 12021da177e4SLinus Torvalds } 12031da177e4SLinus Torvalds 12041da177e4SLinus Torvalds #ifdef CONFIG_OSF4_COMPAT 12051da177e4SLinus Torvalds 12061da177e4SLinus Torvalds /* Clear top 32 bits of iov_len in the user's buffer for 12071da177e4SLinus Torvalds compatibility with old versions of OSF/1 where iov_len 12081da177e4SLinus Torvalds was defined as int. */ 12091da177e4SLinus Torvalds static int 12101da177e4SLinus Torvalds osf_fix_iov_len(const struct iovec __user *iov, unsigned long count) 12111da177e4SLinus Torvalds { 12121da177e4SLinus Torvalds unsigned long i; 12131da177e4SLinus Torvalds 12141da177e4SLinus Torvalds for (i = 0 ; i < count ; i++) { 12151da177e4SLinus Torvalds int __user *iov_len_high = (int __user *)&iov[i].iov_len + 1; 12161da177e4SLinus Torvalds 12171da177e4SLinus Torvalds if (put_user(0, iov_len_high)) 12181da177e4SLinus Torvalds return -EFAULT; 12191da177e4SLinus Torvalds } 12201da177e4SLinus Torvalds return 0; 12211da177e4SLinus Torvalds } 12221da177e4SLinus Torvalds 1223e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE3(osf_readv, unsigned long, fd, 1224e5d9a90cSIvan Kokshaysky const struct iovec __user *, vector, unsigned long, count) 12251da177e4SLinus Torvalds { 12261da177e4SLinus Torvalds if (unlikely(personality(current->personality) == PER_OSF4)) 12271da177e4SLinus Torvalds if (osf_fix_iov_len(vector, count)) 12281da177e4SLinus Torvalds return -EFAULT; 12291da177e4SLinus Torvalds return sys_readv(fd, vector, count); 12301da177e4SLinus Torvalds } 12311da177e4SLinus Torvalds 1232e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE3(osf_writev, unsigned long, fd, 1233e5d9a90cSIvan Kokshaysky const struct iovec __user *, vector, unsigned long, count) 12341da177e4SLinus Torvalds { 12351da177e4SLinus Torvalds if (unlikely(personality(current->personality) == PER_OSF4)) 12361da177e4SLinus Torvalds if (osf_fix_iov_len(vector, count)) 12371da177e4SLinus Torvalds return -EFAULT; 12381da177e4SLinus Torvalds return sys_writev(fd, vector, count); 12391da177e4SLinus Torvalds } 12401da177e4SLinus Torvalds 12411da177e4SLinus Torvalds #endif 1242