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/utsname.h> 261da177e4SLinus Torvalds #include <linux/time.h> 271da177e4SLinus Torvalds #include <linux/timex.h> 281da177e4SLinus Torvalds #include <linux/major.h> 291da177e4SLinus Torvalds #include <linux/stat.h> 301da177e4SLinus Torvalds #include <linux/mman.h> 311da177e4SLinus Torvalds #include <linux/shm.h> 321da177e4SLinus Torvalds #include <linux/poll.h> 331da177e4SLinus Torvalds #include <linux/file.h> 341da177e4SLinus Torvalds #include <linux/types.h> 351da177e4SLinus Torvalds #include <linux/ipc.h> 361da177e4SLinus Torvalds #include <linux/namei.h> 371da177e4SLinus Torvalds #include <linux/uio.h> 381da177e4SLinus Torvalds #include <linux/vfs.h> 394fb3a538SDipankar Sarma #include <linux/rcupdate.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 /* 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 lock_kernel(); 731da177e4SLinus Torvalds mm = current->mm; 741da177e4SLinus Torvalds mm->end_code = bss_start + bss_len; 752444e56bSIvan Kokshaysky mm->start_brk = bss_start + bss_len; 761da177e4SLinus Torvalds mm->brk = bss_start + bss_len; 771da177e4SLinus Torvalds #if 0 781da177e4SLinus Torvalds printk("set_program_attributes(%lx %lx %lx %lx)\n", 791da177e4SLinus Torvalds text_start, text_len, bss_start, bss_len); 801da177e4SLinus Torvalds #endif 811da177e4SLinus Torvalds unlock_kernel(); 821da177e4SLinus Torvalds return 0; 831da177e4SLinus Torvalds } 841da177e4SLinus Torvalds 851da177e4SLinus Torvalds /* 861da177e4SLinus Torvalds * OSF/1 directory handling functions... 871da177e4SLinus Torvalds * 881da177e4SLinus Torvalds * The "getdents()" interface is much more sane: the "basep" stuff is 891da177e4SLinus Torvalds * braindamage (it can't really handle filesystems where the directory 901da177e4SLinus Torvalds * offset differences aren't the same as "d_reclen"). 911da177e4SLinus Torvalds */ 921da177e4SLinus Torvalds #define NAME_OFFSET offsetof (struct osf_dirent, d_name) 931da177e4SLinus Torvalds 941da177e4SLinus Torvalds struct osf_dirent { 951da177e4SLinus Torvalds unsigned int d_ino; 961da177e4SLinus Torvalds unsigned short d_reclen; 971da177e4SLinus Torvalds unsigned short d_namlen; 981da177e4SLinus Torvalds char d_name[1]; 991da177e4SLinus Torvalds }; 1001da177e4SLinus Torvalds 1011da177e4SLinus Torvalds struct osf_dirent_callback { 1021da177e4SLinus Torvalds struct osf_dirent __user *dirent; 1031da177e4SLinus Torvalds long __user *basep; 1041da177e4SLinus Torvalds unsigned int count; 1051da177e4SLinus Torvalds int error; 1061da177e4SLinus Torvalds }; 1071da177e4SLinus Torvalds 1081da177e4SLinus Torvalds static int 1091da177e4SLinus Torvalds osf_filldir(void *__buf, const char *name, int namlen, loff_t offset, 110afefdbb2SDavid Howells u64 ino, unsigned int d_type) 1111da177e4SLinus Torvalds { 1121da177e4SLinus Torvalds struct osf_dirent __user *dirent; 1131da177e4SLinus Torvalds struct osf_dirent_callback *buf = (struct osf_dirent_callback *) __buf; 114180e53a7SMilind Arun Choudhary unsigned int reclen = ALIGN(NAME_OFFSET + namlen + 1, sizeof(u32)); 115afefdbb2SDavid Howells unsigned int d_ino; 1161da177e4SLinus Torvalds 1171da177e4SLinus Torvalds buf->error = -EINVAL; /* only used if we fail */ 1181da177e4SLinus Torvalds if (reclen > buf->count) 1191da177e4SLinus Torvalds return -EINVAL; 120afefdbb2SDavid Howells d_ino = ino; 121645e68edSAl Viro if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) { 122645e68edSAl Viro buf->error = -EOVERFLOW; 123afefdbb2SDavid Howells return -EOVERFLOW; 124645e68edSAl Viro } 1251da177e4SLinus Torvalds if (buf->basep) { 1261da177e4SLinus Torvalds if (put_user(offset, buf->basep)) 127645e68edSAl Viro goto Efault; 1281da177e4SLinus Torvalds buf->basep = NULL; 1291da177e4SLinus Torvalds } 1301da177e4SLinus Torvalds dirent = buf->dirent; 131645e68edSAl Viro if (put_user(d_ino, &dirent->d_ino) || 132645e68edSAl Viro put_user(namlen, &dirent->d_namlen) || 133645e68edSAl Viro put_user(reclen, &dirent->d_reclen) || 134645e68edSAl Viro copy_to_user(dirent->d_name, name, namlen) || 1351da177e4SLinus Torvalds put_user(0, dirent->d_name + namlen)) 136645e68edSAl Viro goto Efault; 1371da177e4SLinus Torvalds dirent = (void __user *)dirent + reclen; 1381da177e4SLinus Torvalds buf->dirent = dirent; 1391da177e4SLinus Torvalds buf->count -= reclen; 1401da177e4SLinus Torvalds return 0; 141645e68edSAl Viro Efault: 142645e68edSAl Viro buf->error = -EFAULT; 143645e68edSAl Viro return -EFAULT; 1441da177e4SLinus Torvalds } 1451da177e4SLinus Torvalds 146e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE4(osf_getdirentries, unsigned int, fd, 147e5d9a90cSIvan Kokshaysky struct osf_dirent __user *, dirent, unsigned int, count, 148e5d9a90cSIvan Kokshaysky long __user *, basep) 1491da177e4SLinus Torvalds { 1501da177e4SLinus Torvalds int error; 1511da177e4SLinus Torvalds struct file *file; 1521da177e4SLinus Torvalds struct osf_dirent_callback buf; 1531da177e4SLinus Torvalds 1541da177e4SLinus Torvalds error = -EBADF; 1551da177e4SLinus Torvalds file = fget(fd); 1561da177e4SLinus Torvalds if (!file) 1571da177e4SLinus Torvalds goto out; 1581da177e4SLinus Torvalds 1591da177e4SLinus Torvalds buf.dirent = dirent; 1601da177e4SLinus Torvalds buf.basep = basep; 1611da177e4SLinus Torvalds buf.count = count; 1621da177e4SLinus Torvalds buf.error = 0; 1631da177e4SLinus Torvalds 1641da177e4SLinus Torvalds error = vfs_readdir(file, osf_filldir, &buf); 16553c9c5c0SAl Viro if (error >= 0) 1661da177e4SLinus Torvalds error = buf.error; 1671da177e4SLinus Torvalds if (count != buf.count) 1681da177e4SLinus Torvalds error = count - buf.count; 1691da177e4SLinus Torvalds 1701da177e4SLinus Torvalds fput(file); 1711da177e4SLinus Torvalds out: 1721da177e4SLinus Torvalds return error; 1731da177e4SLinus Torvalds } 1741da177e4SLinus Torvalds 1751da177e4SLinus Torvalds #undef NAME_OFFSET 1761da177e4SLinus Torvalds 177e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE6(osf_mmap, unsigned long, addr, unsigned long, len, 178e5d9a90cSIvan Kokshaysky unsigned long, prot, unsigned long, flags, unsigned long, fd, 179e5d9a90cSIvan Kokshaysky unsigned long, off) 1801da177e4SLinus Torvalds { 181f8b72560SAl Viro unsigned long ret = -EINVAL; 1821da177e4SLinus Torvalds 1831da177e4SLinus Torvalds #if 0 1841da177e4SLinus Torvalds if (flags & (_MAP_HASSEMAPHORE | _MAP_INHERIT | _MAP_UNALIGNED)) 1851da177e4SLinus Torvalds printk("%s: unimplemented OSF mmap flags %04lx\n", 1861da177e4SLinus Torvalds current->comm, flags); 1871da177e4SLinus Torvalds #endif 188f8b72560SAl Viro if ((off + PAGE_ALIGN(len)) < off) 1891da177e4SLinus Torvalds goto out; 190f8b72560SAl Viro if (off & ~PAGE_MASK) 191f8b72560SAl Viro goto out; 192f8b72560SAl Viro ret = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); 1931da177e4SLinus Torvalds out: 1941da177e4SLinus Torvalds return ret; 1951da177e4SLinus Torvalds } 1961da177e4SLinus Torvalds 1971da177e4SLinus Torvalds 1981da177e4SLinus Torvalds /* 1991da177e4SLinus Torvalds * The OSF/1 statfs structure is much larger, but this should 2001da177e4SLinus Torvalds * match the beginning, at least. 2011da177e4SLinus Torvalds */ 2021da177e4SLinus Torvalds struct osf_statfs { 2031da177e4SLinus Torvalds short f_type; 2041da177e4SLinus Torvalds short f_flags; 2051da177e4SLinus Torvalds int f_fsize; 2061da177e4SLinus Torvalds int f_bsize; 2071da177e4SLinus Torvalds int f_blocks; 2081da177e4SLinus Torvalds int f_bfree; 2091da177e4SLinus Torvalds int f_bavail; 2101da177e4SLinus Torvalds int f_files; 2111da177e4SLinus Torvalds int f_ffree; 2121da177e4SLinus Torvalds __kernel_fsid_t f_fsid; 2131da177e4SLinus Torvalds }; 2141da177e4SLinus Torvalds 2151da177e4SLinus Torvalds static int 2161da177e4SLinus Torvalds linux_to_osf_statfs(struct kstatfs *linux_stat, struct osf_statfs __user *osf_stat, 2171da177e4SLinus Torvalds unsigned long bufsiz) 2181da177e4SLinus Torvalds { 2191da177e4SLinus Torvalds struct osf_statfs tmp_stat; 2201da177e4SLinus Torvalds 2211da177e4SLinus Torvalds tmp_stat.f_type = linux_stat->f_type; 2221da177e4SLinus Torvalds tmp_stat.f_flags = 0; /* mount flags */ 2231da177e4SLinus Torvalds tmp_stat.f_fsize = linux_stat->f_frsize; 2241da177e4SLinus Torvalds tmp_stat.f_bsize = linux_stat->f_bsize; 2251da177e4SLinus Torvalds tmp_stat.f_blocks = linux_stat->f_blocks; 2261da177e4SLinus Torvalds tmp_stat.f_bfree = linux_stat->f_bfree; 2271da177e4SLinus Torvalds tmp_stat.f_bavail = linux_stat->f_bavail; 2281da177e4SLinus Torvalds tmp_stat.f_files = linux_stat->f_files; 2291da177e4SLinus Torvalds tmp_stat.f_ffree = linux_stat->f_ffree; 2301da177e4SLinus Torvalds tmp_stat.f_fsid = linux_stat->f_fsid; 2311da177e4SLinus Torvalds if (bufsiz > sizeof(tmp_stat)) 2321da177e4SLinus Torvalds bufsiz = sizeof(tmp_stat); 2331da177e4SLinus Torvalds return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0; 2341da177e4SLinus Torvalds } 2351da177e4SLinus Torvalds 2361da177e4SLinus Torvalds static int 2371da177e4SLinus Torvalds do_osf_statfs(struct dentry * dentry, struct osf_statfs __user *buffer, 2381da177e4SLinus Torvalds unsigned long bufsiz) 2391da177e4SLinus Torvalds { 2401da177e4SLinus Torvalds struct kstatfs linux_stat; 241726c3342SDavid Howells int error = vfs_statfs(dentry, &linux_stat); 2421da177e4SLinus Torvalds if (!error) 2431da177e4SLinus Torvalds error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz); 2441da177e4SLinus Torvalds return error; 2451da177e4SLinus Torvalds } 2461da177e4SLinus Torvalds 247e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE3(osf_statfs, char __user *, pathname, 248e5d9a90cSIvan Kokshaysky struct osf_statfs __user *, buffer, unsigned long, bufsiz) 2491da177e4SLinus Torvalds { 2502d8f3038SAl Viro struct path path; 2511da177e4SLinus Torvalds int retval; 2521da177e4SLinus Torvalds 2532d8f3038SAl Viro retval = user_path(pathname, &path); 2541da177e4SLinus Torvalds if (!retval) { 2552d8f3038SAl Viro retval = do_osf_statfs(path.dentry, buffer, bufsiz); 2562d8f3038SAl Viro path_put(&path); 2571da177e4SLinus Torvalds } 2581da177e4SLinus Torvalds return retval; 2591da177e4SLinus Torvalds } 2601da177e4SLinus Torvalds 261e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE3(osf_fstatfs, unsigned long, fd, 262e5d9a90cSIvan Kokshaysky struct osf_statfs __user *, buffer, unsigned long, bufsiz) 2631da177e4SLinus Torvalds { 2641da177e4SLinus Torvalds struct file *file; 2651da177e4SLinus Torvalds int retval; 2661da177e4SLinus Torvalds 2671da177e4SLinus Torvalds retval = -EBADF; 2681da177e4SLinus Torvalds file = fget(fd); 2691da177e4SLinus Torvalds if (file) { 2708ac0352bSJosef Sipek retval = do_osf_statfs(file->f_path.dentry, buffer, bufsiz); 2711da177e4SLinus Torvalds fput(file); 2721da177e4SLinus Torvalds } 2731da177e4SLinus Torvalds return retval; 2741da177e4SLinus Torvalds } 2751da177e4SLinus Torvalds 2761da177e4SLinus Torvalds /* 2771da177e4SLinus Torvalds * Uhh.. OSF/1 mount parameters aren't exactly obvious.. 2781da177e4SLinus Torvalds * 2791da177e4SLinus Torvalds * Although to be frank, neither are the native Linux/i386 ones.. 2801da177e4SLinus Torvalds */ 2811da177e4SLinus Torvalds struct ufs_args { 2821da177e4SLinus Torvalds char __user *devname; 2831da177e4SLinus Torvalds int flags; 2841da177e4SLinus Torvalds uid_t exroot; 2851da177e4SLinus Torvalds }; 2861da177e4SLinus Torvalds 2871da177e4SLinus Torvalds struct cdfs_args { 2881da177e4SLinus Torvalds char __user *devname; 2891da177e4SLinus Torvalds int flags; 2901da177e4SLinus Torvalds uid_t exroot; 2911da177e4SLinus Torvalds 2921da177e4SLinus Torvalds /* This has lots more here, which Linux handles with the option block 2931da177e4SLinus Torvalds but I'm too lazy to do the translation into ASCII. */ 2941da177e4SLinus Torvalds }; 2951da177e4SLinus Torvalds 2961da177e4SLinus Torvalds struct procfs_args { 2971da177e4SLinus Torvalds char __user *devname; 2981da177e4SLinus Torvalds int flags; 2991da177e4SLinus Torvalds uid_t exroot; 3001da177e4SLinus Torvalds }; 3011da177e4SLinus Torvalds 3021da177e4SLinus Torvalds /* 3031da177e4SLinus Torvalds * We can't actually handle ufs yet, so we translate UFS mounts to 3041da177e4SLinus Torvalds * ext2fs mounts. I wouldn't mind a UFS filesystem, but the UFS 3051da177e4SLinus Torvalds * layout is so braindead it's a major headache doing it. 3061da177e4SLinus Torvalds * 3071da177e4SLinus Torvalds * Just how long ago was it written? OTOH our UFS driver may be still 3081da177e4SLinus Torvalds * unhappy with OSF UFS. [CHECKME] 3091da177e4SLinus Torvalds */ 3101da177e4SLinus Torvalds static int 3111da177e4SLinus Torvalds osf_ufs_mount(char *dirname, struct ufs_args __user *args, int flags) 3121da177e4SLinus Torvalds { 3131da177e4SLinus Torvalds int retval; 3141da177e4SLinus Torvalds struct cdfs_args tmp; 3151da177e4SLinus Torvalds char *devname; 3161da177e4SLinus Torvalds 3171da177e4SLinus Torvalds retval = -EFAULT; 3181da177e4SLinus Torvalds if (copy_from_user(&tmp, args, sizeof(tmp))) 3191da177e4SLinus Torvalds goto out; 3201da177e4SLinus Torvalds devname = getname(tmp.devname); 3211da177e4SLinus Torvalds retval = PTR_ERR(devname); 3221da177e4SLinus Torvalds if (IS_ERR(devname)) 3231da177e4SLinus Torvalds goto out; 3241da177e4SLinus Torvalds retval = do_mount(devname, dirname, "ext2", flags, NULL); 3251da177e4SLinus Torvalds putname(devname); 3261da177e4SLinus Torvalds out: 3271da177e4SLinus Torvalds return retval; 3281da177e4SLinus Torvalds } 3291da177e4SLinus Torvalds 3301da177e4SLinus Torvalds static int 3311da177e4SLinus Torvalds osf_cdfs_mount(char *dirname, struct cdfs_args __user *args, int flags) 3321da177e4SLinus Torvalds { 3331da177e4SLinus Torvalds int retval; 3341da177e4SLinus Torvalds struct cdfs_args tmp; 3351da177e4SLinus Torvalds char *devname; 3361da177e4SLinus Torvalds 3371da177e4SLinus Torvalds retval = -EFAULT; 3381da177e4SLinus Torvalds if (copy_from_user(&tmp, args, sizeof(tmp))) 3391da177e4SLinus Torvalds goto out; 3401da177e4SLinus Torvalds devname = getname(tmp.devname); 3411da177e4SLinus Torvalds retval = PTR_ERR(devname); 3421da177e4SLinus Torvalds if (IS_ERR(devname)) 3431da177e4SLinus Torvalds goto out; 3441da177e4SLinus Torvalds retval = do_mount(devname, dirname, "iso9660", flags, NULL); 3451da177e4SLinus Torvalds putname(devname); 3461da177e4SLinus Torvalds out: 3471da177e4SLinus Torvalds return retval; 3481da177e4SLinus Torvalds } 3491da177e4SLinus Torvalds 3501da177e4SLinus Torvalds static int 3511da177e4SLinus Torvalds osf_procfs_mount(char *dirname, struct procfs_args __user *args, int flags) 3521da177e4SLinus Torvalds { 3531da177e4SLinus Torvalds struct procfs_args tmp; 3541da177e4SLinus Torvalds 3551da177e4SLinus Torvalds if (copy_from_user(&tmp, args, sizeof(tmp))) 3561da177e4SLinus Torvalds return -EFAULT; 3571da177e4SLinus Torvalds 3581da177e4SLinus Torvalds return do_mount("", dirname, "proc", flags, NULL); 3591da177e4SLinus Torvalds } 3601da177e4SLinus Torvalds 361e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE4(osf_mount, unsigned long, typenr, char __user *, path, 362e5d9a90cSIvan Kokshaysky int, flag, void __user *, data) 3631da177e4SLinus Torvalds { 36477079dbeSRoel Kluin int retval; 3651da177e4SLinus Torvalds char *name; 3661da177e4SLinus Torvalds 3671da177e4SLinus Torvalds name = getname(path); 3681da177e4SLinus Torvalds retval = PTR_ERR(name); 3691da177e4SLinus Torvalds if (IS_ERR(name)) 3701da177e4SLinus Torvalds goto out; 3711da177e4SLinus Torvalds switch (typenr) { 3721da177e4SLinus Torvalds case 1: 3731da177e4SLinus Torvalds retval = osf_ufs_mount(name, data, flag); 3741da177e4SLinus Torvalds break; 3751da177e4SLinus Torvalds case 6: 3761da177e4SLinus Torvalds retval = osf_cdfs_mount(name, data, flag); 3771da177e4SLinus Torvalds break; 3781da177e4SLinus Torvalds case 9: 3791da177e4SLinus Torvalds retval = osf_procfs_mount(name, data, flag); 3801da177e4SLinus Torvalds break; 3811da177e4SLinus Torvalds default: 38277079dbeSRoel Kluin retval = -EINVAL; 3831da177e4SLinus Torvalds printk("osf_mount(%ld, %x)\n", typenr, flag); 3841da177e4SLinus Torvalds } 3851da177e4SLinus Torvalds putname(name); 3861da177e4SLinus Torvalds out: 3871da177e4SLinus Torvalds return retval; 3881da177e4SLinus Torvalds } 3891da177e4SLinus Torvalds 390e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE1(osf_utsname, char __user *, name) 3911da177e4SLinus Torvalds { 3921da177e4SLinus Torvalds int error; 3931da177e4SLinus Torvalds 3941da177e4SLinus Torvalds down_read(&uts_sem); 3951da177e4SLinus Torvalds error = -EFAULT; 396e9ff3990SSerge E. Hallyn if (copy_to_user(name + 0, utsname()->sysname, 32)) 3971da177e4SLinus Torvalds goto out; 398e9ff3990SSerge E. Hallyn if (copy_to_user(name + 32, utsname()->nodename, 32)) 3991da177e4SLinus Torvalds goto out; 400e9ff3990SSerge E. Hallyn if (copy_to_user(name + 64, utsname()->release, 32)) 4011da177e4SLinus Torvalds goto out; 402e9ff3990SSerge E. Hallyn if (copy_to_user(name + 96, utsname()->version, 32)) 4031da177e4SLinus Torvalds goto out; 404e9ff3990SSerge E. Hallyn if (copy_to_user(name + 128, utsname()->machine, 32)) 4051da177e4SLinus Torvalds goto out; 4061da177e4SLinus Torvalds 4071da177e4SLinus Torvalds error = 0; 4081da177e4SLinus Torvalds out: 4091da177e4SLinus Torvalds up_read(&uts_sem); 4101da177e4SLinus Torvalds return error; 4111da177e4SLinus Torvalds } 4121da177e4SLinus Torvalds 413e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE0(getpagesize) 4141da177e4SLinus Torvalds { 4151da177e4SLinus Torvalds return PAGE_SIZE; 4161da177e4SLinus Torvalds } 4171da177e4SLinus Torvalds 418e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE0(getdtablesize) 4191da177e4SLinus Torvalds { 4209cfe015aSEric Dumazet return sysctl_nr_open; 4211da177e4SLinus Torvalds } 4221da177e4SLinus Torvalds 4231da177e4SLinus Torvalds /* 4241da177e4SLinus Torvalds * For compatibility with OSF/1 only. Use utsname(2) instead. 4251da177e4SLinus Torvalds */ 426e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE2(osf_getdomainname, char __user *, name, int, namelen) 4271da177e4SLinus Torvalds { 4281da177e4SLinus Torvalds unsigned len; 4291da177e4SLinus Torvalds int i; 4301da177e4SLinus Torvalds 4311da177e4SLinus Torvalds if (!access_ok(VERIFY_WRITE, name, namelen)) 4321da177e4SLinus Torvalds return -EFAULT; 4331da177e4SLinus Torvalds 4341da177e4SLinus Torvalds len = namelen; 4351da177e4SLinus Torvalds if (namelen > 32) 4361da177e4SLinus Torvalds len = 32; 4371da177e4SLinus Torvalds 4381da177e4SLinus Torvalds down_read(&uts_sem); 4391da177e4SLinus Torvalds for (i = 0; i < len; ++i) { 440e9ff3990SSerge E. Hallyn __put_user(utsname()->domainname[i], name + i); 441e9ff3990SSerge E. Hallyn if (utsname()->domainname[i] == '\0') 4421da177e4SLinus Torvalds break; 4431da177e4SLinus Torvalds } 4441da177e4SLinus Torvalds up_read(&uts_sem); 4451da177e4SLinus Torvalds 4461da177e4SLinus Torvalds return 0; 4471da177e4SLinus Torvalds } 4481da177e4SLinus Torvalds 4491da177e4SLinus Torvalds /* 4501da177e4SLinus Torvalds * The following stuff should move into a header file should it ever 4511da177e4SLinus Torvalds * be labeled "officially supported." Right now, there is just enough 4521da177e4SLinus Torvalds * support to avoid applications (such as tar) printing error 4531da177e4SLinus Torvalds * messages. The attributes are not really implemented. 4541da177e4SLinus Torvalds */ 4551da177e4SLinus Torvalds 4561da177e4SLinus Torvalds /* 4571da177e4SLinus Torvalds * Values for Property list entry flag 4581da177e4SLinus Torvalds */ 4591da177e4SLinus Torvalds #define PLE_PROPAGATE_ON_COPY 0x1 /* cp(1) will copy entry 4601da177e4SLinus Torvalds by default */ 4611da177e4SLinus Torvalds #define PLE_FLAG_MASK 0x1 /* Valid flag values */ 4621da177e4SLinus Torvalds #define PLE_FLAG_ALL -1 /* All flag value */ 4631da177e4SLinus Torvalds 4641da177e4SLinus Torvalds struct proplistname_args { 4651da177e4SLinus Torvalds unsigned int pl_mask; 4661da177e4SLinus Torvalds unsigned int pl_numnames; 4671da177e4SLinus Torvalds char **pl_names; 4681da177e4SLinus Torvalds }; 4691da177e4SLinus Torvalds 4701da177e4SLinus Torvalds union pl_args { 4711da177e4SLinus Torvalds struct setargs { 4721da177e4SLinus Torvalds char __user *path; 4731da177e4SLinus Torvalds long follow; 4741da177e4SLinus Torvalds long nbytes; 4751da177e4SLinus Torvalds char __user *buf; 4761da177e4SLinus Torvalds } set; 4771da177e4SLinus Torvalds struct fsetargs { 4781da177e4SLinus Torvalds long fd; 4791da177e4SLinus Torvalds long nbytes; 4801da177e4SLinus Torvalds char __user *buf; 4811da177e4SLinus Torvalds } fset; 4821da177e4SLinus Torvalds struct getargs { 4831da177e4SLinus Torvalds char __user *path; 4841da177e4SLinus Torvalds long follow; 4851da177e4SLinus Torvalds struct proplistname_args __user *name_args; 4861da177e4SLinus Torvalds long nbytes; 4871da177e4SLinus Torvalds char __user *buf; 4881da177e4SLinus Torvalds int __user *min_buf_size; 4891da177e4SLinus Torvalds } get; 4901da177e4SLinus Torvalds struct fgetargs { 4911da177e4SLinus Torvalds long fd; 4921da177e4SLinus Torvalds struct proplistname_args __user *name_args; 4931da177e4SLinus Torvalds long nbytes; 4941da177e4SLinus Torvalds char __user *buf; 4951da177e4SLinus Torvalds int __user *min_buf_size; 4961da177e4SLinus Torvalds } fget; 4971da177e4SLinus Torvalds struct delargs { 4981da177e4SLinus Torvalds char __user *path; 4991da177e4SLinus Torvalds long follow; 5001da177e4SLinus Torvalds struct proplistname_args __user *name_args; 5011da177e4SLinus Torvalds } del; 5021da177e4SLinus Torvalds struct fdelargs { 5031da177e4SLinus Torvalds long fd; 5041da177e4SLinus Torvalds struct proplistname_args __user *name_args; 5051da177e4SLinus Torvalds } fdel; 5061da177e4SLinus Torvalds }; 5071da177e4SLinus Torvalds 5081da177e4SLinus Torvalds enum pl_code { 5091da177e4SLinus Torvalds PL_SET = 1, PL_FSET = 2, 5101da177e4SLinus Torvalds PL_GET = 3, PL_FGET = 4, 5111da177e4SLinus Torvalds PL_DEL = 5, PL_FDEL = 6 5121da177e4SLinus Torvalds }; 5131da177e4SLinus Torvalds 514e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code, 515e5d9a90cSIvan Kokshaysky union pl_args __user *, args) 5161da177e4SLinus Torvalds { 5171da177e4SLinus Torvalds long error; 5181da177e4SLinus Torvalds int __user *min_buf_size_ptr; 5191da177e4SLinus Torvalds 5201da177e4SLinus Torvalds lock_kernel(); 5211da177e4SLinus Torvalds switch (code) { 5221da177e4SLinus Torvalds case PL_SET: 5231da177e4SLinus Torvalds if (get_user(error, &args->set.nbytes)) 5241da177e4SLinus Torvalds error = -EFAULT; 5251da177e4SLinus Torvalds break; 5261da177e4SLinus Torvalds case PL_FSET: 5271da177e4SLinus Torvalds if (get_user(error, &args->fset.nbytes)) 5281da177e4SLinus Torvalds error = -EFAULT; 5291da177e4SLinus Torvalds break; 5301da177e4SLinus Torvalds case PL_GET: 5311da177e4SLinus Torvalds error = get_user(min_buf_size_ptr, &args->get.min_buf_size); 5321da177e4SLinus Torvalds if (error) 5331da177e4SLinus Torvalds break; 5341da177e4SLinus Torvalds error = put_user(0, min_buf_size_ptr); 5351da177e4SLinus Torvalds break; 5361da177e4SLinus Torvalds case PL_FGET: 5371da177e4SLinus Torvalds error = get_user(min_buf_size_ptr, &args->fget.min_buf_size); 5381da177e4SLinus Torvalds if (error) 5391da177e4SLinus Torvalds break; 5401da177e4SLinus Torvalds error = put_user(0, min_buf_size_ptr); 5411da177e4SLinus Torvalds break; 5421da177e4SLinus Torvalds case PL_DEL: 5431da177e4SLinus Torvalds case PL_FDEL: 5441da177e4SLinus Torvalds error = 0; 5451da177e4SLinus Torvalds break; 5461da177e4SLinus Torvalds default: 5471da177e4SLinus Torvalds error = -EOPNOTSUPP; 5481da177e4SLinus Torvalds break; 5491da177e4SLinus Torvalds }; 5501da177e4SLinus Torvalds unlock_kernel(); 5511da177e4SLinus Torvalds return error; 5521da177e4SLinus Torvalds } 5531da177e4SLinus Torvalds 554e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE2(osf_sigstack, struct sigstack __user *, uss, 555e5d9a90cSIvan Kokshaysky struct sigstack __user *, uoss) 5561da177e4SLinus Torvalds { 5571da177e4SLinus Torvalds unsigned long usp = rdusp(); 5581da177e4SLinus Torvalds unsigned long oss_sp = current->sas_ss_sp + current->sas_ss_size; 5591da177e4SLinus Torvalds unsigned long oss_os = on_sig_stack(usp); 5601da177e4SLinus Torvalds int error; 5611da177e4SLinus Torvalds 5621da177e4SLinus Torvalds if (uss) { 5631da177e4SLinus Torvalds void __user *ss_sp; 5641da177e4SLinus Torvalds 5651da177e4SLinus Torvalds error = -EFAULT; 5661da177e4SLinus Torvalds if (get_user(ss_sp, &uss->ss_sp)) 5671da177e4SLinus Torvalds goto out; 5681da177e4SLinus Torvalds 5691da177e4SLinus Torvalds /* If the current stack was set with sigaltstack, don't 5701da177e4SLinus Torvalds swap stacks while we are on it. */ 5711da177e4SLinus Torvalds error = -EPERM; 5721da177e4SLinus Torvalds if (current->sas_ss_sp && on_sig_stack(usp)) 5731da177e4SLinus Torvalds goto out; 5741da177e4SLinus Torvalds 5751da177e4SLinus Torvalds /* Since we don't know the extent of the stack, and we don't 5761da177e4SLinus Torvalds track onstack-ness, but rather calculate it, we must 5771da177e4SLinus Torvalds presume a size. Ho hum this interface is lossy. */ 5781da177e4SLinus Torvalds current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ; 5791da177e4SLinus Torvalds current->sas_ss_size = SIGSTKSZ; 5801da177e4SLinus Torvalds } 5811da177e4SLinus Torvalds 5821da177e4SLinus Torvalds if (uoss) { 5831da177e4SLinus Torvalds error = -EFAULT; 5841da177e4SLinus Torvalds if (! access_ok(VERIFY_WRITE, uoss, sizeof(*uoss)) 5851da177e4SLinus Torvalds || __put_user(oss_sp, &uoss->ss_sp) 5861da177e4SLinus Torvalds || __put_user(oss_os, &uoss->ss_onstack)) 5871da177e4SLinus Torvalds goto out; 5881da177e4SLinus Torvalds } 5891da177e4SLinus Torvalds 5901da177e4SLinus Torvalds error = 0; 5911da177e4SLinus Torvalds out: 5921da177e4SLinus Torvalds return error; 5931da177e4SLinus Torvalds } 5941da177e4SLinus Torvalds 595e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE3(osf_sysinfo, int, command, char __user *, buf, long, count) 5961da177e4SLinus Torvalds { 597e9ff3990SSerge E. Hallyn char *sysinfo_table[] = { 598e9ff3990SSerge E. Hallyn utsname()->sysname, 599e9ff3990SSerge E. Hallyn utsname()->nodename, 600e9ff3990SSerge E. Hallyn utsname()->release, 601e9ff3990SSerge E. Hallyn utsname()->version, 602e9ff3990SSerge E. Hallyn utsname()->machine, 6031da177e4SLinus Torvalds "alpha", /* instruction set architecture */ 6041da177e4SLinus Torvalds "dummy", /* hardware serial number */ 6051da177e4SLinus Torvalds "dummy", /* hardware manufacturer */ 6061da177e4SLinus Torvalds "dummy", /* secure RPC domain */ 6071da177e4SLinus Torvalds }; 6081da177e4SLinus Torvalds unsigned long offset; 6091da177e4SLinus Torvalds char *res; 6101da177e4SLinus Torvalds long len, err = -EINVAL; 6111da177e4SLinus Torvalds 6121da177e4SLinus Torvalds offset = command-1; 61325c8716cSTobias Klauser if (offset >= ARRAY_SIZE(sysinfo_table)) { 6141da177e4SLinus Torvalds /* Digital UNIX has a few unpublished interfaces here */ 6151da177e4SLinus Torvalds printk("sysinfo(%d)", command); 6161da177e4SLinus Torvalds goto out; 6171da177e4SLinus Torvalds } 6181da177e4SLinus Torvalds 6191da177e4SLinus Torvalds down_read(&uts_sem); 6201da177e4SLinus Torvalds res = sysinfo_table[offset]; 6211da177e4SLinus Torvalds len = strlen(res)+1; 6221da177e4SLinus Torvalds if (len > count) 6231da177e4SLinus Torvalds len = count; 6241da177e4SLinus Torvalds if (copy_to_user(buf, res, len)) 6251da177e4SLinus Torvalds err = -EFAULT; 6261da177e4SLinus Torvalds else 6271da177e4SLinus Torvalds err = 0; 6281da177e4SLinus Torvalds up_read(&uts_sem); 6291da177e4SLinus Torvalds out: 6301da177e4SLinus Torvalds return err; 6311da177e4SLinus Torvalds } 6321da177e4SLinus Torvalds 633e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer, 634e5d9a90cSIvan Kokshaysky unsigned long, nbytes, int __user *, start, void __user *, arg) 6351da177e4SLinus Torvalds { 6361da177e4SLinus Torvalds unsigned long w; 6371da177e4SLinus Torvalds struct percpu_struct *cpu; 6381da177e4SLinus Torvalds 6391da177e4SLinus Torvalds switch (op) { 6401da177e4SLinus Torvalds case GSI_IEEE_FP_CONTROL: 6411da177e4SLinus Torvalds /* Return current software fp control & status bits. */ 6421da177e4SLinus Torvalds /* Note that DU doesn't verify available space here. */ 6431da177e4SLinus Torvalds 6441da177e4SLinus Torvalds w = current_thread_info()->ieee_state & IEEE_SW_MASK; 6451da177e4SLinus Torvalds w = swcr_update_status(w, rdfpcr()); 6461da177e4SLinus Torvalds if (put_user(w, (unsigned long __user *) buffer)) 6471da177e4SLinus Torvalds return -EFAULT; 6481da177e4SLinus Torvalds return 0; 6491da177e4SLinus Torvalds 6501da177e4SLinus Torvalds case GSI_IEEE_STATE_AT_SIGNAL: 6511da177e4SLinus Torvalds /* 6521da177e4SLinus Torvalds * Not sure anybody will ever use this weird stuff. These 6531da177e4SLinus Torvalds * ops can be used (under OSF/1) to set the fpcr that should 6541da177e4SLinus Torvalds * be used when a signal handler starts executing. 6551da177e4SLinus Torvalds */ 6561da177e4SLinus Torvalds break; 6571da177e4SLinus Torvalds 6581da177e4SLinus Torvalds case GSI_UACPROC: 6591da177e4SLinus Torvalds if (nbytes < sizeof(unsigned int)) 6601da177e4SLinus Torvalds return -EINVAL; 6611da177e4SLinus Torvalds w = (current_thread_info()->flags >> UAC_SHIFT) & UAC_BITMASK; 6621da177e4SLinus Torvalds if (put_user(w, (unsigned int __user *)buffer)) 6631da177e4SLinus Torvalds return -EFAULT; 6641da177e4SLinus Torvalds return 1; 6651da177e4SLinus Torvalds 6661da177e4SLinus Torvalds case GSI_PROC_TYPE: 6671da177e4SLinus Torvalds if (nbytes < sizeof(unsigned long)) 6681da177e4SLinus Torvalds return -EINVAL; 6691da177e4SLinus Torvalds cpu = (struct percpu_struct*) 6701da177e4SLinus Torvalds ((char*)hwrpb + hwrpb->processor_offset); 6711da177e4SLinus Torvalds w = cpu->type; 6721da177e4SLinus Torvalds if (put_user(w, (unsigned long __user*)buffer)) 6731da177e4SLinus Torvalds return -EFAULT; 6741da177e4SLinus Torvalds return 1; 6751da177e4SLinus Torvalds 6761da177e4SLinus Torvalds case GSI_GET_HWRPB: 6771da177e4SLinus Torvalds if (nbytes < sizeof(*hwrpb)) 6781da177e4SLinus Torvalds return -EINVAL; 6791da177e4SLinus Torvalds if (copy_to_user(buffer, hwrpb, nbytes) != 0) 6801da177e4SLinus Torvalds return -EFAULT; 6811da177e4SLinus Torvalds return 1; 6821da177e4SLinus Torvalds 6831da177e4SLinus Torvalds default: 6841da177e4SLinus Torvalds break; 6851da177e4SLinus Torvalds } 6861da177e4SLinus Torvalds 6871da177e4SLinus Torvalds return -EOPNOTSUPP; 6881da177e4SLinus Torvalds } 6891da177e4SLinus Torvalds 690e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer, 691e5d9a90cSIvan Kokshaysky unsigned long, nbytes, int __user *, start, void __user *, arg) 6921da177e4SLinus Torvalds { 6931da177e4SLinus Torvalds switch (op) { 6941da177e4SLinus Torvalds case SSI_IEEE_FP_CONTROL: { 6951da177e4SLinus Torvalds unsigned long swcr, fpcr; 6961da177e4SLinus Torvalds unsigned int *state; 6971da177e4SLinus Torvalds 6981da177e4SLinus Torvalds /* 6991da177e4SLinus Torvalds * Alpha Architecture Handbook 4.7.7.3: 7001da177e4SLinus Torvalds * To be fully IEEE compiant, we must track the current IEEE 701c3a2ddeeSSimon Arlott * exception state in software, because spurious bits can be 7021da177e4SLinus Torvalds * set in the trap shadow of a software-complete insn. 7031da177e4SLinus Torvalds */ 7041da177e4SLinus Torvalds 7051da177e4SLinus Torvalds if (get_user(swcr, (unsigned long __user *)buffer)) 7061da177e4SLinus Torvalds return -EFAULT; 7071da177e4SLinus Torvalds state = ¤t_thread_info()->ieee_state; 7081da177e4SLinus Torvalds 7091da177e4SLinus Torvalds /* Update softare trap enable bits. */ 7101da177e4SLinus Torvalds *state = (*state & ~IEEE_SW_MASK) | (swcr & IEEE_SW_MASK); 7111da177e4SLinus Torvalds 7121da177e4SLinus Torvalds /* Update the real fpcr. */ 7131da177e4SLinus Torvalds fpcr = rdfpcr() & FPCR_DYN_MASK; 7141da177e4SLinus Torvalds fpcr |= ieee_swcr_to_fpcr(swcr); 7151da177e4SLinus Torvalds wrfpcr(fpcr); 7161da177e4SLinus Torvalds 7171da177e4SLinus Torvalds return 0; 7181da177e4SLinus Torvalds } 7191da177e4SLinus Torvalds 7201da177e4SLinus Torvalds case SSI_IEEE_RAISE_EXCEPTION: { 7211da177e4SLinus Torvalds unsigned long exc, swcr, fpcr, fex; 7221da177e4SLinus Torvalds unsigned int *state; 7231da177e4SLinus Torvalds 7241da177e4SLinus Torvalds if (get_user(exc, (unsigned long __user *)buffer)) 7251da177e4SLinus Torvalds return -EFAULT; 7261da177e4SLinus Torvalds state = ¤t_thread_info()->ieee_state; 7271da177e4SLinus Torvalds exc &= IEEE_STATUS_MASK; 7281da177e4SLinus Torvalds 7291da177e4SLinus Torvalds /* Update softare trap enable bits. */ 7301da177e4SLinus Torvalds swcr = (*state & IEEE_SW_MASK) | exc; 7311da177e4SLinus Torvalds *state |= exc; 7321da177e4SLinus Torvalds 7331da177e4SLinus Torvalds /* Update the real fpcr. */ 7341da177e4SLinus Torvalds fpcr = rdfpcr(); 7351da177e4SLinus Torvalds fpcr |= ieee_swcr_to_fpcr(swcr); 7361da177e4SLinus Torvalds wrfpcr(fpcr); 7371da177e4SLinus Torvalds 7381da177e4SLinus Torvalds /* If any exceptions set by this call, and are unmasked, 7391da177e4SLinus Torvalds send a signal. Old exceptions are not signaled. */ 7401da177e4SLinus Torvalds fex = (exc >> IEEE_STATUS_TO_EXCSUM_SHIFT) & swcr; 7411da177e4SLinus Torvalds if (fex) { 7421da177e4SLinus Torvalds siginfo_t info; 7431da177e4SLinus Torvalds int si_code = 0; 7441da177e4SLinus Torvalds 7451da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_DNO) si_code = FPE_FLTUND; 7461da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_INE) si_code = FPE_FLTRES; 7471da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_UNF) si_code = FPE_FLTUND; 7481da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_OVF) si_code = FPE_FLTOVF; 7491da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_DZE) si_code = FPE_FLTDIV; 7501da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_INV) si_code = FPE_FLTINV; 7511da177e4SLinus Torvalds 7521da177e4SLinus Torvalds info.si_signo = SIGFPE; 7531da177e4SLinus Torvalds info.si_errno = 0; 7541da177e4SLinus Torvalds info.si_code = si_code; 7551da177e4SLinus Torvalds info.si_addr = NULL; /* FIXME */ 7561da177e4SLinus Torvalds send_sig_info(SIGFPE, &info, current); 7571da177e4SLinus Torvalds } 7581da177e4SLinus Torvalds return 0; 7591da177e4SLinus Torvalds } 7601da177e4SLinus Torvalds 7611da177e4SLinus Torvalds case SSI_IEEE_STATE_AT_SIGNAL: 7621da177e4SLinus Torvalds case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: 7631da177e4SLinus Torvalds /* 7641da177e4SLinus Torvalds * Not sure anybody will ever use this weird stuff. These 7651da177e4SLinus Torvalds * ops can be used (under OSF/1) to set the fpcr that should 7661da177e4SLinus Torvalds * be used when a signal handler starts executing. 7671da177e4SLinus Torvalds */ 7681da177e4SLinus Torvalds break; 7691da177e4SLinus Torvalds 7701da177e4SLinus Torvalds case SSI_NVPAIRS: { 7711da177e4SLinus Torvalds unsigned long v, w, i; 7721da177e4SLinus Torvalds unsigned int old, new; 7731da177e4SLinus Torvalds 7741da177e4SLinus Torvalds for (i = 0; i < nbytes; ++i) { 7751da177e4SLinus Torvalds 7761da177e4SLinus Torvalds if (get_user(v, 2*i + (unsigned int __user *)buffer)) 7771da177e4SLinus Torvalds return -EFAULT; 7781da177e4SLinus Torvalds if (get_user(w, 2*i + 1 + (unsigned int __user *)buffer)) 7791da177e4SLinus Torvalds return -EFAULT; 7801da177e4SLinus Torvalds switch (v) { 7811da177e4SLinus Torvalds case SSIN_UACPROC: 7821da177e4SLinus Torvalds again: 7831da177e4SLinus Torvalds old = current_thread_info()->flags; 7841da177e4SLinus Torvalds new = old & ~(UAC_BITMASK << UAC_SHIFT); 7851da177e4SLinus Torvalds new = new | (w & UAC_BITMASK) << UAC_SHIFT; 7861da177e4SLinus Torvalds if (cmpxchg(¤t_thread_info()->flags, 7871da177e4SLinus Torvalds old, new) != old) 7881da177e4SLinus Torvalds goto again; 7891da177e4SLinus Torvalds break; 7901da177e4SLinus Torvalds 7911da177e4SLinus Torvalds default: 7921da177e4SLinus Torvalds return -EOPNOTSUPP; 7931da177e4SLinus Torvalds } 7941da177e4SLinus Torvalds } 7951da177e4SLinus Torvalds return 0; 7961da177e4SLinus Torvalds } 7971da177e4SLinus Torvalds 7981da177e4SLinus Torvalds default: 7991da177e4SLinus Torvalds break; 8001da177e4SLinus Torvalds } 8011da177e4SLinus Torvalds 8021da177e4SLinus Torvalds return -EOPNOTSUPP; 8031da177e4SLinus Torvalds } 8041da177e4SLinus Torvalds 8051da177e4SLinus Torvalds /* Translations due to the fact that OSF's time_t is an int. Which 8061da177e4SLinus Torvalds affects all sorts of things, like timeval and itimerval. */ 8071da177e4SLinus Torvalds 8081da177e4SLinus Torvalds extern struct timezone sys_tz; 8091da177e4SLinus Torvalds 8101da177e4SLinus Torvalds struct timeval32 8111da177e4SLinus Torvalds { 8121da177e4SLinus Torvalds int tv_sec, tv_usec; 8131da177e4SLinus Torvalds }; 8141da177e4SLinus Torvalds 8151da177e4SLinus Torvalds struct itimerval32 8161da177e4SLinus Torvalds { 8171da177e4SLinus Torvalds struct timeval32 it_interval; 8181da177e4SLinus Torvalds struct timeval32 it_value; 8191da177e4SLinus Torvalds }; 8201da177e4SLinus Torvalds 8211da177e4SLinus Torvalds static inline long 8221da177e4SLinus Torvalds get_tv32(struct timeval *o, struct timeval32 __user *i) 8231da177e4SLinus Torvalds { 8241da177e4SLinus Torvalds return (!access_ok(VERIFY_READ, i, sizeof(*i)) || 8251da177e4SLinus Torvalds (__get_user(o->tv_sec, &i->tv_sec) | 8261da177e4SLinus Torvalds __get_user(o->tv_usec, &i->tv_usec))); 8271da177e4SLinus Torvalds } 8281da177e4SLinus Torvalds 8291da177e4SLinus Torvalds static inline long 8301da177e4SLinus Torvalds put_tv32(struct timeval32 __user *o, struct timeval *i) 8311da177e4SLinus Torvalds { 8321da177e4SLinus Torvalds return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || 8331da177e4SLinus Torvalds (__put_user(i->tv_sec, &o->tv_sec) | 8341da177e4SLinus Torvalds __put_user(i->tv_usec, &o->tv_usec))); 8351da177e4SLinus Torvalds } 8361da177e4SLinus Torvalds 8371da177e4SLinus Torvalds static inline long 8381da177e4SLinus Torvalds get_it32(struct itimerval *o, struct itimerval32 __user *i) 8391da177e4SLinus Torvalds { 8401da177e4SLinus Torvalds return (!access_ok(VERIFY_READ, i, sizeof(*i)) || 8411da177e4SLinus Torvalds (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) | 8421da177e4SLinus Torvalds __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) | 8431da177e4SLinus Torvalds __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) | 8441da177e4SLinus Torvalds __get_user(o->it_value.tv_usec, &i->it_value.tv_usec))); 8451da177e4SLinus Torvalds } 8461da177e4SLinus Torvalds 8471da177e4SLinus Torvalds static inline long 8481da177e4SLinus Torvalds put_it32(struct itimerval32 __user *o, struct itimerval *i) 8491da177e4SLinus Torvalds { 8501da177e4SLinus Torvalds return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || 8511da177e4SLinus Torvalds (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) | 8521da177e4SLinus Torvalds __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) | 8531da177e4SLinus Torvalds __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) | 8541da177e4SLinus Torvalds __put_user(i->it_value.tv_usec, &o->it_value.tv_usec))); 8551da177e4SLinus Torvalds } 8561da177e4SLinus Torvalds 8571da177e4SLinus Torvalds static inline void 8581da177e4SLinus Torvalds jiffies_to_timeval32(unsigned long jiffies, struct timeval32 *value) 8591da177e4SLinus Torvalds { 8601da177e4SLinus Torvalds value->tv_usec = (jiffies % HZ) * (1000000L / HZ); 8611da177e4SLinus Torvalds value->tv_sec = jiffies / HZ; 8621da177e4SLinus Torvalds } 8631da177e4SLinus Torvalds 864e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE2(osf_gettimeofday, struct timeval32 __user *, tv, 865e5d9a90cSIvan Kokshaysky struct timezone __user *, tz) 8661da177e4SLinus Torvalds { 8671da177e4SLinus Torvalds if (tv) { 8681da177e4SLinus Torvalds struct timeval ktv; 8691da177e4SLinus Torvalds do_gettimeofday(&ktv); 8701da177e4SLinus Torvalds if (put_tv32(tv, &ktv)) 8711da177e4SLinus Torvalds return -EFAULT; 8721da177e4SLinus Torvalds } 8731da177e4SLinus Torvalds if (tz) { 8741da177e4SLinus Torvalds if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) 8751da177e4SLinus Torvalds return -EFAULT; 8761da177e4SLinus Torvalds } 8771da177e4SLinus Torvalds return 0; 8781da177e4SLinus Torvalds } 8791da177e4SLinus Torvalds 880e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv, 881e5d9a90cSIvan Kokshaysky struct timezone __user *, tz) 8821da177e4SLinus Torvalds { 8831da177e4SLinus Torvalds struct timespec kts; 8841da177e4SLinus Torvalds struct timezone ktz; 8851da177e4SLinus Torvalds 8861da177e4SLinus Torvalds if (tv) { 8871da177e4SLinus Torvalds if (get_tv32((struct timeval *)&kts, tv)) 8881da177e4SLinus Torvalds return -EFAULT; 8891da177e4SLinus Torvalds } 8901da177e4SLinus Torvalds if (tz) { 8911da177e4SLinus Torvalds if (copy_from_user(&ktz, tz, sizeof(*tz))) 8921da177e4SLinus Torvalds return -EFAULT; 8931da177e4SLinus Torvalds } 8941da177e4SLinus Torvalds 8951da177e4SLinus Torvalds kts.tv_nsec *= 1000; 8961da177e4SLinus Torvalds 8971da177e4SLinus Torvalds return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); 8981da177e4SLinus Torvalds } 8991da177e4SLinus Torvalds 900e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE2(osf_getitimer, int, which, struct itimerval32 __user *, it) 9011da177e4SLinus Torvalds { 9021da177e4SLinus Torvalds struct itimerval kit; 9031da177e4SLinus Torvalds int error; 9041da177e4SLinus Torvalds 9051da177e4SLinus Torvalds error = do_getitimer(which, &kit); 9061da177e4SLinus Torvalds if (!error && put_it32(it, &kit)) 9071da177e4SLinus Torvalds error = -EFAULT; 9081da177e4SLinus Torvalds 9091da177e4SLinus Torvalds return error; 9101da177e4SLinus Torvalds } 9111da177e4SLinus Torvalds 912e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE3(osf_setitimer, int, which, struct itimerval32 __user *, in, 913e5d9a90cSIvan Kokshaysky struct itimerval32 __user *, out) 9141da177e4SLinus Torvalds { 9151da177e4SLinus Torvalds struct itimerval kin, kout; 9161da177e4SLinus Torvalds int error; 9171da177e4SLinus Torvalds 9181da177e4SLinus Torvalds if (in) { 9191da177e4SLinus Torvalds if (get_it32(&kin, in)) 9201da177e4SLinus Torvalds return -EFAULT; 9211da177e4SLinus Torvalds } else 9221da177e4SLinus Torvalds memset(&kin, 0, sizeof(kin)); 9231da177e4SLinus Torvalds 9241da177e4SLinus Torvalds error = do_setitimer(which, &kin, out ? &kout : NULL); 9251da177e4SLinus Torvalds if (error || !out) 9261da177e4SLinus Torvalds return error; 9271da177e4SLinus Torvalds 9281da177e4SLinus Torvalds if (put_it32(out, &kout)) 9291da177e4SLinus Torvalds return -EFAULT; 9301da177e4SLinus Torvalds 9311da177e4SLinus Torvalds return 0; 9321da177e4SLinus Torvalds 9331da177e4SLinus Torvalds } 9341da177e4SLinus Torvalds 935e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE2(osf_utimes, char __user *, filename, 936e5d9a90cSIvan Kokshaysky struct timeval32 __user *, tvs) 9371da177e4SLinus Torvalds { 9381c710c89SUlrich Drepper struct timespec tv[2]; 9391da177e4SLinus Torvalds 9401da177e4SLinus Torvalds if (tvs) { 9411c710c89SUlrich Drepper struct timeval ktvs[2]; 9421da177e4SLinus Torvalds if (get_tv32(&ktvs[0], &tvs[0]) || 9431da177e4SLinus Torvalds get_tv32(&ktvs[1], &tvs[1])) 9441da177e4SLinus Torvalds return -EFAULT; 9451c710c89SUlrich Drepper 9461c710c89SUlrich Drepper if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 || 9471c710c89SUlrich Drepper ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000) 9481c710c89SUlrich Drepper return -EINVAL; 9491c710c89SUlrich Drepper 9501c710c89SUlrich Drepper tv[0].tv_sec = ktvs[0].tv_sec; 9511c710c89SUlrich Drepper tv[0].tv_nsec = 1000 * ktvs[0].tv_usec; 9521c710c89SUlrich Drepper tv[1].tv_sec = ktvs[1].tv_sec; 9531c710c89SUlrich Drepper tv[1].tv_nsec = 1000 * ktvs[1].tv_usec; 9541da177e4SLinus Torvalds } 9551da177e4SLinus Torvalds 9561c710c89SUlrich Drepper return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0); 9571da177e4SLinus Torvalds } 9581da177e4SLinus Torvalds 9591da177e4SLinus Torvalds #define MAX_SELECT_SECONDS \ 9601da177e4SLinus Torvalds ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1) 9611da177e4SLinus Torvalds 962e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE5(osf_select, int, n, fd_set __user *, inp, fd_set __user *, outp, 963e5d9a90cSIvan Kokshaysky fd_set __user *, exp, struct timeval32 __user *, tvp) 9641da177e4SLinus Torvalds { 96514e2acd8SArjan van de Ven struct timespec end_time, *to = NULL; 9661da177e4SLinus Torvalds if (tvp) { 9671da177e4SLinus Torvalds time_t sec, usec; 9681da177e4SLinus Torvalds 96914e2acd8SArjan van de Ven to = &end_time; 97014e2acd8SArjan van de Ven 9711da177e4SLinus Torvalds if (!access_ok(VERIFY_READ, tvp, sizeof(*tvp)) 9721da177e4SLinus Torvalds || __get_user(sec, &tvp->tv_sec) 9731da177e4SLinus Torvalds || __get_user(usec, &tvp->tv_usec)) { 974a2dcb44cSAl Viro return -EFAULT; 9751da177e4SLinus Torvalds } 9761da177e4SLinus Torvalds 9771da177e4SLinus Torvalds if (sec < 0 || usec < 0) 978a2dcb44cSAl Viro return -EINVAL; 9791da177e4SLinus Torvalds 98014e2acd8SArjan van de Ven if (poll_select_set_timeout(to, sec, usec * NSEC_PER_USEC)) 98114e2acd8SArjan van de Ven return -EINVAL; 98214e2acd8SArjan van de Ven 9831da177e4SLinus Torvalds } 9841da177e4SLinus Torvalds 9851da177e4SLinus Torvalds /* OSF does not copy back the remaining time. */ 98614e2acd8SArjan van de Ven return core_sys_select(n, inp, outp, exp, to); 9871da177e4SLinus Torvalds } 9881da177e4SLinus Torvalds 9891da177e4SLinus Torvalds struct rusage32 { 9901da177e4SLinus Torvalds struct timeval32 ru_utime; /* user time used */ 9911da177e4SLinus Torvalds struct timeval32 ru_stime; /* system time used */ 9921da177e4SLinus Torvalds long ru_maxrss; /* maximum resident set size */ 9931da177e4SLinus Torvalds long ru_ixrss; /* integral shared memory size */ 9941da177e4SLinus Torvalds long ru_idrss; /* integral unshared data size */ 9951da177e4SLinus Torvalds long ru_isrss; /* integral unshared stack size */ 9961da177e4SLinus Torvalds long ru_minflt; /* page reclaims */ 9971da177e4SLinus Torvalds long ru_majflt; /* page faults */ 9981da177e4SLinus Torvalds long ru_nswap; /* swaps */ 9991da177e4SLinus Torvalds long ru_inblock; /* block input operations */ 10001da177e4SLinus Torvalds long ru_oublock; /* block output operations */ 10011da177e4SLinus Torvalds long ru_msgsnd; /* messages sent */ 10021da177e4SLinus Torvalds long ru_msgrcv; /* messages received */ 10031da177e4SLinus Torvalds long ru_nsignals; /* signals received */ 10041da177e4SLinus Torvalds long ru_nvcsw; /* voluntary context switches */ 10051da177e4SLinus Torvalds long ru_nivcsw; /* involuntary " */ 10061da177e4SLinus Torvalds }; 10071da177e4SLinus Torvalds 1008e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru) 10091da177e4SLinus Torvalds { 10101da177e4SLinus Torvalds struct rusage32 r; 10111da177e4SLinus Torvalds 10121da177e4SLinus Torvalds if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN) 10131da177e4SLinus Torvalds return -EINVAL; 10141da177e4SLinus Torvalds 10151da177e4SLinus Torvalds memset(&r, 0, sizeof(r)); 10161da177e4SLinus Torvalds switch (who) { 10171da177e4SLinus Torvalds case RUSAGE_SELF: 10181da177e4SLinus Torvalds jiffies_to_timeval32(current->utime, &r.ru_utime); 10191da177e4SLinus Torvalds jiffies_to_timeval32(current->stime, &r.ru_stime); 10201da177e4SLinus Torvalds r.ru_minflt = current->min_flt; 10211da177e4SLinus Torvalds r.ru_majflt = current->maj_flt; 10221da177e4SLinus Torvalds break; 10231da177e4SLinus Torvalds case RUSAGE_CHILDREN: 10241da177e4SLinus Torvalds jiffies_to_timeval32(current->signal->cutime, &r.ru_utime); 10251da177e4SLinus Torvalds jiffies_to_timeval32(current->signal->cstime, &r.ru_stime); 10261da177e4SLinus Torvalds r.ru_minflt = current->signal->cmin_flt; 10271da177e4SLinus Torvalds r.ru_majflt = current->signal->cmaj_flt; 10281da177e4SLinus Torvalds break; 10291da177e4SLinus Torvalds } 10301da177e4SLinus Torvalds 10311da177e4SLinus Torvalds return copy_to_user(ru, &r, sizeof(r)) ? -EFAULT : 0; 10321da177e4SLinus Torvalds } 10331da177e4SLinus Torvalds 1034e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE4(osf_wait4, pid_t, pid, int __user *, ustatus, int, options, 1035e5d9a90cSIvan Kokshaysky struct rusage32 __user *, ur) 10361da177e4SLinus Torvalds { 10371da177e4SLinus Torvalds struct rusage r; 10381da177e4SLinus Torvalds long ret, err; 10391da177e4SLinus Torvalds mm_segment_t old_fs; 10401da177e4SLinus Torvalds 10411da177e4SLinus Torvalds if (!ur) 10421da177e4SLinus Torvalds return sys_wait4(pid, ustatus, options, NULL); 10431da177e4SLinus Torvalds 10441da177e4SLinus Torvalds old_fs = get_fs(); 10451da177e4SLinus Torvalds 10461da177e4SLinus Torvalds set_fs (KERNEL_DS); 10471da177e4SLinus Torvalds ret = sys_wait4(pid, ustatus, options, (struct rusage __user *) &r); 10481da177e4SLinus Torvalds set_fs (old_fs); 10491da177e4SLinus Torvalds 10501da177e4SLinus Torvalds if (!access_ok(VERIFY_WRITE, ur, sizeof(*ur))) 10511da177e4SLinus Torvalds return -EFAULT; 10521da177e4SLinus Torvalds 10531da177e4SLinus Torvalds err = 0; 10541da177e4SLinus Torvalds err |= __put_user(r.ru_utime.tv_sec, &ur->ru_utime.tv_sec); 10551da177e4SLinus Torvalds err |= __put_user(r.ru_utime.tv_usec, &ur->ru_utime.tv_usec); 10561da177e4SLinus Torvalds err |= __put_user(r.ru_stime.tv_sec, &ur->ru_stime.tv_sec); 10571da177e4SLinus Torvalds err |= __put_user(r.ru_stime.tv_usec, &ur->ru_stime.tv_usec); 10581da177e4SLinus Torvalds err |= __put_user(r.ru_maxrss, &ur->ru_maxrss); 10591da177e4SLinus Torvalds err |= __put_user(r.ru_ixrss, &ur->ru_ixrss); 10601da177e4SLinus Torvalds err |= __put_user(r.ru_idrss, &ur->ru_idrss); 10611da177e4SLinus Torvalds err |= __put_user(r.ru_isrss, &ur->ru_isrss); 10621da177e4SLinus Torvalds err |= __put_user(r.ru_minflt, &ur->ru_minflt); 10631da177e4SLinus Torvalds err |= __put_user(r.ru_majflt, &ur->ru_majflt); 10641da177e4SLinus Torvalds err |= __put_user(r.ru_nswap, &ur->ru_nswap); 10651da177e4SLinus Torvalds err |= __put_user(r.ru_inblock, &ur->ru_inblock); 10661da177e4SLinus Torvalds err |= __put_user(r.ru_oublock, &ur->ru_oublock); 10671da177e4SLinus Torvalds err |= __put_user(r.ru_msgsnd, &ur->ru_msgsnd); 10681da177e4SLinus Torvalds err |= __put_user(r.ru_msgrcv, &ur->ru_msgrcv); 10691da177e4SLinus Torvalds err |= __put_user(r.ru_nsignals, &ur->ru_nsignals); 10701da177e4SLinus Torvalds err |= __put_user(r.ru_nvcsw, &ur->ru_nvcsw); 10711da177e4SLinus Torvalds err |= __put_user(r.ru_nivcsw, &ur->ru_nivcsw); 10721da177e4SLinus Torvalds 10731da177e4SLinus Torvalds return err ? err : ret; 10741da177e4SLinus Torvalds } 10751da177e4SLinus Torvalds 10761da177e4SLinus Torvalds /* 10771da177e4SLinus Torvalds * I don't know what the parameters are: the first one 10781da177e4SLinus Torvalds * seems to be a timeval pointer, and I suspect the second 10791da177e4SLinus Torvalds * one is the time remaining.. Ho humm.. No documentation. 10801da177e4SLinus Torvalds */ 1081e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE2(osf_usleep_thread, struct timeval32 __user *, sleep, 1082e5d9a90cSIvan Kokshaysky struct timeval32 __user *, remain) 10831da177e4SLinus Torvalds { 10841da177e4SLinus Torvalds struct timeval tmp; 10851da177e4SLinus Torvalds unsigned long ticks; 10861da177e4SLinus Torvalds 10871da177e4SLinus Torvalds if (get_tv32(&tmp, sleep)) 10881da177e4SLinus Torvalds goto fault; 10891da177e4SLinus Torvalds 109024d568edSNishanth Aravamudan ticks = timeval_to_jiffies(&tmp); 10911da177e4SLinus Torvalds 109220c6abd1SNishanth Aravamudan ticks = schedule_timeout_interruptible(ticks); 10931da177e4SLinus Torvalds 10941da177e4SLinus Torvalds if (remain) { 109524d568edSNishanth Aravamudan jiffies_to_timeval(ticks, &tmp); 10961da177e4SLinus Torvalds if (put_tv32(remain, &tmp)) 10971da177e4SLinus Torvalds goto fault; 10981da177e4SLinus Torvalds } 10991da177e4SLinus Torvalds 11001da177e4SLinus Torvalds return 0; 11011da177e4SLinus Torvalds fault: 11021da177e4SLinus Torvalds return -EFAULT; 11031da177e4SLinus Torvalds } 11041da177e4SLinus Torvalds 11051da177e4SLinus Torvalds 11061da177e4SLinus Torvalds struct timex32 { 11071da177e4SLinus Torvalds unsigned int modes; /* mode selector */ 11081da177e4SLinus Torvalds long offset; /* time offset (usec) */ 11091da177e4SLinus Torvalds long freq; /* frequency offset (scaled ppm) */ 11101da177e4SLinus Torvalds long maxerror; /* maximum error (usec) */ 11111da177e4SLinus Torvalds long esterror; /* estimated error (usec) */ 11121da177e4SLinus Torvalds int status; /* clock command/status */ 11131da177e4SLinus Torvalds long constant; /* pll time constant */ 11141da177e4SLinus Torvalds long precision; /* clock precision (usec) (read only) */ 11151da177e4SLinus Torvalds long tolerance; /* clock frequency tolerance (ppm) 11161da177e4SLinus Torvalds * (read only) 11171da177e4SLinus Torvalds */ 11181da177e4SLinus Torvalds struct timeval32 time; /* (read only) */ 11191da177e4SLinus Torvalds long tick; /* (modified) usecs between clock ticks */ 11201da177e4SLinus Torvalds 11211da177e4SLinus Torvalds long ppsfreq; /* pps frequency (scaled ppm) (ro) */ 11221da177e4SLinus Torvalds long jitter; /* pps jitter (us) (ro) */ 11231da177e4SLinus Torvalds int shift; /* interval duration (s) (shift) (ro) */ 11241da177e4SLinus Torvalds long stabil; /* pps stability (scaled ppm) (ro) */ 11251da177e4SLinus Torvalds long jitcnt; /* jitter limit exceeded (ro) */ 11261da177e4SLinus Torvalds long calcnt; /* calibration intervals (ro) */ 11271da177e4SLinus Torvalds long errcnt; /* calibration errors (ro) */ 11281da177e4SLinus Torvalds long stbcnt; /* stability limit exceeded (ro) */ 11291da177e4SLinus Torvalds 11301da177e4SLinus Torvalds int :32; int :32; int :32; int :32; 11311da177e4SLinus Torvalds int :32; int :32; int :32; int :32; 11321da177e4SLinus Torvalds int :32; int :32; int :32; int :32; 11331da177e4SLinus Torvalds }; 11341da177e4SLinus Torvalds 1135e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE1(old_adjtimex, struct timex32 __user *, txc_p) 11361da177e4SLinus Torvalds { 11371da177e4SLinus Torvalds struct timex txc; 11381da177e4SLinus Torvalds int ret; 11391da177e4SLinus Torvalds 11401da177e4SLinus Torvalds /* copy relevant bits of struct timex. */ 11411da177e4SLinus Torvalds if (copy_from_user(&txc, txc_p, offsetof(struct timex32, time)) || 11421da177e4SLinus Torvalds copy_from_user(&txc.tick, &txc_p->tick, sizeof(struct timex32) - 11431da177e4SLinus Torvalds offsetof(struct timex32, time))) 11441da177e4SLinus Torvalds return -EFAULT; 11451da177e4SLinus Torvalds 11461da177e4SLinus Torvalds ret = do_adjtimex(&txc); 11471da177e4SLinus Torvalds if (ret < 0) 11481da177e4SLinus Torvalds return ret; 11491da177e4SLinus Torvalds 11501da177e4SLinus Torvalds /* copy back to timex32 */ 11511da177e4SLinus Torvalds if (copy_to_user(txc_p, &txc, offsetof(struct timex32, time)) || 11521da177e4SLinus Torvalds (copy_to_user(&txc_p->tick, &txc.tick, sizeof(struct timex32) - 11531da177e4SLinus Torvalds offsetof(struct timex32, tick))) || 11541da177e4SLinus Torvalds (put_tv32(&txc_p->time, &txc.time))) 11551da177e4SLinus Torvalds return -EFAULT; 11561da177e4SLinus Torvalds 11571da177e4SLinus Torvalds return ret; 11581da177e4SLinus Torvalds } 11591da177e4SLinus Torvalds 11601da177e4SLinus Torvalds /* Get an address range which is currently unmapped. Similar to the 11611da177e4SLinus Torvalds generic version except that we know how to honor ADDR_LIMIT_32BIT. */ 11621da177e4SLinus Torvalds 11631da177e4SLinus Torvalds static unsigned long 11641da177e4SLinus Torvalds arch_get_unmapped_area_1(unsigned long addr, unsigned long len, 11651da177e4SLinus Torvalds unsigned long limit) 11661da177e4SLinus Torvalds { 11671da177e4SLinus Torvalds struct vm_area_struct *vma = find_vma(current->mm, addr); 11681da177e4SLinus Torvalds 11691da177e4SLinus Torvalds while (1) { 11701da177e4SLinus Torvalds /* At this point: (!vma || addr < vma->vm_end). */ 11711da177e4SLinus Torvalds if (limit - len < addr) 11721da177e4SLinus Torvalds return -ENOMEM; 11731da177e4SLinus Torvalds if (!vma || addr + len <= vma->vm_start) 11741da177e4SLinus Torvalds return addr; 11751da177e4SLinus Torvalds addr = vma->vm_end; 11761da177e4SLinus Torvalds vma = vma->vm_next; 11771da177e4SLinus Torvalds } 11781da177e4SLinus Torvalds } 11791da177e4SLinus Torvalds 11801da177e4SLinus Torvalds unsigned long 11811da177e4SLinus Torvalds arch_get_unmapped_area(struct file *filp, unsigned long addr, 11821da177e4SLinus Torvalds unsigned long len, unsigned long pgoff, 11831da177e4SLinus Torvalds unsigned long flags) 11841da177e4SLinus Torvalds { 11851da177e4SLinus Torvalds unsigned long limit; 11861da177e4SLinus Torvalds 11871da177e4SLinus Torvalds /* "32 bit" actually means 31 bit, since pointers sign extend. */ 11881da177e4SLinus Torvalds if (current->personality & ADDR_LIMIT_32BIT) 11891da177e4SLinus Torvalds limit = 0x80000000; 11901da177e4SLinus Torvalds else 11911da177e4SLinus Torvalds limit = TASK_SIZE; 11921da177e4SLinus Torvalds 11931da177e4SLinus Torvalds if (len > limit) 11941da177e4SLinus Torvalds return -ENOMEM; 11951da177e4SLinus Torvalds 11964b87b3b2SBenjamin Herrenschmidt if (flags & MAP_FIXED) 11974b87b3b2SBenjamin Herrenschmidt return addr; 11984b87b3b2SBenjamin Herrenschmidt 11991da177e4SLinus Torvalds /* First, see if the given suggestion fits. 12001da177e4SLinus Torvalds 12011da177e4SLinus Torvalds The OSF/1 loader (/sbin/loader) relies on us returning an 12021da177e4SLinus Torvalds address larger than the requested if one exists, which is 12031da177e4SLinus Torvalds a terribly broken way to program. 12041da177e4SLinus Torvalds 12051da177e4SLinus Torvalds That said, I can see the use in being able to suggest not 12061da177e4SLinus Torvalds merely specific addresses, but regions of memory -- perhaps 12071da177e4SLinus Torvalds this feature should be incorporated into all ports? */ 12081da177e4SLinus Torvalds 12091da177e4SLinus Torvalds if (addr) { 12101da177e4SLinus Torvalds addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit); 12111da177e4SLinus Torvalds if (addr != (unsigned long) -ENOMEM) 12121da177e4SLinus Torvalds return addr; 12131da177e4SLinus Torvalds } 12141da177e4SLinus Torvalds 12151da177e4SLinus Torvalds /* Next, try allocating at TASK_UNMAPPED_BASE. */ 12161da177e4SLinus Torvalds addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE), 12171da177e4SLinus Torvalds len, limit); 12181da177e4SLinus Torvalds if (addr != (unsigned long) -ENOMEM) 12191da177e4SLinus Torvalds return addr; 12201da177e4SLinus Torvalds 12211da177e4SLinus Torvalds /* Finally, try allocating in low memory. */ 12221da177e4SLinus Torvalds addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit); 12231da177e4SLinus Torvalds 12241da177e4SLinus Torvalds return addr; 12251da177e4SLinus Torvalds } 12261da177e4SLinus Torvalds 12271da177e4SLinus Torvalds #ifdef CONFIG_OSF4_COMPAT 12281da177e4SLinus Torvalds 12291da177e4SLinus Torvalds /* Clear top 32 bits of iov_len in the user's buffer for 12301da177e4SLinus Torvalds compatibility with old versions of OSF/1 where iov_len 12311da177e4SLinus Torvalds was defined as int. */ 12321da177e4SLinus Torvalds static int 12331da177e4SLinus Torvalds osf_fix_iov_len(const struct iovec __user *iov, unsigned long count) 12341da177e4SLinus Torvalds { 12351da177e4SLinus Torvalds unsigned long i; 12361da177e4SLinus Torvalds 12371da177e4SLinus Torvalds for (i = 0 ; i < count ; i++) { 12381da177e4SLinus Torvalds int __user *iov_len_high = (int __user *)&iov[i].iov_len + 1; 12391da177e4SLinus Torvalds 12401da177e4SLinus Torvalds if (put_user(0, iov_len_high)) 12411da177e4SLinus Torvalds return -EFAULT; 12421da177e4SLinus Torvalds } 12431da177e4SLinus Torvalds return 0; 12441da177e4SLinus Torvalds } 12451da177e4SLinus Torvalds 1246e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE3(osf_readv, unsigned long, fd, 1247e5d9a90cSIvan Kokshaysky const struct iovec __user *, vector, unsigned long, count) 12481da177e4SLinus Torvalds { 12491da177e4SLinus Torvalds if (unlikely(personality(current->personality) == PER_OSF4)) 12501da177e4SLinus Torvalds if (osf_fix_iov_len(vector, count)) 12511da177e4SLinus Torvalds return -EFAULT; 12521da177e4SLinus Torvalds return sys_readv(fd, vector, count); 12531da177e4SLinus Torvalds } 12541da177e4SLinus Torvalds 1255e5d9a90cSIvan Kokshaysky SYSCALL_DEFINE3(osf_writev, unsigned long, fd, 1256e5d9a90cSIvan Kokshaysky const struct iovec __user *, vector, unsigned long, count) 12571da177e4SLinus Torvalds { 12581da177e4SLinus Torvalds if (unlikely(personality(current->personality) == PER_OSF4)) 12591da177e4SLinus Torvalds if (osf_fix_iov_len(vector, count)) 12601da177e4SLinus Torvalds return -EFAULT; 12611da177e4SLinus Torvalds return sys_writev(fd, vector, count); 12621da177e4SLinus Torvalds } 12631da177e4SLinus Torvalds 12641da177e4SLinus Torvalds #endif 1265