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 extern int do_pipe(int *); 501da177e4SLinus Torvalds 511da177e4SLinus Torvalds /* 521da177e4SLinus Torvalds * Brk needs to return an error. Still support Linux's brk(0) query idiom, 531da177e4SLinus Torvalds * which OSF programs just shouldn't be doing. We're still not quite 541da177e4SLinus Torvalds * identical to OSF as we don't return 0 on success, but doing otherwise 551da177e4SLinus Torvalds * would require changes to libc. Hopefully this is good enough. 561da177e4SLinus Torvalds */ 571da177e4SLinus Torvalds asmlinkage unsigned long 581da177e4SLinus Torvalds osf_brk(unsigned long brk) 591da177e4SLinus Torvalds { 601da177e4SLinus Torvalds unsigned long retval = sys_brk(brk); 611da177e4SLinus Torvalds if (brk && brk != retval) 621da177e4SLinus Torvalds retval = -ENOMEM; 631da177e4SLinus Torvalds return retval; 641da177e4SLinus Torvalds } 651da177e4SLinus Torvalds 661da177e4SLinus Torvalds /* 671da177e4SLinus Torvalds * This is pure guess-work.. 681da177e4SLinus Torvalds */ 691da177e4SLinus Torvalds asmlinkage int 701da177e4SLinus Torvalds osf_set_program_attributes(unsigned long text_start, unsigned long text_len, 711da177e4SLinus Torvalds unsigned long bss_start, unsigned long bss_len) 721da177e4SLinus Torvalds { 731da177e4SLinus Torvalds struct mm_struct *mm; 741da177e4SLinus Torvalds 751da177e4SLinus Torvalds lock_kernel(); 761da177e4SLinus Torvalds mm = current->mm; 771da177e4SLinus Torvalds mm->end_code = bss_start + bss_len; 782444e56bSIvan Kokshaysky mm->start_brk = bss_start + bss_len; 791da177e4SLinus Torvalds mm->brk = bss_start + bss_len; 801da177e4SLinus Torvalds #if 0 811da177e4SLinus Torvalds printk("set_program_attributes(%lx %lx %lx %lx)\n", 821da177e4SLinus Torvalds text_start, text_len, bss_start, bss_len); 831da177e4SLinus Torvalds #endif 841da177e4SLinus Torvalds unlock_kernel(); 851da177e4SLinus Torvalds return 0; 861da177e4SLinus Torvalds } 871da177e4SLinus Torvalds 881da177e4SLinus Torvalds /* 891da177e4SLinus Torvalds * OSF/1 directory handling functions... 901da177e4SLinus Torvalds * 911da177e4SLinus Torvalds * The "getdents()" interface is much more sane: the "basep" stuff is 921da177e4SLinus Torvalds * braindamage (it can't really handle filesystems where the directory 931da177e4SLinus Torvalds * offset differences aren't the same as "d_reclen"). 941da177e4SLinus Torvalds */ 951da177e4SLinus Torvalds #define NAME_OFFSET offsetof (struct osf_dirent, d_name) 961da177e4SLinus Torvalds 971da177e4SLinus Torvalds struct osf_dirent { 981da177e4SLinus Torvalds unsigned int d_ino; 991da177e4SLinus Torvalds unsigned short d_reclen; 1001da177e4SLinus Torvalds unsigned short d_namlen; 1011da177e4SLinus Torvalds char d_name[1]; 1021da177e4SLinus Torvalds }; 1031da177e4SLinus Torvalds 1041da177e4SLinus Torvalds struct osf_dirent_callback { 1051da177e4SLinus Torvalds struct osf_dirent __user *dirent; 1061da177e4SLinus Torvalds long __user *basep; 1071da177e4SLinus Torvalds unsigned int count; 1081da177e4SLinus Torvalds int error; 1091da177e4SLinus Torvalds }; 1101da177e4SLinus Torvalds 1111da177e4SLinus Torvalds static int 1121da177e4SLinus Torvalds osf_filldir(void *__buf, const char *name, int namlen, loff_t offset, 113afefdbb2SDavid Howells u64 ino, unsigned int d_type) 1141da177e4SLinus Torvalds { 1151da177e4SLinus Torvalds struct osf_dirent __user *dirent; 1161da177e4SLinus Torvalds struct osf_dirent_callback *buf = (struct osf_dirent_callback *) __buf; 117180e53a7SMilind Arun Choudhary unsigned int reclen = ALIGN(NAME_OFFSET + namlen + 1, sizeof(u32)); 118afefdbb2SDavid Howells unsigned int d_ino; 1191da177e4SLinus Torvalds 1201da177e4SLinus Torvalds buf->error = -EINVAL; /* only used if we fail */ 1211da177e4SLinus Torvalds if (reclen > buf->count) 1221da177e4SLinus Torvalds return -EINVAL; 123afefdbb2SDavid Howells d_ino = ino; 124645e68edSAl Viro if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) { 125645e68edSAl Viro buf->error = -EOVERFLOW; 126afefdbb2SDavid Howells return -EOVERFLOW; 127645e68edSAl Viro } 1281da177e4SLinus Torvalds if (buf->basep) { 1291da177e4SLinus Torvalds if (put_user(offset, buf->basep)) 130645e68edSAl Viro goto Efault; 1311da177e4SLinus Torvalds buf->basep = NULL; 1321da177e4SLinus Torvalds } 1331da177e4SLinus Torvalds dirent = buf->dirent; 134645e68edSAl Viro if (put_user(d_ino, &dirent->d_ino) || 135645e68edSAl Viro put_user(namlen, &dirent->d_namlen) || 136645e68edSAl Viro put_user(reclen, &dirent->d_reclen) || 137645e68edSAl Viro copy_to_user(dirent->d_name, name, namlen) || 1381da177e4SLinus Torvalds put_user(0, dirent->d_name + namlen)) 139645e68edSAl Viro goto Efault; 1401da177e4SLinus Torvalds dirent = (void __user *)dirent + reclen; 1411da177e4SLinus Torvalds buf->dirent = dirent; 1421da177e4SLinus Torvalds buf->count -= reclen; 1431da177e4SLinus Torvalds return 0; 144645e68edSAl Viro Efault: 145645e68edSAl Viro buf->error = -EFAULT; 146645e68edSAl Viro return -EFAULT; 1471da177e4SLinus Torvalds } 1481da177e4SLinus Torvalds 1491da177e4SLinus Torvalds asmlinkage int 1501da177e4SLinus Torvalds osf_getdirentries(unsigned int fd, struct osf_dirent __user *dirent, 1511da177e4SLinus Torvalds unsigned int count, long __user *basep) 1521da177e4SLinus Torvalds { 1531da177e4SLinus Torvalds int error; 1541da177e4SLinus Torvalds struct file *file; 1551da177e4SLinus Torvalds struct osf_dirent_callback buf; 1561da177e4SLinus Torvalds 1571da177e4SLinus Torvalds error = -EBADF; 1581da177e4SLinus Torvalds file = fget(fd); 1591da177e4SLinus Torvalds if (!file) 1601da177e4SLinus Torvalds goto out; 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds buf.dirent = dirent; 1631da177e4SLinus Torvalds buf.basep = basep; 1641da177e4SLinus Torvalds buf.count = count; 1651da177e4SLinus Torvalds buf.error = 0; 1661da177e4SLinus Torvalds 1671da177e4SLinus Torvalds error = vfs_readdir(file, osf_filldir, &buf); 16853c9c5c0SAl Viro if (error >= 0) 1691da177e4SLinus Torvalds error = buf.error; 1701da177e4SLinus Torvalds if (count != buf.count) 1711da177e4SLinus Torvalds error = count - buf.count; 1721da177e4SLinus Torvalds 1731da177e4SLinus Torvalds fput(file); 1741da177e4SLinus Torvalds out: 1751da177e4SLinus Torvalds return error; 1761da177e4SLinus Torvalds } 1771da177e4SLinus Torvalds 1781da177e4SLinus Torvalds #undef NAME_OFFSET 1791da177e4SLinus Torvalds 1801da177e4SLinus Torvalds asmlinkage unsigned long 1811da177e4SLinus Torvalds osf_mmap(unsigned long addr, unsigned long len, unsigned long prot, 1821da177e4SLinus Torvalds unsigned long flags, unsigned long fd, unsigned long off) 1831da177e4SLinus Torvalds { 1841da177e4SLinus Torvalds struct file *file = NULL; 1851da177e4SLinus Torvalds unsigned long ret = -EBADF; 1861da177e4SLinus Torvalds 1871da177e4SLinus Torvalds #if 0 1881da177e4SLinus Torvalds if (flags & (_MAP_HASSEMAPHORE | _MAP_INHERIT | _MAP_UNALIGNED)) 1891da177e4SLinus Torvalds printk("%s: unimplemented OSF mmap flags %04lx\n", 1901da177e4SLinus Torvalds current->comm, flags); 1911da177e4SLinus Torvalds #endif 1921da177e4SLinus Torvalds if (!(flags & MAP_ANONYMOUS)) { 1931da177e4SLinus Torvalds file = fget(fd); 1941da177e4SLinus Torvalds if (!file) 1951da177e4SLinus Torvalds goto out; 1961da177e4SLinus Torvalds } 1971da177e4SLinus Torvalds flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); 1981da177e4SLinus Torvalds down_write(¤t->mm->mmap_sem); 1991da177e4SLinus Torvalds ret = do_mmap(file, addr, len, prot, flags, off); 2001da177e4SLinus Torvalds up_write(¤t->mm->mmap_sem); 2011da177e4SLinus Torvalds if (file) 2021da177e4SLinus Torvalds fput(file); 2031da177e4SLinus Torvalds out: 2041da177e4SLinus Torvalds return ret; 2051da177e4SLinus Torvalds } 2061da177e4SLinus Torvalds 2071da177e4SLinus Torvalds 2081da177e4SLinus Torvalds /* 2091da177e4SLinus Torvalds * The OSF/1 statfs structure is much larger, but this should 2101da177e4SLinus Torvalds * match the beginning, at least. 2111da177e4SLinus Torvalds */ 2121da177e4SLinus Torvalds struct osf_statfs { 2131da177e4SLinus Torvalds short f_type; 2141da177e4SLinus Torvalds short f_flags; 2151da177e4SLinus Torvalds int f_fsize; 2161da177e4SLinus Torvalds int f_bsize; 2171da177e4SLinus Torvalds int f_blocks; 2181da177e4SLinus Torvalds int f_bfree; 2191da177e4SLinus Torvalds int f_bavail; 2201da177e4SLinus Torvalds int f_files; 2211da177e4SLinus Torvalds int f_ffree; 2221da177e4SLinus Torvalds __kernel_fsid_t f_fsid; 2231da177e4SLinus Torvalds }; 2241da177e4SLinus Torvalds 2251da177e4SLinus Torvalds static int 2261da177e4SLinus Torvalds linux_to_osf_statfs(struct kstatfs *linux_stat, struct osf_statfs __user *osf_stat, 2271da177e4SLinus Torvalds unsigned long bufsiz) 2281da177e4SLinus Torvalds { 2291da177e4SLinus Torvalds struct osf_statfs tmp_stat; 2301da177e4SLinus Torvalds 2311da177e4SLinus Torvalds tmp_stat.f_type = linux_stat->f_type; 2321da177e4SLinus Torvalds tmp_stat.f_flags = 0; /* mount flags */ 2331da177e4SLinus Torvalds tmp_stat.f_fsize = linux_stat->f_frsize; 2341da177e4SLinus Torvalds tmp_stat.f_bsize = linux_stat->f_bsize; 2351da177e4SLinus Torvalds tmp_stat.f_blocks = linux_stat->f_blocks; 2361da177e4SLinus Torvalds tmp_stat.f_bfree = linux_stat->f_bfree; 2371da177e4SLinus Torvalds tmp_stat.f_bavail = linux_stat->f_bavail; 2381da177e4SLinus Torvalds tmp_stat.f_files = linux_stat->f_files; 2391da177e4SLinus Torvalds tmp_stat.f_ffree = linux_stat->f_ffree; 2401da177e4SLinus Torvalds tmp_stat.f_fsid = linux_stat->f_fsid; 2411da177e4SLinus Torvalds if (bufsiz > sizeof(tmp_stat)) 2421da177e4SLinus Torvalds bufsiz = sizeof(tmp_stat); 2431da177e4SLinus Torvalds return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0; 2441da177e4SLinus Torvalds } 2451da177e4SLinus Torvalds 2461da177e4SLinus Torvalds static int 2471da177e4SLinus Torvalds do_osf_statfs(struct dentry * dentry, struct osf_statfs __user *buffer, 2481da177e4SLinus Torvalds unsigned long bufsiz) 2491da177e4SLinus Torvalds { 2501da177e4SLinus Torvalds struct kstatfs linux_stat; 251726c3342SDavid Howells int error = vfs_statfs(dentry, &linux_stat); 2521da177e4SLinus Torvalds if (!error) 2531da177e4SLinus Torvalds error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz); 2541da177e4SLinus Torvalds return error; 2551da177e4SLinus Torvalds } 2561da177e4SLinus Torvalds 2571da177e4SLinus Torvalds asmlinkage int 2582d8f3038SAl Viro osf_statfs(char __user *pathname, struct osf_statfs __user *buffer, unsigned long bufsiz) 2591da177e4SLinus Torvalds { 2602d8f3038SAl Viro struct path path; 2611da177e4SLinus Torvalds int retval; 2621da177e4SLinus Torvalds 2632d8f3038SAl Viro retval = user_path(pathname, &path); 2641da177e4SLinus Torvalds if (!retval) { 2652d8f3038SAl Viro retval = do_osf_statfs(path.dentry, buffer, bufsiz); 2662d8f3038SAl Viro path_put(&path); 2671da177e4SLinus Torvalds } 2681da177e4SLinus Torvalds return retval; 2691da177e4SLinus Torvalds } 2701da177e4SLinus Torvalds 2711da177e4SLinus Torvalds asmlinkage int 2721da177e4SLinus Torvalds osf_fstatfs(unsigned long fd, struct osf_statfs __user *buffer, unsigned long bufsiz) 2731da177e4SLinus Torvalds { 2741da177e4SLinus Torvalds struct file *file; 2751da177e4SLinus Torvalds int retval; 2761da177e4SLinus Torvalds 2771da177e4SLinus Torvalds retval = -EBADF; 2781da177e4SLinus Torvalds file = fget(fd); 2791da177e4SLinus Torvalds if (file) { 2808ac0352bSJosef Sipek retval = do_osf_statfs(file->f_path.dentry, buffer, bufsiz); 2811da177e4SLinus Torvalds fput(file); 2821da177e4SLinus Torvalds } 2831da177e4SLinus Torvalds return retval; 2841da177e4SLinus Torvalds } 2851da177e4SLinus Torvalds 2861da177e4SLinus Torvalds /* 2871da177e4SLinus Torvalds * Uhh.. OSF/1 mount parameters aren't exactly obvious.. 2881da177e4SLinus Torvalds * 2891da177e4SLinus Torvalds * Although to be frank, neither are the native Linux/i386 ones.. 2901da177e4SLinus Torvalds */ 2911da177e4SLinus Torvalds struct ufs_args { 2921da177e4SLinus Torvalds char __user *devname; 2931da177e4SLinus Torvalds int flags; 2941da177e4SLinus Torvalds uid_t exroot; 2951da177e4SLinus Torvalds }; 2961da177e4SLinus Torvalds 2971da177e4SLinus Torvalds struct cdfs_args { 2981da177e4SLinus Torvalds char __user *devname; 2991da177e4SLinus Torvalds int flags; 3001da177e4SLinus Torvalds uid_t exroot; 3011da177e4SLinus Torvalds 3021da177e4SLinus Torvalds /* This has lots more here, which Linux handles with the option block 3031da177e4SLinus Torvalds but I'm too lazy to do the translation into ASCII. */ 3041da177e4SLinus Torvalds }; 3051da177e4SLinus Torvalds 3061da177e4SLinus Torvalds struct procfs_args { 3071da177e4SLinus Torvalds char __user *devname; 3081da177e4SLinus Torvalds int flags; 3091da177e4SLinus Torvalds uid_t exroot; 3101da177e4SLinus Torvalds }; 3111da177e4SLinus Torvalds 3121da177e4SLinus Torvalds /* 3131da177e4SLinus Torvalds * We can't actually handle ufs yet, so we translate UFS mounts to 3141da177e4SLinus Torvalds * ext2fs mounts. I wouldn't mind a UFS filesystem, but the UFS 3151da177e4SLinus Torvalds * layout is so braindead it's a major headache doing it. 3161da177e4SLinus Torvalds * 3171da177e4SLinus Torvalds * Just how long ago was it written? OTOH our UFS driver may be still 3181da177e4SLinus Torvalds * unhappy with OSF UFS. [CHECKME] 3191da177e4SLinus Torvalds */ 3201da177e4SLinus Torvalds static int 3211da177e4SLinus Torvalds osf_ufs_mount(char *dirname, struct ufs_args __user *args, int flags) 3221da177e4SLinus Torvalds { 3231da177e4SLinus Torvalds int retval; 3241da177e4SLinus Torvalds struct cdfs_args tmp; 3251da177e4SLinus Torvalds char *devname; 3261da177e4SLinus Torvalds 3271da177e4SLinus Torvalds retval = -EFAULT; 3281da177e4SLinus Torvalds if (copy_from_user(&tmp, args, sizeof(tmp))) 3291da177e4SLinus Torvalds goto out; 3301da177e4SLinus Torvalds devname = getname(tmp.devname); 3311da177e4SLinus Torvalds retval = PTR_ERR(devname); 3321da177e4SLinus Torvalds if (IS_ERR(devname)) 3331da177e4SLinus Torvalds goto out; 3341da177e4SLinus Torvalds retval = do_mount(devname, dirname, "ext2", flags, NULL); 3351da177e4SLinus Torvalds putname(devname); 3361da177e4SLinus Torvalds out: 3371da177e4SLinus Torvalds return retval; 3381da177e4SLinus Torvalds } 3391da177e4SLinus Torvalds 3401da177e4SLinus Torvalds static int 3411da177e4SLinus Torvalds osf_cdfs_mount(char *dirname, struct cdfs_args __user *args, int flags) 3421da177e4SLinus Torvalds { 3431da177e4SLinus Torvalds int retval; 3441da177e4SLinus Torvalds struct cdfs_args tmp; 3451da177e4SLinus Torvalds char *devname; 3461da177e4SLinus Torvalds 3471da177e4SLinus Torvalds retval = -EFAULT; 3481da177e4SLinus Torvalds if (copy_from_user(&tmp, args, sizeof(tmp))) 3491da177e4SLinus Torvalds goto out; 3501da177e4SLinus Torvalds devname = getname(tmp.devname); 3511da177e4SLinus Torvalds retval = PTR_ERR(devname); 3521da177e4SLinus Torvalds if (IS_ERR(devname)) 3531da177e4SLinus Torvalds goto out; 3541da177e4SLinus Torvalds retval = do_mount(devname, dirname, "iso9660", flags, NULL); 3551da177e4SLinus Torvalds putname(devname); 3561da177e4SLinus Torvalds out: 3571da177e4SLinus Torvalds return retval; 3581da177e4SLinus Torvalds } 3591da177e4SLinus Torvalds 3601da177e4SLinus Torvalds static int 3611da177e4SLinus Torvalds osf_procfs_mount(char *dirname, struct procfs_args __user *args, int flags) 3621da177e4SLinus Torvalds { 3631da177e4SLinus Torvalds struct procfs_args tmp; 3641da177e4SLinus Torvalds 3651da177e4SLinus Torvalds if (copy_from_user(&tmp, args, sizeof(tmp))) 3661da177e4SLinus Torvalds return -EFAULT; 3671da177e4SLinus Torvalds 3681da177e4SLinus Torvalds return do_mount("", dirname, "proc", flags, NULL); 3691da177e4SLinus Torvalds } 3701da177e4SLinus Torvalds 3711da177e4SLinus Torvalds asmlinkage int 3721da177e4SLinus Torvalds osf_mount(unsigned long typenr, char __user *path, int flag, void __user *data) 3731da177e4SLinus Torvalds { 3741da177e4SLinus Torvalds int retval = -EINVAL; 3751da177e4SLinus Torvalds char *name; 3761da177e4SLinus Torvalds 3771da177e4SLinus Torvalds lock_kernel(); 3781da177e4SLinus Torvalds 3791da177e4SLinus Torvalds name = getname(path); 3801da177e4SLinus Torvalds retval = PTR_ERR(name); 3811da177e4SLinus Torvalds if (IS_ERR(name)) 3821da177e4SLinus Torvalds goto out; 3831da177e4SLinus Torvalds switch (typenr) { 3841da177e4SLinus Torvalds case 1: 3851da177e4SLinus Torvalds retval = osf_ufs_mount(name, data, flag); 3861da177e4SLinus Torvalds break; 3871da177e4SLinus Torvalds case 6: 3881da177e4SLinus Torvalds retval = osf_cdfs_mount(name, data, flag); 3891da177e4SLinus Torvalds break; 3901da177e4SLinus Torvalds case 9: 3911da177e4SLinus Torvalds retval = osf_procfs_mount(name, data, flag); 3921da177e4SLinus Torvalds break; 3931da177e4SLinus Torvalds default: 3941da177e4SLinus Torvalds printk("osf_mount(%ld, %x)\n", typenr, flag); 3951da177e4SLinus Torvalds } 3961da177e4SLinus Torvalds putname(name); 3971da177e4SLinus Torvalds out: 3981da177e4SLinus Torvalds unlock_kernel(); 3991da177e4SLinus Torvalds return retval; 4001da177e4SLinus Torvalds } 4011da177e4SLinus Torvalds 4021da177e4SLinus Torvalds asmlinkage int 4031da177e4SLinus Torvalds osf_utsname(char __user *name) 4041da177e4SLinus Torvalds { 4051da177e4SLinus Torvalds int error; 4061da177e4SLinus Torvalds 4071da177e4SLinus Torvalds down_read(&uts_sem); 4081da177e4SLinus Torvalds error = -EFAULT; 409e9ff3990SSerge E. Hallyn if (copy_to_user(name + 0, utsname()->sysname, 32)) 4101da177e4SLinus Torvalds goto out; 411e9ff3990SSerge E. Hallyn if (copy_to_user(name + 32, utsname()->nodename, 32)) 4121da177e4SLinus Torvalds goto out; 413e9ff3990SSerge E. Hallyn if (copy_to_user(name + 64, utsname()->release, 32)) 4141da177e4SLinus Torvalds goto out; 415e9ff3990SSerge E. Hallyn if (copy_to_user(name + 96, utsname()->version, 32)) 4161da177e4SLinus Torvalds goto out; 417e9ff3990SSerge E. Hallyn if (copy_to_user(name + 128, utsname()->machine, 32)) 4181da177e4SLinus Torvalds goto out; 4191da177e4SLinus Torvalds 4201da177e4SLinus Torvalds error = 0; 4211da177e4SLinus Torvalds out: 4221da177e4SLinus Torvalds up_read(&uts_sem); 4231da177e4SLinus Torvalds return error; 4241da177e4SLinus Torvalds } 4251da177e4SLinus Torvalds 4261da177e4SLinus Torvalds asmlinkage unsigned long 4271da177e4SLinus Torvalds sys_getpagesize(void) 4281da177e4SLinus Torvalds { 4291da177e4SLinus Torvalds return PAGE_SIZE; 4301da177e4SLinus Torvalds } 4311da177e4SLinus Torvalds 4321da177e4SLinus Torvalds asmlinkage unsigned long 4331da177e4SLinus Torvalds sys_getdtablesize(void) 4341da177e4SLinus Torvalds { 4359cfe015aSEric Dumazet return sysctl_nr_open; 4361da177e4SLinus Torvalds } 4371da177e4SLinus Torvalds 4381da177e4SLinus Torvalds /* 4391da177e4SLinus Torvalds * For compatibility with OSF/1 only. Use utsname(2) instead. 4401da177e4SLinus Torvalds */ 4411da177e4SLinus Torvalds asmlinkage int 4421da177e4SLinus Torvalds osf_getdomainname(char __user *name, int namelen) 4431da177e4SLinus Torvalds { 4441da177e4SLinus Torvalds unsigned len; 4451da177e4SLinus Torvalds int i; 4461da177e4SLinus Torvalds 4471da177e4SLinus Torvalds if (!access_ok(VERIFY_WRITE, name, namelen)) 4481da177e4SLinus Torvalds return -EFAULT; 4491da177e4SLinus Torvalds 4501da177e4SLinus Torvalds len = namelen; 4511da177e4SLinus Torvalds if (namelen > 32) 4521da177e4SLinus Torvalds len = 32; 4531da177e4SLinus Torvalds 4541da177e4SLinus Torvalds down_read(&uts_sem); 4551da177e4SLinus Torvalds for (i = 0; i < len; ++i) { 456e9ff3990SSerge E. Hallyn __put_user(utsname()->domainname[i], name + i); 457e9ff3990SSerge E. Hallyn if (utsname()->domainname[i] == '\0') 4581da177e4SLinus Torvalds break; 4591da177e4SLinus Torvalds } 4601da177e4SLinus Torvalds up_read(&uts_sem); 4611da177e4SLinus Torvalds 4621da177e4SLinus Torvalds return 0; 4631da177e4SLinus Torvalds } 4641da177e4SLinus Torvalds 4651da177e4SLinus Torvalds /* 4661da177e4SLinus Torvalds * The following stuff should move into a header file should it ever 4671da177e4SLinus Torvalds * be labeled "officially supported." Right now, there is just enough 4681da177e4SLinus Torvalds * support to avoid applications (such as tar) printing error 4691da177e4SLinus Torvalds * messages. The attributes are not really implemented. 4701da177e4SLinus Torvalds */ 4711da177e4SLinus Torvalds 4721da177e4SLinus Torvalds /* 4731da177e4SLinus Torvalds * Values for Property list entry flag 4741da177e4SLinus Torvalds */ 4751da177e4SLinus Torvalds #define PLE_PROPAGATE_ON_COPY 0x1 /* cp(1) will copy entry 4761da177e4SLinus Torvalds by default */ 4771da177e4SLinus Torvalds #define PLE_FLAG_MASK 0x1 /* Valid flag values */ 4781da177e4SLinus Torvalds #define PLE_FLAG_ALL -1 /* All flag value */ 4791da177e4SLinus Torvalds 4801da177e4SLinus Torvalds struct proplistname_args { 4811da177e4SLinus Torvalds unsigned int pl_mask; 4821da177e4SLinus Torvalds unsigned int pl_numnames; 4831da177e4SLinus Torvalds char **pl_names; 4841da177e4SLinus Torvalds }; 4851da177e4SLinus Torvalds 4861da177e4SLinus Torvalds union pl_args { 4871da177e4SLinus Torvalds struct setargs { 4881da177e4SLinus Torvalds char __user *path; 4891da177e4SLinus Torvalds long follow; 4901da177e4SLinus Torvalds long nbytes; 4911da177e4SLinus Torvalds char __user *buf; 4921da177e4SLinus Torvalds } set; 4931da177e4SLinus Torvalds struct fsetargs { 4941da177e4SLinus Torvalds long fd; 4951da177e4SLinus Torvalds long nbytes; 4961da177e4SLinus Torvalds char __user *buf; 4971da177e4SLinus Torvalds } fset; 4981da177e4SLinus Torvalds struct getargs { 4991da177e4SLinus Torvalds char __user *path; 5001da177e4SLinus Torvalds long follow; 5011da177e4SLinus Torvalds struct proplistname_args __user *name_args; 5021da177e4SLinus Torvalds long nbytes; 5031da177e4SLinus Torvalds char __user *buf; 5041da177e4SLinus Torvalds int __user *min_buf_size; 5051da177e4SLinus Torvalds } get; 5061da177e4SLinus Torvalds struct fgetargs { 5071da177e4SLinus Torvalds long fd; 5081da177e4SLinus Torvalds struct proplistname_args __user *name_args; 5091da177e4SLinus Torvalds long nbytes; 5101da177e4SLinus Torvalds char __user *buf; 5111da177e4SLinus Torvalds int __user *min_buf_size; 5121da177e4SLinus Torvalds } fget; 5131da177e4SLinus Torvalds struct delargs { 5141da177e4SLinus Torvalds char __user *path; 5151da177e4SLinus Torvalds long follow; 5161da177e4SLinus Torvalds struct proplistname_args __user *name_args; 5171da177e4SLinus Torvalds } del; 5181da177e4SLinus Torvalds struct fdelargs { 5191da177e4SLinus Torvalds long fd; 5201da177e4SLinus Torvalds struct proplistname_args __user *name_args; 5211da177e4SLinus Torvalds } fdel; 5221da177e4SLinus Torvalds }; 5231da177e4SLinus Torvalds 5241da177e4SLinus Torvalds enum pl_code { 5251da177e4SLinus Torvalds PL_SET = 1, PL_FSET = 2, 5261da177e4SLinus Torvalds PL_GET = 3, PL_FGET = 4, 5271da177e4SLinus Torvalds PL_DEL = 5, PL_FDEL = 6 5281da177e4SLinus Torvalds }; 5291da177e4SLinus Torvalds 5301da177e4SLinus Torvalds asmlinkage long 5311da177e4SLinus Torvalds osf_proplist_syscall(enum pl_code code, union pl_args __user *args) 5321da177e4SLinus Torvalds { 5331da177e4SLinus Torvalds long error; 5341da177e4SLinus Torvalds int __user *min_buf_size_ptr; 5351da177e4SLinus Torvalds 5361da177e4SLinus Torvalds lock_kernel(); 5371da177e4SLinus Torvalds switch (code) { 5381da177e4SLinus Torvalds case PL_SET: 5391da177e4SLinus Torvalds if (get_user(error, &args->set.nbytes)) 5401da177e4SLinus Torvalds error = -EFAULT; 5411da177e4SLinus Torvalds break; 5421da177e4SLinus Torvalds case PL_FSET: 5431da177e4SLinus Torvalds if (get_user(error, &args->fset.nbytes)) 5441da177e4SLinus Torvalds error = -EFAULT; 5451da177e4SLinus Torvalds break; 5461da177e4SLinus Torvalds case PL_GET: 5471da177e4SLinus Torvalds error = get_user(min_buf_size_ptr, &args->get.min_buf_size); 5481da177e4SLinus Torvalds if (error) 5491da177e4SLinus Torvalds break; 5501da177e4SLinus Torvalds error = put_user(0, min_buf_size_ptr); 5511da177e4SLinus Torvalds break; 5521da177e4SLinus Torvalds case PL_FGET: 5531da177e4SLinus Torvalds error = get_user(min_buf_size_ptr, &args->fget.min_buf_size); 5541da177e4SLinus Torvalds if (error) 5551da177e4SLinus Torvalds break; 5561da177e4SLinus Torvalds error = put_user(0, min_buf_size_ptr); 5571da177e4SLinus Torvalds break; 5581da177e4SLinus Torvalds case PL_DEL: 5591da177e4SLinus Torvalds case PL_FDEL: 5601da177e4SLinus Torvalds error = 0; 5611da177e4SLinus Torvalds break; 5621da177e4SLinus Torvalds default: 5631da177e4SLinus Torvalds error = -EOPNOTSUPP; 5641da177e4SLinus Torvalds break; 5651da177e4SLinus Torvalds }; 5661da177e4SLinus Torvalds unlock_kernel(); 5671da177e4SLinus Torvalds return error; 5681da177e4SLinus Torvalds } 5691da177e4SLinus Torvalds 5701da177e4SLinus Torvalds asmlinkage int 5711da177e4SLinus Torvalds osf_sigstack(struct sigstack __user *uss, struct sigstack __user *uoss) 5721da177e4SLinus Torvalds { 5731da177e4SLinus Torvalds unsigned long usp = rdusp(); 5741da177e4SLinus Torvalds unsigned long oss_sp = current->sas_ss_sp + current->sas_ss_size; 5751da177e4SLinus Torvalds unsigned long oss_os = on_sig_stack(usp); 5761da177e4SLinus Torvalds int error; 5771da177e4SLinus Torvalds 5781da177e4SLinus Torvalds if (uss) { 5791da177e4SLinus Torvalds void __user *ss_sp; 5801da177e4SLinus Torvalds 5811da177e4SLinus Torvalds error = -EFAULT; 5821da177e4SLinus Torvalds if (get_user(ss_sp, &uss->ss_sp)) 5831da177e4SLinus Torvalds goto out; 5841da177e4SLinus Torvalds 5851da177e4SLinus Torvalds /* If the current stack was set with sigaltstack, don't 5861da177e4SLinus Torvalds swap stacks while we are on it. */ 5871da177e4SLinus Torvalds error = -EPERM; 5881da177e4SLinus Torvalds if (current->sas_ss_sp && on_sig_stack(usp)) 5891da177e4SLinus Torvalds goto out; 5901da177e4SLinus Torvalds 5911da177e4SLinus Torvalds /* Since we don't know the extent of the stack, and we don't 5921da177e4SLinus Torvalds track onstack-ness, but rather calculate it, we must 5931da177e4SLinus Torvalds presume a size. Ho hum this interface is lossy. */ 5941da177e4SLinus Torvalds current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ; 5951da177e4SLinus Torvalds current->sas_ss_size = SIGSTKSZ; 5961da177e4SLinus Torvalds } 5971da177e4SLinus Torvalds 5981da177e4SLinus Torvalds if (uoss) { 5991da177e4SLinus Torvalds error = -EFAULT; 6001da177e4SLinus Torvalds if (! access_ok(VERIFY_WRITE, uoss, sizeof(*uoss)) 6011da177e4SLinus Torvalds || __put_user(oss_sp, &uoss->ss_sp) 6021da177e4SLinus Torvalds || __put_user(oss_os, &uoss->ss_onstack)) 6031da177e4SLinus Torvalds goto out; 6041da177e4SLinus Torvalds } 6051da177e4SLinus Torvalds 6061da177e4SLinus Torvalds error = 0; 6071da177e4SLinus Torvalds out: 6081da177e4SLinus Torvalds return error; 6091da177e4SLinus Torvalds } 6101da177e4SLinus Torvalds 6111da177e4SLinus Torvalds asmlinkage long 6121da177e4SLinus Torvalds osf_sysinfo(int command, char __user *buf, long count) 6131da177e4SLinus Torvalds { 614e9ff3990SSerge E. Hallyn char *sysinfo_table[] = { 615e9ff3990SSerge E. Hallyn utsname()->sysname, 616e9ff3990SSerge E. Hallyn utsname()->nodename, 617e9ff3990SSerge E. Hallyn utsname()->release, 618e9ff3990SSerge E. Hallyn utsname()->version, 619e9ff3990SSerge E. Hallyn utsname()->machine, 6201da177e4SLinus Torvalds "alpha", /* instruction set architecture */ 6211da177e4SLinus Torvalds "dummy", /* hardware serial number */ 6221da177e4SLinus Torvalds "dummy", /* hardware manufacturer */ 6231da177e4SLinus Torvalds "dummy", /* secure RPC domain */ 6241da177e4SLinus Torvalds }; 6251da177e4SLinus Torvalds unsigned long offset; 6261da177e4SLinus Torvalds char *res; 6271da177e4SLinus Torvalds long len, err = -EINVAL; 6281da177e4SLinus Torvalds 6291da177e4SLinus Torvalds offset = command-1; 63025c8716cSTobias Klauser if (offset >= ARRAY_SIZE(sysinfo_table)) { 6311da177e4SLinus Torvalds /* Digital UNIX has a few unpublished interfaces here */ 6321da177e4SLinus Torvalds printk("sysinfo(%d)", command); 6331da177e4SLinus Torvalds goto out; 6341da177e4SLinus Torvalds } 6351da177e4SLinus Torvalds 6361da177e4SLinus Torvalds down_read(&uts_sem); 6371da177e4SLinus Torvalds res = sysinfo_table[offset]; 6381da177e4SLinus Torvalds len = strlen(res)+1; 6391da177e4SLinus Torvalds if (len > count) 6401da177e4SLinus Torvalds len = count; 6411da177e4SLinus Torvalds if (copy_to_user(buf, res, len)) 6421da177e4SLinus Torvalds err = -EFAULT; 6431da177e4SLinus Torvalds else 6441da177e4SLinus Torvalds err = 0; 6451da177e4SLinus Torvalds up_read(&uts_sem); 6461da177e4SLinus Torvalds out: 6471da177e4SLinus Torvalds return err; 6481da177e4SLinus Torvalds } 6491da177e4SLinus Torvalds 6501da177e4SLinus Torvalds asmlinkage unsigned long 6511da177e4SLinus Torvalds osf_getsysinfo(unsigned long op, void __user *buffer, unsigned long nbytes, 6521da177e4SLinus Torvalds int __user *start, void __user *arg) 6531da177e4SLinus Torvalds { 6541da177e4SLinus Torvalds unsigned long w; 6551da177e4SLinus Torvalds struct percpu_struct *cpu; 6561da177e4SLinus Torvalds 6571da177e4SLinus Torvalds switch (op) { 6581da177e4SLinus Torvalds case GSI_IEEE_FP_CONTROL: 6591da177e4SLinus Torvalds /* Return current software fp control & status bits. */ 6601da177e4SLinus Torvalds /* Note that DU doesn't verify available space here. */ 6611da177e4SLinus Torvalds 6621da177e4SLinus Torvalds w = current_thread_info()->ieee_state & IEEE_SW_MASK; 6631da177e4SLinus Torvalds w = swcr_update_status(w, rdfpcr()); 6641da177e4SLinus Torvalds if (put_user(w, (unsigned long __user *) buffer)) 6651da177e4SLinus Torvalds return -EFAULT; 6661da177e4SLinus Torvalds return 0; 6671da177e4SLinus Torvalds 6681da177e4SLinus Torvalds case GSI_IEEE_STATE_AT_SIGNAL: 6691da177e4SLinus Torvalds /* 6701da177e4SLinus Torvalds * Not sure anybody will ever use this weird stuff. These 6711da177e4SLinus Torvalds * ops can be used (under OSF/1) to set the fpcr that should 6721da177e4SLinus Torvalds * be used when a signal handler starts executing. 6731da177e4SLinus Torvalds */ 6741da177e4SLinus Torvalds break; 6751da177e4SLinus Torvalds 6761da177e4SLinus Torvalds case GSI_UACPROC: 6771da177e4SLinus Torvalds if (nbytes < sizeof(unsigned int)) 6781da177e4SLinus Torvalds return -EINVAL; 6791da177e4SLinus Torvalds w = (current_thread_info()->flags >> UAC_SHIFT) & UAC_BITMASK; 6801da177e4SLinus Torvalds if (put_user(w, (unsigned int __user *)buffer)) 6811da177e4SLinus Torvalds return -EFAULT; 6821da177e4SLinus Torvalds return 1; 6831da177e4SLinus Torvalds 6841da177e4SLinus Torvalds case GSI_PROC_TYPE: 6851da177e4SLinus Torvalds if (nbytes < sizeof(unsigned long)) 6861da177e4SLinus Torvalds return -EINVAL; 6871da177e4SLinus Torvalds cpu = (struct percpu_struct*) 6881da177e4SLinus Torvalds ((char*)hwrpb + hwrpb->processor_offset); 6891da177e4SLinus Torvalds w = cpu->type; 6901da177e4SLinus Torvalds if (put_user(w, (unsigned long __user*)buffer)) 6911da177e4SLinus Torvalds return -EFAULT; 6921da177e4SLinus Torvalds return 1; 6931da177e4SLinus Torvalds 6941da177e4SLinus Torvalds case GSI_GET_HWRPB: 6951da177e4SLinus Torvalds if (nbytes < sizeof(*hwrpb)) 6961da177e4SLinus Torvalds return -EINVAL; 6971da177e4SLinus Torvalds if (copy_to_user(buffer, hwrpb, nbytes) != 0) 6981da177e4SLinus Torvalds return -EFAULT; 6991da177e4SLinus Torvalds return 1; 7001da177e4SLinus Torvalds 7011da177e4SLinus Torvalds default: 7021da177e4SLinus Torvalds break; 7031da177e4SLinus Torvalds } 7041da177e4SLinus Torvalds 7051da177e4SLinus Torvalds return -EOPNOTSUPP; 7061da177e4SLinus Torvalds } 7071da177e4SLinus Torvalds 7081da177e4SLinus Torvalds asmlinkage unsigned long 7091da177e4SLinus Torvalds osf_setsysinfo(unsigned long op, void __user *buffer, unsigned long nbytes, 7101da177e4SLinus Torvalds int __user *start, void __user *arg) 7111da177e4SLinus Torvalds { 7121da177e4SLinus Torvalds switch (op) { 7131da177e4SLinus Torvalds case SSI_IEEE_FP_CONTROL: { 7141da177e4SLinus Torvalds unsigned long swcr, fpcr; 7151da177e4SLinus Torvalds unsigned int *state; 7161da177e4SLinus Torvalds 7171da177e4SLinus Torvalds /* 7181da177e4SLinus Torvalds * Alpha Architecture Handbook 4.7.7.3: 7191da177e4SLinus Torvalds * To be fully IEEE compiant, we must track the current IEEE 720c3a2ddeeSSimon Arlott * exception state in software, because spurious bits can be 7211da177e4SLinus Torvalds * set in the trap shadow of a software-complete insn. 7221da177e4SLinus Torvalds */ 7231da177e4SLinus Torvalds 7241da177e4SLinus Torvalds if (get_user(swcr, (unsigned long __user *)buffer)) 7251da177e4SLinus Torvalds return -EFAULT; 7261da177e4SLinus Torvalds state = ¤t_thread_info()->ieee_state; 7271da177e4SLinus Torvalds 7281da177e4SLinus Torvalds /* Update softare trap enable bits. */ 7291da177e4SLinus Torvalds *state = (*state & ~IEEE_SW_MASK) | (swcr & IEEE_SW_MASK); 7301da177e4SLinus Torvalds 7311da177e4SLinus Torvalds /* Update the real fpcr. */ 7321da177e4SLinus Torvalds fpcr = rdfpcr() & FPCR_DYN_MASK; 7331da177e4SLinus Torvalds fpcr |= ieee_swcr_to_fpcr(swcr); 7341da177e4SLinus Torvalds wrfpcr(fpcr); 7351da177e4SLinus Torvalds 7361da177e4SLinus Torvalds return 0; 7371da177e4SLinus Torvalds } 7381da177e4SLinus Torvalds 7391da177e4SLinus Torvalds case SSI_IEEE_RAISE_EXCEPTION: { 7401da177e4SLinus Torvalds unsigned long exc, swcr, fpcr, fex; 7411da177e4SLinus Torvalds unsigned int *state; 7421da177e4SLinus Torvalds 7431da177e4SLinus Torvalds if (get_user(exc, (unsigned long __user *)buffer)) 7441da177e4SLinus Torvalds return -EFAULT; 7451da177e4SLinus Torvalds state = ¤t_thread_info()->ieee_state; 7461da177e4SLinus Torvalds exc &= IEEE_STATUS_MASK; 7471da177e4SLinus Torvalds 7481da177e4SLinus Torvalds /* Update softare trap enable bits. */ 7491da177e4SLinus Torvalds swcr = (*state & IEEE_SW_MASK) | exc; 7501da177e4SLinus Torvalds *state |= exc; 7511da177e4SLinus Torvalds 7521da177e4SLinus Torvalds /* Update the real fpcr. */ 7531da177e4SLinus Torvalds fpcr = rdfpcr(); 7541da177e4SLinus Torvalds fpcr |= ieee_swcr_to_fpcr(swcr); 7551da177e4SLinus Torvalds wrfpcr(fpcr); 7561da177e4SLinus Torvalds 7571da177e4SLinus Torvalds /* If any exceptions set by this call, and are unmasked, 7581da177e4SLinus Torvalds send a signal. Old exceptions are not signaled. */ 7591da177e4SLinus Torvalds fex = (exc >> IEEE_STATUS_TO_EXCSUM_SHIFT) & swcr; 7601da177e4SLinus Torvalds if (fex) { 7611da177e4SLinus Torvalds siginfo_t info; 7621da177e4SLinus Torvalds int si_code = 0; 7631da177e4SLinus Torvalds 7641da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_DNO) si_code = FPE_FLTUND; 7651da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_INE) si_code = FPE_FLTRES; 7661da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_UNF) si_code = FPE_FLTUND; 7671da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_OVF) si_code = FPE_FLTOVF; 7681da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_DZE) si_code = FPE_FLTDIV; 7691da177e4SLinus Torvalds if (fex & IEEE_TRAP_ENABLE_INV) si_code = FPE_FLTINV; 7701da177e4SLinus Torvalds 7711da177e4SLinus Torvalds info.si_signo = SIGFPE; 7721da177e4SLinus Torvalds info.si_errno = 0; 7731da177e4SLinus Torvalds info.si_code = si_code; 7741da177e4SLinus Torvalds info.si_addr = NULL; /* FIXME */ 7751da177e4SLinus Torvalds send_sig_info(SIGFPE, &info, current); 7761da177e4SLinus Torvalds } 7771da177e4SLinus Torvalds return 0; 7781da177e4SLinus Torvalds } 7791da177e4SLinus Torvalds 7801da177e4SLinus Torvalds case SSI_IEEE_STATE_AT_SIGNAL: 7811da177e4SLinus Torvalds case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: 7821da177e4SLinus Torvalds /* 7831da177e4SLinus Torvalds * Not sure anybody will ever use this weird stuff. These 7841da177e4SLinus Torvalds * ops can be used (under OSF/1) to set the fpcr that should 7851da177e4SLinus Torvalds * be used when a signal handler starts executing. 7861da177e4SLinus Torvalds */ 7871da177e4SLinus Torvalds break; 7881da177e4SLinus Torvalds 7891da177e4SLinus Torvalds case SSI_NVPAIRS: { 7901da177e4SLinus Torvalds unsigned long v, w, i; 7911da177e4SLinus Torvalds unsigned int old, new; 7921da177e4SLinus Torvalds 7931da177e4SLinus Torvalds for (i = 0; i < nbytes; ++i) { 7941da177e4SLinus Torvalds 7951da177e4SLinus Torvalds if (get_user(v, 2*i + (unsigned int __user *)buffer)) 7961da177e4SLinus Torvalds return -EFAULT; 7971da177e4SLinus Torvalds if (get_user(w, 2*i + 1 + (unsigned int __user *)buffer)) 7981da177e4SLinus Torvalds return -EFAULT; 7991da177e4SLinus Torvalds switch (v) { 8001da177e4SLinus Torvalds case SSIN_UACPROC: 8011da177e4SLinus Torvalds again: 8021da177e4SLinus Torvalds old = current_thread_info()->flags; 8031da177e4SLinus Torvalds new = old & ~(UAC_BITMASK << UAC_SHIFT); 8041da177e4SLinus Torvalds new = new | (w & UAC_BITMASK) << UAC_SHIFT; 8051da177e4SLinus Torvalds if (cmpxchg(¤t_thread_info()->flags, 8061da177e4SLinus Torvalds old, new) != old) 8071da177e4SLinus Torvalds goto again; 8081da177e4SLinus Torvalds break; 8091da177e4SLinus Torvalds 8101da177e4SLinus Torvalds default: 8111da177e4SLinus Torvalds return -EOPNOTSUPP; 8121da177e4SLinus Torvalds } 8131da177e4SLinus Torvalds } 8141da177e4SLinus Torvalds return 0; 8151da177e4SLinus Torvalds } 8161da177e4SLinus Torvalds 8171da177e4SLinus Torvalds default: 8181da177e4SLinus Torvalds break; 8191da177e4SLinus Torvalds } 8201da177e4SLinus Torvalds 8211da177e4SLinus Torvalds return -EOPNOTSUPP; 8221da177e4SLinus Torvalds } 8231da177e4SLinus Torvalds 8241da177e4SLinus Torvalds /* Translations due to the fact that OSF's time_t is an int. Which 8251da177e4SLinus Torvalds affects all sorts of things, like timeval and itimerval. */ 8261da177e4SLinus Torvalds 8271da177e4SLinus Torvalds extern struct timezone sys_tz; 8281da177e4SLinus Torvalds 8291da177e4SLinus Torvalds struct timeval32 8301da177e4SLinus Torvalds { 8311da177e4SLinus Torvalds int tv_sec, tv_usec; 8321da177e4SLinus Torvalds }; 8331da177e4SLinus Torvalds 8341da177e4SLinus Torvalds struct itimerval32 8351da177e4SLinus Torvalds { 8361da177e4SLinus Torvalds struct timeval32 it_interval; 8371da177e4SLinus Torvalds struct timeval32 it_value; 8381da177e4SLinus Torvalds }; 8391da177e4SLinus Torvalds 8401da177e4SLinus Torvalds static inline long 8411da177e4SLinus Torvalds get_tv32(struct timeval *o, struct timeval32 __user *i) 8421da177e4SLinus Torvalds { 8431da177e4SLinus Torvalds return (!access_ok(VERIFY_READ, i, sizeof(*i)) || 8441da177e4SLinus Torvalds (__get_user(o->tv_sec, &i->tv_sec) | 8451da177e4SLinus Torvalds __get_user(o->tv_usec, &i->tv_usec))); 8461da177e4SLinus Torvalds } 8471da177e4SLinus Torvalds 8481da177e4SLinus Torvalds static inline long 8491da177e4SLinus Torvalds put_tv32(struct timeval32 __user *o, struct timeval *i) 8501da177e4SLinus Torvalds { 8511da177e4SLinus Torvalds return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || 8521da177e4SLinus Torvalds (__put_user(i->tv_sec, &o->tv_sec) | 8531da177e4SLinus Torvalds __put_user(i->tv_usec, &o->tv_usec))); 8541da177e4SLinus Torvalds } 8551da177e4SLinus Torvalds 8561da177e4SLinus Torvalds static inline long 8571da177e4SLinus Torvalds get_it32(struct itimerval *o, struct itimerval32 __user *i) 8581da177e4SLinus Torvalds { 8591da177e4SLinus Torvalds return (!access_ok(VERIFY_READ, i, sizeof(*i)) || 8601da177e4SLinus Torvalds (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) | 8611da177e4SLinus Torvalds __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) | 8621da177e4SLinus Torvalds __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) | 8631da177e4SLinus Torvalds __get_user(o->it_value.tv_usec, &i->it_value.tv_usec))); 8641da177e4SLinus Torvalds } 8651da177e4SLinus Torvalds 8661da177e4SLinus Torvalds static inline long 8671da177e4SLinus Torvalds put_it32(struct itimerval32 __user *o, struct itimerval *i) 8681da177e4SLinus Torvalds { 8691da177e4SLinus Torvalds return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || 8701da177e4SLinus Torvalds (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) | 8711da177e4SLinus Torvalds __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) | 8721da177e4SLinus Torvalds __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) | 8731da177e4SLinus Torvalds __put_user(i->it_value.tv_usec, &o->it_value.tv_usec))); 8741da177e4SLinus Torvalds } 8751da177e4SLinus Torvalds 8761da177e4SLinus Torvalds static inline void 8771da177e4SLinus Torvalds jiffies_to_timeval32(unsigned long jiffies, struct timeval32 *value) 8781da177e4SLinus Torvalds { 8791da177e4SLinus Torvalds value->tv_usec = (jiffies % HZ) * (1000000L / HZ); 8801da177e4SLinus Torvalds value->tv_sec = jiffies / HZ; 8811da177e4SLinus Torvalds } 8821da177e4SLinus Torvalds 8831da177e4SLinus Torvalds asmlinkage int 8841da177e4SLinus Torvalds osf_gettimeofday(struct timeval32 __user *tv, struct timezone __user *tz) 8851da177e4SLinus Torvalds { 8861da177e4SLinus Torvalds if (tv) { 8871da177e4SLinus Torvalds struct timeval ktv; 8881da177e4SLinus Torvalds do_gettimeofday(&ktv); 8891da177e4SLinus Torvalds if (put_tv32(tv, &ktv)) 8901da177e4SLinus Torvalds return -EFAULT; 8911da177e4SLinus Torvalds } 8921da177e4SLinus Torvalds if (tz) { 8931da177e4SLinus Torvalds if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) 8941da177e4SLinus Torvalds return -EFAULT; 8951da177e4SLinus Torvalds } 8961da177e4SLinus Torvalds return 0; 8971da177e4SLinus Torvalds } 8981da177e4SLinus Torvalds 8991da177e4SLinus Torvalds asmlinkage int 9001da177e4SLinus Torvalds osf_settimeofday(struct timeval32 __user *tv, struct timezone __user *tz) 9011da177e4SLinus Torvalds { 9021da177e4SLinus Torvalds struct timespec kts; 9031da177e4SLinus Torvalds struct timezone ktz; 9041da177e4SLinus Torvalds 9051da177e4SLinus Torvalds if (tv) { 9061da177e4SLinus Torvalds if (get_tv32((struct timeval *)&kts, tv)) 9071da177e4SLinus Torvalds return -EFAULT; 9081da177e4SLinus Torvalds } 9091da177e4SLinus Torvalds if (tz) { 9101da177e4SLinus Torvalds if (copy_from_user(&ktz, tz, sizeof(*tz))) 9111da177e4SLinus Torvalds return -EFAULT; 9121da177e4SLinus Torvalds } 9131da177e4SLinus Torvalds 9141da177e4SLinus Torvalds kts.tv_nsec *= 1000; 9151da177e4SLinus Torvalds 9161da177e4SLinus Torvalds return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); 9171da177e4SLinus Torvalds } 9181da177e4SLinus Torvalds 9191da177e4SLinus Torvalds asmlinkage int 9201da177e4SLinus Torvalds osf_getitimer(int which, struct itimerval32 __user *it) 9211da177e4SLinus Torvalds { 9221da177e4SLinus Torvalds struct itimerval kit; 9231da177e4SLinus Torvalds int error; 9241da177e4SLinus Torvalds 9251da177e4SLinus Torvalds error = do_getitimer(which, &kit); 9261da177e4SLinus Torvalds if (!error && put_it32(it, &kit)) 9271da177e4SLinus Torvalds error = -EFAULT; 9281da177e4SLinus Torvalds 9291da177e4SLinus Torvalds return error; 9301da177e4SLinus Torvalds } 9311da177e4SLinus Torvalds 9321da177e4SLinus Torvalds asmlinkage int 9331da177e4SLinus Torvalds osf_setitimer(int which, struct itimerval32 __user *in, struct itimerval32 __user *out) 9341da177e4SLinus Torvalds { 9351da177e4SLinus Torvalds struct itimerval kin, kout; 9361da177e4SLinus Torvalds int error; 9371da177e4SLinus Torvalds 9381da177e4SLinus Torvalds if (in) { 9391da177e4SLinus Torvalds if (get_it32(&kin, in)) 9401da177e4SLinus Torvalds return -EFAULT; 9411da177e4SLinus Torvalds } else 9421da177e4SLinus Torvalds memset(&kin, 0, sizeof(kin)); 9431da177e4SLinus Torvalds 9441da177e4SLinus Torvalds error = do_setitimer(which, &kin, out ? &kout : NULL); 9451da177e4SLinus Torvalds if (error || !out) 9461da177e4SLinus Torvalds return error; 9471da177e4SLinus Torvalds 9481da177e4SLinus Torvalds if (put_it32(out, &kout)) 9491da177e4SLinus Torvalds return -EFAULT; 9501da177e4SLinus Torvalds 9511da177e4SLinus Torvalds return 0; 9521da177e4SLinus Torvalds 9531da177e4SLinus Torvalds } 9541da177e4SLinus Torvalds 9551da177e4SLinus Torvalds asmlinkage int 9561da177e4SLinus Torvalds osf_utimes(char __user *filename, struct timeval32 __user *tvs) 9571da177e4SLinus Torvalds { 9581c710c89SUlrich Drepper struct timespec tv[2]; 9591da177e4SLinus Torvalds 9601da177e4SLinus Torvalds if (tvs) { 9611c710c89SUlrich Drepper struct timeval ktvs[2]; 9621da177e4SLinus Torvalds if (get_tv32(&ktvs[0], &tvs[0]) || 9631da177e4SLinus Torvalds get_tv32(&ktvs[1], &tvs[1])) 9641da177e4SLinus Torvalds return -EFAULT; 9651c710c89SUlrich Drepper 9661c710c89SUlrich Drepper if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 || 9671c710c89SUlrich Drepper ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000) 9681c710c89SUlrich Drepper return -EINVAL; 9691c710c89SUlrich Drepper 9701c710c89SUlrich Drepper tv[0].tv_sec = ktvs[0].tv_sec; 9711c710c89SUlrich Drepper tv[0].tv_nsec = 1000 * ktvs[0].tv_usec; 9721c710c89SUlrich Drepper tv[1].tv_sec = ktvs[1].tv_sec; 9731c710c89SUlrich Drepper tv[1].tv_nsec = 1000 * ktvs[1].tv_usec; 9741da177e4SLinus Torvalds } 9751da177e4SLinus Torvalds 9761c710c89SUlrich Drepper return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0); 9771da177e4SLinus Torvalds } 9781da177e4SLinus Torvalds 9791da177e4SLinus Torvalds #define MAX_SELECT_SECONDS \ 9801da177e4SLinus Torvalds ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1) 9811da177e4SLinus Torvalds 9821da177e4SLinus Torvalds asmlinkage int 9831da177e4SLinus Torvalds osf_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp, 9841da177e4SLinus Torvalds struct timeval32 __user *tvp) 9851da177e4SLinus Torvalds { 986a2dcb44cSAl Viro s64 timeout = MAX_SCHEDULE_TIMEOUT; 9871da177e4SLinus Torvalds if (tvp) { 9881da177e4SLinus Torvalds time_t sec, usec; 9891da177e4SLinus Torvalds 9901da177e4SLinus Torvalds if (!access_ok(VERIFY_READ, tvp, sizeof(*tvp)) 9911da177e4SLinus Torvalds || __get_user(sec, &tvp->tv_sec) 9921da177e4SLinus Torvalds || __get_user(usec, &tvp->tv_usec)) { 993a2dcb44cSAl Viro return -EFAULT; 9941da177e4SLinus Torvalds } 9951da177e4SLinus Torvalds 9961da177e4SLinus Torvalds if (sec < 0 || usec < 0) 997a2dcb44cSAl Viro return -EINVAL; 9981da177e4SLinus Torvalds 9991da177e4SLinus Torvalds if ((unsigned long) sec < MAX_SELECT_SECONDS) { 10001da177e4SLinus Torvalds timeout = (usec + 1000000/HZ - 1) / (1000000/HZ); 10011da177e4SLinus Torvalds timeout += sec * (unsigned long) HZ; 10021da177e4SLinus Torvalds } 10031da177e4SLinus Torvalds } 10041da177e4SLinus Torvalds 10051da177e4SLinus Torvalds /* OSF does not copy back the remaining time. */ 1006a2dcb44cSAl Viro return core_sys_select(n, inp, outp, exp, &timeout); 10071da177e4SLinus Torvalds } 10081da177e4SLinus Torvalds 10091da177e4SLinus Torvalds struct rusage32 { 10101da177e4SLinus Torvalds struct timeval32 ru_utime; /* user time used */ 10111da177e4SLinus Torvalds struct timeval32 ru_stime; /* system time used */ 10121da177e4SLinus Torvalds long ru_maxrss; /* maximum resident set size */ 10131da177e4SLinus Torvalds long ru_ixrss; /* integral shared memory size */ 10141da177e4SLinus Torvalds long ru_idrss; /* integral unshared data size */ 10151da177e4SLinus Torvalds long ru_isrss; /* integral unshared stack size */ 10161da177e4SLinus Torvalds long ru_minflt; /* page reclaims */ 10171da177e4SLinus Torvalds long ru_majflt; /* page faults */ 10181da177e4SLinus Torvalds long ru_nswap; /* swaps */ 10191da177e4SLinus Torvalds long ru_inblock; /* block input operations */ 10201da177e4SLinus Torvalds long ru_oublock; /* block output operations */ 10211da177e4SLinus Torvalds long ru_msgsnd; /* messages sent */ 10221da177e4SLinus Torvalds long ru_msgrcv; /* messages received */ 10231da177e4SLinus Torvalds long ru_nsignals; /* signals received */ 10241da177e4SLinus Torvalds long ru_nvcsw; /* voluntary context switches */ 10251da177e4SLinus Torvalds long ru_nivcsw; /* involuntary " */ 10261da177e4SLinus Torvalds }; 10271da177e4SLinus Torvalds 10281da177e4SLinus Torvalds asmlinkage int 10291da177e4SLinus Torvalds osf_getrusage(int who, struct rusage32 __user *ru) 10301da177e4SLinus Torvalds { 10311da177e4SLinus Torvalds struct rusage32 r; 10321da177e4SLinus Torvalds 10331da177e4SLinus Torvalds if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN) 10341da177e4SLinus Torvalds return -EINVAL; 10351da177e4SLinus Torvalds 10361da177e4SLinus Torvalds memset(&r, 0, sizeof(r)); 10371da177e4SLinus Torvalds switch (who) { 10381da177e4SLinus Torvalds case RUSAGE_SELF: 10391da177e4SLinus Torvalds jiffies_to_timeval32(current->utime, &r.ru_utime); 10401da177e4SLinus Torvalds jiffies_to_timeval32(current->stime, &r.ru_stime); 10411da177e4SLinus Torvalds r.ru_minflt = current->min_flt; 10421da177e4SLinus Torvalds r.ru_majflt = current->maj_flt; 10431da177e4SLinus Torvalds break; 10441da177e4SLinus Torvalds case RUSAGE_CHILDREN: 10451da177e4SLinus Torvalds jiffies_to_timeval32(current->signal->cutime, &r.ru_utime); 10461da177e4SLinus Torvalds jiffies_to_timeval32(current->signal->cstime, &r.ru_stime); 10471da177e4SLinus Torvalds r.ru_minflt = current->signal->cmin_flt; 10481da177e4SLinus Torvalds r.ru_majflt = current->signal->cmaj_flt; 10491da177e4SLinus Torvalds break; 10501da177e4SLinus Torvalds } 10511da177e4SLinus Torvalds 10521da177e4SLinus Torvalds return copy_to_user(ru, &r, sizeof(r)) ? -EFAULT : 0; 10531da177e4SLinus Torvalds } 10541da177e4SLinus Torvalds 10551da177e4SLinus Torvalds asmlinkage long 10561da177e4SLinus Torvalds osf_wait4(pid_t pid, int __user *ustatus, int options, 10571da177e4SLinus Torvalds struct rusage32 __user *ur) 10581da177e4SLinus Torvalds { 10591da177e4SLinus Torvalds struct rusage r; 10601da177e4SLinus Torvalds long ret, err; 10611da177e4SLinus Torvalds mm_segment_t old_fs; 10621da177e4SLinus Torvalds 10631da177e4SLinus Torvalds if (!ur) 10641da177e4SLinus Torvalds return sys_wait4(pid, ustatus, options, NULL); 10651da177e4SLinus Torvalds 10661da177e4SLinus Torvalds old_fs = get_fs(); 10671da177e4SLinus Torvalds 10681da177e4SLinus Torvalds set_fs (KERNEL_DS); 10691da177e4SLinus Torvalds ret = sys_wait4(pid, ustatus, options, (struct rusage __user *) &r); 10701da177e4SLinus Torvalds set_fs (old_fs); 10711da177e4SLinus Torvalds 10721da177e4SLinus Torvalds if (!access_ok(VERIFY_WRITE, ur, sizeof(*ur))) 10731da177e4SLinus Torvalds return -EFAULT; 10741da177e4SLinus Torvalds 10751da177e4SLinus Torvalds err = 0; 10761da177e4SLinus Torvalds err |= __put_user(r.ru_utime.tv_sec, &ur->ru_utime.tv_sec); 10771da177e4SLinus Torvalds err |= __put_user(r.ru_utime.tv_usec, &ur->ru_utime.tv_usec); 10781da177e4SLinus Torvalds err |= __put_user(r.ru_stime.tv_sec, &ur->ru_stime.tv_sec); 10791da177e4SLinus Torvalds err |= __put_user(r.ru_stime.tv_usec, &ur->ru_stime.tv_usec); 10801da177e4SLinus Torvalds err |= __put_user(r.ru_maxrss, &ur->ru_maxrss); 10811da177e4SLinus Torvalds err |= __put_user(r.ru_ixrss, &ur->ru_ixrss); 10821da177e4SLinus Torvalds err |= __put_user(r.ru_idrss, &ur->ru_idrss); 10831da177e4SLinus Torvalds err |= __put_user(r.ru_isrss, &ur->ru_isrss); 10841da177e4SLinus Torvalds err |= __put_user(r.ru_minflt, &ur->ru_minflt); 10851da177e4SLinus Torvalds err |= __put_user(r.ru_majflt, &ur->ru_majflt); 10861da177e4SLinus Torvalds err |= __put_user(r.ru_nswap, &ur->ru_nswap); 10871da177e4SLinus Torvalds err |= __put_user(r.ru_inblock, &ur->ru_inblock); 10881da177e4SLinus Torvalds err |= __put_user(r.ru_oublock, &ur->ru_oublock); 10891da177e4SLinus Torvalds err |= __put_user(r.ru_msgsnd, &ur->ru_msgsnd); 10901da177e4SLinus Torvalds err |= __put_user(r.ru_msgrcv, &ur->ru_msgrcv); 10911da177e4SLinus Torvalds err |= __put_user(r.ru_nsignals, &ur->ru_nsignals); 10921da177e4SLinus Torvalds err |= __put_user(r.ru_nvcsw, &ur->ru_nvcsw); 10931da177e4SLinus Torvalds err |= __put_user(r.ru_nivcsw, &ur->ru_nivcsw); 10941da177e4SLinus Torvalds 10951da177e4SLinus Torvalds return err ? err : ret; 10961da177e4SLinus Torvalds } 10971da177e4SLinus Torvalds 10981da177e4SLinus Torvalds /* 10991da177e4SLinus Torvalds * I don't know what the parameters are: the first one 11001da177e4SLinus Torvalds * seems to be a timeval pointer, and I suspect the second 11011da177e4SLinus Torvalds * one is the time remaining.. Ho humm.. No documentation. 11021da177e4SLinus Torvalds */ 11031da177e4SLinus Torvalds asmlinkage int 11041da177e4SLinus Torvalds osf_usleep_thread(struct timeval32 __user *sleep, struct timeval32 __user *remain) 11051da177e4SLinus Torvalds { 11061da177e4SLinus Torvalds struct timeval tmp; 11071da177e4SLinus Torvalds unsigned long ticks; 11081da177e4SLinus Torvalds 11091da177e4SLinus Torvalds if (get_tv32(&tmp, sleep)) 11101da177e4SLinus Torvalds goto fault; 11111da177e4SLinus Torvalds 111224d568edSNishanth Aravamudan ticks = timeval_to_jiffies(&tmp); 11131da177e4SLinus Torvalds 111420c6abd1SNishanth Aravamudan ticks = schedule_timeout_interruptible(ticks); 11151da177e4SLinus Torvalds 11161da177e4SLinus Torvalds if (remain) { 111724d568edSNishanth Aravamudan jiffies_to_timeval(ticks, &tmp); 11181da177e4SLinus Torvalds if (put_tv32(remain, &tmp)) 11191da177e4SLinus Torvalds goto fault; 11201da177e4SLinus Torvalds } 11211da177e4SLinus Torvalds 11221da177e4SLinus Torvalds return 0; 11231da177e4SLinus Torvalds fault: 11241da177e4SLinus Torvalds return -EFAULT; 11251da177e4SLinus Torvalds } 11261da177e4SLinus Torvalds 11271da177e4SLinus Torvalds 11281da177e4SLinus Torvalds struct timex32 { 11291da177e4SLinus Torvalds unsigned int modes; /* mode selector */ 11301da177e4SLinus Torvalds long offset; /* time offset (usec) */ 11311da177e4SLinus Torvalds long freq; /* frequency offset (scaled ppm) */ 11321da177e4SLinus Torvalds long maxerror; /* maximum error (usec) */ 11331da177e4SLinus Torvalds long esterror; /* estimated error (usec) */ 11341da177e4SLinus Torvalds int status; /* clock command/status */ 11351da177e4SLinus Torvalds long constant; /* pll time constant */ 11361da177e4SLinus Torvalds long precision; /* clock precision (usec) (read only) */ 11371da177e4SLinus Torvalds long tolerance; /* clock frequency tolerance (ppm) 11381da177e4SLinus Torvalds * (read only) 11391da177e4SLinus Torvalds */ 11401da177e4SLinus Torvalds struct timeval32 time; /* (read only) */ 11411da177e4SLinus Torvalds long tick; /* (modified) usecs between clock ticks */ 11421da177e4SLinus Torvalds 11431da177e4SLinus Torvalds long ppsfreq; /* pps frequency (scaled ppm) (ro) */ 11441da177e4SLinus Torvalds long jitter; /* pps jitter (us) (ro) */ 11451da177e4SLinus Torvalds int shift; /* interval duration (s) (shift) (ro) */ 11461da177e4SLinus Torvalds long stabil; /* pps stability (scaled ppm) (ro) */ 11471da177e4SLinus Torvalds long jitcnt; /* jitter limit exceeded (ro) */ 11481da177e4SLinus Torvalds long calcnt; /* calibration intervals (ro) */ 11491da177e4SLinus Torvalds long errcnt; /* calibration errors (ro) */ 11501da177e4SLinus Torvalds long stbcnt; /* stability limit exceeded (ro) */ 11511da177e4SLinus Torvalds 11521da177e4SLinus Torvalds int :32; int :32; int :32; int :32; 11531da177e4SLinus Torvalds int :32; int :32; int :32; int :32; 11541da177e4SLinus Torvalds int :32; int :32; int :32; int :32; 11551da177e4SLinus Torvalds }; 11561da177e4SLinus Torvalds 11571da177e4SLinus Torvalds asmlinkage int 11581da177e4SLinus Torvalds sys_old_adjtimex(struct timex32 __user *txc_p) 11591da177e4SLinus Torvalds { 11601da177e4SLinus Torvalds struct timex txc; 11611da177e4SLinus Torvalds int ret; 11621da177e4SLinus Torvalds 11631da177e4SLinus Torvalds /* copy relevant bits of struct timex. */ 11641da177e4SLinus Torvalds if (copy_from_user(&txc, txc_p, offsetof(struct timex32, time)) || 11651da177e4SLinus Torvalds copy_from_user(&txc.tick, &txc_p->tick, sizeof(struct timex32) - 11661da177e4SLinus Torvalds offsetof(struct timex32, time))) 11671da177e4SLinus Torvalds return -EFAULT; 11681da177e4SLinus Torvalds 11691da177e4SLinus Torvalds ret = do_adjtimex(&txc); 11701da177e4SLinus Torvalds if (ret < 0) 11711da177e4SLinus Torvalds return ret; 11721da177e4SLinus Torvalds 11731da177e4SLinus Torvalds /* copy back to timex32 */ 11741da177e4SLinus Torvalds if (copy_to_user(txc_p, &txc, offsetof(struct timex32, time)) || 11751da177e4SLinus Torvalds (copy_to_user(&txc_p->tick, &txc.tick, sizeof(struct timex32) - 11761da177e4SLinus Torvalds offsetof(struct timex32, tick))) || 11771da177e4SLinus Torvalds (put_tv32(&txc_p->time, &txc.time))) 11781da177e4SLinus Torvalds return -EFAULT; 11791da177e4SLinus Torvalds 11801da177e4SLinus Torvalds return ret; 11811da177e4SLinus Torvalds } 11821da177e4SLinus Torvalds 11831da177e4SLinus Torvalds /* Get an address range which is currently unmapped. Similar to the 11841da177e4SLinus Torvalds generic version except that we know how to honor ADDR_LIMIT_32BIT. */ 11851da177e4SLinus Torvalds 11861da177e4SLinus Torvalds static unsigned long 11871da177e4SLinus Torvalds arch_get_unmapped_area_1(unsigned long addr, unsigned long len, 11881da177e4SLinus Torvalds unsigned long limit) 11891da177e4SLinus Torvalds { 11901da177e4SLinus Torvalds struct vm_area_struct *vma = find_vma(current->mm, addr); 11911da177e4SLinus Torvalds 11921da177e4SLinus Torvalds while (1) { 11931da177e4SLinus Torvalds /* At this point: (!vma || addr < vma->vm_end). */ 11941da177e4SLinus Torvalds if (limit - len < addr) 11951da177e4SLinus Torvalds return -ENOMEM; 11961da177e4SLinus Torvalds if (!vma || addr + len <= vma->vm_start) 11971da177e4SLinus Torvalds return addr; 11981da177e4SLinus Torvalds addr = vma->vm_end; 11991da177e4SLinus Torvalds vma = vma->vm_next; 12001da177e4SLinus Torvalds } 12011da177e4SLinus Torvalds } 12021da177e4SLinus Torvalds 12031da177e4SLinus Torvalds unsigned long 12041da177e4SLinus Torvalds arch_get_unmapped_area(struct file *filp, unsigned long addr, 12051da177e4SLinus Torvalds unsigned long len, unsigned long pgoff, 12061da177e4SLinus Torvalds unsigned long flags) 12071da177e4SLinus Torvalds { 12081da177e4SLinus Torvalds unsigned long limit; 12091da177e4SLinus Torvalds 12101da177e4SLinus Torvalds /* "32 bit" actually means 31 bit, since pointers sign extend. */ 12111da177e4SLinus Torvalds if (current->personality & ADDR_LIMIT_32BIT) 12121da177e4SLinus Torvalds limit = 0x80000000; 12131da177e4SLinus Torvalds else 12141da177e4SLinus Torvalds limit = TASK_SIZE; 12151da177e4SLinus Torvalds 12161da177e4SLinus Torvalds if (len > limit) 12171da177e4SLinus Torvalds return -ENOMEM; 12181da177e4SLinus Torvalds 12194b87b3b2SBenjamin Herrenschmidt if (flags & MAP_FIXED) 12204b87b3b2SBenjamin Herrenschmidt return addr; 12214b87b3b2SBenjamin Herrenschmidt 12221da177e4SLinus Torvalds /* First, see if the given suggestion fits. 12231da177e4SLinus Torvalds 12241da177e4SLinus Torvalds The OSF/1 loader (/sbin/loader) relies on us returning an 12251da177e4SLinus Torvalds address larger than the requested if one exists, which is 12261da177e4SLinus Torvalds a terribly broken way to program. 12271da177e4SLinus Torvalds 12281da177e4SLinus Torvalds That said, I can see the use in being able to suggest not 12291da177e4SLinus Torvalds merely specific addresses, but regions of memory -- perhaps 12301da177e4SLinus Torvalds this feature should be incorporated into all ports? */ 12311da177e4SLinus Torvalds 12321da177e4SLinus Torvalds if (addr) { 12331da177e4SLinus Torvalds addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit); 12341da177e4SLinus Torvalds if (addr != (unsigned long) -ENOMEM) 12351da177e4SLinus Torvalds return addr; 12361da177e4SLinus Torvalds } 12371da177e4SLinus Torvalds 12381da177e4SLinus Torvalds /* Next, try allocating at TASK_UNMAPPED_BASE. */ 12391da177e4SLinus Torvalds addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE), 12401da177e4SLinus Torvalds len, limit); 12411da177e4SLinus Torvalds if (addr != (unsigned long) -ENOMEM) 12421da177e4SLinus Torvalds return addr; 12431da177e4SLinus Torvalds 12441da177e4SLinus Torvalds /* Finally, try allocating in low memory. */ 12451da177e4SLinus Torvalds addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit); 12461da177e4SLinus Torvalds 12471da177e4SLinus Torvalds return addr; 12481da177e4SLinus Torvalds } 12491da177e4SLinus Torvalds 12501da177e4SLinus Torvalds #ifdef CONFIG_OSF4_COMPAT 12511da177e4SLinus Torvalds 12521da177e4SLinus Torvalds /* Clear top 32 bits of iov_len in the user's buffer for 12531da177e4SLinus Torvalds compatibility with old versions of OSF/1 where iov_len 12541da177e4SLinus Torvalds was defined as int. */ 12551da177e4SLinus Torvalds static int 12561da177e4SLinus Torvalds osf_fix_iov_len(const struct iovec __user *iov, unsigned long count) 12571da177e4SLinus Torvalds { 12581da177e4SLinus Torvalds unsigned long i; 12591da177e4SLinus Torvalds 12601da177e4SLinus Torvalds for (i = 0 ; i < count ; i++) { 12611da177e4SLinus Torvalds int __user *iov_len_high = (int __user *)&iov[i].iov_len + 1; 12621da177e4SLinus Torvalds 12631da177e4SLinus Torvalds if (put_user(0, iov_len_high)) 12641da177e4SLinus Torvalds return -EFAULT; 12651da177e4SLinus Torvalds } 12661da177e4SLinus Torvalds return 0; 12671da177e4SLinus Torvalds } 12681da177e4SLinus Torvalds 12691da177e4SLinus Torvalds asmlinkage ssize_t 12701da177e4SLinus Torvalds osf_readv(unsigned long fd, const struct iovec __user * vector, unsigned long count) 12711da177e4SLinus Torvalds { 12721da177e4SLinus Torvalds if (unlikely(personality(current->personality) == PER_OSF4)) 12731da177e4SLinus Torvalds if (osf_fix_iov_len(vector, count)) 12741da177e4SLinus Torvalds return -EFAULT; 12751da177e4SLinus Torvalds return sys_readv(fd, vector, count); 12761da177e4SLinus Torvalds } 12771da177e4SLinus Torvalds 12781da177e4SLinus Torvalds asmlinkage ssize_t 12791da177e4SLinus Torvalds osf_writev(unsigned long fd, const struct iovec __user * vector, unsigned long count) 12801da177e4SLinus Torvalds { 12811da177e4SLinus Torvalds if (unlikely(personality(current->personality) == PER_OSF4)) 12821da177e4SLinus Torvalds if (osf_fix_iov_len(vector, count)) 12831da177e4SLinus Torvalds return -EFAULT; 12841da177e4SLinus Torvalds return sys_writev(fd, vector, count); 12851da177e4SLinus Torvalds } 12861da177e4SLinus Torvalds 12871da177e4SLinus Torvalds #endif 1288