sys_ia32.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:63k
- /*
- * sys_ia32.c: Conversion between 32bit and 64bit native syscalls. Based on
- * sys_sparc32
- *
- * Copyright (C) 2000 VA Linux Co
- * Copyright (C) 2000 Don Dugger <n0ano@valinux.com>
- * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>
- * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
- * Copyright (C) 2000 Hewlett-Packard Co.
- * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com>
- * Copyright (C) 2000,2001 Andi Kleen, SuSE Labs (x86-64 port)
- *
- * These routines maintain argument size conversion between 32bit and 64bit
- * environment. In 2.5 most of this should be moved to a generic directory.
- *
- * This file assumes that there is a hole at the end of user address space.
- * $Id: sys_ia32.c,v 1.42 2002/09/17 15:23:41 ak Exp $
- */
- #include <linux/config.h>
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <linux/fs.h>
- #include <linux/file.h>
- #include <linux/signal.h>
- #include <linux/utime.h>
- #include <linux/resource.h>
- #include <linux/times.h>
- #include <linux/utsname.h>
- #include <linux/timex.h>
- #include <linux/smp.h>
- #include <linux/smp_lock.h>
- #include <linux/sem.h>
- #include <linux/msg.h>
- #include <linux/mm.h>
- #include <linux/shm.h>
- #include <linux/slab.h>
- #include <linux/uio.h>
- #include <linux/nfs_fs.h>
- #include <linux/smb_fs.h>
- #include <linux/smb_mount.h>
- #include <linux/ncp_fs.h>
- #include <linux/quota.h>
- #include <linux/module.h>
- #include <linux/sunrpc/svc.h>
- #include <linux/nfsd/nfsd.h>
- #include <linux/nfsd/cache.h>
- #include <linux/nfsd/xdr.h>
- #include <linux/nfsd/syscall.h>
- #include <linux/poll.h>
- #include <linux/personality.h>
- #include <linux/stat.h>
- #include <linux/ipc.h>
- #include <linux/rwsem.h>
- #include <linux/binfmts.h>
- #include <linux/init.h>
- #include <asm/mman.h>
- #include <asm/types.h>
- #include <asm/uaccess.h>
- #include <asm/semaphore.h>
- #include <asm/ipc.h>
- #include <asm/atomic.h>
- #include <net/scm.h>
- #include <net/sock.h>
- #include <asm/ia32.h>
- #define A(__x) ((unsigned long)(__x))
- #define AA(__x) ((unsigned long)(__x))
- #define ROUND_UP(x,a) ((__typeof__(x))(((unsigned long)(x) + ((a) - 1)) & ~((a) - 1)))
- #define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de)))
- #undef high2lowuid
- #undef high2lowgid
- #undef low2highuid
- #undef low2highgid
- #define high2lowuid(uid) ((uid) > 65535) ? (u16)overflowuid : (u16)(uid)
- #define high2lowgid(gid) ((gid) > 65535) ? (u16)overflowgid : (u16)(gid)
- #define low2highuid(uid) ((uid) == (u16)-1) ? (uid_t)-1 : (uid_t)(uid)
- #define low2highgid(gid) ((gid) == (u16)-1) ? (gid_t)-1 : (gid_t)(gid)
- extern int overflowuid,overflowgid;
- static int
- putstat(struct stat32 *ubuf, struct stat *kbuf)
- {
- if (verify_area(VERIFY_WRITE, ubuf, sizeof(struct stat32)) ||
- __put_user (kbuf->st_dev, &ubuf->st_dev) ||
- __put_user (kbuf->st_ino, &ubuf->st_ino) ||
- __put_user (kbuf->st_mode, &ubuf->st_mode) ||
- __put_user (kbuf->st_nlink, &ubuf->st_nlink) ||
- __put_user (kbuf->st_uid, &ubuf->st_uid) ||
- __put_user (kbuf->st_gid, &ubuf->st_gid) ||
- __put_user (kbuf->st_rdev, &ubuf->st_rdev) ||
- __put_user (kbuf->st_size, &ubuf->st_size) ||
- __put_user (kbuf->st_atime, &ubuf->st_atime) ||
- __put_user (kbuf->st_mtime, &ubuf->st_mtime) ||
- __put_user (kbuf->st_ctime, &ubuf->st_ctime) ||
- __put_user (kbuf->st_blksize, &ubuf->st_blksize) ||
- __put_user (kbuf->st_blocks, &ubuf->st_blocks))
- return -EFAULT;
- return 0;
- }
- extern asmlinkage long sys_newstat(char * filename, struct stat * statbuf);
- asmlinkage long
- sys32_newstat(char * filename, struct stat32 *statbuf)
- {
- int ret;
- struct stat s;
- mm_segment_t old_fs = get_fs();
-
- set_fs (KERNEL_DS);
- ret = sys_newstat(filename, &s);
- set_fs (old_fs);
- if (putstat (statbuf, &s))
- return -EFAULT;
- return ret;
- }
- extern asmlinkage long sys_newlstat(char * filename, struct stat * statbuf);
- asmlinkage long
- sys32_newlstat(char * filename, struct stat32 *statbuf)
- {
- int ret;
- struct stat s;
- mm_segment_t old_fs = get_fs();
-
- set_fs (KERNEL_DS);
- ret = sys_newlstat(filename, &s);
- set_fs (old_fs);
- if (putstat (statbuf, &s))
- return -EFAULT;
- return ret;
- }
- extern asmlinkage long sys_newfstat(unsigned int fd, struct stat * statbuf);
- asmlinkage long
- sys32_newfstat(unsigned int fd, struct stat32 *statbuf)
- {
- int ret;
- struct stat s;
- mm_segment_t old_fs = get_fs();
-
- set_fs (KERNEL_DS);
- ret = sys_newfstat(fd, &s);
- set_fs (old_fs);
- if (putstat (statbuf, &s))
- return -EFAULT;
- return ret;
- }
- /* Another set for IA32/LFS -- x86_64 struct stat is different due to
- support for 64bit inode numbers. */
- static int
- putstat64(struct stat64 *ubuf, struct stat *kbuf)
- {
- if (verify_area(VERIFY_WRITE, ubuf, sizeof(struct stat64)) ||
- __put_user (kbuf->st_dev, &ubuf->st_dev) ||
- __put_user (kbuf->st_ino, &ubuf->__st_ino) ||
- __put_user (kbuf->st_ino, &ubuf->st_ino) ||
- __put_user (kbuf->st_mode, &ubuf->st_mode) ||
- __put_user (kbuf->st_nlink, &ubuf->st_nlink) ||
- __put_user (kbuf->st_uid, &ubuf->st_uid) ||
- __put_user (kbuf->st_gid, &ubuf->st_gid) ||
- __put_user (kbuf->st_rdev, &ubuf->st_rdev) ||
- __put_user (kbuf->st_size, &ubuf->st_size) ||
- __put_user (kbuf->st_atime, &ubuf->st_atime) ||
- __put_user (kbuf->st_mtime, &ubuf->st_mtime) ||
- __put_user (kbuf->st_ctime, &ubuf->st_ctime) ||
- __put_user (kbuf->st_blksize, &ubuf->st_blksize) ||
- __put_user (kbuf->st_blocks, &ubuf->st_blocks))
- return -EFAULT;
- return 0;
- }
- asmlinkage long
- sys32_stat64(char * filename, struct stat64 *statbuf)
- {
- int ret;
- struct stat s;
- mm_segment_t old_fs = get_fs();
-
- set_fs (KERNEL_DS);
- ret = sys_newstat(filename, &s);
- set_fs (old_fs);
- if (putstat64 (statbuf, &s))
- return -EFAULT;
- return ret;
- }
- asmlinkage long
- sys32_lstat64(char * filename, struct stat64 *statbuf)
- {
- int ret;
- struct stat s;
- mm_segment_t old_fs = get_fs();
-
- set_fs (KERNEL_DS);
- ret = sys_newlstat(filename, &s);
- set_fs (old_fs);
- if (putstat64 (statbuf, &s))
- return -EFAULT;
- return ret;
- }
- asmlinkage long
- sys32_fstat64(unsigned int fd, struct stat64 *statbuf)
- {
- int ret;
- struct stat s;
- mm_segment_t old_fs = get_fs();
-
- set_fs (KERNEL_DS);
- ret = sys_newfstat(fd, &s);
- set_fs (old_fs);
- if (putstat64 (statbuf, &s))
- return -EFAULT;
- return ret;
- }
- /*
- * Linux/i386 didn't use to be able to handle more than
- * 4 system call parameters, so these system calls used a memory
- * block for parameter passing..
- */
- struct mmap_arg_struct {
- unsigned int addr;
- unsigned int len;
- unsigned int prot;
- unsigned int flags;
- unsigned int fd;
- unsigned int offset;
- };
- asmlinkage __u32
- sys32_mmap(struct mmap_arg_struct *arg)
- {
- struct mmap_arg_struct a;
- struct file *file = NULL;
- unsigned long retval;
- struct mm_struct *mm ;
- if (copy_from_user(&a, arg, sizeof(a)))
- return -EFAULT;
- if (a.offset & ~PAGE_MASK)
- return -EINVAL;
- if (!(a.flags & MAP_ANONYMOUS)) {
- file = fget(a.fd);
- if (!file)
- return -EBADF;
- }
- if (a.prot & PROT_READ)
- a.prot |= PROT_EXEC;
- a.flags |= MAP_32BIT;
- mm = current->mm;
- down_write(&mm->mmap_sem);
- retval = do_mmap_pgoff(file, a.addr, a.len, a.prot, a.flags, a.offset>>PAGE_SHIFT);
- if (file)
- fput(file);
- /* Should not happen */
- if (retval >= 0xFFFFFFFF && (long)retval > 0) {
- do_munmap(mm, retval, a.len);
- retval = -ENOMEM;
- }
- up_write(&mm->mmap_sem);
- return retval;
- }
- extern asmlinkage long sys_mprotect(unsigned long start,size_t len,unsigned long prot);
- asmlinkage int sys32_mprotect(unsigned long start, size_t len, unsigned long prot)
- {
- if (prot & PROT_READ)
- prot |= PROT_EXEC;
- return sys_mprotect(start,len,prot);
- }
- asmlinkage long
- sys32_pipe(int *fd)
- {
- int retval;
- int fds[2];
- retval = do_pipe(fds);
- if (retval)
- goto out;
- if (copy_to_user(fd, fds, sizeof(fds)))
- retval = -EFAULT;
- out:
- return retval;
- }
- asmlinkage long
- sys32_rt_sigaction(int sig, struct sigaction32 *act,
- struct sigaction32 *oact, unsigned int sigsetsize)
- {
- struct k_sigaction new_ka, old_ka;
- int ret;
- sigset32_t set32;
- /* XXX: Don't preclude handling different sized sigset_t's. */
- if (sigsetsize != sizeof(sigset32_t))
- return -EINVAL;
- if (act) {
- if (verify_area(VERIFY_READ, act, sizeof(*act)) ||
- __get_user((long)new_ka.sa.sa_handler, &act->sa_handler) ||
- __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
- __get_user((long)new_ka.sa.sa_restorer, &act->sa_restorer)||
- __copy_from_user(&set32, &act->sa_mask, sizeof(sigset32_t)))
- return -EFAULT;
- /* FIXME: here we rely on _IA32_NSIG_WORS to be >= than _NSIG_WORDS << 1 */
- switch (_NSIG_WORDS) {
- case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6]
- | (((long)set32.sig[7]) << 32);
- case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4]
- | (((long)set32.sig[5]) << 32);
- case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2]
- | (((long)set32.sig[3]) << 32);
- case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0]
- | (((long)set32.sig[1]) << 32);
- }
- }
- ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
- if (!ret && oact) {
- /* FIXME: here we rely on _IA32_NSIG_WORS to be >= than _NSIG_WORDS << 1 */
- switch (_NSIG_WORDS) {
- case 4:
- set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32);
- set32.sig[6] = old_ka.sa.sa_mask.sig[3];
- case 3:
- set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32);
- set32.sig[4] = old_ka.sa.sa_mask.sig[2];
- case 2:
- set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32);
- set32.sig[2] = old_ka.sa.sa_mask.sig[1];
- case 1:
- set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32);
- set32.sig[0] = old_ka.sa.sa_mask.sig[0];
- }
- if (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) ||
- __put_user((long)old_ka.sa.sa_handler, &oact->sa_handler) ||
- __put_user((long)old_ka.sa.sa_restorer, &oact->sa_restorer) ||
- __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
- __copy_to_user(&oact->sa_mask, &set32, sizeof(sigset32_t)))
- return -EFAULT;
- }
- return ret;
- }
- asmlinkage long
- sys32_sigaction (int sig, struct old_sigaction32 *act, struct old_sigaction32 *oact)
- {
- struct k_sigaction new_ka, old_ka;
- int ret;
- if (act) {
- old_sigset32_t mask;
- if (verify_area(VERIFY_READ, act, sizeof(*act)) ||
- __get_user((long)new_ka.sa.sa_handler, &act->sa_handler) ||
- __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
- __get_user((long)new_ka.sa.sa_restorer, &act->sa_restorer) ||
- __get_user(mask, &act->sa_mask))
- return -EFAULT;
- siginitset(&new_ka.sa.sa_mask, mask);
- }
- ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
- if (!ret && oact) {
- if (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) ||
- __put_user((long)old_ka.sa.sa_handler, &oact->sa_handler) ||
- __put_user((long)old_ka.sa.sa_restorer, &oact->sa_restorer) ||
- __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
- __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
- return -EFAULT;
- }
- return ret;
- }
- extern asmlinkage long sys_rt_sigprocmask(int how, sigset_t *set, sigset_t *oset,
- size_t sigsetsize);
- asmlinkage long
- sys32_rt_sigprocmask(int how, sigset32_t *set, sigset32_t *oset,
- unsigned int sigsetsize)
- {
- sigset_t s;
- sigset32_t s32;
- int ret;
- mm_segment_t old_fs = get_fs();
-
- if (set) {
- if (copy_from_user (&s32, set, sizeof(sigset32_t)))
- return -EFAULT;
- switch (_NSIG_WORDS) {
- case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
- case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
- case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
- case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
- }
- }
- set_fs (KERNEL_DS);
- ret = sys_rt_sigprocmask(how, set ? &s : NULL, oset ? &s : NULL,
- sigsetsize);
- set_fs (old_fs);
- if (ret) return ret;
- if (oset) {
- switch (_NSIG_WORDS) {
- case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
- case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
- case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
- case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
- }
- if (copy_to_user (oset, &s32, sizeof(sigset32_t)))
- return -EFAULT;
- }
- return 0;
- }
- static int
- put_statfs (struct statfs32 *ubuf, struct statfs *kbuf)
- {
- if (verify_area(VERIFY_WRITE, ubuf, sizeof(struct statfs32)) ||
- __put_user (kbuf->f_type, &ubuf->f_type) ||
- __put_user (kbuf->f_bsize, &ubuf->f_bsize) ||
- __put_user (kbuf->f_blocks, &ubuf->f_blocks) ||
- __put_user (kbuf->f_bfree, &ubuf->f_bfree) ||
- __put_user (kbuf->f_bavail, &ubuf->f_bavail) ||
- __put_user (kbuf->f_files, &ubuf->f_files) ||
- __put_user (kbuf->f_ffree, &ubuf->f_ffree) ||
- __put_user (kbuf->f_namelen, &ubuf->f_namelen) ||
- __put_user (kbuf->f_fsid.val[0], &ubuf->f_fsid.val[0]) ||
- __put_user (kbuf->f_fsid.val[1], &ubuf->f_fsid.val[1]))
- return -EFAULT;
- return 0;
- }
- extern asmlinkage long sys_statfs(const char * path, struct statfs * buf);
- asmlinkage long
- sys32_statfs(const char * path, struct statfs32 *buf)
- {
- int ret;
- struct statfs s;
- mm_segment_t old_fs = get_fs();
-
- set_fs (KERNEL_DS);
- ret = sys_statfs((const char *)path, &s);
- set_fs (old_fs);
- if (put_statfs(buf, &s))
- return -EFAULT;
- return ret;
- }
- extern asmlinkage long sys_fstatfs(unsigned int fd, struct statfs * buf);
- asmlinkage long
- sys32_fstatfs(unsigned int fd, struct statfs32 *buf)
- {
- int ret;
- struct statfs s;
- mm_segment_t old_fs = get_fs();
-
- set_fs (KERNEL_DS);
- ret = sys_fstatfs(fd, &s);
- set_fs (old_fs);
- if (put_statfs(buf, &s))
- return -EFAULT;
- return ret;
- }
- struct timeval32
- {
- int tv_sec, tv_usec;
- };
- struct itimerval32
- {
- struct timeval32 it_interval;
- struct timeval32 it_value;
- };
- static inline long
- get_tv32(struct timeval *o, struct timeval32 *i)
- {
- int err = -EFAULT;
- if (access_ok(VERIFY_READ, i, sizeof(*i))) {
- err = __get_user(o->tv_sec, &i->tv_sec);
- err |= __get_user(o->tv_usec, &i->tv_usec);
- }
- return err;
- }
- static inline long
- put_tv32(struct timeval32 *o, struct timeval *i)
- {
- int err = -EFAULT;
- if (access_ok(VERIFY_WRITE, o, sizeof(*o))) {
- err = __put_user(i->tv_sec, &o->tv_sec);
- err |= __put_user(i->tv_usec, &o->tv_usec);
- }
- return err;
- }
- static inline long
- get_it32(struct itimerval *o, struct itimerval32 *i)
- {
- int err = -EFAULT;
- if (access_ok(VERIFY_READ, i, sizeof(*i))) {
- err = __get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec);
- err |= __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec);
- err |= __get_user(o->it_value.tv_sec, &i->it_value.tv_sec);
- err |= __get_user(o->it_value.tv_usec, &i->it_value.tv_usec);
- }
- return err;
- }
- static inline long
- put_it32(struct itimerval32 *o, struct itimerval *i)
- {
- int err = -EFAULT;
- if (access_ok(VERIFY_WRITE, o, sizeof(*o))) {
- err = __put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec);
- err |= __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec);
- err |= __put_user(i->it_value.tv_sec, &o->it_value.tv_sec);
- err |= __put_user(i->it_value.tv_usec, &o->it_value.tv_usec);
- }
- return err;
- }
- extern int do_getitimer(int which, struct itimerval *value);
- asmlinkage long
- sys32_getitimer(int which, struct itimerval32 *it)
- {
- struct itimerval kit;
- int error;
- error = do_getitimer(which, &kit);
- if (!error && put_it32(it, &kit))
- error = -EFAULT;
- return error;
- }
- extern int do_setitimer(int which, struct itimerval *, struct itimerval *);
- asmlinkage long
- sys32_setitimer(int which, struct itimerval32 *in, struct itimerval32 *out)
- {
- struct itimerval kin, kout;
- int error;
- if (in) {
- if (get_it32(&kin, in))
- return -EFAULT;
- } else
- memset(&kin, 0, sizeof(kin));
- error = do_setitimer(which, &kin, out ? &kout : NULL);
- if (error || !out)
- return error;
- if (put_it32(out, &kout))
- return -EFAULT;
- return 0;
- }
- asmlinkage unsigned long
- sys32_alarm(unsigned int seconds)
- {
- struct itimerval it_new, it_old;
- unsigned int oldalarm;
- it_new.it_interval.tv_sec = it_new.it_interval.tv_usec = 0;
- it_new.it_value.tv_sec = seconds;
- it_new.it_value.tv_usec = 0;
- do_setitimer(ITIMER_REAL, &it_new, &it_old);
- oldalarm = it_old.it_value.tv_sec;
- /* ehhh.. We can't return 0 if we have an alarm pending.. */
- /* And we'd better return too much than too little anyway */
- if (it_old.it_value.tv_usec)
- oldalarm++;
- return oldalarm;
- }
- /* Translations due to time_t size differences. Which affects all
- sorts of things, like timeval and itimerval. */
- struct utimbuf_32 {
- int atime;
- int mtime;
- };
- extern asmlinkage long sys_utimes(char * filename, struct timeval * utimes);
- extern asmlinkage long sys_gettimeofday (struct timeval *tv, struct timezone *tz);
- extern struct timezone sys_tz;
- extern int do_sys_settimeofday(struct timeval *tv, struct timezone *tz);
- asmlinkage long
- sys32_gettimeofday(struct timeval32 *tv, struct timezone *tz)
- {
- if (tv) {
- struct timeval ktv;
- do_gettimeofday(&ktv);
- if (put_tv32(tv, &ktv))
- return -EFAULT;
- }
- if (tz) {
- if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
- return -EFAULT;
- }
- return 0;
- }
- asmlinkage long
- sys32_settimeofday(struct timeval32 *tv, struct timezone *tz)
- {
- struct timeval ktv;
- struct timezone ktz;
- if (tv) {
- if (get_tv32(&ktv, tv))
- return -EFAULT;
- }
- if (tz) {
- if (copy_from_user(&ktz, tz, sizeof(ktz)))
- return -EFAULT;
- }
- return do_sys_settimeofday(tv ? &ktv : NULL, tz ? &ktz : NULL);
- }
- struct linux32_dirent {
- u32 d_ino;
- u32 d_off;
- u16 d_reclen;
- char d_name[1];
- };
- struct old_linux32_dirent {
- u32 d_ino;
- u32 d_offset;
- u16 d_namlen;
- char d_name[1];
- };
- struct getdents32_callback {
- struct linux32_dirent * current_dir;
- struct linux32_dirent * previous;
- int count;
- int error;
- };
- struct readdir32_callback {
- struct old_linux32_dirent * dirent;
- int count;
- };
- static int
- filldir32 (void *__buf, const char *name, int namlen, loff_t offset, ino_t ino,
- unsigned int d_type)
- {
- struct linux32_dirent * dirent;
- struct getdents32_callback * buf = (struct getdents32_callback *) __buf;
- int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1, 4);
- buf->error = -EINVAL; /* only used if we fail.. */
- if (reclen > buf->count)
- return -EINVAL;
- dirent = buf->previous;
- if (dirent)
- put_user(offset, &dirent->d_off);
- dirent = buf->current_dir;
- buf->previous = dirent;
- put_user(ino, &dirent->d_ino);
- put_user(reclen, &dirent->d_reclen);
- copy_to_user(dirent->d_name, name, namlen);
- put_user(0, dirent->d_name + namlen);
- ((char *) dirent) += reclen;
- buf->current_dir = dirent;
- buf->count -= reclen;
- return 0;
- }
- asmlinkage long
- sys32_getdents (unsigned int fd, void * dirent, unsigned int count)
- {
- struct file * file;
- struct linux32_dirent * lastdirent;
- struct getdents32_callback buf;
- int error;
- error = -EBADF;
- file = fget(fd);
- if (!file)
- goto out;
- buf.current_dir = (struct linux32_dirent *) dirent;
- buf.previous = NULL;
- buf.count = count;
- buf.error = 0;
- error = vfs_readdir(file, filldir32, &buf);
- if (error < 0)
- goto out_putf;
- error = buf.error;
- lastdirent = buf.previous;
- if (lastdirent) {
- put_user(file->f_pos, &lastdirent->d_off);
- error = count - buf.count;
- }
- out_putf:
- fput(file);
- out:
- return error;
- }
- static int
- fillonedir32 (void * __buf, const char * name, int namlen, loff_t offset, ino_t ino, unsigned d_type)
- {
- struct readdir32_callback * buf = (struct readdir32_callback *) __buf;
- struct old_linux32_dirent * dirent;
- if (buf->count)
- return -EINVAL;
- buf->count++;
- dirent = buf->dirent;
- put_user(ino, &dirent->d_ino);
- put_user(offset, &dirent->d_offset);
- put_user(namlen, &dirent->d_namlen);
- copy_to_user(dirent->d_name, name, namlen);
- put_user(0, dirent->d_name + namlen);
- return 0;
- }
- asmlinkage long
- sys32_oldreaddir (unsigned int fd, void * dirent, unsigned int count)
- {
- int error;
- struct file * file;
- struct readdir32_callback buf;
- error = -EBADF;
- file = fget(fd);
- if (!file)
- goto out;
- buf.count = 0;
- buf.dirent = dirent;
- error = vfs_readdir(file, fillonedir32, &buf);
- if (error >= 0)
- error = buf.count;
- fput(file);
- out:
- return error;
- }
- /*
- * We can actually return ERESTARTSYS instead of EINTR, but I'd
- * like to be certain this leads to no problems. So I return
- * EINTR just for safety.
- *
- * Update: ERESTARTSYS breaks at least the xview clock binary, so
- * I'm trying ERESTARTNOHAND which restart only when you want to.
- */
- #define MAX_SELECT_SECONDS
- ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
- #define ROUND_UP_TIME(x,y) (((x)+(y)-1)/(y))
- asmlinkage long
- sys32_select(int n, fd_set *inp, fd_set *outp, fd_set *exp, struct timeval32 *tvp32)
- {
- fd_set_bits fds;
- char *bits;
- long timeout;
- int ret, size;
- timeout = MAX_SCHEDULE_TIMEOUT;
- if (tvp32) {
- time_t sec, usec;
- get_user(sec, &tvp32->tv_sec);
- get_user(usec, &tvp32->tv_usec);
- ret = -EINVAL;
- if (sec < 0 || usec < 0)
- goto out_nofds;
- if ((unsigned long) sec < MAX_SELECT_SECONDS) {
- timeout = ROUND_UP_TIME(usec, 1000000/HZ);
- timeout += sec * (unsigned long) HZ;
- }
- }
- ret = -EINVAL;
- if (n < 0)
- goto out_nofds;
- if (n > current->files->max_fdset)
- n = current->files->max_fdset;
- /*
- * We need 6 bitmaps (in/out/ex for both incoming and outgoing),
- * since we used fdset we need to allocate memory in units of
- * long-words.
- */
- ret = -ENOMEM;
- size = FDS_BYTES(n);
- bits = kmalloc(6 * size, GFP_KERNEL);
- if (!bits)
- goto out_nofds;
- fds.in = (unsigned long *) bits;
- fds.out = (unsigned long *) (bits + size);
- fds.ex = (unsigned long *) (bits + 2*size);
- fds.res_in = (unsigned long *) (bits + 3*size);
- fds.res_out = (unsigned long *) (bits + 4*size);
- fds.res_ex = (unsigned long *) (bits + 5*size);
- if ((ret = get_fd_set(n, inp, fds.in)) ||
- (ret = get_fd_set(n, outp, fds.out)) ||
- (ret = get_fd_set(n, exp, fds.ex)))
- goto out;
- zero_fd_set(n, fds.res_in);
- zero_fd_set(n, fds.res_out);
- zero_fd_set(n, fds.res_ex);
- ret = do_select(n, &fds, &timeout);
- if (tvp32 && !(current->personality & STICKY_TIMEOUTS)) {
- time_t sec = 0, usec = 0;
- if (timeout) {
- sec = timeout / HZ;
- usec = timeout % HZ;
- usec *= (1000000/HZ);
- }
- put_user(sec, (int *)&tvp32->tv_sec);
- put_user(usec, (int *)&tvp32->tv_usec);
- }
- if (ret < 0)
- goto out;
- if (!ret) {
- ret = -ERESTARTNOHAND;
- if (signal_pending(current))
- goto out;
- ret = 0;
- }
- set_fd_set(n, inp, fds.res_in);
- set_fd_set(n, outp, fds.res_out);
- set_fd_set(n, exp, fds.res_ex);
- out:
- kfree(bits);
- out_nofds:
- return ret;
- }
- struct sel_arg_struct {
- unsigned int n;
- unsigned int inp;
- unsigned int outp;
- unsigned int exp;
- unsigned int tvp;
- };
- asmlinkage long
- sys32_old_select(struct sel_arg_struct *arg)
- {
- struct sel_arg_struct a;
- if (copy_from_user(&a, arg, sizeof(a)))
- return -EFAULT;
- return sys32_select(a.n, (fd_set *)A(a.inp), (fd_set *)A(a.outp), (fd_set *)A(a.exp),
- (struct timeval32 *)A(a.tvp));
- }
- struct timespec32 {
- int tv_sec;
- int tv_nsec;
- };
- extern asmlinkage long sys_nanosleep(struct timespec *rqtp, struct timespec *rmtp);
- asmlinkage long
- sys32_nanosleep(struct timespec32 *rqtp, struct timespec32 *rmtp)
- {
- struct timespec t;
- int ret;
- mm_segment_t old_fs = get_fs ();
-
- if (verify_area(VERIFY_READ, rqtp, sizeof(struct timespec32)) ||
- __get_user (t.tv_sec, &rqtp->tv_sec) ||
- __get_user (t.tv_nsec, &rqtp->tv_nsec))
- return -EFAULT;
- set_fs (KERNEL_DS);
- ret = sys_nanosleep(&t, rmtp ? &t : NULL);
- set_fs (old_fs);
- if (rmtp && ret == -EINTR) {
- if (verify_area(VERIFY_WRITE, rmtp, sizeof(struct timespec32)) ||
- __put_user (t.tv_sec, &rmtp->tv_sec) ||
- __put_user (t.tv_nsec, &rmtp->tv_nsec))
- return -EFAULT;
- }
- return ret;
- }
- asmlinkage ssize_t sys_readv(unsigned long,const struct iovec *,unsigned long);
- asmlinkage ssize_t sys_writev(unsigned long,const struct iovec *,unsigned long);
- struct iovec *
- get_iovec32(struct iovec32 *iov32, struct iovec *iov_buf, u32 count, int type)
- {
- int i;
- u32 buf, len;
- struct iovec *ivp, *iov;
- /* Get the "struct iovec" from user memory */
- if (!count)
- return 0;
- if(verify_area(VERIFY_READ, iov32, sizeof(struct iovec32)*count))
- return(struct iovec *)0;
- if (count > UIO_MAXIOV)
- return(struct iovec *)0;
- if (count > UIO_FASTIOV) {
- iov = kmalloc(count*sizeof(struct iovec), GFP_KERNEL);
- if (!iov)
- return((struct iovec *)0);
- } else
- iov = iov_buf;
- ivp = iov;
- for (i = 0; i < count; i++) {
- if (__get_user(len, &iov32->iov_len) ||
- __get_user(buf, &iov32->iov_base)) {
- if (iov != iov_buf)
- kfree(iov);
- return((struct iovec *)0);
- }
- if (verify_area(type, (void *)A(buf), len)) {
- if (iov != iov_buf)
- kfree(iov);
- return((struct iovec *)0);
- }
- ivp->iov_base = (void *)A(buf);
- ivp->iov_len = (__kernel_size_t)len;
- iov32++;
- ivp++;
- }
- return(iov);
- }
- asmlinkage long
- sys32_readv(int fd, struct iovec32 *vector, u32 count)
- {
- struct iovec iovstack[UIO_FASTIOV];
- struct iovec *iov;
- int ret;
- mm_segment_t old_fs = get_fs();
- if ((iov = get_iovec32(vector, iovstack, count, VERIFY_WRITE)) == (struct iovec *)0)
- return -EFAULT;
- set_fs(KERNEL_DS);
- ret = sys_readv(fd, iov, count);
- set_fs(old_fs);
- if (iov != iovstack)
- kfree(iov);
- return ret;
- }
- asmlinkage long
- sys32_writev(int fd, struct iovec32 *vector, u32 count)
- {
- struct iovec iovstack[UIO_FASTIOV];
- struct iovec *iov;
- int ret;
- mm_segment_t old_fs = get_fs();
- if ((iov = get_iovec32(vector, iovstack, count, VERIFY_READ)) == (struct iovec *)0)
- return -EFAULT;
- set_fs(KERNEL_DS);
- ret = sys_writev(fd, iov, count);
- set_fs(old_fs);
- if (iov != iovstack)
- kfree(iov);
- return ret;
- }
- #define RLIM_INFINITY32 0xffffffff
- #define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)
- struct rlimit32 {
- int rlim_cur;
- int rlim_max;
- };
- extern asmlinkage long sys_getrlimit(unsigned int resource, struct rlimit *rlim);
- asmlinkage long
- sys32_getrlimit(unsigned int resource, struct rlimit32 *rlim)
- {
- struct rlimit r;
- int ret;
- mm_segment_t old_fs;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- ret = sys_getrlimit(resource, &r);
- set_fs(old_fs);
- if (!ret) {
- if (verify_area(VERIFY_WRITE, rlim, sizeof(struct rlimit32)) ||
- __put_user(RESOURCE32(r.rlim_cur), &rlim->rlim_cur) ||
- __put_user(RESOURCE32(r.rlim_max), &rlim->rlim_max))
- ret = -EFAULT;
- }
- return ret;
- }
- extern asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit *rlim);
- asmlinkage long
- sys32_old_getrlimit(unsigned int resource, struct rlimit32 *rlim)
- {
- struct rlimit r;
- int ret;
- mm_segment_t old_fs;
-
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- ret = sys_old_getrlimit(resource, &r);
- set_fs(old_fs);
- if (!ret) {
- if (verify_area(VERIFY_WRITE, rlim, sizeof(struct rlimit32)) ||
- __put_user(r.rlim_cur, &rlim->rlim_cur) ||
- __put_user(r.rlim_max, &rlim->rlim_max))
- ret = -EFAULT;
- }
- return ret;
- }
- extern asmlinkage long sys_setrlimit(unsigned int resource, struct rlimit *rlim);
- asmlinkage long
- sys32_setrlimit(unsigned int resource, struct rlimit32 *rlim)
- {
- struct rlimit r;
- int ret;
- mm_segment_t old_fs = get_fs ();
- if (resource >= RLIM_NLIMITS) return -EINVAL;
- if (verify_area(VERIFY_READ, rlim, sizeof(struct rlimit32)) ||
- __get_user (r.rlim_cur, &rlim->rlim_cur) ||
- __get_user (r.rlim_max, &rlim->rlim_max))
- return -EFAULT;
- if (r.rlim_cur == RLIM_INFINITY32)
- r.rlim_cur = RLIM_INFINITY;
- if (r.rlim_max == RLIM_INFINITY32)
- r.rlim_max = RLIM_INFINITY;
- set_fs (KERNEL_DS);
- ret = sys_setrlimit(resource, &r);
- set_fs (old_fs);
- return ret;
- }
- /*
- * sys_time() can be implemented in user-level using
- * sys_gettimeofday(). IA64 did this but i386 Linux did not
- * so we have to implement this system call here.
- */
- asmlinkage long sys32_time(int * tloc)
- {
- int i;
- /* SMP: This is fairly trivial. We grab CURRENT_TIME and
- stuff it to user space. No side effects */
- i = CURRENT_TIME;
- if (tloc) {
- if (put_user(i,tloc))
- i = -EFAULT;
- }
- return i;
- }
- struct rusage32 {
- struct timeval32 ru_utime;
- struct timeval32 ru_stime;
- int ru_maxrss;
- int ru_ixrss;
- int ru_idrss;
- int ru_isrss;
- int ru_minflt;
- int ru_majflt;
- int ru_nswap;
- int ru_inblock;
- int ru_oublock;
- int ru_msgsnd;
- int ru_msgrcv;
- int ru_nsignals;
- int ru_nvcsw;
- int ru_nivcsw;
- };
- static int
- put_rusage (struct rusage32 *ru, struct rusage *r)
- {
- if (verify_area(VERIFY_WRITE, ru, sizeof(struct rusage32)) ||
- __put_user (r->ru_utime.tv_sec, &ru->ru_utime.tv_sec) ||
- __put_user (r->ru_utime.tv_usec, &ru->ru_utime.tv_usec) ||
- __put_user (r->ru_stime.tv_sec, &ru->ru_stime.tv_sec) ||
- __put_user (r->ru_stime.tv_usec, &ru->ru_stime.tv_usec) ||
- __put_user (r->ru_maxrss, &ru->ru_maxrss) ||
- __put_user (r->ru_ixrss, &ru->ru_ixrss) ||
- __put_user (r->ru_idrss, &ru->ru_idrss) ||
- __put_user (r->ru_isrss, &ru->ru_isrss) ||
- __put_user (r->ru_minflt, &ru->ru_minflt) ||
- __put_user (r->ru_majflt, &ru->ru_majflt) ||
- __put_user (r->ru_nswap, &ru->ru_nswap) ||
- __put_user (r->ru_inblock, &ru->ru_inblock) ||
- __put_user (r->ru_oublock, &ru->ru_oublock) ||
- __put_user (r->ru_msgsnd, &ru->ru_msgsnd) ||
- __put_user (r->ru_msgrcv, &ru->ru_msgrcv) ||
- __put_user (r->ru_nsignals, &ru->ru_nsignals) ||
- __put_user (r->ru_nvcsw, &ru->ru_nvcsw) ||
- __put_user (r->ru_nivcsw, &ru->ru_nivcsw))
- return -EFAULT;
- return 0;
- }
- extern asmlinkage long sys_wait4(pid_t pid,unsigned int * stat_addr,
- int options, struct rusage * ru);
- asmlinkage long
- sys32_wait4(__kernel_pid_t32 pid, unsigned int *stat_addr, int options,
- struct rusage32 *ru)
- {
- if (!ru)
- return sys_wait4(pid, stat_addr, options, NULL);
- else {
- struct rusage r;
- int ret;
- unsigned int status;
- mm_segment_t old_fs = get_fs();
-
- set_fs (KERNEL_DS);
- ret = sys_wait4(pid, stat_addr ? &status : NULL, options, &r);
- set_fs (old_fs);
- if (put_rusage (ru, &r)) return -EFAULT;
- if (stat_addr && put_user (status, stat_addr))
- return -EFAULT;
- return ret;
- }
- }
- asmlinkage long
- sys32_waitpid(__kernel_pid_t32 pid, unsigned int *stat_addr, int options)
- {
- return sys32_wait4(pid, stat_addr, options, NULL);
- }
- extern asmlinkage long
- sys_getrusage(int who, struct rusage *ru);
- asmlinkage long
- sys32_getrusage(int who, struct rusage32 *ru)
- {
- struct rusage r;
- int ret;
- mm_segment_t old_fs = get_fs();
-
- set_fs (KERNEL_DS);
- ret = sys_getrusage(who, &r);
- set_fs (old_fs);
- if (put_rusage (ru, &r)) return -EFAULT;
- return ret;
- }
- struct tms32 {
- __kernel_clock_t32 tms_utime;
- __kernel_clock_t32 tms_stime;
- __kernel_clock_t32 tms_cutime;
- __kernel_clock_t32 tms_cstime;
- };
- extern int sys_times(struct tms *);
-
- asmlinkage long
- sys32_times(struct tms32 *tbuf)
- {
- struct tms t;
- long ret;
- mm_segment_t old_fs = get_fs ();
-
- set_fs (KERNEL_DS);
- ret = sys_times(tbuf ? &t : NULL);
- set_fs (old_fs);
- if (tbuf) {
- if (verify_area(VERIFY_WRITE, tbuf, sizeof(struct tms32)) ||
- __put_user (t.tms_utime, &tbuf->tms_utime) ||
- __put_user (t.tms_stime, &tbuf->tms_stime) ||
- __put_user (t.tms_cutime, &tbuf->tms_cutime) ||
- __put_user (t.tms_cstime, &tbuf->tms_cstime))
- return -EFAULT;
- }
- return ret;
- }
- static inline int get_flock(struct flock *kfl, struct flock32 *ufl)
- {
- int err;
-
- err = get_user(kfl->l_type, &ufl->l_type);
- err |= __get_user(kfl->l_whence, &ufl->l_whence);
- err |= __get_user(kfl->l_start, &ufl->l_start);
- err |= __get_user(kfl->l_len, &ufl->l_len);
- err |= __get_user(kfl->l_pid, &ufl->l_pid);
- return err;
- }
- static inline int put_flock(struct flock *kfl, struct flock32 *ufl)
- {
- int err;
-
- err = __put_user(kfl->l_type, &ufl->l_type);
- err |= __put_user(kfl->l_whence, &ufl->l_whence);
- err |= __put_user(kfl->l_start, &ufl->l_start);
- err |= __put_user(kfl->l_len, &ufl->l_len);
- err |= __put_user(kfl->l_pid, &ufl->l_pid);
- return err;
- }
- extern asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg);
- asmlinkage long sys32_fcntl64(unsigned int fd, unsigned int cmd, unsigned long arg);
- asmlinkage long sys32_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg)
- {
- switch (cmd) {
- case F_GETLK:
- case F_SETLK:
- case F_SETLKW:
- {
- struct flock f;
- mm_segment_t old_fs;
- long ret;
-
- if (get_flock(&f, (struct flock32 *)arg))
- return -EFAULT;
- old_fs = get_fs(); set_fs (KERNEL_DS);
- ret = sys_fcntl(fd, cmd, (unsigned long)&f);
- set_fs (old_fs);
- if (ret) return ret;
- if (put_flock(&f, (struct flock32 *)arg))
- return -EFAULT;
- return 0;
- }
- case F_GETLK64:
- case F_SETLK64:
- case F_SETLKW64:
- return sys32_fcntl64(fd,cmd,arg);
- default:
- return sys_fcntl(fd, cmd, (unsigned long)arg);
- }
- }
- static inline int get_flock64(struct ia32_flock64 *fl32, struct flock *fl64)
- {
- if (access_ok(fl32, sizeof(struct ia32_flock64), VERIFY_WRITE)) {
- int ret = __get_user(fl64->l_type, &fl32->l_type);
- ret |= __get_user(fl64->l_whence, &fl32->l_whence);
- ret |= __get_user(fl64->l_start, &fl32->l_start);
- ret |= __get_user(fl64->l_len, &fl32->l_len);
- ret |= __get_user(fl64->l_pid, &fl32->l_pid);
- return ret;
- }
- return -EFAULT;
- }
- static inline int put_flock64(struct ia32_flock64 *fl32, struct flock *fl64)
- {
- if (access_ok(fl32, sizeof(struct ia32_flock64), VERIFY_WRITE)) {
- int ret = __put_user(fl64->l_type, &fl32->l_type);
- ret |= __put_user(fl64->l_whence, &fl32->l_whence);
- ret |= __put_user(fl64->l_start, &fl32->l_start);
- ret |= __put_user(fl64->l_len, &fl32->l_len);
- ret |= __put_user(fl64->l_pid, &fl32->l_pid);
- return ret;
- }
- return -EFAULT;
- }
- asmlinkage long sys32_fcntl64(unsigned int fd, unsigned int cmd, unsigned long arg)
- {
- struct flock fl64;
- mm_segment_t oldfs = get_fs();
- int ret = 0;
- int oldcmd = cmd;
- unsigned long oldarg = arg;
- switch (cmd) {
- case F_GETLK64:
- cmd = F_GETLK;
- goto cnv;
- case F_SETLK64:
- cmd = F_SETLK;
- goto cnv;
- case F_SETLKW64:
- cmd = F_SETLKW;
- cnv:
- ret = get_flock64((struct ia32_flock64 *)arg, &fl64);
- arg = (unsigned long)&fl64;
- set_fs(KERNEL_DS);
- break;
- case F_GETLK:
- case F_SETLK:
- case F_SETLKW:
- return sys32_fcntl(fd,cmd,arg);
- }
- if (!ret)
- ret = sys_fcntl(fd, cmd, arg);
- set_fs(oldfs);
- if (oldcmd == F_GETLK64 && !ret)
- ret = put_flock64((struct ia32_flock64 *)oldarg, &fl64);
- return ret;
- }
- int sys32_ni_syscall(int call)
- {
- printk(KERN_INFO "IA32 syscall %d from %s not implementedn", call,
- current->comm);
- return -ENOSYS;
- }
- /* 32-bit timeval and related flotsam. */
- extern asmlinkage long sys_utime(char * filename, struct utimbuf * times);
- struct utimbuf32 {
- __kernel_time_t32 actime, modtime;
- };
- asmlinkage long
- sys32_utime(char * filename, struct utimbuf32 *times)
- {
- struct utimbuf t;
- mm_segment_t old_fs;
- int ret;
- char *filenam;
-
- if (!times)
- return sys_utime(filename, NULL);
- if (verify_area(VERIFY_READ, times, sizeof(struct utimbuf32)) ||
- __get_user (t.actime, ×->actime) ||
- __get_user (t.modtime, ×->modtime))
- return -EFAULT;
- filenam = getname (filename);
- ret = PTR_ERR(filenam);
- if (!IS_ERR(filenam)) {
- old_fs = get_fs();
- set_fs (KERNEL_DS);
- ret = sys_utime(filenam, &t);
- set_fs (old_fs);
- putname(filenam);
- }
- return ret;
- }
- extern asmlinkage long sys_sysfs(int option, unsigned long arg1,
- unsigned long arg2);
- asmlinkage long
- sys32_sysfs(int option, u32 arg1, u32 arg2)
- {
- return sys_sysfs(option, arg1, arg2);
- }
- extern asmlinkage long sys_mount(char * dev_name, char * dir_name, char * type,
- unsigned long new_flags, void *data);
- static char *badfs[] = {
- "smbfs", "ncpfs", NULL
- };
- static int checktype(char *user_type)
- {
- int err = 0;
- char **s,*kernel_type = getname(user_type);
- if (!kernel_type || IS_ERR(kernel_type))
- return -EFAULT;
- for (s = badfs; *s; ++s)
- if (!strcmp(kernel_type, *s)) {
- printk(KERN_ERR "mount32: unsupported fs `%s' -- use 64bit mountn", *s);
- err = -EINVAL;
- break;
- }
- putname(user_type);
- return err;
- }
- asmlinkage long
- sys32_mount(char *dev_name, char *dir_name, char *type,
- unsigned long new_flags, u32 data)
- {
- int err;
- if(!capable(CAP_SYS_ADMIN))
- return -EPERM;
- err = checktype(type);
- if (err)
- return err;
- return sys_mount(dev_name, dir_name, type, new_flags, (void *)AA(data));
- }
- struct sysinfo32 {
- s32 uptime;
- u32 loads[3];
- u32 totalram;
- u32 freeram;
- u32 sharedram;
- u32 bufferram;
- u32 totalswap;
- u32 freeswap;
- unsigned short procs;
- char _f[22];
- };
- extern asmlinkage long sys_sysinfo(struct sysinfo *info);
- asmlinkage long
- sys32_sysinfo(struct sysinfo32 *info)
- {
- struct sysinfo s;
- int ret;
- mm_segment_t old_fs = get_fs ();
-
- set_fs (KERNEL_DS);
- ret = sys_sysinfo(&s);
- set_fs (old_fs);
- if (verify_area(VERIFY_WRITE, info, sizeof(struct sysinfo32)) ||
- __put_user (s.uptime, &info->uptime) ||
- __put_user (s.loads[0], &info->loads[0]) ||
- __put_user (s.loads[1], &info->loads[1]) ||
- __put_user (s.loads[2], &info->loads[2]) ||
- __put_user (s.totalram, &info->totalram) ||
- __put_user (s.freeram, &info->freeram) ||
- __put_user (s.sharedram, &info->sharedram) ||
- __put_user (s.bufferram, &info->bufferram) ||
- __put_user (s.totalswap, &info->totalswap) ||
- __put_user (s.freeswap, &info->freeswap) ||
- __put_user (s.procs, &info->procs))
- return -EFAULT;
- return 0;
- }
-
- extern asmlinkage long sys_sched_rr_get_interval(pid_t pid,
- struct timespec *interval);
- asmlinkage long
- sys32_sched_rr_get_interval(__kernel_pid_t32 pid, struct timespec32 *interval)
- {
- struct timespec t;
- int ret;
- mm_segment_t old_fs = get_fs ();
-
- set_fs (KERNEL_DS);
- ret = sys_sched_rr_get_interval(pid, &t);
- set_fs (old_fs);
- if (verify_area(VERIFY_WRITE, interval, sizeof(struct timespec32)) ||
- __put_user (t.tv_sec, &interval->tv_sec) ||
- __put_user (t.tv_nsec, &interval->tv_nsec))
- return -EFAULT;
- return ret;
- }
- extern asmlinkage long sys_sigprocmask(int how, old_sigset_t *set,
- old_sigset_t *oset);
- asmlinkage long
- sys32_sigprocmask(int how, old_sigset32_t *set, old_sigset32_t *oset)
- {
- old_sigset_t s;
- int ret;
- mm_segment_t old_fs = get_fs();
-
- if (set && get_user (s, set)) return -EFAULT;
- set_fs (KERNEL_DS);
- ret = sys_sigprocmask(how, set ? &s : NULL, oset ? &s : NULL);
- set_fs (old_fs);
- if (ret) return ret;
- if (oset && put_user (s, oset)) return -EFAULT;
- return 0;
- }
- extern asmlinkage long sys_sigpending(old_sigset_t *set);
- asmlinkage long
- sys32_sigpending(old_sigset32_t *set)
- {
- old_sigset_t s;
- int ret;
- mm_segment_t old_fs = get_fs();
-
- set_fs (KERNEL_DS);
- ret = sys_sigpending(&s);
- set_fs (old_fs);
- if (put_user (s, set)) return -EFAULT;
- return ret;
- }
- extern asmlinkage long sys_rt_sigpending(sigset_t *set, size_t sigsetsize);
- asmlinkage long
- sys32_rt_sigpending(sigset32_t *set, __kernel_size_t32 sigsetsize)
- {
- sigset_t s;
- sigset32_t s32;
- int ret;
- mm_segment_t old_fs = get_fs();
-
- set_fs (KERNEL_DS);
- ret = sys_rt_sigpending(&s, sigsetsize);
- set_fs (old_fs);
- if (!ret) {
- switch (_NSIG_WORDS) {
- case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
- case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
- case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
- case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
- }
- if (copy_to_user (set, &s32, sizeof(sigset32_t)))
- return -EFAULT;
- }
- return ret;
- }
- siginfo_t32 *
- siginfo64to32(siginfo_t32 *d, siginfo_t *s)
- {
- memset (d, 0, sizeof(siginfo_t32));
- d->si_signo = s->si_signo;
- d->si_errno = s->si_errno;
- d->si_code = s->si_code;
- if (s->si_signo >= SIGRTMIN) {
- d->si_pid = s->si_pid;
- d->si_uid = s->si_uid;
- /* XXX: Ouch, how to find this out??? */
- d->si_int = s->si_int;
- } else switch (s->si_signo) {
- /* XXX: What about POSIX1.b timers */
- case SIGCHLD:
- d->si_pid = s->si_pid;
- d->si_status = s->si_status;
- d->si_utime = s->si_utime;
- d->si_stime = s->si_stime;
- break;
- case SIGSEGV:
- case SIGBUS:
- case SIGFPE:
- case SIGILL:
- d->si_addr = (long)(s->si_addr);
- // d->si_trapno = s->si_trapno;
- break;
- case SIGPOLL:
- d->si_band = s->si_band;
- d->si_fd = s->si_fd;
- break;
- default:
- d->si_pid = s->si_pid;
- d->si_uid = s->si_uid;
- break;
- }
- return d;
- }
- siginfo_t *
- siginfo32to64(siginfo_t *d, siginfo_t32 *s)
- {
- d->si_signo = s->si_signo;
- d->si_errno = s->si_errno;
- d->si_code = s->si_code;
- if (s->si_signo >= SIGRTMIN) {
- d->si_pid = s->si_pid;
- d->si_uid = s->si_uid;
- /* XXX: Ouch, how to find this out??? */
- d->si_int = s->si_int;
- } else switch (s->si_signo) {
- /* XXX: What about POSIX1.b timers */
- case SIGCHLD:
- d->si_pid = s->si_pid;
- d->si_status = s->si_status;
- d->si_utime = s->si_utime;
- d->si_stime = s->si_stime;
- break;
- case SIGSEGV:
- case SIGBUS:
- case SIGFPE:
- case SIGILL:
- d->si_addr = (void *)A(s->si_addr);
- // d->si_trapno = s->si_trapno;
- break;
- case SIGPOLL:
- d->si_band = s->si_band;
- d->si_fd = s->si_fd;
- break;
- default:
- d->si_pid = s->si_pid;
- d->si_uid = s->si_uid;
- break;
- }
- return d;
- }
- extern asmlinkage long
- sys_rt_sigtimedwait(const sigset_t *uthese, siginfo_t *uinfo,
- const struct timespec *uts, size_t sigsetsize);
- asmlinkage long
- sys32_rt_sigtimedwait(sigset32_t *uthese, siginfo_t32 *uinfo,
- struct timespec32 *uts, __kernel_size_t32 sigsetsize)
- {
- sigset_t s;
- sigset32_t s32;
- struct timespec t;
- int ret;
- mm_segment_t old_fs = get_fs();
- siginfo_t info;
- siginfo_t32 info32;
-
- if (copy_from_user (&s32, uthese, sizeof(sigset32_t)))
- return -EFAULT;
- switch (_NSIG_WORDS) {
- case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
- case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
- case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
- case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
- }
- if (uts) {
- if (verify_area(VERIFY_READ, uts, sizeof(struct timespec32)) ||
- __get_user (t.tv_sec, &uts->tv_sec) ||
- __get_user (t.tv_nsec, &uts->tv_nsec))
- return -EFAULT;
- }
- set_fs (KERNEL_DS);
- ret = sys_rt_sigtimedwait(&s, &info, &t, sigsetsize);
- set_fs (old_fs);
- if (ret >= 0 && uinfo) {
- if (copy_to_user (uinfo, siginfo64to32(&info32, &info),
- sizeof(siginfo_t32)))
- return -EFAULT;
- }
- return ret;
- }
- extern asmlinkage long
- sys_rt_sigqueueinfo(int pid, int sig, siginfo_t *uinfo);
- asmlinkage long
- sys32_rt_sigqueueinfo(int pid, int sig, siginfo_t32 *uinfo)
- {
- siginfo_t info;
- siginfo_t32 info32;
- int ret;
- mm_segment_t old_fs = get_fs();
-
- if (copy_from_user (&info32, uinfo, sizeof(siginfo_t32)))
- return -EFAULT;
- /* XXX: Is this correct? */
- siginfo32to64(&info, &info32);
- set_fs (KERNEL_DS);
- ret = sys_rt_sigqueueinfo(pid, sig, &info);
- set_fs (old_fs);
- return ret;
- }
- extern void check_pending(int signum);
- asmlinkage long sys_utimes(char *, struct timeval *);
- asmlinkage long
- sys32_utimes(char *filename, struct timeval32 *tvs)
- {
- char *kfilename;
- struct timeval ktvs[2];
- mm_segment_t old_fs;
- int ret;
- kfilename = getname(filename);
- ret = PTR_ERR(kfilename);
- if (!IS_ERR(kfilename)) {
- if (tvs) {
- if (get_tv32(&ktvs[0], tvs) ||
- get_tv32(&ktvs[1], 1+tvs))
- return -EFAULT;
- }
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- ret = sys_utimes(kfilename, &ktvs[0]);
- set_fs(old_fs);
- putname(kfilename);
- }
- return ret;
- }
- /* These are here just in case some old ia32 binary calls it. */
- asmlinkage long
- sys32_pause(void)
- {
- current->state = TASK_INTERRUPTIBLE;
- schedule();
- return -ERESTARTNOHAND;
- }
- struct sysctl_ia32 {
- unsigned int name;
- int nlen;
- unsigned int oldval;
- unsigned int oldlenp;
- unsigned int newval;
- unsigned int newlen;
- unsigned int __unused[4];
- };
- asmlinkage long
- sys32_sysctl(struct sysctl_ia32 *args32)
- {
- #ifndef CONFIG_SYSCTL
- return -ENOSYS;
- #else
- struct sysctl_ia32 a32;
- mm_segment_t old_fs = get_fs ();
- void *oldvalp, *newvalp;
- size_t oldlen;
- int *namep;
- long ret;
- extern int do_sysctl(int *name, int nlen, void *oldval, size_t *oldlenp,
- void *newval, size_t newlen);
- if (copy_from_user(&a32, args32, sizeof (a32)))
- return -EFAULT;
- /*
- * We need to pre-validate these because we have to disable address checking
- * before calling do_sysctl() because of OLDLEN but we can't run the risk of the
- * user specifying bad addresses here. Well, since we're dealing with 32 bit
- * addresses, we KNOW that access_ok() will always succeed, so this is an
- * expensive NOP, but so what...
- */
- namep = (int *) A(a32.name);
- oldvalp = (void *) A(a32.oldval);
- newvalp = (void *) A(a32.newval);
- if ((oldvalp && get_user(oldlen, (int *) A(a32.oldlenp)))
- || !access_ok(VERIFY_WRITE, namep, 0)
- || !access_ok(VERIFY_WRITE, oldvalp, 0)
- || !access_ok(VERIFY_WRITE, newvalp, 0))
- return -EFAULT;
- set_fs(KERNEL_DS);
- lock_kernel();
- ret = do_sysctl(namep, a32.nlen, oldvalp, &oldlen, newvalp, (size_t) a32.newlen);
- unlock_kernel();
- set_fs(old_fs);
- if (oldvalp && put_user (oldlen, (int *) A(a32.oldlenp)))
- return -EFAULT;
- return ret;
- #endif
- }
- extern asmlinkage ssize_t sys_pread(unsigned int fd, char * buf,
- size_t count, loff_t pos);
- extern asmlinkage ssize_t sys_pwrite(unsigned int fd, const char * buf,
- size_t count, loff_t pos);
- typedef __kernel_ssize_t32 ssize_t32;
- /* warning: next two assume little endian */
- asmlinkage ssize_t32
- sys32_pread(unsigned int fd, char *ubuf, __kernel_size_t32 count,
- u32 poslo, u32 poshi)
- {
- return sys_pread(fd, ubuf, count,
- ((loff_t)AA(poshi) << 32) | AA(poslo));
- }
- asmlinkage ssize_t32
- sys32_pwrite(unsigned int fd, char *ubuf, __kernel_size_t32 count,
- u32 poslo, u32 poshi)
- {
- return sys_pwrite(fd, ubuf, count,
- ((loff_t)AA(poshi) << 32) | AA(poslo));
- }
- extern asmlinkage long sys_personality(unsigned long);
- asmlinkage long
- sys32_personality(unsigned long personality)
- {
- int ret;
- if (personality(current->personality) == PER_LINUX32 &&
- personality == PER_LINUX)
- personality = PER_LINUX32;
- ret = sys_personality(personality);
- if (ret == PER_LINUX32)
- ret = PER_LINUX;
- return ret;
- }
- extern asmlinkage ssize_t sys_sendfile(int out_fd, int in_fd, off_t *offset,
- size_t count);
- asmlinkage long
- sys32_sendfile(int out_fd, int in_fd, __kernel_off_t32 *offset, s32 count)
- {
- mm_segment_t old_fs = get_fs();
- int ret;
- off_t of;
-
- if (offset && get_user(of, offset))
- return -EFAULT;
-
- set_fs(KERNEL_DS);
- ret = sys_sendfile(out_fd, in_fd, offset ? &of : NULL, count);
- set_fs(old_fs);
-
- if (!ret && offset && put_user(of, offset))
- return -EFAULT;
-
- return ret;
- }
- /* Handle adjtimex compatability. */
- struct timex32 {
- u32 modes;
- s32 offset, freq, maxerror, esterror;
- s32 status, constant, precision, tolerance;
- struct timeval32 time;
- s32 tick;
- s32 ppsfreq, jitter, shift, stabil;
- s32 jitcnt, calcnt, errcnt, stbcnt;
- s32 :32; s32 :32; s32 :32; s32 :32;
- s32 :32; s32 :32; s32 :32; s32 :32;
- s32 :32; s32 :32; s32 :32; s32 :32;
- };
- extern int do_adjtimex(struct timex *);
- asmlinkage long
- sys32_adjtimex(struct timex32 *utp)
- {
- struct timex txc;
- int ret;
- memset(&txc, 0, sizeof(struct timex));
- if(verify_area(VERIFY_READ, utp, sizeof(struct timex32)) ||
- __get_user(txc.modes, &utp->modes) ||
- __get_user(txc.offset, &utp->offset) ||
- __get_user(txc.freq, &utp->freq) ||
- __get_user(txc.maxerror, &utp->maxerror) ||
- __get_user(txc.esterror, &utp->esterror) ||
- __get_user(txc.status, &utp->status) ||
- __get_user(txc.constant, &utp->constant) ||
- __get_user(txc.precision, &utp->precision) ||
- __get_user(txc.tolerance, &utp->tolerance) ||
- __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
- __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
- __get_user(txc.tick, &utp->tick) ||
- __get_user(txc.ppsfreq, &utp->ppsfreq) ||
- __get_user(txc.jitter, &utp->jitter) ||
- __get_user(txc.shift, &utp->shift) ||
- __get_user(txc.stabil, &utp->stabil) ||
- __get_user(txc.jitcnt, &utp->jitcnt) ||
- __get_user(txc.calcnt, &utp->calcnt) ||
- __get_user(txc.errcnt, &utp->errcnt) ||
- __get_user(txc.stbcnt, &utp->stbcnt))
- return -EFAULT;
- ret = do_adjtimex(&txc);
- if(verify_area(VERIFY_WRITE, utp, sizeof(struct timex32)) ||
- __put_user(txc.modes, &utp->modes) ||
- __put_user(txc.offset, &utp->offset) ||
- __put_user(txc.freq, &utp->freq) ||
- __put_user(txc.maxerror, &utp->maxerror) ||
- __put_user(txc.esterror, &utp->esterror) ||
- __put_user(txc.status, &utp->status) ||
- __put_user(txc.constant, &utp->constant) ||
- __put_user(txc.precision, &utp->precision) ||
- __put_user(txc.tolerance, &utp->tolerance) ||
- __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
- __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
- __put_user(txc.tick, &utp->tick) ||
- __put_user(txc.ppsfreq, &utp->ppsfreq) ||
- __put_user(txc.jitter, &utp->jitter) ||
- __put_user(txc.shift, &utp->shift) ||
- __put_user(txc.stabil, &utp->stabil) ||
- __put_user(txc.jitcnt, &utp->jitcnt) ||
- __put_user(txc.calcnt, &utp->calcnt) ||
- __put_user(txc.errcnt, &utp->errcnt) ||
- __put_user(txc.stbcnt, &utp->stbcnt))
- ret = -EFAULT;
- return ret;
- }
- /* common code for old and new mmaps */
- static inline long do_mmap2(
- unsigned long addr, unsigned long len,
- unsigned long prot, unsigned long flags,
- unsigned long fd, unsigned long pgoff)
- {
- int error = -EBADF;
- struct file * file = NULL;
- flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
- if (!(flags & MAP_ANONYMOUS)) {
- file = fget(fd);
- if (!file)
- goto out;
- }
- down_write(¤t->mm->mmap_sem);
- error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
- up_write(¤t->mm->mmap_sem);
- if (file)
- fput(file);
- out:
- return error;
- }
- asmlinkage long sys32_mmap2(unsigned long addr, unsigned long len,
- unsigned long prot, unsigned long flags,
- unsigned long fd, unsigned long pgoff)
- {
- return do_mmap2(addr, len, prot, flags, fd, pgoff);
- }
- asmlinkage long sys32_olduname(struct oldold_utsname * name)
- {
- int error;
- if (!name)
- return -EFAULT;
- if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname)))
- return -EFAULT;
-
- down_read(&uts_sem);
-
- error = __copy_to_user(&name->sysname,&system_utsname.sysname,__OLD_UTS_LEN);
- __put_user(0,name->sysname+__OLD_UTS_LEN);
- __copy_to_user(&name->nodename,&system_utsname.nodename,__OLD_UTS_LEN);
- __put_user(0,name->nodename+__OLD_UTS_LEN);
- __copy_to_user(&name->release,&system_utsname.release,__OLD_UTS_LEN);
- __put_user(0,name->release+__OLD_UTS_LEN);
- __copy_to_user(&name->version,&system_utsname.version,__OLD_UTS_LEN);
- __put_user(0,name->version+__OLD_UTS_LEN);
- {
- char *arch = (personality(current->personality) == PER_LINUX32)
- ? "i686" : "x86_64";
-
- __copy_to_user(&name->machine,arch,strlen(arch)+1);
- }
-
- up_read(&uts_sem);
-
- error = error ? -EFAULT : 0;
-
- return error;
- }
- asmlinkage long sys32_uname(struct old_utsname * name)
- {
- int err;
- down_read(&uts_sem);
- err=copy_to_user(name, &system_utsname, sizeof (*name));
- up_read(&uts_sem);
- if (personality(current->personality) == PER_LINUX32)
- err = copy_to_user(name->machine, "i686", 5);
- return err?-EFAULT:0;
- }
- extern int sys_ustat(dev_t, struct ustat *);
- int sys32_ustat(dev_t dev, struct ustat32 *u32p)
- {
- struct ustat u;
- mm_segment_t seg;
- int ret;
-
- seg = get_fs();
- set_fs(KERNEL_DS);
- ret = sys_ustat(dev,&u);
- set_fs(seg);
- if (ret >= 0) {
- if (!access_ok(VERIFY_WRITE,u32p,sizeof(struct ustat32)) ||
- __put_user((__u32) u.f_tfree, &u32p->f_tfree) ||
- __put_user((__u32) u.f_tinode, &u32p->f_tfree) ||
- __copy_to_user(&u32p->f_fname, u.f_fname, sizeof(u.f_fname)) ||
- __copy_to_user(&u32p->f_fpack, u.f_fpack, sizeof(u.f_fpack)))
- ret = -EFAULT;
- }
- return ret;
- }
- static int nargs(u32 src, char **dst)
- {
- int cnt;
- u32 val;
- cnt = 0;
- do {
- int ret = get_user(val, (__u32 *)(u64)src);
- if (ret)
- return ret;
- if (dst)
- dst[cnt] = (char *)(u64)val;
- cnt++;
- src += 4;
- if (cnt >= (MAX_ARG_PAGES*PAGE_SIZE)/sizeof(void*))
- return -E2BIG;
- } while(val);
- if (dst)
- dst[cnt-1] = 0;
- return cnt;
- }
- int sys32_execve(char *name, u32 argv, u32 envp, struct pt_regs regs)
- {
- mm_segment_t oldseg;
- char **buf;
- int na,ne;
- int ret;
- unsigned sz;
-
- na = nargs(argv, NULL);
- if (na < 0)
- return -EFAULT;
- ne = nargs(envp, NULL);
- if (ne < 0)
- return -EFAULT;
- sz = (na+ne)*sizeof(void *);
- if (sz > PAGE_SIZE)
- buf = vmalloc(sz);
- else
- buf = kmalloc(sz, GFP_KERNEL);
- if (!buf)
- return -ENOMEM;
-
- ret = nargs(argv, buf);
- if (ret < 0)
- goto free;
- ret = nargs(envp, buf + na);
- if (ret < 0)
- goto free;
- name = getname(name);
- ret = PTR_ERR(name);
- if (IS_ERR(name))
- goto free;
- oldseg = get_fs();
- set_fs(KERNEL_DS);
- ret = do_execve(name, buf, buf+na, ®s);
- set_fs(oldseg);
- if (ret == 0)
- current->ptrace &= ~PT_DTRACE;
- putname(name);
-
- free:
- if (sz > PAGE_SIZE)
- vfree(buf);
- else
- kfree(buf);
- return ret;
- }
- asmlinkage int sys32_fork(struct pt_regs regs)
- {
- return do_fork(SIGCHLD, regs.rsp, ®s, 0);
- }
- asmlinkage int sys32_clone(unsigned int clone_flags, unsigned int newsp, struct pt_regs regs)
- {
- if (!newsp)
- newsp = regs.rsp;
- return do_fork(clone_flags, newsp, ®s, 0);
- }
- /*
- * This is trivial, and on the face of it looks like it
- * could equally well be done in user mode.
- *
- * Not so, for quite unobvious reasons - register pressure.
- * In user mode vfork() cannot have a stack frame, and if
- * done by calling the "clone()" system call directly, you
- * do not have enough call-clobbered registers to hold all
- * the information you need.
- */
- asmlinkage int sys32_vfork(struct pt_regs regs)
- {
- return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs.rsp, ®s, 0);
- }
- /*
- * Some system calls that need sign extended arguments. This could be done by a generic wrapper.
- */
- extern off_t sys_lseek (unsigned int fd, off_t offset, unsigned int origin);
- int sys32_lseek (unsigned int fd, int offset, unsigned int whence)
- {
- return sys_lseek(fd, offset, whence);
- }
- extern int sys_kill(pid_t pid, int sig);
- int sys32_kill(int pid, int sig)
- {
- return sys_kill(pid, sig);
- }
-
- #if defined(CONFIG_NFSD) || defined(CONFIG_NFSD_MODULE)
- /* Stuff for NFS server syscalls... */
- struct nfsctl_svc32 {
- u16 svc32_port;
- s32 svc32_nthreads;
- };
- struct nfsctl_client32 {
- s8 cl32_ident[NFSCLNT_IDMAX+1];
- s32 cl32_naddr;
- struct in_addr cl32_addrlist[NFSCLNT_ADDRMAX];
- s32 cl32_fhkeytype;
- s32 cl32_fhkeylen;
- u8 cl32_fhkey[NFSCLNT_KEYMAX];
- };
- struct nfsctl_export32 {
- s8 ex32_client[NFSCLNT_IDMAX+1];
- s8 ex32_path[NFS_MAXPATHLEN+1];
- __kernel_dev_t32 ex32_dev;
- __kernel_ino_t32 ex32_ino;
- s32 ex32_flags;
- __kernel_uid_t32 ex32_anon_uid;
- __kernel_gid_t32 ex32_anon_gid;
- };
- struct nfsctl_uidmap32 {
- u32 ug32_ident; /* char * */
- __kernel_uid_t32 ug32_uidbase;
- s32 ug32_uidlen;
- u32 ug32_udimap; /* uid_t * */
- __kernel_uid_t32 ug32_gidbase;
- s32 ug32_gidlen;
- u32 ug32_gdimap; /* gid_t * */
- };
- struct nfsctl_fhparm32 {
- struct sockaddr gf32_addr;
- __kernel_dev_t32 gf32_dev;
- __kernel_ino_t32 gf32_ino;
- s32 gf32_version;
- };
- struct nfsctl_fdparm32 {
- struct sockaddr gd32_addr;
- s8 gd32_path[NFS_MAXPATHLEN+1];
- s32 gd32_version;
- };
- struct nfsctl_fsparm32 {
- struct sockaddr gd32_addr;
- s8 gd32_path[NFS_MAXPATHLEN+1];
- s32 gd32_maxlen;
- };
- struct nfsctl_arg32 {
- s32 ca32_version; /* safeguard */
- union {
- struct nfsctl_svc32 u32_svc;
- struct nfsctl_client32 u32_client;
- struct nfsctl_export32 u32_export;
- struct nfsctl_uidmap32 u32_umap;
- struct nfsctl_fhparm32 u32_getfh;
- struct nfsctl_fdparm32 u32_getfd;
- struct nfsctl_fsparm32 u32_getfs;
- } u;
- #define ca32_svc u.u32_svc
- #define ca32_client u.u32_client
- #define ca32_export u.u32_export
- #define ca32_umap u.u32_umap
- #define ca32_getfh u.u32_getfh
- #define ca32_getfd u.u32_getfd
- #define ca32_getfs u.u32_getfs
- #define ca32_authd u.u32_authd
- };
- union nfsctl_res32 {
- __u8 cr32_getfh[NFS_FHSIZE];
- struct knfsd_fh cr32_getfs;
- };
- static int nfs_svc32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
- {
- int err;
-
- err = get_user(karg->ca_version, &arg32->ca32_version);
- err |= __get_user(karg->ca_svc.svc_port, &arg32->ca32_svc.svc32_port);
- err |= __get_user(karg->ca_svc.svc_nthreads, &arg32->ca32_svc.svc32_nthreads);
- return err;
- }
- static int nfs_clnt32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
- {
- int err;
-
- err = get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_client.cl_ident[0],
- &arg32->ca32_client.cl32_ident[0],
- NFSCLNT_IDMAX);
- err |= __get_user(karg->ca_client.cl_naddr, &arg32->ca32_client.cl32_naddr);
- err |= copy_from_user(&karg->ca_client.cl_addrlist[0],
- &arg32->ca32_client.cl32_addrlist[0],
- (sizeof(struct in_addr) * NFSCLNT_ADDRMAX));
- err |= __get_user(karg->ca_client.cl_fhkeytype,
- &arg32->ca32_client.cl32_fhkeytype);
- err |= __get_user(karg->ca_client.cl_fhkeylen,
- &arg32->ca32_client.cl32_fhkeylen);
- err |= copy_from_user(&karg->ca_client.cl_fhkey[0],
- &arg32->ca32_client.cl32_fhkey[0],
- NFSCLNT_KEYMAX);
- return err;
- }
- static int nfs_exp32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
- {
- int err;
-
- err = get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_export.ex_client[0],
- &arg32->ca32_export.ex32_client[0],
- NFSCLNT_IDMAX);
- err |= copy_from_user(&karg->ca_export.ex_path[0],
- &arg32->ca32_export.ex32_path[0],
- NFS_MAXPATHLEN);
- err |= __get_user(karg->ca_export.ex_dev,
- &arg32->ca32_export.ex32_dev);
- err |= __get_user(karg->ca_export.ex_ino,
- &arg32->ca32_export.ex32_ino);
- err |= __get_user(karg->ca_export.ex_flags,
- &arg32->ca32_export.ex32_flags);
- err |= __get_user(karg->ca_export.ex_anon_uid,
- &arg32->ca32_export.ex32_anon_uid);
- err |= __get_user(karg->ca_export.ex_anon_gid,
- &arg32->ca32_export.ex32_anon_gid);
- karg->ca_export.ex_anon_uid = high2lowuid(karg->ca_export.ex_anon_uid);
- karg->ca_export.ex_anon_gid = high2lowgid(karg->ca_export.ex_anon_gid);
- return err;
- }
- static int nfs_uud32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
- {
- u32 uaddr;
- int i;
- int err;
- memset(karg, 0, sizeof(*karg));
- if(get_user(karg->ca_version, &arg32->ca32_version))
- return -EFAULT;
- karg->ca_umap.ug_ident = (char *)get_free_page(GFP_USER);
- if(!karg->ca_umap.ug_ident)
- return -ENOMEM;
- err = get_user(uaddr, &arg32->ca32_umap.ug32_ident);
- if(strncpy_from_user(karg->ca_umap.ug_ident,
- (char *)A(uaddr), PAGE_SIZE) <= 0)
- return -EFAULT;
- err |= __get_user(karg->ca_umap.ug_uidbase,
- &arg32->ca32_umap.ug32_uidbase);
- err |= __get_user(karg->ca_umap.ug_uidlen,
- &arg32->ca32_umap.ug32_uidlen);
- err |= __get_user(uaddr, &arg32->ca32_umap.ug32_udimap);
- if (err)
- return -EFAULT;
- karg->ca_umap.ug_udimap = kmalloc((sizeof(uid_t) * karg->ca_umap.ug_uidlen),
- GFP_USER);
- if(!karg->ca_umap.ug_udimap)
- return -ENOMEM;
- for(i = 0; i < karg->ca_umap.ug_uidlen; i++)
- err |= __get_user(karg->ca_umap.ug_udimap[i],
- &(((__kernel_uid_t32 *)A(uaddr))[i]));
- err |= __get_user(karg->ca_umap.ug_gidbase,
- &arg32->ca32_umap.ug32_gidbase);
- err |= __get_user(karg->ca_umap.ug_uidlen,
- &arg32->ca32_umap.ug32_gidlen);
- err |= __get_user(uaddr, &arg32->ca32_umap.ug32_gdimap);
- if (err)
- return -EFAULT;
- karg->ca_umap.ug_gdimap = kmalloc((sizeof(gid_t) * karg->ca_umap.ug_uidlen),
- GFP_USER);
- if(!karg->ca_umap.ug_gdimap)
- return -ENOMEM;
- for(i = 0; i < karg->ca_umap.ug_gidlen; i++)
- err |= __get_user(karg->ca_umap.ug_gdimap[i],
- &(((__kernel_gid_t32 *)A(uaddr))[i]));
- return err;
- }
- static int nfs_getfh32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
- {
- int err;
-
- err = get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_getfh.gf_addr,
- &arg32->ca32_getfh.gf32_addr,
- (sizeof(struct sockaddr)));
- err |= __get_user(karg->ca_getfh.gf_dev,
- &arg32->ca32_getfh.gf32_dev);
- err |= __get_user(karg->ca_getfh.gf_ino,
- &arg32->ca32_getfh.gf32_ino);
- err |= __get_user(karg->ca_getfh.gf_version,
- &arg32->ca32_getfh.gf32_version);
- return err;
- }
- static int nfs_getfd32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
- {
- int err;
-
- err = get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_getfd.gd_addr,
- &arg32->ca32_getfd.gd32_addr,
- (sizeof(struct sockaddr)));
- err |= copy_from_user(&karg->ca_getfd.gd_path,
- &arg32->ca32_getfd.gd32_path,
- (NFS_MAXPATHLEN+1));
- err |= get_user(karg->ca_getfd.gd_version,
- &arg32->ca32_getfd.gd32_version);
- return err;
- }
- static int nfs_getfs32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
- {
- int err;
-
- err = get_user(karg->ca_version, &arg32->ca32_version);
- err |= copy_from_user(&karg->ca_getfs.gd_addr,
- &arg32->ca32_getfs.gd32_addr,
- (sizeof(struct sockaddr)));
- err |= copy_from_user(&karg->ca_getfs.gd_path,
- &arg32->ca32_getfs.gd32_path,
- (NFS_MAXPATHLEN+1));
- err |= get_user(karg->ca_getfs.gd_maxlen,
- &arg32->ca32_getfs.gd32_maxlen);
- return err;
- }
- /* This really doesn't need translations, we are only passing
- * back a union which contains opaque nfs file handle data.
- */
- static int nfs_getfh32_res_trans(union nfsctl_res *kres, union nfsctl_res32 *res32)
- {
- return copy_to_user(res32, kres, sizeof(*res32));
- }
- int asmlinkage sys32_nfsservctl(int cmd, struct nfsctl_arg32 *arg32, union nfsctl_res32 *res32)
- {
- struct nfsctl_arg *karg = NULL;
- union nfsctl_res *kres = NULL;
- mm_segment_t oldfs;
- int err;
- karg = kmalloc(sizeof(*karg), GFP_USER);
- if(!karg)
- return -ENOMEM;
- if(res32) {
- kres = kmalloc(sizeof(*kres), GFP_USER);
- if(!kres) {
- kfree(karg);
- return -ENOMEM;
- }
- }
- switch(cmd) {
- case NFSCTL_SVC:
- err = nfs_svc32_trans(karg, arg32);
- break;
- case NFSCTL_ADDCLIENT:
- err = nfs_clnt32_trans(karg, arg32);
- break;
- case NFSCTL_DELCLIENT:
- err = nfs_clnt32_trans(karg, arg32);
- break;
- case NFSCTL_EXPORT:
- case NFSCTL_UNEXPORT:
- err = nfs_exp32_trans(karg, arg32);
- break;
- /* This one is unimplemented, be we're ready for it. */
- case NFSCTL_UGIDUPDATE:
- err = nfs_uud32_trans(karg, arg32);
- break;
- case NFSCTL_GETFH:
- err = nfs_getfh32_trans(karg, arg32);
- break;
- case NFSCTL_GETFD:
- err = nfs_getfd32_trans(karg, arg32);
- break;
- case NFSCTL_GETFS:
- err = nfs_getfs32_trans(karg, arg32);
- break;
- default:
- err = -EINVAL;
- break;
- }
- if(err)
- goto done;
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_nfsservctl(cmd, karg, kres);
- set_fs(oldfs);
- if (err)
- goto done;
- if((cmd == NFSCTL_GETFH) ||
- (cmd == NFSCTL_GETFD) ||
- (cmd == NFSCTL_GETFS))
- err = nfs_getfh32_res_trans(kres, res32);
- done:
- if(karg) {
- if(cmd == NFSCTL_UGIDUPDATE) {
- if(karg->ca_umap.ug_ident)
- kfree(karg->ca_umap.ug_ident);
- if(karg->ca_umap.ug_udimap)
- kfree(karg->ca_umap.ug_udimap);
- if(karg->ca_umap.ug_gdimap)
- kfree(karg->ca_umap.ug_gdimap);
- }
- kfree(karg);
- }
- if(kres)
- kfree(kres);
- return err;
- }
- #else /* !NFSD */
- extern asmlinkage long sys_ni_syscall(void);
- int asmlinkage sys32_nfsservctl(int cmd, void *notused, void *notused2)
- {
- return sys_ni_syscall();
- }
- #endif
- int sys32_module_warning(void)
- {
- static long warn_time = -(60*HZ);
- if (time_before(warn_time + 60*HZ,jiffies) && strcmp(current->comm,"klogd")) {
- printk(KERN_INFO "%s: 32bit modutils not supported on 64bit kerneln",
- current->comm);
- warn_time = jiffies;
- }
- return -ENOSYS ;
- }
- struct exec_domain ia32_exec_domain = {
- name: "linux/x86",
- pers_low: PER_LINUX32,
- pers_high: PER_LINUX32,
- };
- static int __init ia32_init (void)
- {
- printk("IA32 emulation $Id: sys_ia32.c,v 1.42 2002/09/17 15:23:41 ak Exp $n");
- ia32_exec_domain.signal_map = default_exec_domain.signal_map;
- ia32_exec_domain.signal_invmap = default_exec_domain.signal_invmap;
- register_exec_domain(&ia32_exec_domain);
- return 0;
- }
- __initcall(ia32_init);