patch-2.3.43 linux/arch/ia64/ia32/sys_ia32.c
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- Lines: 4310
- Date:
Tue Feb 8 12:01:59 2000
- Orig file:
v2.3.42/linux/arch/ia64/ia32/sys_ia32.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.3.42/linux/arch/ia64/ia32/sys_ia32.c linux/arch/ia64/ia32/sys_ia32.c
@@ -0,0 +1,4309 @@
+/*
+ * 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)
+ *
+ * These routines maintain argument size conversion between 32bit and 64bit
+ * environment.
+ */
+
+#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/shm.h>
+#include <linux/malloc.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 <asm/types.h>
+#include <asm/uaccess.h>
+#include <asm/semaphore.h>
+#include <asm/ipc.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))
+
+/*
+ * 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(
+int dummy0,
+int dummy1,
+int dummy2,
+int dummy3,
+int dummy4,
+int dummy5,
+int dummy6,
+int dummy7,
+int stack)
+{
+ struct pt_regs *regs = (struct pt_regs *)&stack;
+
+ return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs->r12, regs);
+}
+
+static int
+nargs(unsigned int arg, char **ap)
+{
+ char *ptr;
+ int n, err;
+
+ n = 0;
+ do {
+ if (err = get_user(ptr, (int *)arg))
+ return(err);
+ if (ap)
+ *ap++ = ptr;
+ arg += sizeof(unsigned int);
+ n++;
+ } while (ptr);
+ return(n - 1);
+}
+
+asmlinkage long
+sys32_execve(
+char *filename,
+unsigned int argv,
+unsigned int envp,
+int dummy3,
+int dummy4,
+int dummy5,
+int dummy6,
+int dummy7,
+int stack)
+{
+ struct pt_regs *regs = (struct pt_regs *)&stack;
+ char **av, **ae;
+ int na, ne, r, len;
+
+ na = nargs(argv, NULL);
+ ne = nargs(envp, NULL);
+ len = (na + ne + 2) * sizeof(*av);
+ /*
+ * kmalloc won't work because the `sys_exec' code will attempt
+ * to do a `get_user' on the arg list and `get_user' will fail
+ * on a kernel address (simplifies `get_user'). Instead we
+ * do an mmap to get a user address. Note that since a successful
+ * `execve' frees all current memory we only have to do an
+ * `munmap' if the `execve' failes.
+ */
+ down(¤t->mm->mmap_sem);
+ lock_kernel();
+
+ av = do_mmap_pgoff(0, NULL, len,
+ PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0);
+
+ unlock_kernel();
+ up(¤t->mm->mmap_sem);
+
+ if (IS_ERR(av))
+ return(av);
+ ae = av + na + 1;
+ av[na] = (char *)0;
+ ae[ne] = (char *)0;
+ (void)nargs(argv, av);
+ (void)nargs(envp, ae);
+ r = sys_execve(filename, av, ae, regs);
+ if (IS_ERR(r))
+ sys_munmap(av, len);
+ return(r);
+}
+
+static inline int
+putstat(struct stat32 *ubuf, struct stat *kbuf)
+{
+ int err;
+
+ err = put_user (kbuf->st_dev, &ubuf->st_dev);
+ err |= __put_user (kbuf->st_ino, &ubuf->st_ino);
+ err |= __put_user (kbuf->st_mode, &ubuf->st_mode);
+ err |= __put_user (kbuf->st_nlink, &ubuf->st_nlink);
+ err |= __put_user (kbuf->st_uid, &ubuf->st_uid);
+ err |= __put_user (kbuf->st_gid, &ubuf->st_gid);
+ err |= __put_user (kbuf->st_rdev, &ubuf->st_rdev);
+ err |= __put_user (kbuf->st_size, &ubuf->st_size);
+ err |= __put_user (kbuf->st_atime, &ubuf->st_atime);
+ err |= __put_user (kbuf->st_mtime, &ubuf->st_mtime);
+ err |= __put_user (kbuf->st_ctime, &ubuf->st_ctime);
+ err |= __put_user (kbuf->st_blksize, &ubuf->st_blksize);
+ err |= __put_user (kbuf->st_blocks, &ubuf->st_blocks);
+ return err;
+}
+
+extern asmlinkage int sys_newstat(char * filename, struct stat * statbuf);
+
+asmlinkage int
+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 int sys_newlstat(char * filename, struct stat * statbuf);
+
+asmlinkage int
+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 int sys_newfstat(unsigned int fd, struct stat * statbuf);
+
+asmlinkage int
+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;
+}
+
+#define ALIGN4K(a) (((a) + 0xfff) & ~0xfff)
+#define OFFSET4K(a) ((a) & 0xfff)
+
+unsigned long
+do_mmap_fake(struct file *file, unsigned long addr, unsigned long len,
+ unsigned long prot, unsigned long flags, unsigned long off)
+{
+ struct inode *inode;
+ void *front, *back;
+ unsigned long baddr;
+ int r;
+ char c;
+
+ if (OFFSET4K(addr) || OFFSET4K(off))
+ return -EINVAL;
+ if (prot & PROT_WRITE)
+ prot |= PROT_EXEC;
+ front = NULL;
+ back = NULL;
+ if ((baddr = (addr & PAGE_MASK)) != addr && get_user(c, (char *)baddr) == 0) {
+ front = kmalloc(addr - baddr, GFP_KERNEL);
+ memcpy(front, (void *)baddr, addr - baddr);
+ }
+ if ((addr + len) & ~PAGE_MASK && get_user(c, (char *)(addr + len)) == 0) {
+ back = kmalloc(PAGE_SIZE - ((addr + len) & ~PAGE_MASK), GFP_KERNEL);
+ memcpy(back, addr + len, PAGE_SIZE - ((addr + len) & ~PAGE_MASK));
+ }
+ if ((r = do_mmap(0, baddr, len + (addr - baddr), prot, flags | MAP_ANONYMOUS, 0)) < 0)
+ return(r);
+ if (back) {
+ memcpy(addr + len, back, PAGE_SIZE - ((addr + len) & ~PAGE_MASK));
+ kfree(back);
+ }
+ if (front) {
+ memcpy((void *)baddr, front, addr - baddr);
+ kfree(front);
+ }
+ if (flags & MAP_ANONYMOUS) {
+ memset(addr, 0, len);
+ return(addr);
+ }
+ if (!file)
+ return -EINVAL;
+ inode = file->f_dentry->d_inode;
+ if (!inode->i_op || !inode->i_op->default_file_ops)
+ return -EINVAL;
+ if (!file->f_op->read)
+ return -EINVAL;
+ if (file->f_op->llseek) {
+ if (file->f_op->llseek(file,off,0) != off)
+ return -EINVAL;
+ } else
+ file->f_pos = off;
+ r = file->f_op->read(file, (char *)addr, len, &file->f_pos);
+ return (r < 0) ? -EINVAL : addr;
+}
+
+/*
+ * 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 int
+sys32_mmap(struct mmap_arg_struct *arg)
+{
+ int error = -EFAULT;
+ struct file * file = NULL;
+ struct mmap_arg_struct a;
+
+ if (copy_from_user(&a, arg, sizeof(a)))
+ return -EFAULT;
+
+ down(¤t->mm->mmap_sem);
+ lock_kernel();
+ if (!(a.flags & MAP_ANONYMOUS)) {
+ error = -EBADF;
+ file = fget(a.fd);
+ if (!file)
+ goto out;
+ }
+ a.flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+
+ if ((a.flags & MAP_FIXED) && ((a.addr & ~PAGE_MASK) || (a.offset & ~PAGE_MASK))) {
+ unlock_kernel();
+ up(¤t->mm->mmap_sem);
+ error = do_mmap_fake(file, a.addr, a.len, a.prot, a.flags, a.offset);
+ down(¤t->mm->mmap_sem);
+ lock_kernel();
+ } else
+ error = do_mmap(file, a.addr, a.len, a.prot, a.flags, a.offset);
+ if (file)
+ fput(file);
+out:
+ unlock_kernel();
+ up(¤t->mm->mmap_sem);
+ return error;
+}
+
+asmlinkage long
+sys32_pipe(int *fd)
+{
+ int retval;
+ int fds[2];
+
+ lock_kernel();
+ retval = do_pipe(fds);
+ if (retval)
+ goto out;
+ if (copy_to_user(fd, fds, sizeof(fds)))
+ retval = -EFAULT;
+ out:
+ unlock_kernel();
+ return retval;
+}
+
+asmlinkage long
+sys32_mprotect(unsigned long start, size_t len, unsigned long prot)
+{
+
+ if (prot == 0)
+ return(0);
+ len += start & ~PAGE_MASK;
+ if ((start & ~PAGE_MASK) && (prot & PROT_WRITE))
+ prot |= PROT_EXEC;
+ return(sys_mprotect(start & PAGE_MASK, len & PAGE_MASK, prot));
+}
+
+asmlinkage int
+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) {
+ ret = get_user((long)new_ka.sa.sa_handler, &act->sa_handler);
+ ret |= __copy_from_user(&set32, &act->sa_mask,
+ sizeof(sigset32_t));
+ 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 |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
+
+ if (ret)
+ return -EFAULT;
+ }
+
+ ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+ if (!ret && oact) {
+ 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];
+ }
+ ret = put_user((long)old_ka.sa.sa_handler, &oact->sa_handler);
+ ret |= __copy_to_user(&oact->sa_mask, &set32,
+ sizeof(sigset32_t));
+ ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
+ }
+
+ return ret;
+}
+
+
+extern asmlinkage int sys_rt_sigprocmask(int how, sigset_t *set, sigset_t *oset,
+ size_t sigsetsize);
+
+asmlinkage int
+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 inline int
+put_statfs (struct statfs32 *ubuf, struct statfs *kbuf)
+{
+ int err;
+
+ err = put_user (kbuf->f_type, &ubuf->f_type);
+ err |= __put_user (kbuf->f_bsize, &ubuf->f_bsize);
+ err |= __put_user (kbuf->f_blocks, &ubuf->f_blocks);
+ err |= __put_user (kbuf->f_bfree, &ubuf->f_bfree);
+ err |= __put_user (kbuf->f_bavail, &ubuf->f_bavail);
+ err |= __put_user (kbuf->f_files, &ubuf->f_files);
+ err |= __put_user (kbuf->f_ffree, &ubuf->f_ffree);
+ err |= __put_user (kbuf->f_namelen, &ubuf->f_namelen);
+ err |= __put_user (kbuf->f_fsid.val[0], &ubuf->f_fsid.val[0]);
+ err |= __put_user (kbuf->f_fsid.val[1], &ubuf->f_fsid.val[1]);
+ return err;
+}
+
+extern asmlinkage int sys_statfs(const char * path, struct statfs * buf);
+
+asmlinkage int
+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 int sys_fstatfs(unsigned int fd, struct statfs * buf);
+
+asmlinkage int
+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)
+{
+ return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
+ (__get_user(o->tv_sec, &i->tv_sec) |
+ __get_user(o->tv_usec, &i->tv_usec)));
+ return ENOSYS;
+}
+
+static inline long
+put_tv32(struct timeval32 *o, struct timeval *i)
+{
+ return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
+ (__put_user(i->tv_sec, &o->tv_sec) |
+ __put_user(i->tv_usec, &o->tv_usec)));
+}
+
+static inline long
+get_it32(struct itimerval *o, struct itimerval32 *i)
+{
+ return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
+ (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) |
+ __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) |
+ __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) |
+ __get_user(o->it_value.tv_usec, &i->it_value.tv_usec)));
+ return ENOSYS;
+}
+
+static inline long
+put_it32(struct itimerval32 *o, struct itimerval *i)
+{
+ return (!access_ok(VERIFY_WRITE, i, sizeof(*i)) ||
+ (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) |
+ __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) |
+ __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) |
+ __put_user(i->it_value.tv_usec, &o->it_value.tv_usec)));
+ return ENOSYS;
+}
+
+extern int do_getitimer(int which, struct itimerval *value);
+
+asmlinkage int
+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 int
+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. */
+
+extern struct timezone sys_tz;
+extern int do_sys_settimeofday(struct timeval *tv, struct timezone *tz);
+
+asmlinkage int
+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 int
+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 dirent32 {
+ unsigned int d_ino;
+ unsigned int d_off;
+ unsigned short d_reclen;
+ char d_name[NAME_MAX + 1];
+};
+
+static void
+xlate_dirent(void *dirent, long n)
+{
+ long off;
+ struct dirent *dirp;
+ struct dirent32 *dirp32;
+
+ off = 0;
+ while (off < n) {
+ dirp = (struct dirent *)(dirent + off);
+ off += dirp->d_reclen;
+ dirp32 = (struct dirent32 *)dirp;
+ dirp32->d_ino = dirp->d_ino;
+ dirp32->d_off = (unsigned int)dirp->d_off;
+ dirp32->d_reclen = dirp->d_reclen;
+ strncpy(dirp32->d_name, dirp->d_name, dirp->d_reclen - ((3 * 4) + 2));
+ }
+ return;
+}
+
+asmlinkage long
+sys32_getdents(unsigned int fd, void * dirent, unsigned int count)
+{
+ long n;
+
+ if ((n = sys_getdents(fd, dirent, count)) < 0)
+ return(n);
+ xlate_dirent(dirent, n);
+ return(n);
+}
+
+asmlinkage int
+sys32_readdir(unsigned int fd, void * dirent, unsigned int count)
+{
+ int n;
+ struct dirent *dirp;
+
+ if ((n = old_readdir(fd, dirent, count)) < 0)
+ return(n);
+ dirp = (struct dirent *)dirent;
+ xlate_dirent(dirent, dirp->d_reclen);
+ return(n);
+}
+
+/*
+ * 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(x,y) (((x)+(y)-1)/(y))
+
+asmlinkage int
+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(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 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)
+{
+ int err;
+
+ err = put_user (r->ru_utime.tv_sec, &ru->ru_utime.tv_sec);
+ err |= __put_user (r->ru_utime.tv_usec, &ru->ru_utime.tv_usec);
+ err |= __put_user (r->ru_stime.tv_sec, &ru->ru_stime.tv_sec);
+ err |= __put_user (r->ru_stime.tv_usec, &ru->ru_stime.tv_usec);
+ err |= __put_user (r->ru_maxrss, &ru->ru_maxrss);
+ err |= __put_user (r->ru_ixrss, &ru->ru_ixrss);
+ err |= __put_user (r->ru_idrss, &ru->ru_idrss);
+ err |= __put_user (r->ru_isrss, &ru->ru_isrss);
+ err |= __put_user (r->ru_minflt, &ru->ru_minflt);
+ err |= __put_user (r->ru_majflt, &ru->ru_majflt);
+ err |= __put_user (r->ru_nswap, &ru->ru_nswap);
+ err |= __put_user (r->ru_inblock, &ru->ru_inblock);
+ err |= __put_user (r->ru_oublock, &ru->ru_oublock);
+ err |= __put_user (r->ru_msgsnd, &ru->ru_msgsnd);
+ err |= __put_user (r->ru_msgrcv, &ru->ru_msgrcv);
+ err |= __put_user (r->ru_nsignals, &ru->ru_nsignals);
+ err |= __put_user (r->ru_nvcsw, &ru->ru_nvcsw);
+ err |= __put_user (r->ru_nivcsw, &ru->ru_nivcsw);
+ return err;
+}
+
+extern asmlinkage int sys_wait4(pid_t pid,unsigned int * stat_addr,
+ int options, struct rusage * ru);
+
+asmlinkage int
+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 int
+sys32_waitpid(__kernel_pid_t32 pid, unsigned int *stat_addr, int options)
+{
+ return sys32_wait4(pid, stat_addr, options, NULL);
+}
+
+struct timespec32 {
+ int tv_sec;
+ int tv_nsec;
+};
+
+extern asmlinkage int sys_nanosleep(struct timespec *rqtp,
+ struct timespec *rmtp);
+
+asmlinkage int
+sys32_nanosleep(struct timespec32 *rqtp, struct timespec32 *rmtp)
+{
+ struct timespec t;
+ int ret;
+ mm_segment_t old_fs = get_fs ();
+
+ if (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 (__put_user (t.tv_sec, &rmtp->tv_sec) ||
+ __put_user (t.tv_nsec, &rmtp->tv_nsec))
+ return -EFAULT;
+ }
+ return ret;
+}
+
+struct iovec32 { unsigned int iov_base; int iov_len; };
+
+typedef ssize_t (*IO_fn_t)(struct file *, char *, size_t, loff_t *);
+
+static long
+do_readv_writev32(int type, struct file *file, const struct iovec32 *vector,
+ u32 count)
+{
+ unsigned long tot_len;
+ struct iovec iovstack[UIO_FASTIOV];
+ struct iovec *iov=iovstack, *ivp;
+ struct inode *inode;
+ long retval, i;
+ IO_fn_t fn;
+
+ /* First get the "struct iovec" from user memory and
+ * verify all the pointers
+ */
+ if (!count)
+ return 0;
+ if(verify_area(VERIFY_READ, vector, sizeof(struct iovec32)*count))
+ return -EFAULT;
+ if (count > UIO_MAXIOV)
+ return -EINVAL;
+ if (count > UIO_FASTIOV) {
+ iov = kmalloc(count*sizeof(struct iovec), GFP_KERNEL);
+ if (!iov)
+ return -ENOMEM;
+ }
+
+ tot_len = 0;
+ i = count;
+ ivp = iov;
+ while(i > 0) {
+ u32 len;
+ u32 buf;
+
+ __get_user(len, &vector->iov_len);
+ __get_user(buf, &vector->iov_base);
+ tot_len += len;
+ ivp->iov_base = (void *)A(buf);
+ ivp->iov_len = (__kernel_size_t) len;
+ vector++;
+ ivp++;
+ i--;
+ }
+
+ inode = file->f_dentry->d_inode;
+ /* VERIFY_WRITE actually means a read, as we write to user space */
+ retval = locks_verify_area((type == VERIFY_WRITE
+ ? FLOCK_VERIFY_READ : FLOCK_VERIFY_WRITE),
+ inode, file, file->f_pos, tot_len);
+ if (retval) {
+ if (iov != iovstack)
+ kfree(iov);
+ return retval;
+ }
+
+ /* Then do the actual IO. Note that sockets need to be handled
+ * specially as they have atomicity guarantees and can handle
+ * iovec's natively
+ */
+ if (inode->i_sock) {
+ int err;
+ err = sock_readv_writev(type, inode, file, iov, count, tot_len);
+ if (iov != iovstack)
+ kfree(iov);
+ return err;
+ }
+
+ if (!file->f_op) {
+ if (iov != iovstack)
+ kfree(iov);
+ return -EINVAL;
+ }
+ /* VERIFY_WRITE actually means a read, as we write to user space */
+ fn = file->f_op->read;
+ if (type == VERIFY_READ)
+ fn = (IO_fn_t) file->f_op->write;
+ ivp = iov;
+ while (count > 0) {
+ void * base;
+ int len, nr;
+
+ base = ivp->iov_base;
+ len = ivp->iov_len;
+ ivp++;
+ count--;
+ nr = fn(file, base, len, &file->f_pos);
+ if (nr < 0) {
+ if (retval)
+ break;
+ retval = nr;
+ break;
+ }
+ retval += nr;
+ if (nr != len)
+ break;
+ }
+ if (iov != iovstack)
+ kfree(iov);
+ return retval;
+}
+
+asmlinkage long
+sys32_readv(int fd, struct iovec32 *vector, u32 count)
+{
+ struct file *file;
+ long ret = -EBADF;
+
+ lock_kernel();
+ file = fget(fd);
+ if(!file)
+ goto bad_file;
+
+ if(!(file->f_mode & 1))
+ goto out;
+
+ ret = do_readv_writev32(VERIFY_WRITE, file,
+ vector, count);
+out:
+ fput(file);
+bad_file:
+ unlock_kernel();
+ return ret;
+}
+
+asmlinkage long
+sys32_writev(int fd, struct iovec32 *vector, u32 count)
+{
+ struct file *file;
+ int ret = -EBADF;
+
+ lock_kernel();
+ file = fget(fd);
+ if(!file)
+ goto bad_file;
+
+ if(!(file->f_mode & 2))
+ goto out;
+
+ down(&file->f_dentry->d_inode->i_sem);
+ ret = do_readv_writev32(VERIFY_READ, file,
+ vector, count);
+ up(&file->f_dentry->d_inode->i_sem);
+out:
+ fput(file);
+bad_file:
+ unlock_kernel();
+ return ret;
+}
+
+#define RLIM_INFINITY32 0x7fffffff
+#define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)
+
+struct rlimit32 {
+ int rlim_cur;
+ int rlim_max;
+};
+
+extern asmlinkage int sys_getrlimit(unsigned int resource, struct rlimit *rlim);
+
+asmlinkage int
+sys32_getrlimit(unsigned int resource, struct rlimit32 *rlim)
+{
+ struct rlimit r;
+ int ret;
+ mm_segment_t old_fs = get_fs ();
+
+ set_fs (KERNEL_DS);
+ ret = sys_getrlimit(resource, &r);
+ set_fs (old_fs);
+ if (!ret) {
+ ret = put_user (RESOURCE32(r.rlim_cur), &rlim->rlim_cur);
+ ret |= __put_user (RESOURCE32(r.rlim_max), &rlim->rlim_max);
+ }
+ return ret;
+}
+
+extern asmlinkage int sys_setrlimit(unsigned int resource, struct rlimit *rlim);
+
+asmlinkage int
+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 (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;
+}
+
+/* Argument list sizes for sys_socketcall */
+#define AL(x) ((x) * sizeof(u32))
+static unsigned char nas[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
+ AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
+ AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)};
+#undef AL
+
+extern asmlinkage int sys_bind(int fd, struct sockaddr *umyaddr, int addrlen);
+extern asmlinkage int sys_connect(int fd, struct sockaddr *uservaddr,
+ int addrlen);
+extern asmlinkage int sys_accept(int fd, struct sockaddr *upeer_sockaddr,
+ int *upeer_addrlen);
+extern asmlinkage int sys_getsockname(int fd, struct sockaddr *usockaddr,
+ int *usockaddr_len);
+extern asmlinkage int sys_getpeername(int fd, struct sockaddr *usockaddr,
+ int *usockaddr_len);
+extern asmlinkage int sys_send(int fd, void *buff, size_t len, unsigned flags);
+extern asmlinkage int sys_sendto(int fd, u32 buff, __kernel_size_t32 len,
+ unsigned flags, u32 addr, int addr_len);
+extern asmlinkage int sys_recv(int fd, void *ubuf, size_t size, unsigned flags);
+extern asmlinkage int sys_recvfrom(int fd, u32 ubuf, __kernel_size_t32 size,
+ unsigned flags, u32 addr, u32 addr_len);
+extern asmlinkage int sys_setsockopt(int fd, int level, int optname,
+ char *optval, int optlen);
+extern asmlinkage int sys_getsockopt(int fd, int level, int optname,
+ u32 optval, u32 optlen);
+
+extern asmlinkage int sys_socket(int family, int type, int protocol);
+extern asmlinkage int sys_socketpair(int family, int type, int protocol,
+ int usockvec[2]);
+extern asmlinkage int sys_shutdown(int fd, int how);
+extern asmlinkage int sys_listen(int fd, int backlog);
+
+asmlinkage int sys32_socketcall(int call, u32 *args)
+{
+ int i, ret;
+ u32 a[6];
+ u32 a0,a1;
+
+ if (call<SYS_SOCKET||call>SYS_RECVMSG)
+ return -EINVAL;
+ if (copy_from_user(a, args, nas[call]))
+ return -EFAULT;
+ a0=a[0];
+ a1=a[1];
+
+ switch(call)
+ {
+ case SYS_SOCKET:
+ ret = sys_socket(a0, a1, a[2]);
+ break;
+ case SYS_BIND:
+ ret = sys_bind(a0, (struct sockaddr *)A(a1), a[2]);
+ break;
+ case SYS_CONNECT:
+ ret = sys_connect(a0, (struct sockaddr *)A(a1), a[2]);
+ break;
+ case SYS_LISTEN:
+ ret = sys_listen(a0, a1);
+ break;
+ case SYS_ACCEPT:
+ ret = sys_accept(a0, (struct sockaddr *)A(a1),
+ (int *)A(a[2]));
+ break;
+ case SYS_GETSOCKNAME:
+ ret = sys_getsockname(a0, (struct sockaddr *)A(a1),
+ (int *)A(a[2]));
+ break;
+ case SYS_GETPEERNAME:
+ ret = sys_getpeername(a0, (struct sockaddr *)A(a1),
+ (int *)A(a[2]));
+ break;
+ case SYS_SOCKETPAIR:
+ ret = sys_socketpair(a0, a1, a[2], (int *)A(a[3]));
+ break;
+ case SYS_SEND:
+ ret = sys_send(a0, (void *)A(a1), a[2], a[3]);
+ break;
+ case SYS_SENDTO:
+ ret = sys_sendto(a0, a1, a[2], a[3], a[4], a[5]);
+ break;
+ case SYS_RECV:
+ ret = sys_recv(a0, (void *)A(a1), a[2], a[3]);
+ break;
+ case SYS_RECVFROM:
+ ret = sys_recvfrom(a0, a1, a[2], a[3], a[4], a[5]);
+ break;
+ case SYS_SHUTDOWN:
+ ret = sys_shutdown(a0,a1);
+ break;
+ case SYS_SETSOCKOPT:
+ ret = sys_setsockopt(a0, a1, a[2], (char *)A(a[3]),
+ a[4]);
+ break;
+ case SYS_GETSOCKOPT:
+ ret = sys_getsockopt(a0, a1, a[2], a[3], a[4]);
+ break;
+ case SYS_SENDMSG:
+ ret = sys32_sendmsg(a0, (struct msghdr32 *)A(a1),
+ a[2]);
+ break;
+ case SYS_RECVMSG:
+ ret = sys32_recvmsg(a0, (struct msghdr32 *)A(a1),
+ a[2]);
+ break;
+ default:
+ ret = EINVAL;
+ break;
+ }
+ return ret;
+}
+
+/*
+ * Declare the IA32 version of the msghdr
+ */
+
+struct msghdr32 {
+ unsigned int msg_name; /* Socket name */
+ int msg_namelen; /* Length of name */
+ unsigned int msg_iov; /* Data blocks */
+ unsigned int msg_iovlen; /* Number of blocks */
+ unsigned int msg_control; /* Per protocol magic (eg BSD file descriptor passing) */
+ unsigned int msg_controllen; /* Length of cmsg list */
+ unsigned msg_flags;
+};
+
+static inline int
+shape_msg(struct msghdr *mp, struct msghdr32 *mp32)
+{
+ unsigned int i;
+
+ if (!access_ok(VERIFY_READ, mp32, sizeof(*mp32)))
+ return(-EFAULT);
+ __get_user(i, &mp32->msg_name);
+ mp->msg_name = (void *)i;
+ __get_user(mp->msg_namelen, &mp32->msg_namelen);
+ __get_user(i, &mp32->msg_iov);
+ mp->msg_iov = (struct iov *)i;
+ __get_user(mp->msg_iovlen, &mp32->msg_iovlen);
+ __get_user(i, &mp32->msg_control);
+ mp->msg_control = (void *)i;
+ __get_user(mp->msg_controllen, &mp32->msg_controllen);
+ __get_user(mp->msg_flags, &mp32->msg_flags);
+ return(0);
+}
+
+/*
+ * Verify & re-shape IA32 iovec. The caller must ensure that the
+ * iovec is big enough to hold the re-shaped message iovec.
+ *
+ * Save time not doing verify_area. copy_*_user will make this work
+ * in any case.
+ *
+ * Don't need to check the total size for overflow (cf net/core/iovec.c),
+ * 32-bit sizes can't overflow a 64-bit count.
+ */
+
+static inline int
+verify_iovec32(struct msghdr *m, struct iovec *iov, char *address, int mode)
+{
+ int size, err, ct;
+ struct iovec32 *iov32;
+
+ if(m->msg_namelen)
+ {
+ if(mode==VERIFY_READ)
+ {
+ err=move_addr_to_kernel(m->msg_name, m->msg_namelen, address);
+ if(err<0)
+ goto out;
+ }
+
+ m->msg_name = address;
+ } else
+ m->msg_name = NULL;
+
+ err = -EFAULT;
+ size = m->msg_iovlen * sizeof(struct iovec32);
+ if (copy_from_user(iov, m->msg_iov, size))
+ goto out;
+ m->msg_iov=iov;
+
+ err = 0;
+ iov32 = (struct iovec32 *)iov;
+ for (ct = m->msg_iovlen; ct-- > 0; ) {
+ iov[ct].iov_len = (__kernel_size_t)iov32[ct].iov_len;
+ iov[ct].iov_base = (void *)iov32[ct].iov_base;
+ err += iov[ct].iov_len;
+ }
+out:
+ return err;
+}
+
+extern __inline__ void
+sockfd_put(struct socket *sock)
+{
+ fput(sock->file);
+}
+
+/* XXX This really belongs in some header file... -DaveM */
+#define MAX_SOCK_ADDR 128 /* 108 for Unix domain -
+ 16 for IP, 16 for IPX,
+ 24 for IPv6,
+ about 80 for AX.25 */
+
+extern struct socket *sockfd_lookup(int fd, int *err);
+
+/*
+ * BSD sendmsg interface
+ */
+
+asmlinkage int sys32_sendmsg(int fd, struct msghdr32 *msg, unsigned flags)
+{
+ struct socket *sock;
+ char address[MAX_SOCK_ADDR];
+ struct iovec iovstack[UIO_FASTIOV], *iov = iovstack;
+ unsigned char ctl[sizeof(struct cmsghdr) + 20]; /* 20 is size of ipv6_pktinfo */
+ unsigned char *ctl_buf = ctl;
+ struct msghdr msg_sys;
+ int err, ctl_len, iov_size, total_len;
+
+ err = -EFAULT;
+ if (shape_msg(&msg_sys, msg))
+ goto out;
+
+ sock = sockfd_lookup(fd, &err);
+ if (!sock)
+ goto out;
+
+ /* do not move before msg_sys is valid */
+ err = -EINVAL;
+ if (msg_sys.msg_iovlen > UIO_MAXIOV)
+ goto out_put;
+
+ /* Check whether to allocate the iovec area*/
+ err = -ENOMEM;
+ iov_size = msg_sys.msg_iovlen * sizeof(struct iovec32);
+ if (msg_sys.msg_iovlen > UIO_FASTIOV) {
+ iov = sock_kmalloc(sock->sk, iov_size, GFP_KERNEL);
+ if (!iov)
+ goto out_put;
+ }
+
+ /* This will also move the address data into kernel space */
+ err = verify_iovec32(&msg_sys, iov, address, VERIFY_READ);
+ if (err < 0)
+ goto out_freeiov;
+ total_len = err;
+
+ err = -ENOBUFS;
+
+ if (msg_sys.msg_controllen > INT_MAX)
+ goto out_freeiov;
+ ctl_len = msg_sys.msg_controllen;
+ if (ctl_len)
+ {
+ if (ctl_len > sizeof(ctl))
+ {
+ err = -ENOBUFS;
+ ctl_buf = sock_kmalloc(sock->sk, ctl_len, GFP_KERNEL);
+ if (ctl_buf == NULL)
+ goto out_freeiov;
+ }
+ err = -EFAULT;
+ if (copy_from_user(ctl_buf, msg_sys.msg_control, ctl_len))
+ goto out_freectl;
+ msg_sys.msg_control = ctl_buf;
+ }
+ msg_sys.msg_flags = flags;
+
+ if (sock->file->f_flags & O_NONBLOCK)
+ msg_sys.msg_flags |= MSG_DONTWAIT;
+ err = sock_sendmsg(sock, &msg_sys, total_len);
+
+out_freectl:
+ if (ctl_buf != ctl)
+ sock_kfree_s(sock->sk, ctl_buf, ctl_len);
+out_freeiov:
+ if (iov != iovstack)
+ sock_kfree_s(sock->sk, iov, iov_size);
+out_put:
+ sockfd_put(sock);
+out:
+ return err;
+}
+
+/*
+ * BSD recvmsg interface
+ */
+
+asmlinkage int sys32_recvmsg(int fd, struct msghdr32 *msg, unsigned int flags)
+{
+ struct socket *sock;
+ struct iovec iovstack[UIO_FASTIOV];
+ struct iovec *iov=iovstack;
+ struct msghdr msg_sys;
+ unsigned long cmsg_ptr;
+ int err, iov_size, total_len, len;
+
+ /* kernel mode address */
+ char addr[MAX_SOCK_ADDR];
+
+ /* user mode address pointers */
+ struct sockaddr *uaddr;
+ int *uaddr_len;
+
+ err=-EFAULT;
+ if (shape_msg(&msg_sys, msg))
+ goto out;
+
+ sock = sockfd_lookup(fd, &err);
+ if (!sock)
+ goto out;
+
+ err = -EINVAL;
+ if (msg_sys.msg_iovlen > UIO_MAXIOV)
+ goto out_put;
+
+ /* Check whether to allocate the iovec area*/
+ err = -ENOMEM;
+ iov_size = msg_sys.msg_iovlen * sizeof(struct iovec);
+ if (msg_sys.msg_iovlen > UIO_FASTIOV) {
+ iov = sock_kmalloc(sock->sk, iov_size, GFP_KERNEL);
+ if (!iov)
+ goto out_put;
+ }
+
+ /*
+ * Save the user-mode address (verify_iovec will change the
+ * kernel msghdr to use the kernel address space)
+ */
+
+ uaddr = msg_sys.msg_name;
+ uaddr_len = &msg->msg_namelen;
+ err = verify_iovec32(&msg_sys, iov, addr, VERIFY_WRITE);
+ if (err < 0)
+ goto out_freeiov;
+ total_len=err;
+
+ cmsg_ptr = (unsigned long)msg_sys.msg_control;
+ msg_sys.msg_flags = 0;
+
+ if (sock->file->f_flags & O_NONBLOCK)
+ flags |= MSG_DONTWAIT;
+ err = sock_recvmsg(sock, &msg_sys, total_len, flags);
+ if (err < 0)
+ goto out_freeiov;
+ len = err;
+
+ if (uaddr != NULL) {
+ err = move_addr_to_user(addr, msg_sys.msg_namelen, uaddr, uaddr_len);
+ if (err < 0)
+ goto out_freeiov;
+ }
+ err = __put_user(msg_sys.msg_flags, &msg->msg_flags);
+ if (err)
+ goto out_freeiov;
+ err = __put_user((unsigned long)msg_sys.msg_control-cmsg_ptr,
+ &msg->msg_controllen);
+ if (err)
+ goto out_freeiov;
+ err = len;
+
+out_freeiov:
+ if (iov != iovstack)
+ sock_kfree_s(sock->sk, iov, iov_size);
+out_put:
+ sockfd_put(sock);
+out:
+ return err;
+}
+
+/*
+ * sys32_ipc() is the de-multiplexer for the SysV IPC calls in 32bit emulation..
+ *
+ * This is really horribly ugly.
+ */
+
+struct msgbuf32 { s32 mtype; char mtext[1]; };
+
+struct ipc_perm32
+{
+ key_t key;
+ __kernel_uid_t32 uid;
+ __kernel_gid_t32 gid;
+ __kernel_uid_t32 cuid;
+ __kernel_gid_t32 cgid;
+ __kernel_mode_t32 mode;
+ unsigned short seq;
+};
+
+struct semid_ds32 {
+ struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */
+ __kernel_time_t32 sem_otime; /* last semop time */
+ __kernel_time_t32 sem_ctime; /* last change time */
+ u32 sem_base; /* ptr to first semaphore in array */
+ u32 sem_pending; /* pending operations to be processed */
+ u32 sem_pending_last; /* last pending operation */
+ u32 undo; /* undo requests on this array */
+ unsigned short sem_nsems; /* no. of semaphores in array */
+};
+
+struct msqid_ds32
+{
+ struct ipc_perm32 msg_perm;
+ u32 msg_first;
+ u32 msg_last;
+ __kernel_time_t32 msg_stime;
+ __kernel_time_t32 msg_rtime;
+ __kernel_time_t32 msg_ctime;
+ u32 wwait;
+ u32 rwait;
+ unsigned short msg_cbytes;
+ unsigned short msg_qnum;
+ unsigned short msg_qbytes;
+ __kernel_ipc_pid_t32 msg_lspid;
+ __kernel_ipc_pid_t32 msg_lrpid;
+};
+
+struct shmid_ds32 {
+ struct ipc_perm32 shm_perm;
+ int shm_segsz;
+ __kernel_time_t32 shm_atime;
+ __kernel_time_t32 shm_dtime;
+ __kernel_time_t32 shm_ctime;
+ __kernel_ipc_pid_t32 shm_cpid;
+ __kernel_ipc_pid_t32 shm_lpid;
+ unsigned short shm_nattch;
+};
+
+#define IPCOP_MASK(__x) (1UL << (__x))
+
+static int
+do_sys32_semctl(int first, int second, int third, void *uptr)
+{
+ union semun fourth;
+ u32 pad;
+ int err = -EINVAL;
+
+ if (!uptr)
+ goto out;
+ err = -EFAULT;
+ if (get_user (pad, (u32 *)uptr))
+ goto out;
+ if(third == SETVAL)
+ fourth.val = (int)pad;
+ else
+ fourth.__pad = (void *)A(pad);
+ if (IPCOP_MASK (third) &
+ (IPCOP_MASK (IPC_INFO) | IPCOP_MASK (SEM_INFO) |
+ IPCOP_MASK (GETVAL) | IPCOP_MASK (GETPID) |
+ IPCOP_MASK (GETNCNT) | IPCOP_MASK (GETZCNT) |
+ IPCOP_MASK (GETALL) | IPCOP_MASK (SETALL) |
+ IPCOP_MASK (IPC_RMID))) {
+ err = sys_semctl (first, second, third, fourth);
+ } else {
+ struct semid_ds s;
+ struct semid_ds32 *usp = (struct semid_ds32 *)A(pad);
+ mm_segment_t old_fs;
+ int need_back_translation;
+
+ if (third == IPC_SET) {
+ err = get_user (s.sem_perm.uid, &usp->sem_perm.uid);
+ err |= __get_user(s.sem_perm.gid, &usp->sem_perm.gid);
+ err |= __get_user(s.sem_perm.mode, &usp->sem_perm.mode);
+ if (err)
+ goto out;
+ fourth.__pad = &s;
+ }
+ need_back_translation =
+ (IPCOP_MASK (third) &
+ (IPCOP_MASK (SEM_STAT) | IPCOP_MASK (IPC_STAT))) != 0;
+ if (need_back_translation)
+ fourth.__pad = &s;
+ old_fs = get_fs ();
+ set_fs (KERNEL_DS);
+ err = sys_semctl (first, second, third, fourth);
+ set_fs (old_fs);
+ if (need_back_translation) {
+ int err2 = put_user(s.sem_perm.key, &usp->sem_perm.key);
+ err2 |= __put_user(s.sem_perm.uid, &usp->sem_perm.uid);
+ err2 |= __put_user(s.sem_perm.gid, &usp->sem_perm.gid);
+ err2 |= __put_user(s.sem_perm.cuid,
+ &usp->sem_perm.cuid);
+ err2 |= __put_user (s.sem_perm.cgid,
+ &usp->sem_perm.cgid);
+ err2 |= __put_user (s.sem_perm.mode,
+ &usp->sem_perm.mode);
+ err2 |= __put_user (s.sem_perm.seq, &usp->sem_perm.seq);
+ err2 |= __put_user (s.sem_otime, &usp->sem_otime);
+ err2 |= __put_user (s.sem_ctime, &usp->sem_ctime);
+ err2 |= __put_user (s.sem_nsems, &usp->sem_nsems);
+ if (err2) err = -EFAULT;
+ }
+ }
+out:
+ return err;
+}
+
+static int
+do_sys32_msgsnd (int first, int second, int third, void *uptr)
+{
+ struct msgbuf *p = kmalloc (second + sizeof (struct msgbuf)
+ + 4, GFP_USER);
+ struct msgbuf32 *up = (struct msgbuf32 *)uptr;
+ mm_segment_t old_fs;
+ int err;
+
+ if (!p)
+ return -ENOMEM;
+ err = get_user (p->mtype, &up->mtype);
+ err |= __copy_from_user (p->mtext, &up->mtext, second);
+ if (err)
+ goto out;
+ old_fs = get_fs ();
+ set_fs (KERNEL_DS);
+ err = sys_msgsnd (first, p, second, third);
+ set_fs (old_fs);
+out:
+ kfree (p);
+ return err;
+}
+
+static int
+do_sys32_msgrcv (int first, int second, int msgtyp, int third,
+ int version, void *uptr)
+{
+ struct msgbuf32 *up;
+ struct msgbuf *p;
+ mm_segment_t old_fs;
+ int err;
+
+ if (!version) {
+ struct ipc_kludge *uipck = (struct ipc_kludge *)uptr;
+ struct ipc_kludge ipck;
+
+ err = -EINVAL;
+ if (!uptr)
+ goto out;
+ err = -EFAULT;
+ if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge)))
+ goto out;
+ uptr = (void *)A(ipck.msgp);
+ msgtyp = ipck.msgtyp;
+ }
+ err = -ENOMEM;
+ p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER);
+ if (!p)
+ goto out;
+ old_fs = get_fs ();
+ set_fs (KERNEL_DS);
+ err = sys_msgrcv (first, p, second + 4, msgtyp, third);
+ set_fs (old_fs);
+ if (err < 0)
+ goto free_then_out;
+ up = (struct msgbuf32 *)uptr;
+ if (put_user (p->mtype, &up->mtype) ||
+ __copy_to_user (&up->mtext, p->mtext, err))
+ err = -EFAULT;
+free_then_out:
+ kfree (p);
+out:
+ return err;
+}
+
+static int
+do_sys32_msgctl (int first, int second, void *uptr)
+{
+ int err;
+
+ if (IPCOP_MASK (second) &
+ (IPCOP_MASK (IPC_INFO) | IPCOP_MASK (MSG_INFO) |
+ IPCOP_MASK (IPC_RMID))) {
+ err = sys_msgctl (first, second, (struct msqid_ds *)uptr);
+ } else {
+ struct msqid_ds m;
+ struct msqid_ds32 *up = (struct msqid_ds32 *)uptr;
+ mm_segment_t old_fs;
+
+ if (second == IPC_SET) {
+ err = get_user (m.msg_perm.uid, &up->msg_perm.uid);
+ err |= __get_user (m.msg_perm.gid, &up->msg_perm.gid);
+ err |= __get_user (m.msg_perm.mode, &up->msg_perm.mode);
+ err |= __get_user (m.msg_qbytes, &up->msg_qbytes);
+ if (err)
+ goto out;
+ }
+ old_fs = get_fs ();
+ set_fs (KERNEL_DS);
+ err = sys_msgctl (first, second, &m);
+ set_fs (old_fs);
+ if (IPCOP_MASK (second) &
+ (IPCOP_MASK (MSG_STAT) | IPCOP_MASK (IPC_STAT))) {
+ int err2 = put_user (m.msg_perm.key, &up->msg_perm.key);
+ err2 |= __put_user(m.msg_perm.uid, &up->msg_perm.uid);
+ err2 |= __put_user(m.msg_perm.gid, &up->msg_perm.gid);
+ err2 |= __put_user(m.msg_perm.cuid, &up->msg_perm.cuid);
+ err2 |= __put_user(m.msg_perm.cgid, &up->msg_perm.cgid);
+ err2 |= __put_user(m.msg_perm.mode, &up->msg_perm.mode);
+ err2 |= __put_user(m.msg_perm.seq, &up->msg_perm.seq);
+ err2 |= __put_user(m.msg_stime, &up->msg_stime);
+ err2 |= __put_user(m.msg_rtime, &up->msg_rtime);
+ err2 |= __put_user(m.msg_ctime, &up->msg_ctime);
+ err2 |= __put_user(m.msg_cbytes, &up->msg_cbytes);
+ err2 |= __put_user(m.msg_qnum, &up->msg_qnum);
+ err2 |= __put_user(m.msg_qbytes, &up->msg_qbytes);
+ err2 |= __put_user(m.msg_lspid, &up->msg_lspid);
+ err2 |= __put_user(m.msg_lrpid, &up->msg_lrpid);
+ if (err2)
+ err = -EFAULT;
+ }
+ }
+
+out:
+ return err;
+}
+
+static int
+do_sys32_shmat (int first, int second, int third, int version, void *uptr)
+{
+ unsigned long raddr;
+ u32 *uaddr = (u32 *)A((u32)third);
+ int err = -EINVAL;
+
+ if (version == 1)
+ goto out;
+ err = sys_shmat (first, uptr, second, &raddr);
+ if (err)
+ goto out;
+ err = put_user (raddr, uaddr);
+out:
+ return err;
+}
+
+static int
+do_sys32_shmctl (int first, int second, void *uptr)
+{
+ int err;
+
+ if (IPCOP_MASK (second) &
+ (IPCOP_MASK (IPC_INFO) | IPCOP_MASK (SHM_LOCK)
+ | IPCOP_MASK (SHM_UNLOCK) | IPCOP_MASK (IPC_RMID))) {
+ err = sys_shmctl (first, second, (struct shmid_ds *)uptr);
+ } else {
+ struct shmid_ds s;
+ struct shmid_ds32 *up = (struct shmid_ds32 *)uptr;
+ mm_segment_t old_fs;
+
+ if (second == IPC_SET) {
+ err = get_user (s.shm_perm.uid, &up->shm_perm.uid);
+ err |= __get_user (s.shm_perm.gid, &up->shm_perm.gid);
+ err |= __get_user (s.shm_perm.mode, &up->shm_perm.mode);
+ if (err)
+ goto out;
+ }
+ old_fs = get_fs ();
+ set_fs (KERNEL_DS);
+ err = sys_shmctl (first, second, &s);
+ set_fs (old_fs);
+ if (err < 0)
+ goto out;
+
+ /* Mask it even in this case so it becomes a CSE. */
+ if (second == SHM_INFO) {
+ struct shm_info32 {
+ int used_ids;
+ u32 shm_tot, shm_rss, shm_swp;
+ u32 swap_attempts, swap_successes;
+ } *uip = (struct shm_info32 *)uptr;
+ struct shm_info *kp = (struct shm_info *)&s;
+ int err2 = put_user (kp->used_ids, &uip->used_ids);
+ err2 |= __put_user (kp->shm_tot, &uip->shm_tot);
+ err2 |= __put_user (kp->shm_rss, &uip->shm_rss);
+ err2 |= __put_user (kp->shm_swp, &uip->shm_swp);
+ err2 |= __put_user (kp->swap_attempts,
+ &uip->swap_attempts);
+ err2 |= __put_user (kp->swap_successes,
+ &uip->swap_successes);
+ if (err2)
+ err = -EFAULT;
+ } else if (IPCOP_MASK (second) &
+ (IPCOP_MASK (SHM_STAT) | IPCOP_MASK (IPC_STAT))) {
+ int err2 = put_user (s.shm_perm.key, &up->shm_perm.key);
+ err2 |= __put_user (s.shm_perm.uid, &up->shm_perm.uid);
+ err2 |= __put_user (s.shm_perm.gid, &up->shm_perm.gid);
+ err2 |= __put_user (s.shm_perm.cuid,
+ &up->shm_perm.cuid);
+ err2 |= __put_user (s.shm_perm.cgid,
+ &up->shm_perm.cgid);
+ err2 |= __put_user (s.shm_perm.mode,
+ &up->shm_perm.mode);
+ err2 |= __put_user (s.shm_perm.seq, &up->shm_perm.seq);
+ err2 |= __put_user (s.shm_atime, &up->shm_atime);
+ err2 |= __put_user (s.shm_dtime, &up->shm_dtime);
+ err2 |= __put_user (s.shm_ctime, &up->shm_ctime);
+ err2 |= __put_user (s.shm_segsz, &up->shm_segsz);
+ err2 |= __put_user (s.shm_nattch, &up->shm_nattch);
+ err2 |= __put_user (s.shm_cpid, &up->shm_cpid);
+ err2 |= __put_user (s.shm_lpid, &up->shm_lpid);
+ if (err2)
+ err = -EFAULT;
+ }
+ }
+out:
+ return err;
+}
+
+asmlinkage int
+sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
+{
+ int version, err;
+
+ lock_kernel();
+ version = call >> 16; /* hack for backward compatibility */
+ call &= 0xffff;
+
+ if (call <= SEMCTL)
+ switch (call) {
+ case SEMOP:
+ /* struct sembuf is the same on 32 and 64bit :)) */
+ err = sys_semop (first, (struct sembuf *)AA(ptr),
+ second);
+ goto out;
+ case SEMGET:
+ err = sys_semget (first, second, third);
+ goto out;
+ case SEMCTL:
+ err = do_sys32_semctl (first, second, third,
+ (void *)AA(ptr));
+ goto out;
+ default:
+ err = -EINVAL;
+ goto out;
+ };
+ if (call <= MSGCTL)
+ switch (call) {
+ case MSGSND:
+ err = do_sys32_msgsnd (first, second, third,
+ (void *)AA(ptr));
+ goto out;
+ case MSGRCV:
+ err = do_sys32_msgrcv (first, second, fifth, third,
+ version, (void *)AA(ptr));
+ goto out;
+ case MSGGET:
+ err = sys_msgget ((key_t) first, second);
+ goto out;
+ case MSGCTL:
+ err = do_sys32_msgctl (first, second, (void *)AA(ptr));
+ goto out;
+ default:
+ err = -EINVAL;
+ goto out;
+ }
+ if (call <= SHMCTL)
+ switch (call) {
+ case SHMAT:
+ err = do_sys32_shmat (first, second, third,
+ version, (void *)AA(ptr));
+ goto out;
+ case SHMDT:
+ err = sys_shmdt ((char *)AA(ptr));
+ goto out;
+ case SHMGET:
+ err = sys_shmget (first, second, third);
+ goto out;
+ case SHMCTL:
+ err = do_sys32_shmctl (first, second, (void *)AA(ptr));
+ goto out;
+ default:
+ err = -EINVAL;
+ goto out;
+ }
+
+ err = -EINVAL;
+
+out:
+ unlock_kernel();
+ return err;
+}
+
+#ifdef NOTYET /* UNTESTED FOR IA64 FROM HERE DOWN */
+
+/* In order to reduce some races, while at the same time doing additional
+ * checking and hopefully speeding things up, we copy filenames to the
+ * kernel data space before using them..
+ *
+ * POSIX.1 2.4: an empty pathname is invalid (ENOENT).
+ */
+static inline int
+do_getname32(const char *filename, char *page)
+{
+ int retval;
+
+ /* 32bit pointer will be always far below TASK_SIZE :)) */
+ retval = strncpy_from_user((char *)page, (char *)filename, PAGE_SIZE);
+ if (retval > 0) {
+ if (retval < PAGE_SIZE)
+ return 0;
+ return -ENAMETOOLONG;
+ } else if (!retval)
+ retval = -ENOENT;
+ return retval;
+}
+
+char *
+getname32(const char *filename)
+{
+ char *tmp, *result;
+
+ result = ERR_PTR(-ENOMEM);
+ tmp = (char *)__get_free_page(GFP_KERNEL);
+ if (tmp) {
+ int retval = do_getname32(filename, tmp);
+
+ result = tmp;
+ if (retval < 0) {
+ putname(tmp);
+ result = ERR_PTR(retval);
+ }
+ }
+ return result;
+}
+
+/* 32-bit timeval and related flotsam. */
+
+extern asmlinkage int sys_ioperm(unsigned long from, unsigned long num, int on);
+
+asmlinkage int
+sys32_ioperm(u32 from, u32 num, int on)
+{
+ return sys_ioperm((unsigned long)from, (unsigned long)num, on);
+}
+
+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_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(put_flock(&f, (struct flock32 *)arg))
+ return -EFAULT;
+ return ret;
+ }
+ default:
+ return sys_fcntl(fd, cmd, (unsigned long)arg);
+ }
+}
+
+struct dqblk32 {
+ __u32 dqb_bhardlimit;
+ __u32 dqb_bsoftlimit;
+ __u32 dqb_curblocks;
+ __u32 dqb_ihardlimit;
+ __u32 dqb_isoftlimit;
+ __u32 dqb_curinodes;
+ __kernel_time_t32 dqb_btime;
+ __kernel_time_t32 dqb_itime;
+};
+
+extern asmlinkage int sys_quotactl(int cmd, const char *special, int id,
+ caddr_t addr);
+
+asmlinkage int
+sys32_quotactl(int cmd, const char *special, int id, unsigned long addr)
+{
+ int cmds = cmd >> SUBCMDSHIFT;
+ int err;
+ struct dqblk d;
+ mm_segment_t old_fs;
+ char *spec;
+
+ switch (cmds) {
+ case Q_GETQUOTA:
+ break;
+ case Q_SETQUOTA:
+ case Q_SETUSE:
+ case Q_SETQLIM:
+ if (copy_from_user (&d, (struct dqblk32 *)addr,
+ sizeof (struct dqblk32)))
+ return -EFAULT;
+ d.dqb_itime = ((struct dqblk32 *)&d)->dqb_itime;
+ d.dqb_btime = ((struct dqblk32 *)&d)->dqb_btime;
+ break;
+ default:
+ return sys_quotactl(cmd, special,
+ id, (caddr_t)addr);
+ }
+ spec = getname32 (special);
+ err = PTR_ERR(spec);
+ if (IS_ERR(spec)) return err;
+ old_fs = get_fs ();
+ set_fs (KERNEL_DS);
+ err = sys_quotactl(cmd, (const char *)spec, id, (caddr_t)&d);
+ set_fs (old_fs);
+ putname (spec);
+ if (cmds == Q_GETQUOTA) {
+ __kernel_time_t b = d.dqb_btime, i = d.dqb_itime;
+ ((struct dqblk32 *)&d)->dqb_itime = i;
+ ((struct dqblk32 *)&d)->dqb_btime = b;
+ if (copy_to_user ((struct dqblk32 *)addr, &d,
+ sizeof (struct dqblk32)))
+ return -EFAULT;
+ }
+ return err;
+}
+
+extern asmlinkage int sys_utime(char * filename, struct utimbuf * times);
+
+struct utimbuf32 {
+ __kernel_time_t32 actime, modtime;
+};
+
+asmlinkage int
+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 (get_user (t.actime, ×->actime) ||
+ __get_user (t.modtime, ×->modtime))
+ return -EFAULT;
+ filenam = getname32 (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;
+}
+
+/*
+ * Ooo, nasty. We need here to frob 32-bit unsigned longs to
+ * 64-bit unsigned longs.
+ */
+
+static inline int
+get_fd_set32(unsigned long n, unsigned long *fdset, u32 *ufdset)
+{
+ if (ufdset) {
+ unsigned long odd;
+
+ if (verify_area(VERIFY_WRITE, ufdset, n*sizeof(u32)))
+ return -EFAULT;
+
+ odd = n & 1UL;
+ n &= ~1UL;
+ while (n) {
+ unsigned long h, l;
+ __get_user(l, ufdset);
+ __get_user(h, ufdset+1);
+ ufdset += 2;
+ *fdset++ = h << 32 | l;
+ n -= 2;
+ }
+ if (odd)
+ __get_user(*fdset, ufdset);
+ } else {
+ /* Tricky, must clear full unsigned long in the
+ * kernel fdset at the end, this makes sure that
+ * actually happens.
+ */
+ memset(fdset, 0, ((n + 1) & ~1)*sizeof(u32));
+ }
+ return 0;
+}
+
+static inline void
+set_fd_set32(unsigned long n, u32 *ufdset, unsigned long *fdset)
+{
+ unsigned long odd;
+
+ if (!ufdset)
+ return;
+
+ odd = n & 1UL;
+ n &= ~1UL;
+ while (n) {
+ unsigned long h, l;
+ l = *fdset++;
+ h = l >> 32;
+ __put_user(l, ufdset);
+ __put_user(h, ufdset+1);
+ ufdset += 2;
+ n -= 2;
+ }
+ if (odd)
+ __put_user(*fdset, ufdset);
+}
+
+extern asmlinkage int sys_sysfs(int option, unsigned long arg1,
+ unsigned long arg2);
+
+asmlinkage int
+sys32_sysfs(int option, u32 arg1, u32 arg2)
+{
+ return sys_sysfs(option, arg1, arg2);
+}
+
+struct ncp_mount_data32 {
+ int version;
+ unsigned int ncp_fd;
+ __kernel_uid_t32 mounted_uid;
+ __kernel_pid_t32 wdog_pid;
+ unsigned char mounted_vol[NCP_VOLNAME_LEN + 1];
+ unsigned int time_out;
+ unsigned int retry_count;
+ unsigned int flags;
+ __kernel_uid_t32 uid;
+ __kernel_gid_t32 gid;
+ __kernel_mode_t32 file_mode;
+ __kernel_mode_t32 dir_mode;
+};
+
+static void *
+do_ncp_super_data_conv(void *raw_data)
+{
+ struct ncp_mount_data *n = (struct ncp_mount_data *)raw_data;
+ struct ncp_mount_data32 *n32 = (struct ncp_mount_data32 *)raw_data;
+
+ n->dir_mode = n32->dir_mode;
+ n->file_mode = n32->file_mode;
+ n->gid = n32->gid;
+ n->uid = n32->uid;
+ memmove (n->mounted_vol, n32->mounted_vol,
+ (sizeof (n32->mounted_vol) + 3 * sizeof (unsigned int)));
+ n->wdog_pid = n32->wdog_pid;
+ n->mounted_uid = n32->mounted_uid;
+ return raw_data;
+}
+
+struct smb_mount_data32 {
+ int version;
+ __kernel_uid_t32 mounted_uid;
+ __kernel_uid_t32 uid;
+ __kernel_gid_t32 gid;
+ __kernel_mode_t32 file_mode;
+ __kernel_mode_t32 dir_mode;
+};
+
+static void *
+do_smb_super_data_conv(void *raw_data)
+{
+ struct smb_mount_data *s = (struct smb_mount_data *)raw_data;
+ struct smb_mount_data32 *s32 = (struct smb_mount_data32 *)raw_data;
+
+ s->version = s32->version;
+ s->mounted_uid = s32->mounted_uid;
+ s->uid = s32->uid;
+ s->gid = s32->gid;
+ s->file_mode = s32->file_mode;
+ s->dir_mode = s32->dir_mode;
+ return raw_data;
+}
+
+static int
+copy_mount_stuff_to_kernel(const void *user, unsigned long *kernel)
+{
+ int i;
+ unsigned long page;
+ struct vm_area_struct *vma;
+
+ *kernel = 0;
+ if(!user)
+ return 0;
+ vma = find_vma(current->mm, (unsigned long)user);
+ if(!vma || (unsigned long)user < vma->vm_start)
+ return -EFAULT;
+ if(!(vma->vm_flags & VM_READ))
+ return -EFAULT;
+ i = vma->vm_end - (unsigned long) user;
+ if(PAGE_SIZE <= (unsigned long) i)
+ i = PAGE_SIZE - 1;
+ if(!(page = __get_free_page(GFP_KERNEL)))
+ return -ENOMEM;
+ if(copy_from_user((void *) page, user, i)) {
+ free_page(page);
+ return -EFAULT;
+ }
+ *kernel = page;
+ return 0;
+}
+
+extern asmlinkage int sys_mount(char * dev_name, char * dir_name, char * type,
+ unsigned long new_flags, void *data);
+
+#define SMBFS_NAME "smbfs"
+#define NCPFS_NAME "ncpfs"
+
+asmlinkage int
+sys32_mount(char *dev_name, char *dir_name, char *type,
+ unsigned long new_flags, u32 data)
+{
+ unsigned long type_page;
+ int err, is_smb, is_ncp;
+
+ if(!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+ is_smb = is_ncp = 0;
+ err = copy_mount_stuff_to_kernel((const void *)type, &type_page);
+ if(err)
+ return err;
+ if(type_page) {
+ is_smb = !strcmp((char *)type_page, SMBFS_NAME);
+ is_ncp = !strcmp((char *)type_page, NCPFS_NAME);
+ }
+ if(!is_smb && !is_ncp) {
+ if(type_page)
+ free_page(type_page);
+ return sys_mount(dev_name, dir_name, type, new_flags,
+ (void *)AA(data));
+ } else {
+ unsigned long dev_page, dir_page, data_page;
+ mm_segment_t old_fs;
+
+ err = copy_mount_stuff_to_kernel((const void *)dev_name,
+ &dev_page);
+ if(err)
+ goto out;
+ err = copy_mount_stuff_to_kernel((const void *)dir_name,
+ &dir_page);
+ if(err)
+ goto dev_out;
+ err = copy_mount_stuff_to_kernel((const void *)AA(data),
+ &data_page);
+ if(err)
+ goto dir_out;
+ if(is_ncp)
+ do_ncp_super_data_conv((void *)data_page);
+ else if(is_smb)
+ do_smb_super_data_conv((void *)data_page);
+ else
+ panic("The problem is here...");
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ err = sys_mount((char *)dev_page, (char *)dir_page,
+ (char *)type_page, new_flags,
+ (void *)data_page);
+ set_fs(old_fs);
+
+ if(data_page)
+ free_page(data_page);
+ dir_out:
+ if(dir_page)
+ free_page(dir_page);
+ dev_out:
+ if(dev_page)
+ free_page(dev_page);
+ out:
+ if(type_page)
+ free_page(type_page);
+ return err;
+ }
+}
+
+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 int sys_sysinfo(struct sysinfo *info);
+
+asmlinkage int
+sys32_sysinfo(struct sysinfo32 *info)
+{
+ struct sysinfo s;
+ int ret, err;
+ mm_segment_t old_fs = get_fs ();
+
+ set_fs (KERNEL_DS);
+ ret = sys_sysinfo(&s);
+ set_fs (old_fs);
+ err = put_user (s.uptime, &info->uptime);
+ err |= __put_user (s.loads[0], &info->loads[0]);
+ err |= __put_user (s.loads[1], &info->loads[1]);
+ err |= __put_user (s.loads[2], &info->loads[2]);
+ err |= __put_user (s.totalram, &info->totalram);
+ err |= __put_user (s.freeram, &info->freeram);
+ err |= __put_user (s.sharedram, &info->sharedram);
+ err |= __put_user (s.bufferram, &info->bufferram);
+ err |= __put_user (s.totalswap, &info->totalswap);
+ err |= __put_user (s.freeswap, &info->freeswap);
+ err |= __put_user (s.procs, &info->procs);
+ if (err)
+ return -EFAULT;
+ return ret;
+}
+
+extern asmlinkage int sys_sched_rr_get_interval(pid_t pid,
+ struct timespec *interval);
+
+asmlinkage int
+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 (put_user (t.tv_sec, &interval->tv_sec) ||
+ __put_user (t.tv_nsec, &interval->tv_nsec))
+ return -EFAULT;
+ return ret;
+}
+
+extern asmlinkage int sys_sigprocmask(int how, old_sigset_t *set,
+ old_sigset_t *oset);
+
+asmlinkage int
+sys32_sigprocmask(int how, old_sigset_t32 *set, old_sigset_t32 *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 int sys_sigpending(old_sigset_t *set);
+
+asmlinkage int
+sys32_sigpending(old_sigset_t32 *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 int sys_rt_sigpending(sigset_t *set, size_t sigsetsize);
+
+asmlinkage int
+sys32_rt_sigpending(sigset_t32 *set, __kernel_size_t32 sigsetsize)
+{
+ sigset_t s;
+ sigset_t32 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(sigset_t32)))
+ 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);
+ /* XXX: Do we need to translate this from ia64 to ia32 traps? */
+ 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);
+ /* XXX: Do we need to translate this from ia32 to ia64 traps? */
+ 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 int
+sys_rt_sigtimedwait(const sigset_t *uthese, siginfo_t *uinfo,
+ const struct timespec *uts, size_t sigsetsize);
+
+asmlinkage int
+sys32_rt_sigtimedwait(sigset_t32 *uthese, siginfo_t32 *uinfo,
+ struct timespec32 *uts, __kernel_size_t32 sigsetsize)
+{
+ sigset_t s;
+ sigset_t32 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(sigset_t32)))
+ 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) {
+ ret = get_user (t.tv_sec, &uts->tv_sec);
+ ret |= __get_user (t.tv_nsec, &uts->tv_nsec);
+ if (ret)
+ 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 int
+sys_rt_sigqueueinfo(int pid, int sig, siginfo_t *uinfo);
+
+asmlinkage int
+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 asmlinkage int sys_setreuid(uid_t ruid, uid_t euid);
+
+asmlinkage int sys32_setreuid(__kernel_uid_t32 ruid, __kernel_uid_t32 euid)
+{
+ uid_t sruid, seuid;
+
+ sruid = (ruid == (__kernel_uid_t32)-1) ? ((uid_t)-1) : ((uid_t)ruid);
+ seuid = (euid == (__kernel_uid_t32)-1) ? ((uid_t)-1) : ((uid_t)euid);
+ return sys_setreuid(sruid, seuid);
+}
+
+extern asmlinkage int sys_setresuid(uid_t ruid, uid_t euid, uid_t suid);
+
+asmlinkage int
+sys32_setresuid(__kernel_uid_t32 ruid, __kernel_uid_t32 euid,
+ __kernel_uid_t32 suid)
+{
+ uid_t sruid, seuid, ssuid;
+
+ sruid = (ruid == (__kernel_uid_t32)-1) ? ((uid_t)-1) : ((uid_t)ruid);
+ seuid = (euid == (__kernel_uid_t32)-1) ? ((uid_t)-1) : ((uid_t)euid);
+ ssuid = (suid == (__kernel_uid_t32)-1) ? ((uid_t)-1) : ((uid_t)suid);
+ return sys_setresuid(sruid, seuid, ssuid);
+}
+
+extern asmlinkage int sys_getresuid(uid_t *ruid, uid_t *euid, uid_t *suid);
+
+asmlinkage int
+sys32_getresuid(__kernel_uid_t32 *ruid, __kernel_uid_t32 *euid,
+ __kernel_uid_t32 *suid)
+{
+ uid_t a, b, c;
+ int ret;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_getresuid(&a, &b, &c);
+ set_fs (old_fs);
+ if (put_user (a, ruid) || put_user (b, euid) || put_user (c, suid))
+ return -EFAULT;
+ return ret;
+}
+
+extern asmlinkage int sys_setregid(gid_t rgid, gid_t egid);
+
+asmlinkage int
+sys32_setregid(__kernel_gid_t32 rgid, __kernel_gid_t32 egid)
+{
+ gid_t srgid, segid;
+
+ srgid = (rgid == (__kernel_gid_t32)-1) ? ((gid_t)-1) : ((gid_t)rgid);
+ segid = (egid == (__kernel_gid_t32)-1) ? ((gid_t)-1) : ((gid_t)egid);
+ return sys_setregid(srgid, segid);
+}
+
+extern asmlinkage int sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid);
+
+asmlinkage int
+sys32_setresgid(__kernel_gid_t32 rgid, __kernel_gid_t32 egid,
+ __kernel_gid_t32 sgid)
+{
+ gid_t srgid, segid, ssgid;
+
+ srgid = (rgid == (__kernel_gid_t32)-1) ? ((gid_t)-1) : ((gid_t)rgid);
+ segid = (egid == (__kernel_gid_t32)-1) ? ((gid_t)-1) : ((gid_t)egid);
+ ssgid = (sgid == (__kernel_gid_t32)-1) ? ((gid_t)-1) : ((gid_t)sgid);
+ return sys_setresgid(srgid, segid, ssgid);
+}
+
+extern asmlinkage int sys_getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid);
+
+asmlinkage int
+sys32_getresgid(__kernel_gid_t32 *rgid, __kernel_gid_t32 *egid,
+ __kernel_gid_t32 *sgid)
+{
+ gid_t a, b, c;
+ int ret;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_getresgid(&a, &b, &c);
+ set_fs (old_fs);
+ if (!ret) {
+ ret = put_user (a, rgid);
+ ret |= put_user (b, egid);
+ ret |= put_user (c, sgid);
+ }
+ 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 asmlinkage long sys_times(struct tms * tbuf);
+
+asmlinkage long
+sys32_times(struct tms32 *tbuf)
+{
+ struct tms t;
+ long ret;
+ mm_segment_t old_fs = get_fs ();
+ int err;
+
+ set_fs (KERNEL_DS);
+ ret = sys_times(tbuf ? &t : NULL);
+ set_fs (old_fs);
+ if (tbuf) {
+ err = put_user (t.tms_utime, &tbuf->tms_utime);
+ err |= __put_user (t.tms_stime, &tbuf->tms_stime);
+ err |= __put_user (t.tms_cutime, &tbuf->tms_cutime);
+ err |= __put_user (t.tms_cstime, &tbuf->tms_cstime);
+ if (err)
+ ret = -EFAULT;
+ }
+ return ret;
+}
+
+extern asmlinkage int sys_getgroups(int gidsetsize, gid_t *grouplist);
+
+asmlinkage int
+sys32_getgroups(int gidsetsize, __kernel_gid_t32 *grouplist)
+{
+ gid_t gl[NGROUPS];
+ int ret, i;
+ mm_segment_t old_fs = get_fs ();
+
+ set_fs (KERNEL_DS);
+ ret = sys_getgroups(gidsetsize, gl);
+ set_fs (old_fs);
+ if (gidsetsize && ret > 0 && ret <= NGROUPS)
+ for (i = 0; i < ret; i++, grouplist++)
+ if (__put_user (gl[i], grouplist))
+ return -EFAULT;
+ return ret;
+}
+
+extern asmlinkage int sys_setgroups(int gidsetsize, gid_t *grouplist);
+
+asmlinkage int
+sys32_setgroups(int gidsetsize, __kernel_gid_t32 *grouplist)
+{
+ gid_t gl[NGROUPS];
+ int ret, i;
+ mm_segment_t old_fs = get_fs ();
+
+ if ((unsigned) gidsetsize > NGROUPS)
+ return -EINVAL;
+ for (i = 0; i < gidsetsize; i++, grouplist++)
+ if (__get_user (gl[i], grouplist))
+ return -EFAULT;
+ set_fs (KERNEL_DS);
+ ret = sys_setgroups(gidsetsize, gl);
+ set_fs (old_fs);
+ return ret;
+}
+
+extern asmlinkage int
+sys_getrusage(int who, struct rusage *ru);
+
+asmlinkage int
+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;
+}
+
+
+/* XXX These as well... */
+extern __inline__ struct socket *
+socki_lookup(struct inode *inode)
+{
+ return &inode->u.socket_i;
+}
+
+extern __inline__ struct socket *
+sockfd_lookup(int fd, int *err)
+{
+ struct file *file;
+ struct inode *inode;
+
+ if (!(file = fget(fd)))
+ {
+ *err = -EBADF;
+ return NULL;
+ }
+
+ inode = file->f_dentry->d_inode;
+ if (!inode || !inode->i_sock || !socki_lookup(inode))
+ {
+ *err = -ENOTSOCK;
+ fput(file);
+ return NULL;
+ }
+
+ return socki_lookup(inode);
+}
+
+struct msghdr32 {
+ u32 msg_name;
+ int msg_namelen;
+ u32 msg_iov;
+ __kernel_size_t32 msg_iovlen;
+ u32 msg_control;
+ __kernel_size_t32 msg_controllen;
+ unsigned msg_flags;
+};
+
+struct cmsghdr32 {
+ __kernel_size_t32 cmsg_len;
+ int cmsg_level;
+ int cmsg_type;
+};
+
+/* Bleech... */
+#define __CMSG32_NXTHDR(ctl, len, cmsg, cmsglen) \
+ __cmsg32_nxthdr((ctl),(len),(cmsg),(cmsglen))
+#define CMSG32_NXTHDR(mhdr, cmsg, cmsglen) \
+ cmsg32_nxthdr((mhdr), (cmsg), (cmsglen))
+
+#define CMSG32_ALIGN(len) ( ((len)+sizeof(int)-1) & ~(sizeof(int)-1) )
+
+#define CMSG32_DATA(cmsg) \
+ ((void *)((char *)(cmsg) + CMSG32_ALIGN(sizeof(struct cmsghdr32))))
+#define CMSG32_SPACE(len) \
+ (CMSG32_ALIGN(sizeof(struct cmsghdr32)) + CMSG32_ALIGN(len))
+#define CMSG32_LEN(len) (CMSG32_ALIGN(sizeof(struct cmsghdr32)) + (len))
+
+#define __CMSG32_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr32) ? \
+ (struct cmsghdr32 *)(ctl) : \
+ (struct cmsghdr32 *)NULL)
+#define CMSG32_FIRSTHDR(msg) \
+ __CMSG32_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen)
+
+__inline__ struct cmsghdr32 *
+__cmsg32_nxthdr(void *__ctl, __kernel_size_t __size,
+ struct cmsghdr32 *__cmsg, int __cmsg_len)
+{
+ struct cmsghdr32 * __ptr;
+
+ __ptr = (struct cmsghdr32 *)(((unsigned char *) __cmsg) +
+ CMSG32_ALIGN(__cmsg_len));
+ if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size)
+ return NULL;
+
+ return __ptr;
+}
+
+__inline__ struct cmsghdr32 *
+cmsg32_nxthdr (struct msghdr *__msg, struct cmsghdr32 *__cmsg, int __cmsg_len)
+{
+ return __cmsg32_nxthdr(__msg->msg_control, __msg->msg_controllen,
+ __cmsg, __cmsg_len);
+}
+
+static inline int
+iov_from_user32_to_kern(struct iovec *kiov, struct iovec32 *uiov32, int niov)
+{
+ int tot_len = 0;
+
+ while(niov > 0) {
+ u32 len, buf;
+
+ if(get_user(len, &uiov32->iov_len) ||
+ get_user(buf, &uiov32->iov_base)) {
+ tot_len = -EFAULT;
+ break;
+ }
+ tot_len += len;
+ kiov->iov_base = (void *)A(buf);
+ kiov->iov_len = (__kernel_size_t) len;
+ uiov32++;
+ kiov++;
+ niov--;
+ }
+ return tot_len;
+}
+
+static inline int
+msghdr_from_user32_to_kern(struct msghdr *kmsg, struct msghdr32 *umsg)
+{
+ u32 tmp1, tmp2, tmp3;
+ int err;
+
+ err = get_user(tmp1, &umsg->msg_name);
+ err |= __get_user(tmp2, &umsg->msg_iov);
+ err |= __get_user(tmp3, &umsg->msg_control);
+ if (err)
+ return -EFAULT;
+
+ kmsg->msg_name = (void *)A(tmp1);
+ kmsg->msg_iov = (struct iovec *)A(tmp2);
+ kmsg->msg_control = (void *)A(tmp3);
+
+ err = get_user(kmsg->msg_namelen, &umsg->msg_namelen);
+ err |= get_user(kmsg->msg_iovlen, &umsg->msg_iovlen);
+ err |= get_user(kmsg->msg_controllen, &umsg->msg_controllen);
+ err |= get_user(kmsg->msg_flags, &umsg->msg_flags);
+
+ return err;
+}
+
+/* I've named the args so it is easy to tell whose space the pointers are in. */
+static int
+verify_iovec32(struct msghdr *kern_msg, struct iovec *kern_iov,
+ char *kern_address, int mode)
+{
+ int tot_len;
+
+ if(kern_msg->msg_namelen) {
+ if(mode==VERIFY_READ) {
+ int err = move_addr_to_kernel(kern_msg->msg_name,
+ kern_msg->msg_namelen,
+ kern_address);
+ if(err < 0)
+ return err;
+ }
+ kern_msg->msg_name = kern_address;
+ } else
+ kern_msg->msg_name = NULL;
+
+ if(kern_msg->msg_iovlen > UIO_FASTIOV) {
+ kern_iov = kmalloc(kern_msg->msg_iovlen * sizeof(struct iovec),
+ GFP_KERNEL);
+ if(!kern_iov)
+ return -ENOMEM;
+ }
+
+ tot_len = iov_from_user32_to_kern(kern_iov,
+ (struct iovec32 *)kern_msg->msg_iov,
+ kern_msg->msg_iovlen);
+ if(tot_len >= 0)
+ kern_msg->msg_iov = kern_iov;
+ else if(kern_msg->msg_iovlen > UIO_FASTIOV)
+ kfree(kern_iov);
+
+ return tot_len;
+}
+
+/* There is a lot of hair here because the alignment rules (and
+ * thus placement) of cmsg headers and length are different for
+ * 32-bit apps. -DaveM
+ */
+static int
+cmsghdr_from_user32_to_kern(struct msghdr *kmsg, unsigned char *stackbuf,
+ int stackbuf_size)
+{
+ struct cmsghdr32 *ucmsg;
+ struct cmsghdr *kcmsg, *kcmsg_base;
+ __kernel_size_t32 ucmlen;
+ __kernel_size_t kcmlen, tmp;
+
+ kcmlen = 0;
+ kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf;
+ ucmsg = CMSG32_FIRSTHDR(kmsg);
+ while(ucmsg != NULL) {
+ if(get_user(ucmlen, &ucmsg->cmsg_len))
+ return -EFAULT;
+
+ /* Catch bogons. */
+ if(CMSG32_ALIGN(ucmlen) <
+ CMSG32_ALIGN(sizeof(struct cmsghdr32)))
+ return -EINVAL;
+ if((unsigned long)(((char *)ucmsg - (char *)kmsg->msg_control)
+ + ucmlen) > kmsg->msg_controllen)
+ return -EINVAL;
+
+ tmp = ((ucmlen - CMSG32_ALIGN(sizeof(*ucmsg))) +
+ CMSG_ALIGN(sizeof(struct cmsghdr)));
+ kcmlen += tmp;
+ ucmsg = CMSG32_NXTHDR(kmsg, ucmsg, ucmlen);
+ }
+ if(kcmlen == 0)
+ return -EINVAL;
+
+ /* The kcmlen holds the 64-bit version of the control length.
+ * It may not be modified as we do not stick it into the kmsg
+ * until we have successfully copied over all of the data
+ * from the user.
+ */
+ if(kcmlen > stackbuf_size)
+ kcmsg_base = kcmsg = kmalloc(kcmlen, GFP_KERNEL);
+ if(kcmsg == NULL)
+ return -ENOBUFS;
+
+ /* Now copy them over neatly. */
+ memset(kcmsg, 0, kcmlen);
+ ucmsg = CMSG32_FIRSTHDR(kmsg);
+ while(ucmsg != NULL) {
+ __get_user(ucmlen, &ucmsg->cmsg_len);
+ tmp = ((ucmlen - CMSG32_ALIGN(sizeof(*ucmsg))) +
+ CMSG_ALIGN(sizeof(struct cmsghdr)));
+ kcmsg->cmsg_len = tmp;
+ __get_user(kcmsg->cmsg_level, &ucmsg->cmsg_level);
+ __get_user(kcmsg->cmsg_type, &ucmsg->cmsg_type);
+
+ /* Copy over the data. */
+ if(copy_from_user(CMSG_DATA(kcmsg),
+ CMSG32_DATA(ucmsg),
+ (ucmlen - CMSG32_ALIGN(sizeof(*ucmsg)))))
+ goto out_free_efault;
+
+ /* Advance. */
+ kcmsg = (struct cmsghdr *)((char *)kcmsg + CMSG_ALIGN(tmp));
+ ucmsg = CMSG32_NXTHDR(kmsg, ucmsg, ucmlen);
+ }
+
+ /* Ok, looks like we made it. Hook it up and return success. */
+ kmsg->msg_control = kcmsg_base;
+ kmsg->msg_controllen = kcmlen;
+ return 0;
+
+out_free_efault:
+ if(kcmsg_base != (struct cmsghdr *)stackbuf)
+ kfree(kcmsg_base);
+ return -EFAULT;
+}
+
+static void
+put_cmsg32(struct msghdr *kmsg, int level, int type, int len, void *data)
+{
+ struct cmsghdr32 *cm = (struct cmsghdr32 *) kmsg->msg_control;
+ struct cmsghdr32 cmhdr;
+ int cmlen = CMSG32_LEN(len);
+
+ if(cm == NULL || kmsg->msg_controllen < sizeof(*cm)) {
+ kmsg->msg_flags |= MSG_CTRUNC;
+ return;
+ }
+
+ if(kmsg->msg_controllen < cmlen) {
+ kmsg->msg_flags |= MSG_CTRUNC;
+ cmlen = kmsg->msg_controllen;
+ }
+ cmhdr.cmsg_level = level;
+ cmhdr.cmsg_type = type;
+ cmhdr.cmsg_len = cmlen;
+
+ if(copy_to_user(cm, &cmhdr, sizeof cmhdr))
+ return;
+ if(copy_to_user(CMSG32_DATA(cm), data,
+ cmlen - sizeof(struct cmsghdr32)))
+ return;
+ cmlen = CMSG32_SPACE(len);
+ kmsg->msg_control += cmlen;
+ kmsg->msg_controllen -= cmlen;
+}
+
+static void scm_detach_fds32(struct msghdr *kmsg, struct scm_cookie *scm)
+{
+ struct cmsghdr32 *cm = (struct cmsghdr32 *) kmsg->msg_control;
+ int fdmax = (kmsg->msg_controllen - sizeof(struct cmsghdr32))
+ / sizeof(int);
+ int fdnum = scm->fp->count;
+ struct file **fp = scm->fp->fp;
+ int *cmfptr;
+ int err = 0, i;
+
+ if (fdnum < fdmax)
+ fdmax = fdnum;
+
+ for (i = 0, cmfptr = (int *) CMSG32_DATA(cm);
+ i < fdmax;
+ i++, cmfptr++) {
+ int new_fd;
+ err = get_unused_fd();
+ if (err < 0)
+ break;
+ new_fd = err;
+ err = put_user(new_fd, cmfptr);
+ if (err) {
+ put_unused_fd(new_fd);
+ break;
+ }
+ /* Bump the usage count and install the file. */
+ fp[i]->f_count++;
+ current->files->fd[new_fd] = fp[i];
+ }
+
+ if (i > 0) {
+ int cmlen = CMSG32_LEN(i * sizeof(int));
+ if (!err)
+ err = put_user(SOL_SOCKET, &cm->cmsg_level);
+ if (!err)
+ err = put_user(SCM_RIGHTS, &cm->cmsg_type);
+ if (!err)
+ err = put_user(cmlen, &cm->cmsg_len);
+ if (!err) {
+ cmlen = CMSG32_SPACE(i * sizeof(int));
+ kmsg->msg_control += cmlen;
+ kmsg->msg_controllen -= cmlen;
+ }
+ }
+ if (i < fdnum)
+ kmsg->msg_flags |= MSG_CTRUNC;
+
+ /*
+ * All of the files that fit in the message have had their
+ * usage counts incremented, so we just free the list.
+ */
+ __scm_destroy(scm);
+}
+
+/* In these cases we (currently) can just copy to data over verbatim
+ * because all CMSGs created by the kernel have well defined types which
+ * have the same layout in both the 32-bit and 64-bit API. One must add
+ * some special cased conversions here if we start sending control messages
+ * with incompatible types.
+ *
+ * SCM_RIGHTS and SCM_CREDENTIALS are done by hand in recvmsg32 right after
+ * we do our work. The remaining cases are:
+ *
+ * SOL_IP IP_PKTINFO struct in_pktinfo 32-bit clean
+ * IP_TTL int 32-bit clean
+ * IP_TOS __u8 32-bit clean
+ * IP_RECVOPTS variable length 32-bit clean
+ * IP_RETOPTS variable length 32-bit clean
+ * (these last two are clean because the types are defined
+ * by the IPv4 protocol)
+ * IP_RECVERR struct sock_extended_err +
+ * struct sockaddr_in 32-bit clean
+ * SOL_IPV6 IPV6_RECVERR struct sock_extended_err +
+ * struct sockaddr_in6 32-bit clean
+ * IPV6_PKTINFO struct in6_pktinfo 32-bit clean
+ * IPV6_HOPLIMIT int 32-bit clean
+ * IPV6_FLOWINFO u32 32-bit clean
+ * IPV6_HOPOPTS ipv6 hop exthdr 32-bit clean
+ * IPV6_DSTOPTS ipv6 dst exthdr(s) 32-bit clean
+ * IPV6_RTHDR ipv6 routing exthdr 32-bit clean
+ * IPV6_AUTHHDR ipv6 auth exthdr 32-bit clean
+ */
+static void
+cmsg32_recvmsg_fixup(struct msghdr *kmsg, unsigned long orig_cmsg_uptr)
+{
+ unsigned char *workbuf, *wp;
+ unsigned long bufsz, space_avail;
+ struct cmsghdr *ucmsg;
+
+ bufsz = ((unsigned long)kmsg->msg_control) - orig_cmsg_uptr;
+ space_avail = kmsg->msg_controllen + bufsz;
+ wp = workbuf = kmalloc(bufsz, GFP_KERNEL);
+ if(workbuf == NULL)
+ goto fail;
+
+ /* To make this more sane we assume the kernel sends back properly
+ * formatted control messages. Because of how the kernel will truncate
+ * the cmsg_len for MSG_TRUNC cases, we need not check that case either.
+ */
+ ucmsg = (struct cmsghdr *) orig_cmsg_uptr;
+ while(((unsigned long)ucmsg) < ((unsigned long)kmsg->msg_control)) {
+ struct cmsghdr32 *kcmsg32 = (struct cmsghdr32 *) wp;
+ int clen64, clen32;
+
+ /* UCMSG is the 64-bit format CMSG entry in user-space.
+ * KCMSG32 is within the kernel space temporary buffer
+ * we use to convert into a 32-bit style CMSG.
+ */
+ __get_user(kcmsg32->cmsg_len, &ucmsg->cmsg_len);
+ __get_user(kcmsg32->cmsg_level, &ucmsg->cmsg_level);
+ __get_user(kcmsg32->cmsg_type, &ucmsg->cmsg_type);
+
+ clen64 = kcmsg32->cmsg_len;
+ copy_from_user(CMSG32_DATA(kcmsg32), CMSG_DATA(ucmsg),
+ clen64 - CMSG_ALIGN(sizeof(*ucmsg)));
+ clen32 = ((clen64 - CMSG_ALIGN(sizeof(*ucmsg))) +
+ CMSG32_ALIGN(sizeof(struct cmsghdr32)));
+ kcmsg32->cmsg_len = clen32;
+
+ ucmsg = (struct cmsghdr *) (((char *)ucmsg) +
+ CMSG_ALIGN(clen64));
+ wp = (((char *)kcmsg32) + CMSG32_ALIGN(clen32));
+ }
+
+ /* Copy back fixed up data, and adjust pointers. */
+ bufsz = (wp - workbuf);
+ copy_to_user((void *)orig_cmsg_uptr, workbuf, bufsz);
+
+ kmsg->msg_control = (struct cmsghdr *)
+ (((char *)orig_cmsg_uptr) + bufsz);
+ kmsg->msg_controllen = space_avail - bufsz;
+
+ kfree(workbuf);
+ return;
+
+fail:
+ /* If we leave the 64-bit format CMSG chunks in there,
+ * the application could get confused and crash. So to
+ * ensure greater recovery, we report no CMSGs.
+ */
+ kmsg->msg_controllen += bufsz;
+ kmsg->msg_control = (void *) orig_cmsg_uptr;
+}
+
+asmlinkage int
+sys32_sendmsg(int fd, struct msghdr32 *user_msg, unsigned user_flags)
+{
+ struct socket *sock;
+ char address[MAX_SOCK_ADDR];
+ struct iovec iov[UIO_FASTIOV];
+ unsigned char ctl[sizeof(struct cmsghdr) + 20];
+ unsigned char *ctl_buf = ctl;
+ struct msghdr kern_msg;
+ int err, total_len;
+
+ if(msghdr_from_user32_to_kern(&kern_msg, user_msg))
+ return -EFAULT;
+ if(kern_msg.msg_iovlen > UIO_MAXIOV)
+ return -EINVAL;
+ err = verify_iovec32(&kern_msg, iov, address, VERIFY_READ);
+ if (err < 0)
+ goto out;
+ total_len = err;
+
+ if(kern_msg.msg_controllen) {
+ err = cmsghdr_from_user32_to_kern(&kern_msg, ctl, sizeof(ctl));
+ if(err)
+ goto out_freeiov;
+ ctl_buf = kern_msg.msg_control;
+ }
+ kern_msg.msg_flags = user_flags;
+
+ lock_kernel();
+ sock = sockfd_lookup(fd, &err);
+ if (sock != NULL) {
+ if (sock->file->f_flags & O_NONBLOCK)
+ kern_msg.msg_flags |= MSG_DONTWAIT;
+ err = sock_sendmsg(sock, &kern_msg, total_len);
+ sockfd_put(sock);
+ }
+ unlock_kernel();
+
+ /* N.B. Use kfree here, as kern_msg.msg_controllen might change? */
+ if(ctl_buf != ctl)
+ kfree(ctl_buf);
+out_freeiov:
+ if(kern_msg.msg_iov != iov)
+ kfree(kern_msg.msg_iov);
+out:
+ return err;
+}
+
+asmlinkage int
+sys32_recvmsg(int fd, struct msghdr32 *user_msg, unsigned int user_flags)
+{
+ struct iovec iovstack[UIO_FASTIOV];
+ struct msghdr kern_msg;
+ char addr[MAX_SOCK_ADDR];
+ struct socket *sock;
+ struct iovec *iov = iovstack;
+ struct sockaddr *uaddr;
+ int *uaddr_len;
+ unsigned long cmsg_ptr;
+ int err, total_len, len = 0;
+
+ if(msghdr_from_user32_to_kern(&kern_msg, user_msg))
+ return -EFAULT;
+ if(kern_msg.msg_iovlen > UIO_MAXIOV)
+ return -EINVAL;
+
+ uaddr = kern_msg.msg_name;
+ uaddr_len = &user_msg->msg_namelen;
+ err = verify_iovec32(&kern_msg, iov, addr, VERIFY_WRITE);
+ if (err < 0)
+ goto out;
+ total_len = err;
+
+ cmsg_ptr = (unsigned long) kern_msg.msg_control;
+ kern_msg.msg_flags = 0;
+
+ lock_kernel();
+ sock = sockfd_lookup(fd, &err);
+ if (sock != NULL) {
+ struct scm_cookie scm;
+
+ if (sock->file->f_flags & O_NONBLOCK)
+ user_flags |= MSG_DONTWAIT;
+ memset(&scm, 0, sizeof(scm));
+ err = sock->ops->recvmsg(sock, &kern_msg, total_len,
+ user_flags, &scm);
+ if(err >= 0) {
+ len = err;
+ if(!kern_msg.msg_control) {
+ if(sock->passcred || scm.fp)
+ kern_msg.msg_flags |= MSG_CTRUNC;
+ if(scm.fp)
+ __scm_destroy(&scm);
+ } else {
+ /* If recvmsg processing itself placed some
+ * control messages into user space, it's is
+ * using 64-bit CMSG processing, so we need
+ * to fix it up before we tack on more stuff.
+ */
+ if((unsigned long) kern_msg.msg_control
+ != cmsg_ptr)
+ cmsg32_recvmsg_fixup(&kern_msg,
+ cmsg_ptr);
+
+ /* Wheee... */
+ if(sock->passcred)
+ put_cmsg32(&kern_msg,
+ SOL_SOCKET, SCM_CREDENTIALS,
+ sizeof(scm.creds),
+ &scm.creds);
+ if(scm.fp != NULL)
+ scm_detach_fds32(&kern_msg, &scm);
+ }
+ }
+ sockfd_put(sock);
+ }
+ unlock_kernel();
+
+ if(uaddr != NULL && err >= 0)
+ err = move_addr_to_user(addr, kern_msg.msg_namelen, uaddr,
+ uaddr_len);
+ if(cmsg_ptr != 0 && err >= 0) {
+ unsigned long ucmsg_ptr = ((unsigned long)kern_msg.msg_control);
+ __kernel_size_t32 uclen = (__kernel_size_t32) (ucmsg_ptr
+ - cmsg_ptr);
+ err |= __put_user(uclen, &user_msg->msg_controllen);
+ }
+ if(err >= 0)
+ err = __put_user(kern_msg.msg_flags, &user_msg->msg_flags);
+ if(kern_msg.msg_iov != iov)
+ kfree(kern_msg.msg_iov);
+out:
+ if(err < 0)
+ return err;
+ return len;
+}
+
+extern void check_pending(int signum);
+
+asmlinkage int
+sys32_sigaction (int sig, struct old_sigaction32 *act,
+ struct old_sigaction32 *oact)
+{
+ struct k_sigaction new_ka, old_ka;
+ int ret;
+
+ if(sig < 0) {
+ current->tss.new_signal = 1;
+ sig = -sig;
+ }
+
+ if (act) {
+ old_sigset_t32 mask;
+
+ ret = get_user((long)new_ka.sa.sa_handler, &act->sa_handler);
+ ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
+ ret |= __get_user(mask, &act->sa_mask);
+ if (ret)
+ return ret;
+ siginitset(&new_ka.sa.sa_mask, mask);
+ }
+
+ ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+ if (!ret && oact) {
+ ret = put_user((long)old_ka.sa.sa_handler, &oact->sa_handler);
+ ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
+ ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
+ }
+
+ return ret;
+}
+
+#ifdef CONFIG_MODULES
+
+extern asmlinkage unsigned long sys_create_module(const char *name_user,
+ size_t size);
+
+asmlinkage unsigned long
+sys32_create_module(const char *name_user, __kernel_size_t32 size)
+{
+ return sys_create_module(name_user, (size_t)size);
+}
+
+extern asmlinkage int sys_init_module(const char *name_user,
+ struct module *mod_user);
+
+/* Hey, when you're trying to init module, take time and prepare us a nice 64bit
+ * module structure, even if from 32bit modutils... Why to pollute kernel... :))
+ */
+asmlinkage int
+sys32_init_module(const char *name_user, struct module *mod_user)
+{
+ return sys_init_module(name_user, mod_user);
+}
+
+extern asmlinkage int sys_delete_module(const char *name_user);
+
+asmlinkage int
+sys32_delete_module(const char *name_user)
+{
+ return sys_delete_module(name_user);
+}
+
+struct module_info32 {
+ u32 addr;
+ u32 size;
+ u32 flags;
+ s32 usecount;
+};
+
+/* Query various bits about modules. */
+
+static inline long
+get_mod_name(const char *user_name, char **buf)
+{
+ unsigned long page;
+ long retval;
+
+ if ((unsigned long)user_name >= TASK_SIZE
+ && !segment_eq(get_fs (), KERNEL_DS))
+ return -EFAULT;
+
+ page = __get_free_page(GFP_KERNEL);
+ if (!page)
+ return -ENOMEM;
+
+ retval = strncpy_from_user((char *)page, user_name, PAGE_SIZE);
+ if (retval > 0) {
+ if (retval < PAGE_SIZE) {
+ *buf = (char *)page;
+ return retval;
+ }
+ retval = -ENAMETOOLONG;
+ } else if (!retval)
+ retval = -EINVAL;
+
+ free_page(page);
+ return retval;
+}
+
+static inline void
+put_mod_name(char *buf)
+{
+ free_page((unsigned long)buf);
+}
+
+static __inline__ struct module *
+find_module(const char *name)
+{
+ struct module *mod;
+
+ for (mod = module_list; mod ; mod = mod->next) {
+ if (mod->flags & MOD_DELETED)
+ continue;
+ if (!strcmp(mod->name, name))
+ break;
+ }
+
+ return mod;
+}
+
+static int
+qm_modules(char *buf, size_t bufsize, __kernel_size_t32 *ret)
+{
+ struct module *mod;
+ size_t nmod, space, len;
+
+ nmod = space = 0;
+
+ for (mod = module_list; mod->next != NULL; mod = mod->next, ++nmod) {
+ len = strlen(mod->name)+1;
+ if (len > bufsize)
+ goto calc_space_needed;
+ if (copy_to_user(buf, mod->name, len))
+ return -EFAULT;
+ buf += len;
+ bufsize -= len;
+ space += len;
+ }
+
+ if (put_user(nmod, ret))
+ return -EFAULT;
+ else
+ return 0;
+
+calc_space_needed:
+ space += len;
+ while ((mod = mod->next)->next != NULL)
+ space += strlen(mod->name)+1;
+
+ if (put_user(space, ret))
+ return -EFAULT;
+ else
+ return -ENOSPC;
+}
+
+static int
+qm_deps(struct module *mod, char *buf, size_t bufsize, __kernel_size_t32 *ret)
+{
+ size_t i, space, len;
+
+ if (mod->next == NULL)
+ return -EINVAL;
+ if ((mod->flags & (MOD_RUNNING | MOD_DELETED)) != MOD_RUNNING)
+ if (put_user(0, ret))
+ return -EFAULT;
+ else
+ return 0;
+
+ space = 0;
+ for (i = 0; i < mod->ndeps; ++i) {
+ const char *dep_name = mod->deps[i].dep->name;
+
+ len = strlen(dep_name)+1;
+ if (len > bufsize)
+ goto calc_space_needed;
+ if (copy_to_user(buf, dep_name, len))
+ return -EFAULT;
+ buf += len;
+ bufsize -= len;
+ space += len;
+ }
+
+ if (put_user(i, ret))
+ return -EFAULT;
+ else
+ return 0;
+
+calc_space_needed:
+ space += len;
+ while (++i < mod->ndeps)
+ space += strlen(mod->deps[i].dep->name)+1;
+
+ if (put_user(space, ret))
+ return -EFAULT;
+ else
+ return -ENOSPC;
+}
+
+static int
+qm_refs(struct module *mod, char *buf, size_t bufsize, __kernel_size_t32 *ret)
+{
+ size_t nrefs, space, len;
+ struct module_ref *ref;
+
+ if (mod->next == NULL)
+ return -EINVAL;
+ if ((mod->flags & (MOD_RUNNING | MOD_DELETED)) != MOD_RUNNING)
+ if (put_user(0, ret))
+ return -EFAULT;
+ else
+ return 0;
+
+ space = 0;
+ for (nrefs = 0, ref = mod->refs; ref ; ++nrefs, ref = ref->next_ref) {
+ const char *ref_name = ref->ref->name;
+
+ len = strlen(ref_name)+1;
+ if (len > bufsize)
+ goto calc_space_needed;
+ if (copy_to_user(buf, ref_name, len))
+ return -EFAULT;
+ buf += len;
+ bufsize -= len;
+ space += len;
+ }
+
+ if (put_user(nrefs, ret))
+ return -EFAULT;
+ else
+ return 0;
+
+calc_space_needed:
+ space += len;
+ while ((ref = ref->next_ref) != NULL)
+ space += strlen(ref->ref->name)+1;
+
+ if (put_user(space, ret))
+ return -EFAULT;
+ else
+ return -ENOSPC;
+}
+
+static inline int
+qm_symbols(struct module *mod, char *buf, size_t bufsize,
+ __kernel_size_t32 *ret)
+{
+ size_t i, space, len;
+ struct module_symbol *s;
+ char *strings;
+ unsigned *vals;
+
+ if ((mod->flags & (MOD_RUNNING | MOD_DELETED)) != MOD_RUNNING)
+ if (put_user(0, ret))
+ return -EFAULT;
+ else
+ return 0;
+
+ space = mod->nsyms * 2*sizeof(u32);
+
+ i = len = 0;
+ s = mod->syms;
+
+ if (space > bufsize)
+ goto calc_space_needed;
+
+ if (!access_ok(VERIFY_WRITE, buf, space))
+ return -EFAULT;
+
+ bufsize -= space;
+ vals = (unsigned *)buf;
+ strings = buf+space;
+
+ for (; i < mod->nsyms ; ++i, ++s, vals += 2) {
+ len = strlen(s->name)+1;
+ if (len > bufsize)
+ goto calc_space_needed;
+
+ if (copy_to_user(strings, s->name, len)
+ || __put_user(s->value, vals+0)
+ || __put_user(space, vals+1))
+ return -EFAULT;
+
+ strings += len;
+ bufsize -= len;
+ space += len;
+ }
+
+ if (put_user(i, ret))
+ return -EFAULT;
+ else
+ return 0;
+
+calc_space_needed:
+ for (; i < mod->nsyms; ++i, ++s)
+ space += strlen(s->name)+1;
+
+ if (put_user(space, ret))
+ return -EFAULT;
+ else
+ return -ENOSPC;
+}
+
+static inline int
+qm_info(struct module *mod, char *buf, size_t bufsize, __kernel_size_t32 *ret)
+{
+ int error = 0;
+
+ if (mod->next == NULL)
+ return -EINVAL;
+
+ if (sizeof(struct module_info32) <= bufsize) {
+ struct module_info32 info;
+ info.addr = (unsigned long)mod;
+ info.size = mod->size;
+ info.flags = mod->flags;
+ info.usecount =
+ ((mod_member_present(mod, can_unload)
+ && mod->can_unload)
+ ? -1 : atomic_read(&mod->uc.usecount));
+
+ if (copy_to_user(buf, &info, sizeof(struct module_info32)))
+ return -EFAULT;
+ } else
+ error = -ENOSPC;
+
+ if (put_user(sizeof(struct module_info32), ret))
+ return -EFAULT;
+
+ return error;
+}
+
+asmlinkage int
+sys32_query_module(char *name_user, int which, char *buf,
+ __kernel_size_t32 bufsize, u32 ret)
+{
+ struct module *mod;
+ int err;
+
+ lock_kernel();
+ if (name_user == 0) {
+ /* This finds "kernel_module" which is not exported. */
+ for(mod = module_list; mod->next != NULL; mod = mod->next)
+ ;
+ } else {
+ long namelen;
+ char *name;
+
+ if ((namelen = get_mod_name(name_user, &name)) < 0) {
+ err = namelen;
+ goto out;
+ }
+ err = -ENOENT;
+ if (namelen == 0) {
+ /* This finds "kernel_module" which is not exported. */
+ for(mod = module_list;
+ mod->next != NULL;
+ mod = mod->next) ;
+ } else if ((mod = find_module(name)) == NULL) {
+ put_mod_name(name);
+ goto out;
+ }
+ put_mod_name(name);
+ }
+
+ switch (which)
+ {
+ case 0:
+ err = 0;
+ break;
+ case QM_MODULES:
+ err = qm_modules(buf, bufsize, (__kernel_size_t32 *)AA(ret));
+ break;
+ case QM_DEPS:
+ err = qm_deps(mod, buf, bufsize, (__kernel_size_t32 *)AA(ret));
+ break;
+ case QM_REFS:
+ err = qm_refs(mod, buf, bufsize, (__kernel_size_t32 *)AA(ret));
+ break;
+ case QM_SYMBOLS:
+ err = qm_symbols(mod, buf, bufsize,
+ (__kernel_size_t32 *)AA(ret));
+ break;
+ case QM_INFO:
+ err = qm_info(mod, buf, bufsize, (__kernel_size_t32 *)AA(ret));
+ break;
+ default:
+ err = -EINVAL;
+ break;
+ }
+out:
+ unlock_kernel();
+ return err;
+}
+
+struct kernel_sym32 {
+ u32 value;
+ char name[60];
+};
+
+extern asmlinkage int sys_get_kernel_syms(struct kernel_sym *table);
+
+asmlinkage int
+sys32_get_kernel_syms(struct kernel_sym32 *table)
+{
+ int len, i;
+ struct kernel_sym *tbl;
+ mm_segment_t old_fs;
+
+ len = sys_get_kernel_syms(NULL);
+ if (!table) return len;
+ tbl = kmalloc (len * sizeof (struct kernel_sym), GFP_KERNEL);
+ if (!tbl) return -ENOMEM;
+ old_fs = get_fs();
+ set_fs (KERNEL_DS);
+ sys_get_kernel_syms(tbl);
+ set_fs (old_fs);
+ for (i = 0; i < len; i++, table += sizeof (struct kernel_sym32)) {
+ if (put_user (tbl[i].value, &table->value) ||
+ copy_to_user (table->name, tbl[i].name, 60))
+ break;
+ }
+ kfree (tbl);
+ return i;
+}
+
+#else /* CONFIG_MODULES */
+
+asmlinkage unsigned long
+sys32_create_module(const char *name_user, size_t size)
+{
+ return -ENOSYS;
+}
+
+asmlinkage int
+sys32_init_module(const char *name_user, struct module *mod_user)
+{
+ return -ENOSYS;
+}
+
+asmlinkage int
+sys32_delete_module(const char *name_user)
+{
+ return -ENOSYS;
+}
+
+asmlinkage int
+sys32_query_module(const char *name_user, int which, char *buf, size_t bufsize,
+ size_t *ret)
+{
+ /* Let the program know about the new interface. Not that
+ it'll do them much good. */
+ if (which == 0)
+ return 0;
+
+ return -ENOSYS;
+}
+
+asmlinkage int
+sys32_get_kernel_syms(struct kernel_sym *table)
+{
+ return -ENOSYS;
+}
+
+#endif /* CONFIG_MODULES */
+
+/* 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_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;
+ u32 u32_debug;
+ } 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_authd u.u32_authd
+#define ca32_debug u.u32_debug
+};
+
+union nfsctl_res32 {
+ struct knfs_fh cr32_getfh;
+ u32 cr32_debug;
+};
+
+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);
+ 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_getfh32_res_trans(union nfsctl_res *kres, union nfsctl_res32 *res32)
+{
+ int err;
+
+ err = copy_to_user(&res32->cr32_getfh,
+ &kres->cr_getfh,
+ sizeof(res32->cr32_getfh));
+ err |= __put_user(kres->cr_debug, &res32->cr32_debug);
+ return err;
+}
+
+extern asmlinkage int sys_nfsservctl(int cmd, void *arg, void *resp);
+
+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:
+ 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;
+ 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 && cmd == NFSCTL_GETFH)
+ 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;
+}
+
+asmlinkage int sys_utimes(char *, struct timeval *);
+
+asmlinkage int
+sys32_utimes(char *filename, struct timeval32 *tvs)
+{
+ char *kfilename;
+ struct timeval ktvs[2];
+ mm_segment_t old_fs;
+ int ret;
+
+ kfilename = getname32(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 int
+sys32_pause(void)
+{
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ return -ERESTARTNOHAND;
+}
+
+/* PCI config space poking. */
+extern asmlinkage int sys_pciconfig_read(unsigned long bus,
+ unsigned long dfn,
+ unsigned long off,
+ unsigned long len,
+ unsigned char *buf);
+
+extern asmlinkage int sys_pciconfig_write(unsigned long bus,
+ unsigned long dfn,
+ unsigned long off,
+ unsigned long len,
+ unsigned char *buf);
+
+asmlinkage int
+sys32_pciconfig_read(u32 bus, u32 dfn, u32 off, u32 len, u32 ubuf)
+{
+ return sys_pciconfig_read((unsigned long) bus,
+ (unsigned long) dfn,
+ (unsigned long) off,
+ (unsigned long) len,
+ (unsigned char *)AA(ubuf));
+}
+
+asmlinkage int
+sys32_pciconfig_write(u32 bus, u32 dfn, u32 off, u32 len, u32 ubuf)
+{
+ return sys_pciconfig_write((unsigned long) bus,
+ (unsigned long) dfn,
+ (unsigned long) off,
+ (unsigned long) len,
+ (unsigned char *)AA(ubuf));
+}
+
+extern asmlinkage int sys_prctl(int option, unsigned long arg2,
+ unsigned long arg3, unsigned long arg4,
+ unsigned long arg5);
+
+asmlinkage int
+sys32_prctl(int option, u32 arg2, u32 arg3, u32 arg4, u32 arg5)
+{
+ return sys_prctl(option,
+ (unsigned long) arg2,
+ (unsigned long) arg3,
+ (unsigned long) arg4,
+ (unsigned long) arg5);
+}
+
+
+extern asmlinkage int sys_newuname(struct new_utsname * name);
+
+asmlinkage int
+sys32_newuname(struct new_utsname * name)
+{
+ int ret = sys_newuname(name);
+
+ if (current->personality == PER_LINUX32 && !ret) {
+ ret = copy_to_user(name->machine, "sparc\0\0", 8);
+ }
+ return ret;
+}
+
+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;
+
+asmlinkage ssize_t32
+sys32_pread(unsigned int fd, char *ubuf, __kernel_size_t32 count,
+ u32 poshi, u32 poslo)
+{
+ 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 poshi, u32 poslo)
+{
+ return sys_pwrite(fd, ubuf, count,
+ ((loff_t)AA(poshi) << 32) | AA(poslo));
+}
+
+
+extern asmlinkage int sys_personality(unsigned long);
+
+asmlinkage int
+sys32_personality(unsigned long personality)
+{
+ int ret;
+ lock_kernel();
+ if (current->personality == PER_LINUX32 && personality == PER_LINUX)
+ personality = PER_LINUX32;
+ ret = sys_personality(personality);
+ unlock_kernel();
+ 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 int
+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 int
+sys32_adjtimex(struct timex32 *utp)
+{
+ struct timex txc;
+ int ret;
+
+ memset(&txc, 0, sizeof(struct timex));
+
+ if(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(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;
+}
+#endif // NOTYET
+
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)