[IA64] use generic compat_old_sys_readdir

Switch ia64 to the generic compat_sys_old_readdir which is identical
except for slightly better error handling.  Also remove sys32_getdents
which already isn't wired up to the syscall table anymore in favour of
compat_sys_getdents.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>

3 files changed, 1 insertions, 140 deletions

diff --git a/arch/ia64/ia32/ia32_entry.S b/arch/ia64/ia32/ia32_entry.S
index 06efd1f9b800..ff88c48c5d19 100644
--- a/arch/ia64/ia32/ia32_entry.S
+++ b/arch/ia64/ia32/ia32_entry.S
@@ -262,7 +262,7 @@ ia32_syscall_table:
         data8 sys_uselib
         data8 sys_swapon
         data8 sys_reboot
-        data8 sys32_readdir
+        data8 compat_sys_old_readdir
         data8 sys32_mmap          /* 90 */
         data8 sys32_munmap
         data8 sys_truncate
diff --git a/arch/ia64/ia32/ia32priv.h b/arch/ia64/ia32/ia32priv.h
index c5c872b250da..dd0c53687a96 100644
--- a/arch/ia64/ia32/ia32priv.h
+++ b/arch/ia64/ia32/ia32priv.h
@@ -276,13 +276,6 @@ typedef struct compat_siginfo {
         } _sifields;
 } compat_siginfo_t;
 
-struct old_linux32_dirent {
-        u32     d_ino;
-        u32     d_offset;
-        u16     d_namlen;
-        char    d_name[1];
-};
-
 /*
  * IA-32 ELF specific definitions for IA-64.
  */
diff --git a/arch/ia64/ia32/sys_ia32.c b/arch/ia64/ia32/sys_ia32.c
index 465116aecb85..bf196cbb3796 100644
--- a/arch/ia64/ia32/sys_ia32.c
+++ b/arch/ia64/ia32/sys_ia32.c
@@ -1210,138 +1210,6 @@ sys32_settimeofday (struct compat_timeval __user *tv, struct timezone __user *tz
         return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
 }
 
-struct getdents32_callback {
-        struct compat_dirent __user *current_dir;
-        struct compat_dirent __user *previous;
-        int count;
-        int error;
-};
-
-struct readdir32_callback {
-        struct old_linux32_dirent __user * dirent;
-        int count;
-};
-
-static int
-filldir32 (void *__buf, const char *name, int namlen, loff_t offset, u64 ino,
-           unsigned int d_type)
-{
-        struct compat_dirent __user * dirent;
-        struct getdents32_callback * buf = (struct getdents32_callback *) __buf;
-        int reclen = ROUND_UP(offsetof(struct compat_dirent, d_name) + namlen + 1, 4);
-        u32 d_ino;
-
-        buf->error = -EINVAL;   /* only used if we fail.. */
-        if (reclen > buf->count)
-                return -EINVAL;
-        d_ino = ino;
-        if (sizeof(d_ino) < sizeof(ino) && d_ino != ino)
-                return -EOVERFLOW;
-        buf->error = -EFAULT;   /* only used if we fail.. */
-        dirent = buf->previous;
-        if (dirent)
-                if (put_user(offset, &dirent->d_off))
-                        return -EFAULT;
-        dirent = buf->current_dir;
-        buf->previous = dirent;
-        if (put_user(d_ino, &dirent->d_ino)
-            || put_user(reclen, &dirent->d_reclen)
-            || copy_to_user(dirent->d_name, name, namlen)
-            || put_user(0, dirent->d_name + namlen))
-                return -EFAULT;
-        dirent = (struct compat_dirent __user *) ((char __user *) dirent + reclen);
-        buf->current_dir = dirent;
-        buf->count -= reclen;
-        return 0;
-}
-
-asmlinkage long
-sys32_getdents (unsigned int fd, struct compat_dirent __user *dirent, unsigned int count)
-{
-        struct file * file;
-        struct compat_dirent __user * lastdirent;
-        struct getdents32_callback buf;
-        int error;
-
-        error = -EFAULT;
-        if (!access_ok(VERIFY_WRITE, dirent, count))
-                goto out;
-
-        error = -EBADF;
-        file = fget(fd);
-        if (!file)
-                goto out;
-
-        buf.current_dir = dirent;
-        buf.previous = NULL;
-        buf.count = count;
-        buf.error = 0;
-
-        error = vfs_readdir(file, filldir32, &buf);
-        if (error < 0)
-                goto out_putf;
-        error = buf.error;
-        lastdirent = buf.previous;
-        if (lastdirent) {
-                if (put_user(file->f_pos, &lastdirent->d_off))
-                        error = -EFAULT;
-                else
-                        error = count - buf.count;
-        }
-
-out_putf:
-        fput(file);
-out:
-        return error;
-}
-
-static int
-fillonedir32 (void * __buf, const char * name, int namlen, loff_t offset, u64 ino,
-              unsigned int d_type)
-{
-        struct readdir32_callback * buf = (struct readdir32_callback *) __buf;
-        struct old_linux32_dirent __user * dirent;
-        u32 d_ino;
-
-        if (buf->count)
-                return -EINVAL;
-        d_ino = ino;
-        if (sizeof(d_ino) < sizeof(ino) && d_ino != ino)
-                return -EOVERFLOW;
-        buf->count++;
-        dirent = buf->dirent;
-        if (put_user(d_ino, &dirent->d_ino)
-            || put_user(offset, &dirent->d_offset)
-            || put_user(namlen, &dirent->d_namlen)
-            || copy_to_user(dirent->d_name, name, namlen)
-            || put_user(0, dirent->d_name + namlen))
-                return -EFAULT;
-        return 0;
-}
-
-asmlinkage long
-sys32_readdir (unsigned int fd, void __user *dirent, unsigned int count)
-{
-        int error;
-        struct file * file;
-        struct readdir32_callback buf;
-
-        error = -EBADF;
-        file = fget(fd);
-        if (!file)
-                goto out;
-
-        buf.count = 0;
-        buf.dirent = dirent;
-
-        error = vfs_readdir(file, fillonedir32, &buf);
-        if (error >= 0)
-                error = buf.count;
-        fput(file);
-out:
-        return error;
-}
-
 struct sel_arg_struct {
         unsigned int n;
         unsigned int inp;