[PARISC] Use compat_sys_getdents

Switch to using the generic compat_sys_getdents instead of a
homebrew one.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

diff --git a/arch/parisc/kernel/sys_parisc32.c b/arch/parisc/kernel/sys_parisc32.c
index bb23ff7..2989c66 100644 (file)
--- a/arch/parisc/kernel/sys_parisc32.c
+++ b/arch/parisc/kernel/sys_parisc32.c
@@ -285,147 +285,6 @@ int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
        return err;
 }
 
-struct linux32_dirent {
-       u32             d_ino;
-       compat_off_t    d_off;
-       u16             d_reclen;
-       char            d_name[1];
-};
-
-struct old_linux32_dirent {
-       u32     d_ino;
-       u32     d_offset;
-       u16     d_namlen;
-       char    d_name[1];
-};
-
-struct getdents32_callback {
-       struct linux32_dirent __user * current_dir;
-       struct linux32_dirent __user * previous;
-       int count;
-       int error;
-};
-
-struct readdir32_callback {
-       struct old_linux32_dirent __user * dirent;
-       int count;
-};
-
-#define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de)))
-static int filldir32 (void *__buf, const char *name, int namlen,
-                       loff_t offset, u64 ino, unsigned int d_type)
-{
-       struct linux32_dirent __user * dirent;
-       struct getdents32_callback * buf = (struct getdents32_callback *) __buf;
-       int reclen = ALIGN(NAME_OFFSET(dirent) + 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;
-       dirent = buf->previous;
-       if (dirent)
-               put_user(offset, &dirent->d_off);
-       dirent = buf->current_dir;
-       buf->previous = dirent;
-       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);
-       dirent = ((void __user *)dirent) + reclen;
-       buf->current_dir = dirent;
-       buf->count -= reclen;
-       return 0;
-}
-
-asmlinkage long
-sys32_getdents (unsigned int fd, void __user * dirent, unsigned int count)
-{
-       struct file * file;
-       struct linux32_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 = (struct linux32_dirent __user *) 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;
-       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 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;
-}
-
 /*** copied from mips64 ***/
 /*
  * Ooo, nasty.  We need here to frob 32-bit unsigned longs to

diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S
index 627f3c2..2540786 100644 (file)
--- a/arch/parisc/kernel/syscall_table.S
+++ b/arch/parisc/kernel/syscall_table.S
@@ -222,9 +222,7 @@
        ENTRY_SAME(setfsgid)
        /* I think this might work */
        ENTRY_SAME(llseek)              /* 140 */
-       /* struct linux_dirent has longs, like 'unsigned long d_ino' which
-        * almost definitely should be 'ino_t d_ino' but it's too late now */
-       ENTRY_DIFF(getdents)
+       ENTRY_COMP(getdents)
        /* it is POSSIBLE that select will be OK because even though fd_set
         * contains longs, the macros and sizes are clever. */
        ENTRY_COMP(select)