[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>

2 files changed, 1 insertions, 144 deletions

diff --git a/arch/parisc/kernel/sys_parisc32.c b/arch/parisc/kernel/sys_parisc32.c
index bb23ff71c28e..2989c6682bf6 100644
--- 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 627f3c28ad8c..2540786a970f 100644
--- 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)