[SPARC64]: Do not duplicate compat dirent code.

arch/sparc64/kernel/sys_sparc32.c

@@ -867,138 +867,6 @@ asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned
 		return sys_ftruncate(fd, (high << 32) | low);
 }
 
-/* readdir & getdents */
-
-#define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de)))
-#define ROUND_UP(x) (((x)+sizeof(u32)-1) & ~(sizeof(u32)-1))
-
-struct old_linux_dirent32 {
-	u32		d_ino;
-	u32		d_offset;
-	unsigned short	d_namlen;
-	char		d_name[1];
-};
-
-struct readdir_callback32 {
-	struct old_linux_dirent32 __user * dirent;
-	int count;
-};
-
-static int fillonedir(void * __buf, const char * name, int namlen,
-		      loff_t offset, ino_t ino, unsigned int d_type)
-{
-	struct readdir_callback32 * buf = (struct readdir_callback32 *) __buf;
-	struct old_linux_dirent32 __user * dirent;
-
-	if (buf->count)
-		return -EINVAL;
-	buf->count++;
-	dirent = buf->dirent;
-	put_user(ino, &dirent->d_ino);
-	put_user(offset, &dirent->d_offset);
-	put_user(namlen, &dirent->d_namlen);
-	copy_to_user(dirent->d_name, name, namlen);
-	put_user(0, dirent->d_name + namlen);
-	return 0;
-}
-
-asmlinkage long old32_readdir(unsigned int fd, struct old_linux_dirent32 __user *dirent, unsigned int count)
-{
-	int error = -EBADF;
-	struct file * file;
-	struct readdir_callback32 buf;
-
-	file = fget(fd);
-	if (!file)
-		goto out;
-
-	buf.count = 0;
-	buf.dirent = dirent;
-
-	error = vfs_readdir(file, fillonedir, &buf);
-	if (error < 0)
-		goto out_putf;
-	error = buf.count;
-
-out_putf:
-	fput(file);
-out:
-	return error;
-}
-
-struct linux_dirent32 {
-	u32		d_ino;
-	u32		d_off;
-	unsigned short	d_reclen;
-	char		d_name[1];
-};
-
-struct getdents_callback32 {
-	struct linux_dirent32 __user *current_dir;
-	struct linux_dirent32 __user *previous;
-	int count;
-	int error;
-};
-
-static int filldir(void * __buf, const char * name, int namlen, loff_t offset, ino_t ino,
-		   unsigned int d_type)
-{
-	struct linux_dirent32 __user * dirent;
-	struct getdents_callback32 * buf = (struct getdents_callback32 *) __buf;
-	int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 2);
-
-	buf->error = -EINVAL;	/* only used if we fail.. */
-	if (reclen > buf->count)
-		return -EINVAL;
-	dirent = buf->previous;
-	if (dirent)
-		put_user(offset, &dirent->d_off);
-	dirent = buf->current_dir;
-	buf->previous = dirent;
-	put_user(ino, &dirent->d_ino);
-	put_user(reclen, &dirent->d_reclen);
-	copy_to_user(dirent->d_name, name, namlen);
-	put_user(0, dirent->d_name + namlen);
-	put_user(d_type, (char __user *) dirent + reclen - 1);
-	dirent = (void __user *) dirent + reclen;
-	buf->current_dir = dirent;
-	buf->count -= reclen;
-	return 0;
-}
-
-asmlinkage long sys32_getdents(unsigned int fd, struct linux_dirent32 __user *dirent, unsigned int count)
-{
-	struct file * file;
-	struct linux_dirent32 __user *lastdirent;
-	struct getdents_callback32 buf;
-	int 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, filldir, &buf);
-	if (error < 0)
-		goto out_putf;
-	lastdirent = buf.previous;
-	error = buf.error;
-	if (lastdirent) {
-		put_user(file->f_pos, &lastdirent->d_off);
-		error = count - buf.count;
-	}
-out_putf:
-	fput(file);
-out:
-	return error;
-}
-
-/* end of readdir & getdents */
-
 int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
 {
 	int err;

arch/sparc64/kernel/systbls.S

@@ -54,13 +54,13 @@ sys_call_table32:
 	.word compat_sys_fcntl64, sys_ni_syscall, compat_sys_statfs, compat_sys_fstatfs, sys_oldumount
 /*160*/	.word compat_sys_sched_setaffinity, compat_sys_sched_getaffinity, sys32_getdomainname, sys32_setdomainname, sys_nis_syscall
 	.word sys_quotactl, sys_set_tid_address, compat_sys_mount, sys_ustat, sys32_setxattr
-/*170*/	.word sys32_lsetxattr, sys32_fsetxattr, sys_getxattr, sys_lgetxattr, sys32_getdents
+/*170*/	.word sys32_lsetxattr, sys32_fsetxattr, sys_getxattr, sys_lgetxattr, compat_sys_getdents
 	.word sys_setsid, sys_fchdir, sys32_fgetxattr, sys_listxattr, sys_llistxattr
 /*180*/	.word sys32_flistxattr, sys_removexattr, sys_lremovexattr, compat_sys_sigpending, sys_ni_syscall
 	.word sys32_setpgid, sys32_fremovexattr, sys32_tkill, sys32_exit_group, sparc64_newuname
 /*190*/	.word sys32_init_module, sparc64_personality, sys_remap_file_pages, sys32_epoll_create, sys32_epoll_ctl
 	.word sys32_epoll_wait, sys_nis_syscall, sys_getppid, sys32_sigaction, sys_sgetmask
-/*200*/	.word sys32_ssetmask, sys_sigsuspend, compat_sys_newlstat, sys_uselib, old32_readdir
+/*200*/	.word sys32_ssetmask, sys_sigsuspend, compat_sys_newlstat, sys_uselib, compat_old_readdir
 	.word sys32_readahead, sys32_socketcall, sys32_syslog, sys32_lookup_dcookie, sys32_fadvise64
 /*210*/	.word sys32_fadvise64_64, sys32_tgkill, sys32_waitpid, sys_swapoff, sys32_sysinfo
 	.word sys32_ipc, sys32_sigreturn, sys_clone, sys_nis_syscall, sys32_adjtimex