1 files changed, 80 insertions, 0 deletions
diff --git a/e2fslib/unlink.c b/e2fslib/unlink.c
new file mode 100644
index 0000000..03825c4
--- /dev/null
+++ b/e2fslib/unlink.c
@@ -0,0 +1,80 @@
+/*
+ * unlink.c --- delete links in a ext2fs directory
+ * 
+ * Copyright (C) 1993, 1994, 1997 Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Public
+ * License.
+ * %End-Header%
+ */
+
+#include <stdio.h>
+#include <string.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include "ext2_fs.h"
+#include "ext2fs.h"
+
+struct link_struct  {
+	const char	*name;
+	int		namelen;
+	ext2_ino_t	inode;
+	int		flags;
+	int		done;
+};	
+
+#ifdef __TURBOC__
+ #pragma argsused
+#endif
+static int unlink_proc(struct ext2_dir_entry *dirent,
+		     int	offset,
+		     int	blocksize,
+		     char	*buf,
+		     void	*priv_data)
+{
+	struct link_struct *ls = (struct link_struct *) priv_data;
+
+	if (ls->name && ((dirent->name_len & 0xFF) != ls->namelen))
+		return 0;
+	if (ls->name && strncmp(ls->name, dirent->name,
+				dirent->name_len & 0xFF))
+		return 0;
+	if (ls->inode && (dirent->inode != ls->inode))
+		return 0;
+
+	dirent->inode = 0;
+	ls->done++;
+	return DIRENT_ABORT|DIRENT_CHANGED;
+}
+
+#ifdef __TURBOC__
+ #pragma argsused
+#endif
+errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir,
+			const char *name, ext2_ino_t ino,
+			int flags)
+{
+	errcode_t	retval;
+	struct link_struct ls;
+
+	EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
+
+	if (!(fs->flags & EXT2_FLAG_RW))
+		return EXT2_ET_RO_FILSYS;
+
+	ls.name = name;
+	ls.namelen = name ? strlen(name) : 0;
+	ls.inode = ino;
+	ls.flags = 0;
+	ls.done = 0;
+
+	retval = ext2fs_dir_iterate(fs, dir, 0, 0, unlink_proc, &ls);
+	if (retval)
+		return retval;
+
+	return (ls.done) ? 0 : EXT2_ET_DIR_NO_SPACE;
+}
+