Adding upstream version 1.47.0.upstream/1.47.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 171 insertions, 0 deletions

diff --git a/lib/ext2fs/get_pathname.c b/lib/ext2fs/get_pathname.c
new file mode 100644
index 0000000..8cfaf6e
--- /dev/null
+++ b/lib/ext2fs/get_pathname.c
@@ -0,0 +1,171 @@
+/*
+ * get_pathname.c --- do directory/inode -> name translation
+ *
+ * Copyright (C) 1993, 1994, 1995 Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Library
+ * General Public License, version 2.
+ * %End-Header%
+ */
+
+/*
+ *
+ * 	ext2fs_get_pathname(fs, dir, ino, name)
+ *
+ * 	This function translates takes two inode numbers into a
+ * 	string, placing the result in <name>.  <dir> is the containing
+ * 	directory inode, and <ino> is the inode number itself.  If
+ * 	<ino> is zero, then ext2fs_get_pathname will return pathname
+ * 	of the the directory <dir>.
+ *
+ */
+
+#include "config.h"
+#include <stdio.h>
+#include <string.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include "ext2_fs.h"
+#include "ext2fs.h"
+
+struct get_pathname_struct {
+	ext2_ino_t	search_ino;
+	ext2_ino_t	parent;
+	char		*name;
+	errcode_t	errcode;
+};
+
+#ifdef __TURBOC__
+ #pragma argsused
+#endif
+static int get_pathname_proc(struct ext2_dir_entry *dirent,
+			     int	offset EXT2FS_ATTR((unused)),
+			     int	blocksize EXT2FS_ATTR((unused)),
+			     char	*buf EXT2FS_ATTR((unused)),
+			     void	*priv_data)
+{
+	struct get_pathname_struct	*gp;
+	errcode_t			retval;
+	int name_len = ext2fs_dirent_name_len(dirent);
+
+	gp = (struct get_pathname_struct *) priv_data;
+
+	if ((name_len == 2) && !strncmp(dirent->name, "..", 2))
+		gp->parent = dirent->inode;
+	if (dirent->inode == gp->search_ino) {
+		retval = ext2fs_get_mem(name_len + 1, &gp->name);
+		if (retval) {
+			gp->errcode = retval;
+			return DIRENT_ABORT;
+		}
+		strncpy(gp->name, dirent->name, name_len);
+		gp->name[name_len] = '\0';
+		return DIRENT_ABORT;
+	}
+	return 0;
+}
+
+static errcode_t ext2fs_get_pathname_int(ext2_filsys fs, ext2_ino_t dir,
+					 ext2_ino_t ino, int maxdepth,
+					 char *buf, char **name)
+{
+	struct get_pathname_struct gp;
+	char	*parent_name = 0, *ret;
+	errcode_t	retval;
+
+	if (dir == ino) {
+		retval = ext2fs_get_mem(2, name);
+		if (retval)
+			return retval;
+		strcpy(*name, (dir == EXT2_ROOT_INO) ? "/" : ".");
+		return 0;
+	}
+
+	if (!dir || (maxdepth < 0)) {
+		retval = ext2fs_get_mem(4, name);
+		if (retval)
+			return retval;
+		strcpy(*name, "...");
+		return 0;
+	}
+
+	gp.search_ino = ino;
+	gp.parent = 0;
+	gp.name = 0;
+	gp.errcode = 0;
+
+	retval = ext2fs_dir_iterate(fs, dir, 0, buf, get_pathname_proc, &gp);
+	if (retval == EXT2_ET_NO_DIRECTORY) {
+		char tmp[32];
+
+		if (ino)
+			snprintf(tmp, sizeof(tmp), "<%u>/<%u>", dir, ino);
+		else
+			snprintf(tmp, sizeof(tmp), "<%u>", dir);
+		retval = ext2fs_get_mem(strlen(tmp)+1, name);
+		if (retval)
+			goto cleanup;
+		strcpy(*name, tmp);
+		return 0;
+	} else if (retval)
+		goto cleanup;
+	if (gp.errcode) {
+		retval = gp.errcode;
+		goto cleanup;
+	}
+
+	retval = ext2fs_get_pathname_int(fs, gp.parent, dir, maxdepth-1,
+					 buf, &parent_name);
+	if (retval)
+		goto cleanup;
+	if (!ino) {
+		*name = parent_name;
+		return 0;
+	}
+
+	if (gp.name)
+		retval = ext2fs_get_mem(strlen(parent_name)+strlen(gp.name)+2,
+					&ret);
+	else
+		retval = ext2fs_get_mem(strlen(parent_name)+5, &ret);
+	if (retval)
+		goto cleanup;
+
+	ret[0] = 0;
+	if (parent_name[1])
+		strcat(ret, parent_name);
+	strcat(ret, "/");
+	if (gp.name)
+		strcat(ret, gp.name);
+	else
+		strcat(ret, "???");
+	*name = ret;
+	retval = 0;
+
+cleanup:
+	ext2fs_free_mem(&parent_name);
+	ext2fs_free_mem(&gp.name);
+	return retval;
+}
+
+errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino,
+			      char **name)
+{
+	char	*buf;
+	errcode_t	retval;
+
+	EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
+
+	retval = ext2fs_get_mem(fs->blocksize, &buf);
+	if (retval)
+		return retval;
+	if (dir == ino)
+		ino = 0;
+	retval = ext2fs_get_pathname_int(fs, dir, ino, 32, buf, name);
+	ext2fs_free_mem(&buf);
+	return retval;
+
+}