1 files changed, 83 insertions, 0 deletions
diff --git a/e2fsck/extend.c b/e2fsck/extend.c
new file mode 100644
index 0000000..9d17e44
--- /dev/null
+++ b/e2fsck/extend.c
@@ -0,0 +1,83 @@
+/*
+ * extend.c --- extend a file so that it has at least a specified
+ * 	number of blocks.
+ *
+ * Copyright (C) 1993, 1994, 1995 Theodore Ts'o.
+ *
+ * This file may be redistributed under the terms of the GNU Public
+ * License.
+ */
+
+#include "config.h"
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include "../misc/nls-enable.h"
+
+static void usage(char *progname)
+{
+	fprintf(stderr, _("%s: %s filename nblocks blocksize\n"),
+		progname, progname);
+	exit(1);
+}
+
+
+int main(int argc, char **argv)
+{
+	char	*filename;
+	int	nblocks, blocksize;
+	int	fd;
+	char	*block;
+	errcode_t retval;
+	int	ret;
+
+	if (argc != 4)
+		usage(argv[0]);
+
+	filename = argv[1];
+	nblocks = strtoul(argv[2], 0, 0) - 1;
+	blocksize = strtoul(argv[3], 0, 0);
+
+	if (nblocks < 0) {
+		fprintf(stderr, _("Illegal number of blocks!\n"));
+		exit(1);
+	}
+
+	retval = ext2fs_get_memzero(blocksize, &block);
+	if (retval) {
+		fprintf(stderr, _("Couldn't allocate block buffer (size=%d)\n"),
+			blocksize);
+		exit(1);
+	}
+
+	fd = open(filename, O_RDWR);
+	if (fd < 0) {
+		perror(filename);
+		exit(1);
+	}
+	ret = lseek(fd, nblocks*blocksize, SEEK_SET);
+	if (ret < 0) {
+		perror("lseek");
+		exit(1);
+	}
+	ret = read(fd, block, blocksize);
+	if (ret < 0) {
+		perror("read");
+		exit(1);
+	}
+	ret = lseek(fd, nblocks*blocksize, SEEK_SET);
+	if (ret < 0) {
+		perror("lseek #2");
+		exit(1);
+	}
+	ret = write(fd, block, blocksize);
+	if (ret < 0) {
+		perror("read");
+		exit(1);
+	}
+	ext2fs_free_mem(&block);
+	return(0);
+}