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authorBrad Bishop <bradleyb@us.ibm.com>2014-06-30 22:10:16 -0500
committerPatrick Williams <iawillia@us.ibm.com>2014-07-02 22:49:29 -0500
commitbf4630076762d9c20c16c80c1c791f352b046dd1 (patch)
treeefc67bad010a28fd1abf5aeeefda2a969514fd97 /fpart/src/cmd_create.c
downloadffs-bf4630076762d9c20c16c80c1c791f352b046dd1.tar.gz
ffs-bf4630076762d9c20c16c80c1c791f352b046dd1.zip
Port FFS tools over from Building Block repository.
Diffstat (limited to 'fpart/src/cmd_create.c')
-rw-r--r--fpart/src/cmd_create.c113
1 files changed, 113 insertions, 0 deletions
diff --git a/fpart/src/cmd_create.c b/fpart/src/cmd_create.c
new file mode 100644
index 0000000..f7448ec
--- /dev/null
+++ b/fpart/src/cmd_create.c
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) International Business Machines Corp., 2012
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/*
+ * File: create.c
+ * Author: Shaun Wetzstein <shaun@us.ibm.com>
+ * Descr: --create implementation
+ * Date: 01/30/2013
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <fcntl.h>
+#include <string.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <errno.h>
+#include <ctype.h>
+#include <regex.h>
+
+#include <clib/attribute.h>
+#include <clib/assert.h>
+#include <clib/list.h>
+#include <clib/list_iter.h>
+#include <clib/misc.h>
+#include <clib/min.h>
+#include <clib/err.h>
+#include <clib/raii.h>
+
+#include "main.h"
+
+int command_create(args_t * args)
+{
+ assert(args != NULL);
+
+ size_t block = 0;
+ size_t size = 0;
+ size_t pad = 0xff;
+
+ if (parse_size(args->block, &block) < 0)
+ return -1;
+ if (parse_size(args->size, &size) < 0)
+ return -1;
+ if (args->pad != NULL)
+ if (parse_size(args->pad, &pad) < 0)
+ return -1;
+
+ struct stat st;
+ if (stat(args->target, &st) < 0) {
+ if (errno == ENOENT) {
+ create_regular_file(args->target, size, (uint8_t)pad);
+ } else {
+ ERRNO(errno);
+ return -1;
+ }
+ } else {
+ if (st.st_size != size) {
+ create_regular_file(args->target, size, (uint8_t)pad);
+ } else {
+ if (args->force != f_FORCE && st.st_size != size) {
+ UNEXPECTED("--size '%d' differs from actual "
+ "size '%lld', use --force to "
+ "override", size, st.st_size);
+ return -1;
+ }
+ }
+ }
+
+ /* ========================= */
+
+ int create(args_t * args, off_t poffset)
+ {
+ if (args->verbose == f_VERBOSE)
+ printf("%llx: create partition table\n", poffset);
+
+ const char * target = args->target;
+ int debug = args->debug;
+
+ RAII(FILE*, file, fopen_generic(target, "r+", debug), fclose);
+ if (file == NULL)
+ return -1;
+ RAII(ffs_t*, ffs, __ffs_fcreate(file, poffset, block,
+ size / block), __ffs_fclose);
+ if (ffs == NULL)
+ return -1;
+
+ return 0;
+ }
+
+ /* ========================= */
+
+ return command(args, create);
+}
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