diff options
Diffstat (limited to 'fpart/src/cmd_create.c')
-rw-r--r-- | fpart/src/cmd_create.c | 113 |
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); +} |