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-rw-r--r--fcp/src/cmd_user.c201
1 files changed, 201 insertions, 0 deletions
diff --git a/fcp/src/cmd_user.c b/fcp/src/cmd_user.c
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+++ b/fcp/src/cmd_user.c
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+/*
+ * 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: cmd_user.c
+ * Author: Shaun Wetzstein <shaun@us.ibm.com>
+ * Descr: user 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 "misc.h"
+#include "main.h"
+
+#define DELIM '='
+
+static int __user(args_t * args, off_t offset)
+{
+ assert(args != NULL);
+
+ char * type = args->dst_type;
+ char * target = args->dst_target;
+ char * name = args->dst_name;
+
+ RAII(FILE*, file, __fopen(type, target, "r+", debug), fclose);
+ if (file == NULL)
+ return -1;
+ if (check_file(target, file, offset) < 0)
+ return -1;
+ RAII(ffs_t*, ffs, __ffs_fopen(file, offset), __ffs_fclose);
+ if (ffs == NULL)
+ return -1;
+
+ if (ffs->count <= 0)
+ return 0;
+
+ size_t block_size;
+ if (__ffs_info(ffs, FFS_INFO_BLOCK_SIZE, &block_size) < 0)
+ return -1;
+
+ if (args->buffer != NULL) {
+ size_t buffer;
+ if (parse_size(args->buffer, &buffer) < 0)
+ return -1;
+ if (__ffs_buffer(ffs, buffer) < 0)
+ return -1;
+ }
+
+ ffs_entry_t entry;
+ if (__ffs_entry_find(ffs, name, &entry) == false) {
+ UNEXPECTED("partition entry '%s' not found\n", name);
+ return -1;
+ }
+
+ char full_name[page_size];
+ if (__ffs_entry_name(ffs, &entry, full_name,
+ sizeof full_name) < 0)
+ return -1;
+
+ if (args->protected != f_PROTECTED &&
+ entry.flags && FFS_FLAGS_PROTECTED) {
+ if (args->verbose == f_VERBOSE)
+ fprintf(stderr, "%8llx: %s: protected (skip)\n",
+ offset, full_name);
+ return 0;
+ }
+
+ // parse <word>[=<value>]
+
+ if (args->opt_nr <= 1) {
+ for (uint32_t word=0; word<FFS_USER_WORDS; word++) {
+ uint32_t value = 0;
+
+ if (__ffs_entry_user_get(ffs, name, word, &value) < 0)
+ return -1;
+
+ fprintf(stdout, "%8llx: %s: [%02d] = %08x\n",
+ offset, full_name, word, value);
+ }
+ fprintf(stdout, "\n");
+ } else {
+ for (int i=1; i<args->opt_nr; i++) {
+ if (args->opt[i] == '\0') {
+ UNEXPECTED("invalid user '%s', use form "
+ "'<word>[=<value>]'\n",
+ args->opt[i]);
+ return -1;
+ }
+
+ char * __value = strrchr(args->opt[i], DELIM);
+ if (__value != NULL)
+ *__value = '\0';
+
+ size_t word = 0;
+ if (parse_number(args->opt[i], &word) < 0)
+ return -1;
+
+ uint32_t value = 0;
+ if (__value != NULL) { // write
+ if (parse_number(__value+1, &value) < 0)
+ return -1;
+
+ *__value = DELIM;
+
+ if (__ffs_entry_user_put(ffs, full_name,
+ word, value) < 0)
+ return -1;
+
+ if (args->verbose == f_VERBOSE)
+ fprintf(stderr, "%8llx: %s: [%02d] = "
+ "%08x\n", offset, full_name,
+ word, value);
+ } else { // read
+ if (__ffs_entry_user_get(ffs, full_name,
+ word, &value) < 0)
+ return -1;
+
+ if (isatty(fileno(stdout)))
+ fprintf(stdout, "%8llx: %s: [%02d] = "
+ "%08x\n", offset, full_name,
+ word, value);
+ else
+ fprintf(stdout, "%x", value);
+ }
+ }
+ }
+
+ return 0;
+}
+
+int command_user(args_t * args)
+{
+ assert(args != NULL);
+
+ int rc = 0;
+
+ char * end = (char *)args->offset;
+ while (rc == 0 && end != NULL && *end != '\0') {
+ errno = 0;
+ off_t offset = strtoull(end, &end, 0);
+ if (end == NULL || errno != 0) {
+ UNEXPECTED("invalid --offset specified '%s'",
+ args->offset);
+ return -1;
+ }
+
+ if (*end != ',' && *end != ':' && *end != '\0') {
+ UNEXPECTED("invalid --offset separator "
+ "character '%c'", *end);
+ return -1;
+ }
+
+ rc = __user(args, offset);
+ if (rc < 0)
+ break;
+
+ if (*end == '\0')
+ break;
+ end++;
+ }
+
+ return rc;
+}
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