use libblkid to get filesystem type
we can now use libblkid to detect exfat
diff --git a/libblkid/config.c b/libblkid/config.c
new file mode 100644
index 0000000..edad6cd
--- /dev/null
+++ b/libblkid/config.c
@@ -0,0 +1,201 @@
+/*
+ * config.c - blkid.conf routines
+ *
+ * Copyright (C) 2009 Karel Zak <kzak@redhat.com>
+ *
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <sys/types.h>
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#include <stdint.h>
+#include <stdarg.h>
+
+#include "blkidP.h"
+#include "env.h"
+
+static int parse_evaluate(struct blkid_config *conf, char *s)
+{
+ while(s && *s) {
+ char *sep;
+
+ if (conf->nevals >= __BLKID_EVAL_LAST)
+ goto err;
+ sep = strchr(s, ',');
+ if (sep)
+ *sep = '\0';
+ if (strcmp(s, "udev") == 0)
+ conf->eval[conf->nevals] = BLKID_EVAL_UDEV;
+ else if (strcmp(s, "scan") == 0)
+ conf->eval[conf->nevals] = BLKID_EVAL_SCAN;
+ else
+ goto err;
+ conf->nevals++;
+ if (sep)
+ s = sep + 1;
+ else
+ break;
+ }
+ return 0;
+err:
+ DBG(DEBUG_CONFIG, printf(
+ "config file: unknown evaluation method '%s'.\n", s));
+ return -1;
+}
+
+static int parse_next(FILE *fd, struct blkid_config *conf)
+{
+ char buf[BUFSIZ];
+ char *s;
+
+ /* read the next non-blank non-comment line */
+ do {
+ if (fgets (buf, sizeof(buf), fd) == NULL)
+ return feof(fd) ? 0 : -1;
+ s = strchr (buf, '\n');
+ if (!s) {
+ /* Missing final newline? Otherwise extremely */
+ /* long line - assume file was corrupted */
+ if (feof(fd))
+ s = strchr (buf, '\0');
+ else {
+ DBG(DEBUG_CONFIG, fprintf(stderr,
+ "libblkid: config file: missing newline at line '%s'.\n",
+ buf));
+ return -1;
+ }
+ }
+ *s = '\0';
+ if (--s >= buf && *s == '\r')
+ *s = '\0';
+
+ s = buf;
+ while (*s == ' ' || *s == '\t') /* skip space */
+ s++;
+
+ } while (*s == '\0' || *s == '#');
+
+ if (!strncmp(s, "SEND_UEVENT=", 12)) {
+ s += 13;
+ if (*s && !strcasecmp(s, "yes"))
+ conf->uevent = TRUE;
+ else if (*s)
+ conf->uevent = FALSE;
+ } else if (!strncmp(s, "CACHE_FILE=", 11)) {
+ s += 11;
+ if (*s)
+ conf->cachefile = strdup(s);
+ } else if (!strncmp(s, "EVALUATE=", 9)) {
+ s += 9;
+ if (*s && parse_evaluate(conf, s) == -1)
+ return -1;
+ } else {
+ DBG(DEBUG_CONFIG, printf(
+ "config file: unknown option '%s'.\n", s));
+ return -1;
+ }
+ return 0;
+}
+
+/* return real config data or built-in default */
+struct blkid_config *blkid_read_config(const char *filename)
+{
+ struct blkid_config *conf;
+ FILE *f;
+
+ if (!filename)
+ filename = safe_getenv("BLKID_CONF");
+ if (!filename)
+ filename = BLKID_CONFIG_FILE;
+
+ conf = (struct blkid_config *) calloc(1, sizeof(*conf));
+ if (!conf)
+ return NULL;
+ conf->uevent = -1;
+
+ DBG(DEBUG_CONFIG, fprintf(stderr,
+ "reading config file: %s.\n", filename));
+
+ f = fopen(filename, "r");
+ if (!f) {
+ DBG(DEBUG_CONFIG, fprintf(stderr,
+ "%s: does not exist, using built-in default\n", filename));
+ goto dflt;
+ }
+ while (!feof(f)) {
+ if (parse_next(f, conf)) {
+ DBG(DEBUG_CONFIG, fprintf(stderr,
+ "%s: parse error\n", filename));
+ goto err;
+ }
+ }
+dflt:
+ if (!conf->nevals) {
+ conf->eval[0] = BLKID_EVAL_UDEV;
+ conf->eval[1] = BLKID_EVAL_SCAN;
+ conf->nevals = 2;
+ }
+ if (!conf->cachefile)
+ conf->cachefile = strdup(BLKID_CACHE_FILE);
+ if (conf->uevent == -1)
+ conf->uevent = TRUE;
+ if (f)
+ fclose(f);
+ return conf;
+err:
+ free(conf);
+ fclose(f);
+ return NULL;
+}
+
+void blkid_free_config(struct blkid_config *conf)
+{
+ if (!conf)
+ return;
+ free(conf->cachefile);
+ free(conf);
+}
+
+#ifdef TEST_PROGRAM
+/*
+ * usage: tst_config [<filename>]
+ */
+int main(int argc, char *argv[])
+{
+ int i;
+ struct blkid_config *conf;
+ char *filename = NULL;
+
+ blkid_init_debug(DEBUG_ALL);
+
+ if (argc == 2)
+ filename = argv[1];
+
+ conf = blkid_read_config(filename);
+ if (!conf)
+ return EXIT_FAILURE;
+
+ printf("EVALUATE: ");
+ for (i = 0; i < conf->nevals; i++)
+ printf("%s ", conf->eval[i] == BLKID_EVAL_UDEV ? "udev" : "scan");
+ printf("\n");
+
+ printf("SEND UEVENT: %s\n", conf->uevent ? "TRUE" : "FALSE");
+ printf("CACHE_FILE: %s\n", conf->cachefile);
+
+ blkid_free_config(conf);
+ return EXIT_SUCCESS;
+}
+#endif