New upstream version 1.2.5

[sven/exfat-utils.git] / dump / main.c

diff --git a/dump/main.c b/dump/main.c
index fa80903b8a0c07a32c20d3a6daee67c50ce52e2b..fda5b9b35b5ca125463659d86eade510486259b1 100644 (file)
--- a/dump/main.c
+++ b/dump/main.c
@@ -2,11 +2,12 @@
        main.c (08.11.10)
        Prints detailed information about exFAT volume.
 
        main.c (08.11.10)
        Prints detailed information about exFAT volume.
 

-       Copyright (C) 2011-2013  Andrew Nayenko
+       Free exFAT implementation.
+       Copyright (C) 2011-2016  Andrew Nayenko

 
 

-       This program is free software: you can redistribute it and/or modify
+       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
        it under the terms of the GNU General Public License as published by

-       the Free Software Foundation, either version 3 of the License, or
+       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,
        (at your option) any later version.
 
        This program is distributed in the hope that it will be useful,


@@ -14,16 +15,17 @@
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.
 
        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, see <http://www.gnu.org/licenses/>.
+       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.,
+       51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

 */
 
 */
 

+#include <exfat.h>

 #include <fcntl.h>
 #include <unistd.h>
 #include <inttypes.h>
 #include <stdio.h>
 #include <string.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <inttypes.h>
 #include <stdio.h>
 #include <string.h>

-#include <exfat.h>

 
 static void print_generic_info(const struct exfat_super_block* sb)
 {
 
 static void print_generic_info(const struct exfat_super_block* sb)
 {


@@ -83,13 +85,13 @@ static int dump_sb(const char* spec)
        if (exfat_read(dev, &sb, sizeof(struct exfat_super_block)) < 0)
        {
                exfat_close(dev);
        if (exfat_read(dev, &sb, sizeof(struct exfat_super_block)) < 0)
        {
                exfat_close(dev);

-               exfat_error("failed to read from `%s'", spec);
+               exfat_error("failed to read from '%s'", spec);

                return 1;
        }
        if (memcmp(sb.oem_name, "EXFAT   ", sizeof(sb.oem_name)) != 0)
        {
                exfat_close(dev);
                return 1;
        }
        if (memcmp(sb.oem_name, "EXFAT   ", sizeof(sb.oem_name)) != 0)
        {
                exfat_close(dev);

-               exfat_error("exFAT file system is not found on `%s'", spec);
+               exfat_error("exFAT file system is not found on '%s'", spec);

                return 1;
        }
 
                return 1;
        }
 


@@ -138,40 +140,104 @@ static int dump_full(const char* spec, bool used_sectors)
        return 0;
 }
 
        return 0;
 }
 

+static int dump_file_fragments(const char* spec, const char* path)
+{
+       struct exfat ef;
+       struct exfat_node* node;
+       cluster_t cluster;
+       cluster_t next_cluster;
+       cluster_t fragment_start_cluster;
+       off_t remainder;
+       off_t fragment_size = 0;
+       int rc = 0;
+
+       if (exfat_mount(&ef, spec, "ro") != 0)
+               return 1;
+
+       rc = exfat_lookup(&ef, &node, path);
+       if (rc != 0)
+       {
+               exfat_unmount(&ef);
+               exfat_error("'%s': %s", path, strerror(-rc));
+               return 1;
+       }
+
+       cluster = fragment_start_cluster = node->start_cluster;
+       remainder = node->size;
+       while (remainder > 0)
+       {
+               off_t lsize;
+
+               if (CLUSTER_INVALID(cluster))
+               {
+                       exfat_error("'%s' has invalid cluster %#x", path, cluster);
+                       rc = 1;
+                       break;
+               }
+
+               lsize = MIN(CLUSTER_SIZE(*ef.sb), remainder);
+               fragment_size += lsize;
+               remainder -= lsize;
+
+               next_cluster = exfat_next_cluster(&ef, node, cluster);
+               if (next_cluster != cluster + 1 || remainder == 0)
+               {
+                       /* next cluster is not contiguous or this is EOF */
+                       printf("%"PRIu64" %"PRIu64"\n",
+                                       exfat_c2o(&ef, fragment_start_cluster), fragment_size);
+                       /* start a new fragment */
+                       fragment_start_cluster = next_cluster;
+                       fragment_size = 0;
+               }
+               cluster = next_cluster;
+       }
+
+       exfat_put_node(&ef, node);
+       exfat_unmount(&ef);
+       return rc;
+}
+

 static void usage(const char* prog)
 {
 static void usage(const char* prog)
 {

-       fprintf(stderr, "Usage: %s [-s] [-u] [-v] <device>\n", prog);
+       fprintf(stderr, "Usage: %s [-s] [-u] [-f file] [-V] <device>\n", prog);

        exit(1);
 }
 
 int main(int argc, char* argv[])
 {
        exit(1);
 }
 
 int main(int argc, char* argv[])
 {

-       char** pp;
+       int opt;

        const char* spec = NULL;
        bool sb_only = false;
        bool used_sectors = false;
        const char* spec = NULL;
        bool sb_only = false;
        bool used_sectors = false;

+       const char* file_path = NULL;

 
 

-       printf("dumpexfat %u.%u.%u\n",
-                       EXFAT_VERSION_MAJOR, EXFAT_VERSION_MINOR, EXFAT_VERSION_PATCH);
-
-       for (pp = argv + 1; *pp; pp++)
+       while ((opt = getopt(argc, argv, "suf:V")) != -1)

        {
        {

-               if (strcmp(*pp, "-s") == 0)
+               switch (opt)
+               {
+               case 's':

                        sb_only = true;
                        sb_only = true;

-               else if (strcmp(*pp, "-u") == 0)
+                       break;
+               case 'u':

                        used_sectors = true;
                        used_sectors = true;

-               else if (strcmp(*pp, "-v") == 0)
-               {
-                       puts("Copyright (C) 2011-2013  Andrew Nayenko");
+                       break;
+               case 'f':
+                       file_path = optarg;
+                       break;
+               case 'V':
+                       printf("dumpexfat %s\n", VERSION);
+                       puts("Copyright (C) 2011-2016  Andrew Nayenko");

                        return 0;
                        return 0;

-               }
-               else if (spec == NULL)
-                       spec = *pp;
-               else
+               default:

                        usage(argv[0]);
                        usage(argv[0]);

+               }

        }
        }

-       if (spec == NULL)
+       if (argc - optind != 1)

                usage(argv[0]);
                usage(argv[0]);

+       spec = argv[optind];
+
+       if (file_path)
+               return dump_file_fragments(spec, file_path);

 
        if (sb_only)
                return dump_sb(spec);
 
        if (sb_only)
                return dump_sb(spec);