From e32159ac00a30ed16ac7758e60a0804cbae9ed50 Mon Sep 17 00:00:00 2001
From: Thomas Schmitt <scdbackup@gmx.net>
Date: Sat, 12 Apr 2014 13:02:23 +0000
Subject: [PATCH] New -report_system_area form "gpt_crc_of:"

---
 xorriso/iso_img.c           | 36 ++++++++++++++++++++
 xorriso/xorriso.1           |  9 +++--
 xorriso/xorriso.info        | 65 ++++++++++++++++++++-----------------
 xorriso/xorriso.texi        |  9 +++--
 xorriso/xorriso_timestamp.h |  2 +-
 5 files changed, 86 insertions(+), 35 deletions(-)

diff --git a/xorriso/iso_img.c b/xorriso/iso_img.c
index 9e004c94..59a211ea 100644
--- a/xorriso/iso_img.c
+++ b/xorriso/iso_img.c
@@ -1391,6 +1391,38 @@ hint_revoke:;
 }
 
 
+int Xorriso_gpt_crc(struct XorrisO *xorriso, char *path, int flag)
+{
+ int ret;
+ char *buf = NULL;
+ FILE *fp = NULL;
+ uint32_t crc;
+
+ Xorriso_alloc_meM(buf, char, 32 * 1024);
+
+ ret= Xorriso_afile_fopen(xorriso, path, "rb", &fp, 0);
+ if(ret <= 0)
+   goto ex;
+ ret= fread(buf, 1, 32 * 1024, fp);
+ if(ret == 0) {
+   strcpy(xorriso->info_text,
+          "No bytes readable for GPT CRC from ");
+   Text_shellsafe(path, xorriso->info_text, 1);
+   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "WARNING", 0);
+   ret= 0; goto ex;
+ }
+ crc= iso_crc32_gpt((unsigned char *) buf, ret, 0);
+ sprintf(xorriso->result_line, "0x%8.8x\n", (unsigned int) crc);
+ Xorriso_result(xorriso, 0);
+ ret= 1;
+ex:;
+ if(fp != NULL && fp != stdin)
+   fclose(fp);
+ Xorriso_free_meM(buf);
+ return(ret);
+}
+
+
 int Xorriso_report_system_area(struct XorrisO *xorriso, char *form, int flag)
 {
  int ret;
@@ -1404,6 +1436,9 @@ int Xorriso_report_system_area(struct XorrisO *xorriso, char *form, int flag)
    if(ret <= 0)
      goto ex;
    ret= iso_image_report_system_area(image, &text, 0);
+ } else if(strncmp(form, "gpt_crc_of:", 11) == 0) {
+   ret = Xorriso_gpt_crc(xorriso, form + 11, 0);
+   goto ex;
  } else {
    strcpy(xorriso->info_text,
           "-report_system_area form parameter not recognized: ");
@@ -1440,3 +1475,4 @@ ex:;
    free(text);
  return(ret);
 }
+
diff --git a/xorriso/xorriso.1 b/xorriso/xorriso.1
index dad10b73..dbc15b73 100644
--- a/xorriso/xorriso.1
+++ b/xorriso/xorriso.1
@@ -9,7 +9,7 @@
 .\" First parameter, NAME, should be all caps
 .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
 .\" other parameters are allowed: see man(7), man(1)
-.TH XORRISO 1 "Version 1.3.7, Apr 11, 2014"
+.TH XORRISO 1 "Version 1.3.7, Apr 12, 2014"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .\" Some roff macros, for reference:
@@ -3741,7 +3741,7 @@ The timestamps get not automatically propagated from loaded image to newly
 written image. The ones for new images may be set by command \-volume_date.
 See there for the meaning of the particular timestamps.
 .TP
-\fB\-report_system_area\fR "plain"|"help"
+\fB\-report_system_area\fR "plain"|"help"|"gpt_crc_of:"disk_path
 With parameter "plain" print a report about the information found in
 the System Area of the loaded ISO image. The report consists of zero to
 many lines with a header text, a colon, and information text.
@@ -3749,6 +3749,11 @@ many lines with a header text, a colon, and information text.
 With parameter "help" print a text which explains the meaning of the
 lines. You probably will have to look for more documentation which explains
 the technical properties of the mentioned boot facilities.
+.br
+With parameter "gpt_crc_of:"disk_path read up to 32 KiB from the disk file
+with the path given after the colon. Compute the GPT compliant CRC number
+and print it to the result channel. The number is shown like "0x690fd979".
+The special disk_path "\-" causes reading from standard input.
 .TP
 .B Navigation in ISO image and disk filesystem:
 .TP
diff --git a/xorriso/xorriso.info b/xorriso/xorriso.info
index 0fd3015a..c42dcfad 100644
--- a/xorriso/xorriso.info
+++ b/xorriso/xorriso.info
@@ -3265,7 +3265,7 @@ File: xorriso.info,  Node: Inquiry,  Next: Navigate,  Prev: DialogCtl,  Up: Comm
      The ones for new images may be set by command -volume_date.  See
      there for the meaning of the particular timestamps.
 
--report_system_area "plain"|"help"
+-report_system_area "plain"|"help"|"gpt_crc_of:"disk_path
      With parameter "plain" print a report about the information found
      in the System Area of the loaded ISO image. The report consists of
      zero to many lines with a header text, a colon, and information
@@ -3274,6 +3274,11 @@ File: xorriso.info,  Node: Inquiry,  Next: Navigate,  Prev: DialogCtl,  Up: Comm
      the lines. You probably will have to look for more documentation
      which explains the technical properties of the mentioned boot
      facilities.
+     With parameter "gpt_crc_of:"disk_path read up to 32 KiB from the
+     disk file with the path given after the colon. Compute the GPT
+     compliant CRC number and print it to the result channel. The
+     number is shown like "0x690fd979".  The special disk_path "-"
+     causes reading from standard input.
 
 
 File: xorriso.info,  Node: Navigate,  Next: Verify,  Prev: Inquiry,  Up: Commands
@@ -5485,34 +5490,34 @@ Node: Charset150178
 Node: Exception153493
 Node: DialogCtl159613
 Node: Inquiry162211
-Node: Navigate169011
-Node: Verify177309
-Node: Restore186573
-Node: Emulation193660
-Node: Scripting204048
-Node: Frontend211819
-Node: Examples221426
-Node: ExDevices222604
-Node: ExCreate223270
-Node: ExDialog224555
-Node: ExGrowing225820
-Node: ExModifying226625
-Node: ExBootable227129
-Node: ExCharset227681
-Node: ExPseudo228573
-Node: ExCdrecord229471
-Node: ExMkisofs229788
-Node: ExGrowisofs231128
-Node: ExException232263
-Node: ExTime232717
-Node: ExIncBackup233176
-Node: ExRestore237156
-Node: ExRecovery238089
-Node: Files238659
-Node: Seealso239958
-Node: Bugreport240681
-Node: Legal241262
-Node: CommandIdx242273
-Node: ConceptIdx259008
+Node: Navigate169346
+Node: Verify177644
+Node: Restore186908
+Node: Emulation193995
+Node: Scripting204383
+Node: Frontend212154
+Node: Examples221761
+Node: ExDevices222939
+Node: ExCreate223605
+Node: ExDialog224890
+Node: ExGrowing226155
+Node: ExModifying226960
+Node: ExBootable227464
+Node: ExCharset228016
+Node: ExPseudo228908
+Node: ExCdrecord229806
+Node: ExMkisofs230123
+Node: ExGrowisofs231463
+Node: ExException232598
+Node: ExTime233052
+Node: ExIncBackup233511
+Node: ExRestore237491
+Node: ExRecovery238424
+Node: Files238994
+Node: Seealso240293
+Node: Bugreport241016
+Node: Legal241597
+Node: CommandIdx242608
+Node: ConceptIdx259343
 
 End Tag Table
diff --git a/xorriso/xorriso.texi b/xorriso/xorriso.texi
index 0fe1b0ec..31252f3f 100644
--- a/xorriso/xorriso.texi
+++ b/xorriso/xorriso.texi
@@ -50,7 +50,7 @@
 @c man .\" First parameter, NAME, should be all caps
 @c man .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
 @c man .\" other parameters are allowed: see man(7), man(1)
-@c man .TH XORRISO 1 "Version 1.3.7, Apr 11, 2014"
+@c man .TH XORRISO 1 "Version 1.3.7, Apr 12, 2014"
 @c man .\" Please adjust this date whenever revising the manpage.
 @c man .\"
 @c man .\" Some roff macros, for reference:
@@ -4354,7 +4354,7 @@ The timestamps get not automatically propagated from loaded image to newly
 written image. The ones for new images may be set by command -volume_date.
 See there for the meaning of the particular timestamps.
 @c man .TP
-@item -report_system_area "plain"|"help"
+@item -report_system_area "plain"|"help"|"gpt_crc_of:"disk_path
 @kindex -report_system_area  show MBR, GPT, and alike
 @cindex Image, show MBR, GPT, and alike, -pvd_info
 With parameter "plain" print a report about the information found in
@@ -4364,6 +4364,11 @@ many lines with a header text, a colon, and information text.
 With parameter "help" print a text which explains the meaning of the
 lines. You probably will have to look for more documentation which explains
 the technical properties of the mentioned boot facilities.
+@*
+With parameter "gpt_crc_of:"disk_path read up to 32 KiB from the disk file
+with the path given after the colon. Compute the GPT compliant CRC number
+and print it to the result channel. The number is shown like "0x690fd979".
+The special disk_path "-" causes reading from standard input.
 @end table
 @c man .TP
 @c man .B Navigation in ISO image and disk filesystem:
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index 06a83e4b..171bf8d2 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2014.04.11.161139"
+#define Xorriso_timestamP "2014.04.12.130150"