Displaying 10 results from an estimated 10 matches for "orig_gpt_size".
2011 Aug 05
3
isolinux: Generate GPT and Mac bootable images
...start/2048 - 10);
+ part->status = bendian_int(0x01);
+ }
+}
+
int
main(int argc, char *argv[])
{
int i = 0;
FILE *fp = NULL;
- struct stat isostat;
uint8_t *buf = NULL, *bufz = NULL;
- int cylsize = 0, frac = 0, padding = 0;
+ int cylsize = 0, frac = 0;
+ size_t orig_gpt_size, free_space, gpt_size;
+ struct iso_primary_descriptor descriptor;
prog = strcpy(alloca(strlen(argv[0]) + 1), argv[0]);
i = check_option(argc, argv);
@@ -450,10 +855,21 @@ main(int argc, char *argv[])
usage();
return 1;
}
+
+ if ((mode & EFI) &&...
2014 May 12
4
[PATCH] isohybrid: fix overflow on 32 bit system
...t;
#include <unistd.h>
+#include <limits.h>
#include <sys/stat.h>
#include <inttypes.h>
#include <uuid/uuid.h>
@@ -888,7 +889,7 @@ main(int argc, char *argv[])
FILE *fp = NULL;
uint8_t *buf = NULL, *bufz = NULL;
int cylsize = 0, frac = 0;
- size_t orig_gpt_size, free_space, gpt_size;
+ size_t orig_gpt_size, free_space, gpt_size, real_offset;
struct iso_primary_descriptor descriptor;
prog = strcpy(alloca(strlen(argv[0]) + 1), argv[0]);
@@ -1125,9 +1126,16 @@ main(int argc, char *argv[])
* Seek far enough back that the gpt header is 512 by...
2014 Jun 22
0
[PATCH 5/6] utils/isohybrid.c: Change all fseek(3) to fseeko(3)
...)
initialise_apm(buf, APM_OFFSET);
- fseek(fp, APM_OFFSET, SEEK_SET);
+ fseeko(fp, (off_t) APM_OFFSET, SEEK_SET);
fwrite(buf, sizeof(char), apm_size, fp);
}
@@ -1132,8 +1132,7 @@ main(int argc, char *argv[])
* end of the image
*/
- if (fseeko(fp, (isostat.st_size + padding) - orig_gpt_size,
- SEEK_SET))
+ if (fseeko(fp, (isostat.st_size + padding) - orig_gpt_size, SEEK_SET))
err(1, "%s: seek error - 8", argv[0]);
if (fwrite(buf, sizeof(char), orig_gpt_size, fp) != orig_gpt_size)
--
1.8.4.2
2014 Jun 22
16
Announcing a patch series for isohybrid.c
Hi,
following will be 6 patch proposals for isohybrid.c
1: Encode GPT partition names as UTF-16LE
2: Correct blocking factor in APM partition block counts
3: Correct end block address of first GPT partition
4: Write GPT backup to the very end of the image
5: Change all fseek(3) to fseeko(3)
6: Introduce option --mbr and make isohybrid.c compilable standalone
If the form needs adjustments,
2014 Jun 22
0
[PATCH 4/6] utils/isohybrid.c: Write GPT backup to the very end of the image
...e
*/
- initialise_gpt(buf, 1, (isostat.st_size + padding - 1024) / 512, 1);
+ initialise_gpt(buf, 1, (isostat.st_size + padding - 512) / 512, 1);
if (fseek(fp, 512, SEEK_SET))
err(1, "%s: seek error - 6", argv[0]);
@@ -1122,7 +1122,7 @@ main(int argc, char *argv[])
buf += orig_gpt_size - sizeof(struct gpt_header);
- initialise_gpt(buf, (isostat.st_size + padding - 1024) / 512, 1, 0);
+ initialise_gpt(buf, (isostat.st_size + padding - 512) / 512, 1, 0);
/* Shift back far enough to write the 128 GPT entries */
buf -= 128 * sizeof(struct gpt_part_header);
@@ -1132,7 +1132,7...
2012 May 06
1
isohybrid.c, problem reports and questions
Hi,
i am currently exploring the boot data of Matthew Garret's Fedora LiveCD.
For that i read utils/isohybrid.c from git resp. 4.05.
(I assume Matthew used options --efi --mac --type 0 .)
Some stumblestones showed up:
-----------------------------------------------------------------------
In initialise_gpt() i see unhealthy usage of string constants. Like:
memcpy(part->name,
2014 Jun 20
3
[PATCH] isohybrid: fix overflow on 32 bit system
...ile changed, 1 insertion(+), 1 deletion(-)
diff --git a/utils/isohybrid.c b/utils/isohybrid.c
index 410bb60..23fc6c0 100644
--- a/utils/isohybrid.c
+++ b/utils/isohybrid.c
@@ -1126,7 +1126,7 @@ main(int argc, char *argv[])
* end of the image
*/
- if (fseek(fp, (isostat.st_size + padding) - orig_gpt_size - 512,
+ if (fseeko(fp, (isostat.st_size + padding) - orig_gpt_size - 512,
SEEK_SET))
err(1, "%s: seek error - 8", argv[0]);
--
1.9.1
2015 Feb 20
0
isohybrid and ISO images whose size is not a multiple of 2048 bytes vs. VirtualBox
>
> Same result as yours.
>
>
> Have a nice day :)
>
> Thomas
>
I was under the impression (apparently the wrong one) that your
pseudo-code was adding 4 cylinders to the first example, from 132 to
136, which would be non-optimal. Since I am not a developer, I believe
you when you say that such jump won't happen :). Perhaps the code will
be more clear to me
2015 Feb 20
2
isohybrid and ISO images whose size is not a multiple of 2048 bytes vs. VirtualBox
Hi,
my proposal is based on a mathematical proof (see mail
before) and yours is correct too. They cannot but match.
Let's inspect your examples:
Ady wrote:
> ISO size: 1'085'736'960 bytes ( > 1GiB)
This are exactly 132 cylinders of 255x63.
132 is divisible by 4. So there is no padding needed.
> Cylinders (1st attempt)=132
> [...]
> 2120580 / 4 = 530145, so
2015 Feb 20
4
isohybrid and ISO images whose size is not a multiple of 2048 bytes vs. VirtualBox
...0 +0100
+++ isohybrid_test.c 2015-02-20 11:01:33.000000000 +0100
@@ -947,7 +947,7 @@ main(int argc, char *argv[])
int i = 0;
FILE *fp = NULL;
uint8_t *buf = NULL, *bufz = NULL;
- int cylsize = 0, frac = 0;
+ int cylsize = 0, frac = 0, align_factor, align_cylsize;
size_t orig_gpt_size, free_space, gpt_size;
struct iso_primary_descriptor descriptor;
@@ -1058,9 +1058,20 @@ main(int argc, char *argv[])
isosize = lendian_int(descriptor.size) * lendian_short(descriptor.block_size);
free_space = isostat.st_size - isosize;
+ /* Making sure that the resulting image...