2009-06-08 Felix Zielcke <fziel...@z-51.de>
* include/grub/util/hostdisk.c
(grub_make_system_path_relative_to_its_root): New function
prototype.
* util/hostdisk.c (grub_make_system_path_relative_to_its_root):
New function.
* util/i386/pc/grub-setup.c (setup): Use
grub_make_system_path_relative_to_its_root to make core_path_dev
relative to the partition.
diff --git a/util/hostdisk.c b/util/hostdisk.c
index a7262dd..0a786ba 100644
--- a/util/hostdisk.c
+++ b/util/hostdisk.c
@@ -1076,3 +1076,39 @@ grub_util_biosdisk_get_grub_dev (const char *os_dev)
return make_device_name (drive, -1, -1);
#endif
}
+
+char *grub_make_system_path_relative_to_its_root (char *path)
+{
+
+ struct stat st;
+ char buf[500], buf2[500];
Use malloc instead of static allocation
+ p = strrchr (buf, '/');
+ if (p != buf)
+ *p = 0;
+ else *++p = 0;
You assume path starts with /. You have to check this. Otherwise you
may get sigsegv
+ strcpy(buf2,buf);
Just save (p - buf) instead of copying buf to buf2
On Mon, Jun 8, 2009 at 11:20 PM, Felix Zielcke<fziel...@z-51.de> wrote:
> Am Montag, den 01.06.2009, 21:39 +0200 schrieb Felix Zielcke:
>> Am Mittwoch, den 06.05.2009, 17:12 +0200 schrieb Vladimir 'phcoder'
>> Serbinenko:
>> > Don't we already have a function which transforms host directory into
>> > grub
>> > directory? AFAIR we have.
>>
>> There's just the shell function in grub-mkconfig_lib.in
>> Here's now a patch wich implements it in util/hostdisk.c and gets used
>> for core_path_dev in setup ().
>> But it doestn't work with symlinks.
>> readlink () can only be used if the file pointed to is a symlink, not if
>> a symlink is somewhere in between.
>> coreutils where the readlink binary is from is GPL 3+ but the function
>> for it uses hash tables and it seems like it would be too much code to
>> copy just for this.
>
> Here's a new patch which prints out an error if stat () fails.
> --
> Felix Zielcke
>
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> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>
>
--
Regards
Vladimir 'phcoder' Serbinenko
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