See ChangeLog for description. I'd really like to receive some review on
this one, since the code it touches is so fragile (although I tested it on a
typical setup and it works).
--
Robert Millan
<GPLv2> I know my rights; I want my phone call!
<DRM> What good is a phone call… if you are unable to speak?
(as seen on /.)
2008-07-01 Robert Millan <[EMAIL PROTECTED]>
This fixes a performance issue when pc & gpt partmap iterators
didn't abort iteration even after our hook found what it was
looking for (often causing expensive probes of non-existant drives).
The probe functions relied on previous buggy behaviour, since they
would rise an error when their own hook (find_func()) caused early
abortion of its iteration.
* kern/device.c (grub_device_open): Improve error message.
* partmap/pc.c (pc_partition_map_iterate): Abort parent iteration
when hook requests it, independently of grub_errno.
(pc_partition_map_probe): Do not fail when find_func() caused
early abortion of pc_partition_map_iterate().
* partmap/gpt.c (gpt_partition_map_iterate): Abort parent iteration
when hook requests it, independently of grub_errno.
(gpt_partition_map_probe): Do not fail when find_func() caused
early abortion of gpt_partition_map_iterate().
diff -x debian -x ChangeLog -x configure -x config.h.in -x CVS -x '*~' -x '*.mk' -urp ../grub2/kern/device.c ./kern/device.c
--- ../grub2/kern/device.c 2008-01-10 00:25:54.000000000 +0100
+++ ./kern/device.c 2008-06-30 14:15:19.000000000 +0200
@@ -50,7 +50,7 @@ grub_device_open (const char *name)
disk = grub_disk_open (name);
if (! disk)
{
- grub_error (GRUB_ERR_BAD_DEVICE, "unknown device");
+ grub_error (GRUB_ERR_BAD_DEVICE, "unknown device %s", name);
goto fail;
}
diff -x debian -x ChangeLog -x configure -x config.h.in -x CVS -x '*~' -x '*.mk' -urp ../grub2/partmap/gpt.c ./partmap/gpt.c
--- ../grub2/partmap/gpt.c 2008-02-23 21:33:32.000000000 +0100
+++ ./partmap/gpt.c 2008-07-01 15:06:31.000000000 +0200
@@ -102,7 +102,7 @@ gpt_partition_map_iterate (grub_disk_t d
i, part.start, part.len);
if (hook (disk, &part))
- return grub_errno;
+ return 1;
}
last_offset += grub_le_to_cpu32 (gpt.partentry_size);
@@ -150,8 +150,7 @@ gpt_partition_map_probe (grub_disk_t dis
return 0;
}
- if (gpt_partition_map_iterate (disk, find_func))
- goto fail;
+ gpt_partition_map_iterate (disk, find_func);
return p;
diff -x debian -x ChangeLog -x configure -x config.h.in -x CVS -x '*~' -x '*.mk' -urp ../grub2/partmap/pc.c ./partmap/pc.c
--- ../grub2/partmap/pc.c 2007-07-22 01:32:30.000000000 +0200
+++ ./partmap/pc.c 2008-07-01 15:06:03.000000000 +0200
@@ -151,7 +151,7 @@ pc_partition_map_iterate (grub_disk_t di
pcdata.dos_part++;
if (hook (disk, &p))
- goto finish;
+ return 1;
/* Check if this is a BSD partition. */
if (grub_pc_partition_is_bsd (e->type))
@@ -255,8 +255,7 @@ pc_partition_map_probe (grub_disk_t disk
return 0;
pcdata = p->data;
- if (pc_partition_map_iterate (disk, find_func))
- goto fail;
+ pc_partition_map_iterate (disk, find_func);
if (p->index < 0)
{
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