grub2/0172-Fix-the-looking-up-grub.cfg-XXX-while-tftp-booting.patch
Javier Martinez Canillas 7e98da058f
Cleanup our patchset to reduce the number of patches
This change reorganizes and cleanups our patches to reduce the patch number
from 314 patches to 187. That's achieved by dropping patches that are later
reverted and squashing fixes for earlier patches that introduced features.

There are no code changes and the diff with upstream is the same before and
after the cleanup. Having fewer patches makes easier to manage the patchset
and also will ease to rebase them on top of the latest grub-2.04 release.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
2019-07-16 12:30:06 +02:00

42 lines
1.6 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Date: Tue, 18 Dec 2018 21:27:45 -0500
Subject: [PATCH] Fix the looking up grub.cfg-XXX while tftp booting.
Currently, grub doesn't look up grub.cfg-UUID, grub.cfg-MAC and grub.cfg-IP
while the boot is from tftp. That is because the uuid size is got by
grub_snprintf(, 0, ,), but the grub_snprintf() always returns 0,
so grub judges there's no available uuid in the client and give up
the looking up grub.cfg-XXX.
This issue can be fixed by changing grub_snprintf(, 0, ,) behaivior
to like as snprintf() from glibc, however, somewhere may expect
such argument as the error, so it's risky.
Let's use sizeof() and grub_strlen() to calculate the uuid size
instead of grub_snprintf().
Resolves: rhbz#1658500
---
grub-core/net/net.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/grub-core/net/net.c b/grub-core/net/net.c
index a011b940100..19ff2d486a1 100644
--- a/grub-core/net/net.c
+++ b/grub-core/net/net.c
@@ -1942,11 +1942,9 @@ grub_net_search_configfile (char *config)
char *client_uuid_var;
grub_size_t client_uuid_var_size;
- client_uuid_var_size = grub_snprintf (NULL, 0,
- "net_%s_clientuuid", inf->name);
- if (client_uuid_var_size <= 0)
- continue;
- client_uuid_var_size += 1;
+ client_uuid_var_size = sizeof ("net_") + grub_strlen (inf->name) +
+ sizeof ("_clientuuid") + 1;
+
client_uuid_var = grub_malloc(client_uuid_var_size);
if (!client_uuid_var)
continue;