|
From: | Vladimir 'phcoder' Serbinenko |
Subject: | Re: [PATCH 1/3] push/pop errno in initrd read file path |
Date: | Fri, 11 Mar 2016 18:23:21 +0100 |
If you try to load an initrd from http and it errors out we will free the initrd
context but continue on because net_tcp_socket_close() will reset the grub_errno
as will grub_initrd_close(). So we'll lose the errno and return GRUB_ERR_NONE
instead of the original error. Add push/pulls to the appropriate places so we
don't lose our errno. Thanks,
Signed-off-by: Josef Bacik <address@hidden>
---
grub-core/loader/linux.c | 2 ++
grub-core/net/http.c | 2 ++
2 files changed, 4 insertions(+)
diff --git a/grub-core/loader/linux.c b/grub-core/loader/linux.c
index be6fa0f..bd61ca2 100644
--- a/grub-core/loader/linux.c
+++ b/grub-core/loader/linux.c
@@ -202,7 +202,9 @@ grub_initrd_init (int argc, char *argv[],
initrd_ctx->components[i].file = grub_file_open (fname);
if (!initrd_ctx->components[i].file)
{
+ grub_error_push ();
grub_initrd_close (initrd_ctx);
+ grub_error_pop ();
return grub_errno;
}
initrd_ctx->nfiles++;
diff --git a/grub-core/net/http.c b/grub-core/net/http.c
index 4684f8b..0eeb2f6 100644
--- a/grub-core/net/http.c
+++ b/grub-core/net/http.c
@@ -406,7 +406,9 @@ http_establish (struct grub_file *file, grub_off_t offset, int initial)
err = grub_net_send_tcp_packet (data->sock, nb, 1);
if (err)
{
+ grub_error_push ();
grub_net_tcp_close (data->sock, GRUB_NET_TCP_ABORT);
+ grub_error_pop ();
return err;
}
--
2.5.0
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