mirrors-yuzu-emu/mbedtls
1
0
Fork 0
mirror of https://github.com/yuzu-emu/mbedtls synced 2024-11-24 09:48:31 +00:00
Code Issues Projects Releases Packages Wiki Activity

Backup errno in net_would_block

Browse source 
Safe and restore the value of errno in net_would_block to be sure
it's not affected by the guarding call to fcntl. Fixes #845.
This commit is contained in:
Hanno Becker 2017-05-04 13:39:22 +01:00
parent b65c2be5f1
commit a6ed9c5429
2 changed files with 12 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
ChangeLog
View file

@ -1,5 +1,11 @@
mbed TLS ChangeLog (Sorted per branch, date)
= mbed TLS x.x.x branch released xxxx-xx-xx
Bugfix
* Fix net_would_block to avoid modification by errno through fcntl call.
Found by nkolban. Fixes #845.
= mbed TLS 2.4.2 branch released 2017-03-08
Security

7
library/net_sockets.c
View file

@ -270,13 +270,18 @@ static int net_would_block( const mbedtls_net_context *ctx )
*/
static int net_would_block( const mbedtls_net_context *ctx )
{
int err = errno;
/*
* Never return 'WOULD BLOCK' on a non-blocking socket
*/
if( ( fcntl( ctx->fd, F_GETFL ) & O_NONBLOCK ) != O_NONBLOCK )
{
errno = err;
return( 0 );
}
switch( errno )
switch( errno = err )
{
#if defined EAGAIN
case EAGAIN: