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Add O_NONBLOCK support to the kernel terminal.

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This commit is contained in:
Jonas 'Sortie' Termansen 2013-03-31 17:28:29 +02:00
parent 514fab5359
commit 0ff17a00c8
1 changed files with 4 additions and 1 deletions
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5
sortix/logterminal.cpp
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@ -1,6 +1,6 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2012.
Copyright(C) Jonas 'Sortie' Termansen 2012, 2013.
This file is part of Sortix.
@ -32,6 +32,7 @@
#include <sortix/kernel/poll.h>
#include <sortix/kernel/scheduler.h>
#include <sortix/fcntl.h>
#include <sortix/termmode.h>
#include <sortix/termios.h>
#include <sortix/keycodes.h>
@ -237,6 +238,8 @@ ssize_t LogTerminal::read(ioctx_t* ctx, uint8_t* userbuf, size_t count)
bool blocking = !(termmode & TERMMODE_NONBLOCK);
while ( left && !linebuffer.CanPop() && blocking && !numeofs )
{
if ( ctx->dflags & O_NONBLOCK )
return errno = EWOULDBLOCK, -1;
numwaiting++;
bool abort = !kthread_cond_wait_signal(&datacond, &termlock);
numwaiting--;