Shell: Handle aborting loops better

It's easy to get stuck in an infinite loop in the hush shell:

while true; do sleep 1; done

The 'sleep' command will check for ctrl-c with the ctrlc() function. This
will abort the sleep command. Hush then checks for ctrl-c again in the
loop. The ctrl-c in the buffer has already been eaten by the sleep
command, so the loop will continue.

With this patch we remember the presence of a ctrl-c character in a
variable instead of checking for a new character each time. The
variable must be resetted explicitly by calling ctrlc_handled() which
will be called by the shell in the outer loop.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/sandbox/os/common.c b/arch/sandbox/os/common.c
index 665e8194ef..a7ea8f2d3b 100644
--- a/arch/sandbox/os/common.c
+++ b/arch/sandbox/os/common.c
@@ -94,7 +94,7 @@ int linux_tstc(int fd)
 	return 0;
 }
 
-int ctrlc(void)
+int arch_ctrlc(void)
 {
 	char chr;