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Commit cad19fa6 authored by Devendra Naga's avatar Devendra Naga Committed by Wim Van Sebroeck
Browse files

Documentation/watchdog: Fix the file descriptor leak when no cmdline arg given 



we start a infinite loop when user gives ./watchdog-test, and when user
ctrl + c's the program, we just exit immeadiately with out closing the
filedescriptor of the watchdog device. a signal handler is used to
do the job of closing the filedescriptor and exiting the program.

Signed-off-by: default avatarDevendra Naga <devendra.aaru@gmail.com>
Signed-off-by: default avatarWim Van Sebroeck <wim@iguana.be>
parent 3c2a6186

Documentation/watchdog/src/watchdog-test.c

+11 −0
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ 
#include <string.h>

#include <unistd.h>

#include <fcntl.h>

#include <signal.h>

#include <sys/ioctl.h>

#include <linux/types.h>

#include <linux/watchdog.h>
@@ -29,6 +30,14 @@ static void keep_alive(void) 
 * The main program.  Run the program with "-d" to disable the card,

 * or "-e" to enable the card.

 */



void term(int sig)

{

    close(fd);

    fprintf(stderr, "Stopping watchdog ticks...\n");

    exit(0);

}



int main(int argc, char *argv[])

{

    int flags;
@@ -65,6 +74,8 @@ int main(int argc, char *argv[]) 
	fflush(stderr);

    }



    signal(SIGINT, term);



    while(1) {

	keep_alive();

	sleep(1);