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Make background() idempotent in a cleaner way.

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This commit is contained in:
Nicholas J. Kain 2010-11-12 19:50:04 -05:00
parent 5f55dbc3ff
commit 9ce31ec4d8
1 changed files with 3 additions and 2 deletions
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ndhc/ndhc.c
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@ -188,11 +188,12 @@ static void signal_handler(int sig)
static void background(void) static void background(void)
{ {
if (daemon(0, 0) == -1) { static char called;
if (!called && daemon(0, 0) == -1) {
perror("fork"); perror("fork");
exit(EXIT_SUCCESS); exit(EXIT_SUCCESS);
} }
client_config.foreground = 1; /* Do not fork again. */ called = 1; /* Do not fork again. */
} }
static void handle_timeout(void) static void handle_timeout(void)