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Thorough clean-up following 8270648da1.

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This commit is contained in:
Simon Kelley
2020-06-20 22:30:12 +01:00
parent 8270648da1
commit e2cb655958
1 changed files with 27 additions and 26 deletions
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35
src/dnsmasq.c
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@@ -1864,15 +1864,6 @@ static void check_dns_listeners(time_t now)
else else
{ {
int i; int i;
for (i = 0; i < MAX_PROCS; i++)
if (daemon->tcp_pids[i] == 0 && daemon->tcp_pipes[i] == -1)
{
char a;
(void)a; /* suppress potential unused warning */
daemon->tcp_pids[i] = p;
daemon->tcp_pipes[i] = pipefd[0];
#ifdef HAVE_LINUX_NETWORK #ifdef HAVE_LINUX_NETWORK
/* The child process inherits the netlink socket, /* The child process inherits the netlink socket,
which it never uses, but when the parent (us) which it never uses, but when the parent (us)
@@ -1887,8 +1878,16 @@ static void check_dns_listeners(time_t now)
single byte comes back up the pipe, which single byte comes back up the pipe, which
is sent by the child after it has closed the is sent by the child after it has closed the
netlink socket. */ netlink socket. */
while(retry_send(read(pipefd[0], &a, 1)));
unsigned char a;
read_write(pipefd[0], &a, 1, 1);
#endif #endif
for (i = 0; i < MAX_PROCS; i++)
if (daemon->tcp_pids[i] == 0 && daemon->tcp_pipes[i] == -1)
{
daemon->tcp_pids[i] = p;
daemon->tcp_pipes[i] = pipefd[0];
break; break;
} }
} }
@@ -1920,16 +1919,16 @@ static void check_dns_listeners(time_t now)
terminate the process. */ terminate the process. */
if (!option_bool(OPT_DEBUG)) if (!option_bool(OPT_DEBUG))
{ {
char a = 0; #ifdef HAVE_LINUX_NETWORK
(void)a; /* suppress potential unused warning */ /* See comment above re: netlink socket. */
unsigned char a = 0;
close(daemon->netlinkfd);
read_write(pipefd[1], &a, 1, 0);
#endif
alarm(CHILD_LIFETIME); alarm(CHILD_LIFETIME);
close(pipefd[0]); /* close read end in child. */ close(pipefd[0]); /* close read end in child. */
daemon->pipe_to_parent = pipefd[1]; daemon->pipe_to_parent = pipefd[1];
#ifdef HAVE_LINUX_NETWORK
/* See comment above re netlink socket. */
close(daemon->netlinkfd);
while(retry_send(write(pipefd[1], &a, 1)));
#endif
} }
/* start with no upstream connections. */ /* start with no upstream connections. */
@@ -1956,8 +1955,10 @@ static void check_dns_listeners(time_t now)
shutdown(s->tcpfd, SHUT_RDWR); shutdown(s->tcpfd, SHUT_RDWR);
close(s->tcpfd); close(s->tcpfd);
} }
if (!option_bool(OPT_DEBUG)) if (!option_bool(OPT_DEBUG))
{ {
close(daemon->pipe_to_parent);
flush_log(); flush_log();
_exit(0); _exit(0);
} }