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-rw-r--r--avahi-dnsconfd/main.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/avahi-dnsconfd/main.c b/avahi-dnsconfd/main.c
index 90cd55c..99bae64 100644
--- a/avahi-dnsconfd/main.c
+++ b/avahi-dnsconfd/main.c
@@ -115,6 +115,20 @@ static DNSServerInfo* new_server_info(gint interface, guchar protocol, const gch
return i;
}
+static int set_cloexec(int fd) {
+ int n;
+
+ assert(fd >= 0);
+
+ if ((n = fcntl(fd, F_GETFD)) < 0)
+ return -1;
+
+ if (n & FD_CLOEXEC)
+ return 0;
+
+ return fcntl(fd, F_SETFD, n|FD_CLOEXEC);
+}
+
static int open_socket(void) {
int fd = -1;
struct sockaddr_un sa;
@@ -124,7 +138,7 @@ static int open_socket(void) {
goto fail;
}
- if (avahi_set_cloexec(fd) < 0) {
+ if (set_cloexec(fd) < 0) {
daemon_log(LOG_ERR, "fcntl(): %s", strerror(errno));
goto fail;
}