33 lines
1.1 KiB
Text
33 lines
1.1 KiB
Text
- Close file descriptors on exec
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Avoid FD leakage to children.
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--- common.c.orig Sun Jan 10 00:44:14 2016
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+++ common.c Sun Jan 10 00:46:53 2016
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@@ -1115,7 +1115,7 @@ getifhwaddr(const char *ifname, char *buf, u_int16_t *
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(void) snprintf(fname, sizeof (fname), "/dev/%s", ifname);
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getctl.maxlen = sizeof (getbuf);
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getctl.buf = (char *)getbuf;
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- if ((fd = open(fname, O_RDWR)) == -1) {
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+ if ((fd = open(fname, O_RDWR | O_CLOEXEC)) == -1) {
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dl_attach_req_t dlar;
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cp = fname + strlen(fname) - 1;
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@@ -1131,7 +1131,7 @@ getifhwaddr(const char *ifname, char *buf, u_int16_t *
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cp++;
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dlar.dl_ppa = atoi(cp);
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*cp = '\0';
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- if ((fd = open(fname, O_RDWR)) == -1)
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+ if ((fd = open(fname, O_RDWR | O_CLOEXEC)) == -1)
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return (-1);
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dlar.dl_primitive = DL_ATTACH_REQ;
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putctl.len = sizeof (dlar);
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@@ -3292,7 +3292,7 @@ ifaddrconf(cmd, ifname, addr, plen, pltime, vltime)
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return (-1);
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}
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- if ((s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
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+ if ((s = socket(PF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, IPPROTO_UDP)) < 0) {
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dprintf(LOG_ERR, FNAME, "can't open a temporary socket: %s",
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strerror(errno));
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return (-1);
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