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fixed for AIX

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now deal if num_interfaces == 0 (should not happen)
This commit is contained in:
Todd C. Miller
1995-12-22 02:53:12 +00:00
parent fe1e64dcb4
commit 3aba9c4785
1 changed files with 15 additions and 9 deletions
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24
interfaces.c
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@@ -163,10 +163,11 @@ void load_interfaces()
/* set i to the subscript of the next interface */
#ifdef HAVE_SA_LEN
i += sizeof(ifreq.ifr_name) + ifreq.ifr_addr.sa_len;
#else
i += sizeof(struct ifreq);
if (ifreq.ifr_addr.sa_len > sizeof(ifreq.ifr_addr))
i += sizeof(ifreq.ifr_name) + ifreq.ifr_addr.sa_len;
else
#endif /* HAVE_SA_LEN */
i += sizeof(struct ifreq);
/* skip duplicates and interfaces with NULL addresses */
sin = (struct sockaddr_in *) &ifr->ifr_addr;
@@ -231,12 +232,17 @@ void load_interfaces()
/* if there were bogus entries, realloc the array */
if (n != num_interfaces) {
interfaces = (struct interface *) realloc(interfaces,
sizeof(struct interface) * num_interfaces);
if (interfaces == NULL) {
perror("realloc");
(void) fprintf(stderr, "%s: cannot allocate memory!\n", Argv[0]);
exit(1);
/* it is unlikely that num_interfaces will be 0 but who knows... */
if (num_interfaces != 0) {
interfaces = (struct interface *) realloc(interfaces,
sizeof(struct interface) * num_interfaces);
if (interfaces == NULL) {
perror("realloc");
(void) fprintf(stderr, "%s: cannot allocate memory!\n", Argv[0]);
exit(1);
}
} else {
(void) free(interfaces);
}
}
}