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don't call freeaddinfo(NULL)

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Signed-off-by: Vitaly Magerya <vmagerya@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Vitaly Magerya 2011-03-22 20:14:26 +01:00 committed by Denys Vlasenko
parent cf9074b54b
commit 7f4b769c42
3 changed files with 14 additions and 11 deletions
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16
libbb/inet_common.c
View File

@ -164,17 +164,17 @@ char* FAST_FUNC INET_rresolve(struct sockaddr_in *s_in, int numeric, uint32_t ne
int FAST_FUNC INET6_resolve(const char *name, struct sockaddr_in6 *sin6)
{
struct addrinfo req, *ai;
struct addrinfo req, *ai = NULL;
int s;
memset(&req, '\0', sizeof req);
memset(&req, 0, sizeof(req));
req.ai_family = AF_INET6;
s = getaddrinfo(name, NULL, &req, &ai);
if (s) {
if (s != 0) {
bb_error_msg("getaddrinfo: %s: %d", name, s);
return -1;
}
memcpy(sin6, ai->ai_addr, sizeof(struct sockaddr_in6));
memcpy(sin6, ai->ai_addr, sizeof(*sin6));
freeaddrinfo(ai);
return 0;
}
@ -209,9 +209,11 @@ char* FAST_FUNC INET6_rresolve(struct sockaddr_in6 *sin6, int numeric)
return xstrdup("*");
}
s = getnameinfo((struct sockaddr *) sin6, sizeof(struct sockaddr_in6),
name, sizeof(name), NULL, 0, 0);
if (s) {
s = getnameinfo((struct sockaddr *) sin6, sizeof(*sin6),
name, sizeof(name),
/*serv,servlen:*/ NULL, 0,
0);
if (s != 0) {
bb_error_msg("getnameinfo failed");
return NULL;
}

5
libbb/xconnect.c
View File

@ -255,7 +255,7 @@ IF_NOT_FEATURE_IPV6(sa_family_t af = AF_INET;)
memset(&hint, 0 , sizeof(hint));
hint.ai_family = af;
/* Needed. Or else we will get each address thrice (or more)
/* Need SOCK_STREAM, or else we get each address thrice (or more)
* for each possible socket type (tcp,udp,raw...): */
hint.ai_socktype = SOCK_STREAM;
hint.ai_flags = ai_flags & ~DIE_ON_ERROR;
@ -285,7 +285,8 @@ IF_NOT_FEATURE_IPV6(sa_family_t af = AF_INET;)
set_port:
set_nport(r, htons(port));
ret:
freeaddrinfo(result);
if (result)
freeaddrinfo(result);
return r;
}
#if !ENABLE_FEATURE_IPV6

4
networking/nslookup.c
View File

@ -66,7 +66,7 @@ static int print_host(const char *hostname, const char *header)
// hint.ai_flags = AI_CANONNAME;
rc = getaddrinfo(hostname, NULL /*service*/, &hint, &result);
if (!rc) {
if (rc == 0) {
struct addrinfo *cur = result;
unsigned cnt = 0;
@ -94,7 +94,7 @@ static int print_host(const char *hostname, const char *header)
bb_error_msg("can't resolve '%s'", hostname);
#endif
}
if (ENABLE_FEATURE_CLEAN_UP)
if (ENABLE_FEATURE_CLEAN_UP && result)
freeaddrinfo(result);
return (rc != 0);
}