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authorBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2012-04-17 18:35:05 +0200
committerBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2012-04-17 18:35:05 +0200
commit2dab3f5ed31379c3673e2319bbbc7feb2e5c331e (patch)
tree7c2e4ac7f62c563076f8dae1c84d45810983baad /libc
parent81545fb1061b722343f417b8013428928573df9b (diff)
resolv: tiny shrinkage in /etc/hosts handling
-4b Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Diffstat (limited to 'libc')
-rw-r--r--libc/inet/resolv.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/libc/inet/resolv.c b/libc/inet/resolv.c
index e75e94010..e73809875 100644
--- a/libc/inet/resolv.c
+++ b/libc/inet/resolv.c
@@ -1590,7 +1590,7 @@ parser_t * __open_etc_hosts(void)
}
#define MINTOKENS 2 /* ip address + canonical name */
-#define MAXTOKENS (MINTOKENS + MAXALIASES + 1)
+#define MAXTOKENS (MINTOKENS + MAXALIASES)
#define HALISTOFF (sizeof(char*) * MAXTOKENS)
#define INADDROFF (HALISTOFF + 2 * sizeof(char*))
@@ -1604,7 +1604,6 @@ int attribute_hidden __read_etc_hosts_r(
struct hostent **result,
int *h_errnop)
{
- char **alias;
char **tok = NULL;
struct in_addr *h_addr0 = NULL;
const size_t aliaslen = INADDROFF +
@@ -1634,12 +1633,11 @@ int attribute_hidden __read_etc_hosts_r(
*/
parser->data = buf;
parser->data_len = aliaslen;
- memset(buf, '\0', aliaslen); /* make sure alias list is terminated */
parser->line_len = buflen - aliaslen;
*h_errnop = HOST_NOT_FOUND;
/* <ip>[[:space:]][<aliases>] */
- while (config_read(parser, &tok, MAXTOKENS-1, MINTOKENS, "# \t", PARSE_NORMAL)) {
- result_buf->h_aliases = alias = tok+1;
+ while (config_read(parser, &tok, MAXTOKENS, MINTOKENS, "# \t", PARSE_NORMAL)) {
+ result_buf->h_aliases = tok+1;
if (action == GETHOSTENT) {
/* Return whatever the next entry happens to be. */
break;
@@ -1648,8 +1646,11 @@ int attribute_hidden __read_etc_hosts_r(
if (strcmp(name, *tok) != 0)
continue;
} else { /* GET_HOSTS_BYNAME */
- while (*alias) {
- if (strcasecmp(name, *(alias++)) == 0)
+ int aliases = 0;
+ char **alias = tok + 1;
+ while (aliases < MAXALIASES) {
+ char *tmp = *(alias+aliases++);
+ if (tmp && strcasecmp(name, tmp) == 0)
goto found;
}
continue;