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res_init()/res_ninit() could leak memory when re-called.
This commit is contained in:
Mark Andrews 2005-09-09 00:33:22 +00:00
parent cf0bcc2c80
commit 475c811bfd
1 changed files with 15 additions and 6 deletions
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21
lib/bind/resolv/res_init.c
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@ -70,7 +70,7 @@
#if defined(LIBC_SCCS) && !defined(lint)
static const char sccsid[] = "@(#)res_init.c 8.1 (Berkeley) 6/7/93";
static const char rcsid[] = "$Id: res_init.c,v 1.18 2005/07/28 06:51:51 marka Exp $";
static const char rcsid[] = "$Id: res_init.c,v 1.19 2005/09/09 00:33:22 marka Exp $";
#endif /* LIBC_SCCS and not lint */
#include "port_before.h"
@ -167,6 +167,9 @@ __res_vinit(res_state statp, int preinit) {
int dots;
union res_sockaddr_union u[2];
if (statp->_u._ext.ext != NULL)
res_ndestroy(statp);
if (!preinit) {
statp->retrans = RES_TIMEOUT;
statp->retry = RES_DFLRETRY;
@ -174,9 +177,6 @@ __res_vinit(res_state statp, int preinit) {
statp->id = res_randomid();
}
if ((statp->options & RES_INIT) != 0U)
res_ndestroy(statp);
memset(u, 0, sizeof(u));
#ifdef USELOOPBACK
u[nserv].sin.sin_addr = inet_makeaddr(IN_LOOPBACKNET, 1);
@ -240,12 +240,12 @@ __res_vinit(res_state statp, int preinit) {
if (strlcpy(statp->defdname, buf,
sizeof(statp->defdname))
>= sizeof(statp->defdname))
return (-1);
goto freedata;
} else {
if (strlcpy(statp->defdname, cp+1,
sizeof(statp->defdname))
>= sizeof(statp->defdname))
return (-1);
goto freedata;
}
}
}
@ -489,6 +489,15 @@ __res_vinit(res_state statp, int preinit) {
res_setoptions(statp, cp, "env");
statp->options |= RES_INIT;
return (0);
#ifdef SOLARIS2
freedata:
if (statp->_u._ext.ext != NULL) {
free(statp->_u._ext.ext);
statp->_u._ext.ext = NULL;
}
return (-1);
#endif
}
static void