Attachment 12497 Details for Bug 12269 – patch for 4.4

[patch] patch for 4.4

segfault_nss_wins-v4-4.patch (text/plain), 4.63 KB, created by Andreas Schneider on 2016-09-20 08:28:15 UTC

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Creator: Andreas Schneider

Created: 2016-09-20 08:28:15 UTC

Size: 4.63 KB

patch

obsolete

>From 33bc85d9060340e4ce3d2edecb3fb76dd85a5195 Mon Sep 17 00:00:00 2001
>From: Andreas Schneider <asn@samba.org>
>Date: Mon, 19 Sep 2016 16:17:11 +0200
>Subject: [PATCH] nsswitch: Add missing arguments to wins gethostbyname*
>
>The errno pointer argument is missing.
>
>BUG: https://bugzilla.samba.org/show_bug.cgi?id=12269
>
>Signed-off-by: Andreas Schneider <asn@samba.org>
>Reviewed-by: Jeremy Allison <jra@samba.org>
>Reviewed-by: Jim McDonough <jmcd@samba.org>
>(cherry picked from commit 124ae4e861f048fe015bff32ace4abff4d3e6c62)
>---
> nsswitch/wins.c | 51 +++++++++++++++++++++++++++++++++++++++++----------
> 1 file changed, 41 insertions(+), 10 deletions(-)
>
>diff --git a/nsswitch/wins.c b/nsswitch/wins.c
>index fc65c03..be84f2e 100644
>--- a/nsswitch/wins.c
>+++ b/nsswitch/wins.c
>@@ -39,10 +39,19 @@ static pthread_mutex_t wins_nss_mutex = PTHREAD_MUTEX_INITIALIZER;
> #define INADDRSZ 4
> #endif
> 
>-NSS_STATUS _nss_wins_gethostbyname_r(const char *hostname, struct hostent *he,
>-			  char *buffer, size_t buflen, int *h_errnop);
>-NSS_STATUS _nss_wins_gethostbyname2_r(const char *name, int af, struct hostent *he,
>-			   char *buffer, size_t buflen, int *h_errnop);
>+NSS_STATUS _nss_wins_gethostbyname_r(const char *hostname,
>+				     struct hostent *he,
>+				     char *buffer,
>+				     size_t buflen,
>+				     int *errnop,
>+				     int *h_errnop);
>+NSS_STATUS _nss_wins_gethostbyname2_r(const char *name,
>+				      int af,
>+				      struct hostent *he,
>+				      char *buffer,
>+				      size_t buflen,
>+				      int *errnop,
>+				      int *h_errnop);
> 
> static char *lookup_byname_backend(const char *name)
> {
>@@ -225,8 +234,12 @@ gethostbyname() - we ignore any domain portion of the name and only
> handle names that are at most 15 characters long
>   **************************************************************************/
> NSS_STATUS
>-_nss_wins_gethostbyname_r(const char *hostname, struct hostent *he,
>-			  char *buffer, size_t buflen, int *h_errnop)
>+_nss_wins_gethostbyname_r(const char *hostname,
>+			  struct hostent *he,
>+			  char *buffer,
>+			  size_t buflen,
>+			  int *errnop,
>+			  int *h_errnop)
> {
> 	NSS_STATUS nss_status = NSS_STATUS_SUCCESS;
> 	char *ip;
>@@ -247,6 +260,7 @@ _nss_wins_gethostbyname_r(const char *hostname, struct hostent *he,
> 
> 	ip = lookup_byname_backend(name);
> 	if (ip == NULL) {
>+		*errnop = EINVAL;
> 		nss_status = NSS_STATUS_NOTFOUND;
> 		goto out;
> 	}
>@@ -254,6 +268,7 @@ _nss_wins_gethostbyname_r(const char *hostname, struct hostent *he,
> 	rc = inet_pton(AF_INET, ip, &in);
> 	wbcFreeMemory(ip);
> 	if (rc == 0) {
>+		*errnop = errno;
> 		nss_status = NSS_STATUS_TRYAGAIN;
> 		goto out;
> 	}
>@@ -263,6 +278,7 @@ _nss_wins_gethostbyname_r(const char *hostname, struct hostent *he,
> 	namelen = strlen(name) + 1;
> 
> 	if ((he->h_name = get_static(&buffer, &buflen, namelen)) == NULL) {
>+		*errnop = EAGAIN;
> 		nss_status = NSS_STATUS_TRYAGAIN;
> 		goto out;
> 	}
>@@ -275,18 +291,21 @@ _nss_wins_gethostbyname_r(const char *hostname, struct hostent *he,
> 		i = sizeof(char*) - i;
> 
> 	if (get_static(&buffer, &buflen, i) == NULL) {
>+		*errnop = EAGAIN;
> 		nss_status = NSS_STATUS_TRYAGAIN;
> 		goto out;
> 	}
> 
> 	if ((he->h_addr_list = (char **)get_static(
> 		     &buffer, &buflen, 2 * sizeof(char *))) == NULL) {
>+		*errnop = EAGAIN;
> 		nss_status = NSS_STATUS_TRYAGAIN;
> 		goto out;
> 	}
> 
> 	if ((he->h_addr_list[0] = get_static(&buffer, &buflen,
> 					     INADDRSZ)) == NULL) {
>+		*errnop = EAGAIN;
> 		nss_status = NSS_STATUS_TRYAGAIN;
> 		goto out;
> 	}
>@@ -306,12 +325,14 @@ _nss_wins_gethostbyname_r(const char *hostname, struct hostent *he,
> 		i = sizeof(char*) - i;
> 
> 	if (get_static(&buffer, &buflen, i) == NULL) {
>+		*errnop = EAGAIN;
> 		nss_status = NSS_STATUS_TRYAGAIN;
> 		goto out;
> 	}
> 
> 	if ((he->h_aliases = (char **)get_static(
> 		     &buffer, &buflen, sizeof(char *))) == NULL) {
>+		*errnop = EAGAIN;
> 		nss_status = NSS_STATUS_TRYAGAIN;
> 		goto out;
> 	}
>@@ -330,17 +351,27 @@ _nss_wins_gethostbyname_r(const char *hostname, struct hostent *he,
> 
> 
> NSS_STATUS
>-_nss_wins_gethostbyname2_r(const char *name, int af, struct hostent *he,
>-			   char *buffer, size_t buflen, int *h_errnop)
>+_nss_wins_gethostbyname2_r(const char *name,
>+			   int af,
>+			   struct hostent *he,
>+			   char *buffer,
>+			   size_t buflen,
>+			   int *errnop,
>+			   int *h_errnop)
> {
> 	NSS_STATUS nss_status;
> 
> 	if(af!=AF_INET) {
>+		*errnop = EAFNOSUPPORT;
> 		*h_errnop = NO_DATA;
> 		nss_status = NSS_STATUS_UNAVAIL;
> 	} else {
>-		nss_status = _nss_wins_gethostbyname_r(
>-				name, he, buffer, buflen, h_errnop);
>+		nss_status = _nss_wins_gethostbyname_r(name,
>+						       he,
>+						       buffer,
>+						       buflen,
>+						       errnop,
>+						       h_errnop);
> 	}
> 	return nss_status;
> }
>-- 
>2.10.0
>

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Attachments on bug 12269: 12495 | 12497 | 12503 | 12504 | 12657 | 12683 | 12684