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Code Issues Releases Activity

Return EAI_OVERFLOW instead of EAI_MEMORY when the supplied buffer is

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too short.  This conforms to RFC3493, POSIX and XPG6.

Obtained from:	NetBSD
This commit is contained in:
Hajimu UMEMOTO 2006-05-21 11:22:31 +00:00
parent d808369aa1
commit 734aa10414
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=158790
4 changed files with 11 additions and 7 deletions
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7
include/netdb.h
View File

@ -168,9 +168,10 @@ struct addrinfo {
#define EAI_SERVICE 9 /* servname not supported for ai_socktype */
#define EAI_SOCKTYPE 10 /* ai_socktype not supported */
#define EAI_SYSTEM 11 /* system error returned in errno */
#define EAI_BADHINTS 12
#define EAI_PROTOCOL 13
#define EAI_MAX 14
#define EAI_BADHINTS 12 /* invalid value for hints */
#define EAI_PROTOCOL 13 /* resolved protocol is unknown */
#define EAI_OVERFLOW 14 /* argument buffer overflow */
#define EAI_MAX 15
/*
* Flag values for getaddrinfo()

2
lib/libc/net/gai_strerror.3
View File

@ -63,6 +63,8 @@ memory allocation failure
or
.Fa servname
not provided, or not known
.It Dv EAI_OVERFLOW
argument buffer overflow
.It Dv EAI_PROTOCOL
resolved protocol is unknown
.It Dv EAI_SERVICE

3
lib/libc/net/gai_strerror.c
View File

@ -48,7 +48,8 @@ static const char *ai_errlist[] = {
"ai_socktype not supported", /* EAI_SOCKTYPE */
"System error returned in errno", /* EAI_SYSTEM */
"Invalid value for hints", /* EAI_BADHINTS */
"Resolved protocol is unknown" /* EAI_PROTOCOL */
"Resolved protocol is unknown", /* EAI_PROTOCOL */
"Argument buffer overflow" /* EAI_OVERFLOW */
};
const char *

6
lib/libc/net/getnameinfo.c
View File

@ -280,7 +280,7 @@ ip6_parsenumeric(const struct sockaddr *sa, const char *addr,
numaddrlen = strlen(numaddr);
if (numaddrlen + 1 > hostlen) /* don't forget terminator */
return EAI_MEMORY;
return EAI_OVERFLOW;
strlcpy(host, numaddr, hostlen);
if (((const struct sockaddr_in6 *)sa)->sin6_scope_id) {
@ -291,9 +291,9 @@ ip6_parsenumeric(const struct sockaddr *sa, const char *addr,
(const struct sockaddr_in6 *)(const void *)sa,
zonebuf, sizeof(zonebuf), flags);
if (zonelen < 0)
return EAI_MEMORY;
return EAI_OVERFLOW;
if (zonelen + 1 + numaddrlen + 1 > hostlen)
return EAI_MEMORY;
return EAI_OVERFLOW;
/* construct <numeric-addr><delim><zoneid> */
memcpy(host + numaddrlen + 1, zonebuf,