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authorYang Tse <yangsita@gmail.com>2007-02-16 15:04:44 (GMT)
committerYang Tse <yangsita@gmail.com>2007-02-16 15:04:44 (GMT)
commit69fa44735497e10ca7c49075455da1370b7d7484 (patch)
tree35a7749e2b33d5bdcbf755853873e19012781f75 /inet_net_pton.c
parent10a035e128165a09d7d7a0958ac5c706bf41a6ab (diff)
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use macros ERRNO, SET_ERRNO(), SOCKERRNO and SET_SOCKERRNO() for errno handling
Diffstat (limited to 'inet_net_pton.c')
-rw-r--r--inet_net_pton.c24
1 files changed, 17 insertions, 7 deletions
diff --git a/inet_net_pton.c b/inet_net_pton.c
index 49bac69..af941bf 100644
--- a/inet_net_pton.c
+++ b/inet_net_pton.c
@@ -66,6 +66,11 @@
* note:
* network byte order assumed. this means 192.5.5.240/28 has
* 0b11110000 in its fourth octet.
+ * note:
+ * On Windows we store the error in the thread errno, not
+ * in the winsock error code. This is to avoid loosing the
+ * actual last winsock error. So use macro ERRNO to fetch the
+ * errno this funtion sets when returning (-1), not SOCKERRNO.
* author:
* Paul Vixie (ISC), June 1996
*/
@@ -186,11 +191,11 @@ inet_net_pton_ipv4(const char *src, unsigned char *dst, size_t size)
return (bits);
enoent:
- errno = ENOENT;
+ SET_ERRNO(ENOENT);
return (-1);
emsgsize:
- errno = EMSGSIZE;
+ SET_ERRNO(EMSGSIZE);
return (-1);
}
@@ -381,11 +386,11 @@ inet_net_pton_ipv6(const char *src, unsigned char *dst, size_t size)
return (bits);
enoent:
- errno = ENOENT;
+ SET_ERRNO(ENOENT);
return (-1);
emsgsize:
- errno = EMSGSIZE;
+ SET_ERRNO(EMSGSIZE);
return (-1);
}
@@ -399,6 +404,11 @@ inet_net_pton_ipv6(const char *src, unsigned char *dst, size_t size)
* number of bits, either imputed classfully or specified with /CIDR,
* or -1 if some failure occurred (check errno). ENOENT means it was
* not a valid network specification.
+ * note:
+ * On Windows we store the error in the thread errno, not
+ * in the winsock error code. This is to avoid loosing the
+ * actual last winsock error. So use macro ERRNO to fetch the
+ * errno this funtion sets when returning (-1), not SOCKERRNO.
* author:
* Paul Vixie (ISC), June 1996
*/
@@ -411,7 +421,7 @@ ares_inet_net_pton(int af, const char *src, void *dst, size_t size)
case AF_INET6:
return (inet_net_pton_ipv6(src, dst, size));
default:
- errno = EAFNOSUPPORT;
+ SET_ERRNO(EAFNOSUPPORT);
return (-1);
}
}
@@ -429,11 +439,11 @@ int ares_inet_pton(int af, const char *src, void *dst)
size = sizeof(struct in6_addr);
else
{
- errno = EAFNOSUPPORT;
+ SET_ERRNO(EAFNOSUPPORT);
return -1;
}
result = ares_inet_net_pton(af, src, dst, size);
- if (result == -1 && errno == ENOENT)
+ if (result == -1 && ERRNO == ENOENT)
return 0;
return (result > -1 ? 1 : -1);
}