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| author | Michael Brown | 2010-12-01 01:47:09 +0100 |
|---|---|---|
| committer | Michael Brown | 2010-12-01 01:47:09 +0100 |
| commit | 34dab1007c089ecf4c9778367372d9159b79b7af (patch) | |
| tree | 263ee66d766042e5274892eb79596dea1d3cd8cc | |
| parent | [hermon] Fix inconsistent information in HERMON_SET_PORT_GENERAL_PARAM (diff) | |
| download | ipxe-34dab1007c089ecf4c9778367372d9159b79b7af.tar.gz ipxe-34dab1007c089ecf4c9778367372d9159b79b7af.tar.xz ipxe-34dab1007c089ecf4c9778367372d9159b79b7af.zip | |
[dns] Disambiguate "no nameserver" and "no DNS record" errors
Signed-off-by: Michael Brown <mcb30@ipxe.org>
| -rw-r--r-- | src/net/udp/dns.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/net/udp/dns.c b/src/net/udp/dns.c index ddbccc32..be7a98e7 100644 --- a/src/net/udp/dns.c +++ b/src/net/udp/dns.c @@ -46,6 +46,14 @@ FILE_LICENCE ( GPL2_OR_LATER ); FEATURE ( FEATURE_PROTOCOL, "DNS", DHCP_EB_FEATURE_DNS, 1 ); +/* Disambiguate the various error causes */ +#define ENXIO_NO_RECORD __einfo_error ( EINFO_ENXIO_NO_RECORD ) +#define EINFO_ENXIO_NO_RECORD \ + __einfo_uniqify ( EINFO_ENXIO, 0x01, "DNS name does not exist" ) +#define ENXIO_NO_NAMESERVER __einfo_error ( EINFO_ENXIO_NO_NAMESERVER ) +#define EINFO_ENXIO_NO_NAMESERVER \ + __einfo_uniqify ( EINFO_ENXIO, 0x02, "No DNS servers available" ) + /** The DNS server */ static struct sockaddr_tcpip nameserver = { .st_port = htons ( DNS_PORT ), @@ -438,7 +446,7 @@ static int dns_xfer_deliver ( struct dns_request *dns, goto done; } else { DBGC ( dns, "DNS %p found no CNAME record\n", dns ); - dns_done ( dns, -ENXIO ); + dns_done ( dns, -ENXIO_NO_RECORD ); rc = 0; goto done; } @@ -507,7 +515,7 @@ static int dns_resolv ( struct interface *resolv, if ( ! nameserver.st_family ) { DBG ( "DNS not attempting to resolve \"%s\": " "no DNS servers\n", name ); - rc = -ENXIO; + rc = -ENXIO_NO_NAMESERVER; goto err_no_nameserver; } |