man page update

CHANGES

@@ -1,4 +1,5 @@
 0.21:
+  errno cleanup and man page updates (Rolf Eike Beer)
 
 0.20:
   add errmsg API

dns/dns_ip6.3

@@ -1,6 +1,6 @@
 .TH dns_ip6 3
 .SH NAME
-dns_ip6 \- look up IPv4 addresses
+dns_ip6 \- look up IPv6 addresses
 .SH SYNTAX
 .B #include <dns.h>
 

dns/dns_name6_domain.3

@@ -18,6 +18,6 @@ way.
 
 q is zero terminated.
 
-q must have space for DNS_NAME4_DOMAIN bytes.
+q must have space for DNS_NAME6_DOMAIN bytes.
 .SH "SEE ALSO"
 dns_name6(3), dns_name4_domain(3)

dns/dns_txt.c

@@ -1,3 +1,4 @@
+#include <errno.h>
 #include "stralloc.h"
 #include "uint16.h"
 #include "byte.h"
@@ -26,7 +27,7 @@ int dns_txt_packet(stralloc *out,const char *buf,unsigned int len)
     uint16_unpack_big(header + 8,&datalen);
     if (byte_equal(header,2,DNS_T_TXT))
       if (byte_equal(header + 2,2,DNS_C_IN)) {
-	if (pos + datalen > len) return -1;
+	if (pos + datalen > len) { errno = EINVAL; return -1; }
 	txtlen = 0;
 	for (i = 0;i < datalen;++i) {
 	  ch = buf[pos + i];

dns/dns_txt_packet.3

@@ -7,9 +7,9 @@ dns_txt_packet \- extract TXT records from DNS answer packet
 int \fBdns_txt_packet\fP(stralloc* \fIout\fR,const char* \fIbuf\fR,
                   unsigned int \fIlen\fR);
 .SH DESCRIPTION
-dns_txt_packet is a low-level component of dns_mx, designed to support
+dns_txt_packet is a low-level component of dns_txt, designed to support
 asynchronous DNS lookups. It reads a DNS packet of length \fIlen\fR from \fIbuf\fR,
 extracts the TXT records from the answer section of the packet, puts the
-result into \fIout\fR, and returns 0 or -1 the same way as dns_mx.
+result into \fIout\fR, and returns 0 or -1 the same way as dns_txt.
 .SH "SEE ALSO"
-dns_mx(3)
+dns_txt(3)

socket/fmt_ip4.3

@@ -24,4 +24,4 @@ contain every possible fmt_ip4 output plus \\0.
   char ip[4];
   buf[fmt_ip4(buf,ip)]=0;
 .SH "SEE ALSO"
-scan_ip4(3), fmt_ip6(3)
+scan_ip4(3), fmt_ip6(3), inet_ntop(3)

socket/fmt_ip6.3

@@ -29,4 +29,4 @@ contain every possible fmt_ip6 output plus \\0.
   char ip[16];
   buf[fmt_ip6(buf,ip)]=0;
 .SH "SEE ALSO"
-fmt_ip6c(3), fmt_ip6if(3), scan_ip6(3), fmt_ip4(3)
+fmt_ip6c(3), fmt_ip6if(3), scan_ip6(3), fmt_ip4(3), inet_ntop(3)

socket/scan_ip4.3

@@ -23,4 +23,4 @@ Unlike many other IP parsing routines, scan_ip4 does not recognize octal
     parse_error();
 
 .SH "SEE ALSO"
-fmt_ip4(3), scan_ip6(3)
+fmt_ip4(3), scan_ip6(3), inet_pton(3)

socket/scan_ip6.3

@@ -32,4 +32,4 @@ in the IPv4 part.
     parse_error();
 
 .SH "SEE ALSO"
-fmt_ip6(3), scan_ip4(3)
+fmt_ip6(3), scan_ip4(3), inet_pton(3)