> > After some digging, it seems /usr/include/sys/socket.h is relevant:
> >
> > /*
> > * Address families.
> > */
> > #define AF_UNSPEC 0 /* unspecified */
> > #define AF_UNIX 1 /* local to host (pipes, portals)
> > */
> > #define AF_INET 2 /* internetwork: UDP, TCP, etc. */
> > #define AF_IMPLINK 3 /* arpanet imp addresses */
> > #define AF_PUP 4 /* pup protocols: e.g. BSP */
> > #define AF_CHAOS 5 /* mit CHAOS protocols */
> > #define AF_NS 6 /* XEROX NS protocols */
> > #define AF_ISO 7 /* ISO protocols */
> > #define AF_OSI AF_ISO
> > #define AF_ECMA 8 /* european computer manufacturers
> > */
> > #define AF_DATAKIT 9 /* datakit protocols */
> > #define AF_CCITT 10 /* CCITT protocols, X.25 etc */
> > #define AF_SNA 11 /* IBM SNA */
> > #define AF_DECnet 12 /* DECnet */
> > #define AF_DLI 13 /* Direct data link interface */
> > #define AF_LAT 14 /* LAT */
> > #define AF_HYLINK 15 /* NSC Hyperchannel */
> > #define AF_APPLETALK 16 /* Apple Talk */
> > #define AF_ROUTE 17 /* Internal Routing Protocol */
> > #define AF_LINK 18 /* Link layer interface */
> > #define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no
> > AF)
> > */
> >
> > #define AF_MAX 20
> >
> > /*
> > * Structure used by kernel to store most addresses.
> > */
> > struct sockaddr {
> > u_short sa_family; /* address family */
> > char sa_data[14]; /* up to 14 bytes of direct
> > address */
> > };
> >
> > Any suggestions on a curl convention to follow with respect to
> > handling this variance to what other systems define?
>
> After more digging, I see CURL_SA_FAMILY_T...
This comes down to the fact that this is a bug in curl 7.66.0
through 7.76.0. "sa_family_t" should not occur in lib/connect.c,
but rather, CURL_SA_FAMILY_T should appear there:
Build succeeds with this patch applied:
$ cat curl-7.76.0-i686-pc-sco3.2v5.0.7-2.patch
--- curl-7.76.0/lib/connect.c.orig 2021-03-30 16:58:56.000000000 -0500
+++ curl-7.76.0/lib/connect.c 2021-04-19 13:48:21.000000000 -0500
@@ -660,7 +660,7 @@
#endif
#if defined(HAVE_SYS_UN_H) && defined(AF_UNIX)
case AF_UNIX:
- if(salen > (curl_socklen_t)sizeof(sa_family_t)) {
+ if(salen > (curl_socklen_t)sizeof(CURL_SA_FAMILY_T)) {
su = (struct sockaddr_un*)sa;
msnprintf(addr, MAX_IPADR_LEN, "%s", su->sun_path);
}
$ src/curl --version
curl 7.76.0 (i686-pc-sco3.2v5.0.7) libcurl/7.76.0 OpenSSL/1.0.2u zlib/1.2.11
libssh2/1.8.0
Release-Date: 2021-03-31
Protocols: dict file ftp ftps gopher gophers http https imap imaps mqtt pop3
pop3s rtsp scp sftp smtp smtps telnet tftp
Features: alt-svc HTTPS-proxy libz NTLM NTLM_WB SSL TLS-SRP UnixSockets
Kevin R. Bulgrien
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