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When doing a nonblocked connect, we need to select for 'write', not 'read'.
Also, when a tcp socket has been connected, we should use clnttcp_create
to make a tcp client, not clntudp_bufcreate !!
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Showmount itself tries to use a short timeout but
the RPC clnttcp_create and clntudp_create calls will call portmap
internally to get the port to use if it is set to 0 in the passed
address structure. The above calls then use the internal timeouts,
basically 60 seconds, which slows things down. Also the for tcp a
blocking connect is used which can take quite a while to timeout as
well.
showmount tries tcp then udp so a fail can go through several lengthy
waits before failing.
I've grabbed some of the autofs code and put together a patch to allow
specification of the timeouts for the portmap getport and to implement a
non-blocking connect.
Signed-off-by: Neil Brown <neilb@suse.de>
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* tools/rpcgen/rpc_cout.c (print_header): Remove unused vars.
* tools/rpcgen/rpc_parse.c (def_union): Likewise.
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* utils/showmount/showmount.c (main): Don't assume that strings
starting with digits are IP addresses.
* utils/nfsd/nfsd.c (main): Close all fds and reopen 0,1,2 on
/dev/null before nfssvc(). Use syslog to report nfssvc errors.
* support/misc/tcpwrapper.c, utils/mountd/mountd.man,
utils/rquotad/rquotad.man, utils/statd/statd.man: Fix comments and
man pages: We check host names *and* addresses with tcpwrappers.
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