terror.9p - plan9port - [fork] Plan 9 from user space
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       terror.9p (514B)
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            1 .TH ERROR 9P 
            2 .SH NAME
            3 error \- return an error
            4 .SH SYNOPSIS
            5 .ta \w'\fLRerror 'u
            6 .IR size [4]
            7 .B Rerror
            8 .IR tag [2]
            9 .IR ename [ s ]
           10 .SH DESCRIPTION
           11 The
           12 .B Rerror
           13 message
           14 (there is no
           15 .BR Terror )
           16 is used to return an error string
           17 describing the
           18 failure of a transaction.
           19 It replaces the corresponding reply message
           20 that would accompany a successful call; its tag is that
           21 of the failing request.
           22 .PP
           23 By convention, clients may truncate error messages after
           24 .B ERRMAX-1
           25 bytes;
           26 .B ERRMAX
           27 is defined in
           28 .BR <libc.h> .