| .TH ERROR 9P | |
| .SH NAME | |
| error \- return an error | |
| .SH SYNOPSIS | |
| .ta \w'\fLRerror 'u | |
| .IR size [4] | |
| .B Rerror | |
| .IR tag [2] | |
| .IR ename [ s ] | |
| .SH DESCRIPTION | |
| The | |
| .B Rerror | |
| message | |
| (there is no | |
| .BR Terror ) | |
| is used to return an error string | |
| describing the | |
| failure of a transaction. | |
| It replaces the corresponding reply message | |
| that would accompany a successful call; its tag is that | |
| of the failing request. | |
| .PP | |
| By convention, clients may truncate error messages after | |
| .B ERRMAX-1 | |
| bytes; | |
| .B ERRMAX | |
| is defined in | |
| .BR <libc.h> . |