Add table of exit values, from errcode.h.

rsync.yo

@@ -786,6 +786,24 @@ If you are having trouble debugging include and exclude patterns, then
 try specifying the -vv option.  At this level of verbosity rsync will
 show why each individual file is included or excluded.
 
+manpagesection(EXIT VALUES)
+
+startdit()
+dit(bf(RERR_SYNTAX     1))       syntax or usage error 
+dit(bf(RERR_PROTOCOL   2))       protocol incompatibility 
+dit(bf(RERR_FILESELECT 3))       errors selecting input/output files, dirs 
+dit(bf(RERR_UNSUPPORTED 4))       requested action not supported 
+dit(bf(RERR_SOCKETIO   10))      error in socket IO 
+dit(bf(RERR_FILEIO     11))      error in file IO 
+dit(bf(RERR_STREAMIO   12))      error in rsync protocol data stream 
+dit(bf(RERR_MESSAGEIO  13))      errors with program diagnostics 
+dit(bf(RERR_IPC        14))      error in IPC code 
+dit(bf(RERR_SIGNAL     20))      status returned when sent SIGUSR1, SIGINT 
+dit(bf(RERR_WAITCHILD  21))      some error returned by waitpid() 
+dit(bf(RERR_MALLOC     22))      error allocating core memory buffers 
+dit(bf(RERR_TIMEOUT    30))      timeout in data send/receive 
+enddit()
+
 manpagesection(ENVIRONMENT VARIABLES)
 
 startdit()