.It Bq Er ETXTBSY
The new process file is a pure procedure (shared text)
file that is currently open for writing or reading by some process.
+.\" ==========
+.It Bq Er EBADARCH
+The new process file has no architectures appropriate for the current system.
.El
+.Pp
+Additionally, they may fail for any of the reasons listed in
+.Xr fork 2 or
+.Xr exec 3 .
.Sh CAVEAT
If a program is
.Em setuid