exterror.9: describe formatting of optional arguments

Reviewed by:	emaste, mckusick
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D54380

This commit is contained in:

Konstantin Belousov

2025-12-27 18:21:37 +02:00

parent 2904edaf2f

commit 14bd57d0a7

1 changed files with 10 additions and 0 deletions

									
										share/man/man9/exterror.9
									
		+10
		
												View File
												
					@@ -90,6 +90,16 @@ The

					.Fn EXTERROR

					.Fn EXTERROR

					macro can take two optional 64-bit integer arguments,

					macro can take two optional 64-bit integer arguments,

					whose meaning is specific to the subsystem.

					whose meaning is specific to the subsystem.

					The format string may include up to two printf-like format

					specifiers to insert the optional argument values in the

					user output, which is done in userspace.

					.Pp

					The format specifier must be for an integer type, and include the

					.Dq j

					format modifier to accept only the types

					.Vt intmax_t

					or

					.Vt uintmax_t .

					.El

					.El

					.Pp

					.Pp

					The strings passed as the second argument are only retained

					The strings passed as the second argument are only retained