From: "Steve Simon" <steve@quintile.net>
To: 9fans@9fans.net
Subject: [9fans] kernel, errfmt
Date: Fri, 25 Jul 2008 12:15:39 +0100 [thread overview]
Message-ID: <c6a62e7956a7feccb4e42c877569d5ae@quintile.net> (raw)
Hi,
I have become confused trying to understand
the kernel's linkage.
the kernel uses print() in many places, e.g.
/sys/src/9/port/xalloc.c:80
/sys/src/9/port/devcons.c:211 This calls vseprint().
/sys/src/libc/fmt/fmt.c:47 The fmt library installs %r
(errfmt) by default.
/sys/src/libc/fmt/errfmt.c:10 references rerrstr().
/sys/src/libc/9sys/rerrstr.c:10 references errstr().
Errstr() is a system call and does not exist in the
kernel (where it becomes syserrstr()).
How can this work? ...or does the kernel itself
perform system calls?
-Steve
next reply other threads:[~2008-07-25 11:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-25 11:15 Steve Simon [this message]
2008-07-25 11:47 erik quanstrom
2008-07-25 12:11 ` Charles Forsyth
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