Hello Mikel, On Wed, Mar 9, 2011 at 11:43 AM, Mikel Ward <mikel@xxxxxxxxxxxxx> wrote: > Hi > > http://www.kernel.org/doc/man-pages/online/pages/man3/lockf.3.html > says: > > EBADF fd is not an open file descriptor. > > However it can also happen if the file descriptor is open, but not for writing. > > The POSIX docs say this > http://pubs.opengroup.org/onlinepubs/009695399/functions/lockf.html > > and a simple test program confirms it is the case. Yes, thanks for the report! For man-pages-3.33, I applied the patch below. Cheers, Michael --- a/man3/lockf.3 +++ b/man3/lockf.3 @@ -19,7 +19,7 @@ .\" Added section stuff, aeb, 2002-04-22. .\" Corrected include file, drepper, 2003-06-15. .\" -.TH LOCKF 3 2010-09-20 "GNU" "Linux Programmer's Manual" +.TH LOCKF 3 2011-09-11 "GNU" "Linux Programmer's Manual" .SH NAME lockf \- apply, test or remove a POSIX lock on an open file .SH SYNOPSIS @@ -124,7 +124,15 @@ been memory-mapped by another process. .TP .B EBADF .I fd -is not an open file descriptor. +is not an open file descriptor; or +.I cmd +is +.B F_LOCK +or +.BR F_TLOCK +and +.I fd +is not a writable file descriptor. .TP .B EDEADLK The command was -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Author of "The Linux Programming Interface"; http://man7.org/tlpi/ -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
