cvs commit: src/sys/kern vfs_mount.c

Pawel Jakub Dawidek pjd at
Wed Nov 9 10:56:31 GMT 2005

On Wed, Nov 09, 2005 at 11:46:01AM +0100, Pawel Jakub Dawidek wrote:
+> On Wed, Nov 09, 2005 at 02:26:38AM +0000, Craig Rodrigues wrote:
+> +> rodrigc     2005-11-09 02:26:38 UTC
+> +> 
+> +>   FreeBSD src repository
+> +> 
+> +>   Modified files:
+> +>     sys/kern             vfs_mount.c 
+> +>   Log:
+> +>   For nmount(), allow a text string error message to be propagated back
+> +>   to user-space if a parameter named "errmsg" is passed into the iovec.
+> +>   Used in conjunction with vfs_mount_error(), more useful error messages
+> +>   than errno can be passed back to userspace when mounting a filesystem
+> +>   fails.
+> BTW. This is the 2nd (that I know of) place where passing errors as
+> strings is implemented (the other one is GEOM). This would be cool at
+> some point to implement general API for this, as it's much more useful
+> than errno(2). Of course we need to consider things like localization,
+> etc. then. IIRC phk@ was talking about this at BSDCan.

I should really read the whole thread before answering:)

Pawel Jakub Dawidek             
pjd at                 
FreeBSD committer                         Am I Evil? Yes, I Am!
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