Bruce Evans wrote:
On Fri, 22 May 2009, Sam Leffler wrote:

Alexey Dokuchaev wrote:
On Fri, May 22, 2009 at 06:10:40PM +0000, Rick Macklem wrote:
...
Log:
  Modified the printf message of r192590 to remove the
  possible DOS attack, as suggested by Sam.
  -    printf("out of clientids, possible DOS attack\n");
+    printf("out of clientids\n");


Previously, panic() message referred "nfs4", now it does not, making it
rather cryptic without grepping through the source code.
.
I requested the printf identify the call site; e.g.

printf("%s: out of clientids\n", __func__);

That is equally cryptic _with_ grepping through the source code, and
much uglier.  __func__ should only be used when the function name is
not a literal constant (mainly in macros).  The new nfs code only uses
__func__ in 2 places, now including this one.  The old nfs code only
uses it in a few more than 2 places.

IMO use of __func__ is far preferred to static strings as it follows the printf when it's moved to another function and allows fmt strings to be coalesced by the compiler/loader. I can't count the times I've had a printf w/ the wrong function name send me on a wild goose chase until I grep'd for the remainder of the string. IMO we should be replacing static function names w/ __func__ at every opportunity.

Regardless my advise was just that "advise". So long as I can identify the call site in case this error msg gets duplicated I don't care.

   Sam

_______________________________________________
svn-src-all@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"

Reply via email to