Date: Tue, 4 Sep 2001 01:03:27 +0300 From: Giorgos Keramidas <charon@labs.gr> To: Stephen Montgomery-Smith <stephen@math.missouri.edu> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: killall longprocname Message-ID: <20010904010327.A4436@hades.hell.gr> In-Reply-To: <3B93EF80.37F0670A@math.missouri.edu>; from stephen@math.missouri.edu on Mon, Sep 03, 2001 at 04:00:48PM -0500 References: <3B93EF80.37F0670A@math.missouri.edu>
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From: Stephen Montgomery-Smith <stephen@math.missouri.edu>
Subject: killall longprocname
Date: Mon, Sep 03, 2001 at 04:00:48PM -0500
> If I create and run a program called abcdefghijklmnopqrstuvwxyz and then
> try to kill it using killall, the only command that seems to work is:
> killall abcdefghijklmnop
> that is, it looks like killall only looks at the first 16 characters. I
> don't see anything about this is the man page. Is this the appropriate
> behavior?
Actually, the source of killall.c uses MAXCOMLEN as the maximum number
of characters to compare. From the 5.0-CURRENT sources I read near
line 321 the following:
319 regfree(&rgx);
320 } else {
321 if (strncmp(thiscmd, cmd, MAXCOMLEN) != 0)
322 matched = 0;
323 }
And <sys/param.h> defines MAXCOMLEN as 19 in:
72 #include <sys/syslimits.h>
73
74 #define MAXCOMLEN 19 /* max command name remembered */
75 #define MAXINTERP 32 /* max interpreter file name length */
76 #define MAXLOGNAME 17 /* max login name length (incl. NUL) */
This is not documented in the manpage though. Perhaps, a send-pr(1)
with a correction is proper(?). If you, Stephen, have no time to file
a bug report with the fix for the manpage, I can do it tomorrow.
-giorgos
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