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From: duplain@rtf.bt.co.uk (Andy Duplain)
Newsgroups: comp.unix.bsd
Subject: Patch to allow ps(1) to identify console-controlled processes
Message-ID: <1992Dec21.154652.28356@rtf.bt.co.uk>
Date: 21 Dec 92 15:46:52 GMT
Organization: BT Customer Systems, Brighton, UK
Lines: 61
Hi, here is a hack to allow ps(1) to see processes that have the
console as there controlling tty. I don't understand why there
is both a console and a PC console device, but basically all
processes that are controlled from the console have the major device
number of 12, while /dev/console has a major device number of 0. An
alternative solution _could_ be to add a filesystem node for the
PC console device and then run dev_mkdb(8) again (having changed the
definition of _PATH_CONSOLE from /dev/console to /dev/whatever).
I don't have X running so these things may have been patched properly
by someone else...
Apply these patches at your own risk -- THEY CERTAINLY ARE A HACK!
*** ps.c.ORIG Mon Dec 21 15:23:58 1992
--- ps.c Mon Dec 21 15:33:45 1992
***************
*** 195,203 ****
struct stat stbuf;
char pathbuf[MAXPATHLEN];
! if (strcmp(optarg, "co") == 0)
! ttypath = _PATH_CONSOLE;
! else if (*optarg != '/')
(void) sprintf(ttypath = pathbuf, "%s%s",
_PATH_TTY, optarg);
else
--- 195,204 ----
struct stat stbuf;
char pathbuf[MAXPATHLEN];
! if (strcmp(optarg, "co") == 0) {
! ttydev = 0x0c00; /* HACK!!! */
! break;
! } else if (*optarg != '/')
(void) sprintf(ttypath = pathbuf, "%s%s",
_PATH_TTY, optarg);
else
*** devname.c.ORIG Mon Dec 21 15:09:00 1992
--- devname.c Mon Dec 21 15:27:04 1992
***************
*** 54,59 ****
--- 54,65 ----
static int failure;
DBT data, key;
+ /* hack to allow processes with the PC console device as there
+ controlling tty to be seen -- duplain@btcs.bt.co.uk */
+
+ if (major(dev) == 12)
+ return ("co");
+
if (!db && !failure &&
!(db = hash_open(_PATH_DEVDB, O_RDONLY, 0, NULL))) {
(void)fprintf(stderr,
--
Andy Duplain, BT Customer Systems, Brighton, UK. duplain@rtf.bt.co.uk
#define DISCLAIMER My views and opinions are my own, and not my company's