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/* $Id$ */
/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
This file is part of the Gnome Top Library.
Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
The Gnome Top Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The Gnome Top Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <glibtop.h>
#include <glibtop/procuid.h>
static const unsigned long _glibtop_sysdeps_proc_uid =
(1 << GLIBTOP_PROC_UID_UID) + (1 << GLIBTOP_PROC_UID_EUID) +
(1 << GLIBTOP_PROC_UID_GID) + (1 << GLIBTOP_PROC_UID_EGID) +
(1 << GLIBTOP_PROC_UID_PID) + (1 << GLIBTOP_PROC_UID_PPID) +
(1 << GLIBTOP_PROC_UID_PGRP) + (1 << GLIBTOP_PROC_UID_SESSION) +
(1 << GLIBTOP_PROC_UID_TTY) + (1 << GLIBTOP_PROC_UID_TPGID) +
(1 << GLIBTOP_PROC_UID_PRIORITY) + (1 << GLIBTOP_PROC_UID_NICE);
#define LINUX_VERSION(x,y,z) (0x10000*(x) + 0x100*(y) + z)
/* Provides detailed information about a process. */
void
glibtop_get_proc_uid__s (glibtop *server, glibtop_proc_uid *buf, pid_t pid)
{
char input [BUFSIZ], *tmp;
int nread;
FILE *f;
glibtop_init__r (&server, 0, 0);
memset (buf, 0, sizeof (glibtop_proc_uid));
if (pid == 0) {
/* Client is only interested in the flags. */
buf->flags = _glibtop_sysdeps_proc_uid;
return;
}
sprintf (input, "/proc/%d/status", pid);
f = fopen (input, "r");
if (!f) return;
nread = fread (input, 1, BUFSIZ, f);
if (nread < 0) {
fclose (f);
return;
}
input [nread] = 0;
/* Search substring 'Pid:' */
tmp = strstr (input, "Pid:");
if (tmp == NULL) return;
sscanf (tmp, "\nPid: %u\nPPid: %u\nUid: %u %u %*u %*u\n"
"Gid: %u %u %*u %*u\n", &buf->pid, &buf->ppid,
&buf->uid, &buf->euid, &buf->gid, &buf->egid);
fclose (f);
sprintf (input, "/proc/%d/stat", pid);
f = fopen (input, "r");
if (!f) return;
nread = fread (input, 1, BUFSIZ, f);
if (nread < 0) {
fclose (f);
return;
}
input [nread] = 0;
/* This is from guile-utils/gtop/proc/readproc.c */
/* split into "PID (cmd" and "<rest>" */
tmp = strrchr (input, ')');
*tmp = '\0'; /* replace trailing ')' with NUL */
/* parse these two strings separately, skipping the leading "(". */
sscanf(tmp + 2, /* skip space after ')' too */
"%*c %*d %d %d %d %d %*u %*u %*u %*u %*u "
"%*d %*d %*d %*d %d %d",
&buf->pgrp, &buf->session, &buf->tty, &buf->tpgid,
&buf->priority, &buf->nice);
if (buf->tty == 0)
/* the old notty val, update elsewhere bef. moving to 0 */
buf->tty = -1;
if (server->os_version_code < LINUX_VERSION(1,3,39)) {
/* map old meanings to new */
buf->priority = 2*15 - buf->priority;
buf->nice = 15 - buf->nice;
}
if (server->os_version_code < LINUX_VERSION(1,1,30) && buf->tty != -1)
/* when tty wasn't full devno */
buf->tty = 4*0x100 + buf->tty;
fclose (f);
buf->flags = _glibtop_sysdeps_proc_uid;
}
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