92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */
|
|
|
|
/* $Id$ */
|
|
|
|
/* Copyright (C) 1998-99 Martin Baulig
|
|
This file is part of LibGTop 1.0.
|
|
|
|
Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
|
|
|
|
LibGTop is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License,
|
|
or (at your option) any later version.
|
|
|
|
LibGTop 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 General Public License
|
|
for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with LibGTop; see the file COPYING. If not, write to the
|
|
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#include <glibtop.h>
|
|
#include <glibtop/error.h>
|
|
#include <glibtop/xmalloc.h>
|
|
#include <glibtop/proccwd.h>
|
|
|
|
static const unsigned long _glibtop_sysdeps_proc_cwd =
|
|
(1L << GLIBTOP_PROC_CWD_SIZE);
|
|
|
|
static const unsigned long _glibtop_sysdeps_proc_cwd_stat =
|
|
(1L << GLIBTOP_PROC_CWD_DEVICE) + (1L << GLIBTOP_PROC_CWD_INODE);
|
|
|
|
/* Init function. */
|
|
|
|
int
|
|
glibtop_init_proc_cwd_s (glibtop *server)
|
|
{
|
|
server->sysdeps.proc_cwd = _glibtop_sysdeps_proc_cwd |
|
|
_glibtop_sysdeps_proc_cwd_stat;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Provides detailed information about a process. */
|
|
|
|
char *
|
|
glibtop_get_proc_cwd_s (glibtop *server, glibtop_proc_cwd *buf, pid_t pid)
|
|
{
|
|
char fn [BUFSIZ], buffer [BUFSIZ], *retval = NULL;
|
|
struct stat statb;
|
|
int len;
|
|
|
|
glibtop_init_s (&server, GLIBTOP_SYSDEPS_PROC_CWD, 0);
|
|
|
|
memset (buf, 0, sizeof (glibtop_proc_cwd));
|
|
|
|
sprintf (fn, "/proc/%d/cwd", pid);
|
|
|
|
if (stat (fn, &statb)) {
|
|
/* If we can't even stat () than we can't readlink (). */
|
|
if (errno != EACCES) {
|
|
/* Don't make too much unnecessary noise here. */
|
|
glibtop_warn_io_r (server, "stat (%s)", fn);
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
buf->device = statb.st_dev;
|
|
buf->inode = statb.st_ino;
|
|
buf->flags = _glibtop_sysdeps_proc_cwd_stat;
|
|
|
|
len = readlink (fn, buffer, BUFSIZ-1);
|
|
|
|
if (len < 0) {
|
|
glibtop_warn_io_r (server, "readlink (%s)", fn);
|
|
return NULL;
|
|
}
|
|
|
|
buffer [len] = '\0';
|
|
|
|
retval = glibtop_strdup_r (server, buffer);
|
|
|
|
buf->size = len+1;
|
|
buf->flags |= _glibtop_sysdeps_proc_cwd;
|
|
|
|
return retval;
|
|
}
|