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/* Copyright (C) 2007 Joe Marcus Clarke
This file is part of LibGTop 2.
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 <config.h>
#include <glibtop/procwd.h>
#include <glibtop/error.h>
#include <glibtop_private.h>
#include <sys/types.h>
#include <sys/param.h>
#include <string.h>
static const unsigned long _glibtop_sysdeps_proc_wd =
(1 << GLIBTOP_PROC_WD_EXE) |
(1 << GLIBTOP_PROC_WD_ROOT) |
(1 << GLIBTOP_PROC_WD_NUMBER);
void
_glibtop_init_proc_wd_s(glibtop *server)
{
server->sysdeps.proc_wd = _glibtop_sysdeps_proc_wd;
}
static GPtrArray *
parse_output(const char *output, glibtop_proc_wd *buf)
{
GPtrArray *dirs;
char **lines;
gboolean nextwd = FALSE;
gboolean nextrtd = FALSE;
gboolean havertd = FALSE;
guint i;
guint len;
dirs = g_ptr_array_sized_new(1);
lines = g_strsplit(output, "\n", 0);
len = g_strv_length(lines);
for (i = 0; i < len && lines[i]; i++) {
if (strlen(lines[i]) < 2)
continue;
if (!strcmp(lines[i], "fcwd")) {
nextwd = TRUE;
continue;
}
if (!strcmp(lines[i], "frtd")) {
nextrtd = TRUE;
continue;
}
if (!g_str_has_prefix(lines[i], "n"))
continue;
if (nextwd) {
g_ptr_array_add(dirs, g_strdup(lines[i] + 1));
nextwd = FALSE;
}
if (nextrtd && !havertd) {
g_strlcpy(buf->root, lines[i] + 1,
sizeof(buf->root));
buf->flags |= (1 << GLIBTOP_PROC_WD_ROOT);
nextrtd = FALSE;
havertd = TRUE;
}
}
g_strfreev(lines);
return dirs;
}
char**
glibtop_get_proc_wd_s(glibtop *server, glibtop_proc_wd *buf, pid_t pid)
{
char path[MAXPATHLEN];
char *output;
memset (buf, 0, sizeof (glibtop_proc_wd));
g_snprintf(path, sizeof(path), "/proc/%u/file", pid);
if (safe_readlink(path, buf->exe, sizeof(buf->exe)))
buf->flags |= (1 << GLIBTOP_PROC_WD_EXE);
output = execute_lsof(pid);
if (output != NULL) {
GPtrArray *dirs;
dirs = parse_output(output, buf);
g_free(output);
buf->number = dirs->len;
buf->flags |= (1 << GLIBTOP_PROC_WD_NUMBER);
g_ptr_array_add(dirs, NULL);
return (char **)g_ptr_array_free(dirs, FALSE);
}
return NULL;
}
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