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/* Copyright (C) 2007 Benoît Dejean
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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <config.h>
#include <glibtop/procwd.h>
#include <glibtop/error.h>
#include <glibtop_private.h>
#include <unistd.h>
#include <dirent.h>
#include <sys/types.h>
void
_glibtop_init_proc_wd_s(glibtop *server)
{
server->sysdeps.proc_wd =
(1 << GLIBTOP_PROC_WD_EXE) +
(1 << GLIBTOP_PROC_WD_ROOT) +
(1 << GLIBTOP_PROC_WD_NUMBER);
}
static gboolean is_in(GPtrArray *array, const char *str)
{
guint i;
for (i = 0; i != array->len; ++i) {
if (strcmp(g_ptr_array_index(array, i), str) == 0)
return TRUE;
}
return FALSE;
}
char**
glibtop_get_proc_wd_s(glibtop *server, glibtop_proc_wd *buf, pid_t pid)
{
GPtrArray *dirs;
char path[80];
char dir[256];
DIR *task;
memset(buf, 0, sizeof(glibtop_proc_wd));
g_snprintf(path, sizeof path, "/proc/%u/root", pid);
if (safe_readlink(path, buf->root, sizeof buf->root))
buf->flags |= (1 << GLIBTOP_PROC_WD_ROOT);
g_snprintf(path, sizeof path, "/proc/%u/exe", pid);
if (safe_readlink(path, buf->exe, sizeof buf->exe))
buf->flags |= (1 << GLIBTOP_PROC_WD_EXE);
dirs = g_ptr_array_sized_new(2);
g_snprintf(path, sizeof path, "/proc/%u/cwd", pid);
if (safe_readlink(path, dir, sizeof dir))
g_ptr_array_add(dirs, g_strdup(dir));
g_snprintf(path, sizeof path, "/proc/%u/task", pid);
if ((task = opendir(path)) != NULL) {
struct dirent *sub;
while ((sub = readdir(task)) != NULL) {
/* task dirs have numeric name */
if (!isdigit(sub->d_name[0]))
continue;
g_snprintf(path, sizeof path, "/proc/%u/task/%s/cwd", pid, sub->d_name);
if (safe_readlink(path, dir, sizeof dir) && !is_in(dirs, dir))
g_ptr_array_add(dirs, g_strdup(dir));
}
closedir(task);
}
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);
}
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