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/* Copyright (C) 2007 BenoƮt Dejean
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This file is part of LibGTop 2.
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LibGTop is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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LibGTop is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with LibGTop; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include <config.h>
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#include <glibtop/procwd.h>
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#include <glibtop/error.h>
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#include <glibtop_private.h>
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#include <unistd.h>
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#include <dirent.h>
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#include <sys/types.h>
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void
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_glibtop_init_proc_wd_s(glibtop *server)
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{
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server->sysdeps.proc_wd =
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(1 << GLIBTOP_PROC_WD_EXE) +
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(1 << GLIBTOP_PROC_WD_ROOT) +
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(1 << GLIBTOP_PROC_WD_NUMBER);
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}
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static gboolean is_in(GPtrArray *array, const char *str)
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{
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guint i;
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for (i = 0; i != array->len; ++i) {
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if (strcmp(g_ptr_array_index(array, i), str) == 0)
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return TRUE;
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}
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return FALSE;
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}
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char**
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glibtop_get_proc_wd_s(glibtop *server, glibtop_proc_wd *buf, pid_t pid)
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{
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GPtrArray *dirs;
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char path[80];
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char dir[256];
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DIR *task;
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memset(buf, 0, sizeof(glibtop_proc_wd));
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g_snprintf(path, sizeof path, "/proc/%u/root", pid);
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if (safe_readlink(path, buf->root, sizeof buf->root))
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buf->flags |= (1 << GLIBTOP_PROC_WD_ROOT);
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g_snprintf(path, sizeof path, "/proc/%u/exe", pid);
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if (safe_readlink(path, buf->exe, sizeof buf->exe))
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buf->flags |= (1 << GLIBTOP_PROC_WD_EXE);
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dirs = g_ptr_array_sized_new(2);
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g_snprintf(path, sizeof path, "/proc/%u/cwd", pid);
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if (safe_readlink(path, dir, sizeof dir))
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g_ptr_array_add(dirs, g_strdup(dir));
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g_snprintf(path, sizeof path, "/proc/%u/task", pid);
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if ((task = opendir(path)) != NULL) {
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struct dirent *sub;
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while ((sub = readdir(task)) != NULL) {
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/* task dirs have numeric name */
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if (!isdigit(sub->d_name[0]))
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continue;
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g_snprintf(path, sizeof path, "/proc/%u/task/%s/cwd", pid, sub->d_name);
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if (safe_readlink(path, dir, sizeof dir) && !is_in(dirs, dir))
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g_ptr_array_add(dirs, g_strdup(dir));
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}
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closedir(task);
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}
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buf->number = dirs->len;
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buf->flags |= (1 << GLIBTOP_PROC_WD_NUMBER);
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g_ptr_array_add(dirs, NULL);
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return (char**) g_ptr_array_free(dirs, FALSE);
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}
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