#include <config.h>

#include <glibtop.h>

#include <glibtop/error.h>

#include "glibtop_private.h"

#include <sys/types.h>

#include <unistd.h>

#include <string.h>

#include <glib.h>

#include <errno.h>

char *

execute_lsof(pid_t pid) {

	char *output = NULL;

	char *lsof;

	char *command;

	int   exit_status;

	lsof = g_find_program_in_path("lsof");

	if (lsof == NULL)

		return NULL;

	command = g_strdup_printf("%s -n -P -Fftn -p %d", lsof, pid);

	g_free(lsof);

	if (g_spawn_command_line_sync (command, &output, NULL, &exit_status, NULL)) {

		if (exit_status != 0) {

			g_warning("Could not execute \"%s\" (%i)", command,

				   exit_status);

			output = NULL;

		}

	}

	g_free(command);

	return output;

}

/* Ported from linux/glibtop_private.c */

gboolean

safe_readlink(const char *path, char *buf, int bufsiz)

{

	int ret;

	ret = readlink(path, buf, bufsiz - 1);

	if (ret == -1) {

		g_warning("Could not read link %s : %s", path, strerror(errno));

		return FALSE;

	}

	buf[ret] = '\0';

	return TRUE;

}