*
* Copyright (C) 2000 Edward Betts <edward@debian.org>.
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
/* BB_AUDIT SUSv3 compliant */
* a diagnostic message and an error return.
*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include "busybox.h"
+//usage:#define logname_trivial_usage
+//usage: ""
+//usage:#define logname_full_usage "\n\n"
+//usage: "Print the name of the current user"
+//usage:
+//usage:#define logname_example_usage
+//usage: "$ logname\n"
+//usage: "root\n"
-int logname_main(int argc, char ATTRIBUTE_UNUSED **argv)
+#include "libbb.h"
+
+/* This is a NOFORK applet. Be very careful! */
+
+int logname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int logname_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
{
- const char *p;
+ char buf[64];
- if (argc > 1) {
+ if (argv[1]) {
bb_show_usage();
}
- if ((p = getlogin()) != NULL) {
- puts(p);
- fflush_stdout_and_exit(EXIT_SUCCESS);
+ /* Using _r function - avoid pulling in static buffer from libc */
+ if (getlogin_r(buf, sizeof(buf)) == 0) {
+ puts(buf);
+ return fflush_all();
}
bb_perror_msg_and_die("getlogin");