tftpd: chroot to DIR, not merely chdir. Closes 4874

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

diff --git a/networking/tftp.c b/networking/tftp.c
index 043b879af45cb1925235777699255db3ec8bb9af..ce48a1edd5f5089f5a68ea3467c9b5d8f59465c9 100644 (file)
--- a/networking/tftp.c
+++ b/networking/tftp.c
@@ -789,8 +789,9 @@ int tftpd_main(int argc UNUSED_PARAM, char **argv)
                openlog(applet_name, LOG_PID, LOG_DAEMON);
                logmode = LOGMODE_SYSLOG;
        }
-       if (argv[0])
-               xchdir(argv[0]);
+       if (argv[0]) {
+               xchroot(argv[0]);
+       }
 
        result = recv_from_to(STDIN_FILENO, block_buf, sizeof(block_buf),
                        0 /* flags */,