tftpd: add -l "log to syslog" option. Needed for inetd mode

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

diff --git a/networking/tftp.c b/networking/tftp.c
index e50d9254b5b2ae6864c7c805dd6f7424be4013fe..9080c442f34f60359f458be986809b87990811e4 100644 (file)
--- a/networking/tftp.c
+++ b/networking/tftp.c
@@ -43,13 +43,14 @@
 //usage:       "\n"
 //usage:       "tftpd should be used as an inetd service.\n"
 //usage:       "tftpd's line for inetd.conf:\n"
-//usage:       "       69 dgram udp nowait root tftpd tftpd /files/to/serve\n"
+//usage:       "       69 dgram udp nowait root tftpd tftpd -l /files/to/serve\n"
 //usage:       "It also can be ran from udpsvd:\n"
 //usage:       "       udpsvd -vE 0.0.0.0 69 tftpd /files/to/serve\n"
 //usage:     "\nOptions:"
 //usage:     "\n       -r      Prohibit upload"
 //usage:     "\n       -c      Allow file creation via upload"
 //usage:     "\n       -u      Access files as USER"
+//usage:     "\n       -l      Log to syslog (inetd mode requires this)"
 
 #include "libbb.h"
 
@@ -92,6 +93,7 @@ enum {
        TFTPD_OPT_r = (1 << 8) * ENABLE_TFTPD,
        TFTPD_OPT_c = (1 << 9) * ENABLE_TFTPD,
        TFTPD_OPT_u = (1 << 10) * ENABLE_TFTPD,
+       TFTPD_OPT_l = (1 << 11) * ENABLE_TFTPD,
 };
 
 #if ENABLE_FEATURE_TFTP_GET && !ENABLE_FEATURE_TFTP_PUT
@@ -782,8 +784,12 @@ int tftpd_main(int argc UNUSED_PARAM, char **argv)
        peer_lsa->len = our_lsa->len;
 
        /* Shifting to not collide with TFTP_OPTs */
-       opt = option_mask32 = TFTPD_OPT | (getopt32(argv, "rcu:", &user_opt) << 8);
+       opt = option_mask32 = TFTPD_OPT | (getopt32(argv, "rcu:l", &user_opt) << 8);
        argv += optind;
+       if (opt & TFTPD_OPT_l) {
+               openlog(applet_name, LOG_PID, LOG_DAEMON);
+               logmode = LOGMODE_SYSLOG;
+       }
        if (argv[0])
                xchdir(argv[0]);