tftpd: new applet (mostly using existing code for tftp)

function                                             old     new   delta
tftp_protocol                                          -    1173   +1173
tftpd_main                                             -     500    +500
tftp_option_get                                        -     102    +102
packed_usage                                       23650   23662     +12
applet_names                                        1809    1815      +6
applet_main                                         1100    1104      +4
applet_nameofs                                       550     552      +2
tftp_main                                            302     301      -1
get_nport                                             32       -     -32
tftp                                                1172       -   -1172
------------------------------------------------------------------------------
(add/remove: 3/2 grow/shrink: 4/1 up/down: 1799/-1205)        Total: 594 bytes
   text    data     bss     dec     hex filename
 796479     662    7420  804561   c46d1 busybox_old
 797153     662    7420  805235   c4973 busybox_unstripped

1 files changed, 7 insertions, 1 deletions

diff --git a/include/usage.h b/include/usage.h
index 507a52dab..8f563f55e 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -3961,7 +3961,7 @@
 #define tftp_trivial_usage \
        "[OPTION]... HOST [PORT]"
 #define tftp_full_usage \
-       "Transfer a file from/to tftp server using \"octet\" mode\n" \
+       "Transfer a file from/to tftp server\n" \
      "\nOptions:" \
      "\n        -l FILE Local FILE" \
      "\n        -r FILE Remote FILE" \
@@ -3974,6 +3974,12 @@
         USE_FEATURE_TFTP_BLOCKSIZE( \
      "\n        -b SIZE Transfer blocks of SIZE octets" \
         )
+
+#define tftpd_trivial_usage \
+       "[DIR]"
+#define tftpd_full_usage \
+       "Transfer a file on request from a tftp client" \
+
 #define time_trivial_usage \
        "[OPTION]... COMMAND [ARGS...]"
 #define time_full_usage \