wget: implement -T SEC; rework progress meter to not use signals (it was unsafe)

function                                             old     new   delta
retrieve_file_data                                   364     450     +86
bb_progress_update                                   615     682     +67
packed_usage                                       27406   27422     +16
wget_main                                           2440    2453     +13
static.wget_longopts                                 145     155     +10
progress_meter                                       199     159     -40
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/1 up/down: 192/-40)           Total: 152 bytes

Signed-off-by: Bradley M. Kuhn <bkuhn@ebb.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/networking/Config.src b/networking/Config.src
index 8604c53e9..1d9a33f2b 100644
--- a/networking/Config.src
+++ b/networking/Config.src
@@ -1012,6 +1012,18 @@ config FEATURE_WGET_LONG_OPTIONS
         help
           Support long options for the wget applet.
 
+config FEATURE_WGET_TIMEOUT
+        bool "Enable timeout options"
+        default n
+        depends on WGET
+        help
+          Supports network read timeout for wget, so that wget will give
+          up and timeout when reading network data, through the -T command
+          line option.  Currently only network data read timeout is
+          supported (i.e., timeout is not applied to the DNS nor TCP
+          connection initialization).  When FEATURE_WGET_LONG_OPTIONS is
+          also enabled, the --timeout option will work in addition to -T.
+
 config ZCIP
         bool "zcip"
         default y