extend fractional duration support to "top -d N.N" and "timeout"

function                                             old     new   delta
parse_duration_str                                     -     168    +168
sleep_for_duration                                     -     157    +157
top_main                                             885     928     +43
timeout_main                                         269     312     +43
handle_input                                         571     614     +43
duration_suffixes                                      -      40     +40
sfx                                                   40       -     -40
sleep_main                                           364      79    -285
------------------------------------------------------------------------------
(add/remove: 4/1 grow/shrink: 3/1 up/down: 494/-325)          Total: 169 bytes

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

1 files changed, 4 insertions, 2 deletions

diff --git a/coreutils/timeout.c b/coreutils/timeout.c
index 4a6117f59..663303c2d 100644
--- a/coreutils/timeout.c
+++ b/coreutils/timeout.c
@@ -52,7 +52,8 @@ int timeout_main(int argc UNUSED_PARAM, char **argv)
         int signo;
         int status;
         int parent = 0;
-        int timeout = 10;
+        unsigned timeout;
+        const char *timeout_s = "10";
         pid_t pid;
 #if !BB_MMU
         char *sv1, *sv2;
@@ -63,11 +64,12 @@ int timeout_main(int argc UNUSED_PARAM, char **argv)
 
         /* -t SECONDS; -p PARENT_PID */
         /* '+': stop at first non-option */
-        getopt32(argv, "+s:t:+" USE_FOR_NOMMU("p:+"), &opt_s, &timeout, &parent);
+        getopt32(argv, "+s:t:" USE_FOR_NOMMU("p:+"), &opt_s, &timeout_s, &parent);
         /*argv += optind; - no, wait for bb_daemonize_or_rexec! */
         signo = get_signum(opt_s);
         if (signo < 0)
                 bb_error_msg_and_die("unknown signal '%s'", opt_s);
+        timeout = parse_duration_str((char*)timeout_s);
 
         /* We want to create a grandchild which will watch
          * and kill the grandparent. Other methods: