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dhcp: get rid of static data signal_pipe

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function                                             old     new   delta
udhcp_sp_setup                                        65     110     +45
udhcp_sp_fd_set                                       60      59      -1
udhcpd_main                                         1442    1437      -5
udhcpc_main                                         2684    2679      -5
signal_pipe                                            8       -      -8
packed_usage                                       33292   33284      -8
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/4 up/down: 45/-27)             Total: 18 bytes
   text	   data	    bss	    dec	    hex	filename
 952746	    481	   7296	 960523	  ea80b	busybox_old
 952768	    481	   7288	 960537	  ea819	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2019-05-31 23:39:22 +02:00
parent 91755cb16d
commit 65c34c52df
4 changed files with 36 additions and 23 deletions
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8
networking/udhcp/dhcpc.c
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@ -1271,6 +1271,10 @@ int udhcpc_main(int argc UNUSED_PARAM, char **argv)
client_data.sockfd = -1;
str_V = "udhcp "BB_VER;
/* Make sure fd 0,1,2 are open */
/* Set up the signal pipe on fds 3,4 - must be before openlog() */
udhcp_sp_setup();
/* Parse command line */
opt = getopt32long(argv, "^"
/* O,x: list; -T,-t,-A take numeric param */
@ -1385,14 +1389,10 @@ int udhcpc_main(int argc UNUSED_PARAM, char **argv)
logmode |= LOGMODE_SYSLOG;
}
/* Make sure fd 0,1,2 are open */
bb_sanitize_stdio();
/* Create pidfile */
write_pidfile(client_data.pidfile);
/* Goes to stdout (unless NOMMU) and possibly syslog */
bb_info_msg("started, v"BB_VER);
/* Set up the signal pipe */
udhcp_sp_setup();
/* We want random_xid to be random... */
srand(monotonic_us());