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udhcpc: kill undocumented -W, it was a no-op.

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fix option parsing in the case some CONFIG_x are off.
 disable -b on NOMMU, make backgrounding work correctly
 (if a bit differently from MMU case). Previously,
 it wasn't working at all.
 stop using global data for flags in main(), opt
 bitfield works as well.

function                                             old     new   delta
cryptpw_main                                         177     153     -24
packed_usage                                       24478   24452     -26
client_background                                     26       -     -26
udhcpc_main                                         2462    2372     -90
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/3 up/down: 0/-166)           Total: -166 bytes
This commit is contained in:
Denis Vlasenko
2008-06-13 20:44:05 +00:00
parent 76f812803b
commit 21765fa063
6 changed files with 108 additions and 100 deletions
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4
include/usage.h
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@ -4246,7 +4246,9 @@
"\n -O,--request-option=OPT Request DHCP option OPT (cumulative)" \
"\n -o,--no-default-options Do not request any options (unless -O is also given)" \
"\n -f,--foreground Run in foreground" \
USE_FOR_MMU( \
"\n -b,--background Background if lease is not immediately obtained" \
) \
"\n -S,--syslog Log to syslog too" \
"\n -n,--now Exit with failure if lease is not immediately obtained" \
"\n -q,--quit Quit after obtaining lease" \
@ -4273,7 +4275,9 @@
"\n -O OPT Request DHCP option OPT (cumulative)" \
"\n -o Do not request any options (unless -O is also given)" \
"\n -f Run in foreground" \
USE_FOR_MMU( \
"\n -b Background if lease is not immediately obtained" \
) \
"\n -S Log to syslog too" \
"\n -n Exit with failure if lease is not immediately obtained" \
"\n -q Quit after obtaining lease" \