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udhcpc: add -o "do not request options by default" switch

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(by L. Gabriel Somlo <somlo AT cmu.edu>)

function                                             old     new   delta
udhcpc_main                                         2513    2554     +41
static.udhcpc_longopts                               226     247     +21
add_param_req_option                                 119     132     +13
packed_usage                                       23952   23964     +12
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/0 up/down: 87/0)               Total: 87 bytes
This commit is contained in:
Denis Vlasenko
2008-04-02 13:04:19 +00:00
parent 0edbdd8ac8
commit 2e4c3c4cc3
6 changed files with 30 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
networking/udhcp/dhcpc.c
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@@ -182,6 +182,7 @@ int udhcpc_main(int argc ATTRIBUTE_UNUSED, char **argv)
OPT_W = 1 << 21,
#endif
OPT_P = 1 << 22,
OPT_o = 1 << 23,
};
#if ENABLE_GETOPT_LONG
static const char udhcpc_longopts[] ALIGN1 =
@@ -211,6 +212,7 @@ int udhcpc_main(int argc ATTRIBUTE_UNUSED, char **argv)
#if ENABLE_FEATURE_UDHCP_PORT
"client-port\0" Required_argument "P"
#endif
"no-default-options\0" No_argument "o"
;
#endif
/* Default options. */
@@ -230,7 +232,7 @@ int udhcpc_main(int argc ATTRIBUTE_UNUSED, char **argv)
opt = getopt32(argv, "c:CV:fbH:h:F:i:np:qRr:s:T:t:vSA:"
USE_FEATURE_UDHCPC_ARPING("aW:")
USE_FEATURE_UDHCP_PORT("P:")
"O:"
"O:o"
, &str_c, &str_V, &str_h, &str_h, &str_F
, &client_config.interface, &client_config.pidfile, &str_r
, &client_config.script
@@ -291,6 +293,8 @@ int udhcpc_main(int argc ATTRIBUTE_UNUSED, char **argv)
SERVER_PORT = CLIENT_PORT - 1;
}
#endif
if (opt & OPT_o)
client_config.no_default_options = 1;
while (list_O) {
int n = index_in_strings(dhcp_option_strings, list_O->data);
if (n < 0)