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make /etc/network parsing configurable. -200 bytes when off.

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This commit is contained in:
Denis Vlasenko 2007-06-19 11:24:47 +00:00
parent 6d9ea24611
commit a61cb92f2d
2 changed files with 13 additions and 4 deletions
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8
libbb/Config.in
View File

@ -26,6 +26,14 @@ config MD5_SIZE_VS_SPEED
2 3.0 5088
3 (smallest) 5.1 4912
config FEATURE_ETC_NETWORKS
bool "Support for /etc/networks"
default n
help
Enable support for network names in /etc/networks. This is
a rarely used feature which allows you to use names
instead of IP/mask pairs in route command.
config FEATURE_EDITING
bool "Command line editing"
default n

9
libbb/inet_common.c
View File

@ -14,7 +14,9 @@
int INET_resolve(const char *name, struct sockaddr_in *s_in, int hostfirst)
{
struct hostent *hp;
#if ENABLE_FEATURE_ETC_NETWORKS
struct netent *np;
#endif
/* Grmpf. -FvK */
s_in->sin_family = AF_INET;
@ -43,6 +45,7 @@ int INET_resolve(const char *name, struct sockaddr_in *s_in, int hostfirst)
return 0;
}
}
#if ENABLE_FEATURE_ETC_NETWORKS
/* Try the NETWORKS database to see if this is a known network. */
#ifdef DEBUG
bb_error_msg("getnetbyname(%s)", name);
@ -52,6 +55,7 @@ int INET_resolve(const char *name, struct sockaddr_in *s_in, int hostfirst)
s_in->sin_addr.s_addr = htonl(np->n_net);
return 1;
}
#endif
if (hostfirst) {
/* Don't try again */
return -1;
@ -140,10 +144,7 @@ char *INET_rresolve(struct sockaddr_in *s_in, int numeric, uint32_t netmask)
ent = gethostbyaddr((char *) &ad, 4, AF_INET);
if (ent)
name = xstrdup(ent->h_name);
} else {
/* Hmmm... this is very rare to have named nets,
* and this getnetbyaddr() call is the only one in bbox.
* Maybe get rid of or make configurable? */
} else if (ENABLE_FEATURE_ETC_NETWORKS) {
struct netent *np;
#ifdef DEBUG
bb_error_msg("getnetbyaddr (%08x)", (unsigned)host_ad);