summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorDenys Vlasenko2019-01-07 15:23:18 +0100
committerDenys Vlasenko2019-01-07 15:23:18 +0100
commitb80bdeba0248e2742cf801e7429d5d7aad69d26d (patch)
tree6d46265d1fbd15a4fddabe5ef33ade96ba15ec06
parentedca770d11edcc5b5548a62c068b2e75f1ccb54a (diff)
downloadbusybox-b80bdeba0248e2742cf801e7429d5d7aad69d26d.zip
busybox-b80bdeba0248e2742cf801e7429d5d7aad69d26d.tar.gz
udhcp: code shrink
function old new delta attach_option 406 349 -57 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--networking/udhcp/common.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/networking/udhcp/common.c b/networking/udhcp/common.c
index 41b05b8..4c2221b 100644
--- a/networking/udhcp/common.c
+++ b/networking/udhcp/common.c
@@ -422,6 +422,7 @@ static NOINLINE void attach_option(
if (errno)
bb_error_msg_and_die("malformed hex string '%s'", buffer);
length = end - allocated;
+ buffer = allocated;
}
#if ENABLE_FEATURE_UDHCP_RFC3397
if ((optflag->flags & OPTION_TYPE_MASK) == OPTION_DNS_STRING) {
@@ -441,15 +442,14 @@ static NOINLINE void attach_option(
new->data = xmalloc(length + OPT_DATA);
new->data[OPT_CODE] = optflag->code;
new->data[OPT_LEN] = length;
- memcpy(new->data + OPT_DATA, (allocated ? allocated : buffer),
- length);
+ memcpy(new->data + OPT_DATA, buffer, length);
} else {
new->data = xmalloc(length + D6_OPT_DATA);
new->data[D6_OPT_CODE] = optflag->code >> 8;
new->data[D6_OPT_CODE + 1] = optflag->code & 0xff;
new->data[D6_OPT_LEN] = length >> 8;
new->data[D6_OPT_LEN + 1] = length & 0xff;
- memcpy(new->data + D6_OPT_DATA, (allocated ? allocated : buffer),
+ memcpy(new->data + D6_OPT_DATA, buffer,
length);
}
@@ -472,6 +472,8 @@ static NOINLINE void attach_option(
/* actually 255 is ok too, but adding a space can overlow it */
existing->data = xrealloc(existing->data, OPT_DATA + 1 + old_len + length);
+// So far dhcp_optflags[] has no OPTION_STRING[_HOST] | OPTION_LIST items
+#if 0
if ((optflag->flags & OPTION_TYPE_MASK) == OPTION_STRING
|| (optflag->flags & OPTION_TYPE_MASK) == OPTION_STRING_HOST
) {
@@ -479,7 +481,9 @@ static NOINLINE void attach_option(
existing->data[OPT_DATA + old_len] = ' ';
old_len++;
}
- memcpy(existing->data + OPT_DATA + old_len, (allocated ? allocated : buffer), length);
+#endif
+
+ memcpy(existing->data + OPT_DATA + old_len, buffer, length);
existing->data[OPT_LEN] = old_len + length;
} /* else, ignore the data, we could put this in a second option in the future */
} /* else, ignore the new data */
@@ -553,7 +557,7 @@ int FAST_FUNC udhcp_str2optset(const char *const_str, void *arg,
if (retval)
retval = udhcp_str2nip(val, buffer + 4);
break;
-case_OPTION_STRING:
+ case_OPTION_STRING:
case OPTION_STRING:
case OPTION_STRING_HOST:
#if ENABLE_FEATURE_UDHCP_RFC3397