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authorDenis Vlasenko2007-06-17 23:40:26 +0000
committerDenis Vlasenko2007-06-17 23:40:26 +0000
commitbd7bb299c0e9ee5ff52c9d12b46fb14a907b34da (patch)
tree117a635e9457e1a932bc64941db5869e33179fc9 /networking/udhcp
parent459be35234cc24b69309eb0ee22600024c73713e (diff)
downloadbusybox-bd7bb299c0e9ee5ff52c9d12b46fb14a907b34da.zip
busybox-bd7bb299c0e9ee5ff52c9d12b46fb14a907b34da.tar.gz
wget: use monotonic_sec instead of gettimeofday
zcip: use monotonic_us instead of gettimeofday udhcpcd: simpler, shorter random_xid() function old new delta monotonic_sec - 41 +41 find_pair 164 180 +16 run_list_real 2018 2028 +10 cmp_main 547 555 +8 collect_ctx 112 119 +7 singlemount 4544 4549 +5 time_main 1124 1128 +4 static.start_sec - 4 +4 static.lastupdate_sec - 4 +4 sock - 4 +4 read_package_field 253 257 +4 pick 38 40 +2 get_next_line 145 147 +2 count_lines 59 61 +2 process_stdin 435 433 -2 xstrtoul_range_sfx 229 226 -3 static.initialized 4 1 -3 dhcprelay_main 1125 1122 -3 catcher 380 377 -3 arping_main 1969 1966 -3 s 8 4 -4 cfg 4 - -4 static.lastupdate 8 - -8 start 8 - -8 random_xid 95 33 -62 .rodata 129114 129050 -64 zcip_main 1731 1576 -155 progressmeter 1035 867 -168 ------------------------------------------------------------------------------ (add/remove: 4/3 grow/shrink: 10/11 up/down: 113/-490) Total: -377 bytes
Diffstat (limited to 'networking/udhcp')
-rw-r--r--networking/udhcp/clientpacket.c16
-rw-r--r--networking/udhcp/dhcpc.h2
2 files changed, 6 insertions, 12 deletions
diff --git a/networking/udhcp/clientpacket.c b/networking/udhcp/clientpacket.c
index 69d7f2d..af97962 100644
--- a/networking/udhcp/clientpacket.c
+++ b/networking/udhcp/clientpacket.c
@@ -25,19 +25,13 @@
/* Create a random xid */
-unsigned long random_xid(void)
+unsigned random_xid(void)
{
- static int initialized;
+ static smallint initialized;
+
if (!initialized) {
- unsigned long seed;
-
- if (open_read_close("/dev/urandom", &seed, sizeof(seed)) < 0) {
- bb_info_msg("Cannot load seed "
- "from /dev/urandom: %s", strerror(errno));
- seed = time(0);
- }
- srand(seed);
- initialized++;
+ srand(monotonic_us());
+ initialized = 1;
}
return rand();
}
diff --git a/networking/udhcp/dhcpc.h b/networking/udhcp/dhcpc.h
index 4ddd121..fa091bf 100644
--- a/networking/udhcp/dhcpc.h
+++ b/networking/udhcp/dhcpc.h
@@ -38,7 +38,7 @@ extern struct client_config_t client_config;
/*** clientpacket.h ***/
-unsigned long random_xid(void);
+unsigned random_xid(void);
int send_discover(unsigned long xid, unsigned long requested);
int send_selecting(unsigned long xid, unsigned long server, unsigned long requested);
int send_renew(unsigned long xid, unsigned long server, unsigned long ciaddr);