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add open_read_close() and similar stuff

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This commit is contained in:
Denis Vlasenko
2006-10-14 02:23:43 +00:00
parent 88ca067690
commit ea62077b85
38 changed files with 228 additions and 234 deletions
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7
networking/udhcp/clientpacket.c
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@@ -39,16 +39,13 @@ unsigned long random_xid(void)
{
static int initialized;
if (!initialized) {
int fd;
unsigned long seed;
fd = open("/dev/urandom", 0);
if (fd < 0 || read(fd, &seed, sizeof(seed)) < 0) {
bb_info_msg("Could not load 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);
}
if (fd >= 0) close(fd);
srand(seed);
initialized++;
}