diff options
Diffstat (limited to 'src/haveged.c')
| -rw-r--r-- | src/haveged.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/haveged.c b/src/haveged.c index 9ec1004..b74c9d0 100644 --- a/src/haveged.c +++ b/src/haveged.c @@ -79,6 +79,7 @@ static struct pparams defaults = { .buffersz = 0, .detached = 0, .foreground = 0, + .once = 0, .d_cache = 0, .i_cache = 0, .run_level = 0, @@ -151,6 +152,7 @@ int main(int argc, char **argv) "i", "inst", "1", SETTINGR("Instruction cache size [KB], with fallback to: ", GENERIC_ICACHE), "f", "file", "1", "Sample output file, default: '" OUTPUT_DEFAULT "', '-' for stdout", "F", "Foreground", "0", "Run daemon in foreground", + "e", "once", "0", "Provide entropy to the kernel once and quit immediatelly", "r", "run", "1", "0=daemon, 1=config info, >1=<r>KB sample", "n", "number", "1", "Output size in [k|m|g|t] bytes, 0 = unlimited to stdout", "o", "onlinetest", "1", "[t<x>][c<x>] x=[a[n][w]][b[w]] 't'ot, 'c'ontinuous, default: ta8b", @@ -280,6 +282,10 @@ int main(int argc, char **argv) params->setup |= RUN_IN_FG; params->foreground = 1; break; + case 'e': + params->setup |= RUN_ONCE; + params->once = 1; + break; case 'b': params->buffersz = ATOU(optarg) * 1024; if (params->buffersz<4) @@ -640,7 +646,7 @@ static void run_daemon( /* RETURN: nothing */ t[1] = time(NULL); if (t[1] - t[0] > 60) { - /* add entropy on daemon start unconditionally */ + /* add entropy on daemon start and then every 60 seconds unconditionally */ nbytes = poolSize / 2; r = (nbytes+sizeof(H_UINT)-1)/sizeof(H_UINT); if (havege_rng(h, (H_UINT *)output->buf, r)<1) @@ -650,6 +656,8 @@ static void run_daemon( /* RETURN: nothing */ output->entropy_count = nbytes * 8; if (ioctl(random_fd, RNDADDENTROPY, output) == -1) printf("Warning: RNDADDENTROPY failed!"); + if (params->once == 1) + return; t[0] = t[1]; continue; } |