diff options
author | Avneesh Sachdev <avneesh@opensourcerouting.org> | 2012-04-09 00:25:15 -0700 |
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committer | Avneesh Sachdev <avneesh@opensourcerouting.org> | 2012-04-09 00:25:15 -0700 |
commit | 3cf6c2b4e43f44a977d218c96c26250654ae333e (patch) | |
tree | e017cde2015fbf3ef6c250327428d7c6152aa8f7 /babeld/kernel.c | |
parent | 01d7ff0a2166a422c56bd26f04fc22832a9e690b (diff) | |
parent | e96b312150d8e376c1ef463793d1929eca3618d5 (diff) |
Merge branch 'quagga' into google-bgp-multipath
Conflicts:
bgpd/bgp_route.c
Diffstat (limited to 'babeld/kernel.c')
-rw-r--r-- | babeld/kernel.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/babeld/kernel.c b/babeld/kernel.c new file mode 100644 index 00000000..c31f617b --- /dev/null +++ b/babeld/kernel.c @@ -0,0 +1,76 @@ +/* + * This file is free software: you may copy, redistribute and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation, either version 2 of the License, or (at your + * option) any later version. + * + * This file is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * This file incorporates work covered by the following copyright and + * permission notice: + * + +Copyright 2007, 2008 by Grégoire Henry, Julien Cristau and Juliusz Chroboczek + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ + +#include <sys/time.h> +#include <sys/param.h> +#include <time.h> + +#include "babeld.h" + +#include "kernel_zebra.c" + +/* Like gettimeofday, but returns monotonic time. If POSIX clocks are not + available, falls back to gettimeofday but enforces monotonicity. */ +int +gettime(struct timeval *tv) +{ + return quagga_gettime(QUAGGA_CLK_MONOTONIC, tv); +} + +/* If /dev/urandom doesn't exist, this will fail with ENOENT, which the + caller will deal with gracefully. */ + +int +read_random_bytes(void *buf, size_t len) +{ + int fd; + int rc; + + fd = open("/dev/urandom", O_RDONLY); + if(fd < 0) { + rc = -1; + } else { + rc = read(fd, buf, len); + if(rc < 0 || (unsigned) rc < len) + rc = -1; + close(fd); + } + return rc; +} + |