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random_seed: try other alternatives if reading /dev/random fails
author
Måns Rullgård
<mans@mansr.com>
Thu, 11 Mar 2010 02:32:11 +0000
(
02:32
+0000)
committer
Måns Rullgård
<mans@mansr.com>
Thu, 11 Mar 2010 02:32:11 +0000
(
02:32
+0000)
Originally committed as revision 22450 to svn://svn.ffmpeg.org/ffmpeg/trunk
libavutil/random_seed.c
patch
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diff --git
a/libavutil/random_seed.c
b/libavutil/random_seed.c
index
2b2985d
..
d397565
100644
(file)
--- a/
libavutil/random_seed.c
+++ b/
libavutil/random_seed.c
@@
-31,8
+31,9
@@
uint32_t ff_random_get_seed(void)
if ((fd = open("/dev/random", O_RDONLY)) == -1)
fd = open("/dev/urandom", O_RDONLY);
if (fd != -1){
- read(fd, &seed, 4);
+
int err =
read(fd, &seed, 4);
close(fd);
+ if (err == 4)
return seed;
}
#ifdef AV_READ_TIME