diff options
Diffstat (limited to 'src/haveged.c')
| -rw-r--r-- | src/haveged.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/haveged.c b/src/haveged.c index fb2636f..e061079 100644 --- a/src/haveged.c +++ b/src/haveged.c @@ -26,6 +26,8 @@ #include <signal.h> #include <fcntl.h> #include <sys/time.h> +#include <sys/types.h> +#include <sys/stat.h> #include <unistd.h> #ifndef NO_DAEMON @@ -530,6 +532,7 @@ static void run_daemon( /* RETURN: nothing */ int conn_fd = -1; #endif struct rand_pool_info *output; + struct stat stat_buf; if (0 != params->run_level) { anchor_info(h); @@ -544,6 +547,10 @@ static void run_daemon( /* RETURN: nothing */ anchor_info(h); if (params->low_water>0) set_watermark(params->low_water); + if ( lstat(params->random_device, &stat_buf) != 0 ) + error_exit("lstat has failed for the random device \"%s\": %s", params->random_device, strerror(errno)); + if ( S_ISLNK(stat_buf.st_mode) ) + error_exit("random device \"%s\" is a link. This is not supported for the security reasons.", params->random_device); random_fd = open(params->random_device, O_RDWR); if (random_fd == -1) error_exit("Couldn't open random device: %s", strerror(errno)); |