diff options
Diffstat (limited to 'cipher/rndlinux.c')
| -rw-r--r-- | cipher/rndlinux.c | 29 |
1 files changed, 17 insertions, 12 deletions
diff --git a/cipher/rndlinux.c b/cipher/rndlinux.c index 9d40f47b8..709a7ad54 100644 --- a/cipher/rndlinux.c +++ b/cipher/rndlinux.c @@ -117,28 +117,33 @@ rndlinux_gather_random( void (*add)(const void*, size_t, int), int requester, #endif #endif while( length ) { +#ifdef FD_SETSIZE fd_set rfds; struct timeval tv; - int rc; + int rc; FD_ZERO(&rfds); - FD_SET(fd, &rfds); tv.tv_sec = 3; tv.tv_usec = 0; - if( !(rc=select(fd+1, &rfds, NULL, NULL, &tv)) ) { - if( !warn ) + if (fd < FD_SETSIZE) + { + FD_SET(fd, &rfds); + if( !(rc=select(fd+1, &rfds, NULL, NULL, &tv)) ) { + if( !warn ) tty_printf( _("\n" "Not enough random bytes available. Please do some other work to give\n" "the OS a chance to collect more entropy! (Need %d more bytes)\n"), (int)length ); - warn = 1; - continue; - } - else if( rc == -1 ) { - tty_printf( - "select() error: %s\n", strerror(errno)); - continue; - } + warn = 1; + continue; + } + else if( rc == -1 ) { + tty_printf( + "select() error: %s\n", strerror(errno)); + continue; + } + } +#endif /*FD_SETSIZE*/ do { int nbytes = length < sizeof(buffer)? length : sizeof(buffer); |