diff options
Diffstat (limited to 'package/cfgfs/src/sys_bsd.c')
| -rw-r--r-- | package/cfgfs/src/sys_bsd.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/package/cfgfs/src/sys_bsd.c b/package/cfgfs/src/sys_bsd.c new file mode 100644 index 000000000..b37fd5637 --- /dev/null +++ b/package/cfgfs/src/sys_bsd.c @@ -0,0 +1,96 @@ +/* $MirOS: contrib/hosted/fwcf/sys_bsd.c,v 1.4 2007/03/13 18:14:30 tg Exp $ */ + +/*- + * Copyright (c) 2006, 2007 + * Thorsten Glaser <tg@mirbsd.de> + * + * Provided that these terms and disclaimer and all copyright notices + * are retained or reproduced in an accompanying document, permission + * is granted to deal in this work without restriction, including un- + * limited rights to use, publicly perform, distribute, sell, modify, + * merge, give away, or sublicence. + * + * This work is provided "AS IS" and WITHOUT WARRANTY of any kind, to + * the utmost extent permitted by applicable law, neither express nor + * implied; without malicious intent or gross negligence. In no event + * may a licensor, author or contributor be held liable for indirect, + * direct, other damage, loss, or other issues arising in any way out + * of dealing in the work, even if advised of the possibility of such + * damage or existence of a defect, except proven that it results out + * of said person's immediate fault when using the work as intended. + */ + +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> + +#include "defs.h" +#include "sysdeps.h" + +__RCSID("$MirOS: contrib/hosted/fwcf/sys_bsd.c,v 1.4 2007/03/13 18:14:30 tg Exp $"); + +void +pull_rndata(uint8_t *buf, size_t n) +{ +#ifdef RND_DISABLE + while (n--) + *buf++ = 0xF6; + *--buf = 0xFF; +#else +#ifdef RND_DEBUG + fprintf(stderr, "writing %ld bytes of entropy\n", n); + while (n > 4) { +#else + while (n >= 4) { +#endif + *(uint32_t *)buf = arc4random(); +#ifdef RND_DEBUG + *buf = 0xF6; +#endif + buf += 4; + n -= 4; + } + while (n) { +#ifdef RND_DEBUG + *buf++ = 0xF6; +#else + *buf++ = arc4random() & 0xFF; +#endif + n--; + } +#ifdef RND_DEBUG + *--buf = 0xFF; +#endif +#endif +} + +void +push_rndata(uint8_t *buf, size_t n) +{ +#ifdef RND_DEBUG + size_t i; +#endif +#ifdef __MirBSD__ + arc4random_pushb(buf, n); +#else + int fd; + uint32_t x; + + arc4random_addrandom(buf, n); + x = arc4random(); + if ((fd = open("/dev/arandom", O_WRONLY)) >= 0) { + write(fd, &x, 4); + close(fd); + } else + warn("cannot write to /dev/arandom"); +#endif +#ifdef RND_DEBUG + printf("reading %ld bytes of entropy\n", n); + for (i = 0; i < n; ++i) { + printf(" %02X", buf[i]); + if ((i & 0xF) == 0xF) + putchar('\n'); + } + putchar('\n'); +#endif +} |