diff options
| -rw-r--r-- | payloads/libpayload/LICENSES | 6 | ||||
| -rw-r--r-- | payloads/libpayload/include/libpayload.h | 2 | ||||
| -rw-r--r-- | payloads/libpayload/libc/Makefile.inc | 1 | ||||
| -rw-r--r-- | payloads/libpayload/libc/rand.c | 52 |
4 files changed, 61 insertions, 0 deletions
diff --git a/payloads/libpayload/LICENSES b/payloads/libpayload/LICENSES index d81eb72636..191ad79950 100644 --- a/payloads/libpayload/LICENSES +++ b/payloads/libpayload/LICENSES @@ -66,6 +66,12 @@ holders, and the exact license terms that apply. Original files: lib/libalias/alias_util.c, function LibAliasInternetChecksum() Current version we use: CVS revision 1.15 2004/07/06 12:13:28 +* libc/rand.c: 3-clause BSD license + Source: OpenBSD + http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/stdlib/rand.c + Original files: src/lib/libc/stdlib/rand.c + Current version we use: CVS revision 1.9 2005/8/8 08:05:37 + * libc/memory.c: 3-clause BSD license Source: HelenOS, http://www.helenos.eu svn checkout svn://svn.helenos.eu/HelenOS/trunk HelenOS diff --git a/payloads/libpayload/include/libpayload.h b/payloads/libpayload/include/libpayload.h index 2cdb0d00f6..b74fbfeab2 100644 --- a/payloads/libpayload/include/libpayload.h +++ b/payloads/libpayload/include/libpayload.h @@ -53,6 +53,8 @@ #define BYTE_ORDER BIG_ENDIAN #endif +#define RAND_MAX 0x7fffffff + /* Some NVRAM byte definitions */ #define NVRAM_RTC_SECONDS 0 #define NVRAM_RTC_MINUTES 2 diff --git a/payloads/libpayload/libc/Makefile.inc b/payloads/libpayload/libc/Makefile.inc index ee64b60644..44975a6a14 100644 --- a/payloads/libpayload/libc/Makefile.inc +++ b/payloads/libpayload/libc/Makefile.inc @@ -29,3 +29,4 @@ TARGETS-y += libc/malloc.o libc/printf.o libc/console.o libc/string.o TARGETS-y += libc/memory.o libc/ctype.o libc/ipchecksum.o libc/lib.o +TARGETS-y += libc/rand.o diff --git a/payloads/libpayload/libc/rand.c b/payloads/libpayload/libc/rand.c new file mode 100644 index 0000000000..d490809119 --- /dev/null +++ b/payloads/libpayload/libc/rand.c @@ -0,0 +1,52 @@ +/* + * This file is part of the libpayload project. + * + * It was originally taken from the OpenBSD project. + * + * Copyright (c) 1990 The Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <libpayload.h> + +static unsigned int next = 1; + +int rand_r(unsigned int *seed) +{ + *seed = *seed * 1103515245 + 12345; + return (*seed % ((unsigned int)RAND_MAX + 1)); +} + +int rand(void) +{ + return (rand_r(&next)); +} + +void srand(unsigned int seed) +{ + next = seed; +} |