util-linux/include/randutils.h

#ifndef UTIL_LINUX_RANDUTILS
#define UTIL_LINUX_RANDUTILS

#ifdef HAVE_SRANDOM
#define srand(x)	srandom(x)
#define rand()		random()
#endif

extern int random_get_fd(void);
extern void random_get_bytes(void *buf, size_t nbytes, int fd);

#endif
lib: random utilities Add a random number(s) generator specific file. The intial functions are based on what libuuid provide. I did some modifications like avoid WIN32 checks - this is util-LINUX. [kzak@redhat.com: - move jrand_seed to lib/randutils.c - use TLS for jrand_seed (like original code from libuuid) - use size_t for buffer sizes - add close() to random_get_bytes] Signed-off-by: Davidlohr Bueso <dave@gnu.org> Signed-off-by: Karel Zak <kzak@redhat.com> 2012-04-05 23:52:04 +02:00			`#ifndef UTIL_LINUX_RANDUTILS`
			`#define UTIL_LINUX_RANDUTILS`

			`#ifdef HAVE_SRANDOM`
			`#define srand(x) srandom(x)`
			`#define rand() random()`
			`#endif`

			`extern int random_get_fd(void);`
libuuid: avoid double open and leaking descriptor We are opening /dev/urandom twice in uuid_generate(): first to check if the file is available and then later __uuid_generate_random() again to actually get the random data. Moreover, descriptor from the first open is leaking. Fix by passign the descriptor down the stack and reusing it there. References: http://marc.info/?l=util-linux-ng&m=133406051131131&w=2 Signed-off-by: Petr Uzel <petr.uzel@suse.cz> 2012-05-03 21:02:01 +02:00			`extern void random_get_bytes(void *buf, size_t nbytes, int fd);`
lib: random utilities Add a random number(s) generator specific file. The intial functions are based on what libuuid provide. I did some modifications like avoid WIN32 checks - this is util-LINUX. [kzak@redhat.com: - move jrand_seed to lib/randutils.c - use TLS for jrand_seed (like original code from libuuid) - use size_t for buffer sizes - add close() to random_get_bytes] Signed-off-by: Davidlohr Bueso <dave@gnu.org> Signed-off-by: Karel Zak <kzak@redhat.com> 2012-04-05 23:52:04 +02:00
			`#endif`