diff options
Diffstat (limited to 'src/sysdeps/trydevrandom.c')
-rw-r--r-- | src/sysdeps/trydevrandom.c | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/src/sysdeps/trydevrandom.c b/src/sysdeps/trydevrandom.c deleted file mode 100644 index 395d008..0000000 --- a/src/sysdeps/trydevrandom.c +++ /dev/null @@ -1,54 +0,0 @@ -/* ISC license. */ - -#include <unistd.h> -#include <sys/types.h> -#include <fcntl.h> -#include <errno.h> - -static int fd_read (int fd, char *buf, unsigned int len) -{ - register int r ; - do r = read(fd, buf, len) ; - while ((r == -1) && (errno == EINTR)) ; - return r ; -} - -static unsigned int allread (int fd, register char *buf, register unsigned int len) -{ - register unsigned int written = 0 ; - while (len) - { - register int w = fd_read(fd, buf, len) ; - if (!w) errno = EPIPE ; - if (w <= 0) break ; - written += w ; - buf += w ; - len -= w ; - } - return written ; -} - -static int byte_diff (char *s, unsigned int n, char *t) -{ - for (;;) - { - if (!n) return 0 ; - if (*s != *t) break ; - ++s ; ++t ; --n ; - } - return ((int)(unsigned int)(unsigned char) *s) - - ((int)(unsigned int)(unsigned char) *t); -} - -int main () -{ - char a[64] ; - char b[64] ; - int fd = open("/dev/random", O_RDONLY) ; - if ((fd == -1) || (allread(fd, a, 64) < 64) ) return 111 ; - close(fd) ; - fd = open("/dev/random", O_RDONLY) ; - if ((fd == -1) || (allread(fd, b, 64) < 64) ) return 111 ; - close(fd) ; - return !byte_diff(a, 64, b) ; -} |