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See ChangeLog: Mon Dec 14 21:18:49 CET 1998 Werner Koch

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This commit is contained in:
Werner Koch 1998-12-14 20:22:42 +00:00
parent c6be02da77
commit 7a7a5630af
21 changed files with 642 additions and 524 deletions
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27
cipher/rndlinux.c
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@ -45,7 +45,8 @@
#endif
static int open_device( const char *name, int minor );
static int gather_random( byte *buffer, size_t *r_length, int level );
static int gather_random( void (*add)(const void*, size_t, int), int requester,
size_t length, int level );
#ifdef IS_MODULE
static void tty_printf(const char *fmt, ... )
@ -81,15 +82,15 @@ open_device( const char *name, int minor )
static int
gather_random( byte *buffer, size_t *r_length, int level )
gather_random( void (*add)(const void*, size_t, int), int requester,
size_t length, int level )
{
static int fd_urandom = -1;
static int fd_random = -1;
int fd;
int n;
int warn=0;
size_t length = *r_length;
/* note: we will always return the requested length */
byte buffer[768];
if( level >= 2 ) {
if( fd_random == -1 )
@ -101,7 +102,8 @@ gather_random( byte *buffer, size_t *r_length, int level )
fd_urandom = open_device( NAME_OF_DEV_URANDOM, 9 );
fd = fd_urandom;
}
do {
while( length ) {
fd_set rfds;
struct timeval tv;
int rc;
@ -125,20 +127,21 @@ gather_random( byte *buffer, size_t *r_length, int level )
}
do {
n = read(fd, buffer, length );
if( n >= 0 && n > length ) {
int nbytes = length < sizeof(buffer)? length : sizeof(buffer);
n = read(fd, buffer, nbytes );
if( n >= 0 && n > nbytes ) {
g10_log_error("bogus read from random device (n=%d)\n", n );
n = length;
n = nbytes;
}
} while( n == -1 && errno == EINTR );
if( n == -1 )
g10_log_fatal("read error on random device: %s\n", strerror(errno));
assert( n <= length );
buffer += n;
(*add)( buffer, n, requester );
length -= n;
} while( length );
}
memset(buffer, 0, sizeof(buffer) );
return 100; /* always 100% useful at the requested level */
return 0; /* success */
}