#include <config.h>#include <sys/param.h>#include <sys/types.h>#include <sys/time.h>#include <sys/stat.h>#include <sys/socket.h>#include <sys/un.h>#include <unistd.h>#include <isc/platform.h>#include <isc/strerror.h>#include "errno2result.h"#include "../entropy.c"Go to the source code of this file.
Data Structures | |
| struct | isc_entropyusocketsource_t |
Defines | |
| #define | FILESOURCE_HANDLE_TYPE int |
| There is only one variable in the entropy data structures that is not system independent, but pulling the structure that uses it into this file ultimately means pulling several other independent structures here also to resolve their interdependencies. Thus only the problem variable's type is defined here. | |
Functions | |
| static unsigned int | get_from_filesource (isc_entropysource_t *source, isc_uint32_t desired) |
| static unsigned int | get_from_usocketsource (isc_entropysource_t *source, isc_uint32_t desired) |
| static void | fillpool (isc_entropy_t *ent, unsigned int desired, isc_boolean_t blocking) |
| static int | wait_for_sources (isc_entropy_t *ent) |
| static void | destroyfilesource (isc_entropyfilesource_t *source) |
| static void | destroyusocketsource (isc_entropyusocketsource_t *source) |
| static isc_result_t | make_nonblock (int fd) |
| isc_result_t | isc_entropy_createfilesource (isc_entropy_t *ent, const char *fname) |
| Create a new entropy source from a file. | |
| #define FILESOURCE_HANDLE_TYPE int |
There is only one variable in the entropy data structures that is not system independent, but pulling the structure that uses it into this file ultimately means pulling several other independent structures here also to resolve their interdependencies. Thus only the problem variable's type is defined here.
| static unsigned int get_from_filesource | ( | isc_entropysource_t * | source, | |
| isc_uint32_t | desired | |||
| ) | [static] |
Definition at line 73 of file entropy.c.
References isc_entropysource::ent, entropypool_adddata(), ISC_MIN, ISC_TRUE, and isc_entropysource::sources.
Referenced by fillpool().
| static unsigned int get_from_usocketsource | ( | isc_entropysource_t * | source, | |
| isc_uint32_t | desired | |||
| ) | [static] |
Definition at line 113 of file entropy.c.
References isc_entropysource::ent, entropypool_adddata(), INSIST, ISC_MIN, ISC_TRUE, and isc_entropysource::sources.
Referenced by fillpool().
| static void fillpool | ( | isc_entropy_t * | ent, | |
| unsigned int | desired, | |||
| isc_boolean_t | blocking | |||
| ) | [static] |
Definition at line 250 of file entropy.c.
References isc_entropypool_t::entropy, ENTROPY_SOURCETYPE_CALLBACK, ENTROPY_SOURCETYPE_FILE, ENTROPY_SOURCETYPE_USOCKET, get_from_callback(), get_from_filesource(), get_from_usocketsource(), isc_entropy::initialized, ISC_LIST_HEAD, ISC_LIST_NEXT, ISC_MAX, ISC_MIN, isc_entropy::nextsource, isc_entropy::nsources, isc_entropy::pool, isc_entropypool_t::pseudo, REQUIRE, RND_POOLBITS, THRESHOLD_BITS, isc_entropysource::type, VALID_ENTROPY, and wait_for_sources().
| static int wait_for_sources | ( | isc_entropy_t * | ent | ) | [static] |
Definition at line 390 of file entropy.c.
References ENTROPY_SOURCETYPE_FILE, ENTROPY_SOURCETYPE_USOCKET, ISC_LIST_HEAD, ISC_LIST_NEXT, ISC_MAX, isc_entropysource::sources, and isc_entropysource::type.
| static void destroyfilesource | ( | isc_entropyfilesource_t * | source | ) | [static] |
| static void destroyusocketsource | ( | isc_entropyusocketsource_t * | source | ) | [static] |
| static isc_result_t make_nonblock | ( | int | fd | ) | [static] |
Definition at line 457 of file entropy.c.
References isc__strerror(), ISC_R_SUCCESS, ISC_R_UNEXPECTED, ISC_STRERRORSIZE, and UNEXPECTED_ERROR.
Referenced by internal_accept(), and isc_entropy_createfilesource().
| isc_result_t isc_entropy_createfilesource | ( | isc_entropy_t * | ent, | |
| const char * | fname | |||
| ) |
Create a new entropy source from a file.
The file is assumed to contain good randomness, and will be mixed directly into the pool with every byte adding 8 bits of entropy.
The file will be put into non-blocking mode, so it may be a device file, such as /dev/random. /dev/urandom should not be used here if it can be avoided, since it will always provide data even if it isn't good. We will make as much pseudorandom data as we need internally if our caller asks for it.
If we hit end-of-file, we will stop reading from this source. Callers who require strong random data will get failure when our pool drains. The file will never be opened/read again once EOF is reached.
Definition at line 488 of file entropy.c.
References isc_entropysource::ent, ENTROPY_SOURCETYPE_FILE, ENTROPY_SOURCETYPE_USOCKET, isc__errno2result, ISC_FALSE, ISC_LINK_INIT, ISC_LIST_APPEND, isc_mem_get, ISC_R_NOMEMORY, ISC_R_SUCCESS, ISC_TRUE, isc_entropy::lock, LOCK, isc_entropysource::magic, make_nonblock(), isc_entropy::mctx, isc_entropy::nsources, REQUIRE, SOURCE_MAGIC, isc_entropysource::sources, isc_entropysource::total, isc_entropysource::type, UNLOCK, and VALID_ENTROPY.
Referenced by isc_entropy_usebestsource(), load_configuration(), and setup().