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add blocking mode, and add a flag to indicate the input is a device

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Michael Graff
2000-06-09 21:36:51 +00:00
parent 4979d89e04
commit 79fdce6aff
3 changed files with 112 additions and 28 deletions
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12
lib/isc/include/isc/entropy.h
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@@ -96,15 +96,15 @@ ISC_LANG_BEGINDECLS
* Estimate the amount of entropy contained in the sample pool.
* If this is not set, the source will be gathered and perodically
* mixed into the entropy pool, but no increment in contained entropy
* will be assumed.
* will be assumed. This flag only makes sense on sample sources.
*
* _POLLABLE
* The entropy source is pollable for more data. This is most useful
* for things like files and devices. It should not be used for
* tty/keyboard data, device timings, etc.
* _ISDEVICE
* The file named is really a device file, and blocking is possible.
* Otherwise, the file is assumed to be a finite length file, and
* any I/O error (including blocking) terminates the source.
*/
#define ISC_ENTROPYSOURCE_ESTIMATE 0x00000001U
#define ISC_ENTROPYSOURCE_POLLABLE 0x00000002U
#define ISC_ENTROPYSOURCE_ISDEVICE 0x00000002U
/***
*** Functions