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Added proper select() support for R5 and Haiku.

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9141 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2004-10-01 00:29:49 +00:00
parent 8384cc5c92
commit 7f246a3068
1 changed files with 16 additions and 14 deletions
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30
src/add-ons/kernel/drivers/random/driver.c
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@ -4,12 +4,12 @@
*/
/* Made into a BeOS /dev/random and /dev/urandom by Daniel Berlin */
/* Adapted for OpenBeOS by David Reid, Axel Doerfler */
/* Adapted for Haiku by David Reid, Axel Doerfler */
#include <OS.h>
#include <Drivers.h>
#include <Errors.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
@ -22,14 +22,6 @@
# define TRACE(x) ;
#endif
#ifndef B_SELECT_READ
/* these are missing from KernelExport.h ... */
# define B_SELECT_READ 1
# define B_SELECT_WRITE 2
# define B_SELECT_EXCEPTION 3
extern void notify_select_event(selectsync * sync, uint32 ref);
#endif /* B_SELECT_READ */
int32 api_version = B_CUR_DRIVER_API_VERSION;
#define DRIVER_NAME "random"
@ -463,18 +455,28 @@ random_free(void *cookie)
return B_OK;
}
static status_t
random_select(void *cookie, uint8 event, uint32 ref, selectsync *sync)
{
TRACE((DRIVER_NAME ": select()\n"));
/* tell there is already data to read */
if (event == B_SELECT_READ)
if (event == B_SELECT_READ) {
/* tell there is already data to read */
#ifdef COMPILE_FOR_R5
notify_select_event(sync, ref);
else if (event == B_SELECT_WRITE)
return EINVAL; /* not writable */
#else
notify_select_event(sync, ref, event);
#endif
} else if (event == B_SELECT_WRITE) {
/* we're not writable */
return EINVAL;
}
return B_OK;
}
static status_t
random_deselect(void *cookie, uint8 event, selectsync *sync)
{