Pinkbyte/yasnd
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Split lpt functions into separate files

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This commit is contained in:
Sergey Popov 2012-03-22 17:14:50 +04:00
parent bc7929b67b
commit 447d6e59e0
4 changed files with 92 additions and 73 deletions
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2
daemon/Makefile.am
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@ -3,7 +3,7 @@ include_HEADERS = $(top_srcdir)/yasnd.h
yasnd_LDADD = ${libconfuse_LIBS}
yasnd_LDADD += $(top_srcdir)/lib/libyasnd.la
sbin_PROGRAMS = yasnd
yasnd_SOURCES = yasnd.c yasnd-ipc.c
yasnd_SOURCES = yasnd.c yasnd-ipc.c yasnd-lpt.c
yasnd_CPPFLAGS = -I$(top_srcdir)
distclean-local:

76
daemon/yasnd-lpt.c Normal file
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@ -0,0 +1,76 @@
#include <sys/io.h>
#include <stdbool.h>
#include <unistd.h>
bool lpt_enable=false; // control usage of LPT port to reset target devices
int lpt_port=0x378; // LPT port in hex(0x378 is usually LPT1)
/*
Function, that turn off all LPT port pins.
This is needed to unlock LPT control circuit, when
management computer is just booted
*/
void lpt_init()
{
if (lpt_enable)
{
if (ioperm (lpt_port, 3, 1))
{
log_event("Error: Unlocking the circuit fails due to LPT port access error");
// disable LPT port usage
lpt_enable=false;
return;
}
// Unlock circuit
outb (0, lpt_port);
}
}
/*
Function, that turn on first LPT port pin and turn off others.
This is needed to lock LPT control circuit, when
management computer is rebooted
*/
void lpt_lock_cond(bool ignore_options)
{
if (lpt_enable || ignore_options)
{
if (ioperm (lpt_port, 3, 1))
{
log_event("Error: Locking the circuit fails due to LPT port access error");
// disable LPT port usage
lpt_enable=false;
return;
}
// Lock circuit
outb (1, lpt_port);
}
}
/*
Function, that turn on only one LPT port pin, defined by it argument, wait a second,
and turn off all pins. That is enough to reset specified host.
*/
void reset_pin(int pin_num)
{
if (lpt_enable)
{
if (pin_num==0)
return; // there is no LPT control for target host
if (pin_num<2 || pin_num>8)
{
log_event("Error: incorrent LPT pin number");
return;
}
int pins = 1<<(pin_num-1);
if (ioperm (lpt_port, 3, 1))
{
log_event("Error: LPT port access error");
return;
}
// Reset host
outb (pins, lpt_port);
sleep(1);
outb (0, lpt_port);
}
}

14
daemon/yasnd-lpt.h Normal file
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@ -0,0 +1,14 @@
#ifndef YASND_LPT_H
#define YASND_LPT_H
// External variables
extern bool lpt_enable; // control usage of LPT port to reset target devices
extern int lpt_port; // LPT port in hex(0x378 is usually LPT1)
// External functions
extern void lpt_init();
extern void lpt_lock_cond(bool ignore_options);
extern void lpt_lock();
extern void reset_pin(int pin_num);
#endif

73
daemon/yasnd.c
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@ -1,5 +1,4 @@
#include <sys/stat.h>
#include <sys/io.h>
#include <fcntl.h>
#include <errno.h>
#include <syslog.h>
@ -7,6 +6,7 @@
#include <confuse.h>
#include "yasnd.h"
#include "yasnd-lpt.h"
cfg_t *cfg; // pointer to configuration structure
char pidfile[]="/var/run/yasnd.pid"; // pidfile path
@ -18,8 +18,6 @@ char* phone_device=NULL; // phone device for gammu, for example: "/dev/ttyACM0"
char* phone_model=NULL; // gammu phone model, for example: "at"
char* phone_connection=NULL; // gammu phone connection type, for example: "at"
char* recipient_number=NULL; // recipient of sms alerts
bool lpt_enable=false; // control usage of LPT port to reset target devices
int lpt_port=0x378; // LPT port in hex(0x378 is usually LPT1)
bool loop_locked=false; // flag for locking main loop while config re-reading
int failures_first=0; // count of failures while hosts checking, that triggers SMS sending
int failures_second=0; // count of failures while hosts checking, that triggers host's reset
@ -48,47 +46,6 @@ void* allocate_memory(int bytes)
return result;
}
/*
Function, that turn off all LPT port pins.
This is needed to unlock LPT control circuit, when
management computer is just booted
*/
void lpt_init()
{
if (lpt_enable)
{
if (ioperm (lpt_port, 3, 1))
{
log_event("Error: Unlocking the circuit fails due to LPT port access error");
// disable LPT port usage
lpt_enable=false;
return;
}
// Unlock circuit
outb (0, lpt_port);
}
}
/*
Function, that turn on first LPT port pin and turn off others.
This is needed to lock LPT control circuit, when
management computer is rebooted
*/
void lpt_lock_cond(bool ignore_options)
{
if (lpt_enable || ignore_options)
{
if (ioperm (lpt_port, 3, 1))
{
log_event("Error: Locking the circuit fails due to LPT port access error");
// disable LPT port usage
lpt_enable=false;
return;
}
// Lock circuit
outb (1, lpt_port);
}
}
// Previous function, but without ignoring lpt_enable option
void lpt_lock()
@ -236,34 +193,6 @@ void check_host(int num,host_decl* host)
host->helper_pid=pid;
}
/*
Function, that turn on only one LPT port pin, defined by it argument, wait a second,
and turn off all pins. That is enough to reset specified host.
*/
void reset_pin(int pin_num)
{
if (lpt_enable)
{
if (pin_num==0)
return; // there is no LPT control for target host
if (pin_num<2 || pin_num>8)
{
log_event("Error: incorrent LPT pin number");
return;
}
int pins = 1<<(pin_num-1);
if (ioperm (lpt_port, 3, 1))
{
log_event("Error: LPT port access error");
return;
}
// Reset host
outb (pins, lpt_port);
sleep(1);
outb (0, lpt_port);
}
}
int loop_function()
{
// set default signal handlers