Documenation/laptops: rename and update hpfall.c (3a57cc5f) · Commits · 戴 / test

Documentation/laptops/00-INDEX

+2 −2

Original line number	Diff line number	Diff line
		@@ -8,8 +8,8 @@ disk-shock-protection.txt
		- information on hard disk shock protection.
		dslm.c
		- Simple Disk Sleep Monitor program
		hpfall.c
		- (HP) laptop accelerometer program for disk protection.
		freefall.c
		- (HP/DELL) laptop accelerometer program for disk protection.
		laptop-mode.txt
		- how to conserve battery power using laptop-mode.
		sony-laptop.txt

Documentation/laptops/hpfall.c→Documentation/laptops/freefall.c

+45 −14

Original line number	Diff line number	Diff line
		/* Disk protection for HP machines.
		/* Disk protection for HP/DELL machines.
		*
		* Copyright 2008 Eric Piel
		* Copyright 2009 Pavel Machek <pavel@ucw.cz>
		* Copyright 2012 Sonal Santan
		* Copyright 2014 Pali Rohár <pali.rohar@gmail.com>
		*
		* GPLv2.
		*/
		@@ -18,24 +20,31 @@
		#include <signal.h>
		#include <sys/mman.h>
		#include <sched.h>
		#include <syslog.h>

		char unload_heads_path[64];
		static int noled;
		static char unload_heads_path[64];
		static char device_path[32];
		static const char app_name[] = "FREE FALL";

		int set_unload_heads_path(char *device)
		static int set_unload_heads_path(char *device)
		{
		char devname[64];

		if (strlen(device) <= 5 \|\| strncmp(device, "/dev/", 5) != 0)
		return -EINVAL;
		strncpy(devname, device + 5, sizeof(devname));
		strncpy(devname, device + 5, sizeof(devname) - 1);
		strncpy(device_path, device, sizeof(device_path) - 1);

		snprintf(unload_heads_path, sizeof(unload_heads_path) - 1,
		"/sys/block/%s/device/unload_heads", devname);
		return 0;
		}
		int valid_disk(void)

		static int valid_disk(void)
		{
		int fd = open(unload_heads_path, O_RDONLY);

		if (fd < 0) {
		perror(unload_heads_path);
		return 0;
		@@ -45,43 +54,54 @@ int valid_disk(void)
		return 1;
		}

		void write_int(char *path, int i)
		static void write_int(char *path, int i)
		{
		char buf[1024];
		int fd = open(path, O_RDWR);

		if (fd < 0) {
		perror("open");
		exit(1);
		}

		sprintf(buf, "%d", i);

		if (write(fd, buf, strlen(buf)) != strlen(buf)) {
		perror("write");
		exit(1);
		}

		close(fd);
		}

		void set_led(int on)
		static void set_led(int on)
		{
		if (noled)
		return;
		write_int("/sys/class/leds/hp::hddprotect/brightness", on);
		}

		void protect(int seconds)
		static void protect(int seconds)
		{
		const char *str = (seconds == 0) ? "Unparked" : "Parked";

		write_int(unload_heads_path, seconds*1000);
		syslog(LOG_INFO, "%s %s disk head\n", str, device_path);
		}

		int on_ac(void)
		static int on_ac(void)
		{
		// /sys/class/power_supply/AC0/online
		/* /sys/class/power_supply/AC0/online */
		return 1;
		}

		int lid_open(void)
		static int lid_open(void)
		{
		// /proc/acpi/button/lid/LID/state
		/* /proc/acpi/button/lid/LID/state */
		return 1;
		}

		void ignore_me(void)
		static void ignore_me(int signum)
		{
		protect(0);
		set_led(0);
		@@ -90,6 +110,7 @@ void ignore_me(void)
		int main(int argc, char **argv)
		{
		int fd, ret;
		struct stat st;
		struct sched_param param;

		if (argc == 1)
		@@ -111,7 +132,16 @@ int main(int argc, char **argv)
		return EXIT_FAILURE;
		}

		daemon(0, 0);
		if (stat("/sys/class/leds/hp::hddprotect/brightness", &st))
		noled = 1;

		if (daemon(0, 0) != 0) {
		perror("daemon");
		return EXIT_FAILURE;
		}

		openlog(app_name, LOG_CONS \| LOG_PID \| LOG_NDELAY, LOG_LOCAL1);

		param.sched_priority = sched_get_priority_max(SCHED_FIFO);
		sched_setscheduler(0, SCHED_FIFO, &param);
		mlockall(MCL_CURRENT\|MCL_FUTURE);
		@@ -141,6 +171,7 @@ int main(int argc, char **argv)
		alarm(20);
		}

		closelog();
		close(fd);
		return EXIT_SUCCESS;
		}

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