#! /bin/sh /usr/share/dpatch/dpatch-run

# 67_init_hddown.dpatch by Sebastian Reichelt

#

# Make sure SATA disks are powered down as well as IDE disks.  This

# patch could use some more work to make it more dynamic when

# detecting SATA/SCSI disks.  Closes: #348172

@DPATCH@

--- sysvinit-2.86.ds1/src/hddown.c	2004-06-09 14:47:45.000000000 +0200

+++ sysvinit-2.86.ds1-new/src/hddown.c	2006-01-16 18:05:48.000000000 +0100

@@ -25,18 +25,17 @@

 /*

  *	Find all IDE disks through /proc.

  */

-static int find_idedisks(char **dev, int maxdev)

+static int find_idedisks(const char **dev, int maxdev, int *count)

 {

 	DIR *dd;

 	FILE *fp;

 	struct dirent *d;

 	char buf[256];

-	int i = 0;

 	if ((dd = opendir(PROC_IDE)) == NULL)

 		return -1;

-	while ((d = readdir(dd)) != NULL) {

+	while (*count < maxdev && (d = readdir(dd)) != NULL) {

 		if (strncmp(d->d_name, "hd", 2) != 0)

 			continue;

 		buf[0] = 0;

@@ -50,21 +49,58 @@

 		}

 		fclose(fp);

 		snprintf(buf, sizeof(buf), DEV_BASE "/%s", d->d_name);

-		dev[i++] = strdup(buf);

-		if (i >= maxdev)

-			break;

+		dev[(*count)++] = strdup(buf);

 	}

 	closedir(dd);

-	if (i < maxdev) dev[i] = NULL;

 	return 0;

 }

 /*

- *	Put an IDE disk in standby mode.

+ *	Find all SCSI/SATA disks.

+ */

+static int find_scsidisks(const char **dev, int maxdev, int *count)

+{

+	if (*count < maxdev) dev[(*count)++] = DEV_BASE "/sda";

+	if (*count < maxdev) dev[(*count)++] = DEV_BASE "/sdb";

+	if (*count < maxdev) dev[(*count)++] = DEV_BASE "/sdc";

+	if (*count < maxdev) dev[(*count)++] = DEV_BASE "/sdd";

+	if (*count < maxdev) dev[(*count)++] = DEV_BASE "/sde";

+	if (*count < maxdev) dev[(*count)++] = DEV_BASE "/sdf";

+	if (*count < maxdev) dev[(*count)++] = DEV_BASE "/sdg";

+	if (*count < maxdev) dev[(*count)++] = DEV_BASE "/sdh";

+

+	return 0;

+}

+

+/*

+ *	Open the device node of a disk.

+ */

+static int open_disk(const char *device)

+{

+	return open(device, O_RDWR);

+}

+

+/*

+ *	Open device nodes of all disks, and store the file descriptors in fds.

+ *	This has to be done in advance because accessing the device nodes

+ *	might cause a disk to spin back up.

+ */

+static int open_disks(const char **disks, int *fds, int count)

+{

+	int i;

+

+	for (i = 0; i < count; i++)

+		fds[i] = open_disk(disks[i]);

+

+	return 0;

+}

+

+/*

+ *	Put an IDE/SCSI/SATA disk in standby mode.

  *	Code stolen from hdparm.c

  */

-static int do_standby_idedisk(char *device)

+static int do_standby_disk(int fd)

 {

 #ifndef WIN_STANDBYNOW1

 #define WIN_STANDBYNOW1 0xE0

@@ -74,9 +110,8 @@

 #endif

 	unsigned char args1[4] = {WIN_STANDBYNOW1,0,0,0};

 	unsigned char args2[4] = {WIN_STANDBYNOW2,0,0,0};

-	int fd;

-	if ((fd = open(device, O_RDWR)) < 0)

+	if (fd < 0)

 		return -1;

 	if (ioctl(fd, HDIO_DRIVE_CMD, &args1) &&

@@ -87,22 +122,37 @@

 }

 /*

- *	First find all IDE disks, then put them in standby mode.

+ *	Put all specified disks in standby mode.

+ */

+static int do_standby_disks(const int *fds, int count)

+{

+	int i;

+

+	for (i = 0; i < count; i++)

+		do_standby_disk(fds[i]);

+

+	return 0;

+}

+

+/*

+ *	First find all IDE/SCSI/SATA disks, then put them in standby mode.

  *	This has the side-effect of flushing the writecache,

  *	which is exactly what we want on poweroff.

  */

 int hddown(void)

 {

-	char *disks[MAX_DISKS+1];

-	int i;

+	const char *disks[MAX_DISKS];

+	int fds[MAX_DISKS];

+	int count = 0;

+	int result1, result2;

-	if (find_idedisks(disks, MAX_DISKS) < 0)

-		return -1;

+	result1 = find_idedisks(disks, MAX_DISKS, &count);

+	result2 = find_scsidisks(disks, MAX_DISKS, &count);

-	for (i = 0; disks[i] && i < MAX_DISKS; i++)

-		do_standby_idedisk(disks[i]);

+	open_disks(disks, fds, count);

+	do_standby_disks(fds, count);

-	return 0;

+	return (result1 ? result1 : result2);

 }

 #else /* __linux__ */