#include "power.h"
-extern char resume_file[];
-
#define SWSUSP_SIG "S1SUSPEND"
struct swsusp_header {
- char reserved[PAGE_SIZE - 20 - sizeof(sector_t)];
+ char reserved[PAGE_SIZE - 20 - sizeof(sector_t) - sizeof(int)];
sector_t image;
+ unsigned int flags; /* Flags to pass to the "boot" kernel */
char orig_sig[10];
char sig[10];
} __attribute__((packed));
* Saving part
*/
-static int mark_swapfiles(sector_t start)
+static int mark_swapfiles(sector_t start, unsigned int flags)
{
int error;
memcpy(swsusp_header->orig_sig,swsusp_header->sig, 10);
memcpy(swsusp_header->sig,SWSUSP_SIG, 10);
swsusp_header->image = start;
+ swsusp_header->flags = flags;
error = bio_write_page(swsusp_resume_block,
swsusp_header, NULL);
} else {
/**
* swsusp_write - Write entire image and metadata.
+ * @flags: flags to pass to the "boot" kernel in the image header
*
* It is important _NOT_ to umount filesystems at this point. We want
* them synced (in case something goes wrong) but we DO not want to mark
* correctly, we'll mark system clean, anyway.)
*/
-int swsusp_write(void)
+int swsusp_write(unsigned int flags)
{
struct swap_map_handle handle;
struct snapshot_handle snapshot;
if (!error) {
flush_swap_writer(&handle);
printk("S");
- error = mark_swapfiles(start);
+ error = mark_swapfiles(start, flags);
printk("|\n");
}
}
return error;
}
-int swsusp_read(void)
+/**
+ * swsusp_read - read the hibernation image.
+ * @flags_p: flags passed by the "frozen" kernel in the image header should
+ * be written into this memeory location
+ */
+
+int swsusp_read(unsigned int *flags_p)
{
int error;
struct swap_map_handle handle;
struct snapshot_handle snapshot;
struct swsusp_info *header;
+ *flags_p = swsusp_header->flags;
if (IS_ERR(resume_bdev)) {
pr_debug("swsusp: block device not initialised\n");
return PTR_ERR(resume_bdev);