Messages in this thread Patch in this message | | | From | Nigel Cunningham <> | Subject | [Suspend2][ 17/35] [Suspend2] Filewriter initrd image support. | Date | Tue, 27 Jun 2006 08:40:01 +1000 |
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First cut support for making the initrd itself the image.
Signed-off-by: Nigel Cunningham <nigel@suspend2.net>
kernel/power/suspend_file.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 files changed, 38 insertions(+), 0 deletions(-)
diff --git a/kernel/power/suspend_file.c b/kernel/power/suspend_file.c index 46527f1..6f298fc 100644 --- a/kernel/power/suspend_file.c +++ b/kernel/power/suspend_file.c @@ -544,3 +544,41 @@ static int filewriter_write_header_clean return 0; } +/* HEADER READING */ + +#ifdef CONFIG_DEVFS_FS +int create_dev(char *name, dev_t dev, char *devfs_name); +#else +static int create_dev(char *name, dev_t dev, char *devfs_name) +{ + sys_unlink(name); + return sys_mknod(name, S_IFBLK|0600, new_encode_dev(dev)); +} +#endif + +static int rd_init(void) +{ + suspend_writer_buffer_posn = 0; + + create_dev("/dev/root", ROOT_DEV, root_device_name); + create_dev("/dev/ram", MKDEV(RAMDISK_MAJOR, 0), NULL); + + suspend_read_fd = sys_open("/dev/root", O_RDONLY, 0); + if (suspend_read_fd < 0) + goto out; + + sys_read(suspend_read_fd, suspend_writer_buffer, BLOCK_SIZE); + + memcpy(&suspend_writer_posn_save, + suspend_writer_buffer + suspend_writer_buffer_posn, + sizeof(suspend_writer_posn_save)); + + suspend_writer_buffer_posn += sizeof(suspend_writer_posn_save); + + return 0; +out: + sys_unlink("/dev/ram"); + sys_unlink("/dev/root"); + return -EIO; +} + -- Nigel Cunningham nigel at suspend2 dot net - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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