Messages in this thread Patch in this message |  | | Date | Sun, 09 Sep 2001 21:04:41 -0700 (PDT) | From | Chris Rankin <> | Subject | PATCH: Basic devfs support for raw IO |
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Hi, I have written a small patch to create a /dev/rawctl device node and a /dev/raw directory using devfs. Any feedback would be welcome - it certainly seems to work on my box.
Cheers, Chris
--- drivers/char/raw.c.orig Wed Jun 27 17:10:55 2001 +++ drivers/char/raw.c Sat Sep 1 14:54:43 2001 @@ -15,6 +15,7 @@ #include <linux/raw.h> #include <linux/capability.h> #include <linux/smp_lock.h> +#include <linux/devfs_fs_kernel.h> #include <asm/uaccess.h> #define dprintk(x...) @@ -53,7 +54,24 @@ static int __init raw_init(void) { int i; - register_chrdev(RAW_MAJOR, "raw", &raw_fops); + + if (devfs_register_chrdev(RAW_MAJOR, "raw", &raw_fops) != 0) { + printk(KERN_ERR "Unable to get major device %d for raw block devices", + RAW_MAJOR); + } else { + /* + * Make a directory for raw devices to go in ... + */ + devfs_mk_dir(NULL, "raw", NULL); + + /* + * Make the "control" device node for raw devices ... + */ + devfs_register(NULL, "rawctl", DEVFS_FL_DEFAULT, + RAW_MAJOR, 0, + S_IFCHR | S_IRUSR | S_IWUSR, + &raw_fops, NULL); + } for (i = 0; i < 256; i++) init_MUTEX(&raw_devices[i].mutex); - 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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