| /* |
| * linux/fs/ext/blkdev.c |
| * |
| * (C) 1992 Remy Card (card@masi.ibp.fr) |
| * |
| * from |
| * |
| * linux/fs/minix/blkdev.c |
| * |
| * (C) 1991 Linus Torvalds |
| */ |
| |
| #include <linux/sched.h> |
| #include <linux/ext_fs.h> |
| #include <linux/tty.h> |
| #include <linux/stat.h> |
| #include <linux/fcntl.h> |
| |
| #include <errno.h> |
| |
| /* |
| * Called every time an ext block special file is opened |
| */ |
| static int blkdev_open(struct inode * inode, struct file * filp) |
| { |
| int i; |
| |
| i = MAJOR(inode->i_rdev); |
| if (i < MAX_BLKDEV) { |
| filp->f_op = blkdev_fops[i]; |
| if (filp->f_op && filp->f_op->open) |
| return filp->f_op->open(inode,filp); |
| } |
| return 0; |
| } |
| |
| /* |
| * Dummy default file-operations: the only thing this does |
| * is contain the open that then fills in the correct operations |
| * depending on the special file... |
| */ |
| static struct file_operations def_blk_fops = { |
| NULL, /* lseek */ |
| NULL, /* read */ |
| NULL, /* write */ |
| NULL, /* readdir */ |
| NULL, /* select */ |
| NULL, /* ioctl */ |
| blkdev_open, /* open */ |
| NULL, /* release */ |
| }; |
| |
| struct inode_operations ext_blkdev_inode_operations = { |
| &def_blk_fops, /* default file operations */ |
| NULL, /* create */ |
| NULL, /* lookup */ |
| NULL, /* link */ |
| NULL, /* unlink */ |
| NULL, /* symlink */ |
| NULL, /* mkdir */ |
| NULL, /* rmdir */ |
| NULL, /* mknod */ |
| NULL, /* rename */ |
| NULL, /* readlink */ |
| NULL, /* follow_link */ |
| ext_bmap, /* bmap */ |
| ext_truncate /* truncate */ |
| }; |
