Return to chrdev.c CVS log

Up to [Early Linux] / linux / fs / minix

Annotation of linux/fs/minix/chrdev.c, revision 1.1.1.2

1.1       root        1: /*
1.1.1.2 ! root        2:  *  linux/fs/minix/chrdev.c
1.1       root        3:  *
                      4:  *  (C) 1991  Linus Torvalds
                      5:  */
                      6: 
                      7: #include <linux/sched.h>
                      8: #include <linux/minix_fs.h>
                      9: #include <linux/tty.h>
1.1.1.2 ! root       10: #include <linux/stat.h>
1.1       root       11: 
                     12: #include <errno.h>
                     13: #include <fcntl.h>
                     14: 
                     15: /*
                     16:  * Called every time a minix character special file is opened
                     17:  */
                     18: static int chrdev_open(struct inode * inode, struct file * filp)
                     19: {
                     20:        int i;
                     21: 
                     22:        i = MAJOR(inode->i_rdev);
                     23:        if (i < MAX_CHRDEV) {
                     24:                filp->f_op = chrdev_fops[i];
                     25:                if (filp->f_op && filp->f_op->open)
                     26:                        return filp->f_op->open(inode,filp);
                     27:        }
                     28:        return 0;
                     29: }
                     30: 
                     31: /*
                     32:  * Dummy default file-operations: the only thing this does
                     33:  * is contain the open that then fills in the correct operations
                     34:  * depending on the special file...
                     35:  */
                     36: static struct file_operations def_chr_fops = {
                     37:        NULL,           /* lseek */
                     38:        NULL,           /* read */
                     39:        NULL,           /* write */
                     40:        NULL,           /* readdir */
                     41:        NULL,           /* select */
                     42:        NULL,           /* ioctl */
                     43:        chrdev_open,    /* open */
                     44:        NULL,           /* release */
                     45: };
                     46: 
                     47: struct inode_operations minix_chrdev_inode_operations = {
                     48:        &def_chr_fops,          /* default file operations */
                     49:        NULL,                   /* create */
                     50:        NULL,                   /* lookup */
                     51:        NULL,                   /* link */
                     52:        NULL,                   /* unlink */
                     53:        NULL,                   /* symlink */
                     54:        NULL,                   /* mkdir */
                     55:        NULL,                   /* rmdir */
                     56:        NULL,                   /* mknod */
                     57:        NULL,                   /* rename */
                     58:        NULL,                   /* readlink */
                     59:        NULL,                   /* follow_link */
                     60:        minix_bmap,             /* bmap */
                     61:        minix_truncate          /* truncate */
                     62: };
                     63: 

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.