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[/] [or1k/] [trunk/] [uclinux/] [uClinux-2.0.x/] [fs/] [bad_inode.c] - Blame information for rev 1765

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/*
 *  linux/fs/bad_inode.c
 *
 *  Copyright (C) 1997, Stephen Tweedie
 *
 *  Provide stub functions for unreadable inodes
 */
 
#include <linux/fs.h>
#include <linux/stat.h>
#include <linux/sched.h>
 
static int return_EIO(void)
{
        return -EIO;
}
 
#define EIO_ERROR ((void *) (return_EIO))
 
static struct file_operations bad_file_ops =
{
        EIO_ERROR,              /* lseek */
        EIO_ERROR,              /* read */
        EIO_ERROR,              /* write */
        EIO_ERROR,              /* readdir */
        EIO_ERROR,              /* select */
        EIO_ERROR,              /* ioctl */
        EIO_ERROR,              /* mmap */
        EIO_ERROR,              /* open */
        EIO_ERROR,              /* release */
        EIO_ERROR,              /* fsync */
        EIO_ERROR,              /* fasync */
        EIO_ERROR,              /* check_media_change */
        EIO_ERROR               /* revalidate */
#ifdef MAGIC_ROM_PTR
        ,EIO_ERROR              /* romptr */
#endif /* MAGIC_ROM_PTR */
};
 
static struct inode_operations bad_inode_ops =
{
        &bad_file_ops,          /* default file operations */
        EIO_ERROR,              /* create */
        EIO_ERROR,              /* lookup */
        EIO_ERROR,              /* link */
        EIO_ERROR,              /* unlink */
        EIO_ERROR,              /* symlink */
        EIO_ERROR,              /* mkdir */
        EIO_ERROR,              /* rmdir */
        EIO_ERROR,              /* mknod */
        EIO_ERROR,              /* rename */
        EIO_ERROR,              /* readlink */
        EIO_ERROR,              /* follow_link */
        EIO_ERROR,              /* readpage */
        EIO_ERROR,              /* writepage */
        EIO_ERROR,              /* bmap */
        EIO_ERROR,              /* truncate */
        EIO_ERROR,              /* permission */
        EIO_ERROR               /* smap */
};
 
 
/*
 * When a filesystem is unable to read an inode due to an I/O error in
 * its read_inode() function, it can call make_bad_inode() to return a
 * set of stubs which will return EIO errors as required.
 *
 * We only need to do limited initialisation: all other fields are
 * preinitialised to zero automatically.
 */
void make_bad_inode(struct inode * inode)
{
        inode->i_mode = S_IFREG;
        inode->i_flags = S_BAD_INODE;
        inode->i_atime = CURRENT_TIME;
        inode->i_mtime = CURRENT_TIME;
        inode->i_ctime = CURRENT_TIME;
        inode->i_op = &bad_inode_ops;
}
 

Line No.	Rev	Author	Line
1	199	simons	`/*`
2			`* linux/fs/bad_inode.c`
3			`*`
4			`* Copyright (C) 1997, Stephen Tweedie`
5			`*`
6			`* Provide stub functions for unreadable inodes`
7			`*/`
8
9			`#include <linux/fs.h>`
10			`#include <linux/stat.h>`
11			`#include <linux/sched.h>`
12
13			`static int return_EIO(void)`
14			`{`
15			`return -EIO;`
16			`}`
17
18			`#define EIO_ERROR ((void *) (return_EIO))`
19
20			`static struct file_operations bad_file_ops =`
21			`{`
22			`EIO_ERROR, /* lseek */`
23			`EIO_ERROR, /* read */`
24			`EIO_ERROR, /* write */`
25			`EIO_ERROR, /* readdir */`
26			`EIO_ERROR, /* select */`
27			`EIO_ERROR, /* ioctl */`
28			`EIO_ERROR, /* mmap */`
29			`EIO_ERROR, /* open */`
30			`EIO_ERROR, /* release */`
31			`EIO_ERROR, /* fsync */`
32			`EIO_ERROR, /* fasync */`
33			`EIO_ERROR, /* check_media_change */`
34			`EIO_ERROR /* revalidate */`
35			`#ifdef MAGIC_ROM_PTR`
36			`,EIO_ERROR /* romptr */`
37			`#endif /* MAGIC_ROM_PTR */`
38			`};`
39
40			`static struct inode_operations bad_inode_ops =`
41			`{`
42			`&bad_file_ops, /* default file operations */`
43			`EIO_ERROR, /* create */`
44			`EIO_ERROR, /* lookup */`
45			`EIO_ERROR, /* link */`
46			`EIO_ERROR, /* unlink */`
47			`EIO_ERROR, /* symlink */`
48			`EIO_ERROR, /* mkdir */`
49			`EIO_ERROR, /* rmdir */`
50			`EIO_ERROR, /* mknod */`
51			`EIO_ERROR, /* rename */`
52			`EIO_ERROR, /* readlink */`
53			`EIO_ERROR, /* follow_link */`
54			`EIO_ERROR, /* readpage */`
55			`EIO_ERROR, /* writepage */`
56			`EIO_ERROR, /* bmap */`
57			`EIO_ERROR, /* truncate */`
58			`EIO_ERROR, /* permission */`
59			`EIO_ERROR /* smap */`
60			`};`
61
62
63			`/*`
64			`* When a filesystem is unable to read an inode due to an I/O error in`
65			`* its read_inode() function, it can call make_bad_inode() to return a`
66			`* set of stubs which will return EIO errors as required.`
67			`*`
68			`* We only need to do limited initialisation: all other fields are`
69			`* preinitialised to zero automatically.`
70			`*/`
71			`void make_bad_inode(struct inode * inode)`
72			`{`
73			`inode->i_mode = S_IFREG;`
74			`inode->i_flags = S_BAD_INODE;`
75			`inode->i_atime = CURRENT_TIME;`
76			`inode->i_mtime = CURRENT_TIME;`
77			`inode->i_ctime = CURRENT_TIME;`
78			`inode->i_op = &bad_inode_ops;`
79			`}`
80

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[/] [or1k/] [trunk/] [uclinux/] [uClinux-2.0.x/] [fs/] [bad_inode.c] - Blame information for rev 1765