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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [fs/] [autofs/] [dir.c] - Blame information for rev 1765

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/* -*- linux-c -*- --------------------------------------------------------- *
 *
 * linux/fs/autofs/dir.c
 *
 *  Copyright 1997 Transmeta Corporation -- All Rights Reserved
 *
 * This file is part of the Linux kernel and is made available under
 * the terms of the GNU General Public License, version 2, or at your
 * option, any later version, incorporated herein by reference.
 *
 * ------------------------------------------------------------------------- */
 
#include "autofs_i.h"
 
static int autofs_dir_readdir(struct inode *inode, struct file *filp,
                               void *dirent, filldir_t filldir)
{
        if (!inode || !S_ISDIR(inode->i_mode))
                return -ENOTDIR;
 
        switch((unsigned long) filp->f_pos)
        {
        case 0:
                if (filldir(dirent, ".", 1, 0, inode->i_ino) < 0)
                        return 0;
                filp->f_pos++;
                /* fall through */
        case 1:
                if (filldir(dirent, "..", 2, 1, AUTOFS_ROOT_INO) < 0)
                        return 0;
                filp->f_pos++;
                /* fall through */
        }
        return 1;
}
 
static int autofs_dir_lookup(struct inode *dir, const char *name, int len,
                              struct inode **result)
{
        *result = dir;
        if (!len)
                return 0;
        if (name[0] == '.') {
                if (len == 1)
                        return 0;
                if (name[1] == '.' && len == 2) {
                        /* Return the root directory */
                        *result = iget(dir->i_sb,AUTOFS_ROOT_INO);
                        iput(dir);
                        return 0;
                }
        }
        *result = NULL;
        iput(dir);
        return -ENOENT;         /* No other entries */
}
 
static struct file_operations autofs_dir_operations = {
        NULL,                   /* lseek */
        NULL,                   /* read */
        NULL,                   /* write */
        autofs_dir_readdir,     /* readdir */
        NULL,                   /* select */
        NULL,                   /* ioctl */
        NULL,                   /* mmap */
        NULL,                   /* open */
        NULL,                   /* release */
        NULL                    /* fsync */
};
 
struct inode_operations autofs_dir_inode_operations = {
        &autofs_dir_operations, /* file operations */
        NULL,                   /* create */
        autofs_dir_lookup,      /* lookup */
        NULL,                   /* link */
        NULL,                   /* unlink */
        NULL,                   /* symlink */
        NULL,                   /* mkdir */
        NULL,                   /* rmdir */
        NULL,                   /* mknod */
        NULL,                   /* rename */
        NULL,                   /* readlink */
        NULL,                   /* follow_link */
        NULL,                   /* read_page */
        NULL,                   /* writepage */
        NULL,                   /* bmap */
        NULL,                   /* truncate */
        NULL                    /* permission */
};
 

Line No.	Rev	Author	Line
1	1628	jcastillo	`/* -- linux-c -- --------------------------------------------------------- *`
2			`*`
3			`* linux/fs/autofs/dir.c`
4			`*`
5			`* Copyright 1997 Transmeta Corporation -- All Rights Reserved`
6			`*`
7			`* This file is part of the Linux kernel and is made available under`
8			`* the terms of the GNU General Public License, version 2, or at your`
9			`* option, any later version, incorporated herein by reference.`
10			`*`
11			`* ------------------------------------------------------------------------- */`
12
13			`#include "autofs_i.h"`
14
15			`static int autofs_dir_readdir(struct inode inode, struct file filp,`
16			`void *dirent, filldir_t filldir)`
17			`{`
18			`if (!inode \|\| !S_ISDIR(inode->i_mode))`
19			`return -ENOTDIR;`
20
21			`switch((unsigned long) filp->f_pos)`
22			`{`
23			`case 0:`
24			`if (filldir(dirent, ".", 1, 0, inode->i_ino) < 0)`
25			`return 0;`
26			`filp->f_pos++;`
27			`/* fall through */`
28			`case 1:`
29			`if (filldir(dirent, "..", 2, 1, AUTOFS_ROOT_INO) < 0)`
30			`return 0;`
31			`filp->f_pos++;`
32			`/* fall through */`
33			`}`
34			`return 1;`
35			`}`
36
37			`static int autofs_dir_lookup(struct inode dir, const char name, int len,`
38			`struct inode **result)`
39			`{`
40			`*result = dir;`
41			`if (!len)`
42			`return 0;`
43			`if (name[0] == '.') {`
44			`if (len == 1)`
45			`return 0;`
46			`if (name[1] == '.' && len == 2) {`
47			`/* Return the root directory */`
48			`*result = iget(dir->i_sb,AUTOFS_ROOT_INO);`
49			`iput(dir);`
50			`return 0;`
51			`}`
52			`}`
53			`*result = NULL;`
54			`iput(dir);`
55			`return -ENOENT; /* No other entries */`
56			`}`
57
58			`static struct file_operations autofs_dir_operations = {`
59			`NULL, /* lseek */`
60			`NULL, /* read */`
61			`NULL, /* write */`
62			`autofs_dir_readdir, /* readdir */`
63			`NULL, /* select */`
64			`NULL, /* ioctl */`
65			`NULL, /* mmap */`
66			`NULL, /* open */`
67			`NULL, /* release */`
68			`NULL /* fsync */`
69			`};`
70
71			`struct inode_operations autofs_dir_inode_operations = {`
72			`&autofs_dir_operations, /* file operations */`
73			`NULL, /* create */`
74			`autofs_dir_lookup, /* lookup */`
75			`NULL, /* link */`
76			`NULL, /* unlink */`
77			`NULL, /* symlink */`
78			`NULL, /* mkdir */`
79			`NULL, /* rmdir */`
80			`NULL, /* mknod */`
81			`NULL, /* rename */`
82			`NULL, /* readlink */`
83			`NULL, /* follow_link */`
84			`NULL, /* read_page */`
85			`NULL, /* writepage */`
86			`NULL, /* bmap */`
87			`NULL, /* truncate */`
88			`NULL /* permission */`
89			`};`
90

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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [fs/] [autofs/] [dir.c] - Blame information for rev 1765