Contributors: 7
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Linus Torvalds (pre-git) |
195 |
87.05% |
10 |
55.56% |
| Matthew Wilcox |
17 |
7.59% |
2 |
11.11% |
| Christoph Hellwig |
4 |
1.79% |
2 |
11.11% |
| Linus Torvalds |
4 |
1.79% |
1 |
5.56% |
| Art Haas |
2 |
0.89% |
1 |
5.56% |
| Al Viro |
1 |
0.45% |
1 |
5.56% |
| Greg Kroah-Hartman |
1 |
0.45% |
1 |
5.56% |
| Total |
224 |
|
18 |
|
// SPDX-License-Identifier: GPL-2.0
/*
* symlink.c
*
* Copyright (c) 1999 Al Smith
*
* Portions derived from work (c) 1995,1996 Christian Vogelgsang.
*/
#include <linux/string.h>
#include <linux/pagemap.h>
#include <linux/buffer_head.h>
#include "efs.h"
static int efs_symlink_read_folio(struct file *file, struct folio *folio)
{
char *link = folio_address(folio);
struct buffer_head *bh;
struct inode *inode = folio->mapping->host;
efs_block_t size = inode->i_size;
int err;
err = -ENAMETOOLONG;
if (size > 2 * EFS_BLOCKSIZE)
goto fail;
/* read first 512 bytes of link target */
err = -EIO;
bh = sb_bread(inode->i_sb, efs_bmap(inode, 0));
if (!bh)
goto fail;
memcpy(link, bh->b_data, (size > EFS_BLOCKSIZE) ? EFS_BLOCKSIZE : size);
brelse(bh);
if (size > EFS_BLOCKSIZE) {
bh = sb_bread(inode->i_sb, efs_bmap(inode, 1));
if (!bh)
goto fail;
memcpy(link + EFS_BLOCKSIZE, bh->b_data, size - EFS_BLOCKSIZE);
brelse(bh);
}
link[size] = '\0';
err = 0;
fail:
folio_end_read(folio, err == 0);
return err;
}
const struct address_space_operations efs_symlink_aops = {
.read_folio = efs_symlink_read_folio
};