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sysv: ensure fast symlinks are NUL-terminated 

Ensure fast symlink targets are NUL-terminated, even if corrupted
on-disk.

Cc: Christoph Hellwig <hch@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Duane Griffin <duaneg@dghda.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
hifive-unleashed-5.1
Duane Griffin 2008-12-19 20:47:16 +00:00 committed by Al Viro
parent e83c1397ca
commit 21acaf8e8d
1 changed files with 5 additions and 1 deletions
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6
fs/sysv/inode.c
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@ -27,6 +27,7 @@
#include <linux/init.h>
#include <linux/buffer_head.h>
#include <linux/vfs.h>
#include <linux/namei.h>
#include <asm/byteorder.h>
#include "sysv.h"
@ -163,8 +164,11 @@ void sysv_set_inode(struct inode *inode, dev_t rdev)
if (inode->i_blocks) {
inode->i_op = &sysv_symlink_inode_operations;
inode->i_mapping->a_ops = &sysv_aops;
} else
} else {
inode->i_op = &sysv_fast_symlink_inode_operations;
nd_terminate_link(SYSV_I(inode)->i_data, inode->i_size,
sizeof(SYSV_I(inode)->i_data) - 1);
}
} else
init_special_inode(inode, inode->i_mode, rdev);
}