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c00c310eac
In particular, remove the bit in the LICENCE file about contacting Red Hat for alternative arrangements. Their errant IS department broke that arrangement a long time ago -- the policy of collecting copyright assignments from contributors came to an end when the plug was pulled on the servers hosting the project, without notice or reason. We do still dual-license it for use with eCos, with the GPL+exception licence approved by the FSF as being GPL-compatible. It's just that nobody has the right to license it differently. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
/*
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* JFFS2 -- Journalling Flash File System, Version 2.
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*
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* Copyright © 2001-2007 Red Hat, Inc.
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*
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* Created by David Woodhouse <dwmw2@infradead.org>
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*
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* For licensing information, see the file 'LICENCE' in this directory.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/fs.h>
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#include <linux/namei.h>
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#include "nodelist.h"
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static void *jffs2_follow_link(struct dentry *dentry, struct nameidata *nd);
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const struct inode_operations jffs2_symlink_inode_operations =
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{
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.readlink = generic_readlink,
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.follow_link = jffs2_follow_link,
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.permission = jffs2_permission,
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.setattr = jffs2_setattr,
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.setxattr = jffs2_setxattr,
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.getxattr = jffs2_getxattr,
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.listxattr = jffs2_listxattr,
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.removexattr = jffs2_removexattr
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};
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static void *jffs2_follow_link(struct dentry *dentry, struct nameidata *nd)
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{
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struct jffs2_inode_info *f = JFFS2_INODE_INFO(dentry->d_inode);
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char *p = (char *)f->target;
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/*
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* We don't acquire the f->sem mutex here since the only data we
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* use is f->target.
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*
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* 1. If we are here the inode has already built and f->target has
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* to point to the target path.
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* 2. Nobody uses f->target (if the inode is symlink's inode). The
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* exception is inode freeing function which frees f->target. But
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* it can't be called while we are here and before VFS has
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* stopped using our f->target string which we provide by means of
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* nd_set_link() call.
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*/
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if (!p) {
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printk(KERN_ERR "jffs2_follow_link(): can't find symlink target\n");
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p = ERR_PTR(-EIO);
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}
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D1(printk(KERN_DEBUG "jffs2_follow_link(): target path is '%s'\n", (char *) f->target));
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nd_set_link(nd, p);
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/*
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* We will unlock the f->sem mutex but VFS will use the f->target string. This is safe
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* since the only way that may cause f->target to be changed is iput() operation.
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* But VFS will not use f->target after iput() has been called.
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*/
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return NULL;
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}
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