| Message ID | 1463480843-3860-2-git-send-email-david.vrabel@citrix.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 17/05/16 11:27, David Vrabel wrote: > simple_fill_super() will add symlinks if an entry has mode & S_IFLNK. > The target is provided in the new "link" field. Ping? > Signed-off-by: David Vrabel <david.vrabel@citrix.com> > --- > v2: > - simplified. > --- > fs/libfs.c | 15 +++++++++++++-- > include/linux/fs.h | 2 +- > 2 files changed, 14 insertions(+), 3 deletions(-) > > diff --git a/fs/libfs.c b/fs/libfs.c > index f3fa82c..5b3a391 100644 > --- a/fs/libfs.c > +++ b/fs/libfs.c > @@ -517,9 +517,20 @@ int simple_fill_super(struct super_block *s, unsigned long magic, > dput(dentry); > goto out; > } > - inode->i_mode = S_IFREG | files->mode; > + if (files->mode & S_IFLNK) { > + inode->i_mode = files->mode; > + inode->i_op = &simple_symlink_inode_operations; > + inode->i_link = kstrdup(files->link, GFP_KERNEL); > + if (!inode->i_link) { > + iput(inode); > + dput(dentry); > + goto out; > + } > + } else { > + inode->i_mode = S_IFREG | files->mode; > + inode->i_fop = files->ops; > + } > inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; > - inode->i_fop = files->ops; > inode->i_ino = i; > d_add(dentry, inode); > } > diff --git a/include/linux/fs.h b/include/linux/fs.h > index 70e61b5..8a09998 100644 > --- a/include/linux/fs.h > +++ b/include/linux/fs.h > @@ -2897,7 +2897,7 @@ extern const struct file_operations simple_dir_operations; > extern const struct inode_operations simple_dir_inode_operations; > extern void make_empty_dir_inode(struct inode *inode); > extern bool is_empty_dir_inode(struct inode *inode); > -struct tree_descr { char *name; const struct file_operations *ops; int mode; }; > +struct tree_descr { char *name; const struct file_operations *ops; int mode; char *link; }; > struct dentry *d_alloc_name(struct dentry *, const char *); > extern int simple_fill_super(struct super_block *, unsigned long, struct tree_descr *); > extern int simple_pin_fs(struct file_system_type *, struct vfsmount **mount, int *count); >
diff --git a/fs/libfs.c b/fs/libfs.c index f3fa82c..5b3a391 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -517,9 +517,20 @@ int simple_fill_super(struct super_block *s, unsigned long magic, dput(dentry); goto out; } - inode->i_mode = S_IFREG | files->mode; + if (files->mode & S_IFLNK) { + inode->i_mode = files->mode; + inode->i_op = &simple_symlink_inode_operations; + inode->i_link = kstrdup(files->link, GFP_KERNEL); + if (!inode->i_link) { + iput(inode); + dput(dentry); + goto out; + } + } else { + inode->i_mode = S_IFREG | files->mode; + inode->i_fop = files->ops; + } inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; - inode->i_fop = files->ops; inode->i_ino = i; d_add(dentry, inode); } diff --git a/include/linux/fs.h b/include/linux/fs.h index 70e61b5..8a09998 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2897,7 +2897,7 @@ extern const struct file_operations simple_dir_operations; extern const struct inode_operations simple_dir_inode_operations; extern void make_empty_dir_inode(struct inode *inode); extern bool is_empty_dir_inode(struct inode *inode); -struct tree_descr { char *name; const struct file_operations *ops; int mode; }; +struct tree_descr { char *name; const struct file_operations *ops; int mode; char *link; }; struct dentry *d_alloc_name(struct dentry *, const char *); extern int simple_fill_super(struct super_block *, unsigned long, struct tree_descr *); extern int simple_pin_fs(struct file_system_type *, struct vfsmount **mount, int *count);
simple_fill_super() will add symlinks if an entry has mode & S_IFLNK. The target is provided in the new "link" field. Signed-off-by: David Vrabel <david.vrabel@citrix.com> --- v2: - simplified. --- fs/libfs.c | 15 +++++++++++++-- include/linux/fs.h | 2 +- 2 files changed, 14 insertions(+), 3 deletions(-)