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Commit 29433a29 authored by Miklos Szeredi's avatar Miklos Szeredi
Browse files

fuse: get rid of fc->flags 



Only two flags: "default_permissions" and "allow_other".  All other flags
are handled via bitfields.  So convert these two as well.  They don't
change during the lifetime of the filesystem, so this is quite safe.

Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
parent bcb6f6d2

fs/fuse/dir.c

+4 −4
Original line number Diff line number Diff line
@@ -1028,7 +1028,7 @@ int fuse_allow_current_process(struct fuse_conn *fc) 
{

	const struct cred *cred;



	if (fc->flags & FUSE_ALLOW_OTHER)

	if (fc->allow_other)

		return 1;



	cred = current_cred();
@@ -1104,7 +1104,7 @@ static int fuse_permission(struct inode *inode, int mask) 
	/*

	 * If attributes are needed, refresh them before proceeding

	 */

	if ((fc->flags & FUSE_DEFAULT_PERMISSIONS) ||

	if (fc->default_permissions ||

	    ((mask & MAY_EXEC) && S_ISREG(inode->i_mode))) {

		struct fuse_inode *fi = get_fuse_inode(inode);
@@ -1117,7 +1117,7 @@ static int fuse_permission(struct inode *inode, int mask) 
		}

	}



	if (fc->flags & FUSE_DEFAULT_PERMISSIONS) {

	if (fc->default_permissions) {

		err = generic_permission(inode, mask);



		/* If permission is denied, try to refresh file
@@ -1618,7 +1618,7 @@ int fuse_do_setattr(struct inode *inode, struct iattr *attr, 
	int err;

	bool trust_local_cmtime = is_wb && S_ISREG(inode->i_mode);



	if (!(fc->flags & FUSE_DEFAULT_PERMISSIONS))

	if (!fc->default_permissions)

		attr->ia_valid |= ATTR_FORCE;



	err = inode_change_ok(inode, attr);

fs/fuse/fuse_i.h

+6 −12
Original line number Diff line number Diff line
@@ -37,15 +37,6 @@ 
/** Number of dentries for each connection in the control filesystem */

#define FUSE_CTL_NUM_DENTRIES 5



/** If the FUSE_DEFAULT_PERMISSIONS flag is given, the filesystem

    module will check permissions based on the file mode.  Otherwise no

    permission checking is done in the kernel */

#define FUSE_DEFAULT_PERMISSIONS (1 << 0)



/** If the FUSE_ALLOW_OTHER flag is given, then not only the user

    doing the mount will be allowed to access the filesystem */

#define FUSE_ALLOW_OTHER         (1 << 1)



/** Number of page pointers embedded in fuse_req */

#define FUSE_REQ_INLINE_PAGES 1
@@ -470,9 +461,6 @@ struct fuse_conn { 
	/** The group id for this mount */

	kgid_t group_id;



	/** The fuse mount flags for this mount */

	unsigned flags;



	/** Maximum read size */

	unsigned max_read;
@@ -631,6 +619,12 @@ struct fuse_conn { 
	/** Does the filesystem support posix acls? */

	unsigned posix_acl:1;



	/** Check permissions based on the file mode or not? */

	unsigned default_permissions:1;



	/** Allow other than the mounter user to access the filesystem ? */

	unsigned allow_other:1;



	/** The number of requests waiting for completion */

	atomic_t num_waiting;

fs/fuse/inode.c

+10 −8
Original line number Diff line number Diff line
@@ -67,7 +67,8 @@ struct fuse_mount_data { 
	unsigned rootmode_present:1;

	unsigned user_id_present:1;

	unsigned group_id_present:1;

	unsigned flags;

	unsigned default_permissions:1;

	unsigned allow_other:1;

	unsigned max_read;

	unsigned blksize;

};
@@ -193,7 +194,7 @@ void fuse_change_attributes_common(struct inode *inode, struct fuse_attr *attr, 
	 * check in may_delete().

	 */

	fi->orig_i_mode = inode->i_mode;

	if (!(fc->flags & FUSE_DEFAULT_PERMISSIONS))

	if (!fc->default_permissions)

		inode->i_mode &= ~S_ISVTX;



	fi->orig_ino = attr->ino;
@@ -534,11 +535,11 @@ static int parse_fuse_opt(char *opt, struct fuse_mount_data *d, int is_bdev) 
			break;



		case OPT_DEFAULT_PERMISSIONS:

			d->flags |= FUSE_DEFAULT_PERMISSIONS;

			d->default_permissions = 1;

			break;



		case OPT_ALLOW_OTHER:

			d->flags |= FUSE_ALLOW_OTHER;

			d->allow_other = 1;

			break;



		case OPT_MAX_READ:
@@ -572,9 +573,9 @@ static int fuse_show_options(struct seq_file *m, struct dentry *root) 


	seq_printf(m, ",user_id=%u", from_kuid_munged(&init_user_ns, fc->user_id));

	seq_printf(m, ",group_id=%u", from_kgid_munged(&init_user_ns, fc->group_id));

	if (fc->flags & FUSE_DEFAULT_PERMISSIONS)

	if (fc->default_permissions)

		seq_puts(m, ",default_permissions");

	if (fc->flags & FUSE_ALLOW_OTHER)

	if (fc->allow_other)

		seq_puts(m, ",allow_other");

	if (fc->max_read != ~0)

		seq_printf(m, ",max_read=%u", fc->max_read);
@@ -917,7 +918,7 @@ static void process_init_reply(struct fuse_conn *fc, struct fuse_req *req) 
			if (arg->time_gran && arg->time_gran <= 1000000000)

				fc->sb->s_time_gran = arg->time_gran;

			if ((arg->flags & FUSE_POSIX_ACL)) {

				fc->flags |= FUSE_DEFAULT_PERMISSIONS;

				fc->default_permissions = 1;

				fc->posix_acl = 1;

				fc->sb->s_xattr = fuse_acl_xattr_handlers;

			}
@@ -1119,7 +1120,8 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent) 
		fc->dont_mask = 1;

	sb->s_flags |= MS_POSIXACL;



	fc->flags = d.flags;

	fc->default_permissions = d.default_permissions;

	fc->allow_other = d.allow_other;

	fc->user_id = d.user_id;

	fc->group_id = d.group_id;

	fc->max_read = max_t(unsigned, 4096, d.max_read);