linux-6.12.1/fs/open.c

45 	/* Not pretty: "inode->i_size" shouldn't really be signed. But it is. */
73 	struct inode *inode;
76 	inode = path->dentry->d_inode;
79 	if (S_ISDIR(inode->i_mode))
81 	if (!S_ISREG(inode->i_mode))
89 	error = inode_permission(idmap, inode, MAY_WRITE);
94 	if (IS_APPEND(inode))
97 	error = get_write_access(inode);
105 	error = break_lease(inode, O_WRONLY);
114 	put_write_access(inode);
158 	struct inode *inode;
167 	inode = dentry->d_inode;
168 	if (!S_ISREG(inode->i_mode) || !(file->f_mode & FMODE_WRITE))
175 	/* Check IS_APPEND on real upper inode */
178 	sb_start_write(inode->i_sb);
183 	sb_end_write(inode->i_sb);
248 	struct inode *inode = file_inode(file);
289 	if ((mode & ~FALLOC_FL_KEEP_SIZE) && IS_APPEND(inode))
292 	if (IS_IMMUTABLE(inode))
298 	if (IS_SWAPFILE(inode))
313 	if (S_ISFIFO(inode->i_mode))
316 	if (S_ISDIR(inode->i_mode))
319 	if (!S_ISREG(inode->i_mode) && !S_ISBLK(inode->i_mode))
326 	if (sum > inode->i_sb->s_maxbytes)
470 	struct inode *inode;
497 	inode = d_backing_inode(path.dentry);
499 	if ((mode & MAY_EXEC) && S_ISREG(inode->i_mode)) {
509 	res = inode_permission(mnt_idmap(path.mnt), inode, mode | MAY_ACCESS);
511 	if (res || !(mode & S_IWOTH) || special_file(inode->i_mode))
638 	struct inode *inode = path->dentry->d_inode;
639 	struct inode *delegated_inode = NULL;
647 	inode_lock(inode);
651 	newattrs.ia_mode = (mode & S_IALLUGO) | (inode->i_mode & ~S_IALLUGO);
656 	inode_unlock(inode);
762 	struct inode *inode = path->dentry->d_inode;
763 	struct inode *delegated_inode = NULL;
773 	fs_userns = i_user_ns(inode);
783 	inode_lock(inode);
784 	if (!S_ISDIR(inode->i_mode))
786 				     setattr_should_drop_sgid(idmap, inode);
795 	inode_unlock(inode);
908 			  int (*open)(struct inode *, struct file *))
911 	struct inode *inode = f->f_path.dentry->d_inode;
915 	f->f_inode = inode;
916 	f->f_mapping = inode->i_mapping;
927 		i_readcount_inc(inode);
928 	} else if (f->f_mode & FMODE_WRITE && !special_file(inode->i_mode)) {
936 	if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))
939 	f->f_op = fops_get(inode->i_fop);
958 		error = open(inode, f);
993 		if (filemap_nr_thps(inode->i_mapping)) {
994 			struct address_space *mapping = inode->i_mapping;
996 			filemap_invalidate_lock(inode->i_mapping);
1005 			filemap_invalidate_unlock(inode->i_mapping);
1042 		int (*open)(struct inode *, struct file *))
1610  * Called when an inode is about to be open.
1615 int generic_file_open(struct inode * inode, struct file * filp)
1617 	if (!(filp->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
1630 int nonseekable_open(struct inode *inode, struct file *filp)
1648 int stream_open(struct inode *inode, struct file *filp)