1 /* SPDX-License-Identifier: GPL-2.0 */
30  * iso9660 super-block data in memory
39 	int           s_rock_offset; /* offset of SUSP fields within SU area */
63 #define ISOFS_INVALID_MODE ((umode_t) -1)
67 	return sb->s_fs_info;  in ISOFS_SB()
125 			   unsigned long block,
126 			   unsigned long offset,
130 				       unsigned long block,  in isofs_iget()  argument
131 				       unsigned long offset)  in isofs_iget()  argument
133 	return __isofs_iget(sb, block, offset, 0);  in isofs_iget()
137 					     unsigned long block,  in isofs_iget_reloc()  argument
138 					     unsigned long offset)  in isofs_iget_reloc()  argument
140 	return __isofs_iget(sb, block, offset, 1);  in isofs_iget_reloc()
144  * underlying meta-data for an inode, we are free to choose a more
145  * convenient 32-bit number as the inode number.  The inode numbering
147 static inline unsigned long isofs_get_ino(unsigned long block,  in isofs_get_ino()  argument
148 					  unsigned long offset,  in isofs_get_ino()  argument
151 	return (block << (bufbits - 5)) | (offset >> 5);  in isofs_get_ino()
165  * block and offset by always making them point to the "."  directory.
179  * directories file, the normalized "offset" value is always 0.
181  * You should pass the directory entry in "de".  On return, "block"
182  * and "offset" will hold normalized values.  Only directories are
183  * affected making it safe to call even for non-directory file
187 				 unsigned long *block,  in isofs_normalize_block_and_offset()  argument
188 				 unsigned long *offset)  in isofs_normalize_block_and_offset()  argument
191 	if (de->flags[0] & 2) {  in isofs_normalize_block_and_offset()
192 		*offset = 0;  in isofs_normalize_block_and_offset()
193 		*block = (unsigned long)isonum_733(de->extent)  in isofs_normalize_block_and_offset()
194 			+ (unsigned long)isonum_711(de->ext_attr_length);  in isofs_normalize_block_and_offset()