| 1,6 → 1,3 |
|---|
| /* This file contains the procedures that look up path names in the directory |
| * system and determine the inode number that goes with a given path name. |
| */ |
| /* |
| * Copyright (c) 1987,1997, Prentice Hall |
| * All rights reserved. |
| 35,17 → 32,18 |
|---|
| * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
| * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup FileSystemImpl |
| * @{ |
| */ |
| |
| /** |
| * @file path.c |
| * @brief This file contains the procedures that look up path names in the directory |
| * system and determine the inode number that goes with a given path name. |
| */ |
| |
| /* Methods: |
| * eat_path: the 'main' routine of the path-to-inode conversion mechanism |
| * last_dir: find the final directory on a given path |
| * advance: parse one component of a path name |
| * search_dir: search a directory for a string and return its inode number |
| * search_dir_ex: used for extended versions |
| */ |
| |
| |
| #include <string.h> |
| #include "fs.h" |
| #include "block.h" |
| 57,6 → 55,9 |
|---|
| |
| static char *get_name(char *old_name, char *string, int string_length); |
| |
| /** |
| * The 'main' routine of the path-to-inode conversion mechanism |
| */ |
| inode_t *eat_path(char *path) |
| { |
| |
| 92,7 → 93,10 |
|---|
| |
| return rip; |
| } |
| |
| |
| /** |
| * Find the final directory on a given path |
| */ |
| inode_t *last_dir(char *path, char *string, int string_length) |
| { |
| |
| 151,6 → 155,9 |
|---|
| } |
| } |
| |
| /** |
| * Parse one component of a path name |
| */ |
| char *get_name(char *old_name, char *string, int string_length) |
| { |
| |
| 194,7 → 201,10 |
|---|
| |
| return rnp; |
| } |
| |
| |
| /** |
| * |
| */ |
| inode_t *advance(inode_t *dirp, char *string, int string_length) |
| { |
| |
| 238,6 → 248,9 |
|---|
| return rip; /* return pointer to inode's component */ |
| } |
| |
| /** |
| * Search a directory for a string and return its inode number |
| */ |
| int search_dir(register inode_t *ldir_ptr, char string[NAME_MAX], ino_t *numb, int flag) |
| { |
| |
| 305,6 → 318,9 |
|---|
| return(flag == IS_EMPTY ? OK : FS_ENOENT); |
| } |
| |
| /** |
| * Used for extended versions |
| */ |
| int search_dir_ex(register inode_t *ldir_ptr, char string[NAME_MAX_EX], ino_t *numb, int flag) |
| { |
| |
| 369,3 → 385,8 |
|---|
| return(flag == IS_EMPTY ? OK : FS_ENOENT); |
| } |
| |
| |
| /** |
| * } |
| */ |
| |