| 32,42 → 32,55 |
|---|
| * 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 inode.h |
| * @brief Inode table definition. |
| */ |
| |
| /* Inode table. This table holds inodes that are currently in use. In some |
| * cases they have been opened by an open() or creat() system call, in other |
| * cases the file system itself needs the inode for one reason or another, |
| * such as to search a directory for a path name. |
| * The first part of the struct holds fields that are present on the |
| * disk; the second part holds fields not present on the disk. |
| */ |
| |
| #ifndef _INODE_H |
| #define _INODE_H |
| |
| #include "super.h" |
| |
| #define NIL_INODE (inode_t *) 0 /* indicates absence of inode slot */ |
| #define NIL_INODE (inode_t *) 0 /**< indicates absence of inode slot */ |
| |
| #define NO_SEEK 0 /* i_seek = NO_SEEK if last op was not SEEK */ |
| #define ISEEK 1 /* i_seek = ISEEK if last op was SEEK */ |
| #define NO_SEEK 0 /**< i_seek = NO_SEEK if last op was not SEEK */ |
| #define ISEEK 1 /**< i_seek = ISEEK if last op was SEEK */ |
| |
| /* |
| * This table holds inodes that are currently in use. In some |
| * cases they have been opened by an open() or creat() system call, in other |
| * cases the file system itself needs the inode for one reason or another, |
| * such as to search a directory for a path name. |
| * The first part of the struct holds fields that are present on the |
| * disk; the second part holds fields not present on the disk. |
| */ |
| typedef struct { |
| mode_t i_mode; /* file type, protection, etc. */ |
| nlink_t i_nlinks; /* how many links to this file */ |
| offset_t i_size; /* current file size in bytes */ |
| zone_t i_zone[V2_NR_TZONES]; /* zone numbers for direct, ind, and dbl ind */ |
| mode_t i_mode; /**< file type, protection, etc. */ |
| nlink_t i_nlinks; /**< how many links to this file */ |
| offset_t i_size; /**< current file size in bytes */ |
| zone_t i_zone[V2_NR_TZONES]; /**< zone numbers for direct, ind, and dbl ind */ |
| |
| /* The following items are not present on the disk. */ |
| dev_t i_dev; /* which device is the inode on */ |
| ino_t i_num; /* inode number on its (minor) device */ |
| int i_count; /* # times inode used; 0 means slot is free */ |
| int i_ndzones; /* # direct zones (NR_DZONES) */ |
| int i_nindirs; /* # indirect zones per indirect block */ |
| super_block_t *i_sp; /* pointer to super block for inode's device */ |
| char i_seek; /* set on LSEEK, cleared on READ */ |
| dev_t i_dev; /**< which device is the inode on */ |
| ino_t i_num; /**< inode number on its (minor) device */ |
| int i_count; /**< # times inode used; 0 means slot is free */ |
| int i_ndzones; /**< # direct zones (NR_DZONES) */ |
| int i_nindirs; /**< # indirect zones per indirect block */ |
| super_block_t *i_sp; /**< pointer to super block for inode's device */ |
| char i_seek; /**< set on LSEEK, cleared on READ */ |
| } inode_t; |
| |
| extern inode_t inode[NR_INODES]; |
| |
| #endif /* _INODE_H */ |
| |
| /** |
| * } |
| */ |
| |