| 1 | /*
|
|---|
| 2 | * shared_stat.h - Shared structure used by the stat() syscall.
|
|---|
| 3 | *
|
|---|
| 4 | * Author Alain Greiner (2016,2017,2018)
|
|---|
| 5 | *
|
|---|
| 6 | * Copyright (c) UPMC Sorbonne Universites
|
|---|
| 7 | *
|
|---|
| 8 | * This file is part of ALMOS-MKH.
|
|---|
| 9 | *
|
|---|
| 10 | * ALMOS-MKH is free software; you can redistribute it and/or modify it
|
|---|
| 11 | * under the terms of the GNU General Public License as published by
|
|---|
| 12 | * the Free Software Foundation; version 2.0 of the License.
|
|---|
| 13 | *
|
|---|
| 14 | * ALMOS-MKH is distributed in the hope that it will be useful, but
|
|---|
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|---|
| 17 | * General Public License for more details.
|
|---|
| 18 | *
|
|---|
| 19 | * You should have received a copy of the GNU General Public License
|
|---|
| 20 | * along with ALMOS-MKH; if not, write to the Free Software Foundation,
|
|---|
| 21 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|---|
| 22 | */
|
|---|
| 23 |
|
|---|
| 24 | #ifndef _SHARED_STAT_H_
|
|---|
| 25 | #define _SHARED_STAT_H_
|
|---|
| 26 |
|
|---|
| 27 | /******************************************************************************************
|
|---|
| 28 | * This structure define the informations associated to a file descriptor,
|
|---|
| 29 | * returned to user space by the stat() syscall.
|
|---|
| 30 | *****************************************************************************************/
|
|---|
| 31 |
|
|---|
| 32 | struct stat
|
|---|
| 33 | {
|
|---|
| 34 | unsigned int st_dev; /*! ID of device containing file */
|
|---|
| 35 | unsigned int st_ino; /*! inode number */
|
|---|
| 36 | unsigned int st_mode; /*! bit vector defined below */
|
|---|
| 37 | unsigned int st_nlink; /*! number of hard links */
|
|---|
| 38 | unsigned int st_uid; /*! user ID of owner */
|
|---|
| 39 | unsigned int st_gid; /*! group ID of owner */
|
|---|
| 40 | unsigned int st_rdev; /*! device ID (if special file) */
|
|---|
| 41 | unsigned int st_size; /*! total size, in bytes */
|
|---|
| 42 | unsigned int st_blksize; /*! blocksize for file system I/O */
|
|---|
| 43 | unsigned int st_blocks; /*! number of allocated blocks */
|
|---|
| 44 | };
|
|---|
| 45 |
|
|---|
| 46 | /******************************************************************************************
|
|---|
| 47 | * The st_mode field contains informations on both access rights and file types.
|
|---|
| 48 | * - access rights (defined by the inode <rights> field) are stored in st_mode[15:0]
|
|---|
| 49 | * - file types (defined by the inode <type> field) are stored in st_mode[19:16]
|
|---|
| 50 | * The following macros can be used to extract file type information.
|
|---|
| 51 | *
|
|---|
| 52 | * WARNING : these macros must be kept consistent with inode types in <vfs.h> file.
|
|---|
| 53 | * and with types in <dirent.h> file.
|
|---|
| 54 | *****************************************************************************************/
|
|---|
| 55 |
|
|---|
| 56 | #define S_ISREG(x) ((((x)>>16) & 0xF) == 0) /*! it is a regular file */
|
|---|
| 57 | #define S_ISDIR(x) ((((x)>>16) & 0xF) == 1) /*! it is a directory */
|
|---|
| 58 | #define S_ISFIFO(x) ((((x)>>16) & 0xF) == 2) /*! it is a named pipe */
|
|---|
| 59 | #define S_ISPIPE(x) ((((x)>>16) & 0xF) == 3) /*! it is an anonymous pipe */
|
|---|
| 60 | #define S_ISSOCK(x) ((((x)>>16) & 0xF) == 4) /*! it is a socket */
|
|---|
| 61 | #define S_ISCHR(x) ((((x)>>16) & 0xF) == 5) /*! it is a character device */
|
|---|
| 62 | #define S_ISBLK(x) ((((x)>>16) & 0xF) == 6) /*! it is a block device */
|
|---|
| 63 | #define S_ISLNK(x) ((((x)>>16) & 0xF) == 7) /*! it is a symbolic link */
|
|---|
| 64 |
|
|---|
| 65 | #endif /* _STAT_H_ */
|
|---|
