STAT — Get file status ¶CALL STAT(NAME, VALUES [, STATUS]) |
STATUS = STAT(NAME, VALUES) |
This function returns information about a file. No permissions are required on the file itself, but execute (search) permission is required on all of the directories in path that lead to the file.
The elements that are obtained and stored in the array VALUES:
VALUES(1) | Device ID |
VALUES(2) | Inode number |
VALUES(3) | File mode |
VALUES(4) | Number of links |
VALUES(5) | Owner’s uid |
VALUES(6) | Owner’s gid |
VALUES(7) | ID of device containing directory entry for file (0 if not available) |
VALUES(8) | File size (bytes) |
VALUES(9) | Last access time |
VALUES(10) | Last modification time |
VALUES(11) | Last file status change time |
VALUES(12) | Preferred I/O block size (-1 if not available) |
VALUES(13) | Number of blocks allocated (-1 if not available) |
Not all these elements are relevant on all systems. If an element is not relevant, it is returned as 0. If the value of an element would overflow the range of default integer, a -1 is returned instead.
This intrinsic is provided in both subroutine and function forms; however, only one form can be used in any given program unit.
Subroutine, function
| NAME | The type shall be CHARACTER, of the
default kind and a valid path within the file system. |
| VALUES | The type shall be INTEGER, DIMENSION(13)
of either kind 4 or kind 8. |
| STATUS | (Optional) status flag of type INTEGER
of kind 2 or larger.
Returns 0 on success and a system specific error code otherwise. |
PROGRAM test_stat
INTEGER, DIMENSION(13) :: buff
INTEGER :: status
CALL STAT("/etc/passwd", buff, status)
IF (status == 0) THEN
WRITE (*, FMT="('Device ID:', T30, I19)") buff(1)
WRITE (*, FMT="('Inode number:', T30, I19)") buff(2)
WRITE (*, FMT="('File mode (octal):', T30, O19)") buff(3)
WRITE (*, FMT="('Number of links:', T30, I19)") buff(4)
WRITE (*, FMT="('Owner''s uid:', T30, I19)") buff(5)
WRITE (*, FMT="('Owner''s gid:', T30, I19)") buff(6)
WRITE (*, FMT="('Device where located:', T30, I19)") buff(7)
WRITE (*, FMT="('File size:', T30, I19)") buff(8)
WRITE (*, FMT="('Last access time:', T30, A19)") CTIME(buff(9))
WRITE (*, FMT="('Last modification time', T30, A19)") CTIME(buff(10))
WRITE (*, FMT="('Last status change time:', T30, A19)") CTIME(buff(11))
WRITE (*, FMT="('Preferred block size:', T30, I19)") buff(12)
WRITE (*, FMT="('No. of blocks allocated:', T30, I19)") buff(13)
END IF
END PROGRAM
GNU extension
To stat an open file:
FSTAT — Get file status
To stat a link:
LSTAT — Get file status