1 /* vi: set sw=4 ts=4: */
3 * fgetversion.c - Get a file version on an ext2 file system
4 * fsetversion.c - Set a file version on an ext2 file system
7 * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
8 * Laboratoire MASI, Institut Blaise Pascal
9 * Universite Pierre et Marie Curie (Paris VI)
11 * This file can be redistributed under the terms of the GNU Library General
27 #include <sys/ioctl.h>
32 #define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE)
34 #define OPEN_FLAGS (O_RDONLY|O_NONBLOCK)
38 To do fsetversion: unsigned long *ptr_version must be set to NULL.
39 and unsigned long version must be set to a value
40 To do fgetversion: unsigned long *ptr_version must NOT be set to NULL
41 and unsigned long version is ignored.
45 int fgetsetversion (const char * name
, unsigned long * get_version
, unsigned long set_version
)
47 #ifdef HAVE_EXT2_IOCTLS
48 int fd
, r
, ver
, save_errno
= 0;
50 fd
= open (name
, OPEN_FLAGS
);
54 ver
= (int) set_version
;
55 r
= ioctl (fd
, EXT2_IOC_SETVERSION
, &ver
);
57 r
= ioctl (fd
, EXT2_IOC_GETVERSION
, &ver
);
66 #else /* ! HAVE_EXT2_IOCTLS */
69 #endif /* ! HAVE_EXT2_IOCTLS */