2 * fgetversion.c - Get a file version on an ext2 file system
3 * fsetversion.c - Set a file version on an ext2 file system
6 * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
7 * Laboratoire MASI, Institut Blaise Pascal
8 * Universite Pierre et Marie Curie (Paris VI)
10 * This file can be redistributed under the terms of the GNU Library General
26 #include <sys/ioctl.h>
31 #define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE)
33 #define OPEN_FLAGS (O_RDONLY|O_NONBLOCK)
37 To do fsetversion: unsigned long *ptr_version must be set to NULL.
38 and unsigned long version must be set to a value
39 To do fgetversion: unsigned long *ptr_version must NOT be set to NULL
40 and unsigned long version is ignored.
44 int fgetsetversion (const char * name, unsigned long * get_version, unsigned long set_version)
47 int fd, r, ver, save_errno = 0;
49 fd = open (name, OPEN_FLAGS);
53 ver = (int) set_version;
54 r = ioctl (fd, EXT2_IOC_SETVERSION, &ver);
56 r = ioctl (fd, EXT2_IOC_GETVERSION, &ver);
65 #else /* ! HAVE_EXT2_IOCTLS */
68 #endif /* ! HAVE_EXT2_IOCTLS */