getflags.c revision a6ce1349539f866334ef3d5758bc2ee44a454acd 
1/*
2 * getflags.c		- Get a file flags on an ext2 file system
3 *
4 * Copyright (C) 1993, 1994  Remy Card <card@masi.ibp.fr>
5 *                           Laboratoire MASI, Institut Blaise Pascal
6 *                           Universite Pierre et Marie Curie (Paris VI)
7 *
8 * %Begin-Header%
9 * This file may be redistributed under the terms of the GNU Library
10 * General Public License, version 2.
11 * %End-Header%
12 */
13
14/*
15 * History:
16 * 93/10/30	- Creation
17 */
18
19#if HAVE_ERRNO_H
20#include <errno.h>
21#endif
22#include <sys/types.h>
23#include <sys/stat.h>
24#if HAVE_EXT2_IOCTLS
25#include <sys/ioctl.h>
26#endif
27
28#include "e2p.h"
29
30int getflags (int fd, unsigned long * flags)
31{
32	struct stat buf;
33#if HAVE_STAT_FLAGS
34
35	if (fstat (fd, &buf) == -1)
36		return -1;
37
38	*flags = 0;
39#ifdef UF_IMMUTABLE
40	if (buf.st_flags & UF_IMMUTABLE)
41		*flags |= EXT2_IMMUTABLE_FL;
42#endif
43#ifdef UF_APPEND
44	if (buf.st_flags & UF_APPEND)
45		*flags |= EXT2_APPEND_FL;
46#endif
47#ifdef UF_NODUMP
48	if (buf.st_flags & UF_NODUMP)
49		*flags |= EXT2_NODUMP_FL;
50#endif
51
52	return 0;
53#else
54#if HAVE_EXT2_IOCTLS
55	int r, f;
56
57	if (!fstat(fd, &buf) &&
58	    !S_ISREG(buf.st_mode) && !S_ISDIR(buf.st_mode))
59		goto notsupp;
60	r = ioctl (fd, EXT2_IOC_GETFLAGS, &f);
61	*flags = f;
62	return r;
63#endif /* HAVE_EXT2_IOCTLS */
64#endif
65notsupp:
66	errno = EOPNOTSUPP;
67	return -1;
68}
69