getflags.c revision d1154eb460efe588eaed3d439c1caaca149fa362 
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#include "config.h"
20#if HAVE_ERRNO_H
21#include <errno.h>
22#endif
23#include <sys/types.h>
24#include <sys/stat.h>
25#if HAVE_EXT2_IOCTLS
26#include <sys/ioctl.h>
27#endif
28
29#include "e2p.h"
30
31int getflags (int fd, unsigned long * flags)
32{
33	struct stat buf;
34#if HAVE_STAT_FLAGS
35
36	if (fstat (fd, &buf) == -1)
37		return -1;
38
39	*flags = 0;
40#ifdef UF_IMMUTABLE
41	if (buf.st_flags & UF_IMMUTABLE)
42		*flags |= EXT2_IMMUTABLE_FL;
43#endif
44#ifdef UF_APPEND
45	if (buf.st_flags & UF_APPEND)
46		*flags |= EXT2_APPEND_FL;
47#endif
48#ifdef UF_NODUMP
49	if (buf.st_flags & UF_NODUMP)
50		*flags |= EXT2_NODUMP_FL;
51#endif
52
53	return 0;
54#else
55#if HAVE_EXT2_IOCTLS
56	int r, f;
57
58	if (!fstat(fd, &buf) &&
59	    !S_ISREG(buf.st_mode) && !S_ISDIR(buf.st_mode))
60		goto notsupp;
61	r = ioctl(fd, EXT2_IOC_GETFLAGS, &f);
62	*flags = f;
63
64	return r;
65notsupp:
66#endif /* HAVE_EXT2_IOCTLS */
67#endif
68	errno = EOPNOTSUPP;
69	return -1;
70}
71