1 /*
2 * setflags.c - Set 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
30 /*
31 * Deal with lame glibc's that define this function without actually
32 * implementing it. Can you say "attractive nuisance", boys and girls?
33 * I knew you could!
34 */
35 #ifdef __linux__
36 #undef HAVE_CHFLAGS
37 #endif
38
setflags(int fd,unsigned long flags)39 int setflags (int fd, unsigned long flags)
40 {
41 #if HAVE_CHFLAGS
42 unsigned long bsd_flags = 0;
43
44 #ifdef UF_IMMUTABLE
45 if (flags & EXT2_IMMUTABLE_FL)
46 bsd_flags |= UF_IMMUTABLE;
47 #endif
48 #ifdef UF_APPEND
49 if (flags & EXT2_APPEND_FL)
50 bsd_flags |= UF_APPEND;
51 #endif
52 #ifdef UF_NODUMP
53 if (flags & EXT2_NODUMP_FL)
54 bsd_flags |= UF_NODUMP;
55 #endif
56
57 return fchflags (fd, bsd_flags);
58 #else /* ! HAVE_CHFLAGS */
59 #if HAVE_EXT2_IOCTLS
60 struct stat buf;
61 int f;
62
63 if (!fstat(fd, &buf) &&
64 !S_ISREG(buf.st_mode) && !S_ISDIR(buf.st_mode)) {
65 errno = EOPNOTSUPP;
66 return -1;
67 }
68 f = (int) flags;
69
70 return ioctl(fd, EXT2_IOC_SETFLAGS, &f);
71 #else
72 errno = EOPNOTSUPP;
73 return -1;
74 #endif /* HAVE_EXT2_IOCTLS */
75 #endif /* HAVE_CHFLAGS */
76 }
77