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 #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
31 /*
32 * Deal with lame glibc's that define this function without actually
33 * implementing it. Can you say "attractive nuisance", boys and girls?
34 * I knew you could!
35 */
36 #ifdef __linux__
37 #undef HAVE_CHFLAGS
38 #endif
39
setflags(int fd,unsigned long flags)40 int setflags (int fd, unsigned long flags)
41 {
42 #if HAVE_CHFLAGS
43 unsigned long bsd_flags = 0;
44
45 #ifdef UF_IMMUTABLE
46 if (flags & EXT2_IMMUTABLE_FL)
47 bsd_flags |= UF_IMMUTABLE;
48 #endif
49 #ifdef UF_APPEND
50 if (flags & EXT2_APPEND_FL)
51 bsd_flags |= UF_APPEND;
52 #endif
53 #ifdef UF_NODUMP
54 if (flags & EXT2_NODUMP_FL)
55 bsd_flags |= UF_NODUMP;
56 #endif
57
58 return fchflags (fd, bsd_flags);
59 #else /* ! HAVE_CHFLAGS */
60 #if HAVE_EXT2_IOCTLS
61 struct stat buf;
62 int f;
63
64 if (!fstat(fd, &buf) &&
65 !S_ISREG(buf.st_mode) && !S_ISDIR(buf.st_mode)) {
66 errno = EOPNOTSUPP;
67 return -1;
68 }
69 f = (int) flags;
70
71 return ioctl(fd, EXT2_IOC_SETFLAGS, &f);
72 #else
73 errno = EOPNOTSUPP;
74 return -1;
75 #endif /* HAVE_EXT2_IOCTLS */
76 #endif /* HAVE_CHFLAGS */
77 }
78