1 /*
2 * fgetflags.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 #ifndef _LARGEFILE_SOURCE
20 #define _LARGEFILE_SOURCE
21 #endif
22 #ifndef _LARGEFILE64_SOURCE
23 #define _LARGEFILE64_SOURCE
24 #endif
25
26 #include "config.h"
27 #if HAVE_ERRNO_H
28 #include <errno.h>
29 #endif
30 #if HAVE_UNISTD_H
31 #include <unistd.h>
32 #endif
33 #include <sys/types.h>
34 #include <sys/stat.h>
35 #if HAVE_EXT2_IOCTLS
36 #include <fcntl.h>
37 #include <sys/ioctl.h>
38 #endif
39
40 #include "e2p.h"
41
42 #ifdef O_LARGEFILE
43 #define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE)
44 #else
45 #define OPEN_FLAGS (O_RDONLY|O_NONBLOCK)
46 #endif
47
fgetflags(const char * name,unsigned long * flags)48 int fgetflags (const char * name, unsigned long * flags)
49 {
50 struct stat buf;
51 #if HAVE_STAT_FLAGS && !(APPLE_DARWIN && HAVE_EXT2_IOCTLS)
52
53 if (stat (name, &buf) == -1)
54 return -1;
55
56 *flags = 0;
57 #ifdef UF_IMMUTABLE
58 if (buf.st_flags & UF_IMMUTABLE)
59 *flags |= EXT2_IMMUTABLE_FL;
60 #endif
61 #ifdef UF_APPEND
62 if (buf.st_flags & UF_APPEND)
63 *flags |= EXT2_APPEND_FL;
64 #endif
65 #ifdef UF_NODUMP
66 if (buf.st_flags & UF_NODUMP)
67 *flags |= EXT2_NODUMP_FL;
68 #endif
69
70 return 0;
71 #else /* !HAVE_STAT_FLAGS || (APPLE_DARWIN && HAVE_EXT2_IOCTLS) */
72 #if HAVE_EXT2_IOCTLS
73 int fd, r, f, save_errno = 0;
74
75 if (!lstat(name, &buf) &&
76 !S_ISREG(buf.st_mode) && !S_ISDIR(buf.st_mode)) {
77 goto notsupp;
78 }
79 #if !APPLE_DARWIN
80 fd = open (name, OPEN_FLAGS);
81 if (fd == -1)
82 return -1;
83 r = ioctl (fd, EXT2_IOC_GETFLAGS, &f);
84 if (r == -1)
85 save_errno = errno;
86 *flags = f;
87 close (fd);
88 if (save_errno)
89 errno = save_errno;
90 return r;
91 #else /* APPLE_DARWIN */
92 f = -1;
93 save_errno = syscall(SYS_fsctl, name, EXT2_IOC_GETFLAGS, &f, 0);
94 *flags = f;
95 return (save_errno);
96 #endif /* !APPLE_DARWIN */
97 notsupp:
98 #endif /* HAVE_EXT2_IOCTLS */
99 #endif
100 errno = EOPNOTSUPP;
101 return -1;
102 }
103