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