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 * This file can be redistributed under the terms of the GNU Library General
9 * Public License
10 */
11
12 /*
13 * History:
14 * 93/10/30 - Creation
15 */
16
17 #define _LARGEFILE_SOURCE
18 #define _LARGEFILE64_SOURCE
19
20 #if HAVE_ERRNO_H
21 #include <errno.h>
22 #endif
23 #if HAVE_UNISTD_H
24 #include <unistd.h>
25 #endif
26 #include <sys/types.h>
27 #include <sys/stat.h>
28 #if HAVE_EXT2_IOCTLS
29 #include <fcntl.h>
30 #include <sys/ioctl.h>
31 #endif
32
33 #include "e2p.h"
34
35 #ifdef O_LARGEFILE
36 #define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE)
37 #else
38 #define OPEN_FLAGS (O_RDONLY|O_NONBLOCK)
39 #endif
40
fgetflags(const char * name,unsigned long * flags)41 int fgetflags (const char * name, unsigned long * flags)
42 {
43 struct stat buf;
44 #if HAVE_STAT_FLAGS && !(APPLE_DARWIN && HAVE_EXT2_IOCTLS)
45
46 if (stat (name, &buf) == -1)
47 return -1;
48
49 *flags = 0;
50 #ifdef UF_IMMUTABLE
51 if (buf.st_flags & UF_IMMUTABLE)
52 *flags |= EXT2_IMMUTABLE_FL;
53 #endif
54 #ifdef UF_APPEND
55 if (buf.st_flags & UF_APPEND)
56 *flags |= EXT2_APPEND_FL;
57 #endif
58 #ifdef UF_NODUMP
59 if (buf.st_flags & UF_NODUMP)
60 *flags |= EXT2_NODUMP_FL;
61 #endif
62
63 return 0;
64 #else
65 #if HAVE_EXT2_IOCTLS
66 int fd, r, f, save_errno = 0;
67
68 if (!stat(name, &buf) &&
69 !S_ISREG(buf.st_mode) && !S_ISDIR(buf.st_mode)) {
70 goto notsupp;
71 }
72 #if !APPLE_DARWIN
73 fd = open (name, OPEN_FLAGS);
74 if (fd == -1)
75 return -1;
76 r = ioctl (fd, EXT2_IOC_GETFLAGS, &f);
77 if (r == -1)
78 save_errno = errno;
79 *flags = f;
80 close (fd);
81 if (save_errno)
82 errno = save_errno;
83 return r;
84 #else
85 f = -1;
86 save_errno = syscall(SYS_fsctl, name, EXT2_IOC_GETFLAGS, &f, 0);
87 *flags = f;
88 return (save_errno);
89 #endif
90 #endif /* HAVE_EXT2_IOCTLS */
91 #endif
92 notsupp:
93 errno = EOPNOTSUPP;
94 return -1;
95 }
96