summaryrefslogtreecommitdiffstats
path: root/lib/e2p/fgetflags.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--lib/e2p/fgetflags.c117
1 files changed, 117 insertions, 0 deletions
diff --git a/lib/e2p/fgetflags.c b/lib/e2p/fgetflags.c
new file mode 100644
index 0000000..24a7166
--- /dev/null
+++ b/lib/e2p/fgetflags.c
@@ -0,0 +1,117 @@
+/*
+ * fgetflags.c - Get a file flags on an ext2 file system
+ *
+ * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
+ * Laboratoire MASI, Institut Blaise Pascal
+ * Universite Pierre et Marie Curie (Paris VI)
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Library
+ * General Public License, version 2.
+ * %End-Header%
+ */
+
+/*
+ * History:
+ * 93/10/30 - Creation
+ */
+
+#ifndef _LARGEFILE_SOURCE
+#define _LARGEFILE_SOURCE
+#endif
+#ifndef _LARGEFILE64_SOURCE
+#define _LARGEFILE64_SOURCE
+#endif
+
+#include "config.h"
+#if HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <sys/types.h>
+#include <sys/stat.h>
+#if HAVE_EXT2_IOCTLS
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#endif
+
+#include "e2p.h"
+
+#ifndef O_LARGEFILE
+#define O_LARGEFILE 0
+#endif
+#ifndef O_NOFOLLOW
+#define O_NOFOLLOW 0
+#endif
+
+#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_NOFOLLOW)
+
+int fgetflags (const char * name, unsigned long * flags)
+{
+#if HAVE_STAT_FLAGS && !(APPLE_DARWIN && HAVE_EXT2_IOCTLS)
+ struct stat buf;
+
+ if (stat (name, &buf) == -1)
+ return -1;
+
+ *flags = 0;
+#ifdef UF_IMMUTABLE
+ if (buf.st_flags & UF_IMMUTABLE)
+ *flags |= EXT2_IMMUTABLE_FL;
+#endif
+#ifdef UF_APPEND
+ if (buf.st_flags & UF_APPEND)
+ *flags |= EXT2_APPEND_FL;
+#endif
+#ifdef UF_NODUMP
+ if (buf.st_flags & UF_NODUMP)
+ *flags |= EXT2_NODUMP_FL;
+#endif
+
+ return 0;
+#elif APPLE_DARWIN && HAVE_EXT2_IOCTLS
+ int f, save_errno = 0;
+
+ f = -1;
+ save_errno = syscall(SYS_fsctl, name, EXT2_IOC_GETFLAGS, &f, 0);
+ *flags = f;
+ return (save_errno);
+#elif HAVE_EXT2_IOCTLS
+ struct stat buf;
+ int fd, r, f, save_errno = 0;
+
+ if (!stat(name, &buf) &&
+ !S_ISREG(buf.st_mode) && !S_ISDIR(buf.st_mode)) {
+ errno = EOPNOTSUPP;
+ return -1;
+ }
+ fd = open(name, OPEN_FLAGS);
+ if (fd == -1) {
+ if (errno == ELOOP || errno == ENXIO)
+ errno = EOPNOTSUPP;
+ return -1;
+ }
+ if (!fstat(fd, &buf) &&
+ !S_ISREG(buf.st_mode) && !S_ISDIR(buf.st_mode)) {
+ close(fd);
+ errno = EOPNOTSUPP;
+ return -1;
+ }
+ r = ioctl(fd, EXT2_IOC_GETFLAGS, &f);
+ if (r == -1) {
+ if (errno == ENOTTY)
+ errno = EOPNOTSUPP;
+ save_errno = errno;
+ }
+ *flags = f;
+ close(fd);
+ if (save_errno)
+ errno = save_errno;
+ return r;
+#else
+ errno = EOPNOTSUPP;
+ return -1;
+#endif
+}