pmt: initial 2.9.1 update

jni/e2fsprogs/lib/e2p/fgetversion.c

@@ -0,0 +1,74 @@
+/*
+ * fgetversion.c	- Get a file version 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 <fcntl.h>
+#if HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+
+#include "e2p.h"
+
+#ifdef O_LARGEFILE
+#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE)
+#else
+#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK)
+#endif
+
+int fgetversion(const char *name, unsigned long *version)
+{
+	unsigned int ver = -1;
+	int rc = -1;
+#if HAVE_EXT2_IOCTLS
+# if !APPLE_DARWIN
+	int fd, save_errno = 0;
+
+	fd = open(name, OPEN_FLAGS);
+	if (fd == -1)
+		return -1;
+
+	rc = ioctl(fd, EXT2_IOC_GETVERSION, &ver);
+	if (rc == -1)
+		save_errno = errno;
+	close(fd);
+	if (rc == -1)
+		errno = save_errno;
+# else /* APPLE_DARWIN */
+	rc = syscall(SYS_fsctl, name, EXT2_IOC_GETVERSION, &ver, 0);
+# endif /* !APPLE_DARWIN */
+#else /* ! HAVE_EXT2_IOCTLS */
+	errno = EOPNOTSUPP;
+#endif /* ! HAVE_EXT2_IOCTLS */
+	if (rc == 0)
+		*version = ver;
+
+	return rc;
+}