summaryrefslogtreecommitdiffhomepage
path: root/util-linux/e2p/fsetversion.c
diff options
context:
space:
mode:
Diffstat (limited to 'util-linux/e2p/fsetversion.c')
-rw-r--r--util-linux/e2p/fsetversion.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/util-linux/e2p/fsetversion.c b/util-linux/e2p/fsetversion.c
new file mode 100644
index 000000000..93243d6e0
--- /dev/null
+++ b/util-linux/e2p/fsetversion.c
@@ -0,0 +1,60 @@
+/*
+ * fsetversion.c - Set 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)
+ *
+ * This file can be redistributed under the terms of the GNU Library General
+ * Public License
+ */
+
+/*
+ * History:
+ * 93/10/30 - Creation
+ */
+
+#if HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <fcntl.h>
+#include <sys/ioctl.h>
+
+#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 fsetversion (const char * name, unsigned long version)
+{
+#if HAVE_EXT2_IOCTLS
+#if !APPLE_DARWIN
+ int fd, r, ver, save_errno = 0;
+
+ fd = open (name, OPEN_FLAGS);
+ if (fd == -1)
+ return -1;
+ ver = (int) version;
+ r = ioctl (fd, EXT2_IOC_SETVERSION, &ver);
+ if (r == -1)
+ save_errno = errno;
+ close (fd);
+ if (save_errno)
+ errno = save_errno;
+ return r;
+#else
+ int ver = (int)version;
+ return syscall(SYS_fsctl, name, EXT2_IOC_SETVERSION, &ver, 0);
+#endif
+#else /* ! HAVE_EXT2_IOCTLS */
+ extern int errno;
+ errno = EOPNOTSUPP;
+ return -1;
+#endif /* ! HAVE_EXT2_IOCTLS */
+}