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authorMike Frysinger2005-04-22 02:33:37 +0000
committerMike Frysinger2005-04-22 02:33:37 +0000
commitde9f1f757af7e15881156b610431cd00c262f768 (patch)
treea7fd230099dc3388b179ca51e806495f052c01c5 /util-linux/e2p/fgetversion.c
parent2c12d435e5ccd402f6210827df0b2038093fbcee (diff)
downloadbusybox-de9f1f757af7e15881156b610431cd00c262f768.zip
busybox-de9f1f757af7e15881156b610431cd00c262f768.tar.gz
import lsattr and chattr from e2fsprogs
Diffstat (limited to 'util-linux/e2p/fgetversion.c')
-rw-r--r--util-linux/e2p/fgetversion.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/util-linux/e2p/fgetversion.c b/util-linux/e2p/fgetversion.c
new file mode 100644
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--- /dev/null
+++ b/util-linux/e2p/fgetversion.c
@@ -0,0 +1,62 @@
+/*
+ * 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)
+ *
+ * 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 fgetversion (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;
+ r = ioctl (fd, EXT2_IOC_GETVERSION, &ver);
+ if (r == -1)
+ save_errno = errno;
+ *version = ver;
+ close (fd);
+ if (save_errno)
+ errno = save_errno;
+ return r;
+#else
+ int ver=-1, err;
+ err = syscall(SYS_fsctl, name, EXT2_IOC_GETVERSION, &ver, 0);
+ *version = ver;
+ return(err);
+#endif
+#else /* ! HAVE_EXT2_IOCTLS */
+ extern int errno;
+ errno = EOPNOTSUPP;
+ return -1;
+#endif /* ! HAVE_EXT2_IOCTLS */
+}