init

db_include/pgtar.h

@@ -0,0 +1,45 @@
+/*-------------------------------------------------------------------------
+ *
+ * pgtar.h
+ *	  Functions for manipulating tarfile datastructures (src/port/tar.c)
+ *
+ *
+ * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/pgtar.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PG_TAR_H
+#define PG_TAR_H
+
+#define		TAR_BLOCK_SIZE	512
+
+enum tarError
+{
+	TAR_OK = 0,
+	TAR_NAME_TOO_LONG,
+	TAR_SYMLINK_TOO_LONG
+};
+
+extern enum tarError tarCreateHeader(char *h, const char *filename,
+									 const char *linktarget, pgoff_t size,
+									 mode_t mode, uid_t uid, gid_t gid,
+									 time_t mtime);
+extern uint64 read_tar_number(const char *s, int len);
+extern void print_tar_number(char *s, int len, uint64 val);
+extern int	tarChecksum(char *header);
+
+/*
+ * Compute the number of padding bytes required for an entry in a tar
+ * archive. We must pad out to a multiple of TAR_BLOCK_SIZE. Since that's
+ * a power of 2, we can use TYPEALIGN().
+ */
+static inline size_t
+tarPaddingBytesRequired(size_t len)
+{
+	return TYPEALIGN(TAR_BLOCK_SIZE, len) - len;
+}
+
+#endif