1 files changed, 106 insertions, 0 deletions
diff --git a/lib/libarchive/archive_read_open_fd.c b/lib/libarchive/archive_read_open_fd.c
new file mode 100644
index 0000000..c5716e7
--- /dev/null
+++ b/lib/libarchive/archive_read_open_fd.c
@@ -0,0 +1,106 @@
+/*-
+ * Copyright (c) 2003-2004 Tim Kientzle
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer
+ *    in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "archive_platform.h"
+__FBSDID("$FreeBSD$");
+
+#include <sys/stat.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "archive.h"
+#include "archive_private.h"
+
+struct read_fd_data {
+	int	 fd;
+	size_t	 block_size;
+	void	*buffer;
+};
+
+static int	file_close(struct archive *, void *);
+static int	file_open(struct archive *, void *);
+static ssize_t	file_read(struct archive *, void *, const void **buff);
+
+int
+archive_read_open_fd(struct archive *a, int fd, size_t block_size)
+{
+	struct read_fd_data *mine;
+
+	mine = malloc(sizeof(*mine));
+	if (mine == NULL) {
+		archive_set_error(a, ENOMEM, "No memory");
+		return (ARCHIVE_FATAL);
+	}
+	mine->block_size = block_size;
+	mine->buffer = malloc(mine->block_size);
+	if (mine->buffer == NULL) {
+		archive_set_error(a, ENOMEM, "No memory");
+		free(mine);
+		return (ARCHIVE_FATAL);
+	}
+	mine->fd = fd;
+	return (archive_read_open(a, mine, file_open, file_read, file_close));
+}
+
+static int
+file_open(struct archive *a, void *client_data)
+{
+	struct read_fd_data *mine = client_data;
+	struct stat st;
+
+	if (fstat(mine->fd, &st) != 0) {
+		archive_set_error(a, errno, "Can't stat fd %d", mine->fd);
+		return (ARCHIVE_FATAL);
+	}
+
+	a->skip_file_dev = st.st_dev;
+	a->skip_file_ino = st.st_ino;
+	return (ARCHIVE_OK);
+}
+
+static ssize_t
+file_read(struct archive *a, void *client_data, const void **buff)
+{
+	struct read_fd_data *mine = client_data;
+
+	(void)a; /* UNUSED */
+	*buff = mine->buffer;
+	return (read(mine->fd, mine->buffer, mine->block_size));
+}
+
+static int
+file_close(struct archive *a, void *client_data)
+{
+	struct read_fd_data *mine = client_data;
+
+	(void)a; /* UNUSED */
+	if (mine->buffer != NULL)
+		free(mine->buffer);
+	free(mine);
+	return (ARCHIVE_OK);
+}