Cleanup: split read_header.c in libtar.a

Simply moving the pax header decoding to a separate file and splitting
out the common helper functions should be a good start.

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 24 insertions, 3 deletions

diff --git a/lib/tar/read_retry.c b/lib/tar/read_retry.c
index c76e5e5..2a2f82c 100644
--- a/lib/tar/read_retry.c
+++ b/lib/tar/read_retry.c
@@ -6,10 +6,8 @@
  */
 #include "config.h"
 
-#include <errno.h>
-#include <stdio.h>
-
 #include "tar.h"
+#include "internal.h"
 
 int read_retry(const char *errstr, FILE *fp, void *buffer, size_t size)
 {
@@ -34,3 +32,26 @@ int read_retry(const char *errstr, FILE *fp, void *buffer, size_t size)
 
 	return 0;
 }
+
+char *record_to_memory(FILE *fp, sqfs_u64 size)
+{
+	char *buffer = malloc(size + 1);
+
+	if (buffer == NULL)
+		goto fail_errno;
+
+	if (read_retry("reading tar record", fp, buffer, size))
+		goto fail;
+
+	if (skip_padding(fp, size))
+		goto fail;
+
+	buffer[size] = '\0';
+	return buffer;
+fail_errno:
+	perror("reading tar record");
+	goto fail;
+fail:
+	free(buffer);
+	return NULL;
+}