X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;ds=sidebyside;f=pack.h;h=b31b37608d7f1901c74a20552770c306e633670c;hb=94bf9f7c37cca0241785a5f4e54e5cc98e175244;hp=790ff4a39681402d6b6e2517e5fcf1bec59bcdc5;hpb=df1b059d8dd5c16edaa98d7da842b2a32c01e526;p=git.git

diff --git a/pack.h b/pack.h
index 790ff4a39..b31b37608 100644
--- a/pack.h
+++ b/pack.h
@@ -10,30 +10,21 @@
 #define PACK_VERSION 2
 #define pack_version_ok(v) ((v) == htonl(2) || (v) == htonl(3))
 struct pack_header {
-	unsigned int hdr_signature;
-	unsigned int hdr_version;
-	unsigned int hdr_entries;
+	uint32_t hdr_signature;
+	uint32_t hdr_version;
+	uint32_t hdr_entries;
 };
 
 /*
- * Packed object index header
- *
- * struct pack_idx_header {
- * 	uint32_t idx_signature;
- *	uint32_t idx_version;
- * };
- *
- * Note: this header isn't active yet.  In future versions of git
- * we may change the index file format.  At that time we would start
- * the first four bytes of the new index format with this signature,
- * as all older git binaries would find this value illegal and abort
- * reading the file.
+ * The first four bytes of index formats later than version 1 should
+ * start with this signature, as all older git binaries would find this
+ * value illegal and abort reading the file.
  *
  * This is the case because the number of objects in a packfile
  * cannot exceed 1,431,660,000 as every object would need at least
- * 3 bytes of data and the overall packfile cannot exceed 4 GiB due
- * to the 32 bit offsets used by the index.  Clearly the signature
- * exceeds this maximum.
+ * 3 bytes of data and the overall packfile cannot exceed 4 GiB with
+ * version 1 of the index file due to the offsets limited to 32 bits.
+ * Clearly the signature exceeds this maximum.
  *
  * Very old git binaries will also compare the first 4 bytes to the
  * next 4 bytes in the index and abort with a "non-monotonic index"
@@ -43,5 +34,35 @@ struct pack_header {
  */
 #define PACK_IDX_SIGNATURE 0xff744f63	/* "\377tOc" */
 
+/* These may be overridden by command-line parameters */
+extern uint32_t pack_idx_default_version;
+extern uint32_t pack_idx_off32_limit;
+
+/*
+ * Packed object index header
+ */
+struct pack_idx_header {
+	uint32_t idx_signature;
+	uint32_t idx_version;
+};
+
+/*
+ * Common part of object structure used for write_idx_file
+ */
+struct pack_idx_entry {
+	unsigned char sha1[20];
+	uint32_t crc32;
+	off_t offset;
+};
+
+extern char *write_idx_file(char *index_name, struct pack_idx_entry **objects, int nr_objects, unsigned char *sha1);
+
 extern int verify_pack(struct packed_git *, int);
+extern void fixup_pack_header_footer(int, unsigned char *, const char *, uint32_t);
+extern char *index_pack_lockfile(int fd);
+
+#define PH_ERROR_EOF		(-1)
+#define PH_ERROR_PACK_SIGNATURE	(-2)
+#define PH_ERROR_PROTOCOL	(-3)
+extern int read_pack_header(int fd, struct pack_header *);
 #endif