diff options
Diffstat (limited to 'third_party/git/pack.h')
-rw-r--r-- | third_party/git/pack.h | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/third_party/git/pack.h b/third_party/git/pack.h deleted file mode 100644 index 9fc0945ac916..000000000000 --- a/third_party/git/pack.h +++ /dev/null @@ -1,106 +0,0 @@ -#ifndef PACK_H -#define PACK_H - -#include "object.h" -#include "csum-file.h" - -struct repository; - -/* - * Packed object header - */ -#define PACK_SIGNATURE 0x5041434b /* "PACK" */ -#define PACK_VERSION 2 -#define pack_version_ok(v) ((v) == htonl(2) || (v) == htonl(3)) -struct pack_header { - uint32_t hdr_signature; - uint32_t hdr_version; - uint32_t hdr_entries; -}; - -/* - * 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 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" - * error if the second 4 byte word is smaller than the first 4 - * byte word. This would be true in the proposed future index - * format as idx_signature would be greater than idx_version. - */ -#define PACK_IDX_SIGNATURE 0xff744f63 /* "\377tOc" */ - -struct pack_idx_option { - unsigned flags; - /* flag bits */ -#define WRITE_IDX_VERIFY 01 /* verify only, do not write the idx file */ -#define WRITE_IDX_STRICT 02 - - uint32_t version; - uint32_t off32_limit; - - /* - * List of offsets that would fit within off32_limit but - * need to be written out as 64-bit entity for byte-for-byte - * verification. - */ - int anomaly_alloc, anomaly_nr; - uint32_t *anomaly; -}; - -void reset_pack_idx_option(struct pack_idx_option *); - -/* - * 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 { - struct object_id oid; - uint32_t crc32; - off_t offset; -}; - - -struct progress; -/* Note, the data argument could be NULL if object type is blob */ -typedef int (*verify_fn)(const struct object_id *, enum object_type, unsigned long, void*, int*); - -const char *write_idx_file(const char *index_name, struct pack_idx_entry **objects, int nr_objects, const struct pack_idx_option *, const unsigned char *sha1); -int check_pack_crc(struct packed_git *p, struct pack_window **w_curs, off_t offset, off_t len, unsigned int nr); -int verify_pack_index(struct packed_git *); -int verify_pack(struct repository *, struct packed_git *, verify_fn fn, struct progress *, uint32_t); -off_t write_pack_header(struct hashfile *f, uint32_t); -void fixup_pack_header_footer(int, unsigned char *, const char *, uint32_t, unsigned char *, off_t); -char *index_pack_lockfile(int fd); - -/* - * The "hdr" output buffer should be at least this big, which will handle sizes - * up to 2^67. - */ -#define MAX_PACK_OBJECT_HEADER 10 -int encode_in_pack_object_header(unsigned char *hdr, int hdr_len, - enum object_type, uintmax_t); - -#define PH_ERROR_EOF (-1) -#define PH_ERROR_PACK_SIGNATURE (-2) -#define PH_ERROR_PROTOCOL (-3) -int read_pack_header(int fd, struct pack_header *); - -struct hashfile *create_tmp_packfile(char **pack_tmp_name); -void finish_tmp_packfile(struct strbuf *name_buffer, const char *pack_tmp_name, struct pack_idx_entry **written_list, uint32_t nr_written, struct pack_idx_option *pack_idx_opts, unsigned char sha1[]); - -#endif |