#include "sha1-array.h"
#include "repository.h"
-#ifndef platform_SHA_CTX
-/*
- * platform's underlying implementation of SHA-1; could be OpenSSL,
- * blk_SHA, Apple CommonCrypto, etc... Note that including
- * SHA1_HEADER may have already defined platform_SHA_CTX for our
- * own implementations like block-sha1 and ppc-sha1, so we list
- * the default for OpenSSL compatible SHA-1 implementations here.
- */
-#define platform_SHA_CTX SHA_CTX
-#define platform_SHA1_Init SHA1_Init
-#define platform_SHA1_Update SHA1_Update
-#define platform_SHA1_Final SHA1_Final
-#endif
-
-#define git_SHA_CTX platform_SHA_CTX
-#define git_SHA1_Init platform_SHA1_Init
-#define git_SHA1_Update platform_SHA1_Update
-#define git_SHA1_Final platform_SHA1_Final
-
-#ifdef SHA1_MAX_BLOCK_SIZE
-#include "compat/sha1-chunked.h"
-#undef git_SHA1_Update
-#define git_SHA1_Update git_SHA1_Update_Chunked
-#endif
-
#include <zlib.h>
typedef struct git_zstream {
z_stream z;
/* For use with `write_locked_index()`. */
#define COMMIT_LOCK (1 << 0)
+#define SKIP_IF_UNCHANGED (1 << 1)
/*
* Write the index while holding an already-taken lock. Close the lock,
* With `COMMIT_LOCK`, the lock is always committed or rolled back.
* Without it, the lock is closed, but neither committed nor rolled
* back.
+ *
+ * If `SKIP_IF_UNCHANGED` is given and the index is unchanged, nothing
+ * is written (and the lock is rolled back if `COMMIT_LOCK` is given).
*/
extern int write_locked_index(struct index_state *, struct lock_file *lock, unsigned flags);
* more calls to find_unique_abbrev are made.
*
* The `_r` variant writes to a buffer supplied by the caller, which must be at
- * least `GIT_SHA1_HEXSZ + 1` bytes. The return value is the number of bytes
+ * least `GIT_MAX_HEXSZ + 1` bytes. The return value is the number of bytes
* written (excluding the NUL terminator).
*
* Note that while this version avoids the static buffer, it is not fully
* reentrant, as it calls into other non-reentrant git code.
*/
-extern const char *find_unique_abbrev(const unsigned char *sha1, int len);
-extern int find_unique_abbrev_r(char *hex, const unsigned char *sha1, int len);
+extern const char *find_unique_abbrev(const struct object_id *oid, int len);
+extern int find_unique_abbrev_r(char *hex, const struct object_id *oid, int len);
extern const unsigned char null_sha1[GIT_MAX_RAWSZ];
extern const struct object_id null_oid;
static inline void oidclr(struct object_id *oid)
{
- hashclr(oid->hash);
+ memset(oid->hash, 0, GIT_MAX_RAWSZ);
}
"\xe6\x9d\xe2\x9b\xb2\xd1\xd6\x43\x4b\x8b" \
"\x29\xae\x77\x5a\xd8\xc2\xe4\x8c\x53\x91"
extern const struct object_id empty_blob_oid;
-#define EMPTY_BLOB_SHA1_BIN (empty_blob_oid.hash)
-
static inline int is_empty_blob_sha1(const unsigned char *sha1)
{
*/
extern char *xdg_cache_home(const char *filename);
-extern void *read_sha1_file_extended(const unsigned char *sha1,
- enum object_type *type,
- unsigned long *size, int lookup_replace);
-static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
-{
- return read_sha1_file_extended(sha1, type, size, 1);
-}
-
-/*
- * This internal function is only declared here for the benefit of
- * lookup_replace_object(). Please do not call it directly.
- */
-extern const unsigned char *do_lookup_replace_object(const unsigned char *sha1);
-
-/*
- * If object sha1 should be replaced, return the replacement object's
- * name (replaced recursively, if necessary). The return value is
- * either sha1 or a pointer to a permanently-allocated value. When
- * object replacement is suppressed, always return sha1.
- */
-static inline const unsigned char *lookup_replace_object(const unsigned char *sha1)
-{
- if (!check_replace_refs)
- return sha1;
- return do_lookup_replace_object(sha1);
-}
-
-/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
-extern int sha1_object_info(const unsigned char *, unsigned long *);
-extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
-extern int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
-extern int hash_sha1_file_literally(const void *buf, unsigned long len, const char *type, struct object_id *oid, unsigned flags);
-extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
-extern int force_object_loose(const unsigned char *sha1, time_t mtime);
extern int git_open_cloexec(const char *name, int flags);
#define git_open(name) git_open_cloexec(name, O_RDONLY)
extern int unpack_sha1_header(git_zstream *stream, unsigned char *map, unsigned long mapsize, void *buffer, unsigned long bufsiz);
extern int parse_sha1_header(const char *hdr, unsigned long *sizep);
-extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
+extern int check_object_signature(const struct object_id *oid, void *buf, unsigned long size, const char *type);
extern int finalize_object_file(const char *tmpfile, const char *filename);
-/*
- * Open the loose object at path, check its sha1, and return the contents,
- * type, and size. If the object is a blob, then "contents" may return NULL,
- * to allow streaming of large blobs.
- *
- * Returns 0 on success, negative on error (details may be written to stderr).
- */
-int read_loose_object(const char *path,
- const unsigned char *expected_sha1,
- enum object_type *type,
- unsigned long *size,
- void **contents);
-
-/*
- * Convenience for sha1_object_info_extended() with a NULL struct
- * object_info. OBJECT_INFO_SKIP_CACHED is automatically set; pass
- * nonzero flags to also set other flags.
- */
-extern int has_sha1_file_with_flags(const unsigned char *sha1, int flags);
-static inline int has_sha1_file(const unsigned char *sha1)
-{
- return has_sha1_file_with_flags(sha1, 0);
-}
-
-/* Same as the above, except for struct object_id. */
-extern int has_object_file(const struct object_id *oid);
-extern int has_object_file_with_flags(const struct object_id *oid, int flags);
-
-/*
- * Return true iff an alternate object database has a loose object
- * with the specified name. This function does not respect replace
- * references.
- */
-extern int has_loose_object_nonlocal(const unsigned char *sha1);
-
-extern void assert_sha1_type(const unsigned char *sha1, enum object_type expect);
-
/* Helper to check and "touch" a file */
extern int check_and_freshen_file(const char *fn, int freshen);
extern int name_compare(const char *name1, size_t len1, const char *name2, size_t len2);
extern int cache_name_stage_compare(const char *name1, int len1, int stage1, const char *name2, int len2, int stage2);
-extern void *read_object_with_reference(const unsigned char *sha1,
+extern void *read_object_with_reference(const struct object_id *oid,
const char *required_type,
unsigned long *size,
- unsigned char *sha1_ret);
+ struct object_id *oid_ret);
extern struct object *peel_to_type(const char *name, int namelen,
struct object *o, enum object_type);
* usual "XXXXXX" trailer, and the resulting filename is written into the
* "template" buffer. Returns the open descriptor.
*/
-extern int odb_mkstemp(struct strbuf *template, const char *pattern);
+extern int odb_mkstemp(struct strbuf *temp_filename, const char *pattern);
/*
* Create a pack .keep file named "name" (which should generally be the output
#define FOR_EACH_OBJECT_LOCAL_ONLY 0x1
extern int for_each_loose_object(each_loose_object_fn, void *, unsigned flags);
-struct object_info {
- /* Request */
- enum object_type *typep;
- unsigned long *sizep;
- off_t *disk_sizep;
- unsigned char *delta_base_sha1;
- struct strbuf *typename;
- void **contentp;
-
- /* Response */
- enum {
- OI_CACHED,
- OI_LOOSE,
- OI_PACKED,
- OI_DBCACHED
- } whence;
- union {
- /*
- * struct {
- * ... Nothing to expose in this case
- * } cached;
- * struct {
- * ... Nothing to expose in this case
- * } loose;
- */
- struct {
- struct packed_git *pack;
- off_t offset;
- unsigned int is_delta;
- } packed;
- } u;
-};
-
-/*
- * Initializer for a "struct object_info" that wants no items. You may
- * also memset() the memory to all-zeroes.
- */
-#define OBJECT_INFO_INIT {NULL}
-
-/* Invoke lookup_replace_object() on the given hash */
-#define OBJECT_INFO_LOOKUP_REPLACE 1
-/* Allow reading from a loose object file of unknown/bogus type */
-#define OBJECT_INFO_ALLOW_UNKNOWN_TYPE 2
-/* Do not check cached storage */
-#define OBJECT_INFO_SKIP_CACHED 4
-/* Do not retry packed storage after checking packed and loose storage */
-#define OBJECT_INFO_QUICK 8
-extern int sha1_object_info_extended(const unsigned char *, struct object_info *, unsigned flags);
-
/*
* Set this to 0 to prevent sha1_object_info_extended() from fetching missing
* blobs. This has a difference only if extensions.partialClone is set.
int decode_85(char *dst, const char *line, int linelen);
void encode_85(char *buf, const unsigned char *data, int bytes);
-/* alloc.c */
-extern void *alloc_blob_node(void);
-extern void *alloc_tree_node(void);
-extern void *alloc_commit_node(void);
-extern void *alloc_tag_node(void);
-extern void *alloc_object_node(void);
-extern void alloc_report(void);
-extern unsigned int alloc_commit_index(void);
-
/* pkt-line.c */
void packet_trace_identity(const char *prog);