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-rw-r--r--cache.h568
1 files changed, 333 insertions, 235 deletions
diff --git a/cache.h b/cache.h
index ca36b44ee0..bf20337ef4 100644
--- a/cache.h
+++ b/cache.h
@@ -9,6 +9,7 @@
#include "gettext.h"
#include "convert.h"
#include "trace.h"
+#include "trace2.h"
#include "string-list.h"
#include "pack-revindex.h"
#include "hash.h"
@@ -45,10 +46,20 @@ unsigned long git_deflate_bound(git_zstream *, unsigned long);
/* The length in bytes and in hex digits of an object name (SHA-1 value). */
#define GIT_SHA1_RAWSZ 20
#define GIT_SHA1_HEXSZ (2 * GIT_SHA1_RAWSZ)
+/* The block size of SHA-1. */
+#define GIT_SHA1_BLKSZ 64
+
+/* The length in bytes and in hex digits of an object name (SHA-256 value). */
+#define GIT_SHA256_RAWSZ 32
+#define GIT_SHA256_HEXSZ (2 * GIT_SHA256_RAWSZ)
+/* The block size of SHA-256. */
+#define GIT_SHA256_BLKSZ 64
/* The length in byte and in hex digits of the largest possible hash value. */
-#define GIT_MAX_RAWSZ GIT_SHA1_RAWSZ
-#define GIT_MAX_HEXSZ GIT_SHA1_HEXSZ
+#define GIT_MAX_RAWSZ GIT_SHA256_RAWSZ
+#define GIT_MAX_HEXSZ GIT_SHA256_HEXSZ
+/* The largest possible block size for any supported hash. */
+#define GIT_MAX_BLKSZ GIT_SHA256_BLKSZ
struct object_id {
unsigned char hash[GIT_MAX_RAWSZ];
@@ -328,7 +339,10 @@ struct index_state {
struct cache_time timestamp;
unsigned name_hash_initialized : 1,
initialized : 1,
- drop_cache_tree : 1;
+ drop_cache_tree : 1,
+ updated_workdir : 1,
+ updated_skipworktree : 1,
+ fsmonitor_has_run_once : 1;
struct hashmap name_hash;
struct hashmap dir_hash;
struct object_id oid;
@@ -338,13 +352,11 @@ struct index_state {
struct mem_pool *ce_mem_pool;
};
-extern struct index_state the_index;
-
/* Name hashing */
-extern int test_lazy_init_name_hash(struct index_state *istate, int try_threaded);
-extern void add_name_hash(struct index_state *istate, struct cache_entry *ce);
-extern void remove_name_hash(struct index_state *istate, struct cache_entry *ce);
-extern void free_name_hash(struct index_state *istate);
+int test_lazy_init_name_hash(struct index_state *istate, int try_threaded);
+void add_name_hash(struct index_state *istate, struct cache_entry *ce);
+void remove_name_hash(struct index_state *istate, struct cache_entry *ce);
+void free_name_hash(struct index_state *istate);
/* Cache entry creation and cleanup */
@@ -401,18 +413,20 @@ struct cache_entry *dup_cache_entry(const struct cache_entry *ce, struct index_s
*/
void validate_cache_entries(const struct index_state *istate);
-#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
+#ifdef USE_THE_INDEX_COMPATIBILITY_MACROS
+extern struct index_state the_index;
+
#define active_cache (the_index.cache)
#define active_nr (the_index.cache_nr)
#define active_alloc (the_index.cache_alloc)
#define active_cache_changed (the_index.cache_changed)
#define active_cache_tree (the_index.cache_tree)
-#define read_cache() read_index(&the_index)
+#define read_cache() repo_read_index(the_repository)
#define read_cache_from(path) read_index_from(&the_index, (path), (get_git_dir()))
-#define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec), 0)
+#define read_cache_preload(pathspec) repo_read_index_preload(the_repository, (pathspec), 0)
#define is_cache_unborn() is_index_unborn(&the_index)
-#define read_cache_unmerged() read_index_unmerged(&the_index)
+#define read_cache_unmerged() repo_read_index_unmerged(the_repository)
#define discard_cache() discard_index(&the_index)
#define unmerged_cache() unmerged_index(&the_index)
#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
@@ -433,6 +447,7 @@ void validate_cache_entries(const struct index_state *istate);
#define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
#define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
#define read_blob_data_from_cache(path, sz) read_blob_data_from_index(&the_index, (path), (sz))
+#define hold_locked_index(lock_file, flags) repo_hold_locked_index(the_repository, (lock_file), (flags))
#endif
#define TYPE_BITS 3
@@ -531,7 +546,7 @@ static inline enum object_type object_type(unsigned int mode)
*/
extern const char * const local_repo_env[];
-extern void setup_git_env(const char *git_dir);
+void setup_git_env(const char *git_dir);
/*
* Returns true iff we have a configured git repository (either via
@@ -540,29 +555,29 @@ extern void setup_git_env(const char *git_dir);
int have_git_dir(void);
extern int is_bare_repository_cfg;
-extern int is_bare_repository(void);
-extern int is_inside_git_dir(void);
+int is_bare_repository(void);
+int is_inside_git_dir(void);
extern char *git_work_tree_cfg;
-extern int is_inside_work_tree(void);
-extern const char *get_git_dir(void);
-extern const char *get_git_common_dir(void);
-extern char *get_object_directory(void);
-extern char *get_index_file(void);
-extern char *get_graft_file(struct repository *r);
-extern void set_git_dir(const char *path);
-extern int get_common_dir_noenv(struct strbuf *sb, const char *gitdir);
-extern int get_common_dir(struct strbuf *sb, const char *gitdir);
-extern const char *get_git_namespace(void);
-extern const char *strip_namespace(const char *namespaced_ref);
-extern const char *get_super_prefix(void);
-extern const char *get_git_work_tree(void);
+int is_inside_work_tree(void);
+const char *get_git_dir(void);
+const char *get_git_common_dir(void);
+char *get_object_directory(void);
+char *get_index_file(void);
+char *get_graft_file(struct repository *r);
+void set_git_dir(const char *path);
+int get_common_dir_noenv(struct strbuf *sb, const char *gitdir);
+int get_common_dir(struct strbuf *sb, const char *gitdir);
+const char *get_git_namespace(void);
+const char *strip_namespace(const char *namespaced_ref);
+const char *get_super_prefix(void);
+const char *get_git_work_tree(void);
/*
* Return true if the given path is a git directory; note that this _just_
* looks at the directory itself. If you want to know whether "foo/.git"
* is a repository, you must feed that path, not just "foo".
*/
-extern int is_git_directory(const char *path);
+int is_git_directory(const char *path);
/*
* Return 1 if the given path is the root of a git repository or
@@ -574,7 +589,7 @@ extern int is_git_directory(const char *path);
* as we usually consider sub-repos precious, and would prefer to err on the
* side of not disrupting or deleting them.
*/
-extern int is_nonbare_repository_dir(struct strbuf *path);
+int is_nonbare_repository_dir(struct strbuf *path);
#define READ_GITFILE_ERR_STAT_FAILED 1
#define READ_GITFILE_ERR_NOT_A_FILE 2
@@ -584,17 +599,17 @@ extern int is_nonbare_repository_dir(struct strbuf *path);
#define READ_GITFILE_ERR_NO_PATH 6
#define READ_GITFILE_ERR_NOT_A_REPO 7
#define READ_GITFILE_ERR_TOO_LARGE 8
-extern void read_gitfile_error_die(int error_code, const char *path, const char *dir);
-extern const char *read_gitfile_gently(const char *path, int *return_error_code);
+void read_gitfile_error_die(int error_code, const char *path, const char *dir);
+const char *read_gitfile_gently(const char *path, int *return_error_code);
#define read_gitfile(path) read_gitfile_gently((path), NULL)
-extern const char *resolve_gitdir_gently(const char *suspect, int *return_error_code);
+const char *resolve_gitdir_gently(const char *suspect, int *return_error_code);
#define resolve_gitdir(path) resolve_gitdir_gently((path), NULL)
-extern void set_git_work_tree(const char *tree);
+void set_git_work_tree(const char *tree);
#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
-extern void setup_work_tree(void);
+void setup_work_tree(void);
/*
* Find the commondir and gitdir of the repository that contains the current
* working directory, without changing the working directory or other global
@@ -603,12 +618,12 @@ extern void setup_work_tree(void);
* both have the same result appended to the buffer. The return value is
* either 0 upon success and non-zero if no repository was found.
*/
-extern int discover_git_directory(struct strbuf *commondir,
- struct strbuf *gitdir);
-extern const char *setup_git_directory_gently(int *);
-extern const char *setup_git_directory(void);
-extern char *prefix_path(const char *prefix, int len, const char *path);
-extern char *prefix_path_gently(const char *prefix, int len, int *remaining, const char *path);
+int discover_git_directory(struct strbuf *commondir,
+ struct strbuf *gitdir);
+const char *setup_git_directory_gently(int *);
+const char *setup_git_directory(void);
+char *prefix_path(const char *prefix, int len, const char *path);
+char *prefix_path_gently(const char *prefix, int len, int *remaining, const char *path);
/*
* Concatenate "prefix" (if len is non-zero) and "path", with no
@@ -620,23 +635,23 @@ extern char *prefix_path_gently(const char *prefix, int len, int *remaining, con
* The return value is always a newly allocated string (even if the
* prefix was empty).
*/
-extern char *prefix_filename(const char *prefix, const char *path);
+char *prefix_filename(const char *prefix, const char *path);
-extern int check_filename(const char *prefix, const char *name);
-extern void verify_filename(const char *prefix,
- const char *name,
- int diagnose_misspelt_rev);
-extern void verify_non_filename(const char *prefix, const char *name);
-extern int path_inside_repo(const char *prefix, const char *path);
+int check_filename(const char *prefix, const char *name);
+void verify_filename(const char *prefix,
+ const char *name,
+ int diagnose_misspelt_rev);
+void verify_non_filename(const char *prefix, const char *name);
+int path_inside_repo(const char *prefix, const char *path);
#define INIT_DB_QUIET 0x0001
#define INIT_DB_EXIST_OK 0x0002
-extern int init_db(const char *git_dir, const char *real_git_dir,
- const char *template_dir, unsigned int flags);
+int init_db(const char *git_dir, const char *real_git_dir,
+ const char *template_dir, unsigned int flags);
-extern void sanitize_stdfds(void);
-extern int daemonize(void);
+void sanitize_stdfds(void);
+int daemonize(void);
#define alloc_nr(x) (((x)+16)*3/2)
@@ -660,19 +675,14 @@ extern int daemonize(void);
/* Initialize and use the cache information */
struct lock_file;
-extern int read_index(struct index_state *);
-extern void preload_index(struct index_state *index,
- const struct pathspec *pathspec,
- unsigned int refresh_flags);
-extern int read_index_preload(struct index_state *,
- const struct pathspec *pathspec,
- unsigned int refresh_flags);
-extern int do_read_index(struct index_state *istate, const char *path,
- int must_exist); /* for testting only! */
-extern int read_index_from(struct index_state *, const char *path,
- const char *gitdir);
-extern int is_index_unborn(struct index_state *);
-extern int read_index_unmerged(struct index_state *);
+void preload_index(struct index_state *index,
+ const struct pathspec *pathspec,
+ unsigned int refresh_flags);
+int do_read_index(struct index_state *istate, const char *path,
+ int must_exist); /* for testting only! */
+int read_index_from(struct index_state *, const char *path,
+ const char *gitdir);
+int is_index_unborn(struct index_state *);
/* For use with `write_locked_index()`. */
#define COMMIT_LOCK (1 << 0)
@@ -697,11 +707,11 @@ extern int read_index_unmerged(struct index_state *);
* 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);
+int write_locked_index(struct index_state *, struct lock_file *lock, unsigned flags);
-extern int discard_index(struct index_state *);
-extern void move_index_extensions(struct index_state *dst, struct index_state *src);
-extern int unmerged_index(const struct index_state *);
+int discard_index(struct index_state *);
+void move_index_extensions(struct index_state *dst, struct index_state *src);
+int unmerged_index(const struct index_state *);
/**
* Returns 1 if istate differs from tree, 0 otherwise. If tree is NULL,
@@ -710,15 +720,15 @@ extern int unmerged_index(const struct index_state *);
* provided, the space-separated list of files that differ will be appended
* to it.
*/
-extern int index_has_changes(struct index_state *istate,
- struct tree *tree,
- struct strbuf *sb);
+int repo_index_has_changes(struct repository *repo,
+ struct tree *tree,
+ struct strbuf *sb);
-extern int verify_path(const char *path, unsigned mode);
-extern int strcmp_offset(const char *s1, const char *s2, size_t *first_change);
-extern int index_dir_exists(struct index_state *istate, const char *name, int namelen);
-extern void adjust_dirname_case(struct index_state *istate, char *name);
-extern struct cache_entry *index_file_exists(struct index_state *istate, const char *name, int namelen, int igncase);
+int verify_path(const char *path, unsigned mode);
+int strcmp_offset(const char *s1, const char *s2, size_t *first_change);
+int index_dir_exists(struct index_state *istate, const char *name, int namelen);
+void adjust_dirname_case(struct index_state *istate, char *name);
+struct cache_entry *index_file_exists(struct index_state *istate, const char *name, int namelen, int igncase);
/*
* Searches for an entry defined by name and namelen in the given index.
@@ -737,7 +747,7 @@ extern struct cache_entry *index_file_exists(struct index_state *istate, const c
* index_name_pos(&index, "f", 1) -> -3
* index_name_pos(&index, "g", 1) -> -5
*/
-extern int index_name_pos(const struct index_state *, const char *name, int namelen);
+int index_name_pos(const struct index_state *, const char *name, int namelen);
#define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
#define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
@@ -745,14 +755,15 @@ extern int index_name_pos(const struct index_state *, const char *name, int name
#define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
#define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */
#define ADD_CACHE_KEEP_CACHE_TREE 32 /* Do not invalidate cache-tree */
-extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
-extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name);
+#define ADD_CACHE_RENORMALIZE 64 /* Pass along HASH_RENORMALIZE */
+int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
+void rename_index_entry_at(struct index_state *, int pos, const char *new_name);
/* Remove entry, return true if there are more entries to go. */
-extern int remove_index_entry_at(struct index_state *, int pos);
+int remove_index_entry_at(struct index_state *, int pos);
-extern void remove_marked_cache_entries(struct index_state *istate);
-extern int remove_file_from_index(struct index_state *, const char *path);
+void remove_marked_cache_entries(struct index_state *istate, int invalidate);
+int remove_file_from_index(struct index_state *, const char *path);
#define ADD_CACHE_VERBOSE 1
#define ADD_CACHE_PRETEND 2
#define ADD_CACHE_IGNORE_ERRORS 4
@@ -767,14 +778,14 @@ extern int remove_file_from_index(struct index_state *, const char *path);
* the latter will do necessary lstat(2) internally before
* calling the former.
*/
-extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
-extern int add_file_to_index(struct index_state *, const char *path, int flags);
+int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
+int add_file_to_index(struct index_state *, const char *path, int flags);
-extern int chmod_index_entry(struct index_state *, struct cache_entry *ce, char flip);
-extern int ce_same_name(const struct cache_entry *a, const struct cache_entry *b);
-extern void set_object_name_for_intent_to_add_entry(struct cache_entry *ce);
-extern int index_name_is_other(const struct index_state *, const char *, int);
-extern void *read_blob_data_from_index(const struct index_state *, const char *, unsigned long *);
+int chmod_index_entry(struct index_state *, struct cache_entry *ce, char flip);
+int ce_same_name(const struct cache_entry *a, const struct cache_entry *b);
+void set_object_name_for_intent_to_add_entry(struct cache_entry *ce);
+int index_name_is_other(const struct index_state *, const char *, int);
+void *read_blob_data_from_index(const struct index_state *, const char *, unsigned long *);
/* do stat comparison even if CE_VALID is true */
#define CE_MATCH_IGNORE_VALID 01
@@ -788,22 +799,22 @@ extern void *read_blob_data_from_index(const struct index_state *, const char *,
#define CE_MATCH_REFRESH 0x10
/* don't refresh_fsmonitor state or do stat comparison even if CE_FSMONITOR_VALID is true */
#define CE_MATCH_IGNORE_FSMONITOR 0X20
-extern int is_racy_timestamp(const struct index_state *istate,
- const struct cache_entry *ce);
-extern int ie_match_stat(struct index_state *, const struct cache_entry *, struct stat *, unsigned int);
-extern int ie_modified(struct index_state *, const struct cache_entry *, struct stat *, unsigned int);
+int is_racy_timestamp(const struct index_state *istate,
+ const struct cache_entry *ce);
+int ie_match_stat(struct index_state *, const struct cache_entry *, struct stat *, unsigned int);
+int ie_modified(struct index_state *, const struct cache_entry *, struct stat *, unsigned int);
#define HASH_WRITE_OBJECT 1
#define HASH_FORMAT_CHECK 2
#define HASH_RENORMALIZE 4
-extern int index_fd(struct index_state *istate, struct object_id *oid, int fd, struct stat *st, enum object_type type, const char *path, unsigned flags);
-extern int index_path(struct index_state *istate, struct object_id *oid, const char *path, struct stat *st, unsigned flags);
+int index_fd(struct index_state *istate, struct object_id *oid, int fd, struct stat *st, enum object_type type, const char *path, unsigned flags);
+int index_path(struct index_state *istate, struct object_id *oid, const char *path, struct stat *st, unsigned flags);
/*
* Record to sd the data from st that we use to check whether a file
* might have changed.
*/
-extern void fill_stat_data(struct stat_data *sd, struct stat *st);
+void fill_stat_data(struct stat_data *sd, struct stat *st);
/*
* Return 0 if st is consistent with a file not having been changed
@@ -811,11 +822,11 @@ extern void fill_stat_data(struct stat_data *sd, struct stat *st);
* combination of MTIME_CHANGED, CTIME_CHANGED, OWNER_CHANGED,
* INODE_CHANGED, and DATA_CHANGED.
*/
-extern int match_stat_data(const struct stat_data *sd, struct stat *st);
-extern int match_stat_data_racy(const struct index_state *istate,
- const struct stat_data *sd, struct stat *st);
+int match_stat_data(const struct stat_data *sd, struct stat *st);
+int match_stat_data_racy(const struct index_state *istate,
+ const struct stat_data *sd, struct stat *st);
-extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
+void fill_stat_cache_info(struct index_state *istate, struct cache_entry *ce, struct stat *st);
#define REFRESH_REALLY 0x0001 /* ignore_valid */
#define REFRESH_UNMERGED 0x0002 /* allow unmerged */
@@ -824,17 +835,10 @@ extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
#define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */
#define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */
#define REFRESH_PROGRESS 0x0040 /* show progress bar if stderr is tty */
-extern int refresh_index(struct index_state *, unsigned int flags, const struct pathspec *pathspec, char *seen, const char *header_msg);
-extern struct cache_entry *refresh_cache_entry(struct index_state *, struct cache_entry *, unsigned int);
-
-/*
- * Opportunistically update the index but do not complain if we can't.
- * The lockfile is always committed or rolled back.
- */
-extern void update_index_if_able(struct index_state *, struct lock_file *);
+int refresh_index(struct index_state *, unsigned int flags, const struct pathspec *pathspec, char *seen, const char *header_msg);
+struct cache_entry *refresh_cache_entry(struct index_state *, struct cache_entry *, unsigned int);
-extern int hold_locked_index(struct lock_file *, int);
-extern void set_alternate_index_output(const char *);
+void set_alternate_index_output(const char *);
extern int verify_index_checksum;
extern int verify_ce_order;
@@ -961,6 +965,10 @@ extern char *repository_format_partial_clone;
extern const char *core_partial_clone_filter_default;
extern int repository_format_worktree_config;
+/*
+ * You _have_ to initialize a `struct repository_format` using
+ * `= REPOSITORY_FORMAT_INIT` before calling `read_repository_format()`.
+ */
struct repository_format {
int version;
int precious_objects;
@@ -973,14 +981,35 @@ struct repository_format {
};
/*
+ * Always use this to initialize a `struct repository_format`
+ * to a well-defined, default state before calling
+ * `read_repository()`.
+ */
+#define REPOSITORY_FORMAT_INIT \
+{ \
+ .version = -1, \
+ .is_bare = -1, \
+ .hash_algo = GIT_HASH_SHA1, \
+ .unknown_extensions = STRING_LIST_INIT_DUP, \
+}
+
+/*
* Read the repository format characteristics from the config file "path" into
- * "format" struct. Returns the numeric version. On error, -1 is returned,
- * format->version is set to -1, and all other fields in the struct are
- * undefined.
+ * "format" struct. Returns the numeric version. On error, or if no version is
+ * found in the configuration, -1 is returned, format->version is set to -1,
+ * and all other fields in the struct are set to the default configuration
+ * (REPOSITORY_FORMAT_INIT). Always initialize the struct using
+ * REPOSITORY_FORMAT_INIT before calling this function.
*/
int read_repository_format(struct repository_format *format, const char *path);
/*
+ * Free the memory held onto by `format`, but not the struct itself.
+ * (No need to use this after `read_repository_format()` fails.)
+ */
+void clear_repository_format(struct repository_format *format);
+
+/*
* Verify that the repository described by repository_format is something we
* can read. If it is, return 0. Otherwise, return -1, and "err" will describe
* any errors encountered.
@@ -994,7 +1023,7 @@ int verify_repository_format(const struct repository_format *format,
* set_git_dir() before calling this, and use it only for "are we in a valid
* repo?".
*/
-extern void check_repository_format(void);
+void check_repository_format(void);
#define MTIME_CHANGED 0x0001
#define CTIME_CHANGED 0x0002
@@ -1019,8 +1048,10 @@ extern void check_repository_format(void);
* 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 struct object_id *oid, int len);
-extern int find_unique_abbrev_r(char *hex, const struct object_id *oid, int len);
+const char *repo_find_unique_abbrev(struct repository *r, const struct object_id *oid, int len);
+#define find_unique_abbrev(oid, len) repo_find_unique_abbrev(the_repository, oid, len)
+int repo_find_unique_abbrev_r(struct repository *r, char *hex, const struct object_id *oid, int len);
+#define find_unique_abbrev_r(hex, oid, len) repo_find_unique_abbrev_r(the_repository, hex, oid, len)
extern const unsigned char null_sha1[GIT_MAX_RAWSZ];
extern const struct object_id null_oid;
@@ -1028,16 +1059,12 @@ extern const struct object_id null_oid;
static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
{
/*
- * This is a temporary optimization hack. By asserting the size here,
- * we let the compiler know that it's always going to be 20, which lets
- * it turn this fixed-size memcmp into a few inline instructions.
- *
- * This will need to be extended or ripped out when we learn about
- * hashes of different sizes.
+ * Teach the compiler that there are only two possibilities of hash size
+ * here, so that it can optimize for this case as much as possible.
*/
- if (the_hash_algo->rawsz != 20)
- BUG("hash size not yet supported by hashcmp");
- return memcmp(sha1, sha2, the_hash_algo->rawsz);
+ if (the_hash_algo->rawsz == GIT_MAX_RAWSZ)
+ return memcmp(sha1, sha2, GIT_MAX_RAWSZ);
+ return memcmp(sha1, sha2, GIT_SHA1_RAWSZ);
}
static inline int oidcmp(const struct object_id *oid1, const struct object_id *oid2)
@@ -1047,7 +1074,13 @@ static inline int oidcmp(const struct object_id *oid1, const struct object_id *o
static inline int hasheq(const unsigned char *sha1, const unsigned char *sha2)
{
- return !hashcmp(sha1, sha2);
+ /*
+ * We write this here instead of deferring to hashcmp so that the
+ * compiler can properly inline it and avoid calling memcmp.
+ */
+ if (the_hash_algo->rawsz == GIT_MAX_RAWSZ)
+ return !memcmp(sha1, sha2, GIT_MAX_RAWSZ);
+ return !memcmp(sha1, sha2, GIT_SHA1_RAWSZ);
}
static inline int oideq(const struct object_id *oid1, const struct object_id *oid2)
@@ -1072,7 +1105,7 @@ static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
static inline void oidcpy(struct object_id *dst, const struct object_id *src)
{
- hashcpy(dst->hash, src->hash);
+ memcpy(dst->hash, src->hash, GIT_MAX_RAWSZ);
}
static inline struct object_id *oiddup(const struct object_id *src)
@@ -1214,7 +1247,7 @@ typedef int create_file_fn(const char *path, void *cb);
int raceproof_create_file(const char *path, create_file_fn fn, void *cb);
int mkdir_in_gitdir(const char *path);
-extern char *expand_user_path(const char *path, int real_home);
+char *expand_user_path(const char *path, int real_home);
const char *enter_repo(const char *path, int strict);
static inline int is_absolute_path(const char *path)
{
@@ -1258,26 +1291,26 @@ int looks_like_command_line_option(const char *str);
* "$XDG_CONFIG_HOME/git/$filename" if $XDG_CONFIG_HOME is non-empty, otherwise
* "$HOME/.config/git/$filename". Return NULL upon error.
*/
-extern char *xdg_config_home(const char *filename);
+char *xdg_config_home(const char *filename);
/**
* Return a newly allocated string with the evaluation of
* "$XDG_CACHE_HOME/git/$filename" if $XDG_CACHE_HOME is non-empty, otherwise
* "$HOME/.cache/git/$filename". Return NULL upon error.
*/
-extern char *xdg_cache_home(const char *filename);
+char *xdg_cache_home(const char *filename);
-extern int git_open_cloexec(const char *name, int flags);
+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);
+int unpack_loose_header(git_zstream *stream, unsigned char *map, unsigned long mapsize, void *buffer, unsigned long bufsiz);
+int parse_loose_header(const char *hdr, unsigned long *sizep);
-extern int check_object_signature(const struct object_id *oid, void *buf, unsigned long size, const char *type);
+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);
+int finalize_object_file(const char *tmpfile, const char *filename);
/* Helper to check and "touch" a file */
-extern int check_and_freshen_file(const char *fn, int freshen);
+int check_and_freshen_file(const char *fn, int freshen);
extern const signed char hexval_table[256];
static inline unsigned int hexval(unsigned char c)
@@ -1303,7 +1336,7 @@ static inline int hex2chr(const char *s)
#define FALLBACK_DEFAULT_ABBREV 7
struct object_context {
- unsigned mode;
+ unsigned short mode;
/*
* symlink_path is only used by get_tree_entry_follow_symlinks,
* and only for symlinks that point outside the repository.
@@ -1332,20 +1365,52 @@ struct object_context {
GET_OID_TREE | GET_OID_TREEISH | \
GET_OID_BLOB)
-extern int get_oid(const char *str, struct object_id *oid);
-extern int get_oid_commit(const char *str, struct object_id *oid);
-extern int get_oid_committish(const char *str, struct object_id *oid);
-extern int get_oid_tree(const char *str, struct object_id *oid);
-extern int get_oid_treeish(const char *str, struct object_id *oid);
-extern int get_oid_blob(const char *str, struct object_id *oid);
-extern void maybe_die_on_misspelt_object_name(const char *name, const char *prefix);
-extern int get_oid_with_context(const char *str, unsigned flags, struct object_id *oid, struct object_context *oc);
+enum get_oid_result {
+ FOUND = 0,
+ MISSING_OBJECT = -1, /* The requested object is missing */
+ SHORT_NAME_AMBIGUOUS = -2,
+ /* The following only apply when symlinks are followed */
+ DANGLING_SYMLINK = -4, /*
+ * The initial symlink is there, but
+ * (transitively) points to a missing
+ * in-tree file
+ */
+ SYMLINK_LOOP = -5,
+ NOT_DIR = -6, /*
+ * Somewhere along the symlink chain, a path is
+ * requested which contains a file as a
+ * non-final element.
+ */
+};
+int repo_get_oid(struct repository *r, const char *str, struct object_id *oid);
+int get_oidf(struct object_id *oid, const char *fmt, ...);
+int repo_get_oid_commit(struct repository *r, const char *str, struct object_id *oid);
+int repo_get_oid_committish(struct repository *r, const char *str, struct object_id *oid);
+int repo_get_oid_tree(struct repository *r, const char *str, struct object_id *oid);
+int repo_get_oid_treeish(struct repository *r, const char *str, struct object_id *oid);
+int repo_get_oid_blob(struct repository *r, const char *str, struct object_id *oid);
+int repo_get_oid_mb(struct repository *r, const char *str, struct object_id *oid);
+void maybe_die_on_misspelt_object_name(struct repository *repo,
+ const char *name,
+ const char *prefix);
+enum get_oid_result get_oid_with_context(struct repository *repo, const char *str,
+ unsigned flags, struct object_id *oid,
+ struct object_context *oc);
+
+#define get_oid(str, oid) repo_get_oid(the_repository, str, oid)
+#define get_oid_commit(str, oid) repo_get_oid_commit(the_repository, str, oid)
+#define get_oid_committish(str, oid) repo_get_oid_committish(the_repository, str, oid)
+#define get_oid_tree(str, oid) repo_get_oid_tree(the_repository, str, oid)
+#define get_oid_treeish(str, oid) repo_get_oid_treeish(the_repository, str, oid)
+#define get_oid_blob(str, oid) repo_get_oid_blob(the_repository, str, oid)
+#define get_oid_mb(str, oid) repo_get_oid_mb(the_repository, str, oid)
typedef int each_abbrev_fn(const struct object_id *oid, void *);
-extern int for_each_abbrev(const char *prefix, each_abbrev_fn, void *);
+int repo_for_each_abbrev(struct repository *r, const char *prefix, each_abbrev_fn, void *);
+#define for_each_abbrev(prefix, fn, data) repo_for_each_abbrev(the_repository, prefix, fn, data)
-extern int set_disambiguate_hint_config(const char *var, const char *value);
+int set_disambiguate_hint_config(const char *var, const char *value);
/*
* Try to read a SHA1 in hexadecimal format from the 40 characters
@@ -1354,20 +1419,20 @@ extern int set_disambiguate_hint_config(const char *var, const char *value);
* input, so it is safe to pass this function an arbitrary
* null-terminated string.
*/
-extern int get_sha1_hex(const char *hex, unsigned char *sha1);
-extern int get_oid_hex(const char *hex, struct object_id *sha1);
+int get_sha1_hex(const char *hex, unsigned char *sha1);
+int get_oid_hex(const char *hex, struct object_id *sha1);
/*
* Read `len` pairs of hexadecimal digits from `hex` and write the
* values to `binary` as `len` bytes. Return 0 on success, or -1 if
* the input does not consist of hex digits).
*/
-extern int hex_to_bytes(unsigned char *binary, const char *hex, size_t len);
+int hex_to_bytes(unsigned char *binary, const char *hex, size_t len);
/*
- * Convert a binary sha1 to its hex equivalent. The `_r` variant is reentrant,
+ * Convert a binary hash to its hex equivalent. The `_r` variant is reentrant,
* and writes the NUL-terminated output to the buffer `out`, which must be at
- * least `GIT_SHA1_HEXSZ + 1` bytes, and returns a pointer to out for
+ * least `GIT_MAX_HEXSZ + 1` bytes, and returns a pointer to out for
* convenience.
*
* The non-`_r` variant returns a static buffer, but uses a ring of 4
@@ -1375,10 +1440,13 @@ extern int hex_to_bytes(unsigned char *binary, const char *hex, size_t len);
*
* printf("%s -> %s", sha1_to_hex(one), sha1_to_hex(two));
*/
-extern char *sha1_to_hex_r(char *out, const unsigned char *sha1);
-extern char *oid_to_hex_r(char *out, const struct object_id *oid);
-extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
-extern char *oid_to_hex(const struct object_id *oid); /* same static buffer as sha1_to_hex */
+char *hash_to_hex_algop_r(char *buffer, const unsigned char *hash, const struct git_hash_algo *);
+char *sha1_to_hex_r(char *out, const unsigned char *sha1);
+char *oid_to_hex_r(char *out, const struct object_id *oid);
+char *hash_to_hex_algop(const unsigned char *hash, const struct git_hash_algo *); /* static buffer result! */
+char *sha1_to_hex(const unsigned char *sha1); /* same static buffer */
+char *hash_to_hex(const unsigned char *hash); /* same static buffer */
+char *oid_to_hex(const struct object_id *oid); /* same static buffer */
/*
* Parse a 40-character hexadecimal object ID starting from hex, updating the
@@ -1387,7 +1455,7 @@ extern char *oid_to_hex(const struct object_id *oid); /* same static buffer as s
* other invalid character. end is only updated on success; otherwise, it is
* unmodified.
*/
-extern int parse_oid_hex(const char *hex, struct object_id *oid, const char **end);
+int parse_oid_hex(const char *hex, struct object_id *oid, const char **end);
/*
* This reads short-hand syntax that not only evaluates to a commit
@@ -1418,27 +1486,34 @@ extern int parse_oid_hex(const char *hex, struct object_id *oid, const char **en
#define INTERPRET_BRANCH_LOCAL (1<<0)
#define INTERPRET_BRANCH_REMOTE (1<<1)
#define INTERPRET_BRANCH_HEAD (1<<2)
-extern int interpret_branch_name(const char *str, int len, struct strbuf *,
- unsigned allowed);
-extern int get_oid_mb(const char *str, struct object_id *oid);
-
-extern int validate_headref(const char *ref);
-
-extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
-extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
-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 struct object_id *oid,
- const char *required_type,
- unsigned long *size,
- struct object_id *oid_ret);
-
-extern struct object *peel_to_type(const char *name, int namelen,
- struct object *o, enum object_type);
+int repo_interpret_branch_name(struct repository *r,
+ const char *str, int len,
+ struct strbuf *buf,
+ unsigned allowed);
+#define interpret_branch_name(str, len, buf, allowed) \
+ repo_interpret_branch_name(the_repository, str, len, buf, allowed)
+
+int validate_headref(const char *ref);
+
+int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
+int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
+int name_compare(const char *name1, size_t len1, const char *name2, size_t len2);
+int cache_name_stage_compare(const char *name1, int len1, int stage1, const char *name2, int len2, int stage2);
+
+void *read_object_with_reference(const struct object_id *oid,
+ const char *required_type,
+ unsigned long *size,
+ struct object_id *oid_ret);
+
+struct object *repo_peel_to_type(struct repository *r,
+ const char *name, int namelen,
+ struct object *o, enum object_type);
+#define peel_to_type(name, namelen, obj, type) \
+ repo_peel_to_type(the_repository, name, namelen, obj, type)
enum date_mode_type {
DATE_NORMAL = 0,
+ DATE_HUMAN,
DATE_RELATIVE,
DATE_SHORT,
DATE_ISO8601,
@@ -1464,7 +1539,9 @@ struct date_mode {
struct date_mode *date_mode_from_type(enum date_mode_type type);
const char *show_date(timestamp_t time, int timezone, const struct date_mode *mode);
-void show_date_relative(timestamp_t time, int tz, const struct timeval *now,
+void show_date_relative(timestamp_t time, const struct timeval *now,
+ struct strbuf *timebuf);
+void show_date_human(timestamp_t time, int tz, const struct timeval *now,
struct strbuf *timebuf);
int parse_date(const char *date, struct strbuf *out);
int parse_date_basic(const char *date, timestamp_t *timestamp, int *offset);
@@ -1479,18 +1556,31 @@ int date_overflows(timestamp_t date);
#define IDENT_STRICT 1
#define IDENT_NO_DATE 2
#define IDENT_NO_NAME 4
-extern const char *git_author_info(int);
-extern const char *git_committer_info(int);
-extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
-extern const char *fmt_name(const char *name, const char *email);
-extern const char *ident_default_name(void);
-extern const char *ident_default_email(void);
-extern const char *git_editor(void);
-extern const char *git_sequence_editor(void);
-extern const char *git_pager(int stdout_is_tty);
-extern int is_terminal_dumb(void);
-extern int git_ident_config(const char *, const char *, void *);
-extern void reset_ident_date(void);
+
+enum want_ident {
+ WANT_BLANK_IDENT,
+ WANT_AUTHOR_IDENT,
+ WANT_COMMITTER_IDENT
+};
+
+const char *git_author_info(int);
+const char *git_committer_info(int);
+const char *fmt_ident(const char *name, const char *email,
+ enum want_ident whose_ident,
+ const char *date_str, int);
+const char *fmt_name(enum want_ident);
+const char *ident_default_name(void);
+const char *ident_default_email(void);
+const char *git_editor(void);
+const char *git_sequence_editor(void);
+const char *git_pager(int stdout_is_tty);
+int is_terminal_dumb(void);
+int git_ident_config(const char *, const char *, void *);
+/*
+ * Prepare an ident to fall back on if the user didn't configure it.
+ */
+void prepare_fallback_ident(const char *name, const char *email);
+void reset_ident_date(void);
struct ident_split {
const char *name_begin;
@@ -1506,7 +1596,7 @@ struct ident_split {
* Signals an success with 0, but time part of the result may be NULL
* if the input lacks timestamp and zone
*/
-extern int split_ident_line(struct ident_split *, const char *, int);
+int split_ident_line(struct ident_split *, const char *, int);
/*
* Like show_date, but pull the timestamp and tz parameters from
@@ -1523,7 +1613,7 @@ const char *show_ident_date(const struct ident_split *id,
* Because there are two fields, we must choose one as the primary key; we
* currently arbitrarily pick the email.
*/
-extern int ident_cmp(const struct ident_split *, const struct ident_split *);
+int ident_cmp(const struct ident_split *, const struct ident_split *);
struct checkout {
struct index_state *istate;
@@ -1539,9 +1629,14 @@ struct checkout {
#define CHECKOUT_INIT { NULL, "" }
#define TEMPORARY_FILENAME_LENGTH 25
-extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
-extern void enable_delayed_checkout(struct checkout *state);
-extern int finish_delayed_checkout(struct checkout *state);
+int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath, int *nr_checkouts);
+void enable_delayed_checkout(struct checkout *state);
+int finish_delayed_checkout(struct checkout *state, int *nr_checkouts);
+/*
+ * Unlink the last component and schedule the leading directories for
+ * removal, such that empty directories get removed.
+ */
+void unlink_entry(const struct cache_entry *ce);
struct cache_def {
struct strbuf path;
@@ -1555,12 +1650,12 @@ static inline void cache_def_clear(struct cache_def *cache)
strbuf_release(&cache->path);
}
-extern int has_symlink_leading_path(const char *name, int len);
-extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int);
-extern int check_leading_path(const char *name, int len);
-extern int has_dirs_only_path(const char *name, int len, int prefix_len);
-extern void schedule_dir_for_removal(const char *name, int len);
-extern void remove_scheduled_dirs(void);
+int has_symlink_leading_path(const char *name, int len);
+int threaded_has_symlink_leading_path(struct cache_def *, const char *, int);
+int check_leading_path(const char *name, int len);
+int has_dirs_only_path(const char *name, int len, int prefix_len);
+void schedule_dir_for_removal(const char *name, int len);
+void remove_scheduled_dirs(void);
struct pack_window {
struct pack_window *next;
@@ -1582,17 +1677,17 @@ struct pack_entry {
* usual "XXXXXX" trailer, and the resulting filename is written into the
* "template" buffer. Returns the open descriptor.
*/
-extern int odb_mkstemp(struct strbuf *temp_filename, const char *pattern);
+int odb_mkstemp(struct strbuf *temp_filename, const char *pattern);
/*
* Create a pack .keep file named "name" (which should generally be the output
* of odb_pack_name). Returns a file descriptor opened for writing, or -1 on
* error.
*/
-extern int odb_pack_keep(const char *name);
+int odb_pack_keep(const char *name);
/*
- * Set this to 0 to prevent sha1_object_info_extended() from fetching missing
+ * Set this to 0 to prevent oid_object_info_extended() from fetching missing
* blobs. This has a difference only if extensions.partialClone is set.
*
* Its default value is 1.
@@ -1600,10 +1695,10 @@ extern int odb_pack_keep(const char *name);
extern int fetch_if_missing;
/* Dumb servers support */
-extern int update_server_info(int);
+int update_server_info(int);
-extern const char *get_log_output_encoding(void);
-extern const char *get_commit_output_encoding(void);
+const char *get_log_output_encoding(void);
+const char *get_commit_output_encoding(void);
/*
* This is a hack for test programs like test-dump-untracked-cache to
@@ -1612,8 +1707,8 @@ extern const char *get_commit_output_encoding(void);
*/
extern int ignore_untracked_cache_config;
-extern int committer_ident_sufficiently_given(void);
-extern int author_ident_sufficiently_given(void);
+int committer_ident_sufficiently_given(void);
+int author_ident_sufficiently_given(void);
extern const char *git_commit_encoding;
extern const char *git_log_output_encoding;
@@ -1621,22 +1716,22 @@ extern const char *git_mailmap_file;
extern const char *git_mailmap_blob;
/* IO helper functions */
-extern void maybe_flush_or_die(FILE *, const char *);
+void maybe_flush_or_die(FILE *, const char *);
__attribute__((format (printf, 2, 3)))
-extern void fprintf_or_die(FILE *, const char *fmt, ...);
+void fprintf_or_die(FILE *, const char *fmt, ...);
#define COPY_READ_ERROR (-2)
#define COPY_WRITE_ERROR (-3)
-extern int copy_fd(int ifd, int ofd);
-extern int copy_file(const char *dst, const char *src, int mode);
-extern int copy_file_with_time(const char *dst, const char *src, int mode);
+int copy_fd(int ifd, int ofd);
+int copy_file(const char *dst, const char *src, int mode);
+int copy_file_with_time(const char *dst, const char *src, int mode);
-extern void write_or_die(int fd, const void *buf, size_t count);
-extern void fsync_or_die(int fd, const char *);
+void write_or_die(int fd, const void *buf, size_t count);
+void fsync_or_die(int fd, const char *);
-extern ssize_t read_in_full(int fd, void *buf, size_t count);
-extern ssize_t write_in_full(int fd, const void *buf, size_t count);
-extern ssize_t pread_in_full(int fd, void *buf, size_t count, off_t offset);
+ssize_t read_in_full(int fd, void *buf, size_t count);
+ssize_t write_in_full(int fd, const void *buf, size_t count);
+ssize_t pread_in_full(int fd, void *buf, size_t count, off_t offset);
static inline ssize_t write_str_in_full(int fd, const char *str)
{
@@ -1647,7 +1742,7 @@ static inline ssize_t write_str_in_full(int fd, const char *str)
* Open (and truncate) the file at path, write the contents of buf to it,
* and close it. Dies if any errors are encountered.
*/
-extern void write_file_buf(const char *path, const char *buf, size_t len);
+void write_file_buf(const char *path, const char *buf, size_t len);
/**
* Like write_file_buf(), but format the contents into a buffer first.
@@ -1657,16 +1752,16 @@ extern void write_file_buf(const char *path, const char *buf, size_t len);
* write_file(path, "counter: %d", ctr);
*/
__attribute__((format (printf, 2, 3)))
-extern void write_file(const char *path, const char *fmt, ...);
+void write_file(const char *path, const char *fmt, ...);
/* pager.c */
-extern void setup_pager(void);
-extern int pager_in_use(void);
+void setup_pager(void);
+int pager_in_use(void);
extern int pager_use_color;
-extern int term_columns(void);
-extern int decimal_width(uintmax_t);
-extern int check_pager_config(const char *cmd);
-extern void prepare_pager_args(struct child_process *, const char *pager);
+int term_columns(void);
+int decimal_width(uintmax_t);
+int check_pager_config(const char *cmd);
+void prepare_pager_args(struct child_process *, const char *pager);
extern const char *editor_program;
extern const char *askpass_program;
@@ -1710,13 +1805,13 @@ void shift_tree_by(const struct object_id *, const struct object_id *, struct ob
/* All WS_* -- when extended, adapt diff.c emit_symbol */
#define WS_RULE_MASK 07777
extern unsigned whitespace_rule_cfg;
-extern unsigned whitespace_rule(struct index_state *, const char *);
-extern unsigned parse_whitespace_rule(const char *);
-extern unsigned ws_check(const char *line, int len, unsigned ws_rule);
-extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws);
-extern char *whitespace_error_string(unsigned ws);
-extern void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *);
-extern int ws_blank_line(const char *line, int len, unsigned ws_rule);
+unsigned whitespace_rule(struct index_state *, const char *);
+unsigned parse_whitespace_rule(const char *);
+unsigned ws_check(const char *line, int len, unsigned ws_rule);
+void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws);
+char *whitespace_error_string(unsigned ws);
+void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *);
+int ws_blank_line(const char *line, int len, unsigned ws_rule);
#define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK)
/* ls-files */
@@ -1786,6 +1881,9 @@ void safe_create_dir(const char *dir, int share);
* Should we print an ellipsis after an abbreviated SHA-1 value
* when doing diff-raw output or indicating a detached HEAD?
*/
-extern int print_sha1_ellipsis(void);
+int print_sha1_ellipsis(void);
+
+/* Return 1 if the file is empty or does not exists, 0 otherwise. */
+int is_empty_or_missing_file(const char *filename);
#endif /* CACHE_H */