diff options
Diffstat (limited to 'cache.h')
| -rw-r--r-- | cache.h | 197 |
1 files changed, 59 insertions, 138 deletions
@@ -4,6 +4,7 @@ #include "git-compat-util.h" #include "strbuf.h" #include "hashmap.h" +#include "mru.h" #include "advice.h" #include "gettext.h" #include "convert.h" @@ -443,6 +444,7 @@ static inline enum object_type object_type(unsigned int mode) #define GIT_NOGLOB_PATHSPECS_ENVIRONMENT "GIT_NOGLOB_PATHSPECS" #define GIT_ICASE_PATHSPECS_ENVIRONMENT "GIT_ICASE_PATHSPECS" #define GIT_QUARANTINE_ENVIRONMENT "GIT_QUARANTINE_PATH" +#define GIT_OPTIONAL_LOCKS_ENVIRONMENT "GIT_OPTIONAL_LOCKS" /* * This environment variable is expected to contain a boolean indicating @@ -600,9 +602,28 @@ extern int do_read_index(struct index_state *istate, const char *path, extern int read_index_from(struct index_state *, const char *path); extern int is_index_unborn(struct index_state *); extern int read_index_unmerged(struct index_state *); + +/* For use with `write_locked_index()`. */ #define COMMIT_LOCK (1 << 0) -#define CLOSE_LOCK (1 << 1) + +/* + * Write the index while holding an already-taken lock. Close the lock, + * and if `COMMIT_LOCK` is given, commit it. + * + * Unless a split index is in use, write the index into the lockfile. + * + * With a split index, write the shared index to a temporary file, + * adjust its permissions and rename it into place, then write the + * split index to the lockfile. If the temporary file for the shared + * index cannot be created, fall back to the behavior described in + * the previous paragraph. + * + * With `COMMIT_LOCK`, the lock is always committed or rolled back. + * Without it, the lock is closed, but neither committed nor rolled + * back. + */ extern 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 *); @@ -684,8 +705,8 @@ extern int ie_modified(const struct index_state *, const struct cache_entry *, s #define HASH_WRITE_OBJECT 1 #define HASH_FORMAT_CHECK 2 -extern int index_fd(unsigned char *sha1, int fd, struct stat *st, enum object_type type, const char *path, unsigned flags); -extern int index_path(unsigned char *sha1, const char *path, struct stat *st, unsigned flags); +extern int index_fd(struct object_id *oid, int fd, struct stat *st, enum object_type type, const char *path, unsigned flags); +extern int index_path(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 @@ -714,6 +735,10 @@ extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st); 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 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 *); extern int hold_locked_index(struct lock_file *, int); @@ -783,6 +808,11 @@ extern int protect_ntfs; extern int ref_paranoia; /* + * Returns the boolean value of $GIT_OPTIONAL_LOCKS (or the default value). + */ +int use_optional_locks(void); + +/* * The character that begins a commented line in user-editable file * that is subject to stripspace. */ @@ -903,20 +933,6 @@ extern void check_repository_format(void); extern const char *sha1_file_name(const unsigned char *sha1); /* - * Return the name of the (local) packfile with the specified sha1 in - * its name. The return value is a pointer to memory that is - * overwritten each time this function is called. - */ -extern char *sha1_pack_name(const unsigned char *sha1); - -/* - * Return the name of the (local) pack index file with the specified - * sha1 in its name. The return value is a pointer to memory that is - * overwritten each time this function is called. - */ -extern char *sha1_pack_index_name(const unsigned char *sha1); - -/* * Return an abbreviated sha1 unique within this repository's object database. * The result will be at least `len` characters long, and will be NUL * terminated. @@ -939,14 +955,7 @@ extern const struct object_id null_oid; static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2) { - int i; - - for (i = 0; i < GIT_SHA1_RAWSZ; i++, sha1++, sha2++) { - if (*sha1 != *sha2) - return *sha1 - *sha2; - } - - return 0; + return memcmp(sha1, sha2, GIT_SHA1_RAWSZ); } static inline int oidcmp(const struct object_id *oid1, const struct object_id *oid2) @@ -1146,6 +1155,14 @@ char *strip_path_suffix(const char *path, const char *suffix); int daemon_avoid_alias(const char *path); extern int is_ntfs_dotgit(const char *name); +/* + * Returns true iff "str" could be confused as a command-line option when + * passed to a sub-program like "ssh". Note that this has nothing to do with + * shell-quoting, which should be handled separately; we're assuming here that + * the string makes it verbatim to the sub-program. + */ +int looks_like_command_line_option(const char *str); + /** * Return a newly allocated string with the evaluation of * "$XDG_CONFIG_HOME/git/$filename" if $XDG_CONFIG_HOME is non-empty, otherwise @@ -1191,7 +1208,7 @@ static inline const unsigned char *lookup_replace_object(const unsigned char *sh 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, unsigned char *sha1, unsigned flags); +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); @@ -1200,15 +1217,10 @@ extern void *map_sha1_file(const unsigned char *sha1, unsigned long *size); 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); -/* global flag to enable extra checks when accessing packed objects */ -extern int do_check_packed_object_crc; - extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type); extern int finalize_object_file(const char *tmpfile, const char *filename); -extern int has_sha1_pack(const unsigned char *sha1); - /* * 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, @@ -1244,8 +1256,6 @@ extern int has_object_file_with_flags(const struct object_id *oid, int flags); */ extern int has_loose_object_nonlocal(const unsigned char *sha1); -extern int has_pack_index(const unsigned char *sha1); - extern void assert_sha1_type(const unsigned char *sha1, enum object_type expect); /* Helper to check and "touch" a file */ @@ -1263,8 +1273,8 @@ static inline unsigned int hexval(unsigned char c) */ static inline int hex2chr(const char *s) { - int val = hexval(s[0]); - return (val < 0) ? val : (val << 4) | hexval(s[1]); + unsigned int val = hexval(s[0]); + return (val & ~0xf) ? val : (val << 4) | hexval(s[1]); } /* Convert to/from hex/sha1 representation */ @@ -1331,6 +1341,13 @@ extern int get_sha1_hex(const char *hex, unsigned char *sha1); extern 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); + +/* * Convert a binary sha1 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 @@ -1491,6 +1508,7 @@ struct checkout { struct index_state *istate; const char *base_dir; int base_dir_len; + struct delayed_checkout *delayed_checkout; unsigned force:1, quiet:1, not_new:1, @@ -1500,6 +1518,8 @@ struct checkout { #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); struct cache_def { struct strbuf path; @@ -1540,7 +1560,6 @@ extern struct alternate_object_database { char path[FLEX_ARRAY]; } *alt_odb_list; extern void prepare_alt_odb(void); -extern void read_info_alternates(const char * relative_base, int depth); extern char *compute_alternate_path(const char *path, struct strbuf *err); typedef int alt_odb_fn(struct alternate_object_database *, void *); extern int foreach_alt_odb(alt_odb_fn, void*); @@ -1607,8 +1626,7 @@ extern struct packed_git { * A most-recently-used ordered version of the packed_git list, which can * be iterated instead of packed_git (and marked via mru_mark). */ -struct mru; -extern struct mru *packed_git_mru; +extern struct mru packed_git_mru; struct pack_entry { off_t offset; @@ -1616,29 +1634,6 @@ struct pack_entry { struct packed_git *p; }; -extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path); - -/* A hook to report invalid files in pack directory */ -#define PACKDIR_FILE_PACK 1 -#define PACKDIR_FILE_IDX 2 -#define PACKDIR_FILE_GARBAGE 4 -extern void (*report_garbage)(unsigned seen_bits, const char *path); - -extern void prepare_packed_git(void); -extern void reprepare_packed_git(void); -extern void install_packed_git(struct packed_git *pack); - -/* - * Give a rough count of objects in the repository. This sacrifices accuracy - * for speed. - */ -unsigned long approximate_object_count(void); - -extern struct packed_git *find_sha1_pack(const unsigned char *sha1, - struct packed_git *packs); - -extern void pack_report(void); - /* * Create a temporary file rooted in the object database directory, or * die on failure. The filename is taken from "pattern", which should have the @@ -1648,15 +1643,6 @@ extern void pack_report(void); extern int odb_mkstemp(struct strbuf *template, const char *pattern); /* - * Generate the filename to be used for a pack file with checksum "sha1" and - * extension "ext". The result is written into the strbuf "buf", overwriting - * any existing contents. A pointer to buf->buf is returned as a convenience. - * - * Example: odb_pack_name(out, sha1, "idx") => ".git/objects/pack/pack-1234..idx" - */ -extern char *odb_pack_name(struct strbuf *buf, const unsigned char *sha1, const char *ext); - -/* * 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. @@ -1664,67 +1650,6 @@ extern char *odb_pack_name(struct strbuf *buf, const unsigned char *sha1, const extern int odb_pack_keep(const char *name); /* - * mmap the index file for the specified packfile (if it is not - * already mmapped). Return 0 on success. - */ -extern int open_pack_index(struct packed_git *); - -/* - * munmap the index file for the specified packfile (if it is - * currently mmapped). - */ -extern void close_pack_index(struct packed_git *); - -extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned long *); -extern void close_pack_windows(struct packed_git *); -extern void close_all_packs(void); -extern void unuse_pack(struct pack_window **); -extern void clear_delta_base_cache(void); -extern struct packed_git *add_packed_git(const char *path, size_t path_len, int local); - -/* - * Make sure that a pointer access into an mmap'd index file is within bounds, - * and can provide at least 8 bytes of data. - * - * Note that this is only necessary for variable-length segments of the file - * (like the 64-bit extended offset table), as we compare the size to the - * fixed-length parts when we open the file. - */ -extern void check_pack_index_ptr(const struct packed_git *p, const void *ptr); - -/* - * Return the SHA-1 of the nth object within the specified packfile. - * Open the index if it is not already open. The return value points - * at the SHA-1 within the mmapped index. Return NULL if there is an - * error. - */ -extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t n); -/* - * Like nth_packed_object_sha1, but write the data into the object specified by - * the the first argument. Returns the first argument on success, and NULL on - * error. - */ -extern const struct object_id *nth_packed_object_oid(struct object_id *, struct packed_git *, uint32_t n); - -/* - * Return the offset of the nth object within the specified packfile. - * The index must already be opened. - */ -extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t n); - -/* - * If the object named sha1 is present in the specified packfile, - * return its offset within the packfile; otherwise, return 0. - */ -extern off_t find_pack_entry_one(const unsigned char *sha1, struct packed_git *); - -extern int is_pack_valid(struct packed_git *); -extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *); -extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep); -extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t); -extern int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *); - -/* * Iterate over the files in the loose-object parts of the object * directory "path", triggering the following callbacks: * @@ -1773,17 +1698,12 @@ int for_each_loose_file_in_objdir_buf(struct strbuf *path, void *data); /* - * Iterate over loose and packed objects in both the local + * Iterate over loose objects in both the local * repository and any alternates repositories (unless the * LOCAL_ONLY flag is set). */ #define FOR_EACH_OBJECT_LOCAL_ONLY 0x1 -typedef int each_packed_object_fn(const struct object_id *oid, - struct packed_git *pack, - uint32_t pos, - void *data); extern int for_each_loose_object(each_loose_object_fn, void *, unsigned flags); -extern int for_each_packed_object(each_packed_object_fn, void *, unsigned flags); struct object_info { /* Request */ @@ -1833,7 +1753,6 @@ struct object_info { /* 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); -extern int packed_object_info(struct packed_git *pack, off_t offset, struct object_info *); /* Dumb servers support */ extern int update_server_info(int); @@ -1952,6 +1871,8 @@ void shift_tree_by(const struct object_id *, const struct object_id *, struct ob #define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF) #define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8) #define WS_TAB_WIDTH_MASK 077 +/* All WS_* -- when extended, adapt diff.c emit_symbol */ +#define WS_RULE_MASK 07777 extern unsigned whitespace_rule_cfg; extern unsigned whitespace_rule(const char *); extern unsigned parse_whitespace_rule(const char *); |