diff options
Diffstat (limited to 'cache.h')
| -rw-r--r-- | cache.h | 89 |
1 files changed, 74 insertions, 15 deletions
@@ -119,15 +119,19 @@ struct cache_time { unsigned int nsec; }; +struct stat_data { + struct cache_time sd_ctime; + struct cache_time sd_mtime; + unsigned int sd_dev; + unsigned int sd_ino; + unsigned int sd_uid; + unsigned int sd_gid; + unsigned int sd_size; +}; + struct cache_entry { - struct cache_time ce_ctime; - struct cache_time ce_mtime; - unsigned int ce_dev; - unsigned int ce_ino; + struct stat_data ce_stat_data; unsigned int ce_mode; - unsigned int ce_uid; - unsigned int ce_gid; - unsigned int ce_size; unsigned int ce_flags; unsigned int ce_namelen; unsigned char sha1[20]; @@ -190,7 +194,8 @@ struct cache_entry { * another. But we never change the name, or the hash state! */ #define CE_STATE_MASK (CE_HASHED | CE_UNHASHED) -static inline void copy_cache_entry(struct cache_entry *dst, struct cache_entry *src) +static inline void copy_cache_entry(struct cache_entry *dst, + const struct cache_entry *src) { unsigned int state = dst->ce_flags & CE_STATE_MASK; @@ -222,7 +227,8 @@ static inline unsigned int create_ce_mode(unsigned int mode) return S_IFGITLINK; return S_IFREG | ce_permissions(mode); } -static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode) +static inline unsigned int ce_mode_from_stat(const struct cache_entry *ce, + unsigned int mode) { extern int trust_executable_bit, has_symlinks; if (!has_symlinks && S_ISREG(mode) && @@ -480,8 +486,8 @@ extern void *read_blob_data_from_index(struct index_state *, const char *, unsig #define CE_MATCH_RACY_IS_DIRTY 02 /* do stat comparison even if CE_SKIP_WORKTREE is true */ #define CE_MATCH_IGNORE_SKIP_WORKTREE 04 -extern int ie_match_stat(const struct index_state *, struct cache_entry *, struct stat *, unsigned int); -extern int ie_modified(const struct index_state *, struct cache_entry *, struct stat *, unsigned int); +extern int ie_match_stat(const struct index_state *, const struct cache_entry *, struct stat *, unsigned int); +extern int ie_modified(const struct index_state *, const struct cache_entry *, struct stat *, unsigned int); #define PATHSPEC_ONESTAR 1 /* the pathspec pattern sastisfies GFNM_ONESTAR */ @@ -509,6 +515,21 @@ extern int limit_pathspec_to_literal(void); #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); + +/* + * 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); + +/* + * Return 0 if st is consistent with a file not having been changed + * since sd was filled. If there are differences, return a + * 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 void fill_stat_cache_info(struct cache_entry *ce, struct stat *st); #define REFRESH_REALLY 0x0001 /* ignore_valid */ @@ -772,9 +793,6 @@ 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; -/* for development: log offset of pack access */ -extern const char *log_pack_access; - extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type); extern int move_temp_to_file(const char *tmpfile, const char *filename); @@ -910,6 +928,7 @@ void show_date_relative(unsigned long time, int tz, const struct timeval *now, struct strbuf *timebuf); int parse_date(const char *date, char *buf, int bufsize); int parse_date_basic(const char *date, unsigned long *timestamp, int *offset); +int parse_expiry_date(const char *date, unsigned long *timestamp); void datestamp(char *buf, int bufsize); #define approxidate(s) approxidate_careful((s), NULL) unsigned long approxidate_careful(const char *, int *); @@ -1024,9 +1043,21 @@ struct ref { unsigned int force:1, forced_update:1, - merge:1, deletion:1, matched:1; + + /* + * Order is important here, as we write to FETCH_HEAD + * in numeric order. And the default NOT_FOR_MERGE + * should be 0, so that xcalloc'd structures get it + * by default. + */ + enum { + FETCH_HEAD_MERGE = -1, + FETCH_HEAD_NOT_FOR_MERGE = 0, + FETCH_HEAD_IGNORE = 1 + } fetch_head_status; + enum { REF_STATUS_NONE = 0, REF_STATUS_OK, @@ -1099,6 +1130,7 @@ extern int unpack_object_header(struct packed_git *, struct pack_window **, off_ struct object_info { /* Request */ unsigned long *sizep; + unsigned long *disk_sizep; /* Response */ enum { @@ -1326,4 +1358,31 @@ int checkout_fast_forward(const unsigned char *from, int sane_execvp(const char *file, char *const argv[]); +/* + * A struct to encapsulate the concept of whether a file has changed + * since we last checked it. This uses criteria similar to those used + * for the index. + */ +struct stat_validity { + struct stat_data *sd; +}; + +void stat_validity_clear(struct stat_validity *sv); + +/* + * Returns 1 if the path is a regular file (or a symlink to a regular + * file) and matches the saved stat_validity, 0 otherwise. A missing + * or inaccessible file is considered a match if the struct was just + * initialized, or if the previous update found an inaccessible file. + */ +int stat_validity_check(struct stat_validity *sv, const char *path); + +/* + * Update the stat_validity from a file opened at descriptor fd. If + * the file is missing, inaccessible, or not a regular file, then + * future calls to stat_validity_check will match iff one of those + * conditions continues to be true. + */ +void stat_validity_update(struct stat_validity *sv, int fd); + #endif /* CACHE_H */ |