#ifndef CACHE_H
#define CACHE_H
-#include <stdio.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <stddef.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <errno.h>
-#include <sys/mman.h>
-#include <netinet/in.h>
-
-#include <openssl/sha.h>
+#include "git-compat-util.h"
+
+#include SHA1_HEADER
#include <zlib.h>
+#if ZLIB_VERNUM < 0x1200
+#define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
+#endif
+
+#ifdef DT_UNKNOWN
+#define DTYPE(de) ((de)->d_type)
+#else
+#define DT_UNKNOWN 0
+#define DT_DIR 1
+#define DT_REG 2
+#define DT_LNK 3
+#define DTYPE(de) DT_UNKNOWN
+#endif
+
/*
- * Basic data structures for the directory cache
+ * Intensive research over the course of many years has shown that
+ * port 9418 is totally unused by anything else. Or
+ *
+ * Your search - "port 9418" - did not match any documents.
+ *
+ * as www.google.com puts it.
+ *
+ * This port has been properly assigned for git use by IANA:
+ * git (Assigned-9418) [I06-050728-0001].
+ *
+ * git 9418/tcp git pack transfer service
+ * git 9418/udp git pack transfer service
*
- * NOTE NOTE NOTE! This is all in the native CPU byte format. It's
- * not even trying to be portable. It's trying to be efficient. It's
- * just a cache, after all.
+ * with Linus Torvalds <torvalds@osdl.org> as the point of
+ * contact. September 2005.
+ *
+ * See http://www.iana.org/assignments/port-numbers
+ */
+#define DEFAULT_GIT_PORT 9418
+
+/*
+ * Basic data structures for the directory cache
*/
#define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
unsigned int hdr_signature;
unsigned int hdr_version;
unsigned int hdr_entries;
- unsigned char sha1[20];
};
/*
char name[0];
};
-#define CE_NAMEMASK (0x0fff)
-#define CE_STAGE1 (0x1000)
-#define CE_STAGE2 (0x2000)
+#define CE_NAMEMASK (0x0fff)
+#define CE_STAGEMASK (0x3000)
+#define CE_UPDATE (0x4000)
+#define CE_STAGESHIFT 12
-const char *sha1_file_directory;
-struct cache_entry **active_cache;
-unsigned int active_nr, active_alloc;
+#define create_ce_flags(len, stage) htons((len) | ((stage) << CE_STAGESHIFT))
+#define ce_namelen(ce) (CE_NAMEMASK & ntohs((ce)->ce_flags))
+#define ce_size(ce) cache_entry_size(ce_namelen(ce))
+#define ce_stage(ce) ((CE_STAGEMASK & ntohs((ce)->ce_flags)) >> CE_STAGESHIFT)
-#define DB_ENVIRONMENT "SHA1_FILE_DIRECTORY"
-#define DEFAULT_DB_ENVIRONMENT ".git/objects"
+#define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
+static inline unsigned int create_ce_mode(unsigned int mode)
+{
+ if (S_ISLNK(mode))
+ return htonl(S_IFLNK);
+ return htonl(S_IFREG | ce_permissions(mode));
+}
#define cache_entry_size(len) ((offsetof(struct cache_entry,name) + (len) + 8) & ~7)
-#define ce_namelen(ce) (CE_NAMEMASK & ntohs((ce)->ce_flags))
-#define ce_size(ce) cache_entry_size(ce_namelen(ce))
+
+extern struct cache_entry **active_cache;
+extern unsigned int active_nr, active_alloc, active_cache_changed;
+
+#define GIT_DIR_ENVIRONMENT "GIT_DIR"
+#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
+#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
+#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
+#define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
+
+extern char *get_git_dir(void);
+extern char *get_object_directory(void);
+extern char *get_refs_directory(void);
+extern char *get_index_file(void);
+extern char *get_graft_file(void);
+
+#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
+
+extern const char **get_pathspec(const char *prefix, const char **pathspec);
+extern const char *setup_git_directory_gently(int *);
+extern const char *setup_git_directory(void);
+extern const char *prefix_path(const char *prefix, int len, const char *path);
+extern const char *prefix_filename(const char *prefix, int len, const char *path);
#define alloc_nr(x) (((x)+16)*3/2)
extern int read_cache(void);
extern int write_cache(int newfd, struct cache_entry **cache, int entries);
extern int cache_name_pos(const char *name, int namelen);
-extern int add_cache_entry(struct cache_entry *ce, int ok_to_add);
-extern int remove_file_from_cache(char *path);
-extern int cache_match_stat(struct cache_entry *ce, struct stat *st);
+#define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
+#define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
+#define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
+extern int add_cache_entry(struct cache_entry *ce, int option);
+extern int remove_cache_entry_at(int pos);
+extern int remove_file_from_cache(const char *path);
+extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
+extern int ce_match_stat(struct cache_entry *ce, struct stat *st);
+extern int ce_modified(struct cache_entry *ce, struct stat *st);
+extern int ce_path_match(const struct cache_entry *ce, const char **pathspec);
+extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, const char *type);
+extern int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object);
+extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
+extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
+
+struct cache_file {
+ struct cache_file *next;
+ char lockfile[PATH_MAX];
+};
+extern int hold_index_file_for_update(struct cache_file *, const char *path);
+extern int commit_index_file(struct cache_file *);
+extern void rollback_index_file(struct cache_file *);
+
+extern int trust_executable_bit;
+extern int only_use_symrefs;
+extern int diff_rename_limit_default;
+extern int shared_repository;
+
+#define GIT_REPO_VERSION 0
+extern int repository_format_version;
+extern int check_repository_format(void);
#define MTIME_CHANGED 0x0001
#define CTIME_CHANGED 0x0002
#define MODE_CHANGED 0x0008
#define INODE_CHANGED 0x0010
#define DATA_CHANGED 0x0020
+#define TYPE_CHANGED 0x0040
/* Return a statically allocated filename matching the sha1 signature */
+extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
+extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
extern char *sha1_file_name(const unsigned char *sha1);
+extern char *sha1_pack_name(const unsigned char *sha1);
+extern char *sha1_pack_index_name(const unsigned char *sha1);
+extern const char *find_unique_abbrev(const unsigned char *sha1, int);
+extern const unsigned char null_sha1[20];
-/* Write a memory buffer out to the sha file */
-extern int write_sha1_buffer(const unsigned char *sha1, void *buf, unsigned int size);
+int git_mkstemp(char *path, size_t n, const char *template);
+
+int adjust_shared_perm(const char *path);
+int safe_create_leading_directories(char *path);
+char *safe_strncpy(char *, const char *, size_t);
+char *enter_repo(char *path, int strict);
/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
-extern void * map_sha1_file(const unsigned char *sha1, unsigned long *size);
+extern int unpack_sha1_header(z_stream *stream, void *map, unsigned long mapsize, void *buffer, unsigned long size);
+extern int parse_sha1_header(char *hdr, char *type, unsigned long *sizep);
+extern int sha1_object_info(const unsigned char *, char *, unsigned long *);
extern void * unpack_sha1_file(void *map, unsigned long mapsize, char *type, unsigned long *size);
extern void * read_sha1_file(const unsigned char *sha1, char *type, unsigned long *size);
-extern int write_sha1_file(char *buf, unsigned len, unsigned char *return_sha1);
-extern int check_sha1_signature(unsigned char *sha1, void *buf, unsigned long size);
+extern int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
+extern char *write_sha1_file_prepare(void *buf,
+ unsigned long len,
+ const char *type,
+ unsigned char *sha1,
+ unsigned char *hdr,
+ int *hdrlen);
+
+extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
+
+/* Read a tree into the cache */
+extern int read_tree(void *buffer, unsigned long size, int stage, const char **paths);
+
+extern int write_sha1_from_fd(const unsigned char *sha1, int fd, char *buffer,
+ size_t bufsize, size_t *bufposn);
+extern int write_sha1_to_fd(int fd, const unsigned char *sha1);
+extern int move_temp_to_file(const char *tmpfile, char *filename);
+
+extern int has_sha1_pack(const unsigned char *sha1);
+extern int has_sha1_file(const unsigned char *sha1);
+
+extern int has_pack_file(const unsigned char *sha1);
+extern int has_pack_index(const unsigned char *sha1);
/* Convert to/from hex/sha1 representation */
+extern int get_sha1(const char *str, unsigned char *sha1);
extern int get_sha1_hex(const char *hex, unsigned char *sha1);
extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
+extern int read_ref(const char *filename, unsigned char *sha1);
+extern const char *resolve_ref(const char *path, unsigned char *sha1, int);
+extern int create_symref(const char *git_HEAD, const char *refs_heads_master);
+extern int validate_symref(const char *git_HEAD);
-/* General helper functions */
-extern void usage(const char *err);
-extern void die(const char *err, ...);
-extern int error(const char *err, ...);
-
+extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
+extern void *read_object_with_reference(const unsigned char *sha1,
+ const char *required_type,
+ unsigned long *size,
+ unsigned char *sha1_ret);
+
+const char *show_date(unsigned long time, int timezone);
+int parse_date(const char *date, char *buf, int bufsize);
+void datestamp(char *buf, int bufsize);
+unsigned long approxidate(const char *);
+
+extern int setup_ident(void);
+extern const char *git_author_info(void);
+extern const char *git_committer_info(void);
+
+struct checkout {
+ const char *base_dir;
+ int base_dir_len;
+ unsigned force:1,
+ quiet:1,
+ not_new:1,
+ refresh_cache:1;
+};
+
+extern int checkout_entry(struct cache_entry *ce, struct checkout *state);
+
+extern struct alternate_object_database {
+ struct alternate_object_database *next;
+ char *name;
+ char base[0]; /* more */
+} *alt_odb_list;
+extern void prepare_alt_odb(void);
+
+extern struct packed_git {
+ struct packed_git *next;
+ unsigned long index_size;
+ unsigned long pack_size;
+ unsigned int *index_base;
+ void *pack_base;
+ unsigned int pack_last_used;
+ unsigned int pack_use_cnt;
+ int pack_local;
+ unsigned char sha1[20];
+ char pack_name[0]; /* something like ".git/objects/pack/xxxxx.pack" */
+} *packed_git;
+
+struct pack_entry {
+ unsigned int offset;
+ unsigned char sha1[20];
+ struct packed_git *p;
+};
+
+struct ref {
+ struct ref *next;
+ unsigned char old_sha1[20];
+ unsigned char new_sha1[20];
+ unsigned char force;
+ struct ref *peer_ref; /* when renaming */
+ char name[0];
+};
+
+extern int git_connect(int fd[2], char *url, const char *prog);
+extern int finish_connect(pid_t pid);
+extern int path_match(const char *path, int nr, char **match);
+extern int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
+ int nr_refspec, char **refspec, int all);
+extern int get_ack(int fd, unsigned char *result_sha1);
+extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, int ignore_funny);
+extern int server_supports(const char *feature);
+
+extern struct packed_git *parse_pack_index(unsigned char *sha1);
+extern struct packed_git *parse_pack_index_file(const unsigned char *sha1,
+ char *idx_path);
+
+extern void prepare_packed_git(void);
+extern void install_packed_git(struct packed_git *pack);
+
+extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
+ struct packed_git *packs);
+
+extern int use_packed_git(struct packed_git *);
+extern void unuse_packed_git(struct packed_git *);
+extern struct packed_git *add_packed_git(char *, int, int);
+extern int num_packed_objects(const struct packed_git *p);
+extern int nth_packed_object_sha1(const struct packed_git *, int, unsigned char*);
+extern int find_pack_entry_one(const unsigned char *, struct pack_entry *, struct packed_git *);
+extern void *unpack_entry_gently(struct pack_entry *, char *, unsigned long *);
+extern void packed_object_info_detail(struct pack_entry *, char *, unsigned long *, unsigned long *, int *, unsigned char *);
+
+/* Dumb servers support */
+extern int update_server_info(int);
+
+typedef int (*config_fn_t)(const char *, const char *);
+extern int git_default_config(const char *, const char *);
+extern int git_config_from_file(config_fn_t fn, const char *);
+extern int git_config(config_fn_t fn);
+extern int git_config_int(const char *, const char *);
+extern int git_config_bool(const char *, const char *);
+extern int git_config_set(const char *, const char *);
+extern int git_config_set_multivar(const char *, const char *, const char *, int);
+extern int check_repository_format_version(const char *var, const char *value);
+
+#define MAX_GITNAME (1000)
+extern char git_default_email[MAX_GITNAME];
+extern char git_default_name[MAX_GITNAME];
+
+#define MAX_ENCODING_LENGTH 64
+extern char git_commit_encoding[MAX_ENCODING_LENGTH];
+
+extern int copy_fd(int ifd, int ofd);
+
+/* Finish off pack transfer receiving end */
+extern int receive_unpack_pack(int fd[2], const char *me, int quiet);
+extern int receive_keep_pack(int fd[2], const char *me);
+
#endif /* CACHE_H */