#include <stdarg.h>
#include <string.h>
#include <errno.h>
+#include <limits.h>
#include <sys/mman.h>
#include <sys/param.h>
#include <netinet/in.h>
+#include <sys/types.h>
+#include <dirent.h>
#include SHA1_HEADER
#include <zlib.h>
#define DT_UNKNOWN 0
#define DT_DIR 1
#define DT_REG 2
+#define DT_LNK 3
#define DTYPE(de) DT_UNKNOWN
#endif
+#ifdef __GNUC__
+#define NORETURN __attribute__((__noreturn__))
+#else
+#define NORETURN
+#endif
+
+#ifndef __attribute__
+#define __attribute(x)
+#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.
*
- * 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.
+ * as www.google.com puts it.
+ */
+#define DEFAULT_GIT_PORT 9418
+
+/*
+ * Environment variables transition.
+ * We accept older names for now but warn.
+ */
+extern char *gitenv_bc(const char *);
+#define gitenv(e) (getenv(e) ? : gitenv_bc(e))
+
+/*
+ * Basic data structures for the directory cache
*/
#define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
#define CE_NAMEMASK (0x0fff)
#define CE_STAGEMASK (0x3000)
+#define CE_UPDATE (0x4000)
#define CE_STAGESHIFT 12
#define create_ce_flags(len, stage) htons((len) | ((stage) << CE_STAGESHIFT))
#define cache_entry_size(len) ((offsetof(struct cache_entry,name) + (len) + 8) & ~7)
-const char *sha1_file_directory;
-struct cache_entry **active_cache;
-unsigned int active_nr, active_alloc;
+extern struct cache_entry **active_cache;
+extern unsigned int active_nr, active_alloc, active_cache_changed;
-#define DB_ENVIRONMENT "SHA1_FILE_DIRECTORY"
-#define DEFAULT_DB_ENVIRONMENT ".git/objects"
+#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"
-#define get_object_directory() (getenv(DB_ENVIRONMENT) ? : DEFAULT_DB_ENVIRONMENT)
+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 INDEX_ENVIRONMENT "GIT_INDEX_FILE"
-#define DEFAULT_INDEX_ENVIRONMENT ".git/index"
+#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
-#define get_index_file() (getenv(INDEX_ENVIRONMENT) ? : DEFAULT_INDEX_ENVIRONMENT)
+extern const char **get_pathspec(const char *prefix, char **pathspec);
+extern const char *setup_git_directory(void);
+extern char *prefix_path(const char *prefix, int len, 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_entry_at(int pos);
+#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(char *path);
-extern int same_name(struct cache_entry *a, struct cache_entry *b);
-extern int cache_match_stat(struct cache_entry *ce, struct stat *st);
-extern int index_fd(unsigned char *sha1, int fd, struct stat *st);
+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_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 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 *);
#define MTIME_CHANGED 0x0001
#define CTIME_CHANGED 0x0002
#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);
+
+int git_mkstemp(char *path, size_t n, const char *template);
+
+int safe_create_leading_directories(char *path);
+char *safe_strncpy(char *, const char *, size_t);
/* 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 long len, const char *type, unsigned char *return_sha1);
+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(unsigned char *sha1, void *buf, unsigned long size, const char *type);
+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);
+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);
+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 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! */
/* General helper functions */
-extern void usage(const char *err);
-extern void die(const char *err, ...);
-extern int error(const char *err, ...);
+extern void usage(const char *err) NORETURN;
+extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
+extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
+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 unsigned char *required_type,
+ const char *required_type,
unsigned long *size,
unsigned char *sha1_ret);
const char *show_date(unsigned long time, int timezone);
-void parse_date(char *date, char *buf, int bufsize);
+void parse_date(const char *date, char *buf, int bufsize);
void datestamp(char *buf, int bufsize);
-static inline void *xmalloc(int size)
+extern int setup_ident(void);
+extern char *get_ident(const char *name, const char *email, const char *date_str);
+extern char *git_author_info(void);
+extern char *git_committer_info(void);
+
+static inline void *xmalloc(size_t size)
{
void *ret = malloc(size);
if (!ret)
return ret;
}
-static inline void *xrealloc(void *ptr, int size)
+static inline void *xrealloc(void *ptr, size_t size)
{
void *ret = realloc(ptr, size);
if (!ret)
return ret;
}
+static inline void *xcalloc(size_t nmemb, size_t size)
+{
+ void *ret = calloc(nmemb, size);
+ if (!ret)
+ die("Out of memory, calloc failed");
+ return ret;
+}
+
+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;
+ 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];
+ 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);
+
+extern struct packed_git *parse_pack_index(unsigned char *sha1);
+extern struct packed_git *parse_pack_index_file(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);
+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);
+
#endif /* CACHE_H */