зеркало из https://github.com/microsoft/git.git
2044 строки
70 KiB
C
2044 строки
70 KiB
C
#ifndef CACHE_H
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#define CACHE_H
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#include "git-compat-util.h"
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#include "strbuf.h"
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#include "hashmap.h"
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#include "advice.h"
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#include "gettext.h"
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#include "convert.h"
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#include "trace.h"
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#include "string-list.h"
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#include "pack-revindex.h"
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#include "hash.h"
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#include "path.h"
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#include "sha1-array.h"
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#ifndef platform_SHA_CTX
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/*
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* platform's underlying implementation of SHA-1; could be OpenSSL,
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* blk_SHA, Apple CommonCrypto, etc... Note that including
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* SHA1_HEADER may have already defined platform_SHA_CTX for our
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* own implementations like block-sha1 and ppc-sha1, so we list
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* the default for OpenSSL compatible SHA-1 implementations here.
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*/
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#define platform_SHA_CTX SHA_CTX
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#define platform_SHA1_Init SHA1_Init
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#define platform_SHA1_Update SHA1_Update
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#define platform_SHA1_Final SHA1_Final
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#endif
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#define git_SHA_CTX platform_SHA_CTX
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#define git_SHA1_Init platform_SHA1_Init
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#define git_SHA1_Update platform_SHA1_Update
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#define git_SHA1_Final platform_SHA1_Final
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#ifdef SHA1_MAX_BLOCK_SIZE
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#include "compat/sha1-chunked.h"
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#undef git_SHA1_Update
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#define git_SHA1_Update git_SHA1_Update_Chunked
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#endif
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#include <zlib.h>
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typedef struct git_zstream {
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z_stream z;
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unsigned long avail_in;
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unsigned long avail_out;
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unsigned long total_in;
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unsigned long total_out;
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unsigned char *next_in;
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unsigned char *next_out;
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} git_zstream;
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void git_inflate_init(git_zstream *);
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void git_inflate_init_gzip_only(git_zstream *);
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void git_inflate_end(git_zstream *);
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int git_inflate(git_zstream *, int flush);
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void git_deflate_init(git_zstream *, int level);
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void git_deflate_init_gzip(git_zstream *, int level);
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void git_deflate_init_raw(git_zstream *, int level);
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void git_deflate_end(git_zstream *);
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int git_deflate_abort(git_zstream *);
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int git_deflate_end_gently(git_zstream *);
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int git_deflate(git_zstream *, int flush);
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unsigned long git_deflate_bound(git_zstream *, unsigned long);
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/* The length in bytes and in hex digits of an object name (SHA-1 value). */
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#define GIT_SHA1_RAWSZ 20
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#define GIT_SHA1_HEXSZ (2 * GIT_SHA1_RAWSZ)
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/* The length in byte and in hex digits of the largest possible hash value. */
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#define GIT_MAX_RAWSZ GIT_SHA1_RAWSZ
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#define GIT_MAX_HEXSZ GIT_SHA1_HEXSZ
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struct object_id {
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unsigned char hash[GIT_MAX_RAWSZ];
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};
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#if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
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#define DTYPE(de) ((de)->d_type)
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#else
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#undef DT_UNKNOWN
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#undef DT_DIR
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#undef DT_REG
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#undef DT_LNK
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#define DT_UNKNOWN 0
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#define DT_DIR 1
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#define DT_REG 2
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#define DT_LNK 3
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#define DTYPE(de) DT_UNKNOWN
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#endif
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/* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
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#define S_IFINVALID 0030000
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/*
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* A "directory link" is a link to another git directory.
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*
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* The value 0160000 is not normally a valid mode, and
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* also just happens to be S_IFDIR + S_IFLNK
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*/
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#define S_IFGITLINK 0160000
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#define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
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/*
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* Some mode bits are also used internally for computations.
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*
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* They *must* not overlap with any valid modes, and they *must* not be emitted
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* to outside world - i.e. appear on disk or network. In other words, it's just
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* temporary fields, which we internally use, but they have to stay in-house.
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*
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* ( such approach is valid, as standard S_IF* fits into 16 bits, and in Git
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* codebase mode is `unsigned int` which is assumed to be at least 32 bits )
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*/
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/* used internally in tree-diff */
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#define S_DIFFTREE_IFXMIN_NEQ 0x80000000
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/*
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* Intensive research over the course of many years has shown that
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* port 9418 is totally unused by anything else. Or
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*
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* Your search - "port 9418" - did not match any documents.
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*
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* as www.google.com puts it.
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*
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* This port has been properly assigned for git use by IANA:
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* git (Assigned-9418) [I06-050728-0001].
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*
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* git 9418/tcp git pack transfer service
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* git 9418/udp git pack transfer service
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*
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* with Linus Torvalds <torvalds@osdl.org> as the point of
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* contact. September 2005.
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*
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* See http://www.iana.org/assignments/port-numbers
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*/
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#define DEFAULT_GIT_PORT 9418
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/*
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* Basic data structures for the directory cache
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*/
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#define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
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struct cache_header {
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uint32_t hdr_signature;
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uint32_t hdr_version;
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uint32_t hdr_entries;
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};
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#define INDEX_FORMAT_LB 2
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#define INDEX_FORMAT_UB 4
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/*
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* The "cache_time" is just the low 32 bits of the
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* time. It doesn't matter if it overflows - we only
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* check it for equality in the 32 bits we save.
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*/
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struct cache_time {
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uint32_t sec;
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uint32_t nsec;
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};
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struct stat_data {
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struct cache_time sd_ctime;
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struct cache_time sd_mtime;
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unsigned int sd_dev;
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unsigned int sd_ino;
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unsigned int sd_uid;
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unsigned int sd_gid;
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unsigned int sd_size;
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};
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struct cache_entry {
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struct hashmap_entry ent;
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struct stat_data ce_stat_data;
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unsigned int ce_mode;
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unsigned int ce_flags;
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unsigned int ce_namelen;
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unsigned int index; /* for link extension */
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struct object_id oid;
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char name[FLEX_ARRAY]; /* more */
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};
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#define CE_STAGEMASK (0x3000)
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#define CE_EXTENDED (0x4000)
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#define CE_VALID (0x8000)
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#define CE_STAGESHIFT 12
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/*
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* Range 0xFFFF0FFF in ce_flags is divided into
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* two parts: in-memory flags and on-disk ones.
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* Flags in CE_EXTENDED_FLAGS will get saved on-disk
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* if you want to save a new flag, add it in
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* CE_EXTENDED_FLAGS
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*
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* In-memory only flags
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*/
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#define CE_UPDATE (1 << 16)
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#define CE_REMOVE (1 << 17)
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#define CE_UPTODATE (1 << 18)
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#define CE_ADDED (1 << 19)
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#define CE_HASHED (1 << 20)
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#define CE_WT_REMOVE (1 << 22) /* remove in work directory */
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#define CE_CONFLICTED (1 << 23)
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#define CE_UNPACKED (1 << 24)
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#define CE_NEW_SKIP_WORKTREE (1 << 25)
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/* used to temporarily mark paths matched by pathspecs */
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#define CE_MATCHED (1 << 26)
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#define CE_UPDATE_IN_BASE (1 << 27)
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#define CE_STRIP_NAME (1 << 28)
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/*
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* Extended on-disk flags
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*/
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#define CE_INTENT_TO_ADD (1 << 29)
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#define CE_SKIP_WORKTREE (1 << 30)
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/* CE_EXTENDED2 is for future extension */
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#define CE_EXTENDED2 (1U << 31)
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#define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE)
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/*
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* Safeguard to avoid saving wrong flags:
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* - CE_EXTENDED2 won't get saved until its semantic is known
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* - Bits in 0x0000FFFF have been saved in ce_flags already
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* - Bits in 0x003F0000 are currently in-memory flags
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*/
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#if CE_EXTENDED_FLAGS & 0x803FFFFF
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#error "CE_EXTENDED_FLAGS out of range"
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#endif
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/* Forward structure decls */
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struct pathspec;
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struct child_process;
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/*
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* Copy the sha1 and stat state of a cache entry from one to
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* another. But we never change the name, or the hash state!
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*/
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static inline void copy_cache_entry(struct cache_entry *dst,
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const struct cache_entry *src)
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{
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unsigned int state = dst->ce_flags & CE_HASHED;
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/* Don't copy hash chain and name */
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memcpy(&dst->ce_stat_data, &src->ce_stat_data,
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offsetof(struct cache_entry, name) -
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offsetof(struct cache_entry, ce_stat_data));
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/* Restore the hash state */
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dst->ce_flags = (dst->ce_flags & ~CE_HASHED) | state;
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}
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static inline unsigned create_ce_flags(unsigned stage)
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{
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return (stage << CE_STAGESHIFT);
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}
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#define ce_namelen(ce) ((ce)->ce_namelen)
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#define ce_size(ce) cache_entry_size(ce_namelen(ce))
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#define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
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#define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
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#define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE)
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#define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
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#define ce_intent_to_add(ce) ((ce)->ce_flags & CE_INTENT_TO_ADD)
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#define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
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static inline unsigned int create_ce_mode(unsigned int mode)
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{
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if (S_ISLNK(mode))
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return S_IFLNK;
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if (S_ISDIR(mode) || S_ISGITLINK(mode))
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return S_IFGITLINK;
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return S_IFREG | ce_permissions(mode);
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}
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static inline unsigned int ce_mode_from_stat(const struct cache_entry *ce,
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unsigned int mode)
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{
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extern int trust_executable_bit, has_symlinks;
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if (!has_symlinks && S_ISREG(mode) &&
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ce && S_ISLNK(ce->ce_mode))
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return ce->ce_mode;
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if (!trust_executable_bit && S_ISREG(mode)) {
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if (ce && S_ISREG(ce->ce_mode))
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return ce->ce_mode;
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return create_ce_mode(0666);
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}
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return create_ce_mode(mode);
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}
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static inline int ce_to_dtype(const struct cache_entry *ce)
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{
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unsigned ce_mode = ntohl(ce->ce_mode);
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if (S_ISREG(ce_mode))
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return DT_REG;
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else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode))
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return DT_DIR;
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else if (S_ISLNK(ce_mode))
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return DT_LNK;
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else
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return DT_UNKNOWN;
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}
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static inline unsigned int canon_mode(unsigned int mode)
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{
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if (S_ISREG(mode))
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return S_IFREG | ce_permissions(mode);
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if (S_ISLNK(mode))
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return S_IFLNK;
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if (S_ISDIR(mode))
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return S_IFDIR;
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return S_IFGITLINK;
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}
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#define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1)
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#define SOMETHING_CHANGED (1 << 0) /* unclassified changes go here */
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#define CE_ENTRY_CHANGED (1 << 1)
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#define CE_ENTRY_REMOVED (1 << 2)
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#define CE_ENTRY_ADDED (1 << 3)
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#define RESOLVE_UNDO_CHANGED (1 << 4)
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#define CACHE_TREE_CHANGED (1 << 5)
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#define SPLIT_INDEX_ORDERED (1 << 6)
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#define UNTRACKED_CHANGED (1 << 7)
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struct split_index;
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struct untracked_cache;
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struct index_state {
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struct cache_entry **cache;
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unsigned int version;
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unsigned int cache_nr, cache_alloc, cache_changed;
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struct string_list *resolve_undo;
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struct cache_tree *cache_tree;
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struct split_index *split_index;
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struct cache_time timestamp;
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unsigned name_hash_initialized : 1,
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initialized : 1;
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struct hashmap name_hash;
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struct hashmap dir_hash;
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unsigned char sha1[20];
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struct untracked_cache *untracked;
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};
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extern struct index_state the_index;
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/* Name hashing */
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extern int test_lazy_init_name_hash(struct index_state *istate, int try_threaded);
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extern void add_name_hash(struct index_state *istate, struct cache_entry *ce);
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extern void remove_name_hash(struct index_state *istate, struct cache_entry *ce);
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extern void free_name_hash(struct index_state *istate);
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#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
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#define active_cache (the_index.cache)
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#define active_nr (the_index.cache_nr)
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#define active_alloc (the_index.cache_alloc)
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#define active_cache_changed (the_index.cache_changed)
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#define active_cache_tree (the_index.cache_tree)
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#define read_cache() read_index(&the_index)
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#define read_cache_from(path) read_index_from(&the_index, (path))
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#define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec))
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#define is_cache_unborn() is_index_unborn(&the_index)
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#define read_cache_unmerged() read_index_unmerged(&the_index)
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#define discard_cache() discard_index(&the_index)
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#define unmerged_cache() unmerged_index(&the_index)
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#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
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#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
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#define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name))
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#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
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#define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
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#define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags))
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#define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags))
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#define chmod_cache_entry(ce, flip) chmod_index_entry(&the_index, (ce), (flip))
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#define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL)
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#define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
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#define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
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#define cache_dir_exists(name, namelen) index_dir_exists(&the_index, (name), (namelen))
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#define cache_file_exists(name, namelen, igncase) index_file_exists(&the_index, (name), (namelen), (igncase))
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#define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen))
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#define resolve_undo_clear() resolve_undo_clear_index(&the_index)
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#define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
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#define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
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#define read_blob_data_from_cache(path, sz) read_blob_data_from_index(&the_index, (path), (sz))
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#endif
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enum object_type {
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OBJ_BAD = -1,
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OBJ_NONE = 0,
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OBJ_COMMIT = 1,
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OBJ_TREE = 2,
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OBJ_BLOB = 3,
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OBJ_TAG = 4,
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/* 5 for future expansion */
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OBJ_OFS_DELTA = 6,
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OBJ_REF_DELTA = 7,
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OBJ_ANY,
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OBJ_MAX
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};
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static inline enum object_type object_type(unsigned int mode)
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{
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return S_ISDIR(mode) ? OBJ_TREE :
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S_ISGITLINK(mode) ? OBJ_COMMIT :
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OBJ_BLOB;
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}
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/* Double-check local_repo_env below if you add to this list. */
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#define GIT_DIR_ENVIRONMENT "GIT_DIR"
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#define GIT_COMMON_DIR_ENVIRONMENT "GIT_COMMON_DIR"
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#define GIT_NAMESPACE_ENVIRONMENT "GIT_NAMESPACE"
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#define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
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#define GIT_PREFIX_ENVIRONMENT "GIT_PREFIX"
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#define GIT_SUPER_PREFIX_ENVIRONMENT "GIT_INTERNAL_SUPER_PREFIX"
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#define GIT_TOPLEVEL_PREFIX_ENVIRONMENT "GIT_INTERNAL_TOPLEVEL_PREFIX"
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#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
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#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
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#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
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#define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
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#define GIT_SHALLOW_FILE_ENVIRONMENT "GIT_SHALLOW_FILE"
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#define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
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#define CONFIG_ENVIRONMENT "GIT_CONFIG"
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#define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS"
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#define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
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#define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
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#define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS"
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#define GIT_REPLACE_REF_BASE_ENVIRONMENT "GIT_REPLACE_REF_BASE"
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#define GITATTRIBUTES_FILE ".gitattributes"
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#define INFOATTRIBUTES_FILE "info/attributes"
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#define ATTRIBUTE_MACRO_PREFIX "[attr]"
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#define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF"
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#define GIT_NOTES_DEFAULT_REF "refs/notes/commits"
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#define GIT_NOTES_DISPLAY_REF_ENVIRONMENT "GIT_NOTES_DISPLAY_REF"
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#define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF"
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#define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE"
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#define GIT_LITERAL_PATHSPECS_ENVIRONMENT "GIT_LITERAL_PATHSPECS"
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#define GIT_GLOB_PATHSPECS_ENVIRONMENT "GIT_GLOB_PATHSPECS"
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|
#define GIT_NOGLOB_PATHSPECS_ENVIRONMENT "GIT_NOGLOB_PATHSPECS"
|
|
#define GIT_ICASE_PATHSPECS_ENVIRONMENT "GIT_ICASE_PATHSPECS"
|
|
#define GIT_QUARANTINE_ENVIRONMENT "GIT_QUARANTINE_PATH"
|
|
|
|
/*
|
|
* This environment variable is expected to contain a boolean indicating
|
|
* whether we should or should not treat:
|
|
*
|
|
* GIT_DIR=foo.git git ...
|
|
*
|
|
* as if GIT_WORK_TREE=. was given. It's not expected that users will make use
|
|
* of this, but we use it internally to communicate to sub-processes that we
|
|
* are in a bare repo. If not set, defaults to true.
|
|
*/
|
|
#define GIT_IMPLICIT_WORK_TREE_ENVIRONMENT "GIT_IMPLICIT_WORK_TREE"
|
|
|
|
/*
|
|
* Repository-local GIT_* environment variables; these will be cleared
|
|
* when git spawns a sub-process that runs inside another repository.
|
|
* The array is NULL-terminated, which makes it easy to pass in the "env"
|
|
* parameter of a run-command invocation, or to do a simple walk.
|
|
*/
|
|
extern const char * const local_repo_env[];
|
|
|
|
extern void setup_git_env(void);
|
|
|
|
/*
|
|
* Returns true iff we have a configured git repository (either via
|
|
* setup_git_directory, or in the environment via $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);
|
|
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(void);
|
|
extern int 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);
|
|
|
|
/*
|
|
* 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);
|
|
|
|
/*
|
|
* Return 1 if the given path is the root of a git repository or
|
|
* submodule, else 0. Will not return 1 for bare repositories with the
|
|
* exception of creating a bare repository in "foo/.git" and calling
|
|
* is_git_repository("foo").
|
|
*
|
|
* If we run into read errors, we err on the side of saying "yes, it is",
|
|
* 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);
|
|
|
|
#define READ_GITFILE_ERR_STAT_FAILED 1
|
|
#define READ_GITFILE_ERR_NOT_A_FILE 2
|
|
#define READ_GITFILE_ERR_OPEN_FAILED 3
|
|
#define READ_GITFILE_ERR_READ_FAILED 4
|
|
#define READ_GITFILE_ERR_INVALID_FORMAT 5
|
|
#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);
|
|
#define read_gitfile(path) read_gitfile_gently((path), NULL)
|
|
extern 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);
|
|
|
|
#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
|
|
|
|
extern 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
|
|
* state. The result is appended to commondir and gitdir. If the discovered
|
|
* gitdir does not correspond to a worktree, then 'commondir' and 'gitdir' will
|
|
* 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);
|
|
|
|
/*
|
|
* Concatenate "prefix" (if len is non-zero) and "path", with no
|
|
* connecting characters (so "prefix" should end with a "/").
|
|
* Unlike prefix_path, this should be used if the named file does
|
|
* not have to interact with index entry; i.e. name of a random file
|
|
* on the filesystem.
|
|
*
|
|
* 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);
|
|
|
|
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);
|
|
|
|
#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);
|
|
|
|
extern void sanitize_stdfds(void);
|
|
extern int daemonize(void);
|
|
|
|
#define alloc_nr(x) (((x)+16)*3/2)
|
|
|
|
/*
|
|
* Realloc the buffer pointed at by variable 'x' so that it can hold
|
|
* at least 'nr' entries; the number of entries currently allocated
|
|
* is 'alloc', using the standard growing factor alloc_nr() macro.
|
|
*
|
|
* DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'.
|
|
*/
|
|
#define ALLOC_GROW(x, nr, alloc) \
|
|
do { \
|
|
if ((nr) > alloc) { \
|
|
if (alloc_nr(alloc) < (nr)) \
|
|
alloc = (nr); \
|
|
else \
|
|
alloc = alloc_nr(alloc); \
|
|
REALLOC_ARRAY(x, alloc); \
|
|
} \
|
|
} while (0)
|
|
|
|
/* Initialize and use the cache information */
|
|
struct lock_file;
|
|
extern int read_index(struct index_state *);
|
|
extern int read_index_preload(struct index_state *, const struct pathspec *pathspec);
|
|
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);
|
|
extern int is_index_unborn(struct index_state *);
|
|
extern int read_index_unmerged(struct index_state *);
|
|
#define COMMIT_LOCK (1 << 0)
|
|
#define CLOSE_LOCK (1 << 1)
|
|
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 *);
|
|
extern int verify_path(const char *path);
|
|
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);
|
|
|
|
/*
|
|
* Searches for an entry defined by name and namelen in the given index.
|
|
* If the return value is positive (including 0) it is the position of an
|
|
* exact match. If the return value is negative, the negated value minus 1
|
|
* is the position where the entry would be inserted.
|
|
* Example: The current index consists of these files and its stages:
|
|
*
|
|
* b#0, d#0, f#1, f#3
|
|
*
|
|
* index_name_pos(&index, "a", 1) -> -1
|
|
* index_name_pos(&index, "b", 1) -> 0
|
|
* index_name_pos(&index, "c", 1) -> -2
|
|
* index_name_pos(&index, "d", 1) -> 1
|
|
* index_name_pos(&index, "e", 1) -> -3
|
|
* 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);
|
|
|
|
#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 */
|
|
#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);
|
|
|
|
/* Remove entry, return true if there are more entries to go. */
|
|
extern 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);
|
|
#define ADD_CACHE_VERBOSE 1
|
|
#define ADD_CACHE_PRETEND 2
|
|
#define ADD_CACHE_IGNORE_ERRORS 4
|
|
#define ADD_CACHE_IGNORE_REMOVAL 8
|
|
#define ADD_CACHE_INTENT 16
|
|
/*
|
|
* These two are used to add the contents of the file at path
|
|
* to the index, marking the working tree up-to-date by storing
|
|
* the cached stat info in the resulting cache entry. A caller
|
|
* that has already run lstat(2) on the path can call
|
|
* add_to_index(), and all others can call add_file_to_index();
|
|
* 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);
|
|
|
|
extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, unsigned int refresh_options);
|
|
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 *);
|
|
|
|
/* do stat comparison even if CE_VALID is true */
|
|
#define CE_MATCH_IGNORE_VALID 01
|
|
/* do not check the contents but report dirty on racily-clean entries */
|
|
#define CE_MATCH_RACY_IS_DIRTY 02
|
|
/* do stat comparison even if CE_SKIP_WORKTREE is true */
|
|
#define CE_MATCH_IGNORE_SKIP_WORKTREE 04
|
|
/* ignore non-existent files during stat update */
|
|
#define CE_MATCH_IGNORE_MISSING 0x08
|
|
/* enable stat refresh */
|
|
#define CE_MATCH_REFRESH 0x10
|
|
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 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);
|
|
|
|
/*
|
|
* 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 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);
|
|
|
|
#define REFRESH_REALLY 0x0001 /* ignore_valid */
|
|
#define REFRESH_UNMERGED 0x0002 /* allow unmerged */
|
|
#define REFRESH_QUIET 0x0004 /* be quiet about it */
|
|
#define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
|
|
#define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */
|
|
#define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */
|
|
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);
|
|
|
|
extern void update_index_if_able(struct index_state *, struct lock_file *);
|
|
|
|
extern int hold_locked_index(struct lock_file *, int);
|
|
extern void set_alternate_index_output(const char *);
|
|
|
|
extern int verify_index_checksum;
|
|
|
|
/* Environment bits from configuration mechanism */
|
|
extern int trust_executable_bit;
|
|
extern int trust_ctime;
|
|
extern int check_stat;
|
|
extern int quote_path_fully;
|
|
extern int has_symlinks;
|
|
extern int minimum_abbrev, default_abbrev;
|
|
extern int ignore_case;
|
|
extern int assume_unchanged;
|
|
extern int prefer_symlink_refs;
|
|
extern int warn_ambiguous_refs;
|
|
extern int warn_on_object_refname_ambiguity;
|
|
extern const char *apply_default_whitespace;
|
|
extern const char *apply_default_ignorewhitespace;
|
|
extern const char *git_attributes_file;
|
|
extern const char *git_hooks_path;
|
|
extern int zlib_compression_level;
|
|
extern int core_compression_level;
|
|
extern int pack_compression_level;
|
|
extern size_t packed_git_window_size;
|
|
extern size_t packed_git_limit;
|
|
extern size_t delta_base_cache_limit;
|
|
extern unsigned long big_file_threshold;
|
|
extern unsigned long pack_size_limit_cfg;
|
|
|
|
/*
|
|
* Accessors for the core.sharedrepository config which lazy-load the value
|
|
* from the config (if not already set). The "reset" function can be
|
|
* used to unset "set" or cached value, meaning that the value will be loaded
|
|
* fresh from the config file on the next call to get_shared_repository().
|
|
*/
|
|
void set_shared_repository(int value);
|
|
int get_shared_repository(void);
|
|
void reset_shared_repository(void);
|
|
|
|
/*
|
|
* Do replace refs need to be checked this run? This variable is
|
|
* initialized to true unless --no-replace-object is used or
|
|
* $GIT_NO_REPLACE_OBJECTS is set, but is set to false by some
|
|
* commands that do not want replace references to be active. As an
|
|
* optimization it is also set to false if replace references have
|
|
* been sought but there were none.
|
|
*/
|
|
extern int check_replace_refs;
|
|
extern char *git_replace_ref_base;
|
|
|
|
extern int fsync_object_files;
|
|
extern int core_preload_index;
|
|
extern int core_apply_sparse_checkout;
|
|
extern int precomposed_unicode;
|
|
extern int protect_hfs;
|
|
extern int protect_ntfs;
|
|
|
|
/*
|
|
* Include broken refs in all ref iterations, which will
|
|
* generally choke dangerous operations rather than letting
|
|
* them silently proceed without taking the broken ref into
|
|
* account.
|
|
*/
|
|
extern int ref_paranoia;
|
|
|
|
/*
|
|
* The character that begins a commented line in user-editable file
|
|
* that is subject to stripspace.
|
|
*/
|
|
extern char comment_line_char;
|
|
extern int auto_comment_line_char;
|
|
|
|
/* Windows only */
|
|
enum hide_dotfiles_type {
|
|
HIDE_DOTFILES_FALSE = 0,
|
|
HIDE_DOTFILES_TRUE,
|
|
HIDE_DOTFILES_DOTGITONLY
|
|
};
|
|
extern enum hide_dotfiles_type hide_dotfiles;
|
|
|
|
enum log_refs_config {
|
|
LOG_REFS_UNSET = -1,
|
|
LOG_REFS_NONE = 0,
|
|
LOG_REFS_NORMAL,
|
|
LOG_REFS_ALWAYS
|
|
};
|
|
extern enum log_refs_config log_all_ref_updates;
|
|
|
|
enum branch_track {
|
|
BRANCH_TRACK_UNSPECIFIED = -1,
|
|
BRANCH_TRACK_NEVER = 0,
|
|
BRANCH_TRACK_REMOTE,
|
|
BRANCH_TRACK_ALWAYS,
|
|
BRANCH_TRACK_EXPLICIT,
|
|
BRANCH_TRACK_OVERRIDE
|
|
};
|
|
|
|
enum rebase_setup_type {
|
|
AUTOREBASE_NEVER = 0,
|
|
AUTOREBASE_LOCAL,
|
|
AUTOREBASE_REMOTE,
|
|
AUTOREBASE_ALWAYS
|
|
};
|
|
|
|
enum push_default_type {
|
|
PUSH_DEFAULT_NOTHING = 0,
|
|
PUSH_DEFAULT_MATCHING,
|
|
PUSH_DEFAULT_SIMPLE,
|
|
PUSH_DEFAULT_UPSTREAM,
|
|
PUSH_DEFAULT_CURRENT,
|
|
PUSH_DEFAULT_UNSPECIFIED
|
|
};
|
|
|
|
extern enum branch_track git_branch_track;
|
|
extern enum rebase_setup_type autorebase;
|
|
extern enum push_default_type push_default;
|
|
|
|
enum object_creation_mode {
|
|
OBJECT_CREATION_USES_HARDLINKS = 0,
|
|
OBJECT_CREATION_USES_RENAMES = 1
|
|
};
|
|
|
|
extern enum object_creation_mode object_creation_mode;
|
|
|
|
extern char *notes_ref_name;
|
|
|
|
extern int grafts_replace_parents;
|
|
|
|
/*
|
|
* GIT_REPO_VERSION is the version we write by default. The
|
|
* _READ variant is the highest number we know how to
|
|
* handle.
|
|
*/
|
|
#define GIT_REPO_VERSION 0
|
|
#define GIT_REPO_VERSION_READ 1
|
|
extern int repository_format_precious_objects;
|
|
|
|
struct repository_format {
|
|
int version;
|
|
int precious_objects;
|
|
int is_bare;
|
|
char *work_tree;
|
|
struct string_list unknown_extensions;
|
|
};
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
int read_repository_format(struct repository_format *format, const char *path);
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
int verify_repository_format(const struct repository_format *format,
|
|
struct strbuf *err);
|
|
|
|
/*
|
|
* Check the repository format version in the path found in get_git_dir(),
|
|
* and die if it is a version we don't understand. Generally one would
|
|
* set_git_dir() before calling this, and use it only for "are we in a valid
|
|
* repo?".
|
|
*/
|
|
extern void check_repository_format(void);
|
|
|
|
#define MTIME_CHANGED 0x0001
|
|
#define CTIME_CHANGED 0x0002
|
|
#define OWNER_CHANGED 0x0004
|
|
#define MODE_CHANGED 0x0008
|
|
#define INODE_CHANGED 0x0010
|
|
#define DATA_CHANGED 0x0020
|
|
#define TYPE_CHANGED 0x0040
|
|
|
|
/*
|
|
* Return the name of the file in the local object database that would
|
|
* be used to store a loose object with the specified sha1. The
|
|
* return value is a pointer to a statically allocated buffer that is
|
|
* overwritten each time the function is called.
|
|
*/
|
|
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.
|
|
*
|
|
* The non-`_r` version returns a static buffer which remains valid until 4
|
|
* more calls to find_unique_abbrev are made.
|
|
*
|
|
* The `_r` variant writes to a buffer supplied by the caller, which must be at
|
|
* least `GIT_SHA1_HEXSZ + 1` bytes. The return value is the number of bytes
|
|
* written (excluding the NUL terminator).
|
|
*
|
|
* 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 unsigned char *sha1, int len);
|
|
extern int find_unique_abbrev_r(char *hex, const unsigned char *sha1, int len);
|
|
|
|
extern const unsigned char null_sha1[GIT_MAX_RAWSZ];
|
|
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;
|
|
}
|
|
|
|
static inline int oidcmp(const struct object_id *oid1, const struct object_id *oid2)
|
|
{
|
|
return hashcmp(oid1->hash, oid2->hash);
|
|
}
|
|
|
|
static inline int is_null_sha1(const unsigned char *sha1)
|
|
{
|
|
return !hashcmp(sha1, null_sha1);
|
|
}
|
|
|
|
static inline int is_null_oid(const struct object_id *oid)
|
|
{
|
|
return !hashcmp(oid->hash, null_sha1);
|
|
}
|
|
|
|
static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
|
|
{
|
|
memcpy(sha_dst, sha_src, GIT_SHA1_RAWSZ);
|
|
}
|
|
|
|
static inline void oidcpy(struct object_id *dst, const struct object_id *src)
|
|
{
|
|
hashcpy(dst->hash, src->hash);
|
|
}
|
|
|
|
static inline struct object_id *oiddup(const struct object_id *src)
|
|
{
|
|
struct object_id *dst = xmalloc(sizeof(struct object_id));
|
|
oidcpy(dst, src);
|
|
return dst;
|
|
}
|
|
|
|
static inline void hashclr(unsigned char *hash)
|
|
{
|
|
memset(hash, 0, GIT_SHA1_RAWSZ);
|
|
}
|
|
|
|
static inline void oidclr(struct object_id *oid)
|
|
{
|
|
hashclr(oid->hash);
|
|
}
|
|
|
|
|
|
#define EMPTY_TREE_SHA1_HEX \
|
|
"4b825dc642cb6eb9a060e54bf8d69288fbee4904"
|
|
#define EMPTY_TREE_SHA1_BIN_LITERAL \
|
|
"\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \
|
|
"\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04"
|
|
extern const struct object_id empty_tree_oid;
|
|
#define EMPTY_TREE_SHA1_BIN (empty_tree_oid.hash)
|
|
|
|
#define EMPTY_BLOB_SHA1_HEX \
|
|
"e69de29bb2d1d6434b8b29ae775ad8c2e48c5391"
|
|
#define EMPTY_BLOB_SHA1_BIN_LITERAL \
|
|
"\xe6\x9d\xe2\x9b\xb2\xd1\xd6\x43\x4b\x8b" \
|
|
"\x29\xae\x77\x5a\xd8\xc2\xe4\x8c\x53\x91"
|
|
extern const struct object_id empty_blob_oid;
|
|
#define EMPTY_BLOB_SHA1_BIN (empty_blob_oid.hash)
|
|
|
|
|
|
static inline int is_empty_blob_sha1(const unsigned char *sha1)
|
|
{
|
|
return !hashcmp(sha1, EMPTY_BLOB_SHA1_BIN);
|
|
}
|
|
|
|
static inline int is_empty_blob_oid(const struct object_id *oid)
|
|
{
|
|
return !hashcmp(oid->hash, EMPTY_BLOB_SHA1_BIN);
|
|
}
|
|
|
|
static inline int is_empty_tree_sha1(const unsigned char *sha1)
|
|
{
|
|
return !hashcmp(sha1, EMPTY_TREE_SHA1_BIN);
|
|
}
|
|
|
|
static inline int is_empty_tree_oid(const struct object_id *oid)
|
|
{
|
|
return !hashcmp(oid->hash, EMPTY_TREE_SHA1_BIN);
|
|
}
|
|
|
|
/* set default permissions by passing mode arguments to open(2) */
|
|
int git_mkstemps_mode(char *pattern, int suffix_len, int mode);
|
|
int git_mkstemp_mode(char *pattern, int mode);
|
|
|
|
/*
|
|
* NOTE NOTE NOTE!!
|
|
*
|
|
* PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
|
|
* not be changed. Old repositories have core.sharedrepository written in
|
|
* numeric format, and therefore these values are preserved for compatibility
|
|
* reasons.
|
|
*/
|
|
enum sharedrepo {
|
|
PERM_UMASK = 0,
|
|
OLD_PERM_GROUP = 1,
|
|
OLD_PERM_EVERYBODY = 2,
|
|
PERM_GROUP = 0660,
|
|
PERM_EVERYBODY = 0664
|
|
};
|
|
int git_config_perm(const char *var, const char *value);
|
|
int adjust_shared_perm(const char *path);
|
|
|
|
/*
|
|
* Create the directory containing the named path, using care to be
|
|
* somewhat safe against races. Return one of the scld_error values to
|
|
* indicate success/failure. On error, set errno to describe the
|
|
* problem.
|
|
*
|
|
* SCLD_VANISHED indicates that one of the ancestor directories of the
|
|
* path existed at one point during the function call and then
|
|
* suddenly vanished, probably because another process pruned the
|
|
* directory while we were working. To be robust against this kind of
|
|
* race, callers might want to try invoking the function again when it
|
|
* returns SCLD_VANISHED.
|
|
*
|
|
* safe_create_leading_directories() temporarily changes path while it
|
|
* is working but restores it before returning.
|
|
* safe_create_leading_directories_const() doesn't modify path, even
|
|
* temporarily.
|
|
*/
|
|
enum scld_error {
|
|
SCLD_OK = 0,
|
|
SCLD_FAILED = -1,
|
|
SCLD_PERMS = -2,
|
|
SCLD_EXISTS = -3,
|
|
SCLD_VANISHED = -4
|
|
};
|
|
enum scld_error safe_create_leading_directories(char *path);
|
|
enum scld_error safe_create_leading_directories_const(const char *path);
|
|
|
|
/*
|
|
* Callback function for raceproof_create_file(). This function is
|
|
* expected to do something that makes dirname(path) permanent despite
|
|
* the fact that other processes might be cleaning up empty
|
|
* directories at the same time. Usually it will create a file named
|
|
* path, but alternatively it could create another file in that
|
|
* directory, or even chdir() into that directory. The function should
|
|
* return 0 if the action was completed successfully. On error, it
|
|
* should return a nonzero result and set errno.
|
|
* raceproof_create_file() treats two errno values specially:
|
|
*
|
|
* - ENOENT -- dirname(path) does not exist. In this case,
|
|
* raceproof_create_file() tries creating dirname(path)
|
|
* (and any parent directories, if necessary) and calls
|
|
* the function again.
|
|
*
|
|
* - EISDIR -- the file already exists and is a directory. In this
|
|
* case, raceproof_create_file() removes the directory if
|
|
* it is empty (and recursively any empty directories that
|
|
* it contains) and calls the function again.
|
|
*
|
|
* Any other errno causes raceproof_create_file() to fail with the
|
|
* callback's return value and errno.
|
|
*
|
|
* Obviously, this function should be OK with being called again if it
|
|
* fails with ENOENT or EISDIR. In other scenarios it will not be
|
|
* called again.
|
|
*/
|
|
typedef int create_file_fn(const char *path, void *cb);
|
|
|
|
/*
|
|
* Create a file in dirname(path) by calling fn, creating leading
|
|
* directories if necessary. Retry a few times in case we are racing
|
|
* with another process that is trying to clean up the directory that
|
|
* contains path. See the documentation for create_file_fn for more
|
|
* details.
|
|
*
|
|
* Return the value and set the errno that resulted from the most
|
|
* recent call of fn. fn is always called at least once, and will be
|
|
* called more than once if it returns ENOENT or EISDIR.
|
|
*/
|
|
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);
|
|
const char *enter_repo(const char *path, int strict);
|
|
static inline int is_absolute_path(const char *path)
|
|
{
|
|
return is_dir_sep(path[0]) || has_dos_drive_prefix(path);
|
|
}
|
|
int is_directory(const char *);
|
|
char *strbuf_realpath(struct strbuf *resolved, const char *path,
|
|
int die_on_error);
|
|
const char *real_path(const char *path);
|
|
const char *real_path_if_valid(const char *path);
|
|
char *real_pathdup(const char *path, int die_on_error);
|
|
const char *absolute_path(const char *path);
|
|
char *absolute_pathdup(const char *path);
|
|
const char *remove_leading_path(const char *in, const char *prefix);
|
|
const char *relative_path(const char *in, const char *prefix, struct strbuf *sb);
|
|
int normalize_path_copy_len(char *dst, const char *src, int *prefix_len);
|
|
int normalize_path_copy(char *dst, const char *src);
|
|
int longest_ancestor_length(const char *path, struct string_list *prefixes);
|
|
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 $XDG_CONFIG_HOME is non-empty, otherwise
|
|
* "$HOME/.config/git/$filename". Return NULL upon error.
|
|
*/
|
|
extern char *xdg_config_home(const char *filename);
|
|
|
|
/**
|
|
* Return a newly allocated string with the evaluation of
|
|
* "$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);
|
|
|
|
extern void *read_sha1_file_extended(const unsigned char *sha1,
|
|
enum object_type *type,
|
|
unsigned long *size, int lookup_replace);
|
|
static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
|
|
{
|
|
return read_sha1_file_extended(sha1, type, size, 1);
|
|
}
|
|
|
|
/*
|
|
* This internal function is only declared here for the benefit of
|
|
* lookup_replace_object(). Please do not call it directly.
|
|
*/
|
|
extern const unsigned char *do_lookup_replace_object(const unsigned char *sha1);
|
|
|
|
/*
|
|
* If object sha1 should be replaced, return the replacement object's
|
|
* name (replaced recursively, if necessary). The return value is
|
|
* either sha1 or a pointer to a permanently-allocated value. When
|
|
* object replacement is suppressed, always return sha1.
|
|
*/
|
|
static inline const unsigned char *lookup_replace_object(const unsigned char *sha1)
|
|
{
|
|
if (!check_replace_refs)
|
|
return sha1;
|
|
return do_lookup_replace_object(sha1);
|
|
}
|
|
|
|
/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
|
|
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 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);
|
|
#define git_open(name) git_open_cloexec(name, O_RDONLY)
|
|
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,
|
|
* to allow streaming of large blobs.
|
|
*
|
|
* Returns 0 on success, negative on error (details may be written to stderr).
|
|
*/
|
|
int read_loose_object(const char *path,
|
|
const unsigned char *expected_sha1,
|
|
enum object_type *type,
|
|
unsigned long *size,
|
|
void **contents);
|
|
|
|
/*
|
|
* Convenience for sha1_object_info_extended() with a NULL struct
|
|
* object_info. OBJECT_INFO_SKIP_CACHED is automatically set; pass
|
|
* nonzero flags to also set other flags.
|
|
*/
|
|
extern int has_sha1_file_with_flags(const unsigned char *sha1, int flags);
|
|
static inline int has_sha1_file(const unsigned char *sha1)
|
|
{
|
|
return has_sha1_file_with_flags(sha1, 0);
|
|
}
|
|
|
|
/* Same as the above, except for struct object_id. */
|
|
extern int has_object_file(const struct object_id *oid);
|
|
extern int has_object_file_with_flags(const struct object_id *oid, int flags);
|
|
|
|
/*
|
|
* Return true iff an alternate object database has a loose object
|
|
* with the specified name. This function does not respect replace
|
|
* references.
|
|
*/
|
|
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 */
|
|
extern 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)
|
|
{
|
|
return hexval_table[c];
|
|
}
|
|
|
|
/*
|
|
* Convert two consecutive hexadecimal digits into a char. Return a
|
|
* negative value on error. Don't run over the end of short strings.
|
|
*/
|
|
static inline int hex2chr(const char *s)
|
|
{
|
|
int val = hexval(s[0]);
|
|
return (val < 0) ? val : (val << 4) | hexval(s[1]);
|
|
}
|
|
|
|
/* Convert to/from hex/sha1 representation */
|
|
#define MINIMUM_ABBREV minimum_abbrev
|
|
#define DEFAULT_ABBREV default_abbrev
|
|
|
|
/* used when the code does not know or care what the default abbrev is */
|
|
#define FALLBACK_DEFAULT_ABBREV 7
|
|
|
|
struct object_context {
|
|
unsigned char tree[20];
|
|
unsigned mode;
|
|
/*
|
|
* symlink_path is only used by get_tree_entry_follow_symlinks,
|
|
* and only for symlinks that point outside the repository.
|
|
*/
|
|
struct strbuf symlink_path;
|
|
/*
|
|
* If GET_SHA1_RECORD_PATH is set, this will record path (if any)
|
|
* found when resolving the name. The caller is responsible for
|
|
* releasing the memory.
|
|
*/
|
|
char *path;
|
|
};
|
|
|
|
#define GET_SHA1_QUIETLY 01
|
|
#define GET_SHA1_COMMIT 02
|
|
#define GET_SHA1_COMMITTISH 04
|
|
#define GET_SHA1_TREE 010
|
|
#define GET_SHA1_TREEISH 020
|
|
#define GET_SHA1_BLOB 040
|
|
#define GET_SHA1_FOLLOW_SYMLINKS 0100
|
|
#define GET_SHA1_RECORD_PATH 0200
|
|
#define GET_SHA1_ONLY_TO_DIE 04000
|
|
|
|
#define GET_SHA1_DISAMBIGUATORS \
|
|
(GET_SHA1_COMMIT | GET_SHA1_COMMITTISH | \
|
|
GET_SHA1_TREE | GET_SHA1_TREEISH | \
|
|
GET_SHA1_BLOB)
|
|
|
|
extern int get_sha1(const char *str, unsigned char *sha1);
|
|
extern int get_sha1_commit(const char *str, unsigned char *sha1);
|
|
extern int get_sha1_committish(const char *str, unsigned char *sha1);
|
|
extern int get_sha1_tree(const char *str, unsigned char *sha1);
|
|
extern int get_sha1_treeish(const char *str, unsigned char *sha1);
|
|
extern int get_sha1_blob(const char *str, unsigned char *sha1);
|
|
extern void maybe_die_on_misspelt_object_name(const char *name, const char *prefix);
|
|
extern int get_sha1_with_context(const char *str, unsigned flags, unsigned char *sha1, struct object_context *oc);
|
|
|
|
extern int get_oid(const char *str, struct object_id *oid);
|
|
|
|
typedef int each_abbrev_fn(const struct object_id *oid, void *);
|
|
extern int for_each_abbrev(const char *prefix, each_abbrev_fn, void *);
|
|
|
|
extern int set_disambiguate_hint_config(const char *var, const char *value);
|
|
|
|
/*
|
|
* Try to read a SHA1 in hexadecimal format from the 40 characters
|
|
* starting at hex. Write the 20-byte result to sha1 in binary form.
|
|
* Return 0 on success. Reading stops if a NUL is encountered in the
|
|
* 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);
|
|
|
|
/*
|
|
* 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
|
|
* convenience.
|
|
*
|
|
* The non-`_r` variant returns a static buffer, but uses a ring of 4
|
|
* buffers, making it safe to make multiple calls for a single statement, like:
|
|
*
|
|
* 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 */
|
|
|
|
/*
|
|
* Parse a 40-character hexadecimal object ID starting from hex, updating the
|
|
* pointer specified by end when parsing stops. The resulting object ID is
|
|
* stored in oid. Returns 0 on success. Parsing will stop on the first NUL or
|
|
* 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);
|
|
|
|
/*
|
|
* This reads short-hand syntax that not only evaluates to a commit
|
|
* object name, but also can act as if the end user spelled the name
|
|
* of the branch from the command line.
|
|
*
|
|
* - "@{-N}" finds the name of the Nth previous branch we were on, and
|
|
* places the name of the branch in the given buf and returns the
|
|
* number of characters parsed if successful.
|
|
*
|
|
* - "<branch>@{upstream}" finds the name of the other ref that
|
|
* <branch> is configured to merge with (missing <branch> defaults
|
|
* to the current branch), and places the name of the branch in the
|
|
* given buf and returns the number of characters parsed if
|
|
* successful.
|
|
*
|
|
* If the input is not of the accepted format, it returns a negative
|
|
* number to signal an error.
|
|
*
|
|
* If the input was ok but there are not N branch switches in the
|
|
* reflog, it returns 0.
|
|
*
|
|
* If "allowed" is non-zero, it is a treated as a bitfield of allowable
|
|
* expansions: local branches ("refs/heads/"), remote branches
|
|
* ("refs/remotes/"), or "HEAD". If no "allowed" bits are set, any expansion is
|
|
* allowed, even ones to refs outside of those namespaces.
|
|
*/
|
|
#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 unsigned char *sha1,
|
|
const char *required_type,
|
|
unsigned long *size,
|
|
unsigned char *sha1_ret);
|
|
|
|
extern struct object *peel_to_type(const char *name, int namelen,
|
|
struct object *o, enum object_type);
|
|
|
|
struct date_mode {
|
|
enum date_mode_type {
|
|
DATE_NORMAL = 0,
|
|
DATE_RELATIVE,
|
|
DATE_SHORT,
|
|
DATE_ISO8601,
|
|
DATE_ISO8601_STRICT,
|
|
DATE_RFC2822,
|
|
DATE_STRFTIME,
|
|
DATE_RAW,
|
|
DATE_UNIX
|
|
} type;
|
|
const char *strftime_fmt;
|
|
int local;
|
|
};
|
|
|
|
/*
|
|
* Convenience helper for passing a constant type, like:
|
|
*
|
|
* show_date(t, tz, DATE_MODE(NORMAL));
|
|
*/
|
|
#define DATE_MODE(t) date_mode_from_type(DATE_##t)
|
|
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,
|
|
struct strbuf *timebuf);
|
|
int parse_date(const char *date, struct strbuf *out);
|
|
int parse_date_basic(const char *date, timestamp_t *timestamp, int *offset);
|
|
int parse_expiry_date(const char *date, timestamp_t *timestamp);
|
|
void datestamp(struct strbuf *out);
|
|
#define approxidate(s) approxidate_careful((s), NULL)
|
|
timestamp_t approxidate_careful(const char *, int *);
|
|
timestamp_t approxidate_relative(const char *date, const struct timeval *now);
|
|
void parse_date_format(const char *format, struct date_mode *mode);
|
|
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_pager(int stdout_is_tty);
|
|
extern int git_ident_config(const char *, const char *, void *);
|
|
extern void reset_ident_date(void);
|
|
|
|
struct ident_split {
|
|
const char *name_begin;
|
|
const char *name_end;
|
|
const char *mail_begin;
|
|
const char *mail_end;
|
|
const char *date_begin;
|
|
const char *date_end;
|
|
const char *tz_begin;
|
|
const char *tz_end;
|
|
};
|
|
/*
|
|
* 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);
|
|
|
|
/*
|
|
* Like show_date, but pull the timestamp and tz parameters from
|
|
* the ident_split. It will also sanity-check the values and produce
|
|
* a well-known sentinel date if they appear bogus.
|
|
*/
|
|
const char *show_ident_date(const struct ident_split *id,
|
|
const struct date_mode *mode);
|
|
|
|
/*
|
|
* Compare split idents for equality or strict ordering. Note that we
|
|
* compare only the ident part of the line, ignoring any timestamp.
|
|
*
|
|
* 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 *);
|
|
|
|
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,
|
|
refresh_cache:1;
|
|
};
|
|
#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);
|
|
|
|
struct cache_def {
|
|
struct strbuf path;
|
|
int flags;
|
|
int track_flags;
|
|
int prefix_len_stat_func;
|
|
};
|
|
#define CACHE_DEF_INIT { STRBUF_INIT, 0, 0, 0 }
|
|
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);
|
|
|
|
extern struct alternate_object_database {
|
|
struct alternate_object_database *next;
|
|
|
|
/* see alt_scratch_buf() */
|
|
struct strbuf scratch;
|
|
size_t base_len;
|
|
|
|
/*
|
|
* Used to store the results of readdir(3) calls when searching
|
|
* for unique abbreviated hashes. This cache is never
|
|
* invalidated, thus it's racy and not necessarily accurate.
|
|
* That's fine for its purpose; don't use it for tasks requiring
|
|
* greater accuracy!
|
|
*/
|
|
char loose_objects_subdir_seen[256];
|
|
struct oid_array loose_objects_cache;
|
|
|
|
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*);
|
|
|
|
/*
|
|
* Allocate a "struct alternate_object_database" but do _not_ actually
|
|
* add it to the list of alternates.
|
|
*/
|
|
struct alternate_object_database *alloc_alt_odb(const char *dir);
|
|
|
|
/*
|
|
* Add the directory to the on-disk alternates file; the new entry will also
|
|
* take effect in the current process.
|
|
*/
|
|
extern void add_to_alternates_file(const char *dir);
|
|
|
|
/*
|
|
* Add the directory to the in-memory list of alternates (along with any
|
|
* recursive alternates it points to), but do not modify the on-disk alternates
|
|
* file.
|
|
*/
|
|
extern void add_to_alternates_memory(const char *dir);
|
|
|
|
/*
|
|
* Returns a scratch strbuf pre-filled with the alternate object directory,
|
|
* including a trailing slash, which can be used to access paths in the
|
|
* alternate. Always use this over direct access to alt->scratch, as it
|
|
* cleans up any previous use of the scratch buffer.
|
|
*/
|
|
extern struct strbuf *alt_scratch_buf(struct alternate_object_database *alt);
|
|
|
|
struct pack_window {
|
|
struct pack_window *next;
|
|
unsigned char *base;
|
|
off_t offset;
|
|
size_t len;
|
|
unsigned int last_used;
|
|
unsigned int inuse_cnt;
|
|
};
|
|
|
|
extern struct packed_git {
|
|
struct packed_git *next;
|
|
struct pack_window *windows;
|
|
off_t pack_size;
|
|
const void *index_data;
|
|
size_t index_size;
|
|
uint32_t num_objects;
|
|
uint32_t num_bad_objects;
|
|
unsigned char *bad_object_sha1;
|
|
int index_version;
|
|
time_t mtime;
|
|
int pack_fd;
|
|
unsigned pack_local:1,
|
|
pack_keep:1,
|
|
freshened:1,
|
|
do_not_close:1;
|
|
unsigned char sha1[20];
|
|
struct revindex_entry *revindex;
|
|
/* something like ".git/objects/pack/xxxxx.pack" */
|
|
char pack_name[FLEX_ARRAY]; /* more */
|
|
} *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;
|
|
|
|
struct pack_entry {
|
|
off_t offset;
|
|
unsigned char sha1[20];
|
|
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
|
|
* usual "XXXXXX" trailer, and the resulting filename is written into the
|
|
* "template" buffer. Returns the open descriptor.
|
|
*/
|
|
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.
|
|
*/
|
|
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:
|
|
*
|
|
* - loose_object is called for each loose object we find.
|
|
*
|
|
* - loose_cruft is called for any files that do not appear to be
|
|
* loose objects. Note that we only look in the loose object
|
|
* directories "objects/[0-9a-f]{2}/", so we will not report
|
|
* "objects/foobar" as cruft.
|
|
*
|
|
* - loose_subdir is called for each top-level hashed subdirectory
|
|
* of the object directory (e.g., "$OBJDIR/f0"). It is called
|
|
* after the objects in the directory are processed.
|
|
*
|
|
* Any callback that is NULL will be ignored. Callbacks returning non-zero
|
|
* will end the iteration.
|
|
*
|
|
* In the "buf" variant, "path" is a strbuf which will also be used as a
|
|
* scratch buffer, but restored to its original contents before
|
|
* the function returns.
|
|
*/
|
|
typedef int each_loose_object_fn(const struct object_id *oid,
|
|
const char *path,
|
|
void *data);
|
|
typedef int each_loose_cruft_fn(const char *basename,
|
|
const char *path,
|
|
void *data);
|
|
typedef int each_loose_subdir_fn(unsigned int nr,
|
|
const char *path,
|
|
void *data);
|
|
int for_each_file_in_obj_subdir(unsigned int subdir_nr,
|
|
struct strbuf *path,
|
|
each_loose_object_fn obj_cb,
|
|
each_loose_cruft_fn cruft_cb,
|
|
each_loose_subdir_fn subdir_cb,
|
|
void *data);
|
|
int for_each_loose_file_in_objdir(const char *path,
|
|
each_loose_object_fn obj_cb,
|
|
each_loose_cruft_fn cruft_cb,
|
|
each_loose_subdir_fn subdir_cb,
|
|
void *data);
|
|
int for_each_loose_file_in_objdir_buf(struct strbuf *path,
|
|
each_loose_object_fn obj_cb,
|
|
each_loose_cruft_fn cruft_cb,
|
|
each_loose_subdir_fn subdir_cb,
|
|
void *data);
|
|
|
|
/*
|
|
* Iterate over loose and packed 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 */
|
|
enum object_type *typep;
|
|
unsigned long *sizep;
|
|
off_t *disk_sizep;
|
|
unsigned char *delta_base_sha1;
|
|
struct strbuf *typename;
|
|
void **contentp;
|
|
|
|
/* Response */
|
|
enum {
|
|
OI_CACHED,
|
|
OI_LOOSE,
|
|
OI_PACKED,
|
|
OI_DBCACHED
|
|
} whence;
|
|
union {
|
|
/*
|
|
* struct {
|
|
* ... Nothing to expose in this case
|
|
* } cached;
|
|
* struct {
|
|
* ... Nothing to expose in this case
|
|
* } loose;
|
|
*/
|
|
struct {
|
|
struct packed_git *pack;
|
|
off_t offset;
|
|
unsigned int is_delta;
|
|
} packed;
|
|
} u;
|
|
};
|
|
|
|
/*
|
|
* Initializer for a "struct object_info" that wants no items. You may
|
|
* also memset() the memory to all-zeroes.
|
|
*/
|
|
#define OBJECT_INFO_INIT {NULL}
|
|
|
|
/* Invoke lookup_replace_object() on the given hash */
|
|
#define OBJECT_INFO_LOOKUP_REPLACE 1
|
|
/* Allow reading from a loose object file of unknown/bogus type */
|
|
#define OBJECT_INFO_ALLOW_UNKNOWN_TYPE 2
|
|
/* Do not check cached storage */
|
|
#define OBJECT_INFO_SKIP_CACHED 4
|
|
/* 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);
|
|
|
|
extern const char *get_log_output_encoding(void);
|
|
extern const char *get_commit_output_encoding(void);
|
|
|
|
/*
|
|
* This is a hack for test programs like test-dump-untracked-cache to
|
|
* ensure that they do not modify the untracked cache when reading it.
|
|
* Do not use it otherwise!
|
|
*/
|
|
extern int ignore_untracked_cache_config;
|
|
|
|
extern int committer_ident_sufficiently_given(void);
|
|
extern int author_ident_sufficiently_given(void);
|
|
|
|
extern const char *git_commit_encoding;
|
|
extern const char *git_log_output_encoding;
|
|
extern const char *git_mailmap_file;
|
|
extern const char *git_mailmap_blob;
|
|
|
|
/* IO helper functions */
|
|
extern void maybe_flush_or_die(FILE *, const char *);
|
|
__attribute__((format (printf, 2, 3)))
|
|
extern 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);
|
|
|
|
extern void write_or_die(int fd, const void *buf, size_t count);
|
|
extern 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);
|
|
|
|
static inline ssize_t write_str_in_full(int fd, const char *str)
|
|
{
|
|
return write_in_full(fd, str, strlen(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);
|
|
|
|
/**
|
|
* Like write_file_buf(), but format the contents into a buffer first.
|
|
* Additionally, write_file() will append a newline if one is not already
|
|
* present, making it convenient to write text files:
|
|
*
|
|
* write_file(path, "counter: %d", ctr);
|
|
*/
|
|
__attribute__((format (printf, 2, 3)))
|
|
extern void write_file(const char *path, const char *fmt, ...);
|
|
|
|
/* pager.c */
|
|
extern void setup_pager(void);
|
|
extern 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);
|
|
|
|
extern const char *editor_program;
|
|
extern const char *askpass_program;
|
|
extern const char *excludes_file;
|
|
|
|
/* base85 */
|
|
int decode_85(char *dst, const char *line, int linelen);
|
|
void encode_85(char *buf, const unsigned char *data, int bytes);
|
|
|
|
/* alloc.c */
|
|
extern void *alloc_blob_node(void);
|
|
extern void *alloc_tree_node(void);
|
|
extern void *alloc_commit_node(void);
|
|
extern void *alloc_tag_node(void);
|
|
extern void *alloc_object_node(void);
|
|
extern void alloc_report(void);
|
|
extern unsigned int alloc_commit_index(void);
|
|
|
|
/* pkt-line.c */
|
|
void packet_trace_identity(const char *prog);
|
|
|
|
/* add */
|
|
/*
|
|
* return 0 if success, 1 - if addition of a file failed and
|
|
* ADD_FILES_IGNORE_ERRORS was specified in flags
|
|
*/
|
|
int add_files_to_cache(const char *prefix, const struct pathspec *pathspec, int flags);
|
|
|
|
/* diff.c */
|
|
extern int diff_auto_refresh_index;
|
|
|
|
/* match-trees.c */
|
|
void shift_tree(const struct object_id *, const struct object_id *, struct object_id *, int);
|
|
void shift_tree_by(const struct object_id *, const struct object_id *, struct object_id *, const char *);
|
|
|
|
/*
|
|
* whitespace rules.
|
|
* used by both diff and apply
|
|
* last two digits are tab width
|
|
*/
|
|
#define WS_BLANK_AT_EOL 0100
|
|
#define WS_SPACE_BEFORE_TAB 0200
|
|
#define WS_INDENT_WITH_NON_TAB 0400
|
|
#define WS_CR_AT_EOL 01000
|
|
#define WS_BLANK_AT_EOF 02000
|
|
#define WS_TAB_IN_INDENT 04000
|
|
#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
|
|
extern unsigned whitespace_rule_cfg;
|
|
extern unsigned whitespace_rule(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);
|
|
#define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK)
|
|
|
|
/* ls-files */
|
|
void overlay_tree_on_index(struct index_state *istate,
|
|
const char *tree_name, const char *prefix);
|
|
|
|
char *alias_lookup(const char *alias);
|
|
int split_cmdline(char *cmdline, const char ***argv);
|
|
/* Takes a negative value returned by split_cmdline */
|
|
const char *split_cmdline_strerror(int cmdline_errno);
|
|
|
|
/* setup.c */
|
|
struct startup_info {
|
|
int have_repository;
|
|
const char *prefix;
|
|
};
|
|
extern struct startup_info *startup_info;
|
|
|
|
/* merge.c */
|
|
struct commit_list;
|
|
int try_merge_command(const char *strategy, size_t xopts_nr,
|
|
const char **xopts, struct commit_list *common,
|
|
const char *head_arg, struct commit_list *remotes);
|
|
int checkout_fast_forward(const struct object_id *from,
|
|
const struct object_id *to,
|
|
int overwrite_ignore);
|
|
|
|
|
|
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);
|
|
|
|
int versioncmp(const char *s1, const char *s2);
|
|
void sleep_millisec(int millisec);
|
|
|
|
/*
|
|
* Create a directory and (if share is nonzero) adjust its permissions
|
|
* according to the shared_repository setting. Only use this for
|
|
* directories under $GIT_DIR. Don't use it for working tree
|
|
* directories.
|
|
*/
|
|
void safe_create_dir(const char *dir, int share);
|
|
|
|
#endif /* CACHE_H */
|