mirror of
https://github.com/git/git.git
synced 2024-11-24 18:33:43 +08:00
6e1a8952e9
Updates to refs traditionally weren't fsync'ed, but we can configure using core.fsync variable to do so. * ps/fsync-refs: core.fsync: new option to harden references
1930 lines
67 KiB
C
1930 lines
67 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 "list.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 "trace2.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 "oid-array.h"
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#include "repository.h"
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#include "mem-pool.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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#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 mem_pool_allocated;
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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_FSMONITOR_VALID (1 << 21)
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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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#define S_ISSPARSEDIR(m) ((m) == S_IFDIR)
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/* Forward structure decls */
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struct pathspec;
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struct child_process;
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struct tree;
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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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int mem_pool_allocated = dst->mem_pool_allocated;
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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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/* Restore the mem_pool_allocated flag */
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dst->mem_pool_allocated = mem_pool_allocated;
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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_ISSPARSEDIR(mode))
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return S_IFDIR;
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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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#define FSMONITOR_CHANGED (1 << 8)
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struct split_index;
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struct untracked_cache;
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struct progress;
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struct pattern_list;
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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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drop_cache_tree : 1,
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updated_workdir : 1,
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updated_skipworktree : 1,
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fsmonitor_has_run_once : 1,
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/*
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* sparse_index == 1 when sparse-directory
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* entries exist. Requires sparse-checkout
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* in cone mode.
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*/
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sparse_index : 1;
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struct hashmap name_hash;
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struct hashmap dir_hash;
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struct object_id oid;
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struct untracked_cache *untracked;
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char *fsmonitor_last_update;
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struct ewah_bitmap *fsmonitor_dirty;
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struct mem_pool *ce_mem_pool;
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struct progress *progress;
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struct repository *repo;
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struct pattern_list *sparse_checkout_patterns;
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};
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/* Name hashing */
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int test_lazy_init_name_hash(struct index_state *istate, int try_threaded);
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void add_name_hash(struct index_state *istate, struct cache_entry *ce);
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void remove_name_hash(struct index_state *istate, struct cache_entry *ce);
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void free_name_hash(struct index_state *istate);
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/* Cache entry creation and cleanup */
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/*
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* Create cache_entry intended for use in the specified index. Caller
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* is responsible for discarding the cache_entry with
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* `discard_cache_entry`.
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*/
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struct cache_entry *make_cache_entry(struct index_state *istate,
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unsigned int mode,
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const struct object_id *oid,
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const char *path,
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int stage,
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unsigned int refresh_options);
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struct cache_entry *make_empty_cache_entry(struct index_state *istate,
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size_t name_len);
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/*
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* Create a cache_entry that is not intended to be added to an index. If
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* `ce_mem_pool` is not NULL, the entry is allocated within the given memory
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* pool. Caller is responsible for discarding "loose" entries with
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* `discard_cache_entry()` and the memory pool with
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* `mem_pool_discard(ce_mem_pool, should_validate_cache_entries())`.
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*/
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struct cache_entry *make_transient_cache_entry(unsigned int mode,
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const struct object_id *oid,
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const char *path,
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int stage,
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struct mem_pool *ce_mem_pool);
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struct cache_entry *make_empty_transient_cache_entry(size_t len,
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struct mem_pool *ce_mem_pool);
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/*
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* Discard cache entry.
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*/
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void discard_cache_entry(struct cache_entry *ce);
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/*
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* Check configuration if we should perform extra validation on cache
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* entries.
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*/
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int should_validate_cache_entries(void);
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/*
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* Duplicate a cache_entry. Allocate memory for the new entry from a
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* memory_pool. Takes into account cache_entry fields that are meant
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* for managing the underlying memory allocation of the cache_entry.
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*/
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struct cache_entry *dup_cache_entry(const struct cache_entry *ce, struct index_state *istate);
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/*
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* Validate the cache entries in the index. This is an internal
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* consistency check that the cache_entry structs are allocated from
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* the expected memory pool.
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*/
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void validate_cache_entries(const struct index_state *istate);
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/*
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* Bulk prefetch all missing cache entries that are not GITLINKs and that match
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* the given predicate. This function should only be called if
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* has_promisor_remote() returns true.
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*/
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typedef int (*must_prefetch_predicate)(const struct cache_entry *);
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void prefetch_cache_entries(const struct index_state *istate,
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must_prefetch_predicate must_prefetch);
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#ifdef USE_THE_INDEX_COMPATIBILITY_MACROS
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extern struct index_state the_index;
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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() repo_read_index(the_repository)
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#define read_cache_from(path) read_index_from(&the_index, (path), (get_git_dir()))
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#define read_cache_preload(pathspec) repo_read_index_preload(the_repository, (pathspec), 0)
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#define is_cache_unborn() is_index_unborn(&the_index)
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#define read_cache_unmerged() repo_read_index_unmerged(the_repository)
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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 refresh_and_write_cache(refresh_flags, write_flags, gentle) repo_refresh_and_write_index(the_repository, (refresh_flags), (write_flags), (gentle), 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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#define hold_locked_index(lock_file, flags) repo_hold_locked_index(the_repository, (lock_file), (flags))
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#endif
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#define TYPE_BITS 3
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/*
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|
* Values in this enum (except those outside the 3 bit range) are part
|
|
* of pack file format. See Documentation/technical/pack-format.txt
|
|
* for more information.
|
|
*/
|
|
enum object_type {
|
|
OBJ_BAD = -1,
|
|
OBJ_NONE = 0,
|
|
OBJ_COMMIT = 1,
|
|
OBJ_TREE = 2,
|
|
OBJ_BLOB = 3,
|
|
OBJ_TAG = 4,
|
|
/* 5 for future expansion */
|
|
OBJ_OFS_DELTA = 6,
|
|
OBJ_REF_DELTA = 7,
|
|
OBJ_ANY,
|
|
OBJ_MAX
|
|
};
|
|
|
|
static inline enum object_type object_type(unsigned int mode)
|
|
{
|
|
return S_ISDIR(mode) ? OBJ_TREE :
|
|
S_ISGITLINK(mode) ? OBJ_COMMIT :
|
|
OBJ_BLOB;
|
|
}
|
|
|
|
/* Double-check local_repo_env below if you add to this list. */
|
|
#define GIT_DIR_ENVIRONMENT "GIT_DIR"
|
|
#define GIT_COMMON_DIR_ENVIRONMENT "GIT_COMMON_DIR"
|
|
#define GIT_NAMESPACE_ENVIRONMENT "GIT_NAMESPACE"
|
|
#define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
|
|
#define GIT_PREFIX_ENVIRONMENT "GIT_PREFIX"
|
|
#define GIT_SUPER_PREFIX_ENVIRONMENT "GIT_INTERNAL_SUPER_PREFIX"
|
|
#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
|
|
#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
|
|
#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
|
|
#define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
|
|
#define GIT_SHALLOW_FILE_ENVIRONMENT "GIT_SHALLOW_FILE"
|
|
#define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
|
|
#define CONFIG_ENVIRONMENT "GIT_CONFIG"
|
|
#define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS"
|
|
#define CONFIG_COUNT_ENVIRONMENT "GIT_CONFIG_COUNT"
|
|
#define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
|
|
#define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
|
|
#define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS"
|
|
#define GIT_REPLACE_REF_BASE_ENVIRONMENT "GIT_REPLACE_REF_BASE"
|
|
#define GITATTRIBUTES_FILE ".gitattributes"
|
|
#define INFOATTRIBUTES_FILE "info/attributes"
|
|
#define ATTRIBUTE_MACRO_PREFIX "[attr]"
|
|
#define GITMODULES_FILE ".gitmodules"
|
|
#define GITMODULES_INDEX ":.gitmodules"
|
|
#define GITMODULES_HEAD "HEAD:.gitmodules"
|
|
#define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF"
|
|
#define GIT_NOTES_DEFAULT_REF "refs/notes/commits"
|
|
#define GIT_NOTES_DISPLAY_REF_ENVIRONMENT "GIT_NOTES_DISPLAY_REF"
|
|
#define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF"
|
|
#define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE"
|
|
#define GIT_LITERAL_PATHSPECS_ENVIRONMENT "GIT_LITERAL_PATHSPECS"
|
|
#define GIT_GLOB_PATHSPECS_ENVIRONMENT "GIT_GLOB_PATHSPECS"
|
|
#define GIT_NOGLOB_PATHSPECS_ENVIRONMENT "GIT_NOGLOB_PATHSPECS"
|
|
#define GIT_ICASE_PATHSPECS_ENVIRONMENT "GIT_ICASE_PATHSPECS"
|
|
#define GIT_QUARANTINE_ENVIRONMENT "GIT_QUARANTINE_PATH"
|
|
#define GIT_OPTIONAL_LOCKS_ENVIRONMENT "GIT_OPTIONAL_LOCKS"
|
|
#define GIT_TEXT_DOMAIN_DIR_ENVIRONMENT "GIT_TEXTDOMAINDIR"
|
|
|
|
/*
|
|
* Environment variable used in handshaking the wire protocol.
|
|
* Contains a colon ':' separated list of keys with optional values
|
|
* 'key[=value]'. Presence of unknown keys and values must be
|
|
* ignored.
|
|
*/
|
|
#define GIT_PROTOCOL_ENVIRONMENT "GIT_PROTOCOL"
|
|
/* HTTP header used to handshake the wire protocol */
|
|
#define GIT_PROTOCOL_HEADER "Git-Protocol"
|
|
|
|
/*
|
|
* 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[];
|
|
|
|
void setup_git_env(const char *git_dir);
|
|
|
|
/*
|
|
* 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;
|
|
int is_bare_repository(void);
|
|
int is_inside_git_dir(void);
|
|
extern char *git_work_tree_cfg;
|
|
int is_inside_work_tree(void);
|
|
const char *get_git_dir(void);
|
|
const char *get_git_common_dir(void);
|
|
char *get_object_directory(void);
|
|
char *get_index_file(void);
|
|
char *get_graft_file(struct repository *r);
|
|
void set_git_dir(const char *path, int make_realpath);
|
|
int get_common_dir_noenv(struct strbuf *sb, const char *gitdir);
|
|
int get_common_dir(struct strbuf *sb, const char *gitdir);
|
|
const char *get_git_namespace(void);
|
|
const char *strip_namespace(const char *namespaced_ref);
|
|
const char *get_super_prefix(void);
|
|
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".
|
|
*/
|
|
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.
|
|
*/
|
|
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
|
|
void read_gitfile_error_die(int error_code, const char *path, const char *dir);
|
|
const char *read_gitfile_gently(const char *path, int *return_error_code);
|
|
#define read_gitfile(path) read_gitfile_gently((path), NULL)
|
|
const char *resolve_gitdir_gently(const char *suspect, int *return_error_code);
|
|
#define resolve_gitdir(path) resolve_gitdir_gently((path), NULL)
|
|
|
|
void set_git_work_tree(const char *tree);
|
|
|
|
#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
|
|
|
|
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.
|
|
*/
|
|
int discover_git_directory(struct strbuf *commondir,
|
|
struct strbuf *gitdir);
|
|
const char *setup_git_directory_gently(int *);
|
|
const char *setup_git_directory(void);
|
|
char *prefix_path(const char *prefix, int len, const char *path);
|
|
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).
|
|
*/
|
|
char *prefix_filename(const char *prefix, const char *path);
|
|
|
|
int check_filename(const char *prefix, const char *name);
|
|
void verify_filename(const char *prefix,
|
|
const char *name,
|
|
int diagnose_misspelt_rev);
|
|
void verify_non_filename(const char *prefix, const char *name);
|
|
int path_inside_repo(const char *prefix, const char *path);
|
|
|
|
#define INIT_DB_QUIET 0x0001
|
|
#define INIT_DB_EXIST_OK 0x0002
|
|
|
|
int init_db(const char *git_dir, const char *real_git_dir,
|
|
const char *template_dir, int hash_algo,
|
|
const char *initial_branch, unsigned int flags);
|
|
void initialize_repository_version(int hash_algo, int reinit);
|
|
|
|
void sanitize_stdfds(void);
|
|
int daemonize(void);
|
|
|
|
#define alloc_nr(x) (((x)+16)*3/2)
|
|
|
|
/**
|
|
* Dynamically growing an array using realloc() is error prone and boring.
|
|
*
|
|
* Define your array with:
|
|
*
|
|
* - a pointer (`item`) that points at the array, initialized to `NULL`
|
|
* (although please name the variable based on its contents, not on its
|
|
* type);
|
|
*
|
|
* - an integer variable (`alloc`) that keeps track of how big the current
|
|
* allocation is, initialized to `0`;
|
|
*
|
|
* - another integer variable (`nr`) to keep track of how many elements the
|
|
* array currently has, initialized to `0`.
|
|
*
|
|
* Then before adding `n`th element to the item, call `ALLOC_GROW(item, n,
|
|
* alloc)`. This ensures that the array can hold at least `n` elements by
|
|
* calling `realloc(3)` and adjusting `alloc` variable.
|
|
*
|
|
* ------------
|
|
* sometype *item;
|
|
* size_t nr;
|
|
* size_t alloc
|
|
*
|
|
* for (i = 0; i < nr; i++)
|
|
* if (we like item[i] already)
|
|
* return;
|
|
*
|
|
* // we did not like any existing one, so add one
|
|
* ALLOC_GROW(item, nr + 1, alloc);
|
|
* item[nr++] = value you like;
|
|
* ------------
|
|
*
|
|
* You are responsible for updating the `nr` variable.
|
|
*
|
|
* If you need to specify the number of elements to allocate explicitly
|
|
* then use the macro `REALLOC_ARRAY(item, alloc)` instead of `ALLOC_GROW`.
|
|
*
|
|
* Consider using ALLOC_GROW_BY instead of ALLOC_GROW as it has some
|
|
* added niceties.
|
|
*
|
|
* 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)
|
|
|
|
/*
|
|
* Similar to ALLOC_GROW but handles updating of the nr value and
|
|
* zeroing the bytes of the newly-grown array elements.
|
|
*
|
|
* DO NOT USE any expression with side-effect for any of the
|
|
* arguments.
|
|
*/
|
|
#define ALLOC_GROW_BY(x, nr, increase, alloc) \
|
|
do { \
|
|
if (increase) { \
|
|
size_t new_nr = nr + (increase); \
|
|
if (new_nr < nr) \
|
|
BUG("negative growth in ALLOC_GROW_BY"); \
|
|
ALLOC_GROW(x, new_nr, alloc); \
|
|
memset((x) + nr, 0, sizeof(*(x)) * (increase)); \
|
|
nr = new_nr; \
|
|
} \
|
|
} while (0)
|
|
|
|
/* Initialize and use the cache information */
|
|
struct lock_file;
|
|
void preload_index(struct index_state *index,
|
|
const struct pathspec *pathspec,
|
|
unsigned int refresh_flags);
|
|
int do_read_index(struct index_state *istate, const char *path,
|
|
int must_exist); /* for testting only! */
|
|
int read_index_from(struct index_state *, const char *path,
|
|
const char *gitdir);
|
|
int is_index_unborn(struct index_state *);
|
|
|
|
void ensure_full_index(struct index_state *istate);
|
|
|
|
/* For use with `write_locked_index()`. */
|
|
#define COMMIT_LOCK (1 << 0)
|
|
#define SKIP_IF_UNCHANGED (1 << 1)
|
|
|
|
/*
|
|
* Write the index while holding an already-taken lock. Close the lock,
|
|
* and if `COMMIT_LOCK` is given, commit it.
|
|
*
|
|
* Unless a split index is in use, write the index into the lockfile.
|
|
*
|
|
* With a split index, write the shared index to a temporary file,
|
|
* adjust its permissions and rename it into place, then write the
|
|
* split index to the lockfile. If the temporary file for the shared
|
|
* index cannot be created, fall back to the behavior described in
|
|
* the previous paragraph.
|
|
*
|
|
* With `COMMIT_LOCK`, the lock is always committed or rolled back.
|
|
* Without it, the lock is closed, but neither committed nor rolled
|
|
* back.
|
|
*
|
|
* If `SKIP_IF_UNCHANGED` is given and the index is unchanged, nothing
|
|
* is written (and the lock is rolled back if `COMMIT_LOCK` is given).
|
|
*/
|
|
int write_locked_index(struct index_state *, struct lock_file *lock, unsigned flags);
|
|
|
|
int discard_index(struct index_state *);
|
|
void move_index_extensions(struct index_state *dst, struct index_state *src);
|
|
int unmerged_index(const struct index_state *);
|
|
|
|
/**
|
|
* Returns 1 if istate differs from tree, 0 otherwise. If tree is NULL,
|
|
* compares istate to HEAD. If tree is NULL and on an unborn branch,
|
|
* returns 1 if there are entries in istate, 0 otherwise. If an strbuf is
|
|
* provided, the space-separated list of files that differ will be appended
|
|
* to it.
|
|
*/
|
|
int repo_index_has_changes(struct repository *repo,
|
|
struct tree *tree,
|
|
struct strbuf *sb);
|
|
|
|
int verify_path(const char *path, unsigned mode);
|
|
int strcmp_offset(const char *s1, const char *s2, size_t *first_change);
|
|
int index_dir_exists(struct index_state *istate, const char *name, int namelen);
|
|
void adjust_dirname_case(struct index_state *istate, char *name);
|
|
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
|
|
*/
|
|
int index_name_pos(struct index_state *, const char *name, int namelen);
|
|
|
|
/*
|
|
* Determines whether an entry with the given name exists within the
|
|
* given index. The return value is 1 if an exact match is found, otherwise
|
|
* it is 0. Note that, unlike index_name_pos, this function does not expand
|
|
* the index if it is sparse. If an item exists within the full index but it
|
|
* is contained within a sparse directory (and not in the sparse index), 0 is
|
|
* returned.
|
|
*/
|
|
int index_entry_exists(struct index_state *, const char *name, int namelen);
|
|
|
|
/*
|
|
* Some functions return the negative complement of an insert position when a
|
|
* precise match was not found but a position was found where the entry would
|
|
* need to be inserted. This helper protects that logic from any integer
|
|
* underflow.
|
|
*/
|
|
static inline int index_pos_to_insert_pos(uintmax_t pos)
|
|
{
|
|
if (pos > INT_MAX)
|
|
die("overflow: -1 - %"PRIuMAX, pos);
|
|
return -1 - (int)pos;
|
|
}
|
|
|
|
#define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
|
|
#define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
|
|
#define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
|
|
#define ADD_CACHE_JUST_APPEND 8 /* Append only */
|
|
#define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */
|
|
#define ADD_CACHE_KEEP_CACHE_TREE 32 /* Do not invalidate cache-tree */
|
|
#define ADD_CACHE_RENORMALIZE 64 /* Pass along HASH_RENORMALIZE */
|
|
int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
|
|
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. */
|
|
int remove_index_entry_at(struct index_state *, int pos);
|
|
|
|
void remove_marked_cache_entries(struct index_state *istate, int invalidate);
|
|
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.
|
|
*/
|
|
int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
|
|
int add_file_to_index(struct index_state *, const char *path, int flags);
|
|
|
|
int chmod_index_entry(struct index_state *, struct cache_entry *ce, char flip);
|
|
int ce_same_name(const struct cache_entry *a, const struct cache_entry *b);
|
|
void set_object_name_for_intent_to_add_entry(struct cache_entry *ce);
|
|
int index_name_is_other(struct index_state *, const char *, int);
|
|
void *read_blob_data_from_index(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
|
|
/* don't refresh_fsmonitor state or do stat comparison even if CE_FSMONITOR_VALID is true */
|
|
#define CE_MATCH_IGNORE_FSMONITOR 0X20
|
|
int is_racy_timestamp(const struct index_state *istate,
|
|
const struct cache_entry *ce);
|
|
int has_racy_timestamp(struct index_state *istate);
|
|
int ie_match_stat(struct index_state *, const struct cache_entry *, struct stat *, unsigned int);
|
|
int ie_modified(struct index_state *, const struct cache_entry *, struct stat *, unsigned int);
|
|
|
|
#define HASH_WRITE_OBJECT 1
|
|
#define HASH_FORMAT_CHECK 2
|
|
#define HASH_RENORMALIZE 4
|
|
#define HASH_SILENT 8
|
|
int index_fd(struct index_state *istate, struct object_id *oid, int fd, struct stat *st, enum object_type type, const char *path, unsigned flags);
|
|
int index_path(struct index_state *istate, struct object_id *oid, const char *path, struct stat *st, unsigned flags);
|
|
|
|
/*
|
|
* Record to sd the data from st that we use to check whether a file
|
|
* might have changed.
|
|
*/
|
|
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.
|
|
*/
|
|
int match_stat_data(const struct stat_data *sd, struct stat *st);
|
|
int match_stat_data_racy(const struct index_state *istate,
|
|
const struct stat_data *sd, struct stat *st);
|
|
|
|
void fill_stat_cache_info(struct index_state *istate, struct cache_entry *ce, struct stat *st);
|
|
|
|
#define REFRESH_REALLY (1 << 0) /* ignore_valid */
|
|
#define REFRESH_UNMERGED (1 << 1) /* allow unmerged */
|
|
#define REFRESH_QUIET (1 << 2) /* be quiet about it */
|
|
#define REFRESH_IGNORE_MISSING (1 << 3) /* ignore non-existent */
|
|
#define REFRESH_IGNORE_SUBMODULES (1 << 4) /* ignore submodules */
|
|
#define REFRESH_IN_PORCELAIN (1 << 5) /* user friendly output, not "needs update" */
|
|
#define REFRESH_PROGRESS (1 << 6) /* show progress bar if stderr is tty */
|
|
#define REFRESH_IGNORE_SKIP_WORKTREE (1 << 7) /* ignore skip_worktree entries */
|
|
int refresh_index(struct index_state *, unsigned int flags, const struct pathspec *pathspec, char *seen, const char *header_msg);
|
|
/*
|
|
* Refresh the index and write it to disk.
|
|
*
|
|
* 'refresh_flags' is passed directly to 'refresh_index()', while
|
|
* 'COMMIT_LOCK | write_flags' is passed to 'write_locked_index()', so
|
|
* the lockfile is always either committed or rolled back.
|
|
*
|
|
* If 'gentle' is passed, errors locking the index are ignored.
|
|
*
|
|
* Return 1 if refreshing the index returns an error, -1 if writing
|
|
* the index to disk fails, 0 on success.
|
|
*
|
|
* Note that if refreshing the index returns an error, we still write
|
|
* out the index (unless locking fails).
|
|
*/
|
|
int repo_refresh_and_write_index(struct repository*, unsigned int refresh_flags, unsigned int write_flags, int gentle, const struct pathspec *, char *seen, const char *header_msg);
|
|
|
|
struct cache_entry *refresh_cache_entry(struct index_state *, struct cache_entry *, unsigned int);
|
|
|
|
void set_alternate_index_output(const char *);
|
|
|
|
extern int verify_index_checksum;
|
|
extern int verify_ce_order;
|
|
|
|
/* 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 char *apply_default_whitespace;
|
|
extern char *apply_default_ignorewhitespace;
|
|
extern const char *git_attributes_file;
|
|
extern const char *git_hooks_path;
|
|
extern int zlib_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.
|
|
*/
|
|
extern int read_replace_refs;
|
|
extern char *git_replace_ref_base;
|
|
|
|
/*
|
|
* These values are used to help identify parts of a repository to fsync.
|
|
* FSYNC_COMPONENT_NONE identifies data that will not be a persistent part of the
|
|
* repository and so shouldn't be fsynced.
|
|
*/
|
|
enum fsync_component {
|
|
FSYNC_COMPONENT_NONE,
|
|
FSYNC_COMPONENT_LOOSE_OBJECT = 1 << 0,
|
|
FSYNC_COMPONENT_PACK = 1 << 1,
|
|
FSYNC_COMPONENT_PACK_METADATA = 1 << 2,
|
|
FSYNC_COMPONENT_COMMIT_GRAPH = 1 << 3,
|
|
FSYNC_COMPONENT_INDEX = 1 << 4,
|
|
FSYNC_COMPONENT_REFERENCE = 1 << 5,
|
|
};
|
|
|
|
#define FSYNC_COMPONENTS_OBJECTS (FSYNC_COMPONENT_LOOSE_OBJECT | \
|
|
FSYNC_COMPONENT_PACK)
|
|
|
|
#define FSYNC_COMPONENTS_DERIVED_METADATA (FSYNC_COMPONENT_PACK_METADATA | \
|
|
FSYNC_COMPONENT_COMMIT_GRAPH)
|
|
|
|
#define FSYNC_COMPONENTS_DEFAULT (FSYNC_COMPONENTS_OBJECTS | \
|
|
FSYNC_COMPONENTS_DERIVED_METADATA | \
|
|
~FSYNC_COMPONENT_LOOSE_OBJECT)
|
|
|
|
#define FSYNC_COMPONENTS_COMMITTED (FSYNC_COMPONENTS_OBJECTS | \
|
|
FSYNC_COMPONENT_REFERENCE)
|
|
|
|
#define FSYNC_COMPONENTS_ADDED (FSYNC_COMPONENTS_COMMITTED | \
|
|
FSYNC_COMPONENT_INDEX)
|
|
|
|
#define FSYNC_COMPONENTS_ALL (FSYNC_COMPONENT_LOOSE_OBJECT | \
|
|
FSYNC_COMPONENT_PACK | \
|
|
FSYNC_COMPONENT_PACK_METADATA | \
|
|
FSYNC_COMPONENT_COMMIT_GRAPH | \
|
|
FSYNC_COMPONENT_INDEX | \
|
|
FSYNC_COMPONENT_REFERENCE)
|
|
|
|
/*
|
|
* A bitmask indicating which components of the repo should be fsynced.
|
|
*/
|
|
extern enum fsync_component fsync_components;
|
|
extern int fsync_object_files;
|
|
extern int use_fsync;
|
|
|
|
enum fsync_method {
|
|
FSYNC_METHOD_FSYNC,
|
|
FSYNC_METHOD_WRITEOUT_ONLY
|
|
};
|
|
|
|
extern enum fsync_method fsync_method;
|
|
extern int core_preload_index;
|
|
extern int precomposed_unicode;
|
|
extern int protect_hfs;
|
|
extern int protect_ntfs;
|
|
extern const char *core_fsmonitor;
|
|
|
|
extern int core_apply_sparse_checkout;
|
|
extern int core_sparse_checkout_cone;
|
|
extern int sparse_expect_files_outside_of_patterns;
|
|
|
|
/*
|
|
* Returns the boolean value of $GIT_OPTIONAL_LOCKS (or the default value).
|
|
*/
|
|
int use_optional_locks(void);
|
|
|
|
/*
|
|
* The character that begins a commented line in user-editable file
|
|
* that is subject to stripspace.
|
|
*/
|
|
extern char comment_line_char;
|
|
extern int auto_comment_line_char;
|
|
|
|
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 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 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;
|
|
extern int repository_format_worktree_config;
|
|
|
|
/*
|
|
* You _have_ to initialize a `struct repository_format` using
|
|
* `= REPOSITORY_FORMAT_INIT` before calling `read_repository_format()`.
|
|
*/
|
|
struct repository_format {
|
|
int version;
|
|
int precious_objects;
|
|
char *partial_clone; /* value of extensions.partialclone */
|
|
int worktree_config;
|
|
int is_bare;
|
|
int hash_algo;
|
|
int sparse_index;
|
|
char *work_tree;
|
|
struct string_list unknown_extensions;
|
|
struct string_list v1_only_extensions;
|
|
};
|
|
|
|
/*
|
|
* Always use this to initialize a `struct repository_format`
|
|
* to a well-defined, default state before calling
|
|
* `read_repository()`.
|
|
*/
|
|
#define REPOSITORY_FORMAT_INIT \
|
|
{ \
|
|
.version = -1, \
|
|
.is_bare = -1, \
|
|
.hash_algo = GIT_HASH_SHA1, \
|
|
.unknown_extensions = STRING_LIST_INIT_DUP, \
|
|
.v1_only_extensions = STRING_LIST_INIT_DUP, \
|
|
}
|
|
|
|
/*
|
|
* Read the repository format characteristics from the config file "path" into
|
|
* "format" struct. Returns the numeric version. On error, or if no version is
|
|
* found in the configuration, -1 is returned, format->version is set to -1,
|
|
* and all other fields in the struct are set to the default configuration
|
|
* (REPOSITORY_FORMAT_INIT). Always initialize the struct using
|
|
* REPOSITORY_FORMAT_INIT before calling this function.
|
|
*/
|
|
int read_repository_format(struct repository_format *format, const char *path);
|
|
|
|
/*
|
|
* Free the memory held onto by `format`, but not the struct itself.
|
|
* (No need to use this after `read_repository_format()` fails.)
|
|
*/
|
|
void clear_repository_format(struct repository_format *format);
|
|
|
|
/*
|
|
* 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?".
|
|
*
|
|
* If successful and fmt is not NULL, fill fmt with data.
|
|
*/
|
|
void check_repository_format(struct repository_format *fmt);
|
|
|
|
#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 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_MAX_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.
|
|
*/
|
|
const char *repo_find_unique_abbrev(struct repository *r, const struct object_id *oid, int len);
|
|
#define find_unique_abbrev(oid, len) repo_find_unique_abbrev(the_repository, oid, len)
|
|
int repo_find_unique_abbrev_r(struct repository *r, char *hex, const struct object_id *oid, int len);
|
|
#define find_unique_abbrev_r(hex, oid, len) repo_find_unique_abbrev_r(the_repository, hex, oid, len)
|
|
|
|
/* 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. Both these variants adjust the permissions of the
|
|
* created directories to honor core.sharedRepository, so they are best
|
|
* suited for files inside the git dir. For working tree files, use
|
|
* safe_create_leading_directories_no_share() instead, as it ignores
|
|
* the core.sharedRepository setting.
|
|
*/
|
|
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);
|
|
enum scld_error safe_create_leading_directories_no_share(char *path);
|
|
|
|
int mkdir_in_gitdir(const char *path);
|
|
char *interpolate_path(const char *path, int real_home);
|
|
/* NEEDSWORK: remove this synonym once in-flight topics have migrated */
|
|
#define expand_user_path interpolate_path
|
|
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);
|
|
char *strbuf_realpath_forgiving(struct strbuf *resolved, const char *path,
|
|
int die_on_error);
|
|
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);
|
|
|
|
/*
|
|
* These functions match their is_hfs_dotgit() counterparts; see utf8.h for
|
|
* details.
|
|
*/
|
|
int is_ntfs_dotgit(const char *name);
|
|
int is_ntfs_dotgitmodules(const char *name);
|
|
int is_ntfs_dotgitignore(const char *name);
|
|
int is_ntfs_dotgitattributes(const char *name);
|
|
int is_ntfs_dotmailmap(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/$subdir/$filename" if $XDG_CONFIG_HOME is non-empty, otherwise
|
|
* "$HOME/.config/$subdir/$filename". Return NULL upon error.
|
|
*/
|
|
char *xdg_config_home_for(const char *subdir, const char *filename);
|
|
|
|
/**
|
|
* 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/$filename". Return NULL upon error.
|
|
*/
|
|
char *xdg_config_home(const char *filename);
|
|
|
|
/**
|
|
* Return a newly allocated string with the evaluation of
|
|
* "$XDG_CACHE_HOME/git/$filename" if $XDG_CACHE_HOME is non-empty, otherwise
|
|
* "$HOME/.cache/git/$filename". Return NULL upon error.
|
|
*/
|
|
char *xdg_cache_home(const char *filename);
|
|
|
|
int git_open_cloexec(const char *name, int flags);
|
|
#define git_open(name) git_open_cloexec(name, O_RDONLY)
|
|
|
|
/**
|
|
* unpack_loose_header() initializes the data stream needed to unpack
|
|
* a loose object header.
|
|
*
|
|
* Returns:
|
|
*
|
|
* - ULHR_OK on success
|
|
* - ULHR_BAD on error
|
|
* - ULHR_TOO_LONG if the header was too long
|
|
*
|
|
* It will only parse up to MAX_HEADER_LEN bytes unless an optional
|
|
* "hdrbuf" argument is non-NULL. This is intended for use with
|
|
* OBJECT_INFO_ALLOW_UNKNOWN_TYPE to extract the bad type for (error)
|
|
* reporting. The full header will be extracted to "hdrbuf" for use
|
|
* with parse_loose_header(), ULHR_TOO_LONG will still be returned
|
|
* from this function to indicate that the header was too long.
|
|
*/
|
|
enum unpack_loose_header_result {
|
|
ULHR_OK,
|
|
ULHR_BAD,
|
|
ULHR_TOO_LONG,
|
|
};
|
|
enum unpack_loose_header_result unpack_loose_header(git_zstream *stream,
|
|
unsigned char *map,
|
|
unsigned long mapsize,
|
|
void *buffer,
|
|
unsigned long bufsiz,
|
|
struct strbuf *hdrbuf);
|
|
|
|
/**
|
|
* parse_loose_header() parses the starting "<type> <len>\0" of an
|
|
* object. If it doesn't follow that format -1 is returned. To check
|
|
* the validity of the <type> populate the "typep" in the "struct
|
|
* object_info". It will be OBJ_BAD if the object type is unknown. The
|
|
* parsed <len> can be retrieved via "oi->sizep", and from there
|
|
* passed to unpack_loose_rest().
|
|
*/
|
|
struct object_info;
|
|
int parse_loose_header(const char *hdr, struct object_info *oi);
|
|
|
|
/**
|
|
* With in-core object data in "buf", rehash it to make sure the
|
|
* object name actually matches "oid" to detect object corruption.
|
|
*
|
|
* A negative value indicates an error, usually that the OID is not
|
|
* what we expected, but it might also indicate another error.
|
|
*/
|
|
int check_object_signature(struct repository *r, const struct object_id *oid,
|
|
void *map, unsigned long size,
|
|
enum object_type type);
|
|
|
|
/**
|
|
* A streaming version of check_object_signature().
|
|
* Try reading the object named with "oid" using
|
|
* the streaming interface and rehash it to do the same.
|
|
*/
|
|
int stream_object_signature(struct repository *r, const struct object_id *oid);
|
|
|
|
int finalize_object_file(const char *tmpfile, const char *filename);
|
|
|
|
/* Helper to check and "touch" a file */
|
|
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)
|
|
{
|
|
unsigned int val = hexval(s[0]);
|
|
return (val & ~0xf) ? 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 short 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_OID_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_OID_QUIETLY 01
|
|
#define GET_OID_COMMIT 02
|
|
#define GET_OID_COMMITTISH 04
|
|
#define GET_OID_TREE 010
|
|
#define GET_OID_TREEISH 020
|
|
#define GET_OID_BLOB 040
|
|
#define GET_OID_FOLLOW_SYMLINKS 0100
|
|
#define GET_OID_RECORD_PATH 0200
|
|
#define GET_OID_ONLY_TO_DIE 04000
|
|
#define GET_OID_REQUIRE_PATH 010000
|
|
|
|
#define GET_OID_DISAMBIGUATORS \
|
|
(GET_OID_COMMIT | GET_OID_COMMITTISH | \
|
|
GET_OID_TREE | GET_OID_TREEISH | \
|
|
GET_OID_BLOB)
|
|
|
|
enum get_oid_result {
|
|
FOUND = 0,
|
|
MISSING_OBJECT = -1, /* The requested object is missing */
|
|
SHORT_NAME_AMBIGUOUS = -2,
|
|
/* The following only apply when symlinks are followed */
|
|
DANGLING_SYMLINK = -4, /*
|
|
* The initial symlink is there, but
|
|
* (transitively) points to a missing
|
|
* in-tree file
|
|
*/
|
|
SYMLINK_LOOP = -5,
|
|
NOT_DIR = -6, /*
|
|
* Somewhere along the symlink chain, a path is
|
|
* requested which contains a file as a
|
|
* non-final element.
|
|
*/
|
|
};
|
|
|
|
int repo_get_oid(struct repository *r, const char *str, struct object_id *oid);
|
|
__attribute__((format (printf, 2, 3)))
|
|
int get_oidf(struct object_id *oid, const char *fmt, ...);
|
|
int repo_get_oid_commit(struct repository *r, const char *str, struct object_id *oid);
|
|
int repo_get_oid_committish(struct repository *r, const char *str, struct object_id *oid);
|
|
int repo_get_oid_tree(struct repository *r, const char *str, struct object_id *oid);
|
|
int repo_get_oid_treeish(struct repository *r, const char *str, struct object_id *oid);
|
|
int repo_get_oid_blob(struct repository *r, const char *str, struct object_id *oid);
|
|
int repo_get_oid_mb(struct repository *r, const char *str, struct object_id *oid);
|
|
void maybe_die_on_misspelt_object_name(struct repository *repo,
|
|
const char *name,
|
|
const char *prefix);
|
|
enum get_oid_result get_oid_with_context(struct repository *repo, const char *str,
|
|
unsigned flags, struct object_id *oid,
|
|
struct object_context *oc);
|
|
|
|
#define get_oid(str, oid) repo_get_oid(the_repository, str, oid)
|
|
#define get_oid_commit(str, oid) repo_get_oid_commit(the_repository, str, oid)
|
|
#define get_oid_committish(str, oid) repo_get_oid_committish(the_repository, str, oid)
|
|
#define get_oid_tree(str, oid) repo_get_oid_tree(the_repository, str, oid)
|
|
#define get_oid_treeish(str, oid) repo_get_oid_treeish(the_repository, str, oid)
|
|
#define get_oid_blob(str, oid) repo_get_oid_blob(the_repository, str, oid)
|
|
#define get_oid_mb(str, oid) repo_get_oid_mb(the_repository, str, oid)
|
|
|
|
typedef int each_abbrev_fn(const struct object_id *oid, void *);
|
|
int repo_for_each_abbrev(struct repository *r, const char *prefix, each_abbrev_fn, void *);
|
|
#define for_each_abbrev(prefix, fn, data) repo_for_each_abbrev(the_repository, prefix, fn, data)
|
|
|
|
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.
|
|
*/
|
|
int get_sha1_hex(const char *hex, unsigned char *sha1);
|
|
int get_oid_hex(const char *hex, struct object_id *sha1);
|
|
|
|
/* Like get_oid_hex, but for an arbitrary hash algorithm. */
|
|
int get_oid_hex_algop(const char *hex, struct object_id *oid, const struct git_hash_algo *algop);
|
|
|
|
/*
|
|
* Read `len` pairs of hexadecimal digits from `hex` and write the
|
|
* values to `binary` as `len` bytes. Return 0 on success, or -1 if
|
|
* the input does not consist of hex digits).
|
|
*/
|
|
int hex_to_bytes(unsigned char *binary, const char *hex, size_t len);
|
|
|
|
/*
|
|
* Convert a binary hash in "unsigned char []" or an object name in
|
|
* "struct object_id *" 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_MAX_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", hash_to_hex(one), hash_to_hex(two));
|
|
* printf("%s -> %s", oid_to_hex(one), oid_to_hex(two));
|
|
*/
|
|
char *hash_to_hex_algop_r(char *buffer, const unsigned char *hash, const struct git_hash_algo *);
|
|
char *oid_to_hex_r(char *out, const struct object_id *oid);
|
|
char *hash_to_hex_algop(const unsigned char *hash, const struct git_hash_algo *); /* static buffer result! */
|
|
char *hash_to_hex(const unsigned char *hash); /* same static buffer */
|
|
char *oid_to_hex(const struct object_id *oid); /* same static buffer */
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
int parse_oid_hex(const char *hex, struct object_id *oid, const char **end);
|
|
|
|
/* Like parse_oid_hex, but for an arbitrary hash algorithm. */
|
|
int parse_oid_hex_algop(const char *hex, struct object_id *oid, const char **end,
|
|
const struct git_hash_algo *algo);
|
|
|
|
|
|
/*
|
|
* These functions work like get_oid_hex and parse_oid_hex, but they will parse
|
|
* a hex value for any algorithm. The algorithm is detected based on the length
|
|
* and the algorithm in use is returned. If this is not a hex object ID in any
|
|
* algorithm, returns GIT_HASH_UNKNOWN.
|
|
*/
|
|
int get_oid_hex_any(const char *hex, struct object_id *oid);
|
|
int parse_oid_hex_any(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.
|
|
*/
|
|
#define INTERPRET_BRANCH_LOCAL (1<<0)
|
|
#define INTERPRET_BRANCH_REMOTE (1<<1)
|
|
#define INTERPRET_BRANCH_HEAD (1<<2)
|
|
struct interpret_branch_name_options {
|
|
/*
|
|
* 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.
|
|
*/
|
|
unsigned allowed;
|
|
|
|
/*
|
|
* If ^{upstream} or ^{push} (or equivalent) is requested, and the
|
|
* branch in question does not have such a reference, return -1 instead
|
|
* of die()-ing.
|
|
*/
|
|
unsigned nonfatal_dangling_mark : 1;
|
|
};
|
|
int repo_interpret_branch_name(struct repository *r,
|
|
const char *str, int len,
|
|
struct strbuf *buf,
|
|
const struct interpret_branch_name_options *options);
|
|
#define interpret_branch_name(str, len, buf, options) \
|
|
repo_interpret_branch_name(the_repository, str, len, buf, options)
|
|
|
|
int validate_headref(const char *ref);
|
|
|
|
int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
|
|
int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
|
|
int name_compare(const char *name1, size_t len1, const char *name2, size_t len2);
|
|
int cache_name_stage_compare(const char *name1, int len1, int stage1, const char *name2, int len2, int stage2);
|
|
|
|
void *read_object_with_reference(struct repository *r,
|
|
const struct object_id *oid,
|
|
enum object_type required_type,
|
|
unsigned long *size,
|
|
struct object_id *oid_ret);
|
|
|
|
struct object *repo_peel_to_type(struct repository *r,
|
|
const char *name, int namelen,
|
|
struct object *o, enum object_type);
|
|
#define peel_to_type(name, namelen, obj, type) \
|
|
repo_peel_to_type(the_repository, name, namelen, obj, type)
|
|
|
|
#define IDENT_STRICT 1
|
|
#define IDENT_NO_DATE 2
|
|
#define IDENT_NO_NAME 4
|
|
|
|
enum want_ident {
|
|
WANT_BLANK_IDENT,
|
|
WANT_AUTHOR_IDENT,
|
|
WANT_COMMITTER_IDENT
|
|
};
|
|
|
|
const char *git_author_info(int);
|
|
const char *git_committer_info(int);
|
|
const char *fmt_ident(const char *name, const char *email,
|
|
enum want_ident whose_ident,
|
|
const char *date_str, int);
|
|
const char *fmt_name(enum want_ident);
|
|
const char *ident_default_name(void);
|
|
const char *ident_default_email(void);
|
|
const char *git_editor(void);
|
|
const char *git_sequence_editor(void);
|
|
const char *git_pager(int stdout_is_tty);
|
|
int is_terminal_dumb(void);
|
|
int git_ident_config(const char *, const char *, void *);
|
|
/*
|
|
* Prepare an ident to fall back on if the user didn't configure it.
|
|
*/
|
|
void prepare_fallback_ident(const char *name, const char *email);
|
|
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
|
|
*/
|
|
int split_ident_line(struct ident_split *, const char *, int);
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
int ident_cmp(const struct ident_split *, const struct ident_split *);
|
|
|
|
struct cache_def {
|
|
struct strbuf path;
|
|
int flags;
|
|
int track_flags;
|
|
int prefix_len_stat_func;
|
|
};
|
|
#define CACHE_DEF_INIT { \
|
|
.path = STRBUF_INIT, \
|
|
}
|
|
static inline void cache_def_clear(struct cache_def *cache)
|
|
{
|
|
strbuf_release(&cache->path);
|
|
}
|
|
|
|
int has_symlink_leading_path(const char *name, int len);
|
|
int threaded_has_symlink_leading_path(struct cache_def *, const char *, int);
|
|
int check_leading_path(const char *name, int len, int warn_on_lstat_err);
|
|
int has_dirs_only_path(const char *name, int len, int prefix_len);
|
|
void invalidate_lstat_cache(void);
|
|
void schedule_dir_for_removal(const char *name, int len);
|
|
void remove_scheduled_dirs(void);
|
|
|
|
struct pack_window {
|
|
struct pack_window *next;
|
|
unsigned char *base;
|
|
off_t offset;
|
|
size_t len;
|
|
unsigned int last_used;
|
|
unsigned int inuse_cnt;
|
|
};
|
|
|
|
struct pack_entry {
|
|
off_t offset;
|
|
struct packed_git *p;
|
|
};
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
int odb_mkstemp(struct strbuf *temp_filename, const char *pattern);
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
int odb_pack_keep(const char *name);
|
|
|
|
/*
|
|
* Set this to 0 to prevent oid_object_info_extended() from fetching missing
|
|
* blobs. This has a difference only if extensions.partialClone is set.
|
|
*
|
|
* Its default value is 1.
|
|
*/
|
|
extern int fetch_if_missing;
|
|
|
|
/* Dumb servers support */
|
|
int update_server_info(int);
|
|
|
|
const char *get_log_output_encoding(void);
|
|
const char *get_commit_output_encoding(void);
|
|
|
|
int committer_ident_sufficiently_given(void);
|
|
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 */
|
|
void maybe_flush_or_die(FILE *, const char *);
|
|
__attribute__((format (printf, 2, 3)))
|
|
void fprintf_or_die(FILE *, const char *fmt, ...);
|
|
void fwrite_or_die(FILE *f, const void *buf, size_t count);
|
|
void fflush_or_die(FILE *f);
|
|
|
|
#define COPY_READ_ERROR (-2)
|
|
#define COPY_WRITE_ERROR (-3)
|
|
int copy_fd(int ifd, int ofd);
|
|
int copy_file(const char *dst, const char *src, int mode);
|
|
int copy_file_with_time(const char *dst, const char *src, int mode);
|
|
|
|
void write_or_die(int fd, const void *buf, size_t count);
|
|
void fsync_or_die(int fd, const char *);
|
|
int fsync_component(enum fsync_component component, int fd);
|
|
void fsync_component_or_die(enum fsync_component component, int fd, const char *msg);
|
|
|
|
ssize_t read_in_full(int fd, void *buf, size_t count);
|
|
ssize_t write_in_full(int fd, const void *buf, size_t count);
|
|
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.
|
|
*/
|
|
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)))
|
|
void write_file(const char *path, const char *fmt, ...);
|
|
|
|
/* pager.c */
|
|
void setup_pager(void);
|
|
int pager_in_use(void);
|
|
extern int pager_use_color;
|
|
int term_columns(void);
|
|
void term_clear_line(void);
|
|
int decimal_width(uintmax_t);
|
|
int check_pager_config(const char *cmd);
|
|
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);
|
|
|
|
/* 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(struct repository *, const struct object_id *, const struct object_id *, struct object_id *, int);
|
|
void shift_tree_by(struct repository *, 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
|
|
/* All WS_* -- when extended, adapt diff.c emit_symbol */
|
|
#define WS_RULE_MASK 07777
|
|
extern unsigned whitespace_rule_cfg;
|
|
unsigned whitespace_rule(struct index_state *, const char *);
|
|
unsigned parse_whitespace_rule(const char *);
|
|
unsigned ws_check(const char *line, int len, unsigned ws_rule);
|
|
void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws);
|
|
char *whitespace_error_string(unsigned ws);
|
|
void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *);
|
|
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);
|
|
|
|
/* setup.c */
|
|
struct startup_info {
|
|
int have_repository;
|
|
const char *prefix;
|
|
const char *original_cwd;
|
|
};
|
|
extern struct startup_info *startup_info;
|
|
extern const char *tmp_original_cwd;
|
|
|
|
/* merge.c */
|
|
struct commit_list;
|
|
int try_merge_command(struct repository *r,
|
|
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(struct repository *r,
|
|
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);
|
|
|
|
/*
|
|
* 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);
|
|
|
|
/*
|
|
* Should we print an ellipsis after an abbreviated SHA-1 value
|
|
* when doing diff-raw output or indicating a detached HEAD?
|
|
*/
|
|
int print_sha1_ellipsis(void);
|
|
|
|
/* Return 1 if the file is empty or does not exists, 0 otherwise. */
|
|
int is_empty_or_missing_file(const char *filename);
|
|
|
|
#endif /* CACHE_H */
|