Browse Source
Signed-off-by: Elijah Newren <newren@gmail.com> Acked-by: Calvin Wan <calvinwan@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>main
Elijah Newren
2 years ago
committed by
Junio C Hamano
57 changed files with 184 additions and 123 deletions
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#ifndef OBJECT_FILE_H |
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#define OBJECT_FILE_H |
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#include "git-zlib.h" |
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#include "object.h" |
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/* |
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* Set this to 0 to prevent oid_object_info_extended() from fetching missing |
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* blobs. This has a difference only if extensions.partialClone is set. |
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* |
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* Its default value is 1. |
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*/ |
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extern int fetch_if_missing; |
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#define HASH_WRITE_OBJECT 1 |
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#define HASH_FORMAT_CHECK 2 |
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#define HASH_RENORMALIZE 4 |
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#define HASH_SILENT 8 |
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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); |
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int index_path(struct index_state *istate, struct object_id *oid, const char *path, struct stat *st, unsigned flags); |
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/* |
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* Create the directory containing the named path, using care to be |
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* somewhat safe against races. Return one of the scld_error values to |
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* indicate success/failure. On error, set errno to describe the |
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* problem. |
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* |
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* SCLD_VANISHED indicates that one of the ancestor directories of the |
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* path existed at one point during the function call and then |
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* suddenly vanished, probably because another process pruned the |
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* directory while we were working. To be robust against this kind of |
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* race, callers might want to try invoking the function again when it |
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* returns SCLD_VANISHED. |
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* |
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* safe_create_leading_directories() temporarily changes path while it |
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* is working but restores it before returning. |
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* safe_create_leading_directories_const() doesn't modify path, even |
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* temporarily. Both these variants adjust the permissions of the |
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* created directories to honor core.sharedRepository, so they are best |
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* suited for files inside the git dir. For working tree files, use |
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* safe_create_leading_directories_no_share() instead, as it ignores |
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* the core.sharedRepository setting. |
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*/ |
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enum scld_error { |
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SCLD_OK = 0, |
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SCLD_FAILED = -1, |
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SCLD_PERMS = -2, |
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SCLD_EXISTS = -3, |
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SCLD_VANISHED = -4 |
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}; |
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enum scld_error safe_create_leading_directories(char *path); |
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enum scld_error safe_create_leading_directories_const(const char *path); |
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enum scld_error safe_create_leading_directories_no_share(char *path); |
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int mkdir_in_gitdir(const char *path); |
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int git_open_cloexec(const char *name, int flags); |
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#define git_open(name) git_open_cloexec(name, O_RDONLY) |
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/** |
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* unpack_loose_header() initializes the data stream needed to unpack |
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* a loose object header. |
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* |
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* Returns: |
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* |
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* - ULHR_OK on success |
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* - ULHR_BAD on error |
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* - ULHR_TOO_LONG if the header was too long |
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* |
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* It will only parse up to MAX_HEADER_LEN bytes unless an optional |
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* "hdrbuf" argument is non-NULL. This is intended for use with |
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* OBJECT_INFO_ALLOW_UNKNOWN_TYPE to extract the bad type for (error) |
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* reporting. The full header will be extracted to "hdrbuf" for use |
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* with parse_loose_header(), ULHR_TOO_LONG will still be returned |
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* from this function to indicate that the header was too long. |
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*/ |
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enum unpack_loose_header_result { |
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ULHR_OK, |
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ULHR_BAD, |
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ULHR_TOO_LONG, |
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}; |
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enum unpack_loose_header_result unpack_loose_header(git_zstream *stream, |
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unsigned char *map, |
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unsigned long mapsize, |
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void *buffer, |
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unsigned long bufsiz, |
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struct strbuf *hdrbuf); |
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/** |
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* parse_loose_header() parses the starting "<type> <len>\0" of an |
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* object. If it doesn't follow that format -1 is returned. To check |
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* the validity of the <type> populate the "typep" in the "struct |
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* object_info". It will be OBJ_BAD if the object type is unknown. The |
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* parsed <len> can be retrieved via "oi->sizep", and from there |
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* passed to unpack_loose_rest(). |
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*/ |
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struct object_info; |
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int parse_loose_header(const char *hdr, struct object_info *oi); |
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/** |
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* With in-core object data in "buf", rehash it to make sure the |
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* object name actually matches "oid" to detect object corruption. |
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* |
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* A negative value indicates an error, usually that the OID is not |
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* what we expected, but it might also indicate another error. |
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*/ |
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int check_object_signature(struct repository *r, const struct object_id *oid, |
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void *map, unsigned long size, |
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enum object_type type); |
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/** |
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* A streaming version of check_object_signature(). |
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* Try reading the object named with "oid" using |
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* the streaming interface and rehash it to do the same. |
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*/ |
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int stream_object_signature(struct repository *r, const struct object_id *oid); |
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int finalize_object_file(const char *tmpfile, const char *filename); |
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/* Helper to check and "touch" a file */ |
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int check_and_freshen_file(const char *fn, int freshen); |
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void *read_object_with_reference(struct repository *r, |
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const struct object_id *oid, |
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enum object_type required_type, |
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unsigned long *size, |
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struct object_id *oid_ret); |
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#endif /* OBJECT_FILE_H */ |
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