97dc141fd6
The `git_open_cloexec()` wrapper function provides the ability to open a file with `O_CLOEXEC` in a platform-agnostic way. This function is provided by "object-file.c" even though it is not specific to the object subsystem at all. Move the file into "compat/open.c". This file already exists before this commit, but has only been compiled conditionally depending on whether or not open(3p) may return EINTR. With this change we now unconditionally compile the object, but wrap `git_open_with_retry()` in an ifdef. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
100 lines
3.2 KiB
C
100 lines
3.2 KiB
C
#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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struct index_state;
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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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* 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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enum finalize_object_file_flags {
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FOF_SKIP_COLLISION_CHECK = 1,
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};
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int finalize_object_file(const char *tmpfile, const char *filename);
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int finalize_object_file_flags(const char *tmpfile, const char *filename,
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enum finalize_object_file_flags flags);
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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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