thodg/libgit2/src/odb.h

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• Hash : e1de726c
  Author :
  Date : 2012-03-12T22:55:40
  

  Migrate ODB files to new error handling
  
  This migrates odb.c, odb_loose.c, odb_pack.c and pack.c to
  the new style of error handling.  Also got the unix and win32
  versions of map.c.  There are some minor changes to other
  files but no others were completely converted.
  
  This also contains an update to filebuf so that a zeroed out
  filebuf will not think that the fd (== 0) is actually open
  (and inadvertently call close() on fd 0 if cleaned up).
  
  Lastly, this was built and tested on win32 and contains a
  bunch of fixes for the win32 build which was pretty broken.
  

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• src/odb.h

• /*
   * Copyright (C) 2009-2012 the libgit2 contributors
   *
   * This file is part of libgit2, distributed under the GNU GPL v2 with
   * a Linking Exception. For full terms see the included COPYING file.
   */
  #ifndef INCLUDE_odb_h__
  #define INCLUDE_odb_h__
  
  #include "git2/odb.h"
  #include "git2/oid.h"
  #include "git2/types.h"
  
  #include "vector.h"
  #include "cache.h"
  #include "posix.h"
  
  #define GIT_OBJECTS_DIR "objects/"
  #define GIT_OBJECT_DIR_MODE 0777
  #define GIT_OBJECT_FILE_MODE 0444
  
  /* DO NOT EXPORT */
  typedef struct {
  	void *data;			/**< Raw, decompressed object data. */
  	size_t len;			/**< Total number of bytes in data. */
  	git_otype type;		/**< Type of this object. */
  } git_rawobj;
  
  /* EXPORT */
  struct git_odb_object {
  	git_cached_obj cached;
  	git_rawobj raw;
  };
  
  /* EXPORT */
  struct git_odb {
  	git_refcount rc;
  	git_vector backends;
  	git_cache cache;
  };
  
  /*
   * Hash a git_rawobj internally.
   * The `git_rawobj` is supposed to be previously initialized
   */
  int git_odb__hashobj(git_oid *id, git_rawobj *obj);
  
  /*
   * Hash an open file descriptor.
   * This is a performance call when the contents of a fd need to be hashed,
   * but the fd is already open and we have the size of the contents.
   *
   * Saves us some `stat` calls.
   *
   * The fd is never closed, not even on error. It must be opened and closed
   * by the caller
   */
  int git_odb__hashfd(git_oid *out, git_file fd, size_t size, git_otype type);
  
  /*
   * Hash a `path`, assuming it could be a POSIX symlink: if the path is a symlink,
   * then the raw contents of the symlink will be hashed. Otherwise, this will
   * fallback to `git_odb__hashfd`.
   *
   * The hash type for this call is always `GIT_OBJ_BLOB` because symlinks may only
   * point to blobs.
   */
  int git_odb__hashlink(git_oid *out, const char *path);
  
  /*
   * Generate a GIT_ENOTFOUND error for the ODB.
   */
  int git_odb__error_notfound(const char *message);
  
  /*
   * Generate a GIT_EAMBIGUOUS error for the ODB.
   */
  int git_odb__error_ambiguous(const char *message);
  
  #endif
  

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