thodg/libgit2/src/amiga/map.c

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• Hash : d043013f
  Author :
  Date : 2012-06-14T19:09:42
  

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• src/amiga/map.c

• /*
   * 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.
   */
  #include <git2/common.h>
  
  #ifndef GIT_WIN32
  
  #include "posix.h"
  #include "map.h"
  #include <errno.h>
  
  int p_mmap(git_map *out, size_t len, int prot, int flags, int fd, git_off_t offset)
  {
  	GIT_MMAP_VALIDATE(out, len, prot, flags);
  
  	out->data = NULL;
  	out->len = 0;
  
  	if ((prot & GIT_PROT_WRITE) && ((flags & GIT_MAP_TYPE) == GIT_MAP_SHARED)) {
  		giterr_set(GITERR_OS, "Trying to map shared-writeable");
  		return -1;
  	}
  
  	if((out->data = malloc(len))) {
  		p_lseek(fd, offset, SEEK_SET);
  		p_read(fd, out->data, len);
  	}
  
  	if (!out->data || (out->data == MAP_FAILED)) {
  		giterr_set(GITERR_OS, "Failed to mmap. Could not write data");
  		return -1;
  	}
  
  	out->len = len;
  
  	return 0;
  }
  
  int p_munmap(git_map *map)
  {
  	assert(map != NULL);
  	free(map->data);
  
  	return 0;
  }
  
  #endif
  
  

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