kc3-lang/libressl/tls/compat/pread.c

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• Hash : 1fb8c9c6
  Author :
  Date : 2018-03-18T00:38:14
  

  Fix using right functions for file descriptor with MS Visual Studio
  

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• tls/compat/pread.c

• /*
   * Public domain
   *
   * Kinichiro Inoguchi <inoguchi@openbsd.org>
   */
  
  #ifdef _WIN32
  
  #define NO_REDEF_POSIX_FUNCTIONS
  
  #include <unistd.h>
  
  ssize_t
  pread(int d, void *buf, size_t nbytes, off_t offset)
  {
  	off_t cpos, opos, rpos;
  	ssize_t bytes;
  	if((cpos = lseek(d, 0, SEEK_CUR)) == -1)
  		return -1;
  	if((opos = lseek(d, offset, SEEK_SET)) == -1)
  		return -1;
  	if((bytes = read(d, buf, nbytes)) == -1)
  		return -1;
  	if((rpos = lseek(d, cpos, SEEK_SET)) == -1)
  		return -1;
  	return bytes;
  }
  
  #endif
  

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