__fmodeflags.c raw

   1  #include <fcntl.h>
   2  #include <string.h>
   3  
   4  int __fmodeflags(const char *mode)
   5  {
   6  	int flags;
   7  	if (strchr(mode, '+')) flags = O_RDWR;
   8  	else if (*mode == 'r') flags = O_RDONLY;
   9  	else flags = O_WRONLY;
  10  	if (strchr(mode, 'x')) flags |= O_EXCL;
  11  	if (strchr(mode, 'e')) flags |= O_CLOEXEC;
  12  	if (*mode != 'r') flags |= O_CREAT;
  13  	if (*mode == 'w') flags |= O_TRUNC;
  14  	if (*mode == 'a') flags |= O_APPEND;
  15  	return flags;
  16  }
  17