1#include <fcntl.h> 2#include <string.h> 3 4int __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