1 #include <fcntl.h> 2 #include <string.h> 3 __fmodeflags(const char * mode)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