1) The specific function prototypes are shown below:
a) int open(const char *pathnameˈ int flagsˈ int mode);
b) int read(int fdˈ char *bufˈ size_t count);
c) int write(int fdˈ const char *bufˈ size_t count);
d) int ioctl(int fdˈ int requestˈ Ă);
e) int close(int fd);