A file whose file descriptor is fd contains the following sequence of bytes: 3, 1, 4, 1, 5, 9, 2, 6, 5, 3,5. The following system calls are made: Iseek(fd, 3, SEEK_SET); read(fd, &buffer, 4); where the Iseek call makes a seek to byte 3 of the file (note the file byte offset starts from 0). What does buffer contain after the read has completed? Based on Fig. 1-17, please briefly discuss these 11 steps involved in making the system call read(fd, buffer, nbytes). In the example given in Fig. 1-17, the library procedure is called read and the system call itself is also called read. Is it essential that both of these have the same name? If not, which one is more important? Address OxFFFFFFFF Return to caller Trap to the kernel 5 Put code for read in register Library procedure read 10 4 User space 11 Increment SP Call read 3 Push fd 2 Push &buffer 1 Push nbytes User program calling read 9 Kernel space (Operating system) Dispatch Sys call handler 0 Figure 1-17. The 11 steps in making the system call read(fd, buffer, nbytes)