1/* mcat0.c JM 2 * repoduces the basic function of cat 3 S*/ 4 5 int open(char *filename, ...); 6 long read (int fd, void *buffer, unsigned long byte_count); 7 long write(int fd, void *buffer, unsigned long byte_count); 8 int close(int fd); 9 10 int main(int argc, char *args[]) { char buffer; 11 12 13 14 15 16 17} 18 19 20 21} open (args[1], 0); while (read(3, &buffer, 1) > 0) { write(1, &buffer, 1); close (3); return 0;
1/* mcat0.c JM 2 * repoduces the basic function of cat 3 S*/ 4 5 int open(char *filename, ...); 6 long read (int fd, void *buffer, unsigned long byte_count); 7 long write(int fd, void *buffer, unsigned long byte_count); 8 int close(int fd); 9 10 int main(int argc, char *args[]) { char buffer; 11 12 13 14 15 16 17} 18 19 20 21} open (args[1], 0); while (read(3, &buffer, 1) > 0) { write(1, &buffer, 1); close (3); return 0;
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Hello, I need help completing and understanding this data flow diagram for this
![1/* mcat0.c JM
2* repoduces the basic function of cat
3 S*/
4
5 int open(char *filename, ...);
6 long read (int fd, void *buffer, unsigned long byte_count);
7 long write(int fd, void *buffer, unsigned long byte_count);
8 int close(int fd);
9
10 int main(int argc, char *args[]) {
char buffer;
11
12
13
14
15
16
17}
18
19
20
21}
open (args [1], 0);
while (read (3, &buffer, 1) > 0) {
write(1, &buffer, 1);
close (3);
return 0;
CS212
Data-flow Diagram for mcato filel
user space
system space
hardware
hard disk
file1
mcat0
1
data-flow diagram
terminal
screen
keyboard](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd84c1829-b5be-42b1-ba72-3bae7a546286%2Fc2e6c180-c51a-4a07-8da0-a51b2ad48356%2F5whhtu8_processed.png&w=3840&q=75)
Transcribed Image Text:1/* mcat0.c JM
2* repoduces the basic function of cat
3 S*/
4
5 int open(char *filename, ...);
6 long read (int fd, void *buffer, unsigned long byte_count);
7 long write(int fd, void *buffer, unsigned long byte_count);
8 int close(int fd);
9
10 int main(int argc, char *args[]) {
char buffer;
11
12
13
14
15
16
17}
18
19
20
21}
open (args [1], 0);
while (read (3, &buffer, 1) > 0) {
write(1, &buffer, 1);
close (3);
return 0;
CS212
Data-flow Diagram for mcato filel
user space
system space
hardware
hard disk
file1
mcat0
1
data-flow diagram
terminal
screen
keyboard
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