swarga/AAE-CNAS-Labs
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Basic functionality

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This commit is contained in:
Sergiusz Warga 2021-03-03 16:39:18 +01:00
parent f621349ca7
commit 261174c8c4
1 changed files with 3 additions and 6 deletions
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Topic-1/main.c
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@ -30,14 +30,11 @@ int cp(char *argv[]){
old = open(argv[1], O_RDONLY); old = open(argv[1], O_RDONLY);
new = open(argv[2], O_CREAT | O_WRONLY); new = open(argv[2], O_CREAT | O_WRONLY);
char buffer[BUFFER_SIZE]; char buffer[BUFFER_SIZE];
int read_bytes;
int read_bytes = read(old, buffer, sizeof(buffer)); while ((read_bytes = read(old, buffer, sizeof(buffer))) > 0) {
if (read_bytes < 0) { write(new, buffer, read_bytes);
fprintf(stderr, "There was a problem with reading a file!\n");
return 3;
} }
printf("%d bytes were read", read_bytes);
write(new, buffer, read_bytes);
close(old); close(old);
close(new); close(new);