60 lines
1.0 KiB
C
60 lines
1.0 KiB
C
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#define BUFFER_SIZE 4096
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
if (argc < 3) {
|
|
fprintf(stderr, "Usage: %s SRC DEST", argv[0]);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
const char *src = argv[1];
|
|
const char *dest = argv[2];
|
|
|
|
FILE *fp1 = fopen(src, "rb");
|
|
if (fp1 == NULL) {
|
|
perror("cannot open source file");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
FILE *fp2 = fopen(dest, "wb");
|
|
if (fp2 == NULL) {
|
|
perror("cannot open destination file");
|
|
fclose(fp1);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
size_t nread;
|
|
unsigned char buff[BUFFER_SIZE];
|
|
while ((nread = fread(buff, 1, sizeof(buff), fp1)) > 0) {
|
|
if (fwrite(buff, 1, nread, fp2) != nread) {
|
|
perror("fwrite");
|
|
fclose(fp1);
|
|
fclose(fp2);
|
|
return EXIT_FAILURE;
|
|
}
|
|
}
|
|
|
|
if (ferror(fp1)) {
|
|
perror("read error");
|
|
fclose(fp1);
|
|
fclose(fp2);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
if (fclose(fp1) != 0) {
|
|
perror("cannot close source file");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
if (fclose(fp2) != 0) {
|
|
perror("cannot close destination file");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|