init commit

3sem/seminars/l3/01.c

@@ -0,0 +1,40 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/file.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+int
+main(int argc, char *argv[])
+{
+
+    char *fin = argv[1];
+    char *fout = argv[2];
+
+    // printf("fdin: %d\n", fin);
+
+    int fdin = open(fin, O_RDONLY);
+    if (fdin == -1) {
+        return 1;
+    }
+
+    int fdout = open(fout, O_WRONLY | O_CREAT | O_TRUNC, 0777);
+    for (;;) {
+        char c[1024];
+        int r = read(fdin, c, 1024);
+        if (r == -1) {
+            return 1;
+        }
+        if (r == 0) {
+            break;
+        }
+        write(fdout, c, r);
+    }
+
+    close(fdin);
+    close(fdout);
+
+    return 0;
+}