diff cpx.c @ 7:e5a905df7e0b draft

Uploaded

--- a/cpx.c	Thu Mar 08 09:18:40 2012 -0500
+++ b/cpx.c	Thu Oct 04 14:48:02 2012 -0400
@@ -143,10 +143,13 @@
 {
 //    printf("Copying %s to %s\n",src,dst);
 
-    int c;
+    char *c;
     FILE *fs,*ft;
     struct stat fileStat;
-
+    size_t st=10000000;
+    int numr,numw;
+   
+//    buffer = 10000;
 /* must be able to stat file */
     if (stat(src, &fileStat) < 0)
     {
@@ -172,14 +175,28 @@
         exit(1);
     }
 
-    c = getc(fs);
-    while (c != EOF) {
-        putc(c,ft);
-        c = getc(fs);
-   }
-
+    c=malloc(st);
+    while(feof(fs)==0)
+    {	
+        if((numr=fread(c,1,st,fs))!=st)
+        {
+            if(ferror(fs)!=0)
+            {
+                fprintf(stderr,"read file error.\n");
+                exit(1);
+            }
+            else if(feof(fs)!=0);
+        }
+        if((numw=fwrite(c,1,numr,ft))!=numr)
+        {
+            fprintf(stderr,"write file error.\n");
+            exit(1);
+        }
+    }	
+	
    fclose(fs);
    fclose(ft);
+   free(c);
 
    return 0;
 
@@ -240,12 +257,21 @@
         exit(1);
     }
 
+    if (!strncmp(argv[1],"/data",5) || !strncmp(argv[1],"/home",5))
+    {
+
 /* is file readable by given user? */
-    explodePath(argv[1],argv[3]);
+      explodePath(argv[1],argv[3]);
 
 /* copy the file and change the owner */
-    copyFile(argv[1],argv[2]);
-    chownToUser(argv[2]);
+      copyFile(argv[1],argv[2]);
+      chownToUser(argv[2]);
+    }
+    else 
+    {
+      fprintf(stderr,"%s: Permission denied.\n",argv[1]);
+      exit(1);
+    }
 
     exit(0);
 }