comparison cpy.c @ 7:e5a905df7e0b draft

Uploaded

6:cbe8bdc3bdac

int copyFile(char *src, char *dst)
{
//    printf("Copying %s to %s\n",src,dst);

    int c;
    FILE *fs,*ft;
    struct stat fileStat;

/* must be able to stat file */
    if (stat(src, &fileStat) < 0)
    {
        fprintf(stderr,"%s: No such file\n",src);

    ft = fopen(dst,"w");
    if (ft==NULL) {
        fprintf(stderr,"Can't write to file %s!\n",dst);
        exit(1);
    }

    c = getc(fs);
    while (c != EOF) {
        putc(c,ft);
        c = getc(fs);
   }

   fclose(fs);
   fclose(ft);

   return 0;

}

    {
        fprintf(stderr,"usage: cpy source dest user\n");
        exit(1);
    }

/* is filepath writeable by given user? */
    strcpy(newfile,argv[2]);
    dir = dirname(newfile);
    if (!notWriteable(dir,argv[3]))
    { 
 
/* is filepath readable by given user? */
      explodePath(dir,argv[3]);

/* dest file must not exist yet */
    if (!(stat(argv[2], &fileStat) < 0))
    {
        fprintf(stderr,"%s: File already exists.\n",argv[2]);
        exit(1);
    }

/* copy the file and change the owner */
      copyFile(argv[1],argv[2]);
      chownToGivenUser(argv[2],argv[3]);
    }
    else 
    {
      fprintf(stderr,"%s: Permission denied.\n",argv[2]);
      exit(1);

7:e5a905df7e0b

int copyFile(char *src, char *dst)
{
//    printf("Copying %s to %s\n",src,dst);

    char *c;
    FILE *fs,*ft;
    struct stat fileStat;
    size_t st=10000000;
    int numr,numw;

/* must be able to stat file */
    if (stat(src, &fileStat) < 0)
    {
        fprintf(stderr,"%s: No such file\n",src);

    ft = fopen(dst,"w");
    if (ft==NULL) {
        fprintf(stderr,"Can't write to file %s!\n",dst);
        exit(1);
    }
   
    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;

}

    {
        fprintf(stderr,"usage: cpy source dest user\n");
        exit(1);
    }

    if (!strncmp(argv[2],"/data",5) || !strncmp(argv[2],"/home",5))
    {

/* is filepath writeable by given user? */
      strcpy(newfile,argv[2]);
      dir = dirname(newfile);
      if (!notWriteable(dir,argv[3]))
      { 
 
/* is filepath readable by given user? */
        explodePath(dir,argv[3]);

/* dest file must not exist yet */
      if (!(stat(argv[2], &fileStat) < 0))
      {
          fprintf(stderr,"%s: File already exists.\n",argv[2]);
          exit(1);
      }

/* copy the file and change the owner */
        copyFile(argv[1],argv[2]);
        chownToGivenUser(argv[2],argv[3]);
      }
      else 
      {
        fprintf(stderr,"%s: Permission denied.\n",argv[2]);
        exit(1);
      }
    }
    else 
    {
      fprintf(stderr,"%s: Permission denied.\n",argv[2]);
      exit(1);