int main(int argc, char *argv[])
{
FILE *fp; int i, j;
char buf[1024 * BLKSZ_1K];
int blksz = BLKSZ_1K;
u32 *index; u8 *rb, *blk_end;
int rlen, nlen; char *name;
if(argc != 2)
err_usr("wrong command\n");
fp = fopen(argv[1], "r");
if(fp == NULL)
err_sys("fail to fopen");
fread(buf, sizeof(char), 1024 * BLKSZ_1K, fp);
// 获取根目录inode管理结构中的index数组
index = root_index(buf, BLKSZ_1K);
for(i = 0; i < 12; i++){
if(!index[i])
continue;
//求index[i]号的盘块的地址
rb = (u8 *)blk_to_addr(buf, BLKSZ_1K, index[i]);
blk_end = rb + BLKSZ_1K; //此块的末地址
while(rb < blk_end){
rlen = *((u16 *)(rb + 4));//根据存放根目录内容的盘块的地址，偏移到存放此条目录项长度的地址，并取出此目录项的长度.
nlen = *((u8 *)(rb + 6));//求目录项中文件名的长度.
name = (u8 *)(rb + 8);//求文件名首地址.
for(j = 0; j < nlen; j++)
putchar(name[j]);
putchar('\n');
rb += rlen;
}
}
fclose(fp);
return 0;
}
int main(int argc, char *argv[])
{
int in, out;
char *s, *d;
int len, i;
if(argc != 3)
err_usr("usage: ./mycp src dst\n");
in = open(argv[1], O_RDONLY);
if(in == -1)
err_sys("open error");
out = open(argv[2],
O_RDWR | O_CREAT | O_TRUNC, 0644);/*如果是只写，则不能建立映射区*/
if(out == -1)
err_sys("open error");
len = lseek(in, 0, SEEK_END);
s = (char *)mmap(NULL, len,
PROT_READ, MAP_PRIVATE, in, 0);
if(s == MAP_FAILED)
err_sys("mmap error");
lseek(out, len - 1, SEEK_SET);
write(out, "a", 1);
d = (char *)mmap(NULL, len,
PROT_WRITE, MAP_SHARED, out, 0);
if(d == MAP_FAILED)
err_sys("mmap error");
close(in); close(out);
for(i = 0; i < len; i++)
d[i] = s[i];
munmap(d, len);
munmap(s, len);
return 0;
}
int main(int argc, char *argv[])
{
FILE *fp; int i, j;
char buf[1024 * BLKSZ_1K];
int blksz = BLKSZ_1K;
u32 *index; u8 *rb, *blk_end;
int rlen, nlen; char *name;
if(argc != 2)
err_usr("wrong command\n");
fp = fopen(argv[1], "r");
if(fp == NULL)
err_sys("fail to fopen");
fread(buf, sizeof(char), 1024 * BLKSZ_1K, fp);
index = root_index(buf, BLKSZ_1K);
for(i = 0; i < 12; i++){
if(!index[i])
continue;
rb = (u8 *)blk_to_addr(buf, BLKSZ_1K, index[i]);
blk_end = rb + BLKSZ_1K;
while(rb < blk_end){
rlen = *((u16 *)(rb + 4));
nlen = *((u8 *)(rb + 6));
name = (u8 *)(rb + 8);
for(j = 0; j < nlen; j++)
putchar(name[j]);
putchar('\n');
rb += rlen;
}
}
fclose(fp);
return 0;
}
int argv_analy(int cfd, char *path)
{
int len, pos_con, pos_ip, pos_file = 0;
char *download_file, buf[N], *upload_file, *file;
int fp, n;
len = strlen(path);
pos_con = is_have_m('-', path, len);
if(pos_con == -1)/*不含'-'*/
err_sys("is_have_m('-') error");
pos_ip = is_have_m(':', path, len);
if(pos_ip == -1)
err_sys("is_have_m(':') error");
if(pos_ip < pos_con){/*download, need to write*/
int len_downfile;
if(strncmp(path,SERV_IP, strlen(SERV_IP))!=0)
err_usr("ip wrong");
len_downfile = pos_con - pos_ip;
download_file = malloc(sizeof(char) * len_downfile);
strncpy(download_file, &path[pos_ip + 1], len_downfile - 1);
printf("download_file : %s\n",download_file);
printf("start download...\n");
fp = open(download_file, O_RDONLY);
if(fp == -1)
err_sys("open file error");
while((n = read(fp, buf, N)) != 0)
write(cfd, buf, n);
printf("download finish...\n");
close(fp);
free(download_file);
}else if(pos_ip > pos_con){/*upload, need to read*/
int len_upfile;
if(strncmp(&path[pos_con + 1],SERV_IP, strlen(SERV_IP))!=0)
err_usr("ip wrong");
len_upfile = pos_con;
upload_file = malloc(sizeof(char) * (len_upfile + 1));
strncpy(upload_file, path, len_upfile);
upload_file[len_upfile] = '\0';
printf("upload_file : %s\n",upload_file);
while((pos_file = is_have_m('/', upload_file, len_upfile)) != -1){
len_upfile = strlen(upload_file);
strncpy(upload_file, &upload_file[pos_file + 1], len_upfile - pos_file - 1);
upload_file[len_upfile - pos_file -1] = '\0';
}
file = malloc((len_upfile + strlen(&path[pos_ip + 1]) + 1) * sizeof(char));
bzero(file, len_upfile + strlen(&path[pos_ip + 1]) + 1);
if(path[pos_ip + 1] != '.')
sprintf(file,"%s%c%s", &path[pos_ip + 1], path[len - 1] == '/' ? ' ':'/', upload_file);
else
sprintf(file, "./%s",upload_file);
printf("start upload...\n");
fp = open(file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if(fp == -1){
printf("open file error in argv_analy\n");
return -1;
}
while((n = read(cfd, buf, N))!= 0)
write(fp, buf, n);
printf("upload finish...\n");
close(fp);
free(upload_file);
free(file);
}
return cfd;
}
