void recv_request(int newfd)
{
char buf[2048];
int ret;
while(1)
{
bzero(buf,sizeof(buf));
ret=recv(newfd,buf,sizeof(buf),0);
if(ret==0)
{
break;
}
if(strncmp("cd",buf,2)==0)
{
do_cd(newfd,buf);
}else if(strncmp("ls",buf,2)==0)
{
do_ls(newfd,buf);
}else if(strncmp("puts",buf,4)==0)
{
do_puts(newfd);
}else if(strncmp("gets",buf,4)==0)
{
do_gets(newfd,buf);
}else if(strncmp("remove",buf,6)==0)
{
do_remove(newfd,buf);
}else if(strncmp("pwd",buf,3)==0)
{
do_pwd(newfd,buf);
}else{
continue;
}
}
}
/* --------------------------------------------------------
do_pwd:
* recursively follow a pathname back to a root
*
* base case: dir is a ROOT
* if not base case:
* (1) get_block and point DIR* dp to start
of second block, which is ..
* (2) use dp to get parent's ino
* (3) load parent MINODE using iget
* (4) Recusively call do_pwd(parent)
* (5) print / and directory name
-------------------------------------------------------------*/
void do_pwd(MINODE* dir)
{
MINODE* parent;
int pino, ino;
char* cp;
DIR* dp;
char buf[BLOCK_SIZE];
// (1) Base case: DIR is root
if(dir == root)
{
printf("/");
return;
}
// Read in i_block[0],
// which contains all of the directories contained in this DIR
get_block(dir->dev, dir->INODE.i_block[0], buf);
// Point to the beginning of the datablock
cp = buf;
dp = (DIR*) cp;
// Get ino number of current directory
ino = dp->inode;
// go to second data block, get ino of ..
cp += dp->rec_len;
dp = (DIR* )cp;
// dp now points to .., the parent's directory
pino = dp->inode; // get parent's ino
// Load the parent MINODE*
parent = iget(dir->dev, pino);
// Call pwd with parent's MINODE pointer
do_pwd(parent);
if(parent == NULL)
{
printf("Error: could not load MINODE %s", dp->name);
return;
}
// (3) Print name followed by /
// Search parent DIR for an entry with this ino
// Get the name associated with this ino
char* dirName = findmyname(parent, ino);
printf("%s/", dirName);
iput(parent);
}
void client_handle(psession_t ps)
{
socket_t fd_client = ps -> sess_sfd ;
int cmd_len = 0 ;
int recv_ret ;
while(1 )
{
bzero(ps -> sess_buf, BUF_SIZE);
recv_ret = recv(fd_client, &cmd_len, sizeof(int),0);
if(cmd_len == 0 || recv_ret == 0)
{
printf("client exit !\n");
close(ps ->sess_sfd);
free(ps);
exit(1);
}
recvn(fd_client, ps->sess_buf, cmd_len);
if(strncmp("cd", ps ->sess_buf, 2) == 0)
{
do_cd(ps);
}else if(strncmp("ls", ps ->sess_buf, 2) == 0)
{
do_ls(ps);
}else if( strncmp("puts", ps ->sess_buf, 4)== 0)
{
do_puts(ps);
}else if( strncmp("gets", ps ->sess_buf, 4)== 0)
{
do_gets(ps);
}else if( strncmp("remove", ps ->sess_buf, 6)== 0)
{
do_remove(ps);
}else if(strncmp("pwd", ps ->sess_buf, 3) == 0)
{
do_pwd(ps);
}else
{
continue ;
}
}
}
void runbuildin(BuildInType command)
{
switch(command)
{
case CD:
do_cd();
break;
case PWD:
do_pwd();
break;
case EXIT:
do_exit();
break;
case HISTORY:
do_history();
break;
case NO:/* nothing */
default:break;
}
}
/* --------------- driver to for recursive do_pwd() --------------*/
void pwd()
{
do_pwd(running->cwd);
printf("\n");
}
void runProcess( Proc *proc, pid_t pgid, int fg, int inputFile, int outputFile, int errorFile)
{
// wrzucenie procesu do grupy procesow i danie przekazanie grupy terminalowu jezeli jest to stosowne
// utowrzenie grupy lub dolaczenie do juz istniejacej
pid_t pid = getpid();
if( pgid == 0 )
pgid = pid;
setpgid(pid, pgid);
// jesli w foreground to oddajemy terminal dla grupy procesow
if(fg == 1)
{
tcsetpgrp( shellTerminal, pgid );
}
struct sigaction act;
act.sa_handler = SIG_DFL; /* set up signal handler */
act.sa_flags = 0;
// kiedy shell przejmuje kontrole, powinien ignorowac ponizsze sygnaly, zeby samemu sie przypadkowo nie killnac
sigaction(SIGINT, &act, NULL);
// powrot do ustawien domyslnych (przez nasz shell te sygnaly byly ignorowane)
sigaction(SIGINT, &act, NULL);
sigaction(SIGQUIT, &act, NULL);
sigaction(SIGCHLD, &act, NULL);
sigaction(SIGTSTP, &act, NULL);
sigaction(SIGTTIN, &act, NULL);
sigaction(SIGTTOU, &act, NULL);
// ustawienie standardowego I/O dla nowego procesu
// jesli wyjscia sa inne niz standardowe to zamieniamy je - przekierowanie wyjscia
if(inputFile != STDIN_FILENO)
{
dup2(inputFile, STDIN_FILENO);
close(inputFile);
}
if(outputFile != STDOUT_FILENO)
{
dup2(outputFile, STDOUT_FILENO);
close(outputFile);
}
if(errorFile != STDERR_FILENO)
{
dup2(errorFile, STDERR_FILENO);
close(errorFile);
} if(strcmp(proc->argv[0], "pwd") == 0)
{
do_pwd();
}
else if(strcmp(proc->argv[0], "cd") == 0)
{
do_cd(proc->argv[1]);
}
else if(strcmp(proc->argv[0], "ls") == 0)
{
do_ls(proc->argv[1]);
}
else if(strcmp(proc->argv[0], "mkdir") == 0)
{
do_mkdir(proc->argv[1]);
}
else if(strcmp(proc->argv[0], "rmdir") == 0)
{
do_rmdir(proc->argv[1]);
}
else if(strcmp(proc->argv[0], "touch") == 0)
{
do_touch(proc->argv[1]);
}
else if(strcmp(proc->argv[0], "rm") == 0)
{
do_rm(proc->argv[1]);
}
else if(strcmp(proc->argv[0], "cp") == 0)
{
do_cp(proc->argv[1], proc->argv[2]);
}
else if(strcmp(proc->argv[0], "echo") == 0)
{
do_echo(proc->argv[1]);
}
else
run(proc->argv[0], proc->argv);
//execvp(proc->argv[0], proc->argv);
// nie powinien wykonac exit'a przy poprawnym wykonaniu
//exit(-1);
}
