int
main(int argc, char *argv[])
{
char fd;
if (argc != 2)
usage();
if ((fd = open(".", O_RDONLY | O_DIRECTORY)) == -1)
err(1, "open .");
if (chdir(argv[1]) == -1)
err(1, "chdir %s", argv[1]);
print_cwd();
if (fchdir(fd) == -1)
err(1, "fchdir");
print_cwd();
if (close(fd) == -1)
err(1, "close");
exit(0);
}
int main(int argc, char **argv)
{
print_cwd();
//int chdir(const char *path);
if (chdir("/tmp") < 0)
{
fprintf(stderr, "Change CWD to \"/tmp\" failed: %s\n", strerror(errno));
exit(1);
}
print_cwd();
return 0;
}
int main (int argc, const char * argv[]) {
print_cwd();
// prepare source dir content
{
mkdir_source();
chdir_source();
create_file("myfile");
system("/usr/bin/SetFile -d 01/01/2001 myfile");
chdir_parent();
}
// copy content from source dir to target dir
system("/bin/cp -Rp source target");
// verify target dir content
{
struct timespec t1 = get_birthtime("source/myfile");
struct timespec t2 = get_birthtime("target/myfile");
if((t1.tv_sec != t2.tv_sec) || (t1.tv_nsec != t2.tv_nsec)) {
printf("TEST FAILED: birthtime on myfile differs\n");
} else {
printf("TEST SUCCESS: birthtime is copied correct, birthtime is the same");
}
}
return EXIT_SUCCESS;
}
void cd(char *dirnm)
{
if(!chdir(dirnm)) /* chdir returns 0 on success */
{
print_cwd();
}
else
{
perror("ERROR");
}
}
/*
Handles child 2
*/
void handle_child2()
{
sleep(1);
print_pid("C2");
sleep(3);
adjust_whale("C2", 5);
sleep(3);
print_cwd("C2");
_exit(0);
}
int main (int argc, const char * argv[]) {
print_cwd();
// prepare source dir content
{
mkdir_source();
chdir_source();
create_file("myfile");
create_symlink("myfile", "mylink");
system("/usr/bin/SetFile -P -m 11/11/2011 mylink");
system("/usr/bin/SetFile -m 01/01/2001 myfile");
chdir_parent();
}
// copy content from source dir to target dir
system("/bin/cp -Rp source target");
// verify target dir content
{
int ok = 1;
{
struct timespec t1 = get_mtime("source/myfile");
struct timespec t2 = get_mtime("target/myfile");
if((t1.tv_sec != t2.tv_sec) || (t1.tv_nsec != t2.tv_nsec)) {
printf("TEST FAILED: timestamp on myfile differs\n");
ok = 0;
}
}
{
struct timespec t1 = get_mtime("source/mylink");
struct timespec t2 = get_mtime("target/mylink");
if((t1.tv_sec != t2.tv_sec) || (t1.tv_nsec != t2.tv_nsec)) {
printf("TEST FAILED: timestamp on mylink differs\n");
ok = 0;
}
}
if(ok) {
printf("TEST SUCCESS: mtime is copied correct, mtime is the same");
}
}
return EXIT_SUCCESS;
}
int main(void)
{
/* print PIDs */
print_pid("P0");
/* User/Hostname */
print_userhost();
/* Time */
print_time();
/* CWD */
print_cwd("P0");
/* Create ENV Var */
putenv(env_var); // to change env variable, change actual character pointer
handle_processes();
return 0;
}
int main(int argc, char *argv[])
{
int i,j=0,s1=0,s2=0,s3=0,len,out_fd,N,flag=1;
char s[size],s11[size],s22[size],s33[size],ch[5];
int sockfd, numbytes,in_fd;
char buf[MAXDATASIZE];
struct hostent *he;
struct sockaddr_in their_addr; // connector’s address information
if (argc != 2)
{
fprintf(stderr,"usage: client hostname\n");
exit(1);
}
if ((he=gethostbyname(argv[1])) == NULL)
{
perror("gethostbyname");
exit(1);
}
// get the host info
if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
{
perror("socket");
exit(1);
}
their_addr.sin_family = AF_INET;
// host byte order
their_addr.sin_port = htons(PORT); // short, network byte order
their_addr.sin_addr = *((struct in_addr *)he->h_addr);
memset(&(their_addr.sin_zero),'\0', 8); // zero the rest of the struct
if (connect(sockfd, (struct sockaddr *)&their_addr,sizeof(struct sockaddr)) == -1)
{
perror("connect");
exit(1);
}
if ((numbytes=recv(sockfd, buf, MAXDATASIZE-1, 0)) == -1)
{
perror("recv");
exit(1);
}
buf[numbytes] = '\0';
printf("%s",buf);
while(1)
{
printf("Myserver:-$ ");
gets(s);
len=strlen(s);
for(i=0;i<len;i++)
{
if(s[i] == ' ')
{
j++;
}
else
{
if(j==0)
{
s11[s1]=s[i];
s1++;
}
if(j==1)
{
s22[s2]=s[i];
s2++;
}
if(j==2)
{
s33[s3]=s[i];
s3++;
}
}
}
s11[s1++]='\0';
s22[s2++]='\0';
s33[s3++]='\0';
if( strcmp(s11,"ls")==0 || strcmp(s11,"bye")==0 || strcmp(s11,"lls")==0 || strcmp(s11,"clear")==0 || strcmp(s11,"get")==0 || strcmp(s11,"lcd")==0 || strcmp(s11,"lpwd")==0 || strcmp(s11,"cd")==0 || strcmp(s11,"pwd")==0 || strcmp(s11,"put")==0 || strcmp(s11,"mget")==0 || strcmp(s11,"mput")==0)
{
if(strcmp(s11,"lls")==0)
{
system("ls");
}
if(strcmp(s11,"clear")==0)
{
system("clear");
}
if(strcmp(s11,"lcd")==0)
{
if(j==1)
{
cd(s22);
}
else
{
printf("Command line error !!\n");
}
}
if(strcmp(s11,"cd")==0)
{
if(j==1)
{
if (send(sockfd,s,strlen(s), 0) == -1)
perror("send");
if ((numbytes=recv(sockfd, buf,sizeof(buf), 0)) == -1)
{
perror("recv");
exit(1);
}
buf[numbytes]='\0';
if(strcmp(buf,"ERROR")!=0)
{
printf("Server Current Directory = %s\n",buf);
}
else
{
printf("ERROR: No such directory !!\n");
}
}
else
{
printf("Command line error !!\n");
}
}
if(strcmp(s11,"lpwd")==0)
{
if(j==0)
print_cwd();
else
printf("Command line error !!\n");
}
if(strcmp(s11,"pwd")==0)
{
if(j==0)
{
if (send(sockfd,s,strlen(s), 0) == -1)
perror("send");
if ((numbytes=recv(sockfd, buf,sizeof(buf), 0)) == -1)
{
perror("recv");
exit(1);
}
buf[numbytes]='\0';
printf("Server Current directory = %s\n",buf);
}
else
printf("Command line error !!\n");
}
if(strcmp(s11,"put")==0)
{
if(j==1)
{
if( (in_fd=open(s22, O_RDONLY)) == -1 )
{
printf("%s file is not present...!!\n",s22);
}
else
{
if (send(sockfd,s,strlen(s), 0) == -1)
perror("send");
put(sockfd,in_fd,s22);
}
}
else
{
printf("Invalid argument...!!\n");
}
}
if(strcmp(s11,"mput")==0)
{
if(j==2)
{
for(N=1;N<=j;N++)
{
if(N==1)
{
if( (in_fd=open(s22, O_RDONLY)) == -1 )
{
printf("%s file is not present...!!\n",s22);
}
else
{
if (send(sockfd,s,strlen(s), 0) == -1)
perror("send");
put(sockfd,in_fd,s22);
}
}
if(N==2)
{
if( (in_fd=open(s33, O_RDONLY)) == -1 )
{
printf("%s file is not present...!!\n",s33);
}
else
{
if (send(sockfd,s,strlen(s), 0) == -1)
perror("send");
put(sockfd,in_fd,s33);
}
}
}
}
else
{
printf("Invalid argument...!!\n");
}
}
if(strcmp(s11,"get")==0)
{
if(j==2)
{
if (send(sockfd,s,strlen(s), 0) == -1)
perror("send");
if ((numbytes=recv(sockfd, buf,sizeof(buf), 0)) == -1)
{
perror("recv");
exit(1);
}
buf[numbytes]='\0';
if(strcmp(buf,"SUCCES")==0)
{
if( (out_fd=creat(s33, COPYMORE)) == -1 )
{
printf("ERROR OCCURE !!\n");
if (send(sockfd,"####",4, 0) == -1)
perror("send");
}
else
{
printf("please wait some time while file is reciving...");
if (send(sockfd,"#",1, 0) == -1)
perror("send");
while(1)
{
if ((numbytes=recv(sockfd, buf,sizeof(buf), 0)) == -1)
{
perror("recv");
exit(1);
}
if( strcmp(buf,"$$$$") ==0)
{
break;
}
if( write(out_fd, buf, numbytes) != numbytes )
{
printf("ERROR OCCURE !!\n");
break;
}
if (send(sockfd,"##",2, 0) == -1)
perror("send");
}
printf("\n\n%s file succesfuly recived...\n",s33);
}
}
else
{
printf("ERROR: %s file not present\n",s22);
}
}
else
{
printf("Invalid arguments !!\n");
}
}
if(strcmp(s11,"mget")==0)
{
if(j==2 || j==1)
{
if (send(sockfd,s,strlen(s), 0) == -1)
perror("send");
for(N=1;N<=j;N++)
{
if ((numbytes=recv(sockfd, buf,sizeof(buf), 0)) == -1)
{
perror("recv");
exit(1);
}
buf[numbytes]='\0';
if(strcmp(buf,"SUCCES")==0)
{
if(N==1)
printf("%s file is ready to recive. If u want to\nsave then enter 'y' or else 'n': ",s22);
if(N==2)
printf("%s file is ready to recive. If u want to\n save then enter 'y' or else 'n': ",s33);
gets(ch);
if(strcmp(ch,"y")==0)
{
if(N==1)
{
if( (out_fd=creat(s22, COPYMORE)) == -1 )
{
printf("ERROR OCCURE !!\n");
if (send(sockfd,"####",4, 0) == -1)
perror("send");
flag=0;
}
}
if(N==2)
{
if( (out_fd=creat(s33, COPYMORE)) == -1 )
{
printf("ERROR OCCURE !!\n");
if (send(sockfd,"####",4, 0) == -1)
perror("send");
flag=0;
}
}
if(flag==1)
{
printf("please wait some time while file is reciving...");
if (send(sockfd,"#",1, 0) == -1)
perror("send");
while(1)
{
if ((numbytes=recv(sockfd, buf,sizeof(buf), 0)) == -1)
{
perror("recv");
exit(1);
}
if( strcmp(buf,"$$$$") ==0)
{
break;
}
if( write(out_fd, buf, numbytes) != numbytes )
{
printf("ERROR OCCURE !!\n");
break;
}
if (send(sockfd,"##",2, 0) == -1)
perror("send");
}
if(N==1)
printf("\n\n%s file succesfuly recived...\n",s22);
if(N==2)
printf("\n\n%s file succesfuly recived...\n",s33);
}
flag=1;
}
else
{
if (send(sockfd,"####",4, 0) == -1)
perror("send");
if(N==1)
printf("%s file not recived...\n",s22);
if(N==2)
printf("%s file not recived...\n",s33);
}
}
else
{
printf("ERROR: %s file not present\n",s22);
}
}
}
else
{
printf("Invalid arguments !!\n");
}
}
if(strcmp(s11,"ls")==0)
{
if (send(sockfd,s,strlen(s), 0) == -1)
perror("send");
while(1)
{
if ((numbytes=recv(sockfd, buf,sizeof(buf), 0)) == -1)
{
perror("recv");
exit(1);
}
buf[numbytes] = '\0';
if( strcmp(buf,"$") !=0)
printf("%s ",buf);
else
break;
if (send(sockfd,"#",1, 0) == -1)
perror("send");
}
printf("\n");
}
if(strcmp(s11,"bye")==0)
{
if (send(sockfd,"bye",3, 0) == -1)
perror("send");
break;
}
}
else
{
printf("%s:command not found\n",s);
}
j=0;
s1=0;
s2=0;
s3=0;
}
printf("\n\n");
close(sockfd);
return 0;
}