int sys_getpath(int f, char *b, int len)
{
if(!b) return -EINVAL;
struct file *file = get_file_pointer((task_t *) current_task, f);
if(!file)
return -EBADF;
int ret = get_path_string(file->inode, b, len);
fput((task_t *)current_task, f, 0);
return ret;
}
int main(int argc, char *argv[], char *envp[])
{
int write_bytes;
char exec_file_name[STRING_MAX];
char path_str[STRING_MAX];
int flag_exit;
int exec_status;
int index;
int fd;
pid_t pid;
signal(SIGINT, SIG_IGN);
signal(SIGINT, handle_signal);
read_bytes = STRING_MAX;
fflush(stdout);
get_path_string(envp, path_str);
insert_path_str_to_search(path_str);
do {
memset(exec_file_name, 0, read_bytes);
write_bytes = write(1, MESS_BASH_WAIT_COMMAND,
sizeof(MESS_BASH_WAIT_COMMAND));
read_bytes = 1;
read_bytes = read(0, exec_file_name, STRING_MAX);
if (read_bytes != 1) {
exec_file_name[read_bytes-1] = 0;
flag_exit = strcmp(exec_file_name, COMMAND_BASH_CLOSE);
if (flag_exit)
switch (pid = fork()) {
case -1:
perror("fork");
exit(1);
case 0:
fill_argv(exec_file_name);
if (argv_child[0][0] != '/') {
fd = open(argv_child[0], O_RDONLY);
if (fd > 0) {
close(fd);
} else if (attach_path() != 0) {
printf("0 %s: %s\n",
argv_child[0],
MESS_BASH_COMMAND_MISS);
exit(1);
}
} else {
fd = open(argv_child[0], O_RDONLY);
if (fd > 0) {
close(fd);
} else {
printf("1 %s: %s\n",
argv_child[0],
MESS_BASH_COMMAND_MISS);
exit(1);
}
}
exec_status = execve(argv_child[0],
argv_child, envp);
if (exec_status < 0) {
printf("2 %s: %s\n",
argv_child[0],
MESS_BASH_COMMAND_MISS);
exit(1);
}
exit(0);
default:
wait(NULL);
}
}
} while (flag_exit);
for (index = 0; argv_child[index] != NULL; index++)
free(argv_child[index]);
for (index = 0; search_path[index] != NULL; index++)
free(search_path[index]);
write_bytes = write(1, MESS_BASH_NL, sizeof(MESS_BASH_NL));
return 0;
}