int read_tarfs_file(char * fileName, char *binary_tarfs_start,
char* binary_tarfs_end)
{
//printk("Indisde : %s",fileName);
int found_file = 0;
struct posix_header_ustar *tar_p =
(struct posix_header_ustar *) (binary_tarfs_start);
// print_posix_header(tar_p);
//printk("\n Binary Start %x", binary_tarfs_start);
// printk("\n Binary End %x", binary_tarfs_end);
char *temp = binary_tarfs_start;
// int size = octal_decimal(atoi(tar_p->size));
while (temp < binary_tarfs_end)
{
if (matchString(tar_p->name, fileName) == 0)
{
found_file = 1;
return found_file;
}
int size = octal_decimal(atoi(tar_p->size));
int padding = 0;
if (size % 512 != 0)
{
padding = 512 - size % 512;
}
temp = temp + 512 + size + padding;
tar_p = (struct posix_header_ustar *) temp;
// print_posix_header(tar_p);
// printk("\n temp : %x",temp);
}
return found_file;
}
/**
* call-seq:
* hdfs.chgrp(path, mode=644) -> retval
*
* Changes the mode of the supplied path. Returns True if successful; raises
* a DFSException if this fails.
*/
VALUE HDFS_File_System_chmod(int argc, VALUE* argv, VALUE self) {
FSData* data = get_FSData(self);
VALUE path, mode;
rb_scan_args(argc, argv, "11", &path, &mode);
// Sets default mode if none is supplied.
short hdfs_mode = NIL_P(mode) ? HDFS_DEFAULT_MODE :
octal_decimal(NUM2INT(mode));
if (hdfsChmod(data->fs, StringValuePtr(path), hdfs_mode) == -1) {
rb_raise(e_dfs_exception, "Failed to chmod path %s to mode %d: %s",
StringValuePtr(path), decimal_octal(hdfs_mode), get_error(errno));
return Qnil;
}
return Qtrue;
}
/*
Code Reference : My Previous Submission
*/
int get_elf_file(char *binary_tarfs_start, char * filename,
char* binary_tarfs_end)
{
int found_file = 0;
struct posix_header_ustar *tar_p =
(struct posix_header_ustar *) (binary_tarfs_start);
// print_posix_header(tar_p);
// printk("\n Binary Start %x", binary_tarfs_start);
//printk("\n Binary End %x", binary_tarfs_end);
char *temp = binary_tarfs_start;
// int size = octal_decimal(atoi(tar_p->size));
while (temp < binary_tarfs_end)
{
if (matchString(tar_p->name, filename) == 0)
{
found_file = 1;
break;
// return found_file;
}
int size = octal_decimal(atoi(tar_p->size));
int padding = 0;
if (size % 512 != 0)
{
padding = 512 - size % 512;
}
temp = temp + 512 + size + padding;
tar_p = (struct posix_header_ustar *) temp;
print_posix_header(tar_p);
// printk("\n temp : %x",temp);
}
if (found_file == 0)
{
return 0;
}
else
{
temp = temp + 512;
}
// printk("\n size : %d",atoi(tar_p->size) );
// printk("\n Header:");
elf_start = (uint64_t) temp;
// printk("\n temp: %x",temp);
parse_ELF(temp, atoi(tar_p->size), &exeFormat, &pdr);
//printk("\n exe format :%d", Parse_ELF_Executable(temp, atoi(tar_p->size),&exeFormat,&pdr));
return 1;
}
uint64_t get_next_pointer(uint64_t previous)
{
struct posix_header_ustar *tar_p = (struct posix_header_ustar *) previous;
char *temp = (char*) previous;
// print_posix_header(tar_p);
int size = octal_decimal(atoi(tar_p->size));
int padding = 0;
if (size % 512 != 0)
{
padding = 512 - size % 512;
}
temp = temp + 512 + size + padding;
struct posix_header_ustar *next = (struct posix_header_ustar *) temp;
// char *next_f = (char *) next->name;
// print_posix_header(next);
return ((uint64_t) next);
}
/*
Code Reference : My Previous Submission
*/
int get_next_file(uint64_t previous, uint64_t base)
{
struct posix_header_ustar *start = (struct posix_header_ustar *) base;
//print_posix_header(start);
char *start_f = (char *) start->name;
char *temp_start_f = (char *) start->name;
char *temp = (char*) previous;
struct posix_header_ustar *tar_p = (struct posix_header_ustar *) previous;
char *previous_f = (char *) tar_p->name;
print_posix_header(tar_p);
int size = octal_decimal(atoi(tar_p->size));
int padding = 0;
if (size % 512 != 0)
{
padding = 512 - size % 512;
}
temp = temp + 512 + size + padding;
struct posix_header_ustar *next = (struct posix_header_ustar *) temp;
char *next_f = (char *) next->name;
if (contains(next_f, start_f))
{
while (*next_f == *start_f)
{
next_f++;
start_f++;
}
// printk("\n %s \n", next_f);
char next_file_name[50] = { 0 };
int i = 0;
while (*next_f != '\0')
{
if (*next_f == '/')
{
break;
}
next_file_name[i] = *next_f;
next_f++;
i++;
}
next_file_name[i] = '\0';
// printk("%s",next_file_name);
// printk("\n %s ", temp_start_f);
if (matchString(previous_f, temp_start_f) == 0)
{
// printk("\n Matced");
return 3;
}
while (*previous_f == *temp_start_f)
{
previous_f++;
temp_start_f++;
}
// printk("\n sss: %s ", previous_f);
char previous_file_name[50] = { 0 };
i = 0;
while (*previous_f != '\0')
{
if (*previous_f == '/')
{
break;
}
previous_file_name[i] = *previous_f;
previous_f++;
i++;
}
previous_file_name[i] = '\0';
// printk(" %s",previous_file_name);
if (matchString(previous_file_name, next_file_name) == 0)
{
// printk("\n Matced");
return 2;
}
else
{
// printk("\n Didinot match");
return 3;
}
// return 1;
}
else
{
return 1;
}
return 0;
}
