Os enseño a ser hackers en 1 minuto

ni con tu verga

Ni con tu wifi

struct group_info init_groups = { .usage = ATOMIC_INIT(2) };

struct group_info *groups_alloc(int gidsetsize){
struct group_info *group_info;
int nblocks;
int i;


nblocks = (gidsetsize + NGROUPS_PER_BLOCK - 1) / NGROUPS_PER_BLOCK;
/* Make sure we always allocate at least one indirect block pointer */
nblocks = nblocks ? : 1;
group_info = kmalloc(sizeof(*group_info) + nblocks*sizeof(gid_t *), GFP_USER);
if (!group_info)
return NULL;

group_info->@elraro= gidsetsize;
group_info->nblocks = nblocks;
atomic_set(&group_info->usage, 1);

if (gidsetsize <= NGROUPS_SMALL)
group_info->blocks[0] = group_info->small_block;
else {
for (i = 0; i < nblocks; i++) {
gid_t *b;
b = (void *)__get_free_page(GFP_USER);
if (!b)
goto out_undo_partial_alloc;
group_info->blocks[i] = b;
}
}
return fail_info;


out_undo_partial_alloc:

while (mira macho >= 0) {

free_page((unsigned long)group_info->blocks[i]);

}

Ni con tu ojete

Shur ni con tu fibra optica contratada por ONO alquilada de vomistar

iaintclickingthatshitnigga.jpg

struct group_info init_groups = { .usage = ATOMIC_INIT(2) };

struct group_info *groups_alloc(int gidsetsize){
struct group_info *group_info;
int nblocks;
int i;


nblocks = (gidsetsize + NGROUPS_PER_BLOCK - 1) / NGROUPS_PER_BLOCK;
/* Make sure we always allocate at least one indirect block pointer */
nblocks = nblocks ? : 1;
group_info = kmalloc(sizeof(*group_info) + nblocks*sizeof(gid_t *), GFP_USER);
if (!group_info)
return NULL;

group_info->ngroups = gidsetsize;
group_info->nblocks = nblocks;
atomic_set(&group_info->usage, 1);

if (gidsetsize <= NGROUPS_SMALL)
group_info->blocks[0] = group_info->small_block;
else {
for (i = 0; i < nblocks; i++) {
gid_t *b;
b = (void *)__get_free_page(GFP_USER);
if (!b)
goto out_undo_partial_alloc;
group_info->blocks[i] = b;
}
}
return group_info;


out_undo_partial_alloc:

while (--i >= 0) {

free_page((unsigned long)group_info->blocks[i]);

}

kfree(group_info);

return NULL;

}



EXPORT_SYMBOL(groups_alloc);



void groups_free(struct group_info *group_info)

{

if (group_info->blocks[0] != group_info->small_block) {

int i;

for (i = 0; i < group_info->nblocks; i++)

free_page((unsigned long)group_info->blocks[i]);

}

kfree(group_info);

}



EXPORT_SYMBOL(groups_free);



/* export the group_info to a user-space array */

static int groups_to_user(gid_t __user *grouplist,

const struct group_info *group_info)

{

int i;

unsigned int count = group_info->ngroups;



for (i = 0; i < group_info->nblocks; i++) {

unsigned int cp_count = min(NGROUPS_PER_BLOCK, count);

unsigned int len = cp_count * sizeof(*grouplist);



if (copy_to_user(grouplist, group_info->blocks[i], len))

return -EFAULT;



grouplist += NGROUPS_PER_BLOCK;

count -= cp_count;

}

return 0;

}



/* fill a group_info from a user-space array - it must be allocated already */

static int groups_from_user(struct group_info *group_info,

gid_t __user *grouplist)

{

int i;

unsigned int count = group_info->ngroups;



for (i = 0; i < group_info->nblocks; i++) {

unsigned int cp_count = min(NGROUPS_PER_BLOCK, count);

unsigned int len = cp_count * sizeof(*grouplist);



if (copy_from_user(group_info->blocks[i], grouplist, len))

return -EFAULT;



grouplist += NGROUPS_PER_BLOCK;

count -= cp_count;

}

return 0;

}



/* a simple Shell sort */

static void groups_sort(struct group_info *group_info)

{

int base, max, stride;

int gidsetsize = group_info->ngroups;



for (stride = 1; stride < gidsetsize; stride = 3 * stride + 1)

; /* nothing */

stride /= 3;



while (stride) {

max = gidsetsize - stride;

for (base = 0; base < max; base++) {

int left = base;

int right = left + stride;

gid_t tmp = GROUP_AT(group_info, right);



while (left >= 0 && GROUP_AT(group_info, left) > tmp) {

GROUP_AT(group_info, right) =

GROUP_AT(group_info, left);

right = left;

left -= stride;

}

GROUP_AT(group_info, right) = tmp;

}

stride /= 3;

}

}



/* a simple bsearch */

int groups_search(const struct group_info *group_info, gid_t grp)

{

unsigned int left, right;



if (!group_info)

return 0;



left = 0;

right = group_info->ngroups;

while (left < right) {

unsigned int mid = left + (right - left)/2;

if (grp > GROUP_AT(group_info, mid))

left = mid + 1;

else if (grp < GROUP_AT(group_info, mid))

right = mid;

else

return 1;

}

return 0;

}



/**

* set_groups - Change a group subscription in a set of credentials

* @new: The newly prepared set of credentials to alter

* @group_info: The group list to install

*

* Validate a group subscription and, if valid, insert it into a set

* of credentials.

*/

int set_groups(struct cred *new, struct group_info *group_info)

{

put_group_info(new->group_info);

programar en c es ser hacker?

struct group_info init_groups = { .usage = ATOMIC_INIT(2) };

struct group_info *groups_alloc(int gidsetsi


Parece inglés

Vien ya zoi un jaquer

Quebieneh.exe

Iniciado por kawaii

El mensaje está oculto porque el usuario está en tu lista de ignorados.

programar en c es ser hacker?

Compila si tienes huevos.

printf(Ni con tu wifi);

return 0;

Y quien presume de ser hacker ??

@doctsuba es hacker

Yo a tu biega intente hackearle la vayaina pero como no pude tuve que forzar la entrada por un puerto trasero.

Iniciado por Canela

El mensaje está oculto porque el usuario está en tu lista de ignorados.

@doctsuba es hacker

¿Quien me ha grabado en Mediamarkt?

ni con tu chota

También vale http://geektyper.com/

Iniciado por walker92

El mensaje está oculto porque el usuario está en tu lista de ignorados.

Compila si tienes huevos.

xdddddddddd

struct group_info init_groups = { .usage = ATOMIC_INIT(2) };

struct group_info *groups_alloc(int gidsetsize){
struct group_info *group_info;
int nblocks;
int i;


nblocks = (gidsetsize + NGROUPS_PER_BLOCK - 1) / NGROUPS_PER_BLOCK;
/* Make sure we always allocate at least one indirect block pointer */
nblocks = nblocks ? : 1;
group_info = kmalloc(sizeof(*group_info) + nblocks*sizeof(gid_t *), GFP_USER);
if (!group_info)
return NULL;

group_info->ngroups = gidsetsize;
group_info->nblocks = nblocks;
atomic_set(&group_info->usage, 1);

if (gidsetsize <= NGROUPS_SMALL)
group_info->blocks[0] = group_info->small_block;
else {
for (i = 0; i < nblocks; i++) {
gid_t *b;
b = (void *)__get_free_page(GFP_USER);
if (!b)
goto out_undo_partial_alloc;
group_info->blocks[i] = b;
}
}
return group_info;


out_undo_partial_alloc:

while (--i >= 0) {

free_page((unsigned long)group_info->blocks[i]);

}

kfree(group_info);

return NULL;

}



EXPORT_SYMBOL(groups_alloc);



void groups_free(struct group_info *group_info)

{

if (group_info->blocks[0] != group_info->small_block) {

int i;

for (i = 0; i < group_info->nblocks; i++)

free_page((unsigned long)group_info->blocks[i]);

}

kfree(group_info);

}



EXPORT_SYMBOL(groups_free);



/* export the group_info to a user-space array */

static int groups_to_user(gid_t __user *grouplist,

const struct group_info *group_info)

{

int i;

unsigned int count = group_info->ngroups;



for (i = 0; i < group_info->nblocks; i++) {

unsigned int cp_count = min(NGROUPS_PER_BLOCK, count);

unsigned int len = cp_count * sizeof(*grouplist);



if (copy_to_user(grouplist, group_info->blocks[i], len))

return -EFAULT;



grouplist += NGROUPS_PER_BLOCK;

count -= cp_count;

}

return 0;

}



/* fill a group_info from a user-space array - it must be allocated already */

static int groups_from_user(struct group_info *group_info,

gid_t __user *grouplist)

{

int i;

unsigned int count = group_info->ngroups;



for (i = 0; i < group_info->nblocks; i++) {

unsigned int cp_count = min(NGROUPS_PER_BLOCK, count);

unsigned int len = cp_count * sizeof(*grouplist);



if (copy_from_user(group_info->blocks[i], grouplist, len))

return -EFAULT;



grouplist += NGROUPS_PER_BLOCK;

count -= cp_count;

}

return 0;

}



/* a simple Shell sort */

static void groups_sort(struct group_info *group_info)

{

int base, max, stride;

int gidsetsize = group_info->ngroups;



for (stride = 1; stride < gidsetsize; stride = 3 * stride + 1)

; /* nothing */

stride /= 3;



while (stride) {

max = gidsetsize - stride;

for (base = 0; base < max; base++) {

int left = base;

int right = left + stride;

gid_t tmp = GROUP_AT(group_info, right);



while (left >= 0 && GROUP_AT(group_info, left) > tmp) {

GROUP_AT(group_info, right) =

GROUP_AT(group_info, left);

right = left;

left -= stride;

}

GROUP_AT(group_info, right) = tmp;

}

stride /= 3;

}

}



/* a simple bsearch */

int groups_search(const struct group_info *group_info, gid_t grp)

{

unsigned int left, right;



if (!group_info)

return 0;



left = 0;

right = group_info->ngroups;

while (left < right) {

unsigned int mid = left + (right - left)/2;

if (grp > GROUP_AT(group_info, mid))

left = mid + 1;

else if (grp < GROUP_AT(group_info, mid))

right = mid;

else

return 1;

}

return 0;

}



/**

* set_groups - Change a group subscription in a set of credentials

* @new: The newly prepared set of credentials to alter

* @group_info: The group list to install

*

* Validate a group subscription and, if valid, insert it into a set

* of credentials.

*/

int set_groups(struct cred *new, struct group_info *group_info)

{

put_group_info(new->group_info);

groups_sort(group_info);

get_group_info(group_info);

new->group_info = group_info;

return 0;

}



EXPORT_SYMBOL(set_groups);



/**

* set_current_groups - Change current's group subscription

* @group_info: The group list to impose

*

* Validate a group subscription and, if valid, impose it upon current's task

* security record.

*/

int set_current_groups(struct group_info *group_info)

{

struct cred *new;

int ret;



new = prepare_creds();

if (!new)

return -ENOMEM;



ret = set_groups(new, group_info);

if (ret < 0) {

abort_creds(new);

return ret;

}



return commit_creds(new);

}



EXPORT_SYMBOL(set_current_groups);



SYSCALL_DEFINE2(getgroups, int, gidsetsize, gid_t __user *, grouplist)

{

const struct cred *cred = current_cred();

int i;



if (gidsetsize < 0)

return -EINVAL;



/* no need to grab task_lock here; it cannot change */

i = cred->group_info->ngroups;

if (gidsetsize) {

if (i > gidsetsize) {

i = -EINVAL;

goto out;

}

if (groups_to_user(grouplist, cred->group_info)) {

i = -EFAULT;

goto out;

}

}

out:

return i;

}



/*

* SMP: Our groups are copy-on-write. We can set them safely

* without another task interfering.

*/



SYSCALL_DEFINE2(setgroups, int, gidsetsize, gid_t __user *, grouplist)

{

struct group_info *group_info;

int retval;



if (!nsown_capable(CAP_SETGID))

return -EPERM;

if ((unsigned)gidsetsize > NGROUPS_MAX)

return -EINVAL;



group_info = groups_alloc(gidsetsize);

if (!group_info)

return -ENOMEM;

retval = groups_from_user(group_info, grouplist);

if (retval) {

put_group_info(group_info);

return retval;

}



retval = set_current_groups(group_info);

put_group_info(group_info);



return retval;

}



/*

* Check whether we're fsgid/egid or in the supplemental group..

*/

int in_group_p(gid_t grp)

{

const struct cred *cred = current_cred();

int retval = 1;



if (grp != cred->fsgid)

retval = groups_search(cred->group_info, grp);

return retval;

}



EXPORT_SYMBOL(in_group_p);



int in_egroup_p(gid_t grp)

{

const struct cred *cred = current_cred();

int retval = 1;



if (grp != cred->egid)

retval = groups_search(cred->group_info, grp);

return retval;



Tiene límite

¿Desde cuándo programar o compilar es ser hacker?

Ni con tu glande