static int proc_keys_show(struct seq_file *m, void *v)
{
const struct cred *cred = current_cred();
struct rb_node *_p = v;
struct key *key = rb_entry(_p, struct key, serial_node);
struct timespec now;
unsigned long timo;
key_ref_t key_ref, skey_ref;
char xbuf[12];
int rc;
key_ref = make_key_ref(key, 0);
/* determine if the key is possessed by this process (a test we can
* skip if the key does not indicate the possessor can view it
*/
if (key->perm & KEY_POS_VIEW) {
skey_ref = search_my_process_keyrings(key->type, key,
lookup_user_key_possessed,
true, cred);
if (!IS_ERR(skey_ref)) {
key_ref_put(skey_ref);
key_ref = make_key_ref(key, 1);
}
}
/* check whether the current task is allowed to view the key (assuming
* non-possession)
* - the caller holds a spinlock, and thus the RCU read lock, making our
* access to __current_cred() safe
*/
rc = key_task_permission(key_ref, cred, KEY_VIEW);
if (rc < 0)
return 0;
now = current_kernel_time();
rcu_read_lock();
/* come up with a suitable timeout value */
if (key->expiry == 0) {
memcpy(xbuf, "perm", 5);
} else if (now.tv_sec >= key->expiry) {
memcpy(xbuf, "expd", 5);
} else {
timo = key->expiry - now.tv_sec;
if (timo < 60)
sprintf(xbuf, "%lus", timo);
else if (timo < 60*60)
sprintf(xbuf, "%lum", timo / 60);
else if (timo < 60*60*24)
sprintf(xbuf, "%luh", timo / (60*60));
else if (timo < 60*60*24*7)
sprintf(xbuf, "%lud", timo / (60*60*24));
else
sprintf(xbuf, "%luw", timo / (60*60*24*7));
}
#define showflag(KEY, LETTER, FLAG) \
(test_bit(FLAG, &(KEY)->flags) ? LETTER : '-')
seq_printf(m, "%08x %c%c%c%c%c%c %5d %4s %08x %5d %5d %-9.9s ",
key->serial,
showflag(key, 'I', KEY_FLAG_INSTANTIATED),
showflag(key, 'R', KEY_FLAG_REVOKED),
showflag(key, 'D', KEY_FLAG_DEAD),
showflag(key, 'Q', KEY_FLAG_IN_QUOTA),
showflag(key, 'U', KEY_FLAG_USER_CONSTRUCT),
showflag(key, 'N', KEY_FLAG_NEGATIVE),
atomic_read(&key->usage),
xbuf,
key->perm,
key->uid,
key->gid,
key->type->name);
#undef showflag
if (key->type->describe)
key->type->describe(key, m);
seq_putc(m, '\n');
rcu_read_unlock();
return 0;
}
static int proc_keys_show(struct seq_file *m, void *v)
{
struct rb_node *_p = v;
struct key *key = rb_entry(_p, struct key, serial_node);
struct timespec now;
unsigned long timo;
char xbuf[12];
int rc;
/* check whether the current task is allowed to view the key (assuming
* non-possession) */
rc = key_task_permission(make_key_ref(key, 0), current, KEY_VIEW);
if (rc < 0)
return 0;
now = current_kernel_time();
rcu_read_lock();
/* come up with a suitable timeout value */
if (key->expiry == 0) {
memcpy(xbuf, "perm", 5);
}
else if (now.tv_sec >= key->expiry) {
memcpy(xbuf, "expd", 5);
}
else {
timo = key->expiry - now.tv_sec;
if (timo < 60)
sprintf(xbuf, "%lus", timo);
else if (timo < 60*60)
sprintf(xbuf, "%lum", timo / 60);
else if (timo < 60*60*24)
sprintf(xbuf, "%luh", timo / (60*60));
else if (timo < 60*60*24*7)
sprintf(xbuf, "%lud", timo / (60*60*24));
else
sprintf(xbuf, "%luw", timo / (60*60*24*7));
}
#define showflag(KEY, LETTER, FLAG) \
(test_bit(FLAG, &(KEY)->flags) ? LETTER : '-')
seq_printf(m, "%08x %c%c%c%c%c%c %5d %4s %08x %5d %5d %-9.9s ",
key->serial,
showflag(key, 'I', KEY_FLAG_INSTANTIATED),
showflag(key, 'R', KEY_FLAG_REVOKED),
showflag(key, 'D', KEY_FLAG_DEAD),
showflag(key, 'Q', KEY_FLAG_IN_QUOTA),
showflag(key, 'U', KEY_FLAG_USER_CONSTRUCT),
showflag(key, 'N', KEY_FLAG_NEGATIVE),
atomic_read(&key->usage),
xbuf,
key->perm,
key->uid,
key->gid,
key->type->name);
#undef showflag
if (key->type->describe)
key->type->describe(key, m);
seq_putc(m, '\n');
rcu_read_unlock();
return 0;
}
static int proc_keys_show(struct seq_file *m, void *v)
{
const struct cred *cred = current_cred();
struct rb_node *_p = v;
struct key *key = rb_entry(_p, struct key, serial_node);
struct timespec now;
unsigned long timo;
key_ref_t key_ref, skey_ref;
char xbuf[12];
int rc;
key_ref = make_key_ref(key, 0);
/*
*/
if (key->perm & KEY_POS_VIEW) {
skey_ref = search_my_process_keyrings(key->type, key,
lookup_user_key_possessed,
true, cred);
if (!IS_ERR(skey_ref)) {
key_ref_put(skey_ref);
key_ref = make_key_ref(key, 1);
}
}
/*
*/
rc = key_task_permission(key_ref, cred, KEY_VIEW);
if (rc < 0)
return 0;
now = current_kernel_time();
rcu_read_lock();
/* */
if (key->expiry == 0) {
memcpy(xbuf, "perm", 5);
} else if (now.tv_sec >= key->expiry) {
memcpy(xbuf, "expd", 5);
} else {
timo = key->expiry - now.tv_sec;
if (timo < 60)
sprintf(xbuf, "%lus", timo);
else if (timo < 60*60)
sprintf(xbuf, "%lum", timo / 60);
else if (timo < 60*60*24)
sprintf(xbuf, "%luh", timo / (60*60));
else if (timo < 60*60*24*7)
sprintf(xbuf, "%lud", timo / (60*60*24));
else
sprintf(xbuf, "%luw", timo / (60*60*24*7));
}
#define showflag(KEY, LETTER, FLAG) \
(test_bit(FLAG, &(KEY)->flags) ? LETTER : '-')
seq_printf(m, "%08x %c%c%c%c%c%c %5d %4s %08x %5d %5d %-9.9s ",
key->serial,
showflag(key, 'I', KEY_FLAG_INSTANTIATED),
showflag(key, 'R', KEY_FLAG_REVOKED),
showflag(key, 'D', KEY_FLAG_DEAD),
showflag(key, 'Q', KEY_FLAG_IN_QUOTA),
showflag(key, 'U', KEY_FLAG_USER_CONSTRUCT),
showflag(key, 'N', KEY_FLAG_NEGATIVE),
atomic_read(&key->usage),
xbuf,
key->perm,
key->uid,
key->gid,
key->type->name);
#undef showflag
if (key->type->describe)
key->type->describe(key, m);
seq_putc(m, '\n');
rcu_read_unlock();
return 0;
}