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ima: Introduce _ima_measurements_start() and _ima_measurements_next()

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Introduce _ima_measurements_start() and _ima_measurements_next(), renamed
from ima_measurements_start() and ima_measurements_next(), to include the
list head as an additional parameter, so that iteration on different lists
can be implemented by calling those functions.

No functional change: ima_measurements_start() and ima_measurements_next()
pass the ima_measurements list head, used before. They become wrappers for
the new functions.

Link: https://github.com/linux-integrity/linux/issues/1
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
This commit is contained in:
Roberto Sassu 2026-06-05 19:22:29 +02:00 committed by Mimi Zohar
parent 8f19da70f7
commit cb431ff6a9
1 changed files with 16 additions and 4 deletions
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20
security/integrity/ima/ima_fs.c
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@ -72,14 +72,15 @@ static const struct file_operations ima_measurements_count_ops = {
};
/* returns pointer to hlist_node */
static void *ima_measurements_start(struct seq_file *m, loff_t *pos)
static void *_ima_measurements_start(struct seq_file *m, loff_t *pos,
struct list_head *head)
{
loff_t l = *pos;
struct ima_queue_entry *qe;
/* we need a lock since pos could point beyond last element */
rcu_read_lock();
list_for_each_entry_rcu(qe, &ima_measurements, later) {
list_for_each_entry_rcu(qe, head, later) {
if (!l--) {
rcu_read_unlock();
return qe;
@ -89,7 +90,13 @@ static void *ima_measurements_start(struct seq_file *m, loff_t *pos)
return NULL;
}
static void *ima_measurements_next(struct seq_file *m, void *v, loff_t *pos)
static void *ima_measurements_start(struct seq_file *m, loff_t *pos)
{
return _ima_measurements_start(m, pos, &ima_measurements);
}
static void *_ima_measurements_next(struct seq_file *m, void *v, loff_t *pos,
struct list_head *head)
{
struct ima_queue_entry *qe = v;
@ -101,7 +108,12 @@ static void *ima_measurements_next(struct seq_file *m, void *v, loff_t *pos)
rcu_read_unlock();
(*pos)++;
return (&qe->later == &ima_measurements) ? NULL : qe;
return (&qe->later == head) ? NULL : qe;
}
static void *ima_measurements_next(struct seq_file *m, void *v, loff_t *pos)
{
return _ima_measurements_next(m, v, pos, &ima_measurements);
}
static void ima_measurements_stop(struct seq_file *m, void *v)