On 05/31/2021 10:00 AM, Vasily Averin wrote:
The proc file is virtualized, so it contains stats for only those block
devices which are allowed by device cgroup related to the Container.
https://jira.sw.ru/browse/PSBM-90491
https://jira.sw.ru/browse/PSBM-92107
Signed-off-by: Konstantin Khorenko <[email protected]>
(cherry picked from vz7 commit ded5965d1d58deeb84509b9b490e9b6f71d0f73b)
Signed-off-by: Vasily Averin <[email protected]>
---
block/genhd.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/block/genhd.c b/block/genhd.c
index 5d4363e4296a..dd20fa3c7bb6 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -1463,6 +1463,7 @@ static const struct device_type disk_type = {
*/
static int diskstats_show(struct seq_file *seqf, void *v)
{
+ struct ve_struct *ve = get_exec_env();
struct gendisk *gp = v;
struct disk_part_iter piter;
struct hd_struct *hd;
@@ -1479,6 +1480,11 @@ static int diskstats_show(struct seq_file *seqf, void *v)
disk_part_iter_init(&piter, gp, DISK_PITER_INCL_EMPTY_PART0);
while ((hd = disk_part_iter_next(&piter))) {
+ if (!ve_is_super(ve) &&
+ (devcgroup_device_permission(S_IFBLK, part_devt(hd),
+ MAY_READ)))
+ continue;
+
inflight = part_in_flight(gp->queue, hd);
seq_printf(seqf, "%4d %7d %s "
"%lu %lu %lu %u "
@@ -1518,8 +1524,13 @@ static const struct seq_operations diskstats_op = {
static int __init proc_genhd_init(void)
{
+<<<<<<< HEAD
proc_create_seq("diskstats", 0, NULL, &diskstats_op);
proc_create_seq("partitions", S_ISVTX, NULL, &partitions_op);
+=======
+ proc_create("diskstats", S_ISVTX, NULL, &proc_diskstats_operations);
+ proc_create("partitions", S_ISVTX, NULL, &proc_partitions_operations);
+>>>>>>> ded5965d1d58... ve/proc/block: show /proc/diskstats inside a Container
^^^
return 0;
}
module_init(proc_genhd_init);
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