+// SPDX-License-Identifier: GPL-2.0
#ifndef NO_BCACHEFS_CHARDEV
#include "bcachefs.h"
#include "bcachefs_ioctl.h"
#include "buckets.h"
#include "chardev.h"
+#include "journal.h"
#include "move.h"
+#include "replicas.h"
#include "super.h"
#include "super-io.h"
#if 0
static long bch2_ioctl_start(struct bch_fs *c, struct bch_ioctl_start arg)
{
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
if (arg.flags || arg.pad)
return -EINVAL;
- return bch2_fs_start(c) ? -EIO : 0;
+ return bch2_fs_start(c);
}
static long bch2_ioctl_stop(struct bch_fs *c)
{
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
bch2_fs_stop(c);
return 0;
}
char *path;
int ret;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
if (arg.flags || arg.pad)
return -EINVAL;
{
struct bch_dev *ca;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
if ((arg.flags & ~(BCH_FORCE_IF_DATA_LOST|
BCH_FORCE_IF_METADATA_LOST|
BCH_FORCE_IF_DEGRADED|
char *path;
int ret;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
if (arg.flags || arg.pad)
return -EINVAL;
struct bch_dev *ca;
int ret;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
if ((arg.flags & ~(BCH_FORCE_IF_DATA_LOST|
BCH_FORCE_IF_METADATA_LOST|
BCH_FORCE_IF_DEGRADED|
struct bch_dev *ca;
int ret;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
if ((arg.flags & ~(BCH_FORCE_IF_DATA_LOST|
BCH_FORCE_IF_METADATA_LOST|
BCH_FORCE_IF_DEGRADED|
BCH_BY_INDEX)) ||
- arg.pad[0] || arg.pad[1] || arg.pad[2])
+ arg.pad[0] || arg.pad[1] || arg.pad[2] ||
+ arg.new_state >= BCH_MEMBER_STATE_NR)
return -EINVAL;
ca = bch2_device_lookup(c, arg.dev, arg.flags);
return PTR_ERR(ca);
ret = bch2_dev_set_state(c, ca, arg.new_state, arg.flags);
+ if (ret)
+ bch_err(c, "Error setting device state: %s", bch2_err_str(ret));
percpu_ref_put(&ca->ref);
return ret;
struct bch_ioctl_data_event e = {
.type = BCH_DATA_EVENT_PROGRESS,
.p.data_type = ctx->stats.data_type,
- .p.btree_id = ctx->stats.iter.btree_id,
- .p.pos = ctx->stats.iter.pos,
+ .p.btree_id = ctx->stats.btree_id,
+ .p.pos = ctx->stats.pos,
.p.sectors_done = atomic64_read(&ctx->stats.sectors_seen),
.p.sectors_total = bch2_fs_usage_read_short(c).used,
};
unsigned flags = O_RDONLY|O_CLOEXEC|O_NONBLOCK;
int ret, fd = -1;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
if (arg.op >= BCH_DATA_OP_NR || arg.flags)
return -EINVAL;
ctx->c = c;
ctx->arg = arg;
- ctx->thread = kthread_create(bch2_data_thread, ctx, "[bcachefs]");
+ ctx->thread = kthread_create(bch2_data_thread, ctx,
+ "bch-data/%s", c->name);
if (IS_ERR(ctx->thread)) {
ret = PTR_ERR(ctx->thread);
goto err;
return ret;
}
-static long bch2_ioctl_usage(struct bch_fs *c,
- struct bch_ioctl_usage __user *user_arg)
+static long bch2_ioctl_fs_usage(struct bch_fs *c,
+ struct bch_ioctl_fs_usage __user *user_arg)
{
- struct bch_ioctl_usage arg;
- struct bch_dev *ca;
- unsigned i, j;
- int ret;
+ struct bch_ioctl_fs_usage *arg = NULL;
+ struct bch_replicas_usage *dst_e, *dst_end;
+ struct bch_fs_usage_online *src;
+ u32 replica_entries_bytes;
+ unsigned i;
+ int ret = 0;
if (!test_bit(BCH_FS_STARTED, &c->flags))
return -EINVAL;
- if (copy_from_user(&arg, user_arg, sizeof(arg)))
+ if (get_user(replica_entries_bytes, &user_arg->replica_entries_bytes))
return -EFAULT;
- for (i = 0; i < arg.nr_devices; i++) {
- struct bch_ioctl_dev_usage dst = { .alive = 0 };
+ arg = kzalloc(sizeof(*arg) + replica_entries_bytes, GFP_KERNEL);
+ if (!arg)
+ return -ENOMEM;
- ret = copy_to_user(&user_arg->devs[i], &dst, sizeof(dst));
- if (ret)
- return ret;
+ src = bch2_fs_usage_read(c);
+ if (!src) {
+ ret = -ENOMEM;
+ goto err;
}
- {
- struct bch_fs_usage *src;
- struct bch_ioctl_fs_usage dst = {
- .capacity = c->capacity,
- };
+ arg->capacity = c->capacity;
+ arg->used = bch2_fs_sectors_used(c, src);
+ arg->online_reserved = src->online_reserved;
- src = bch2_fs_usage_read(c);
- if (!src)
- return -ENOMEM;
+ for (i = 0; i < BCH_REPLICAS_MAX; i++)
+ arg->persistent_reserved[i] = src->u.persistent_reserved[i];
- dst.used = bch2_fs_sectors_used(c, *src);
- dst.online_reserved = src->s.online_reserved;
+ dst_e = arg->replicas;
+ dst_end = (void *) arg->replicas + replica_entries_bytes;
- for (i = 0; i < BCH_REPLICAS_MAX; i++) {
- dst.persistent_reserved[i] =
- src->persistent_reserved[i];
-#if 0
- for (j = 0; j < BCH_DATA_NR; j++)
- dst.sectors[j][i] = src.replicas[i].data[j];
-#endif
+ for (i = 0; i < c->replicas.nr; i++) {
+ struct bch_replicas_entry *src_e =
+ cpu_replicas_entry(&c->replicas, i);
+
+ /* check that we have enough space for one replicas entry */
+ if (dst_e + 1 > dst_end) {
+ ret = -ERANGE;
+ break;
}
- kfree(src);
+ dst_e->sectors = src->u.replicas[i];
+ dst_e->r = *src_e;
- ret = copy_to_user(&user_arg->fs, &dst, sizeof(dst));
- if (ret)
- return ret;
+ /* recheck after setting nr_devs: */
+ if (replicas_usage_next(dst_e) > dst_end) {
+ ret = -ERANGE;
+ break;
+ }
+
+ memcpy(dst_e->r.devs, src_e->devs, src_e->nr_devs);
+
+ dst_e = replicas_usage_next(dst_e);
}
- for_each_member_device(ca, c, i) {
- struct bch_dev_usage src = bch2_dev_usage_read(c, ca);
- struct bch_ioctl_dev_usage dst = {
- .alive = 1,
- .state = ca->mi.state,
- .bucket_size = ca->mi.bucket_size,
- .nr_buckets = ca->mi.nbuckets - ca->mi.first_bucket,
- };
-
- if (ca->dev_idx >= arg.nr_devices) {
- percpu_ref_put(&ca->ref);
- return -ERANGE;
- }
+ arg->replica_entries_bytes = (void *) dst_e - (void *) arg->replicas;
- if (percpu_ref_tryget(&ca->io_ref)) {
- dst.dev = huge_encode_dev(ca->disk_sb.bdev->bd_dev);
- percpu_ref_put(&ca->io_ref);
- }
+ percpu_up_read(&c->mark_lock);
+ kfree(src);
- for (j = 0; j < BCH_DATA_NR; j++) {
- dst.buckets[j] = src.buckets[j];
- dst.sectors[j] = src.sectors[j];
- }
+ if (!ret)
+ ret = copy_to_user(user_arg, arg,
+ sizeof(*arg) + arg->replica_entries_bytes);
+err:
+ kfree(arg);
+ return ret;
+}
- ret = copy_to_user(&user_arg->devs[i], &dst, sizeof(dst));
- if (ret)
- return ret;
+static long bch2_ioctl_dev_usage(struct bch_fs *c,
+ struct bch_ioctl_dev_usage __user *user_arg)
+{
+ struct bch_ioctl_dev_usage arg;
+ struct bch_dev_usage src;
+ struct bch_dev *ca;
+ unsigned i;
+
+ if (!test_bit(BCH_FS_STARTED, &c->flags))
+ return -EINVAL;
+
+ if (copy_from_user(&arg, user_arg, sizeof(arg)))
+ return -EFAULT;
+
+ if ((arg.flags & ~BCH_BY_INDEX) ||
+ arg.pad[0] ||
+ arg.pad[1] ||
+ arg.pad[2])
+ return -EINVAL;
+
+ ca = bch2_device_lookup(c, arg.dev, arg.flags);
+ if (IS_ERR(ca))
+ return PTR_ERR(ca);
+
+ src = bch2_dev_usage_read(ca);
+
+ arg.state = ca->mi.state;
+ arg.bucket_size = ca->mi.bucket_size;
+ arg.nr_buckets = ca->mi.nbuckets - ca->mi.first_bucket;
+ arg.buckets_ec = src.buckets_ec;
+
+ for (i = 0; i < BCH_DATA_NR; i++) {
+ arg.d[i].buckets = src.d[i].buckets;
+ arg.d[i].sectors = src.d[i].sectors;
+ arg.d[i].fragmented = src.d[i].fragmented;
}
- return 0;
+ percpu_ref_put(&ca->ref);
+
+ return copy_to_user(user_arg, &arg, sizeof(arg));
}
static long bch2_ioctl_read_super(struct bch_fs *c,
struct bch_sb *sb;
int ret = 0;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
if ((arg.flags & ~(BCH_BY_INDEX|BCH_READ_DEV)) ||
arg.pad)
return -EINVAL;
ret = copy_to_user((void __user *)(unsigned long)arg.sb,
sb, vstruct_bytes(sb));
err:
- if (ca)
+ if (!IS_ERR_OR_NULL(ca))
percpu_ref_put(&ca->ref);
mutex_unlock(&c->sb_lock);
return ret;
struct bch_dev *ca;
unsigned i;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ if (!dev)
+ return -EINVAL;
+
for_each_online_member(ca, c, i)
- if (ca->disk_sb.bdev->bd_dev == dev) {
+ if (ca->dev == dev) {
percpu_ref_put(&ca->io_ref);
return i;
}
- return -ENOENT;
+ return -BCH_ERR_ENOENT_dev_idx_not_found;
}
static long bch2_ioctl_disk_resize(struct bch_fs *c,
struct bch_dev *ca;
int ret;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
if ((arg.flags & ~BCH_BY_INDEX) ||
arg.pad)
return -EINVAL;
return ret;
}
+static long bch2_ioctl_disk_resize_journal(struct bch_fs *c,
+ struct bch_ioctl_disk_resize_journal arg)
+{
+ struct bch_dev *ca;
+ int ret;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ if ((arg.flags & ~BCH_BY_INDEX) ||
+ arg.pad)
+ return -EINVAL;
+
+ ca = bch2_device_lookup(c, arg.dev, arg.flags);
+ if (IS_ERR(ca))
+ return PTR_ERR(ca);
+
+ ret = bch2_set_nr_journal_buckets(c, ca, arg.nbuckets);
+
+ percpu_ref_put(&ca->ref);
+ return ret;
+}
+
#define BCH_IOCTL(_name, _argtype) \
do { \
_argtype i; \
\
if (copy_from_user(&i, arg, sizeof(i))) \
return -EFAULT; \
- return bch2_ioctl_##_name(c, i); \
+ ret = bch2_ioctl_##_name(c, i); \
+ goto out; \
} while (0)
long bch2_fs_ioctl(struct bch_fs *c, unsigned cmd, void __user *arg)
{
- /* ioctls that don't require admin cap: */
+ long ret;
+
switch (cmd) {
case BCH_IOCTL_QUERY_UUID:
return bch2_ioctl_query_uuid(c, arg);
- case BCH_IOCTL_USAGE:
- return bch2_ioctl_usage(c, arg);
- }
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- switch (cmd) {
+ case BCH_IOCTL_FS_USAGE:
+ return bch2_ioctl_fs_usage(c, arg);
+ case BCH_IOCTL_DEV_USAGE:
+ return bch2_ioctl_dev_usage(c, arg);
#if 0
case BCH_IOCTL_START:
BCH_IOCTL(start, struct bch_ioctl_start);
if (!test_bit(BCH_FS_STARTED, &c->flags))
return -EINVAL;
- /* ioctls that do require admin cap: */
switch (cmd) {
case BCH_IOCTL_DISK_ADD:
BCH_IOCTL(disk_add, struct bch_ioctl_disk);
BCH_IOCTL(data, struct bch_ioctl_data);
case BCH_IOCTL_DISK_RESIZE:
BCH_IOCTL(disk_resize, struct bch_ioctl_disk_resize);
+ case BCH_IOCTL_DISK_RESIZE_JOURNAL:
+ BCH_IOCTL(disk_resize_journal, struct bch_ioctl_disk_resize_journal);
default:
return -ENOTTY;
}
+out:
+ if (ret < 0)
+ ret = bch2_err_class(ret);
+ return ret;
}
static DEFINE_IDR(bch_chardev_minor);
projects / bcachefs-tools-debian / blobdiff