To prepare for write pointer consistency check by fsck, add
f2fs_report_zone() helper function which calls REPORT ZONE command to
get write pointer status of a single zone. The function is added to
lib/libf2fs_zoned which gathers zoned block device related functions.
Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawas...@wdc.com>
---
include/f2fs_fs.h | 1 +
lib/libf2fs_zoned.c | 33 +++++++++++++++++++++++++++++++++
2 files changed, 34 insertions(+)
diff --git a/include/f2fs_fs.h b/include/f2fs_fs.h
index a437379..1f7ef05 100644
--- a/include/f2fs_fs.h
+++ b/include/f2fs_fs.h
@@ -1299,6 +1299,7 @@ blk_zone_cond_str(struct blk_zone *blkz)
extern int f2fs_get_zoned_model(int);
extern int f2fs_get_zone_blocks(int);
+extern int f2fs_report_zone(int, u_int64_t, void *);
typedef int (report_zones_cb_t)(int i, void *, void *);
extern int f2fs_report_zones(int, report_zones_cb_t *, void *);
extern int f2fs_check_zones(int);
diff --git a/lib/libf2fs_zoned.c b/lib/libf2fs_zoned.c
index 669d47e..10d6d0b 100644
--- a/lib/libf2fs_zoned.c
+++ b/lib/libf2fs_zoned.c
@@ -191,6 +191,33 @@ int f2fs_get_zone_blocks(int i)
return 0;
}
+int f2fs_report_zone(int i, u_int64_t sector, void *blkzone)
+{
+ struct blk_zone *blkz = (struct blk_zone *)blkzone;
+ struct blk_zone_report *rep;
+ int ret = -1;
+
+ rep = malloc(sizeof(struct blk_zone_report) + sizeof(struct blk_zone));
+ if (!rep) {
+ ERR_MSG("No memory for report zones\n");
+ return -ENOMEM;
+ }
+
+ rep->sector = sector;
+ rep->nr_zones = 1;
+ ret = ioctl(c.devices[i].fd, BLKREPORTZONE, rep);
+ if (ret != 0) {
+ ret = -errno;
+ ERR_MSG("ioctl BLKREPORTZONE failed: errno=%d\n", errno);
+ goto out;
+ }
+
+ *blkz = *(struct blk_zone *)(rep + 1);
+out:
+ free(rep);
+ return ret;
+}
+
#define F2FS_REPORT_ZONES_BUFSZ 524288
int f2fs_report_zones(int j, report_zones_cb_t *report_zones_cb, void *opaque)
@@ -425,6 +452,12 @@ out:
#else
+int f2fs_report_zone(int i, u_int64_t sector, void *blkzone)
+{
+ ERR_MSG("%d: Zoned block devices are not supported\n", i);
+ return -1;
+}
+
int f2fs_report_zones(int i, report_zones_cb_t *report_zones_cb, void *opaque)
{
ERR_MSG("%d: Zoned block devices are not supported\n", i);
--
2.21.0
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