#include <linux/blkzoned.h>
+/*
+ * If the uapi headers installed on the system lacks zone capacity support,
+ * use our local versions. If the installed headers are recent enough to
+ * support zone capacity, do not redefine any structs.
+ */
+#ifndef CONFIG_HAVE_REP_CAPACITY
+#define BLK_ZONE_REP_CAPACITY (1 << 0)
+
+struct blk_zone_v2 {
+ __u64 start; /* Zone start sector */
+ __u64 len; /* Zone length in number of sectors */
+ __u64 wp; /* Zone write pointer position */
+ __u8 type; /* Zone type */
+ __u8 cond; /* Zone condition */
+ __u8 non_seq; /* Non-sequential write resources active */
+ __u8 reset; /* Reset write pointer recommended */
+ __u8 resv[4];
+ __u64 capacity; /* Zone capacity in number of sectors */
+ __u8 reserved[24];
+};
+#define blk_zone blk_zone_v2
+
+struct blk_zone_report_v2 {
+ __u64 sector;
+ __u32 nr_zones;
+ __u32 flags;
+struct blk_zone zones[0];
+};
+#define blk_zone_report blk_zone_report_v2
+#endif /* CONFIG_HAVE_REP_CAPACITY */
+
/*
* Read up to 255 characters from the first line of a file. Strip the trailing
* newline.
return strdup(line);
}
-int blkzoned_get_zoned_model(struct thread_data *td, struct fio_file *f,
- enum zbd_zoned_model *model)
+/*
+ * Get the value of a sysfs attribute for a block device.
+ *
+ * Returns NULL on failure.
+ * Returns a pointer to a string on success.
+ * The caller is responsible for freeing the memory.
+ */
+static char *blkzoned_get_sysfs_attr(const char *file_name, const char *attr)
{
- const char *file_name = f->file_name;
- char *zoned_attr_path = NULL;
- char *model_str = NULL;
+ char *attr_path = NULL;
struct stat statbuf;
char *sys_devno_path = NULL;
char *part_attr_path = NULL;
char sys_path[PATH_MAX];
ssize_t sz;
char *delim = NULL;
-
- if (f->filetype != FIO_TYPE_BLOCK) {
- *model = ZBD_IGNORE;
- return 0;
- }
-
- *model = ZBD_NONE;
+ char *attr_str = NULL;
if (stat(file_name, &statbuf) < 0)
goto out;
*delim = '\0';
}
- if (asprintf(&zoned_attr_path,
- "/sys/dev/block/%s/queue/zoned", sys_path) < 0)
+ if (asprintf(&attr_path,
+ "/sys/dev/block/%s/%s", sys_path, attr) < 0)
goto out;
- model_str = read_file(zoned_attr_path);
+ attr_str = read_file(attr_path);
+out:
+ free(attr_path);
+ free(part_str);
+ free(part_attr_path);
+ free(sys_devno_path);
+
+ return attr_str;
+}
+
+int blkzoned_get_zoned_model(struct thread_data *td, struct fio_file *f,
+ enum zbd_zoned_model *model)
+{
+ char *model_str = NULL;
+
+ if (f->filetype != FIO_TYPE_BLOCK)
+ return -EINVAL;
+
+ *model = ZBD_NONE;
+
+ model_str = blkzoned_get_sysfs_attr(f->file_name, "queue/zoned");
if (!model_str)
- goto out;
- dprint(FD_ZBD, "%s: zbd model string: %s\n", file_name, model_str);
+ return 0;
+
+ dprint(FD_ZBD, "%s: zbd model string: %s\n", f->file_name, model_str);
if (strcmp(model_str, "host-aware") == 0)
*model = ZBD_HOST_AWARE;
else if (strcmp(model_str, "host-managed") == 0)
*model = ZBD_HOST_MANAGED;
-out:
+
free(model_str);
- free(zoned_attr_path);
- free(part_str);
- free(part_attr_path);
- free(sys_devno_path);
+
+ return 0;
+}
+
+int blkzoned_get_max_open_zones(struct thread_data *td, struct fio_file *f,
+ unsigned int *max_open_zones)
+{
+ char *max_open_str;
+
+ if (f->filetype != FIO_TYPE_BLOCK)
+ return -EIO;
+
+ max_open_str = blkzoned_get_sysfs_attr(f->file_name, "queue/max_open_zones");
+ if (!max_open_str)
+ return 0;
+
+ dprint(FD_ZBD, "%s: max open zones supported by device: %s\n",
+ f->file_name, max_open_str);
+ *max_open_zones = atoll(max_open_str);
+
+ free(max_open_str);
+
return 0;
}
+static uint64_t zone_capacity(struct blk_zone_report *hdr,
+ struct blk_zone *blkz)
+{
+ if (hdr->flags & BLK_ZONE_REP_CAPACITY)
+ return blkz->capacity << 9;
+ return blkz->len << 9;
+}
+
int blkzoned_report_zones(struct thread_data *td, struct fio_file *f,
uint64_t offset, struct zbd_zone *zones,
unsigned int nr_zones)
z->start = blkz->start << 9;
z->wp = blkz->wp << 9;
z->len = blkz->len << 9;
+ z->capacity = zone_capacity(hdr, blkz);
switch (blkz->type) {
case BLK_ZONE_TYPE_CONVENTIONAL:
default:
/* Treat all these conditions as offline (don't use!) */
z->cond = ZBD_ZONE_COND_OFFLINE;
- break;
+ z->wp = z->start;
}
}
.sector = offset >> 9,
.nr_sectors = length >> 9,
};
+ int fd, ret = 0;
- if (ioctl(f->fd, BLKRESETZONE, &zr) < 0)
- return -errno;
+ /* If the file is not yet opened, open it for this function. */
+ fd = f->fd;
+ if (fd < 0) {
+ fd = open(f->file_name, O_RDWR | O_LARGEFILE);
+ if (fd < 0)
+ return -errno;
+ }
- return 0;
+ if (ioctl(fd, BLKRESETZONE, &zr) < 0)
+ ret = -errno;
+
+ if (f->fd < 0)
+ close(fd);
+
+ return ret;
}
projects / fio.git / blobdiff