/*
- * scsi generic sg v3 io engine
+ * sg engine
+ *
+ * IO engine that uses the Linux SG v3 interface to talk to SCSI devices
*
*/
#include <stdio.h>
#include <sys/poll.h>
#include "../fio.h"
-#include "../os.h"
#ifdef FIO_HAVE_SGIO
return 0;
}
-static int fio_sgio_getevents(struct thread_data *td, int min, int max,
- struct timespec fio_unused *t)
+static int fio_sgio_getevents(struct thread_data *td, unsigned int min,
+ unsigned int max, struct timespec fio_unused *t)
{
- /*
- * normally hard coding &td->files[0] is a bug that needs to be fixed,
- * but it's ok here as all files should point to the same device.
- */
- struct fio_file *f = &td->files[0];
struct sgio_data *sd = td->io_ops->data;
int left = max, ret, r = 0;
void *buf = sd->sgbuf;
unsigned int i, events;
+ struct fio_file *f;
/*
* Fill in the file descriptors
if (!min)
break;
- ret = poll(sd->pfds, td->nr_files, -1);
+ ret = poll(sd->pfds, td->o.nr_files, -1);
if (ret < 0) {
if (!r)
r = -errno;
} else if (!ret)
continue;
- if (pollin_events(sd->pfds, td->nr_files))
+ if (pollin_events(sd->pfds, td->o.nr_files))
break;
} while (1);
ret = ioctl(f->fd, SG_IO, hdr);
if (ret < 0)
- return -errno;
+ return ret;
return FIO_Q_COMPLETED;
}
-static int fio_sgio_rw_doio(struct fio_file *f, struct io_u *io_u, int sync)
+static int fio_sgio_rw_doio(struct fio_file *f, struct io_u *io_u, int do_sync)
{
struct sg_io_hdr *hdr = &io_u->hdr;
int ret;
ret = write(f->fd, hdr, sizeof(*hdr));
if (ret < 0)
- return errno;
+ return ret;
- if (sync) {
+ if (do_sync) {
ret = read(f->fd, hdr, sizeof(*hdr));
if (ret < 0)
- return -errno;
+ return ret;
return FIO_Q_COMPLETED;
}
return FIO_Q_QUEUED;
}
-static int fio_sgio_doio(struct thread_data *td, struct io_u *io_u, int sync)
+static int fio_sgio_doio(struct thread_data *td, struct io_u *io_u, int do_sync)
{
struct fio_file *f = io_u->file;
if (f->filetype == FIO_TYPE_BD)
return fio_sgio_ioctl_doio(td, f, io_u);
- return fio_sgio_rw_doio(f, io_u, sync);
+ return fio_sgio_rw_doio(f, io_u, do_sync);
}
static int fio_sgio_prep(struct thread_data *td, struct io_u *io_u)
static int fio_sgio_queue(struct thread_data *td, struct io_u *io_u)
{
struct sg_io_hdr *hdr = &io_u->hdr;
- int ret;
+ int ret, do_sync = 0;
- ret = fio_sgio_doio(td, io_u, io_u->ddir == DDIR_SYNC);
+ fio_ro_check(td, io_u);
+
+ if (td->o.sync_io || td->o.odirect || ddir_sync(io_u->ddir))
+ do_sync = 1;
+
+ ret = fio_sgio_doio(td, io_u, do_sync);
if (ret < 0)
io_u->error = errno;
static int fio_sgio_get_bs(struct thread_data *td, unsigned int *bs)
{
struct sgio_data *sd = td->io_ops->data;
- struct io_u *io_u;
+ struct io_u io_u;
struct sg_io_hdr *hdr;
unsigned char buf[8];
int ret;
- io_u = __get_io_u(td);
- io_u->file = &td->files[0];
- assert(io_u);
+ memset(&io_u, 0, sizeof(io_u));
+ io_u.file = td->files[0];
- hdr = &io_u->hdr;
- sgio_hdr_init(sd, hdr, io_u, 0);
+ hdr = &io_u.hdr;
+ sgio_hdr_init(sd, hdr, &io_u, 0);
memset(buf, 0, sizeof(buf));
hdr->cmdp[0] = 0x25;
hdr->dxferp = buf;
hdr->dxfer_len = sizeof(buf);
- ret = fio_sgio_doio(td, io_u, 1);
- if (ret) {
- put_io_u(td, io_u);
+ ret = fio_sgio_doio(td, &io_u, 1);
+ if (ret)
return ret;
- }
*bs = (buf[4] << 24) | (buf[5] << 16) | (buf[6] << 8) | buf[7];
- put_io_u(td, io_u);
return 0;
}
free(sd->pfds);
free(sd->sgbuf);
free(sd);
-
- td->io_ops->data = NULL;
}
}
sd = malloc(sizeof(*sd));
memset(sd, 0, sizeof(*sd));
- sd->cmds = malloc(td->iodepth * sizeof(struct sgio_cmd));
- memset(sd->cmds, 0, td->iodepth * sizeof(struct sgio_cmd));
- sd->events = malloc(td->iodepth * sizeof(struct io_u *));
- memset(sd->events, 0, td->iodepth * sizeof(struct io_u *));
- sd->pfds = malloc(sizeof(struct pollfd) * td->nr_files);
- memset(sd->pfds, 0, sizeof(struct pollfd) * td->nr_files);
- sd->fd_flags = malloc(sizeof(int) * td->nr_files);
- memset(sd->fd_flags, 0, sizeof(int) * td->nr_files);
- sd->sgbuf = malloc(sizeof(struct sg_io_hdr) * td->iodepth);
- memset(sd->sgbuf, 0, sizeof(struct sg_io_hdr) * td->iodepth);
+ sd->cmds = malloc(td->o.iodepth * sizeof(struct sgio_cmd));
+ memset(sd->cmds, 0, td->o.iodepth * sizeof(struct sgio_cmd));
+ sd->events = malloc(td->o.iodepth * sizeof(struct io_u *));
+ memset(sd->events, 0, td->o.iodepth * sizeof(struct io_u *));
+ sd->pfds = malloc(sizeof(struct pollfd) * td->o.nr_files);
+ memset(sd->pfds, 0, sizeof(struct pollfd) * td->o.nr_files);
+ sd->fd_flags = malloc(sizeof(int) * td->o.nr_files);
+ memset(sd->fd_flags, 0, sizeof(int) * td->o.nr_files);
+ sd->sgbuf = malloc(sizeof(struct sg_io_hdr) * td->o.iodepth);
+ memset(sd->sgbuf, 0, sizeof(struct sg_io_hdr) * td->o.iodepth);
td->io_ops->data = sd;
/*
* we want to do it, regardless of whether odirect is set or not
*/
- td->override_sync = 1;
+ td->o.override_sync = 1;
return 0;
}
if (ret)
return 1;
} else {
- log_err("ioengine sgio only works on block devices\n");
+ log_err("ioengine sg only works on block devices\n");
return 1;
}
if (ret)
return ret;
- if (!sd->type_checked && fio_sgio_type_check(td, f)) {
- generic_close_file(td, f);
+ if (sd && !sd->type_checked && fio_sgio_type_check(td, f)) {
+ ret = generic_close_file(td, f);
return 1;
}
.cleanup = fio_sgio_cleanup,
.open_file = fio_sgio_open,
.close_file = generic_close_file,
+ .get_file_size = generic_get_file_size,
.flags = FIO_SYNCIO | FIO_RAWIO,
};
*/
static int fio_sgio_init(struct thread_data fio_unused *td)
{
- fprintf(stderr, "fio: sgio not available\n");
+ log_err("fio: ioengine sg not available\n");
return 1;
}
static struct ioengine_ops ioengine = {
- .name = "sgio",
+ .name = "sg",
.version = FIO_IOOPS_VERSION,
.init = fio_sgio_init,
};