Revamp file open/close handling

[fio.git] / engines / sg.c

diff --git a/engines/sg.c b/engines/sg.c
index 8d086bffe6cad7431cd9243932538d735e133cfa..3a6a2486b758df41ea749482c88efa91b2378ae4 100644 (file)
--- a/engines/sg.c
+++ b/engines/sg.c
@@ -26,6 +26,7 @@ struct sgio_data {
        int *fd_flags;
        void *sgbuf;
        unsigned int bs;
+       int type_checked;
 };
 
 static void sgio_hdr_init(struct sgio_data *sd, struct sg_io_hdr *hdr,
@@ -48,21 +49,6 @@ static void sgio_hdr_init(struct sgio_data *sd, struct sg_io_hdr *hdr,
        }
 }
 
-static int fio_sgio_ioctl_getevents(struct thread_data *td, int fio_unused min,
-                                   int max, struct timespec fio_unused *t)
-{
-       assert(max <= 1);
-
-       /*
-        * we can only have one finished io_u for sync io, since the depth
-        * is always 1
-        */
-       if (list_empty(&td->io_u_busylist))
-               return 0;
-
-       return 1;
-}
-
 static int pollin_events(struct pollfd *pfds, int fds)
 {
        int i;
@@ -110,9 +96,9 @@ static int fio_sgio_getevents(struct thread_data *td, int min, int max,
 
                        ret = poll(sd->pfds, td->nr_files, -1);
                        if (ret < 0) {
-                               td_verror(td, errno);
                                if (!r)
-                                       r = -1;
+                                       r = -errno;
+                               td_verror(td, errno, "poll");
                                break;
                        } else if (!ret)
                                continue;
@@ -132,8 +118,8 @@ re_read:
                        if (ret < 0) {
                                if (errno == EAGAIN)
                                        continue;
-                               td_verror(td, errno);
-                               r = -1;
+                               r = -errno;
+                               td_verror(td, errno, "read");
                                break;
                        } else if (ret) {
                                p += ret;
@@ -171,10 +157,15 @@ static int fio_sgio_ioctl_doio(struct thread_data *td,
 {
        struct sgio_data *sd = td->io_ops->data;
        struct sg_io_hdr *hdr = &io_u->hdr;
+       int ret;
 
        sd->events[0] = io_u;
 
-       return ioctl(f->fd, SG_IO, hdr);
+       ret = ioctl(f->fd, SG_IO, hdr);
+       if (ret < 0)
+               return -errno;
+
+       return FIO_Q_COMPLETED;
 }
 
 static int fio_sgio_rw_doio(struct fio_file *f, struct io_u *io_u, int sync)
@@ -189,10 +180,11 @@ static int fio_sgio_rw_doio(struct fio_file *f, struct io_u *io_u, int sync)
        if (sync) {
                ret = read(f->fd, hdr, sizeof(*hdr));
                if (ret < 0)
-                       return errno;
+                       return -errno;
+               return FIO_Q_COMPLETED;
        }
 
-       return 0;
+       return FIO_Q_QUEUED;
 }
 
 static int fio_sgio_doio(struct thread_data *td, struct io_u *io_u, int sync)
@@ -262,11 +254,11 @@ static int fio_sgio_queue(struct thread_data *td, struct io_u *io_u)
        }
 
        if (io_u->error) {
-               td_verror(td, io_u->error);
-               return io_u->error;
+               td_verror(td, io_u->error, "xfer");
+               return FIO_Q_COMPLETED;
        }
 
-       return 0;
+       return ret;
 }
 
 static struct io_u *fio_sgio_event(struct thread_data *td, int event)
@@ -326,10 +318,7 @@ static void fio_sgio_cleanup(struct thread_data *td)
 
 static int fio_sgio_init(struct thread_data *td)
 {
-       struct fio_file *f = &td->files[0];
        struct sgio_data *sd;
-       unsigned int bs;
-       int ret;
 
        sd = malloc(sizeof(*sd));
        memset(sd, 0, sizeof(*sd));
@@ -346,48 +335,64 @@ static int fio_sgio_init(struct thread_data *td)
 
        td->io_ops->data = sd;
 
+       /*
+        * we want to do it, regardless of whether odirect is set or not
+        */
+       td->override_sync = 1;
+       return 0;
+}
+
+static int fio_sgio_type_check(struct thread_data *td, struct fio_file *f)
+{
+       struct sgio_data *sd = td->io_ops->data;
+       unsigned int bs;
+
        if (td->filetype == FIO_TYPE_BD) {
                if (ioctl(f->fd, BLKSSZGET, &bs) < 0) {
-                       td_verror(td, errno);
-                       goto err;
+                       td_verror(td, errno, "ioctl");
+                       return 1;
                }
        } else if (td->filetype == FIO_TYPE_CHAR) {
-               int version;
+               int version, ret;
 
                if (ioctl(f->fd, SG_GET_VERSION_NUM, &version) < 0) {
-                       td_verror(td, errno);
-                       goto err;
+                       td_verror(td, errno, "ioctl");
+                       return 1;
                }
 
                ret = fio_sgio_get_bs(td, &bs);
                if (ret)
-                       goto err;
+                       return 1;
        } else {
                log_err("ioengine sgio only works on block devices\n");
-               goto err;
+               return 1;
        }
 
        sd->bs = bs;
 
-       if (td->filetype == FIO_TYPE_BD)
-               td->io_ops->getevents = fio_sgio_ioctl_getevents;
-       else
-               td->io_ops->getevents = fio_sgio_getevents;
+       if (td->filetype == FIO_TYPE_BD) {
+               td->io_ops->getevents = NULL;
+               td->io_ops->event = NULL;
+       }
+
+       return 0;
+}
+
+static int fio_sgio_open(struct thread_data *td, struct fio_file *f)
+{
+       struct sgio_data *sd = td->io_ops->data;
+       int ret;
+
+       ret = generic_open_file(td, f);
+       if (ret)
+               return ret;
+
+       if (!sd->type_checked && fio_sgio_type_check(td, f)) {
+               generic_close_file(td, f);
+               return 1;
+       }
 
-       /*
-        * we want to do it, regardless of whether odirect is set or not
-        */
-       td->override_sync = 1;
        return 0;
-err:
-       free(sd->events);
-       free(sd->cmds);
-       free(sd->fd_flags);
-       free(sd->pfds);
-       free(sd->sgbuf);
-       free(sd);
-       td->io_ops->data = NULL;
-       return 1;
 }
 
 static struct ioengine_ops ioengine = {
@@ -399,6 +404,8 @@ static struct ioengine_ops ioengine = {
        .getevents      = fio_sgio_getevents,
        .event          = fio_sgio_event,
        .cleanup        = fio_sgio_cleanup,
+       .open_file      = fio_sgio_open,
+       .close_file     = generic_close_file,
        .flags          = FIO_SYNCIO | FIO_RAWIO,
 };