Allow explicit setting of a number of files

[fio.git] / engines / sg.c

diff --git a/engines/sg.c b/engines/sg.c
index b9033b8f7c2a0c8528b35d28f776ef62062028ad..98ecbd1c25a0ca52a003c85e75fe2090ee8a7433 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,
@@ -68,8 +69,9 @@ static int fio_sgio_getevents(struct thread_data *td, int min, int max,
         */
        struct fio_file *f = &td->files[0];
        struct sgio_data *sd = td->io_ops->data;
-       int left = max, ret, events, i, r = 0;
+       int left = max, ret, r = 0;
        void *buf = sd->sgbuf;
+       unsigned int i, events;
 
        /*
         * Fill in the file descriptors
@@ -190,7 +192,7 @@ static int fio_sgio_doio(struct thread_data *td, struct io_u *io_u, int sync)
 {
        struct fio_file *f = io_u->file;
 
-       if (td->filetype == FIO_TYPE_BD)
+       if (f->filetype == FIO_TYPE_BD)
                return fio_sgio_ioctl_doio(td, f, io_u);
 
        return fio_sgio_rw_doio(f, io_u, sync);
@@ -317,10 +319,7 @@ 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));
@@ -337,48 +336,64 @@ static int fio_sgio_init(struct thread_data *td)
 
        td->io_ops->data = sd;
 
-       if (td->filetype == FIO_TYPE_BD) {
+       /*
+        * 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 (f->filetype == FIO_TYPE_BD) {
                if (ioctl(f->fd, BLKSSZGET, &bs) < 0) {
                        td_verror(td, errno, "ioctl");
-                       goto err;
+                       return 1;
                }
-       } else if (td->filetype == FIO_TYPE_CHAR) {
-               int version;
+       } else if (f->filetype == FIO_TYPE_CHAR) {
+               int version, ret;
 
                if (ioctl(f->fd, SG_GET_VERSION_NUM, &version) < 0) {
                        td_verror(td, errno, "ioctl");
-                       goto err;
+                       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) {
+       if (f->filetype == FIO_TYPE_BD) {
                td->io_ops->getevents = NULL;
                td->io_ops->event = NULL;
        }
 
-       /*
-        * 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 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;
+       }
+
+       return 0;
 }
 
 static struct ioengine_ops ioengine = {
@@ -390,6 +405,8 @@ 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,
 };