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vhost-user-scsi: glib calls that allocate don't return NULL 

They abort instead, so get rid of failure conditions.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Marc-André Lureau 2017-08-16 20:40:46 +02:00
parent 3d9ad8be3d
commit b4fe56e9ed
1 changed files with 7 additions and 45 deletions
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52
contrib/vhost-user-scsi/vhost-user-scsi.c
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@ -139,8 +139,8 @@ static GSourceFuncs vus_gsrc_funcs = {
NULL
};
static int vus_gsrc_new(vhost_scsi_dev_t *vdev_scsi, int fd, GIOCondition cond,
vu_watch_cb vu_cb, GSourceFunc gsrc_cb, gpointer data)
static void vus_gsrc_new(vhost_scsi_dev_t *vdev_scsi, int fd, GIOCondition cond,
vu_watch_cb vu_cb, GSourceFunc gsrc_cb, gpointer data)
{
GSource *vus_gsrc;
vus_gsrc_t *vus_src;
@ -152,10 +152,6 @@ static int vus_gsrc_new(vhost_scsi_dev_t *vdev_scsi, int fd, GIOCondition cond,
assert(!(vu_cb && gsrc_cb));
vus_gsrc = g_source_new(&vus_gsrc_funcs, sizeof(vus_gsrc_t));
if (!vus_gsrc) {
PERR("Error creating GSource for new watch");
return -1;
}
vus_src = (vus_gsrc_t *)vus_gsrc;
vus_src->vdev_scsi = vdev_scsi;
@ -171,8 +167,6 @@ static int vus_gsrc_new(vhost_scsi_dev_t *vdev_scsi, int fd, GIOCondition cond,
g_tree_insert(vdev_scsi->fdmap, (gpointer)(uintptr_t)fd,
(gpointer)(uintptr_t)id);
return 0;
}
/* from libiscsi's scsi-lowlevel.h **
@ -440,10 +434,7 @@ static void vus_panic_cb(VuDev *vu_dev, const char *buf)
PERR("vu_panic: %s", buf);
}
if (vdev_scsi) {
assert(vdev_scsi->loop);
g_main_loop_quit(vdev_scsi->loop);
}
g_main_loop_quit(vdev_scsi->loop);
}
static void vus_add_watch_cb(VuDev *vu_dev, int fd, int vu_evt, vu_watch_cb cb,
@ -471,9 +462,7 @@ static void vus_add_watch_cb(VuDev *vu_dev, int fd, int vu_evt, vu_watch_cb cb,
(void)g_tree_remove(vdev_scsi->fdmap, (gpointer)(uintptr_t)fd);
}
if (vus_gsrc_new(vdev_scsi, fd, vu_evt, cb, NULL, pvt)) {
vus_panic_cb(vu_dev, NULL);
}
vus_gsrc_new(vdev_scsi, fd, vu_evt, cb, NULL, pvt);
}
static void vus_del_watch_cb(VuDev *vu_dev, int fd)
@ -703,10 +692,7 @@ static void vdev_scsi_free(vhost_scsi_dev_t *vdev_scsi)
vdev_scsi->server_sock = -1;
}
if (vdev_scsi->loop) {
g_main_loop_unref(vdev_scsi->loop);
vdev_scsi->loop = NULL;
}
g_main_loop_unref(vdev_scsi->loop);
g_free(vdev_scsi);
}
@ -717,23 +703,9 @@ static vhost_scsi_dev_t *vdev_scsi_new(int server_sock)
vdev_scsi = g_new0(vhost_scsi_dev_t, 1);
vdev_scsi->server_sock = server_sock;
vdev_scsi->loop = g_main_loop_new(NULL, FALSE);
if (!vdev_scsi->loop) {
PERR("Error creating glib event loop");
goto err;
}
vdev_scsi->fdmap = g_tree_new(vus_fdmap_compare);
if (!vdev_scsi->fdmap) {
PERR("Error creating glib tree for fdmap");
goto err;
}
return vdev_scsi;
err:
vdev_scsi_free(vdev_scsi);
return NULL;
}
static int vdev_scsi_add_iscsi_lun(vhost_scsi_dev_t *vdev_scsi,
@ -777,21 +749,14 @@ static int vdev_scsi_run(vhost_scsi_dev_t *vdev_scsi)
vus_del_watch_cb,
&vus_iface);
if (vus_gsrc_new(vdev_scsi, cli_sock, G_IO_IN, NULL, vus_vhost_cb,
&vdev_scsi->vu_dev)) {
goto fail;
}
vus_gsrc_new(vdev_scsi, cli_sock, G_IO_IN, NULL, vus_vhost_cb,
&vdev_scsi->vu_dev);
g_main_loop_run(vdev_scsi->loop);
out:
vu_deinit(&vdev_scsi->vu_dev);
return ret;
fail:
ret = -1;
goto out;
}
int main(int argc, char **argv)
@ -824,9 +789,6 @@ int main(int argc, char **argv)
goto err;
}
vdev_scsi = vdev_scsi_new(sock);
if (!vdev_scsi) {
goto err;
}
vhost_scsi_devs[0] = vdev_scsi;
if (vdev_scsi_add_iscsi_lun(vdev_scsi, iscsi_uri, 0) != 0) {