--- /dev/null
+/*
+ * libefiboot - library for the manipulation of EFI boot variables
+ * Copyright 2012-2018 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "fix_coverity.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <stdint.h>
+#include <unistd.h>
+
+#include "efiboot.h"
+
+/*
+ * support for virtio block devices
+ * /sys/dev/block/maj:min look like:
+ * 252:0 -> ../../devices/pci0000:00/0000:00:07.0/virtio2/block/vda
+ * 252:1 -> ../../devices/pci0000:00/0000:00:07.0/virtio2/block/vda/vda1
+ *
+ * vda/device looks like:
+ * device -> ../../../virtio2
+ *
+ * In this case we get 1 storage controller per pci device, so we actually
+ * write the device path as:
+ *
+ * PciRoot(0x0)/Pci(0x7,0x0)/HD(1,GPT,14d30998-b5e3-4b8f-9be3-58a454dd06bf,0x800,0x53000)/File(\EFI\fedora\shimx64.efi)
+ *
+ * But usually we just write the HD() entry, of course.
+ */
+static ssize_t
+parse_virtblk(struct device *dev, const char *current)
+{
+ uint32_t tosser;
+ int pos;
+ int rc;
+ char *spaces;
+
+ pos = strlen(current);
+ spaces = alloca(pos+1);
+ memset(spaces, ' ', pos+1);
+ spaces[pos] = '\0';
+ pos = 0;
+
+ debug(DEBUG, "entry");
+
+ debug(DEBUG, "searching for virtio0/");
+ rc = sscanf(current, "virtio%x/%n", &tosser, &pos);
+ debug(DEBUG, "current:\"%s\" rc:%d pos:%d\n", current, rc, pos);
+ arrow(DEBUG, spaces, 9, pos, rc, 1);
+ /*
+ * If we couldn't find virtioX/ then it isn't a virtio device.
+ */
+ if (rc < 1)
+ return 0;
+
+ dev->interface_type = virtblk;
+
+ return pos;
+}
+
+enum interface_type virtblk_iftypes[] = { virtblk, unknown };
+
+struct dev_probe HIDDEN virtblk_parser = {
+ .name = "virtio block",
+ .iftypes = virtblk_iftypes,
+ .flags = DEV_PROVIDES_HD,
+ .parse = parse_virtblk,
+ .create = NULL,
+};
+
}
- if (!found &&
- (info->interface_type == interface_type_unknown ||
- info->interface_type == atapi ||
- info->interface_type == usb ||
- info->interface_type == i1394 ||
- info->interface_type == fibre ||
- info->interface_type == md)) {
- uint32_t tosser;
- int tmpoff;
-
- rc = sscanf(linkbuf+loff, "virtio%x/%n", &tosser, &tmpoff);
- if (rc < 0) {
- return -1;
- } else if (rc == 1) {
- info->interface_type = virtblk;
- loff += tmpoff;
- found = 1;
- }
- }
-
/* /dev/nvme0n1 looks like:
* /sys/dev/block/259:0 -> ../../devices/pci0000:00/0000:00:1d.0/0000:05:00.0/nvme/nvme0/nvme0n1
*/