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From e83002b08aa6db57b90d89968ab8d34f6c7f73cf Mon Sep 17 00:00:00 2001
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From: Peter Jones <pjones@redhat.com>
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Date: Mon, 17 Sep 2018 16:13:24 -0400
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Subject: [PATCH 29/30] Deal with devices that don't have a ->device link in
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sysfs
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Signed-off-by: Peter Jones <pjones@redhat.com>
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---
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src/linux.c | 53 ++++++++++++++++++++++++++++++-----------------------
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1 file changed, 30 insertions(+), 23 deletions(-)
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diff --git a/src/linux.c b/src/linux.c
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index 19eb488c992..6d405af8a76 100644
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--- a/src/linux.c
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+++ b/src/linux.c
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@@ -389,43 +389,50 @@ struct device HIDDEN
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rc = sysfs_readlink(&tmpbuf, "block/%s/device", dev->disk_name);
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if (rc < 0 || !tmpbuf) {
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- efi_error("readlink of /sys/block/%s/device failed",
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+ debug("readlink of /sys/block/%s/device failed",
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dev->disk_name);
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- goto err;
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+
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+ dev->device = strdup("");
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+ } else {
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+ dev->device = strdup(tmpbuf);
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}
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- dev->device = strdup(tmpbuf);
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if (!dev->device) {
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efi_error("strdup(\"%s\") failed", tmpbuf);
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goto err;
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}
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- rc = sysfs_readlink(&tmpbuf, "block/%s/device/driver", dev->disk_name);
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- if (rc < 0 || !tmpbuf) {
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- if (errno == ENOENT) {
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- /*
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- * nvme, for example, will have nvme0n1/device point
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- * at nvme0, and we need to look for device/driver
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- * there.
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- */
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- rc = sysfs_readlink(&tmpbuf,
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- "block/%s/device/device/driver",
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- dev->disk_name);
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- }
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+ if (dev->device[0] != 0) {
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+ rc = sysfs_readlink(&tmpbuf, "block/%s/device/driver", dev->disk_name);
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if (rc < 0 || !tmpbuf) {
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- efi_error("readlink of /sys/block/%s/device/driver failed",
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- dev->disk_name);
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+ if (errno == ENOENT) {
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+ /*
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+ * nvme, for example, will have nvme0n1/device point
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+ * at nvme0, and we need to look for device/driver
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+ * there.
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+ */
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+ rc = sysfs_readlink(&tmpbuf,
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+ "block/%s/device/device/driver",
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+ dev->disk_name);
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+ }
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+ if (rc < 0 || !tmpbuf) {
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+ efi_error("readlink of /sys/block/%s/device/driver failed",
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+ dev->disk_name);
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+ goto err;
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+ }
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+ }
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+
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+ linkbuf = pathseg(tmpbuf, -1);
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+ if (!linkbuf) {
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+ efi_error("could not get segment -1 of \"%s\"", tmpbuf);
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goto err;
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}
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- }
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- linkbuf = pathseg(tmpbuf, -1);
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- if (!linkbuf) {
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- efi_error("could not get segment -1 of \"%s\"", tmpbuf);
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- goto err;
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+ dev->driver = strdup(linkbuf);
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+ } else {
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+ dev->driver = strdup("");
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}
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- dev->driver = strdup(linkbuf);
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if (!dev->driver) {
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efi_error("strdup(\"%s\") failed", linkbuf);
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goto err;
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--
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2.17.1
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