From e9a2a2cf25fc5070d6a0e74f86f45be2675daadd Mon Sep 17 00:00:00 2001
From: Colin Walters <walters@verbum.org>
Date: Thu, 14 Dec 2023 08:00:38 -0500
Subject: [PATCH] zipl: Fix error handling for read

The return value is not errno.
---
 src/libostree/ostree-bootloader-zipl.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/libostree/ostree-bootloader-zipl.c b/src/libostree/ostree-bootloader-zipl.c
index 43a74cace5..d6fb7ebd3e 100644
--- a/src/libostree/ostree-bootloader-zipl.c
+++ b/src/libostree/ostree-bootloader-zipl.c
@@ -149,8 +149,8 @@ _ostree_secure_boot_is_enabled (gboolean *out_enabled, GCancellable *cancellable
   while (*out_enabled != TRUE && max_lines > 0)
     {
       char buf[1024];
-      ssize_t len = read (fd, buf, sizeof (buf));
-      if (len == -EAGAIN)
+      ssize_t len = TEMP_FAILURE_RETRY (read (fd, buf, sizeof (buf)));
+      if (len < 0)
         break;
       *out_enabled = strstr (buf, "Secure-IPL enabled") != NULL;
       --max_lines;