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From ea0c4c31f6dff7d01e585bd8d5f962b373844544 Mon Sep 17 00:00:00 2001
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From: Lennart Poettering <lennart@poettering.net>
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Date: Mon, 21 Jan 2019 20:13:11 +0100
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Subject: [PATCH] cryptsetup: add some commenting about EAGAIN generation
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(cherry picked from commit b7a0fead10959b03a1fa642a5ae7aca3a6a3dee9)
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Related: #1776408
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---
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 src/cryptsetup/cryptsetup.c | 2 +-
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 1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/cryptsetup/cryptsetup.c b/src/cryptsetup/cryptsetup.c
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index 0881aea915..f2b2557497 100644
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--- a/src/cryptsetup/cryptsetup.c
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+++ b/src/cryptsetup/cryptsetup.c
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@@ -455,7 +455,7 @@ static int attach_tcrypt(
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                 r = read_one_line_file(key_file, &passphrase);
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                 if (r < 0) {
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                         log_error_errno(r, "Failed to read password file '%s': %m", key_file);
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-                        return -EAGAIN;
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+                        return -EAGAIN; /* log with the actual error, but return EAGAIN */
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                 }
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                 params.passphrase = passphrase;