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From:   Petr Vorel <petr.vorel@gmail.com>
To:     linux-nfs@vger.kernel.org
Cc:     Maxime Hadjinlian <maxime.hadjinlian@gmail.com>,
        Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
        Petr Vorel <petr.vorel@gmail.com>
Subject: [nfs-utils PATCH 1/1] mountd: Add check for 'struct file_handle'
Date:   Sun, 17 Nov 2019 23:15:06 +0100
Message-Id: <20191117221506.32084-1-petr.vorel@gmail.com>
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From: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>

The code to check if name_to_handle_at() is implemented generates only a
warning but with some toolchain it doesn't fail to link (the function must be
implemented somewhere).
However the "struct file_handle" type is not available.

So, this patch adds a check for this struct.

Patch taken from buildroot distribution.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
[ pvorel: rebased from nfs-utils-1-3-4 ]
Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
Signed-off-by: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
---
 configure.ac         | 1 +
 utils/mountd/cache.c | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 9ba9d4b5..949ff9fc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -510,6 +510,7 @@ AC_TYPE_PID_T
 AC_TYPE_SIZE_T
 AC_HEADER_TIME
 AC_STRUCT_TM
+AC_CHECK_TYPES([struct file_handle])
 
 dnl *************************************************************
 dnl Check for functions
diff --git a/utils/mountd/cache.c b/utils/mountd/cache.c
index 3861f84a..31e9507d 100644
--- a/utils/mountd/cache.c
+++ b/utils/mountd/cache.c
@@ -446,7 +446,7 @@ static int same_path(char *child, char *parent, int len)
 	if (count_slashes(p) != count_slashes(parent))
 		return 0;
 
-#if HAVE_NAME_TO_HANDLE_AT
+#if defined(HAVE_NAME_TO_HANDLE_AT) && defined(HAVE_STRUCT_FILE_HANDLE)
 	struct {
 		struct file_handle fh;
 		unsigned char handle[128];
-- 
2.24.0