configure: don't check for getmntent

getmntent always exists on Linux (and always has), so don't bother
checking for it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>

6 files changed, 1 insertions, 47 deletions

diff --git a/configure.ac b/configure.ac
index 127bd90efb..228e89a504 100644
--- a/configure.ac
+++ b/configure.ac
@@ -171,7 +171,6 @@ AC_HAVE_FADVISE
 AC_HAVE_MADVISE
 AC_HAVE_MINCORE
 AC_HAVE_SENDFILE
-AC_HAVE_GETMNTENT
 AC_HAVE_FALLOCATE
 AC_HAVE_FIEMAP
 AC_HAVE_PWRITEV2
@@ -179,7 +178,6 @@ AC_HAVE_PREADV
 AC_HAVE_COPY_FILE_RANGE
 AC_HAVE_SYNC_FILE_RANGE
 AC_HAVE_SYNCFS
-AC_HAVE_MNTENT
 AC_HAVE_FLS
 AC_HAVE_READDIR
 AC_HAVE_FSETXATTR
diff --git a/fsr/Makefile b/fsr/Makefile
index 86486fc9c5..d57f2de24c 100644
--- a/fsr/Makefile
+++ b/fsr/Makefile
@@ -11,10 +11,6 @@ LLDLIBS = $(LIBHANDLE) $(LIBFROG) $(LIBPTHREAD) $(LIBBLKID)
 LTDEPENDENCIES = $(LIBHANDLE) $(LIBFROG)
 LLDFLAGS = -static-libtool-libs
 
-ifeq ($(HAVE_GETMNTENT),yes)
-LCFLAGS += -DHAVE_GETMNTENT
-endif
-
 default: depend $(LTCOMMAND)
 
 include $(BUILDRULES)
diff --git a/include/builddefs.in b/include/builddefs.in
index b00d63e8e9..ff2a781494 100644
--- a/include/builddefs.in
+++ b/include/builddefs.in
@@ -95,7 +95,6 @@ HAVE_FADVISE = @have_fadvise@
 HAVE_MADVISE = @have_madvise@
 HAVE_MINCORE = @have_mincore@
 HAVE_SENDFILE = @have_sendfile@
-HAVE_GETMNTENT = @have_getmntent@
 HAVE_FALLOCATE = @have_fallocate@
 HAVE_FIEMAP = @have_fiemap@
 HAVE_PREADV = @have_preadv@
@@ -104,7 +103,6 @@ HAVE_COPY_FILE_RANGE = @have_copy_file_range@
 HAVE_SYNC_FILE_RANGE = @have_sync_file_range@
 HAVE_SYNCFS = @have_syncfs@
 HAVE_READDIR = @have_readdir@
-HAVE_MNTENT = @have_mntent@
 HAVE_FLS = @have_fls@
 HAVE_FSETXATTR = @have_fsetxattr@
 HAVE_MREMAP = @have_mremap@
diff --git a/libfrog/Makefile b/libfrog/Makefile
index dcfd1fb8a9..cafee073fe 100644
--- a/libfrog/Makefile
+++ b/libfrog/Makefile
@@ -54,10 +54,6 @@ workqueue.h
 
 LSRCFILES += gen_crc32table.c
 
-ifeq ($(HAVE_GETMNTENT),yes)
-LCFLAGS += -DHAVE_GETMNTENT
-endif
-
 LDIRT = gen_crc32table crc32table.h
 
 default: ltdepend $(LTLIBRARY)
diff --git a/libfrog/paths.c b/libfrog/paths.c
index d8c42163a7..320b26dbf2 100644
--- a/libfrog/paths.c
+++ b/libfrog/paths.c
@@ -15,6 +15,7 @@
 #include "paths.h"
 #include "input.h"
 #include "projects.h"
+#include <mntent.h>
 #include <limits.h>
 
 extern char *progname;
@@ -295,10 +296,6 @@ fs_cursor_next_entry(
 	return NULL;
 }
 
-
-#if defined(HAVE_GETMNTENT)
-#include <mntent.h>
-
 /*
  * Determines whether the "logdev" or "rtdev" mount options are
  * present for the given mount point.  If so, the value for each (a
@@ -417,10 +414,6 @@ fs_table_initialise_mounts(
 	return error;
 }
 
-#else
-# error "How do I extract info about mounted filesystems on this platform?"
-#endif
-
 /*
  * Given a directory, match it up to a filesystem mount point.
  */
diff --git a/m4/package_libcdev.m4 b/m4/package_libcdev.m4
index 174070651e..5d947a0243 100644
--- a/m4/package_libcdev.m4
+++ b/m4/package_libcdev.m4
@@ -71,24 +71,6 @@ sendfile(0, 0, 0, 0);
   ])
 
 #
-# Check if we have a getmntent libc call (Linux)
-#
-AC_DEFUN([AC_HAVE_GETMNTENT],
-  [ AC_MSG_CHECKING([for getmntent ])
-    AC_COMPILE_IFELSE(
-    [	AC_LANG_PROGRAM([[
-#include <stdio.h>
-#include <mntent.h>
-	]], [[
-getmntent(0);
-	]])
-    ], have_getmntent=yes
-       AC_MSG_RESULT(yes),
-       AC_MSG_RESULT(no))
-    AC_SUBST(have_getmntent)
-  ])
-
-#
 # Check if we have a fallocate libc call (Linux)
 #
 AC_DEFUN([AC_HAVE_FALLOCATE],
@@ -263,15 +245,6 @@ AC_DEFUN([AC_HAVE_FSETXATTR],
   ])
 
 #
-# Check if there is mntent.h
-#
-AC_DEFUN([AC_HAVE_MNTENT],
-  [ AC_CHECK_HEADERS(mntent.h,
-    have_mntent=yes)
-    AC_SUBST(have_mntent)
-  ])
-
-#
 # Check if we have a mremap call (not on Mac OS X)
 #
 AC_DEFUN([AC_HAVE_MREMAP],