From 5a84c60fb95ee7ca1393efe93d9d17c80497c6b6 Mon Sep 17 00:00:00 2001 From: chrisrd Date: Fri, 16 Feb 2018 07:58:23 +1100 Subject: [PATCH] Fix config issues: frame size and headers MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 1. With various (debug and/or tracing?) kernel options enabled it's possible for 'struct inode' and 'struct super_block' to exceed the default frame size, leaving errors like this in config.log: build/conftest.c:116:1: error: the frame size of 1048 bytes is larger than 1024 bytes [-Werror=frame-larger-than=] Fix this by removing the frame size warning for config checks 2. Without the correct headers included, it's possible for declarations to be missed, leaving errors like this in the config.log: build/conftest.c:131:14: error: ‘struct nameidata’ declared inside parameter list [-Werror] Fix this by adding appropriate headers. Note: Both these issues can result in silent config failures because the compile failure is taken to mean "this option is not supported by this kernel" rather than "there's something wrong with the config test". This can lead to something merely annoying (compile failures) to something potentially serious (miscompiled or misused kernel primitives or functions). E.g. the fixes included here resulted in these additional defines in zfs_config.h with linux v4.14.19: Also, drive-by whitespace fixes in config/* files which don't mention "GNU" (those ones look to be imported from elsewhere so leave them alone). Reviewed by: Brian Behlendorf Signed-off-by: Chris Dunlop Closes #7169 --- config/deb.am | 8 ++++---- config/kernel-acl.m4 | 1 + config/kernel-create-nameidata.m4 | 1 + config/kernel-dentry-operations.m4 | 1 + config/kernel-get-link.m4 | 2 +- config/kernel-lookup-nameidata.m4 | 1 + config/kernel-vm_node_stat.m4 | 2 +- config/kernel.m4 | 2 +- config/tgz.am | 4 ++-- config/user-libblkid.m4 | 2 +- 10 files changed, 14 insertions(+), 10 deletions(-) diff --git a/config/deb.am b/config/deb.am index 1b51f93163..58ab96e186 100644 --- a/config/deb.am +++ b/config/deb.am @@ -2,16 +2,16 @@ deb-local: @(if test "${HAVE_DPKGBUILD}" = "no"; then \ echo -e "\n" \ "*** Required util ${DPKGBUILD} missing. Please install the\n" \ - "*** package for your distribution which provides ${DPKGBUILD},\n" \ + "*** package for your distribution which provides ${DPKGBUILD},\n" \ "*** re-run configure, and try again.\n"; \ - exit 1; \ + exit 1; \ fi; \ if test "${HAVE_ALIEN}" = "no"; then \ echo -e "\n" \ "*** Required util ${ALIEN} missing. Please install the\n" \ - "*** package for your distribution which provides ${ALIEN},\n" \ + "*** package for your distribution which provides ${ALIEN},\n" \ "*** re-run configure, and try again.\n"; \ - exit 1; \ + exit 1; \ fi) deb-kmod: deb-local rpm-kmod diff --git a/config/kernel-acl.m4 b/config/kernel-acl.m4 index 311484349d..02cc020e5c 100644 --- a/config/kernel-acl.m4 +++ b/config/kernel-acl.m4 @@ -184,6 +184,7 @@ AC_DEFUN([ZFS_AC_KERNEL_INODE_OPERATIONS_PERMISSION_WITH_NAMEIDATA], [ AC_MSG_CHECKING([whether iops->permission() wants nameidata]) ZFS_LINUX_TRY_COMPILE([ #include + #include int permission_fn(struct inode *inode, int mask, struct nameidata *nd) { return 0; } diff --git a/config/kernel-create-nameidata.m4 b/config/kernel-create-nameidata.m4 index a71490a004..d4c155c57f 100644 --- a/config/kernel-create-nameidata.m4 +++ b/config/kernel-create-nameidata.m4 @@ -5,6 +5,7 @@ AC_DEFUN([ZFS_AC_KERNEL_CREATE_NAMEIDATA], [ AC_MSG_CHECKING([whether iops->create() passes nameidata]) ZFS_LINUX_TRY_COMPILE([ #include + #include #ifdef HAVE_MKDIR_UMODE_T int inode_create(struct inode *inode ,struct dentry *dentry, diff --git a/config/kernel-dentry-operations.m4 b/config/kernel-dentry-operations.m4 index 3182490c90..61f5a27af5 100644 --- a/config/kernel-dentry-operations.m4 +++ b/config/kernel-dentry-operations.m4 @@ -5,6 +5,7 @@ AC_DEFUN([ZFS_AC_KERNEL_D_REVALIDATE_NAMEIDATA], [ AC_MSG_CHECKING([whether dops->d_revalidate() takes struct nameidata]) ZFS_LINUX_TRY_COMPILE([ #include + #include int revalidate (struct dentry *dentry, struct nameidata *nidata) { return 0; } diff --git a/config/kernel-get-link.m4 b/config/kernel-get-link.m4 index 022c49c54d..3cda08c1b4 100644 --- a/config/kernel-get-link.m4 +++ b/config/kernel-get-link.m4 @@ -41,7 +41,7 @@ AC_DEFUN([ZFS_AC_KERNEL_FOLLOW_LINK], [ AC_DEFINE(HAVE_FOLLOW_LINK_NAMEIDATA, 1, [iops->follow_link() nameidata]) ],[ - AC_MSG_ERROR(no; please file a bug report) + AC_MSG_ERROR(no; please file a bug report) ]) ]) ]) diff --git a/config/kernel-lookup-nameidata.m4 b/config/kernel-lookup-nameidata.m4 index 43f5fb4cbc..5453be5e8e 100644 --- a/config/kernel-lookup-nameidata.m4 +++ b/config/kernel-lookup-nameidata.m4 @@ -5,6 +5,7 @@ AC_DEFUN([ZFS_AC_KERNEL_LOOKUP_NAMEIDATA], [ AC_MSG_CHECKING([whether iops->lookup() passes nameidata]) ZFS_LINUX_TRY_COMPILE([ #include + #include struct dentry *inode_lookup(struct inode *inode, struct dentry *dentry, struct nameidata *nidata) diff --git a/config/kernel-vm_node_stat.m4 b/config/kernel-vm_node_stat.m4 index e1c42f884b..5dcd9d8275 100644 --- a/config/kernel-vm_node_stat.m4 +++ b/config/kernel-vm_node_stat.m4 @@ -7,7 +7,7 @@ AC_DEFUN([ZFS_AC_KERNEL_VM_NODE_STAT], [ ZFS_LINUX_TRY_COMPILE([ #include #include - ],[ + ],[ int a __attribute__ ((unused)) = NR_VM_NODE_STAT_ITEMS; long x __attribute__ ((unused)) = atomic_long_read(&vm_node_stat[0]); diff --git a/config/kernel.m4 b/config/kernel.m4 index b83f021e87..d4a84b2b28 100644 --- a/config/kernel.m4 +++ b/config/kernel.m4 @@ -722,7 +722,7 @@ AC_DEFUN([ZFS_LINUX_COMPILE_IFELSE], [ modpost_flag='' test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage AS_IF( - [AC_TRY_COMMAND(cp conftest.c conftest.h build && make [$2] -C $LINUX_OBJ EXTRA_CFLAGS="-Werror $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag) >/dev/null && AC_TRY_COMMAND([$3])], + [AC_TRY_COMMAND(cp conftest.c conftest.h build && make [$2] -C $LINUX_OBJ EXTRA_CFLAGS="-Werror $FRAME_LARGER_THAN $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag) >/dev/null && AC_TRY_COMMAND([$3])], [$4], [_AC_MSG_LOG_CONFTEST m4_ifvaln([$5],[$5])] ) diff --git a/config/tgz.am b/config/tgz.am index 2997b1de23..0657d045d1 100644 --- a/config/tgz.am +++ b/config/tgz.am @@ -2,9 +2,9 @@ tgz-local: @(if test "${HAVE_ALIEN}" = "no"; then \ echo -e "\n" \ "*** Required util ${ALIEN} missing. Please install the\n" \ - "*** package for your distribution which provides ${ALIEN},\n" \ + "*** package for your distribution which provides ${ALIEN},\n" \ "*** re-run configure, and try again.\n"; \ - exit 1; \ + exit 1; \ fi) tgz-kmod: tgz-local rpm-kmod diff --git a/config/user-libblkid.m4 b/config/user-libblkid.m4 index 5bc7f466ae..88e6f990b7 100644 --- a/config/user-libblkid.m4 +++ b/config/user-libblkid.m4 @@ -6,7 +6,7 @@ AC_DEFUN([ZFS_AC_CONFIG_USER_LIBBLKID], [ LIBBLKID= AC_CHECK_HEADER([blkid/blkid.h], [], [AC_MSG_FAILURE([ - *** blkid.h missing, libblkid-devel package required])]) + *** blkid.h missing, libblkid-devel package required])]) AC_SUBST([LIBBLKID], ["-lblkid"]) AC_DEFINE([HAVE_LIBBLKID], 1, [Define if you have libblkid])