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7e5ea7be7f
Pass `ACL_TYPE_ACCESS` for type parameter of `set_cached_acl()` and
`forget_cached_acl()` to avoid removal of dead code after BUG() in
compile time. Tested on 3.2.0 kernel.
Introduced in 3779913
Reviewed-by: Massimo Maggi <me@massimo-maggi.eu>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Chunwei Chen <david.chen@osnexus.com>
Signed-off-by: Gvozden Neskovic <neskovic@gmail.com>
Closes #5378
326 lines
8.1 KiB
Plaintext
326 lines
8.1 KiB
Plaintext
dnl #
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dnl # Check if posix_acl_release can be used from a ZFS_META_LICENSED
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dnl # module. The is_owner_or_cap macro was replaced by
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dnl # inode_owner_or_capable
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_RELEASE], [
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AC_MSG_CHECKING([whether posix_acl_release() is available])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/cred.h>
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#include <linux/fs.h>
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#include <linux/posix_acl.h>
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],[
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struct posix_acl* tmp = posix_acl_alloc(1, 0);
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posix_acl_release(tmp);
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_POSIX_ACL_RELEASE, 1,
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[posix_acl_release() is available])
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AC_MSG_CHECKING([whether posix_acl_release() is GPL-only])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/module.h>
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#include <linux/cred.h>
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#include <linux/fs.h>
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#include <linux/posix_acl.h>
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MODULE_LICENSE("$ZFS_META_LICENSE");
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],[
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struct posix_acl* tmp = posix_acl_alloc(1, 0);
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posix_acl_release(tmp);
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],[
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AC_MSG_RESULT(no)
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_POSIX_ACL_RELEASE_GPL_ONLY, 1,
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[posix_acl_release() is GPL-only])
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])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 3.14 API change,
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dnl # set_cached_acl() and forget_cached_acl() changed from inline to
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dnl # EXPORT_SYMBOL. In the former case, they may not be usable because of
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dnl # posix_acl_release. In the latter case, we can always use them.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SET_CACHED_ACL_USABLE], [
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AC_MSG_CHECKING([whether set_cached_acl() is usable])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/module.h>
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#include <linux/cred.h>
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#include <linux/fs.h>
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#include <linux/posix_acl.h>
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MODULE_LICENSE("$ZFS_META_LICENSE");
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],[
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struct inode *ip = NULL;
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struct posix_acl *acl = posix_acl_alloc(1, 0);
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set_cached_acl(ip, ACL_TYPE_ACCESS, acl);
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forget_cached_acl(ip, ACL_TYPE_ACCESS);
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_SET_CACHED_ACL_USABLE, 1,
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[posix_acl_release() is usable])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 3.1 API change,
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dnl # posix_acl_chmod_masq() is not exported anymore and posix_acl_chmod()
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dnl # was introduced to replace it.
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dnl #
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dnl # 3.14 API change,
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dnl # posix_acl_chmod() is changed to __posix_acl_chmod()
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_CHMOD], [
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AC_MSG_CHECKING([whether posix_acl_chmod exists])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/fs.h>
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#include <linux/posix_acl.h>
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],[
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posix_acl_chmod(NULL, 0, 0)
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_POSIX_ACL_CHMOD, 1, [posix_acl_chmod() exists])
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],[
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AC_MSG_RESULT(no)
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])
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AC_MSG_CHECKING([whether __posix_acl_chmod exists])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/fs.h>
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#include <linux/posix_acl.h>
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],[
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__posix_acl_chmod(NULL, 0, 0)
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE___POSIX_ACL_CHMOD, 1, [__posix_acl_chmod() exists])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 3.1 API change,
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dnl # posix_acl_equiv_mode now wants an umode_t* instead of a mode_t*
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_EQUIV_MODE_WANTS_UMODE_T], [
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AC_MSG_CHECKING([whether posix_acl_equiv_mode() wants umode_t])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/fs.h>
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#include <linux/posix_acl.h>
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],[
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umode_t tmp;
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posix_acl_equiv_mode(NULL,&tmp);
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_POSIX_ACL_EQUIV_MODE_UMODE_T, 1,
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[ posix_acl_equiv_mode wants umode_t*])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 4.8 API change,
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dnl # The function posix_acl_valid now must be passed a namespace.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_VALID_WITH_NS], [
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AC_MSG_CHECKING([whether posix_acl_valid() wants user namespace])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/fs.h>
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#include <linux/posix_acl.h>
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],[
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struct user_namespace *user_ns = NULL;
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const struct posix_acl *acl = NULL;
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int error;
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error = posix_acl_valid(user_ns, acl);
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_POSIX_ACL_VALID_WITH_NS, 1,
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[posix_acl_valid() wants user namespace])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 2.6.27 API change,
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dnl # Check if inode_operations contains the function permission
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dnl # and expects the nameidata structure to have been removed.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_INODE_OPERATIONS_PERMISSION], [
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AC_MSG_CHECKING([whether iops->permission() exists])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/fs.h>
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int permission_fn(struct inode *inode, int mask) { return 0; }
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static const struct inode_operations
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iops __attribute__ ((unused)) = {
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.permission = permission_fn,
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};
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],[
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_PERMISSION, 1, [iops->permission() exists])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 2.6.26 API change,
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dnl # Check if inode_operations contains the function permission
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dnl # and expects the nameidata structure to be passed.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_INODE_OPERATIONS_PERMISSION_WITH_NAMEIDATA], [
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AC_MSG_CHECKING([whether iops->permission() wants nameidata])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/fs.h>
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int permission_fn(struct inode *inode, int mask,
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struct nameidata *nd) { return 0; }
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static const struct inode_operations
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iops __attribute__ ((unused)) = {
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.permission = permission_fn,
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};
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],[
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_PERMISSION, 1, [iops->permission() exists])
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AC_DEFINE(HAVE_PERMISSION_WITH_NAMEIDATA, 1,
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[iops->permission() with nameidata exists])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 2.6.32 API change,
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dnl # Check if inode_operations contains the function check_acl
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_INODE_OPERATIONS_CHECK_ACL], [
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AC_MSG_CHECKING([whether iops->check_acl() exists])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/fs.h>
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int check_acl_fn(struct inode *inode, int mask) { return 0; }
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static const struct inode_operations
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iops __attribute__ ((unused)) = {
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.check_acl = check_acl_fn,
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};
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],[
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_CHECK_ACL, 1, [iops->check_acl() exists])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 2.6.38 API change,
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dnl # The function check_acl gained a new parameter: flags
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_INODE_OPERATIONS_CHECK_ACL_WITH_FLAGS], [
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AC_MSG_CHECKING([whether iops->check_acl() wants flags])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/fs.h>
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int check_acl_fn(struct inode *inode, int mask,
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unsigned int flags) { return 0; }
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static const struct inode_operations
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iops __attribute__ ((unused)) = {
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.check_acl = check_acl_fn,
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};
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],[
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_CHECK_ACL, 1, [iops->check_acl() exists])
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AC_DEFINE(HAVE_CHECK_ACL_WITH_FLAGS, 1,
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[iops->check_acl() wants flags])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 3.1 API change,
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dnl # Check if inode_operations contains the function get_acl
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_INODE_OPERATIONS_GET_ACL], [
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AC_MSG_CHECKING([whether iops->get_acl() exists])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/fs.h>
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struct posix_acl *get_acl_fn(struct inode *inode, int type)
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{ return NULL; }
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static const struct inode_operations
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iops __attribute__ ((unused)) = {
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.get_acl = get_acl_fn,
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};
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],[
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_GET_ACL, 1, [iops->get_acl() exists])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 3.14 API change,
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dnl # Check if inode_operations contains the function set_acl
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_INODE_OPERATIONS_SET_ACL], [
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AC_MSG_CHECKING([whether iops->set_acl() exists])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/fs.h>
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int set_acl_fn(struct inode *inode, struct posix_acl *acl, int type)
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{ return 0; }
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static const struct inode_operations
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iops __attribute__ ((unused)) = {
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.set_acl = set_acl_fn,
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};
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],[
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_SET_ACL, 1, [iops->set_acl() exists])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 4.7 API change,
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dnl # The kernel get_acl will now check cache before calling i_op->get_acl and
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dnl # do set_cached_acl after that, so i_op->get_acl don't need to do that
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dnl # anymore.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_GET_ACL_HANDLE_CACHE], [
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AC_MSG_CHECKING([whether uncached_acl_sentinel() exists])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/fs.h>
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],[
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void *sentinel __attribute__ ((unused)) = uncached_acl_sentinel(NULL);
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_KERNEL_GET_ACL_HANDLE_CACHE, 1, [uncached_acl_sentinel() exists])
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],[
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AC_MSG_RESULT(no)
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])
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])
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