[mirror_zfs.git] / config / kernel-userns-capabilities.m4

dnl #
dnl # 2.6.38 API change
dnl # ns_capable() was introduced
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_NS_CAPABLE], [
	ZFS_LINUX_TEST_SRC([ns_capable], [
		#include <linux/capability.h>
	],[
		ns_capable((struct user_namespace *)NULL, CAP_SYS_ADMIN);
	])
])

AC_DEFUN([ZFS_AC_KERNEL_NS_CAPABLE], [
	AC_MSG_CHECKING([whether ns_capable exists])
	ZFS_LINUX_TEST_RESULT([ns_capable], [
		AC_MSG_RESULT(yes)
	],[
		ZFS_LINUX_TEST_ERROR([ns_capable()])
	])
])

dnl #
dnl # 4.10 API change
dnl # has_capability() was exported.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_HAS_CAPABILITY], [
	ZFS_LINUX_TEST_SRC([has_capability], [
		#include <linux/capability.h>
	],[
		struct task_struct *task = NULL;
		int cap = 0;
		bool result __attribute__ ((unused));

		result = has_capability(task, cap);
	])
])

AC_DEFUN([ZFS_AC_KERNEL_HAS_CAPABILITY], [
	AC_MSG_CHECKING([whether has_capability() is available])
	ZFS_LINUX_TEST_RESULT_SYMBOL([has_capability],
	    [has_capability], [kernel/capability.c], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_HAS_CAPABILITY, 1, [has_capability() is available])
	],[
		AC_MSG_RESULT(no)
	])
])

dnl #
dnl # 2.6.39 API change
dnl # struct user_namespace was added to struct cred_t as cred->user_ns member
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_CRED_USER_NS], [
	ZFS_LINUX_TEST_SRC([cred_user_ns], [
		#include <linux/cred.h>
	],[
		struct cred cr;
		cr.user_ns = (struct user_namespace *)NULL;
	])
])

AC_DEFUN([ZFS_AC_KERNEL_CRED_USER_NS], [
	AC_MSG_CHECKING([whether cred_t->user_ns exists])
	ZFS_LINUX_TEST_RESULT([cred_user_ns], [
		AC_MSG_RESULT(yes)
	],[
		ZFS_LINUX_TEST_ERROR([cred_t->user_ns()])
	])
])

dnl #
dnl # 3.4 API change
dnl # kuid_has_mapping() and kgid_has_mapping() were added to distinguish
dnl # between internal kernel uids/gids and user namespace uids/gids.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_KUID_HAS_MAPPING], [
	ZFS_LINUX_TEST_SRC([kuid_has_mapping], [
		#include <linux/uidgid.h>
	],[
		kuid_has_mapping((struct user_namespace *)NULL, KUIDT_INIT(0));
		kgid_has_mapping((struct user_namespace *)NULL, KGIDT_INIT(0));
	])
])

AC_DEFUN([ZFS_AC_KERNEL_KUID_HAS_MAPPING], [
	AC_MSG_CHECKING([whether kuid_has_mapping/kgid_has_mapping exist])
	ZFS_LINUX_TEST_RESULT([kuid_has_mapping], [
		AC_MSG_RESULT(yes)
	],[
		ZFS_LINUX_TEST_ERROR([kuid_has_mapping()])
	])
])

AC_DEFUN([ZFS_AC_KERNEL_SRC_USERNS_CAPABILITIES], [
	ZFS_AC_KERNEL_SRC_NS_CAPABLE
	ZFS_AC_KERNEL_SRC_HAS_CAPABILITY
	ZFS_AC_KERNEL_SRC_CRED_USER_NS
	ZFS_AC_KERNEL_SRC_KUID_HAS_MAPPING
])

AC_DEFUN([ZFS_AC_KERNEL_USERNS_CAPABILITIES], [
	ZFS_AC_KERNEL_NS_CAPABLE
	ZFS_AC_KERNEL_HAS_CAPABILITY
	ZFS_AC_KERNEL_CRED_USER_NS
	ZFS_AC_KERNEL_KUID_HAS_MAPPING
])
Commit	Line	Data
0e85048f WB	1	dnl #
	2	dnl # 2.6.38 API change
	3	dnl # ns_capable() was introduced
	4	dnl #
608f8749 BB	5	AC_DEFUN([ZFS_AC_KERNEL_SRC_NS_CAPABLE], [
608f8749 BB	6	ZFS_LINUX_TEST_SRC([ns_capable], [
0e85048f WB	7	#include <linux/capability.h>
	8	],[
	9	ns_capable((struct user_namespace *)NULL, CAP_SYS_ADMIN);
608f8749 BB	10	])
	11	])
	12
	13	AC_DEFUN([ZFS_AC_KERNEL_NS_CAPABLE], [
	14	AC_MSG_CHECKING([whether ns_capable exists])
	15	ZFS_LINUX_TEST_RESULT([ns_capable], [
0e85048f	16	AC_MSG_RESULT(yes)
0e85048f	17	],[
066e8252	18	ZFS_LINUX_TEST_ERROR([ns_capable()])
0e85048f WB	19	])
	20	])
	21
e862b7ec BB	22	dnl #
	23	dnl # 4.10 API change
	24	dnl # has_capability() was exported.
	25	dnl #
	26	AC_DEFUN([ZFS_AC_KERNEL_SRC_HAS_CAPABILITY], [
	27	ZFS_LINUX_TEST_SRC([has_capability], [
	28	#include <linux/capability.h>
	29	],[
	30	struct task_struct *task = NULL;
	31	int cap = 0;
	32	bool result __attribute__ ((unused));
	33
	34	result = has_capability(task, cap);
	35	])
	36	])
	37
	38	AC_DEFUN([ZFS_AC_KERNEL_HAS_CAPABILITY], [
	39	AC_MSG_CHECKING([whether has_capability() is available])
	40	ZFS_LINUX_TEST_RESULT_SYMBOL([has_capability],
	41	[has_capability], [kernel/capability.c], [
	42	AC_MSG_RESULT(yes)
	43	AC_DEFINE(HAVE_HAS_CAPABILITY, 1, [has_capability() is available])
	44	],[
	45	AC_MSG_RESULT(no)
	46	])
	47	])
	48
0e85048f WB	49	dnl #
0e85048f WB	50	dnl # 2.6.39 API change
066e8252	51	dnl # struct user_namespace was added to struct cred_t as cred->user_ns member
0e85048f	52	dnl #
608f8749 BB	53	AC_DEFUN([ZFS_AC_KERNEL_SRC_CRED_USER_NS], [
608f8749 BB	54	ZFS_LINUX_TEST_SRC([cred_user_ns], [
0e85048f WB	55	#include <linux/cred.h>
	56	],[
	57	struct cred cr;
	58	cr.user_ns = (struct user_namespace *)NULL;
608f8749 BB	59	])
	60	])
	61
	62	AC_DEFUN([ZFS_AC_KERNEL_CRED_USER_NS], [
	63	AC_MSG_CHECKING([whether cred_t->user_ns exists])
	64	ZFS_LINUX_TEST_RESULT([cred_user_ns], [
0e85048f	65	AC_MSG_RESULT(yes)
0e85048f	66	],[
066e8252	67	ZFS_LINUX_TEST_ERROR([cred_t->user_ns()])
0e85048f WB	68	])
	69	])
	70
	71	dnl #
	72	dnl # 3.4 API change
	73	dnl # kuid_has_mapping() and kgid_has_mapping() were added to distinguish
	74	dnl # between internal kernel uids/gids and user namespace uids/gids.
	75	dnl #
608f8749 BB	76	AC_DEFUN([ZFS_AC_KERNEL_SRC_KUID_HAS_MAPPING], [
608f8749 BB	77	ZFS_LINUX_TEST_SRC([kuid_has_mapping], [
0e85048f WB	78	#include <linux/uidgid.h>
	79	],[
	80	kuid_has_mapping((struct user_namespace *)NULL, KUIDT_INIT(0));
	81	kgid_has_mapping((struct user_namespace *)NULL, KGIDT_INIT(0));
608f8749 BB	82	])
	83	])
	84
	85	AC_DEFUN([ZFS_AC_KERNEL_KUID_HAS_MAPPING], [
	86	AC_MSG_CHECKING([whether kuid_has_mapping/kgid_has_mapping exist])
	87	ZFS_LINUX_TEST_RESULT([kuid_has_mapping], [
0e85048f	88	AC_MSG_RESULT(yes)
0e85048f	89	],[
066e8252	90	ZFS_LINUX_TEST_ERROR([kuid_has_mapping()])
0e85048f WB	91	])
	92	])
	93
608f8749 BB	94	AC_DEFUN([ZFS_AC_KERNEL_SRC_USERNS_CAPABILITIES], [
608f8749 BB	95	ZFS_AC_KERNEL_SRC_NS_CAPABLE
e862b7ec	96	ZFS_AC_KERNEL_SRC_HAS_CAPABILITY
608f8749 BB	97	ZFS_AC_KERNEL_SRC_CRED_USER_NS
	98	ZFS_AC_KERNEL_SRC_KUID_HAS_MAPPING
	99	])
	100
0e85048f WB	101	AC_DEFUN([ZFS_AC_KERNEL_USERNS_CAPABILITIES], [
0e85048f WB	102	ZFS_AC_KERNEL_NS_CAPABLE
e862b7ec	103	ZFS_AC_KERNEL_HAS_CAPABILITY
0e85048f WB	104	ZFS_AC_KERNEL_CRED_USER_NS
	105	ZFS_AC_KERNEL_KUID_HAS_MAPPING
	106	])