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zfs/config/kernel-userns-capabilities.m4

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Take user namespaces into account in policy checks Change file related checks to use user namespaces and make sure involved uids/gids are mappable in the current namespace. Note that checks without file ownership information will still not take user namespaces into account, as some of these should be handled via 'zfs allow' (otherwise root in a user namespace could issue commands such as `zpool export`). This also adds an initial user namespace regression test for the setgid bit loss, with a user_ns_exec helper usable in further tests. Additionally, configure checks for the required user namespace related features are added for: * ns_capable * kuid/kgid_has_mapping() * user_ns in cred_t Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com> Closes #6800 Closes #7270
2018-03-07 23:40:42 +00:00
dnl #
dnl # 2.6.38 API change
dnl # ns_capable() was introduced
dnl #
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341 Conflicts: Makefile.am config/kernel-fpu.m4
2019-10-01 19:50:34 +00:00
AC_DEFUN([ZFS_AC_KERNEL_SRC_NS_CAPABLE], [
ZFS_LINUX_TEST_SRC([ns_capable], [
Take user namespaces into account in policy checks Change file related checks to use user namespaces and make sure involved uids/gids are mappable in the current namespace. Note that checks without file ownership information will still not take user namespaces into account, as some of these should be handled via 'zfs allow' (otherwise root in a user namespace could issue commands such as `zpool export`). This also adds an initial user namespace regression test for the setgid bit loss, with a user_ns_exec helper usable in further tests. Additionally, configure checks for the required user namespace related features are added for: * ns_capable * kuid/kgid_has_mapping() * user_ns in cred_t Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com> Closes #6800 Closes #7270
2018-03-07 23:40:42 +00:00
#include <linux/capability.h>
],[
ns_capable((struct user_namespace *)NULL, CAP_SYS_ADMIN);
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341 Conflicts: Makefile.am config/kernel-fpu.m4
2019-10-01 19:50:34 +00:00
])
])
AC_DEFUN([ZFS_AC_KERNEL_NS_CAPABLE], [
AC_MSG_CHECKING([whether ns_capable exists])
ZFS_LINUX_TEST_RESULT([ns_capable], [
Take user namespaces into account in policy checks Change file related checks to use user namespaces and make sure involved uids/gids are mappable in the current namespace. Note that checks without file ownership information will still not take user namespaces into account, as some of these should be handled via 'zfs allow' (otherwise root in a user namespace could issue commands such as `zpool export`). This also adds an initial user namespace regression test for the setgid bit loss, with a user_ns_exec helper usable in further tests. Additionally, configure checks for the required user namespace related features are added for: * ns_capable * kuid/kgid_has_mapping() * user_ns in cred_t Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com> Closes #6800 Closes #7270
2018-03-07 23:40:42 +00:00
AC_MSG_RESULT(yes)
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341 Conflicts: Makefile.am config/kernel-fpu.m4
2019-10-01 19:50:34 +00:00
AC_DEFINE(HAVE_NS_CAPABLE, 1, [ns_capable exists])
Take user namespaces into account in policy checks Change file related checks to use user namespaces and make sure involved uids/gids are mappable in the current namespace. Note that checks without file ownership information will still not take user namespaces into account, as some of these should be handled via 'zfs allow' (otherwise root in a user namespace could issue commands such as `zpool export`). This also adds an initial user namespace regression test for the setgid bit loss, with a user_ns_exec helper usable in further tests. Additionally, configure checks for the required user namespace related features are added for: * ns_capable * kuid/kgid_has_mapping() * user_ns in cred_t Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com> Closes #6800 Closes #7270
2018-03-07 23:40:42 +00:00
],[
AC_MSG_RESULT(no)
])
])
dnl #
dnl # 2.6.39 API change
dnl # struct user_namespace was added to struct cred_t as
dnl # cred->user_ns member
dnl # Note that current_user_ns() was added in 2.6.28.
dnl #
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341 Conflicts: Makefile.am config/kernel-fpu.m4
2019-10-01 19:50:34 +00:00
AC_DEFUN([ZFS_AC_KERNEL_SRC_CRED_USER_NS], [
ZFS_LINUX_TEST_SRC([cred_user_ns], [
Take user namespaces into account in policy checks Change file related checks to use user namespaces and make sure involved uids/gids are mappable in the current namespace. Note that checks without file ownership information will still not take user namespaces into account, as some of these should be handled via 'zfs allow' (otherwise root in a user namespace could issue commands such as `zpool export`). This also adds an initial user namespace regression test for the setgid bit loss, with a user_ns_exec helper usable in further tests. Additionally, configure checks for the required user namespace related features are added for: * ns_capable * kuid/kgid_has_mapping() * user_ns in cred_t Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com> Closes #6800 Closes #7270
2018-03-07 23:40:42 +00:00
#include <linux/cred.h>
],[
struct cred cr;
cr.user_ns = (struct user_namespace *)NULL;
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341 Conflicts: Makefile.am config/kernel-fpu.m4
2019-10-01 19:50:34 +00:00
])
])
AC_DEFUN([ZFS_AC_KERNEL_CRED_USER_NS], [
AC_MSG_CHECKING([whether cred_t->user_ns exists])
ZFS_LINUX_TEST_RESULT([cred_user_ns], [
Take user namespaces into account in policy checks Change file related checks to use user namespaces and make sure involved uids/gids are mappable in the current namespace. Note that checks without file ownership information will still not take user namespaces into account, as some of these should be handled via 'zfs allow' (otherwise root in a user namespace could issue commands such as `zpool export`). This also adds an initial user namespace regression test for the setgid bit loss, with a user_ns_exec helper usable in further tests. Additionally, configure checks for the required user namespace related features are added for: * ns_capable * kuid/kgid_has_mapping() * user_ns in cred_t Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com> Closes #6800 Closes #7270
2018-03-07 23:40:42 +00:00
AC_MSG_RESULT(yes)
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341 Conflicts: Makefile.am config/kernel-fpu.m4
2019-10-01 19:50:34 +00:00
AC_DEFINE(HAVE_CRED_USER_NS, 1, [cred_t->user_ns exists])
Take user namespaces into account in policy checks Change file related checks to use user namespaces and make sure involved uids/gids are mappable in the current namespace. Note that checks without file ownership information will still not take user namespaces into account, as some of these should be handled via 'zfs allow' (otherwise root in a user namespace could issue commands such as `zpool export`). This also adds an initial user namespace regression test for the setgid bit loss, with a user_ns_exec helper usable in further tests. Additionally, configure checks for the required user namespace related features are added for: * ns_capable * kuid/kgid_has_mapping() * user_ns in cred_t Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com> Closes #6800 Closes #7270
2018-03-07 23:40:42 +00:00
],[
AC_MSG_RESULT(no)
])
])
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 #
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341 Conflicts: Makefile.am config/kernel-fpu.m4
2019-10-01 19:50:34 +00:00
AC_DEFUN([ZFS_AC_KERNEL_SRC_KUID_HAS_MAPPING], [
ZFS_LINUX_TEST_SRC([kuid_has_mapping], [
Take user namespaces into account in policy checks Change file related checks to use user namespaces and make sure involved uids/gids are mappable in the current namespace. Note that checks without file ownership information will still not take user namespaces into account, as some of these should be handled via 'zfs allow' (otherwise root in a user namespace could issue commands such as `zpool export`). This also adds an initial user namespace regression test for the setgid bit loss, with a user_ns_exec helper usable in further tests. Additionally, configure checks for the required user namespace related features are added for: * ns_capable * kuid/kgid_has_mapping() * user_ns in cred_t Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com> Closes #6800 Closes #7270
2018-03-07 23:40:42 +00:00
#include <linux/uidgid.h>
],[
kuid_has_mapping((struct user_namespace *)NULL, KUIDT_INIT(0));
kgid_has_mapping((struct user_namespace *)NULL, KGIDT_INIT(0));
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341 Conflicts: Makefile.am config/kernel-fpu.m4
2019-10-01 19:50:34 +00:00
])
])
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], [
Take user namespaces into account in policy checks Change file related checks to use user namespaces and make sure involved uids/gids are mappable in the current namespace. Note that checks without file ownership information will still not take user namespaces into account, as some of these should be handled via 'zfs allow' (otherwise root in a user namespace could issue commands such as `zpool export`). This also adds an initial user namespace regression test for the setgid bit loss, with a user_ns_exec helper usable in further tests. Additionally, configure checks for the required user namespace related features are added for: * ns_capable * kuid/kgid_has_mapping() * user_ns in cred_t Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com> Closes #6800 Closes #7270
2018-03-07 23:40:42 +00:00
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_KUID_HAS_MAPPING, 1,
[kuid_has_mapping/kgid_has_mapping exist])
],[
AC_MSG_RESULT(no)
])
])
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341 Conflicts: Makefile.am config/kernel-fpu.m4
2019-10-01 19:50:34 +00:00
AC_DEFUN([ZFS_AC_KERNEL_SRC_USERNS_CAPABILITIES], [
ZFS_AC_KERNEL_SRC_NS_CAPABLE
ZFS_AC_KERNEL_SRC_CRED_USER_NS
ZFS_AC_KERNEL_SRC_KUID_HAS_MAPPING
])
Take user namespaces into account in policy checks Change file related checks to use user namespaces and make sure involved uids/gids are mappable in the current namespace. Note that checks without file ownership information will still not take user namespaces into account, as some of these should be handled via 'zfs allow' (otherwise root in a user namespace could issue commands such as `zpool export`). This also adds an initial user namespace regression test for the setgid bit loss, with a user_ns_exec helper usable in further tests. Additionally, configure checks for the required user namespace related features are added for: * ns_capable * kuid/kgid_has_mapping() * user_ns in cred_t Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com> Closes #6800 Closes #7270
2018-03-07 23:40:42 +00:00
AC_DEFUN([ZFS_AC_KERNEL_USERNS_CAPABILITIES], [
ZFS_AC_KERNEL_NS_CAPABLE
ZFS_AC_KERNEL_CRED_USER_NS
ZFS_AC_KERNEL_KUID_HAS_MAPPING
])