diff options
Diffstat (limited to 'config/kernel-userns-capabilities.m4')
| -rw-r--r-- | config/kernel-userns-capabilities.m4 | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/config/kernel-userns-capabilities.m4 b/config/kernel-userns-capabilities.m4 new file mode 100644 index 000000000000..026503623a2b --- /dev/null +++ b/config/kernel-userns-capabilities.m4 @@ -0,0 +1,106 @@ +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 +]) |