68 lines
1.6 KiB
Text
68 lines
1.6 KiB
Text
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dnl #
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dnl # 2.6.38 API change
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dnl # ns_capable() was introduced
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_NS_CAPABLE], [
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AC_MSG_CHECKING([whether ns_capable exists])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/capability.h>
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],[
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ns_capable((struct user_namespace *)NULL, CAP_SYS_ADMIN);
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_NS_CAPABLE, 1,
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[ns_capable 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 # 2.6.39 API change
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dnl # struct user_namespace was added to struct cred_t as
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dnl # cred->user_ns member
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dnl # Note that current_user_ns() was added in 2.6.28.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_CRED_USER_NS], [
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AC_MSG_CHECKING([whether cred_t->user_ns exists])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/cred.h>
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],[
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struct cred cr;
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cr.user_ns = (struct user_namespace *)NULL;
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_CRED_USER_NS, 1,
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[cred_t->user_ns 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 # 3.4 API change
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dnl # kuid_has_mapping() and kgid_has_mapping() were added to distinguish
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dnl # between internal kernel uids/gids and user namespace uids/gids.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_KUID_HAS_MAPPING], [
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AC_MSG_CHECKING([whether kuid_has_mapping/kgid_has_mapping exist])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/uidgid.h>
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],[
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kuid_has_mapping((struct user_namespace *)NULL, KUIDT_INIT(0));
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kgid_has_mapping((struct user_namespace *)NULL, KGIDT_INIT(0));
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_KUID_HAS_MAPPING, 1,
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[kuid_has_mapping/kgid_has_mapping exist])
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],[
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AC_MSG_RESULT(no)
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_USERNS_CAPABILITIES], [
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ZFS_AC_KERNEL_NS_CAPABLE
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ZFS_AC_KERNEL_CRED_USER_NS
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ZFS_AC_KERNEL_KUID_HAS_MAPPING
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])
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