29 lines
763 B
Text
29 lines
763 B
Text
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dnl #
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dnl # User namespaces, use kuid_t in place of uid_t
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dnl # where available. Not strictly a user namespaces thing
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dnl # but it should prevent surprises
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_KUIDGID_T], [
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AC_MSG_CHECKING([whether kuid_t/kgid_t is available])
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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_t userid __attribute__ ((unused)) = KUIDT_INIT(0);
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kgid_t groupid __attribute__ ((unused)) = KGIDT_INIT(0);
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],[
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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_t userid __attribute__ ((unused)) = 0;
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kgid_t groupid __attribute__ ((unused)) = 0;
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],[
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AC_MSG_RESULT(yes; optional)
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],[
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AC_MSG_RESULT(yes; mandatory)
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AC_DEFINE(HAVE_KUIDGID_T, 1, [kuid_t/kgid_t in use])
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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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