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48ef8ba0 BB |
1 | dnl # |
2 | dnl # User namespaces, use kuid_t in place of uid_t | |
3 | dnl # where available. Not strictly a user namespaces thing | |
4 | dnl # but it should prevent surprises | |
5 | dnl # | |
93ce2b4c | 6 | AC_DEFUN([ZFS_AC_KERNEL_KUIDGID_T], [ |
48ef8ba0 | 7 | AC_MSG_CHECKING([whether kuid_t/kgid_t is available]) |
93ce2b4c | 8 | ZFS_LINUX_TRY_COMPILE([ |
48ef8ba0 BB |
9 | #include <linux/uidgid.h> |
10 | ], [ | |
93ce2b4c BB |
11 | kuid_t userid __attribute__ ((unused)) = KUIDT_INIT(0); |
12 | kgid_t groupid __attribute__ ((unused)) = KGIDT_INIT(0); | |
48ef8ba0 | 13 | ],[ |
93ce2b4c | 14 | ZFS_LINUX_TRY_COMPILE([ |
48ef8ba0 BB |
15 | #include <linux/uidgid.h> |
16 | ], [ | |
93ce2b4c BB |
17 | kuid_t userid __attribute__ ((unused)) = 0; |
18 | kgid_t groupid __attribute__ ((unused)) = 0; | |
48ef8ba0 BB |
19 | ],[ |
20 | AC_MSG_RESULT(yes; optional) | |
21 | ],[ | |
22 | AC_MSG_RESULT(yes; mandatory) | |
23 | AC_DEFINE(HAVE_KUIDGID_T, 1, [kuid_t/kgid_t in use]) | |
24 | ]) | |
25 | ],[ | |
26 | AC_MSG_RESULT(no) | |
27 | ]) | |
28 | ]) |