1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
AC_DEFUN([ZFS_AC_KERNEL_SRC_RENAME], [
dnl #
dnl # 3.9 (to 4.9) API change,
dnl #
dnl # A new version of iops->rename() was added (rename2) that takes a flag
dnl # argument (to support renameat2). However this separate function was
dnl # merged back into iops->rename() in Linux 4.9.
dnl #
ZFS_LINUX_TEST_SRC([inode_operations_rename2], [
#include <linux/fs.h>
static int rename2_fn(struct inode *sip, struct dentry *sdp,
struct inode *tip, struct dentry *tdp,
unsigned int flags) { return 0; }
static const struct inode_operations
iops __attribute__ ((unused)) = {
.rename2 = rename2_fn,
};
],[])
dnl #
dnl # 4.9 API change,
dnl #
dnl # iops->rename2() merged into iops->rename(), and iops->rename() now
dnl # wants flags.
dnl #
ZFS_LINUX_TEST_SRC([inode_operations_rename_flags], [
#include <linux/fs.h>
static int rename_fn(struct inode *sip, struct dentry *sdp,
struct inode *tip, struct dentry *tdp,
unsigned int flags) { return 0; }
static const struct inode_operations
iops __attribute__ ((unused)) = {
.rename = rename_fn,
};
],[])
dnl #
dnl # EL7 compatibility
dnl #
dnl # EL7 has backported renameat2 support, but it's done by defining a
dnl # separate iops wrapper structure that takes the .renameat2 function.
dnl #
ZFS_LINUX_TEST_SRC([dir_inode_operations_wrapper_rename2], [
#include <linux/fs.h>
static int rename2_fn(struct inode *sip, struct dentry *sdp,
struct inode *tip, struct dentry *tdp,
unsigned int flags) { return 0; }
static const struct inode_operations_wrapper
iops __attribute__ ((unused)) = {
.rename2 = rename2_fn,
};
],[])
dnl #
dnl # 5.12 API change,
dnl #
dnl # Linux 5.12 introduced passing struct user_namespace* as the first
dnl # argument of the rename() and other inode_operations members.
dnl #
ZFS_LINUX_TEST_SRC([inode_operations_rename_userns], [
#include <linux/fs.h>
static int rename_fn(struct user_namespace *user_ns, struct inode *sip,
struct dentry *sdp, struct inode *tip, struct dentry *tdp,
unsigned int flags) { return 0; }
static const struct inode_operations
iops __attribute__ ((unused)) = {
.rename = rename_fn,
};
],[])
dnl #
dnl # 6.3 API change - the first arg is now struct mnt_idmap*
dnl #
ZFS_LINUX_TEST_SRC([inode_operations_rename_mnt_idmap], [
#include <linux/fs.h>
static int rename_fn(struct mnt_idmap *idmap, struct inode *sip,
struct dentry *sdp, struct inode *tip, struct dentry *tdp,
unsigned int flags) { return 0; }
static const struct inode_operations
iops __attribute__ ((unused)) = {
.rename = rename_fn,
};
],[])
])
AC_DEFUN([ZFS_AC_KERNEL_RENAME], [
AC_MSG_CHECKING([whether iops->rename() takes struct mnt_idmap*])
ZFS_LINUX_TEST_RESULT([inode_operations_rename_mnt_idmap], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_IOPS_RENAME_IDMAP, 1,
[iops->rename() takes struct mnt_idmap*])
],[
AC_MSG_CHECKING([whether iops->rename() takes struct user_namespace*])
ZFS_LINUX_TEST_RESULT([inode_operations_rename_userns], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_IOPS_RENAME_USERNS, 1,
[iops->rename() takes struct user_namespace*])
],[
AC_MSG_RESULT(no)
AC_MSG_CHECKING([whether iops->rename2() exists])
ZFS_LINUX_TEST_RESULT([inode_operations_rename2], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_RENAME2, 1, [iops->rename2() exists])
],[
AC_MSG_RESULT(no)
AC_MSG_CHECKING([whether iops->rename() wants flags])
ZFS_LINUX_TEST_RESULT([inode_operations_rename_flags], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_RENAME_WANTS_FLAGS, 1,
[iops->rename() wants flags])
],[
AC_MSG_RESULT(no)
AC_MSG_CHECKING([whether struct inode_operations_wrapper takes .rename2()])
ZFS_LINUX_TEST_RESULT([dir_inode_operations_wrapper_rename2], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_RENAME2_OPERATIONS_WRAPPER, 1,
[struct inode_operations_wrapper takes .rename2()])
],[
AC_MSG_RESULT(no)
])
])
])
])
])
])
|
