1AC_DEFUN([ZFS_AC_KERNEL_SRC_RENAME], [ 2 dnl # 3 dnl # 3.9 (to 4.9) API change, 4 dnl # 5 dnl # A new version of iops->rename() was added (rename2) that takes a flag 6 dnl # argument (to support renameat2). However this separate function was 7 dnl # merged back into iops->rename() in Linux 4.9. 8 dnl # 9 ZFS_LINUX_TEST_SRC([inode_operations_rename2], [ 10 #include <linux/fs.h> 11 static int rename2_fn(struct inode *sip, struct dentry *sdp, 12 struct inode *tip, struct dentry *tdp, 13 unsigned int flags) { return 0; } 14 15 static const struct inode_operations 16 iops __attribute__ ((unused)) = { 17 .rename2 = rename2_fn, 18 }; 19 ],[]) 20 21 dnl # 22 dnl # 4.9 API change, 23 dnl # 24 dnl # iops->rename2() merged into iops->rename(), and iops->rename() now 25 dnl # wants flags. 26 dnl # 27 ZFS_LINUX_TEST_SRC([inode_operations_rename_flags], [ 28 #include <linux/fs.h> 29 static int rename_fn(struct inode *sip, struct dentry *sdp, 30 struct inode *tip, struct dentry *tdp, 31 unsigned int flags) { return 0; } 32 33 static const struct inode_operations 34 iops __attribute__ ((unused)) = { 35 .rename = rename_fn, 36 }; 37 ],[]) 38 39 dnl # 40 dnl # EL7 compatibility 41 dnl # 42 dnl # EL7 has backported renameat2 support, but it's done by defining a 43 dnl # separate iops wrapper structure that takes the .renameat2 function. 44 dnl # 45 ZFS_LINUX_TEST_SRC([dir_inode_operations_wrapper_rename2], [ 46 #include <linux/fs.h> 47 static int rename2_fn(struct inode *sip, struct dentry *sdp, 48 struct inode *tip, struct dentry *tdp, 49 unsigned int flags) { return 0; } 50 51 static const struct inode_operations_wrapper 52 iops __attribute__ ((unused)) = { 53 .rename2 = rename2_fn, 54 }; 55 ],[]) 56 57 dnl # 58 dnl # 5.12 API change, 59 dnl # 60 dnl # Linux 5.12 introduced passing struct user_namespace* as the first 61 dnl # argument of the rename() and other inode_operations members. 62 dnl # 63 ZFS_LINUX_TEST_SRC([inode_operations_rename_userns], [ 64 #include <linux/fs.h> 65 static int rename_fn(struct user_namespace *user_ns, struct inode *sip, 66 struct dentry *sdp, struct inode *tip, struct dentry *tdp, 67 unsigned int flags) { return 0; } 68 69 static const struct inode_operations 70 iops __attribute__ ((unused)) = { 71 .rename = rename_fn, 72 }; 73 ],[]) 74 75 dnl # 76 dnl # 6.3 API change - the first arg is now struct mnt_idmap* 77 dnl # 78 ZFS_LINUX_TEST_SRC([inode_operations_rename_mnt_idmap], [ 79 #include <linux/fs.h> 80 static int rename_fn(struct mnt_idmap *idmap, struct inode *sip, 81 struct dentry *sdp, struct inode *tip, struct dentry *tdp, 82 unsigned int flags) { return 0; } 83 84 static const struct inode_operations 85 iops __attribute__ ((unused)) = { 86 .rename = rename_fn, 87 }; 88 ],[]) 89]) 90 91AC_DEFUN([ZFS_AC_KERNEL_RENAME], [ 92 AC_MSG_CHECKING([whether iops->rename() takes struct mnt_idmap*]) 93 ZFS_LINUX_TEST_RESULT([inode_operations_rename_mnt_idmap], [ 94 AC_MSG_RESULT(yes) 95 AC_DEFINE(HAVE_IOPS_RENAME_IDMAP, 1, 96 [iops->rename() takes struct mnt_idmap*]) 97 ],[ 98 AC_MSG_CHECKING([whether iops->rename() takes struct user_namespace*]) 99 ZFS_LINUX_TEST_RESULT([inode_operations_rename_userns], [ 100 AC_MSG_RESULT(yes) 101 AC_DEFINE(HAVE_IOPS_RENAME_USERNS, 1, 102 [iops->rename() takes struct user_namespace*]) 103 ],[ 104 AC_MSG_RESULT(no) 105 106 AC_MSG_CHECKING([whether iops->rename2() exists]) 107 ZFS_LINUX_TEST_RESULT([inode_operations_rename2], [ 108 AC_MSG_RESULT(yes) 109 AC_DEFINE(HAVE_RENAME2, 1, [iops->rename2() exists]) 110 ],[ 111 AC_MSG_RESULT(no) 112 113 AC_MSG_CHECKING([whether iops->rename() wants flags]) 114 ZFS_LINUX_TEST_RESULT([inode_operations_rename_flags], [ 115 AC_MSG_RESULT(yes) 116 AC_DEFINE(HAVE_RENAME_WANTS_FLAGS, 1, 117 [iops->rename() wants flags]) 118 ],[ 119 AC_MSG_RESULT(no) 120 121 AC_MSG_CHECKING([whether struct inode_operations_wrapper takes .rename2()]) 122 ZFS_LINUX_TEST_RESULT([dir_inode_operations_wrapper_rename2], [ 123 AC_MSG_RESULT(yes) 124 AC_DEFINE(HAVE_RENAME2_OPERATIONS_WRAPPER, 1, 125 [struct inode_operations_wrapper takes .rename2()]) 126 ],[ 127 AC_MSG_RESULT(no) 128 ]) 129 ]) 130 ]) 131 ]) 132 ]) 133]) 134