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	Linux kernel 6.3 changed a bunch of APIs to use the dedicated idmap type for mounts (struct mnt_idmap), we need to detect these changes and make zfs work with the new APIs. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Youzhong Yang <yyang@mathworks.com> Closes #14682
		
			
				
	
	
		
			87 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
			
		
		
	
	
			87 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
dnl #
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dnl # 3.11 API change
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dnl # Add support for i_op->tmpfile
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_TMPFILE], [
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	dnl #
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	dnl # 6.3 API change
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	dnl # The first arg is now struct mnt_idmap * 
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	dnl #
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	ZFS_LINUX_TEST_SRC([inode_operations_tmpfile_mnt_idmap], [
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		#include <linux/fs.h>
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		int tmpfile(struct mnt_idmap *idmap,
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		    struct inode *inode, struct file *file,
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		    umode_t mode) { return 0; }
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		static struct inode_operations
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		    iops __attribute__ ((unused)) = {
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			.tmpfile = tmpfile,
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		};
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	],[])
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	dnl # 6.1 API change
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	dnl # use struct file instead of struct dentry
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	dnl #
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	ZFS_LINUX_TEST_SRC([inode_operations_tmpfile], [
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		#include <linux/fs.h>
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		int tmpfile(struct user_namespace *userns,
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		    struct inode *inode, struct file *file,
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		    umode_t mode) { return 0; }
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		static struct inode_operations
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		    iops __attribute__ ((unused)) = {
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			.tmpfile = tmpfile,
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		};
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	],[])
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	dnl #
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	dnl # 5.11 API change
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	dnl # add support for userns parameter to tmpfile
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	dnl #
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	ZFS_LINUX_TEST_SRC([inode_operations_tmpfile_dentry_userns], [
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		#include <linux/fs.h>
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		int tmpfile(struct user_namespace *userns,
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		    struct inode *inode, struct dentry *dentry,
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		    umode_t mode) { return 0; }
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		static struct inode_operations
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		    iops __attribute__ ((unused)) = {
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			.tmpfile = tmpfile,
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		};
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	],[])
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	ZFS_LINUX_TEST_SRC([inode_operations_tmpfile_dentry], [
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			#include <linux/fs.h>
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			int tmpfile(struct inode *inode, struct dentry *dentry,
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			    umode_t mode) { return 0; }
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			static struct inode_operations
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			    iops __attribute__ ((unused)) = {
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				.tmpfile = tmpfile,
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			};
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	],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_TMPFILE], [
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	AC_MSG_CHECKING([whether i_op->tmpfile() exists])
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	ZFS_LINUX_TEST_RESULT([inode_operations_tmpfile_mnt_idmap], [
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		AC_MSG_RESULT(yes)
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		AC_DEFINE(HAVE_TMPFILE, 1, [i_op->tmpfile() exists])
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		AC_DEFINE(HAVE_TMPFILE_IDMAP, 1, [i_op->tmpfile() has mnt_idmap])
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	], [
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		ZFS_LINUX_TEST_RESULT([inode_operations_tmpfile], [
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			AC_MSG_RESULT(yes)
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			AC_DEFINE(HAVE_TMPFILE, 1, [i_op->tmpfile() exists])
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			AC_DEFINE(HAVE_TMPFILE_USERNS, 1, [i_op->tmpfile() has userns])
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		],[
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			ZFS_LINUX_TEST_RESULT([inode_operations_tmpfile_dentry_userns], [
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				AC_MSG_RESULT(yes)
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				AC_DEFINE(HAVE_TMPFILE, 1, [i_op->tmpfile() exists])
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				AC_DEFINE(HAVE_TMPFILE_USERNS, 1, [i_op->tmpfile() has userns])
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				AC_DEFINE(HAVE_TMPFILE_DENTRY, 1, [i_op->tmpfile() uses old dentry signature])
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			],[
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				ZFS_LINUX_TEST_RESULT([inode_operations_tmpfile_dentry], [
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					AC_MSG_RESULT(yes)
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					AC_DEFINE(HAVE_TMPFILE, 1, [i_op->tmpfile() exists])
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					AC_DEFINE(HAVE_TMPFILE_DENTRY, 1, [i_op->tmpfile() uses old dentry signature])
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				],[
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					ZFS_LINUX_REQUIRE_API([i_op->tmpfile()], [3.11])
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				])
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			])
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		])
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	])
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])
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