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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
		
			
				
	
	
		
			95 lines
		
	
	
		
			2.6 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
			
		
		
	
	
			95 lines
		
	
	
		
			2.6 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
dnl #
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dnl # Supported mkdir() interfaces checked newest to oldest.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_MKDIR], [
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	dnl #
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	dnl # 6.3 API change
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	dnl # mkdir() takes struct mnt_idmap * as the first arg
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	dnl #
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	ZFS_LINUX_TEST_SRC([mkdir_mnt_idmap], [
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		#include <linux/fs.h>
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		int mkdir(struct mnt_idmap *idmap,
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			struct inode *inode, struct dentry *dentry,
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			umode_t umode) { return 0; }
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		static const struct inode_operations
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		    iops __attribute__ ((unused)) = {
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			.mkdir = mkdir,
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		};
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	],[])
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	dnl #
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	dnl # 5.12 API change
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	dnl # The struct user_namespace arg was added as the first argument to
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	dnl # mkdir()
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	dnl #
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	ZFS_LINUX_TEST_SRC([mkdir_user_namespace], [
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		#include <linux/fs.h>
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		int mkdir(struct user_namespace *userns,
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			struct inode *inode, struct dentry *dentry,
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		    umode_t umode) { return 0; }
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		static const struct inode_operations
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		    iops __attribute__ ((unused)) = {
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			.mkdir = mkdir,
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		};
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	],[])
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	dnl #
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	dnl # 3.3 API change
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	dnl # The VFS .create, .mkdir and .mknod callbacks were updated to take a
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	dnl # umode_t type rather than an int.  The expectation is that any backport
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	dnl # would also change all three prototypes.  However, if it turns out that
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	dnl # some distribution doesn't backport the whole thing this could be
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	dnl # broken apart into three separate checks.
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	dnl #
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	ZFS_LINUX_TEST_SRC([inode_operations_mkdir], [
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		#include <linux/fs.h>
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		int mkdir(struct inode *inode, struct dentry *dentry,
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		    umode_t umode) { return 0; }
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		static const struct inode_operations
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		    iops __attribute__ ((unused)) = {
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			.mkdir = mkdir,
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		};
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	],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_MKDIR], [
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	dnl #
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	dnl # 6.3 API change
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	dnl # mkdir() takes struct mnt_idmap * as the first arg
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	dnl #
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	AC_MSG_CHECKING([whether iops->mkdir() takes struct mnt_idmap*])
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	ZFS_LINUX_TEST_RESULT([mkdir_mnt_idmap], [
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		AC_MSG_RESULT(yes)
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		AC_DEFINE(HAVE_IOPS_MKDIR_IDMAP, 1,
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		    [iops->mkdir() takes struct mnt_idmap*])
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	],[
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		dnl #
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		dnl # 5.12 API change
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		dnl # The struct user_namespace arg was added as the first argument to
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		dnl # mkdir() of the iops structure.
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		dnl #
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		AC_MSG_CHECKING([whether iops->mkdir() takes struct user_namespace*])
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		ZFS_LINUX_TEST_RESULT([mkdir_user_namespace], [
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			AC_MSG_RESULT(yes)
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			AC_DEFINE(HAVE_IOPS_MKDIR_USERNS, 1,
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			    [iops->mkdir() takes struct user_namespace*])
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		],[
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			AC_MSG_RESULT(no)
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			AC_MSG_CHECKING([whether iops->mkdir() takes umode_t])
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			ZFS_LINUX_TEST_RESULT([inode_operations_mkdir], [
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				AC_MSG_RESULT(yes)
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				AC_DEFINE(HAVE_MKDIR_UMODE_T, 1,
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				    [iops->mkdir() takes umode_t])
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			],[
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				ZFS_LINUX_TEST_ERROR([mkdir()])
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			])
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		])
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	])
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])
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