From 768bfd4348d757f7c468eafa223702c094dc7008 Mon Sep 17 00:00:00 2001
From: jhb <jhb@FreeBSD.org>
Date: Mon, 30 Mar 2020 21:44:00 +0000
Subject: [PATCH] Document EINTEGRITY errors for many system calls.

EINTEGRITY was previously documented as a UFS-specific error for
mount(2).  This documents EINTEGRITY as a filesystem-independent error
that may be reported by the backing store of a filesystem.

While here, document EIO as a filesystem-independent error for both
mount(2) and posix_fadvise(2).  EIO was previously only documented for
UFS for mount(2).

Reviewed by:	mckusick
Suggested by:	mckusick
MFC after:	2 weeks
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D24168
---
 lib/libc/sys/access.2                | 4 +++-
 lib/libc/sys/acct.2                  | 4 +++-
 lib/libc/sys/bind.2                  | 4 +++-
 lib/libc/sys/chdir.2                 | 4 +++-
 lib/libc/sys/chflags.2               | 6 +++++-
 lib/libc/sys/chmod.2                 | 6 +++++-
 lib/libc/sys/chown.2                 | 6 +++++-
 lib/libc/sys/chroot.2                | 4 +++-
 lib/libc/sys/copy_file_range.2       | 4 +++-
 lib/libc/sys/execve.2                | 4 +++-
 lib/libc/sys/fhlink.2                | 4 +++-
 lib/libc/sys/fhreadlink.2            | 4 +++-
 lib/libc/sys/fsync.2                 | 4 +++-
 lib/libc/sys/getdirentries.2         | 4 +++-
 lib/libc/sys/getfh.2                 | 4 +++-
 lib/libc/sys/getfsstat.2             | 4 +++-
 lib/libc/sys/ktrace.2                | 4 +++-
 lib/libc/sys/link.2                  | 4 +++-
 lib/libc/sys/mkdir.2                 | 4 +++-
 lib/libc/sys/mkfifo.2                | 4 +++-
 lib/libc/sys/mknod.2                 | 4 +++-
 lib/libc/sys/mount.2                 | 9 ++++++++-
 lib/libc/sys/open.2                  | 4 +++-
 lib/libc/sys/pathconf.2              | 6 +++++-
 lib/libc/sys/posix_fadvise.2         | 6 +++++-
 lib/libc/sys/posix_fallocate.2       | 4 +++-
 lib/libc/sys/quotactl.2              | 4 +++-
 lib/libc/sys/read.2                  | 4 +++-
 lib/libc/sys/readlink.2              | 4 +++-
 lib/libc/sys/rename.2                | 4 +++-
 lib/libc/sys/rmdir.2                 | 4 +++-
 lib/libc/sys/sendfile.2              | 5 ++++-
 lib/libc/sys/stat.2                  | 6 +++++-
 lib/libc/sys/statfs.2                | 6 +++++-
 lib/libc/sys/swapon.2                | 5 ++++-
 lib/libc/sys/symlink.2               | 4 +++-
 lib/libc/sys/truncate.2              | 4 +++-
 lib/libc/sys/undelete.2              | 4 +++-
 lib/libc/sys/unlink.2                | 4 +++-
 lib/libc/sys/utimensat.2             | 4 +++-
 lib/libc/sys/utimes.2                | 4 +++-
 lib/libc/sys/write.2                 | 8 +++++++-
 share/man/man9/VOP_COPY_FILE_RANGE.9 | 4 +++-
 share/man/man9/VOP_READDIR.9         | 4 +++-
 share/man/man9/VOP_READLINK.9        | 4 +++-
 share/man/man9/g_data.9              | 4 +++-
 46 files changed, 163 insertions(+), 46 deletions(-)

diff --git a/lib/libc/sys/access.2 b/lib/libc/sys/access.2
index 0001d99941b6..4ab31d3a99e8 100644
--- a/lib/libc/sys/access.2
+++ b/lib/libc/sys/access.2
@@ -28,7 +28,7 @@
 .\"     @(#)access.2	8.2 (Berkeley) 4/1/94
 .\" $FreeBSD$
 .\"
-.Dd November 11, 2018
+.Dd March 30, 2020
 .Dt ACCESS 2
 .Os
 .Sh NAME
@@ -175,6 +175,8 @@ argument
 points outside the process's allocated address space.
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .El
 .Pp
 Also, the
diff --git a/lib/libc/sys/acct.2 b/lib/libc/sys/acct.2
index dfa241d1e45a..43a48972ee8d 100644
--- a/lib/libc/sys/acct.2
+++ b/lib/libc/sys/acct.2
@@ -28,7 +28,7 @@
 .\"     @(#)acct.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd April 17, 2004
+.Dd March 30, 2020
 .Dt ACCT 2
 .Os
 .Sh NAME
@@ -119,6 +119,8 @@ argument
 points outside the process's allocated address space.
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .El
 .Sh SEE ALSO
 .Xr acct 5 ,
diff --git a/lib/libc/sys/bind.2 b/lib/libc/sys/bind.2
index f630715f1cf1..05e462a17462 100644
--- a/lib/libc/sys/bind.2
+++ b/lib/libc/sys/bind.2
@@ -28,7 +28,7 @@
 .\"     @(#)bind.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd August 18, 2016
+.Dd March 30, 2020
 .Dt BIND 2
 .Os
 .Sh NAME
@@ -122,6 +122,8 @@ A prefix component of the path name does not exist.
 Too many symbolic links were encountered in translating the pathname.
 .It Bq Er EIO
 An I/O error occurred while making the directory entry or allocating the inode.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EROFS
 The name would reside on a read-only file system.
 .It Bq Er EISDIR
diff --git a/lib/libc/sys/chdir.2 b/lib/libc/sys/chdir.2
index b0c7f021d9b6..acc3b601f009 100644
--- a/lib/libc/sys/chdir.2
+++ b/lib/libc/sys/chdir.2
@@ -28,7 +28,7 @@
 .\"     @(#)chdir.2	8.2 (Berkeley) 12/11/93
 .\" $FreeBSD$
 .\"
-.Dd December 1, 2017
+.Dd March 30, 2020
 .Dt CHDIR 2
 .Os
 .Sh NAME
@@ -96,6 +96,8 @@ argument
 points outside the process's allocated address space.
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .El
 .Pp
 The
diff --git a/lib/libc/sys/chflags.2 b/lib/libc/sys/chflags.2
index 7db10569ea31..2b8ca12950b5 100644
--- a/lib/libc/sys/chflags.2
+++ b/lib/libc/sys/chflags.2
@@ -28,7 +28,7 @@
 .\"	@(#)chflags.2	8.3 (Berkeley) 5/2/95
 .\" $FreeBSD$
 .\"
-.Dd November 11, 2018
+.Dd March 30, 2020
 .Dt CHFLAGS 2
 .Os
 .Sh NAME
@@ -264,6 +264,8 @@ points outside the process's allocated address space.
 An
 .Tn I/O
 error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EOPNOTSUPP
 The underlying file system does not support file flags, or
 does not support all of the flags set in
@@ -306,6 +308,8 @@ The file resides on a read-only file system.
 An
 .Tn I/O
 error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EOPNOTSUPP
 The underlying file system does not support file flags, or
 does not support all of the flags set in
diff --git a/lib/libc/sys/chmod.2 b/lib/libc/sys/chmod.2
index aef920ee6fef..2f1b6afbb837 100644
--- a/lib/libc/sys/chmod.2
+++ b/lib/libc/sys/chmod.2
@@ -28,7 +28,7 @@
 .\"     @(#)chmod.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd November 11, 2018
+.Dd March 30, 2020
 .Dt CHMOD 2
 .Os
 .Sh NAME
@@ -244,6 +244,8 @@ argument
 points outside the process's allocated address space.
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EFTYPE
 The effective user ID is not the super-user, the mode includes the sticky bit
 .Dv ( S_ISVTX ) ,
@@ -265,6 +267,8 @@ refers to a socket, not to a file.
 The file resides on a read-only file system.
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .El
 .Pp
 In addition to the
diff --git a/lib/libc/sys/chown.2 b/lib/libc/sys/chown.2
index 7eb8322c77d8..9c571e76e83f 100644
--- a/lib/libc/sys/chown.2
+++ b/lib/libc/sys/chown.2
@@ -28,7 +28,7 @@
 .\"     @(#)chown.2	8.4 (Berkeley) 4/19/94
 .\" $FreeBSD$
 .\"
-.Dd November 11, 2018
+.Dd March 30, 2020
 .Dt CHOWN 2
 .Os
 .Sh NAME
@@ -183,6 +183,8 @@ argument
 points outside the process's allocated address space.
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .El
 .Pp
 The
@@ -205,6 +207,8 @@ The effective user ID is not the super-user.
 The named file resides on a read-only file system.
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .El
 .Pp
 In addition to the errors specified for
diff --git a/lib/libc/sys/chroot.2 b/lib/libc/sys/chroot.2
index bcc3faf09eed..4fd2c40e634d 100644
--- a/lib/libc/sys/chroot.2
+++ b/lib/libc/sys/chroot.2
@@ -28,7 +28,7 @@
 .\"     @(#)chroot.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd January 3, 2012
+.Dd March 30, 2020
 .Dt CHROOT 2
 .Os
 .Sh NAME
@@ -121,6 +121,8 @@ argument
 points outside the process's allocated address space.
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .El
 .Sh SEE ALSO
 .Xr chdir 2 ,
diff --git a/lib/libc/sys/copy_file_range.2 b/lib/libc/sys/copy_file_range.2
index 1d26b039ea26..2f42c78b57f5 100644
--- a/lib/libc/sys/copy_file_range.2
+++ b/lib/libc/sys/copy_file_range.2
@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd November 9, 2019
+.Dd March 30, 2020
 .Dt COPY_FILE_RANGE 2
 .Os
 .Sh NAME
@@ -180,6 +180,8 @@ flags
 is not zero.
 .It Bq Er EIO
 An I/O error occurred while reading/writing the files.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from a file system.
 .It Bq Er EISDIR
 If either
 .Fa infd
diff --git a/lib/libc/sys/execve.2 b/lib/libc/sys/execve.2
index ecebd9755f8d..5c5b07b30e35 100644
--- a/lib/libc/sys/execve.2
+++ b/lib/libc/sys/execve.2
@@ -28,7 +28,7 @@
 .\"     @(#)execve.2	8.5 (Berkeley) 6/1/94
 .\" $FreeBSD$
 .\"
-.Dd September 21, 2010
+.Dd March 30, 2020
 .Dt EXECVE 2
 .Os
 .Sh NAME
@@ -304,6 +304,8 @@ point
 to an illegal address.
 .It Bq Er EIO
 An I/O error occurred while reading from the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .El
 .Pp
 In addition, the
diff --git a/lib/libc/sys/fhlink.2 b/lib/libc/sys/fhlink.2
index d15ffb628ce8..db4ccf6fe403 100644
--- a/lib/libc/sys/fhlink.2
+++ b/lib/libc/sys/fhlink.2
@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd November 29, 2018
+.Dd March 30, 2020
 .Dt FHLINK 2
 .Os
 .Sh NAME
@@ -219,6 +219,8 @@ containing the directory has been exhausted.
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to
 the file system to make the directory entry.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EROFS
 The requested link requires writing in a directory on a read-only file
 system.
diff --git a/lib/libc/sys/fhreadlink.2 b/lib/libc/sys/fhreadlink.2
index 599db0985eb3..2837fd593d84 100644
--- a/lib/libc/sys/fhreadlink.2
+++ b/lib/libc/sys/fhreadlink.2
@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd November 29, 2018
+.Dd March 30, 2020
 .Dt FHREADLINK 2
 .Os
 .Sh NAME
@@ -76,6 +76,8 @@ Too many symbolic links were encountered in translating the file handle
 The named file is not a symbolic link.
 .It Bq Er EIO
 An I/O error occurred while reading from the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EFAULT
 The
 .Fa buf
diff --git a/lib/libc/sys/fsync.2 b/lib/libc/sys/fsync.2
index e06617365060..540e02b78493 100644
--- a/lib/libc/sys/fsync.2
+++ b/lib/libc/sys/fsync.2
@@ -34,7 +34,7 @@
 .\"     @(#)fsync.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd February 6, 2018
+.Dd March 30, 2020
 .Dt FSYNC 2
 .Os
 .Sh NAME
@@ -107,6 +107,8 @@ argument
 refers to a socket, not to a file.
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .El
 .Sh SEE ALSO
 .Xr fsync 1 ,
diff --git a/lib/libc/sys/getdirentries.2 b/lib/libc/sys/getdirentries.2
index 2951f553ea09..f2d1c05240d5 100644
--- a/lib/libc/sys/getdirentries.2
+++ b/lib/libc/sys/getdirentries.2
@@ -28,7 +28,7 @@
 .\"	@(#)getdirentries.2	8.2 (Berkeley) 5/3/95
 .\" $FreeBSD$
 .\"
-.Dd Nov 14, 2018
+.Dd March 30, 2020
 .Dt GETDIRENTRIES 2
 .Os
 .Sh NAME
@@ -189,6 +189,8 @@ or the current position pointer is invalid.
 An
 .Tn I/O
 error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .El
 .Sh SEE ALSO
 .Xr lseek 2 ,
diff --git a/lib/libc/sys/getfh.2 b/lib/libc/sys/getfh.2
index 0f17927ba7d6..d6318cdd1aa4 100644
--- a/lib/libc/sys/getfh.2
+++ b/lib/libc/sys/getfh.2
@@ -29,7 +29,7 @@
 .\"	@(#)getfh.2	8.1 (Berkeley) 6/9/93
 .\" $FreeBSD$
 .\"
-.Dd December 11, 2018
+.Dd March 30, 2020
 .Dt GETFH 2
 .Os
 .Sh NAME
@@ -192,6 +192,8 @@ points to an invalid address.
 An
 .Tn I/O
 error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er ESTALE
 The file handle
 .Fa fhp
diff --git a/lib/libc/sys/getfsstat.2 b/lib/libc/sys/getfsstat.2
index ad9657577887..1f5b52b69916 100644
--- a/lib/libc/sys/getfsstat.2
+++ b/lib/libc/sys/getfsstat.2
@@ -28,7 +28,7 @@
 .\"	@(#)getfsstat.2	8.3 (Berkeley) 5/25/95
 .\" $FreeBSD$
 .\"
-.Dd December 27, 2016
+.Dd March 30, 2020
 .Dt GETFSSTAT 2
 .Os
 .Sh NAME
@@ -118,6 +118,8 @@ or
 An
 .Tn I/O
 error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .El
 .Sh SEE ALSO
 .Xr statfs 2 ,
diff --git a/lib/libc/sys/ktrace.2 b/lib/libc/sys/ktrace.2
index 532c885f4226..ffe967e35ed8 100644
--- a/lib/libc/sys/ktrace.2
+++ b/lib/libc/sys/ktrace.2
@@ -28,7 +28,7 @@
 .\"     @(#)ktrace.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd March 31, 2016
+.Dd March 30, 2020
 .Dt KTRACE 2
 .Os
 .Sh NAME
@@ -177,6 +177,8 @@ Search permission is denied for a component of the path prefix.
 Too many symbolic links were encountered in translating the pathname.
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er ENOSYS
 The kernel was not compiled with
 .Nm
diff --git a/lib/libc/sys/link.2 b/lib/libc/sys/link.2
index 3c6e32b3e9a5..e46de86a01d2 100644
--- a/lib/libc/sys/link.2
+++ b/lib/libc/sys/link.2
@@ -28,7 +28,7 @@
 .\"     @(#)link.2	8.3 (Berkeley) 1/12/94
 .\" $FreeBSD$
 .\"
-.Dd November 11, 2018
+.Dd March 30, 2020
 .Dt LINK 2
 .Os
 .Sh NAME
@@ -222,6 +222,8 @@ containing the directory has been exhausted.
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to
 the file system to make the directory entry.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EROFS
 The requested link requires writing in a directory on a read-only file
 system.
diff --git a/lib/libc/sys/mkdir.2 b/lib/libc/sys/mkdir.2
index c2c92656723c..b926705c2f17 100644
--- a/lib/libc/sys/mkdir.2
+++ b/lib/libc/sys/mkdir.2
@@ -28,7 +28,7 @@
 .\"     @(#)mkdir.2	8.2 (Berkeley) 12/11/93
 .\" $FreeBSD$
 .\"
-.Dd June 26, 2008
+.Dd March 30, 2020
 .Dt MKDIR 2
 .Os
 .Sh NAME
@@ -126,6 +126,8 @@ which the directory is being created has been exhausted.
 An I/O error occurred while making the directory entry or allocating the inode.
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EFAULT
 The
 .Fa path
diff --git a/lib/libc/sys/mkfifo.2 b/lib/libc/sys/mkfifo.2
index 6ab30af1484e..f9a306e1a839 100644
--- a/lib/libc/sys/mkfifo.2
+++ b/lib/libc/sys/mkfifo.2
@@ -28,7 +28,7 @@
 .\"	@(#)mkfifo.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd April 10, 2008
+.Dd March 30, 2020
 .Dt MKFIFO 2
 .Os
 .Sh NAME
@@ -134,6 +134,8 @@ error occurred while making the directory entry or allocating the inode.
 An
 .Tn I/O
 error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EFAULT
 The
 .Fa path
diff --git a/lib/libc/sys/mknod.2 b/lib/libc/sys/mknod.2
index 8fd504dec8ed..08117c511936 100644
--- a/lib/libc/sys/mknod.2
+++ b/lib/libc/sys/mknod.2
@@ -28,7 +28,7 @@
 .\"     @(#)mknod.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd December 1, 2017
+.Dd March 30, 2020
 .Dt MKNOD 2
 .Os
 .Sh NAME
@@ -108,6 +108,8 @@ Too many symbolic links were encountered in translating the pathname.
 The process's effective user ID is not super-user.
 .It Bq Er EIO
 An I/O error occurred while making the directory entry or allocating the inode.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er ENOSPC
 The directory in which the entry for the new node is being placed
 cannot be extended because there is no space left on the file
diff --git a/lib/libc/sys/mount.2 b/lib/libc/sys/mount.2
index aea89e38c179..0d25cca3f10f 100644
--- a/lib/libc/sys/mount.2
+++ b/lib/libc/sys/mount.2
@@ -28,7 +28,7 @@
 .\"     @(#)mount.2	8.3 (Berkeley) 5/24/95
 .\" $FreeBSD$
 .\"
-.Dd August 28, 2019
+.Dd March 30, 2020
 .Dt MOUNT 2
 .Os
 .Sh NAME
@@ -274,6 +274,13 @@ The
 .Fa dir
 argument
 points outside the process's allocated address space.
+.It Bq Er EIO
+An I/O error occurred while reading data from
+.Fa special .
+.It Bq Er EINTEGRITY
+The backing store for
+.Fa special
+detected corrupted data while reading.
 .El
 .Pp
 The following errors can occur for a
diff --git a/lib/libc/sys/open.2 b/lib/libc/sys/open.2
index 59397d76be70..c1bd88ec9d14 100644
--- a/lib/libc/sys/open.2
+++ b/lib/libc/sys/open.2
@@ -28,7 +28,7 @@
 .\"     @(#)open.2	8.2 (Berkeley) 11/16/93
 .\" $FreeBSD$
 .\"
-.Dd January 31, 2020
+.Dd March 30, 2020
 .Dt OPEN 2
 .Os
 .Sh NAME
@@ -510,6 +510,8 @@ which the file is being created has been exhausted.
 An I/O error occurred while making the directory entry or
 allocating the inode for
 .Dv O_CREAT .
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er ETXTBSY
 The file is a pure procedure (shared text) file that is being
 executed and the
diff --git a/lib/libc/sys/pathconf.2 b/lib/libc/sys/pathconf.2
index 4a4789069b51..62ec532705ef 100644
--- a/lib/libc/sys/pathconf.2
+++ b/lib/libc/sys/pathconf.2
@@ -28,7 +28,7 @@
 .\"	@(#)pathconf.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd July 7, 2009
+.Dd March 30, 2020
 .Dt PATHCONF 2
 .Os
 .Sh NAME
@@ -230,6 +230,8 @@ Search permission is denied for a component of the path prefix.
 Too many symbolic links were encountered in translating the pathname.
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .El
 .Pp
 The
@@ -244,6 +246,8 @@ argument
 is not a valid open file descriptor.
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .El
 .Sh SEE ALSO
 .Xr lseek 2 ,
diff --git a/lib/libc/sys/posix_fadvise.2 b/lib/libc/sys/posix_fadvise.2
index ac2bb73fdb92..0e4d25ac4c55 100644
--- a/lib/libc/sys/posix_fadvise.2
+++ b/lib/libc/sys/posix_fadvise.2
@@ -28,7 +28,7 @@
 .\"	@(#)madvise.2	8.1 (Berkeley) 6/9/93
 .\" $FreeBSD$
 .\"
-.Dd October 3, 2015
+.Dd March 30, 2020
 .Dt POSIX_FADVISE 2
 .Os
 .Sh NAME
@@ -124,6 +124,10 @@ argument does not refer to a regular file.
 The
 .Fa fd
 argument is associated with a pipe or FIFO.
+.It Bq Er EIO
+An I/O error occurred while reading from or writing to a file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .El
 .Sh SEE ALSO
 .Xr madvise 2
diff --git a/lib/libc/sys/posix_fallocate.2 b/lib/libc/sys/posix_fallocate.2
index b61f8a48c394..ddf8aeb750fb 100644
--- a/lib/libc/sys/posix_fallocate.2
+++ b/lib/libc/sys/posix_fallocate.2
@@ -28,7 +28,7 @@
 .\"     @(#)open.2	8.2 (Berkeley) 11/16/93
 .\" $FreeBSD$
 .\"
-.Dd January 5, 2020
+.Dd March 30, 2020
 .Dt POSIX_FALLOCATE 2
 .Os
 .Sh NAME
@@ -112,6 +112,8 @@ argument was less than zero,
 or the operation is not supported by the file system.
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to a file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er ENODEV
 The
 .Fa fd
diff --git a/lib/libc/sys/quotactl.2 b/lib/libc/sys/quotactl.2
index f93090b0df4f..0ab87324575d 100644
--- a/lib/libc/sys/quotactl.2
+++ b/lib/libc/sys/quotactl.2
@@ -31,7 +31,7 @@
 .\"	@(#)quotactl.2	8.2 (Berkeley) 3/10/95
 .\" $FreeBSD$
 .\"
-.Dd March 5, 1999
+.Dd March 30, 2020
 .Dt QUOTACTL 2
 .Os
 .Sh NAME
@@ -228,6 +228,8 @@ An
 .Tn I/O
 error occurred while reading from or writing
 to a file containing quotas.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EFAULT
 An invalid
 .Fa addr
diff --git a/lib/libc/sys/read.2 b/lib/libc/sys/read.2
index de60c6232392..cc11f3cd440a 100644
--- a/lib/libc/sys/read.2
+++ b/lib/libc/sys/read.2
@@ -28,7 +28,7 @@
 .\"     @(#)read.2	8.4 (Berkeley) 2/26/94
 .\" $FreeBSD$
 .\"
-.Dd July 6, 2019
+.Dd March 30, 2020
 .Dt READ 2
 .Os
 .Sh NAME
@@ -182,6 +182,8 @@ argument
 points outside the allocated address space.
 .It Bq Er EIO
 An I/O error occurred while reading from the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EBUSY
 Failed to read from a file, e.g. /proc/<pid>/regs while <pid> is not stopped
 .It Bq Er EINTR
diff --git a/lib/libc/sys/readlink.2 b/lib/libc/sys/readlink.2
index 2403764aa65e..72aadef37cc6 100644
--- a/lib/libc/sys/readlink.2
+++ b/lib/libc/sys/readlink.2
@@ -28,7 +28,7 @@
 .\"     @(#)readlink.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd April 10, 2008
+.Dd March 30, 2020
 .Dt READLINK 2
 .Os
 .Sh NAME
@@ -108,6 +108,8 @@ Too many symbolic links were encountered in translating the pathname.
 The named file is not a symbolic link.
 .It Bq Er EIO
 An I/O error occurred while reading from the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EFAULT
 The
 .Fa buf
diff --git a/lib/libc/sys/rename.2 b/lib/libc/sys/rename.2
index fb1b989cb7bc..c67f6ebdc19a 100644
--- a/lib/libc/sys/rename.2
+++ b/lib/libc/sys/rename.2
@@ -28,7 +28,7 @@
 .\"     @(#)rename.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd June 21, 2018
+.Dd March 30, 2020
 .Dt RENAME 2
 .Os
 .Sh NAME
@@ -240,6 +240,8 @@ user's quota of disk blocks on the file system
 containing the directory has been exhausted.
 .It Bq Er EIO
 An I/O error occurred while making or updating a directory entry.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EROFS
 The requested link requires writing in a directory on a read-only file
 system.
diff --git a/lib/libc/sys/rmdir.2 b/lib/libc/sys/rmdir.2
index 5fe464b3b727..de7331acdc3d 100644
--- a/lib/libc/sys/rmdir.2
+++ b/lib/libc/sys/rmdir.2
@@ -28,7 +28,7 @@
 .\"     @(#)rmdir.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd December 9, 2006
+.Dd March 30, 2020
 .Dt RMDIR 2
 .Os
 .Sh NAME
@@ -100,6 +100,8 @@ for a mounted file system.
 .It Bq Er EIO
 An I/O error occurred while deleting the directory entry
 or deallocating the inode.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EROFS
 The directory entry to be removed resides on a read-only file system.
 .It Bq Er EFAULT
diff --git a/lib/libc/sys/sendfile.2 b/lib/libc/sys/sendfile.2
index 840e0e2d0186..6bac3e22ef2b 100644
--- a/lib/libc/sys/sendfile.2
+++ b/lib/libc/sys/sendfile.2
@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd February 15, 2019
+.Dd March 30, 2020
 .Dt SENDFILE 2
 .Os
 .Sh NAME
@@ -351,6 +351,9 @@ is negative.
 .It Bq Er EIO
 An error occurred while reading from
 .Fa fd .
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from
+.Fa fd .
 .It Bq Er ENOTCAPABLE
 The
 .Fa fd
diff --git a/lib/libc/sys/stat.2 b/lib/libc/sys/stat.2
index 033b02066a83..dd90420f20c9 100644
--- a/lib/libc/sys/stat.2
+++ b/lib/libc/sys/stat.2
@@ -28,7 +28,7 @@
 .\"     @(#)stat.2	8.4 (Berkeley) 5/1/95
 .\" $FreeBSD$
 .\"
-.Dd December 5, 2018
+.Dd March 30, 2020
 .Dt STAT 2
 .Os
 .Sh NAME
@@ -379,6 +379,8 @@ argument
 points to an invalid address.
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er ELOOP
 Too many symbolic links were encountered in translating the pathname.
 .It Bq Er ENAMETOOLONG
@@ -410,6 +412,8 @@ argument
 points to an invalid address.
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EOVERFLOW
 The file size in bytes cannot be
 represented correctly in the structure pointed to by
diff --git a/lib/libc/sys/statfs.2 b/lib/libc/sys/statfs.2
index e68c2caf72ea..a865652022bd 100644
--- a/lib/libc/sys/statfs.2
+++ b/lib/libc/sys/statfs.2
@@ -28,7 +28,7 @@
 .\"	@(#)statfs.2	8.5 (Berkeley) 5/24/95
 .\" $FreeBSD$
 .\"
-.Dd February 13, 2017
+.Dd March 30, 2020
 .Dt STATFS 2
 .Os
 .Sh NAME
@@ -204,6 +204,8 @@ points to an invalid address.
 An
 .Tn I/O
 error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .El
 .Pp
 The
@@ -225,6 +227,8 @@ points to an invalid address.
 An
 .Tn I/O
 error occurred while reading from or writing to the file system.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .El
 .Sh SEE ALSO
 .Xr fhstatfs 2 ,
diff --git a/lib/libc/sys/swapon.2 b/lib/libc/sys/swapon.2
index 9a3d66075688..47acbc2dc178 100644
--- a/lib/libc/sys/swapon.2
+++ b/lib/libc/sys/swapon.2
@@ -28,7 +28,7 @@
 .\"     @(#)swapon.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd October 4, 2013
+.Dd March 30, 2020
 .Dt SWAPON 2
 .Os
 .Sh NAME
@@ -115,6 +115,9 @@ is out of range (this indicates no device driver exists
 for the associated hardware).
 .It Bq Er EIO
 An I/O error occurred while opening the swap device.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system to open the
+swap device.
 .El
 .Pp
 Lastly,
diff --git a/lib/libc/sys/symlink.2 b/lib/libc/sys/symlink.2
index ec5f8d40bfe6..3b88b0c6490e 100644
--- a/lib/libc/sys/symlink.2
+++ b/lib/libc/sys/symlink.2
@@ -28,7 +28,7 @@
 .\"     @(#)symlink.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd April 10, 2008
+.Dd March 30, 2020
 .Dt SYMLINK 2
 .Os
 .Sh NAME
@@ -151,6 +151,8 @@ The user's quota of inodes on the file system on
 which the symbolic link is being created has been exhausted.
 .It Bq Er EIO
 An I/O error occurred while making the directory entry or allocating the inode.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EFAULT
 The
 .Fa name1
diff --git a/lib/libc/sys/truncate.2 b/lib/libc/sys/truncate.2
index a6ec8f44f44e..9bab04005220 100644
--- a/lib/libc/sys/truncate.2
+++ b/lib/libc/sys/truncate.2
@@ -28,7 +28,7 @@
 .\"     @(#)truncate.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd January 24, 2020
+.Dd March 30, 2020
 .Dt TRUNCATE 2
 .Os
 .Sh NAME
@@ -117,6 +117,8 @@ The
 argument was less than 0.
 .It Bq Er EIO
 An I/O error occurred updating the inode.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EFAULT
 The
 .Fa path
diff --git a/lib/libc/sys/undelete.2 b/lib/libc/sys/undelete.2
index 981911259ae4..cd1e9f17f66f 100644
--- a/lib/libc/sys/undelete.2
+++ b/lib/libc/sys/undelete.2
@@ -29,7 +29,7 @@
 .\"     @(#)undelete.2	8.4 (Berkeley) 10/18/94
 .\" $FreeBSD$
 .\"
-.Dd January 22, 2006
+.Dd March 30, 2020
 .Dt UNDELETE 2
 .Os
 .Sh NAME
@@ -87,6 +87,8 @@ The last component of the path is
 .Ql .. .
 .It Bq Er EIO
 An I/O error occurred while updating the directory entry.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EROFS
 The name resides on a read-only file system.
 .It Bq Er EFAULT
diff --git a/lib/libc/sys/unlink.2 b/lib/libc/sys/unlink.2
index 6682756b4a57..d4bdf46e6220 100644
--- a/lib/libc/sys/unlink.2
+++ b/lib/libc/sys/unlink.2
@@ -28,7 +28,7 @@
 .\"     @(#)unlink.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd June 6, 2019
+.Dd March 30, 2020
 .Dt UNLINK 2
 .Os
 .Sh NAME
@@ -175,6 +175,8 @@ are owned by the effective user ID.
 .It Bq Er EIO
 An I/O error occurred while deleting the directory entry
 or deallocating the inode.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EROFS
 The named file resides on a read-only file system.
 .It Bq Er EFAULT
diff --git a/lib/libc/sys/utimensat.2 b/lib/libc/sys/utimensat.2
index cf7ba290a813..baf947e04ca0 100644
--- a/lib/libc/sys/utimensat.2
+++ b/lib/libc/sys/utimensat.2
@@ -31,7 +31,7 @@
 .\"     @(#)utimes.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd November 11, 2018
+.Dd March 30, 2020
 .Dt UTIMENSAT 2
 .Os
 .Sh NAME
@@ -200,6 +200,8 @@ or
 .Dv UTIME_OMIT .
 .It Bq Er EIO
 An I/O error occurred while reading or writing the affected inode.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er EPERM
 The
 .Fa times
diff --git a/lib/libc/sys/utimes.2 b/lib/libc/sys/utimes.2
index 480ccebecdbf..6831e504d1f8 100644
--- a/lib/libc/sys/utimes.2
+++ b/lib/libc/sys/utimes.2
@@ -30,7 +30,7 @@
 .\"     @(#)utimes.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd June 9, 2016
+.Dd March 30, 2020
 .Dt UTIMES 2
 .Os
 .Sh NAME
@@ -165,6 +165,8 @@ component of at least one of the values specified by the
 argument has a value less than 0 or greater than 999999.
 .It Bq Er EIO
 An I/O error occurred while reading or writing the affected inode.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the file system.
 .It Bq Er ELOOP
 Too many symbolic links were encountered in translating the pathname.
 .It Bq Er ENAMETOOLONG
diff --git a/lib/libc/sys/write.2 b/lib/libc/sys/write.2
index f9918cdc3cb7..fb70c5e4186b 100644
--- a/lib/libc/sys/write.2
+++ b/lib/libc/sys/write.2
@@ -28,7 +28,7 @@
 .\"     @(#)write.2	8.5 (Berkeley) 4/2/94
 .\" $FreeBSD$
 .\"
-.Dd December 1, 2017
+.Dd March 30, 2020
 .Dt WRITE 2
 .Os
 .Sh NAME
@@ -205,6 +205,12 @@ is greater than
 if the sysctl
 .Va debug.iosize_max_clamp
 is non-zero).
+.It Bq Er EINTEGRITY
+The backing store for
+.Fa fd
+detected corrupted data while reading.
+(For example, writing a partial filesystem block may require first reading
+the existing block which may trigger this error.)
 .El
 .Pp
 In addition,
diff --git a/share/man/man9/VOP_COPY_FILE_RANGE.9 b/share/man/man9/VOP_COPY_FILE_RANGE.9
index a8a0df47aeea..e085898f42da 100644
--- a/share/man/man9/VOP_COPY_FILE_RANGE.9
+++ b/share/man/man9/VOP_COPY_FILE_RANGE.9
@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd November 9, 2019
+.Dd March 30, 2020
 .Dt VOP_COPY_FILE_RANGE 9
 .Os
 .Sh NAME
@@ -133,6 +133,8 @@ reside on.
 A signal interrupted the VOP call before it could be completed.
 .It Bq Er EIO
 An I/O error occurred while reading/writing the files.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading/writing the files.
 .It Bq Er ENOSPC
 The file system is full.
 .El
diff --git a/share/man/man9/VOP_READDIR.9 b/share/man/man9/VOP_READDIR.9
index bac1f3f5fa6a..3f4d9b566636 100644
--- a/share/man/man9/VOP_READDIR.9
+++ b/share/man/man9/VOP_READDIR.9
@@ -28,7 +28,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd July 24, 1996
+.Dd March 30, 2020
 .Dt VOP_READDIR 9
 .Os
 .Sh NAME
@@ -100,6 +100,8 @@ Memory for the cookies should be allocated using:
 An attempt was made to read from an illegal offset in the directory.
 .It Bq Er EIO
 A read error occurred while reading the directory.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading the directory.
 .El
 .Sh SEE ALSO
 .Xr vnode 9
diff --git a/share/man/man9/VOP_READLINK.9 b/share/man/man9/VOP_READLINK.9
index c1883c1e99cd..ac07afc84f21 100644
--- a/share/man/man9/VOP_READLINK.9
+++ b/share/man/man9/VOP_READLINK.9
@@ -28,7 +28,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd July 24, 1996
+.Dd March 30, 2020
 .Dt VOP_READLINK 9
 .Os
 .Sh NAME
@@ -58,6 +58,8 @@ Zero is returned on success, otherwise an error code is returned.
 .Bl -tag -width Er
 .It Bq Er EIO
 A read error occurred while reading the contents of the symlink.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading the contents of the symlink.
 .El
 .Sh SEE ALSO
 .Xr uiomove 9 ,
diff --git a/share/man/man9/g_data.9 b/share/man/man9/g_data.9
index 724854e23dcd..698195019c4f 100644
--- a/share/man/man9/g_data.9
+++ b/share/man/man9/g_data.9
@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd January 16, 2004
+.Dd March 30, 2020
 .Dt G_DATA 9
 .Os
 .Sh NAME
@@ -103,6 +103,8 @@ Possible errors:
 .Bl -tag -width Er
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to the consumer.
+.It Bq Er EINTEGRITY
+Corrupted data was detected while reading from the consumer.
 .El
 .Sh SEE ALSO
 .Xr geom 4 ,