git: 737edb8fb52b - main - posix_fallocate(2): move unsupported case to EOPNOTSUPP

The branch main has been updated by kevans:

URL: https://cgit.FreeBSD.org/src/commit/?id=737edb8fb52b6ed13ae4e09553a0d2ae2899cede

commit 737edb8fb52b6ed13ae4e09553a0d2ae2899cede
Author:     Kyle Evans <kevans@FreeBSD.org>
AuthorDate: 2025-11-05 00:30:59 +0000
Commit:     Kyle Evans <kevans@FreeBSD.org>
CommitDate: 2025-11-05 00:30:59 +0000

    posix_fallocate(2): move unsupported case to EOPNOTSUPP
    
    ZFS has since been changed to use EOPNOTSUPP instead of EINVAL, and
    fusefs/nfs are following suit.  POSIX Issue 8 had also made this move,
    so it makes sense for us to standardize on EOPNOTSUPP.
    
    Note in the HISTORY section where we're diverging from our previous
    versions to align with the new standard.
    
    Reviewed by:    asomers, imp (both previous version), kib
    Differential Revision:  https://reviews.freebsd.org/D53537
---
 lib/libsys/posix_fallocate.2 | 26 ++++++++++++++++++++++----
 1 file changed, 22 insertions(+), 4 deletions(-)

diff --git a/lib/libsys/posix_fallocate.2 b/lib/libsys/posix_fallocate.2
index 8be075b41331..94858c4a0f90 100644
--- a/lib/libsys/posix_fallocate.2
+++ b/lib/libsys/posix_fallocate.2
@@ -25,7 +25,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd March 30, 2020
+.Dd November 2, 2025
 .Dt POSIX_FALLOCATE 2
 .Os
 .Sh NAME
@@ -105,8 +105,7 @@ The
 .Fa len
 argument was less than or equal to zero, the
 .Fa offset
-argument was less than zero,
-or the operation is not supported by the file system.
+argument was less than zero.
 .It Bq Er EIO
 An I/O error occurred while reading from or writing to a file system.
 .It Bq Er EINTEGRITY
@@ -123,6 +122,8 @@ media.
 The file descriptor
 .Fa fd
 has insufficient rights.
+.It Bq Er EOPNOTSUPP
+The operation is not supported by the file system.
 .It Bq Er ESPIPE
 The
 .Fa fd
@@ -137,12 +138,29 @@ argument is associated with a pipe or FIFO.
 The
 .Fn posix_fallocate
 system call conforms to
-.St -p1003.1-2004 .
+.St -p1003.1-2024 .
 .Sh HISTORY
 The
 .Fn posix_fallocate
 function appeared in
 .Fx 9.0 .
+.Pp
+Previous versions of
+.Nm
+used
+.Er EINVAL
+to indicate that the operation is not supported by the file system, as specified
+in
+.St -p1003.1
+Base Specifications, Issue 7.
+.St -p1003.1
+Base Specifications, Issue 8 switched to requiring
+.Er EOPNOTSUPP
+for this error case.
+ZFS adopted the latter convention in
+.Fx 15.0 ,
+and the remaining filesystems in base adopted it in
+.Fx 15.1 .
 .Sh AUTHORS
 .Fn posix_fallocate
 and this manual page were initially written by