Document RLIMIT_PIPEBUF. Other doc fixes.

Author: serhiy-storchaka

Doc/library/resource.rst

@@ -62,9 +62,7 @@ this module for those platforms.
 
    Constants used to represent the soft and hard limit values if they
    cannot be represented in the ``rlim_t`` value in C.
-   On FreeBSD they are aliases of :data:`RLIM_INFINITY`.
-
-   .. availability:: Solaris, AIX, FreeBSD
+   Can be equal to :data:`RLIM_INFINITY`.
 
    .. versionadded:: next
 
@@ -193,8 +191,9 @@ platform.
 .. data:: RLIMIT_VMEM
 
    The largest area of mapped memory which the process may occupy.
+   Usually an alias of :const:`RLIMIT_AS`.
 
-   .. availability:: Solaris, FreeBSD.
+   .. availability:: Solaris, FreeBSD, NetBSD.
 
 
 .. data:: RLIMIT_AS
@@ -254,7 +253,7 @@ platform.
    This limits the amount of network memory, and hence the amount of mbufs,
    that this user may hold at any time.
 
-   .. availability:: FreeBSD.
+   .. availability:: FreeBSD, NetBSD.
 
    .. versionadded:: 3.4
 
@@ -301,6 +300,16 @@ platform.
    .. versionadded:: next
 
 
+.. data:: RLIMIT_PIPEBUF
+
+   The maximum total size of in-kernel buffers for bi-directional pipes/fifos
+   that this user id is allowed to consume.
+
+   .. availability:: FreeBSD >= 14.2.
+
+   .. versionadded:: next
+
+
 .. data:: RLIMIT_THREADS
 
    The maximum number of threads each process can create.

Lib/test/test_resource.py

@@ -216,7 +216,7 @@ def test_linux_constants(self):
                 self.assertIsInstance(getattr(resource, 'RLIMIT_' + attr), int)
 
     def test_freebsd_contants(self):
-        for attr in ['SWAP', 'SBSIZE', 'NPTS', 'UMTXP', 'VMEM']:
+        for attr in ['SWAP', 'SBSIZE', 'NPTS', 'UMTXP', 'VMEM', 'PIPEBUF']:
             with contextlib.suppress(AttributeError):
                 self.assertIsInstance(getattr(resource, 'RLIMIT_' + attr), int)
 

Misc/NEWS.d/next/Library/2025-08-07-15-07-44.gh-issue-137512.j2or5h.rst

@@ -1,4 +1,4 @@
 Add new constants in the :mod:`resource` module:
 :data:`~resource.RLIMIT_NTHR`, :data:`~resource.RLIMIT_UMTXP`,
-:data:`~resource.RLIMIT_THREADS`, :data:`~resource.RLIM_SAVED_CUR`, and
-:data:`~resource.RLIM_SAVED_MAX`.
+:data:`~resource.RLIMIT_PIPEBUF`, :data:`~resource.RLIMIT_THREADS`,
+:data:`~resource.RLIM_SAVED_CUR`, and :data:`~resource.RLIM_SAVED_MAX`.