Date: Thu, 16 Oct 2025 02:22:32 GMT From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 24f4ec797e9b - stable/15 - mount_nullfs.8: document unixbypass and nounixbypass Message-ID: <202510160222.59G2MWOs017984@gitrepo.freebsd.org>
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The branch stable/15 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=24f4ec797e9b19abd4488554c78e7ecc27313428 commit 24f4ec797e9b19abd4488554c78e7ecc27313428 Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2025-10-09 20:55:01 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2025-10-16 02:22:20 +0000 mount_nullfs.8: document unixbypass and nounixbypass (cherry picked from commit 033587a985a46e9d45fc3fb48a78754d81f0d50d) --- sbin/mount_nullfs/mount_nullfs.8 | 28 +++++++++++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) diff --git a/sbin/mount_nullfs/mount_nullfs.8 b/sbin/mount_nullfs/mount_nullfs.8 index 17b1f45f5e42..b3cf57fd9dea 100644 --- a/sbin/mount_nullfs/mount_nullfs.8 +++ b/sbin/mount_nullfs/mount_nullfs.8 @@ -90,7 +90,7 @@ See the .Xr mount 8 man page for possible options and their meanings. Additionally the following option is supported: -.Bl -tag -width nocache +.Bl -tag -width nounixbypass .It Cm nocache Disable metadata caching in the null layer. Some lower-layer file systems may force this option. @@ -98,6 +98,32 @@ Depending on the access pattern, this may result in increased lock contention. .It Cm cache Force enable metadata caching. +.It Cm nounixbypass +Disable bypassing +.Xr unix 4 +socket files used for +.Xr bind 2 +and +.Xr connect 2 , +to the lower (mounted-from) filesystem layer. +.Pp +The effect is that lower and upper (bypassed) unix sockets +are separate. +.It Cm unixbypass +Enable the bypass of unix socket file to lower filesystem layer. +This is default. +.Pp +The effect is that +.Xr bind 2 +and +.Xr connect 2 +operations on a unix socket done from either the upper (nullfs) or lower +layer path are performed on same unix socket. +For instance, if a server +.Xr bind 2 +is done on a socket in the lower layer, then +.Xr connect 2 +on the socket file accessed via the nullfs mount, connects to the server. .El .El .Pphelp
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