Date: Fri, 01 May 2026 03:03:06 +0000 From: Kyle Evans <kevans@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 9c18d55a768a - main - fexecve(2): call out a scenario where you want !O_EXEC Message-ID: <69f417ea.4443c.3e1509f@gitrepo.freebsd.org>
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The branch main has been updated by kevans: URL: https://cgit.FreeBSD.org/src/commit/?id=9c18d55a768a3e60ecaba1325e9a3e00a25dee26 commit 9c18d55a768a3e60ecaba1325e9a3e00a25dee26 Author: Kyle Evans <kevans@FreeBSD.org> AuthorDate: 2026-05-01 03:02:55 +0000 Commit: Kyle Evans <kevans@FreeBSD.org> CommitDate: 2026-05-01 03:02:55 +0000 fexecve(2): call out a scenario where you want !O_EXEC We note a reason why you might need it, but there's an equally important reason you may need to omit it: interpreted programs. Add a note accordingly, along with the workaround configuration if there's reason you can't help it. PR: 294780 Reviewed by: Jan Bramkamp <crest_freebsd_rlwinm.de>, kib Differential Revision: https://reviews.freebsd.org/D56704 --- lib/libsys/execve.2 | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/lib/libsys/execve.2 b/lib/libsys/execve.2 index dc85b9321e48..5562e198239a 100644 --- a/lib/libsys/execve.2 +++ b/lib/libsys/execve.2 @@ -25,7 +25,7 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.Dd July 02, 2025 +.Dd April 29, 2026 .Dt EXECVE 2 .Os .Sh NAME @@ -232,6 +232,17 @@ is to use the .Dv O_EXEC flag when opening .Fa fd . +Opening without +.Dv O_EXEC +may be necessary in the case of executing an interpreted program, as the +interpreter will not be able to acquire a descriptor to the script for reading +without mounting +.Xr fdescfs 4 +on +.Pa /dev/fd +with the +.Cm nodup +option. Note that the file to be executed can not be open for writing. .Sh RETURN VALUES As thehome | help
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