The branch stable/15 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=4ae6f372e26c786bfdb293620650fd8203171788
commit 4ae6f372e26c786bfdb293620650fd8203171788 Author: Konstantin Belousov <[email protected]> AuthorDate: 2026-01-08 00:32:11 +0000 Commit: Konstantin Belousov <[email protected]> CommitDate: 2026-02-01 21:38:48 +0000 sys: add pdrfork(2) (cherry picked from commit 5c2ee618d5ec21f110c4da40e9f17833b2ab8b76) --- sys/kern/kern_fork.c | 42 ++++++++++++++++++++++++++++++++++++++++++ sys/kern/syscalls.master | 10 ++++++++++ 2 files changed, 52 insertions(+) diff --git a/sys/kern/kern_fork.c b/sys/kern/kern_fork.c index d5f446ff59b0..595d8687c25f 100644 --- a/sys/kern/kern_fork.c +++ b/sys/kern/kern_fork.c @@ -189,6 +189,48 @@ sys_rfork(struct thread *td, struct rfork_args *uap) return (error); } +int +sys_pdrfork(struct thread *td, struct pdrfork_args *uap) +{ + struct fork_req fr; + int error, fd, pid; + + bzero(&fr, sizeof(fr)); + fd = -1; + + AUDIT_ARG_FFLAGS(uap->pdflags); + AUDIT_ARG_CMD(uap->rfflags); + + if ((uap->rfflags & (RFSTOPPED | RFHIGHPID)) != 0) + return (EXTERROR(EINVAL, + "Kernel-only flags %#jx", uap->rfflags)); + + /* RFSPAWN must not appear with others */ + if ((uap->rfflags & RFSPAWN) != 0) { + if (uap->rfflags != RFSPAWN) + return (EXTERROR(EINVAL, + "RFSPAWN must be the only flag %#jx", + uap->rfflags)); + fr.fr_flags = RFFDG | RFPROC | RFPPWAIT | RFMEM | RFPROCDESC; + fr.fr_flags2 = FR2_DROPSIG_CAUGHT; + } else { + fr.fr_flags = uap->rfflags; + } + + fr.fr_pidp = &pid; + fr.fr_pd_fd = &fd; + fr.fr_pd_flags = uap->pdflags; + error = fork1(td, &fr); + if (error == 0) { + td->td_retval[0] = pid; + td->td_retval[1] = 0; + if ((fr.fr_flags & (RFPROC | RFPROCDESC)) == + (RFPROC | RFPROCDESC) || uap->rfflags == RFSPAWN) + error = copyout(&fd, uap->fdp, sizeof(fd)); + } + return (error); +} + int __exclusive_cache_line nprocs = 1; /* process 0 */ int lastpid = 0; SYSCTL_INT(_kern, OID_AUTO, lastpid, CTLFLAG_RD, &lastpid, 0, diff --git a/sys/kern/syscalls.master b/sys/kern/syscalls.master index 967af1f5313c..3a6e3cb7266e 100644 --- a/sys/kern/syscalls.master +++ b/sys/kern/syscalls.master @@ -3394,4 +3394,14 @@ ); } +599 AUE_NULL UNIMPL kexec_load + +600 AUE_PDRFORK STD|CAPENABLED { + int pdrfork( + _Out_ int *fdp, + int pdflags, + int rfflags + ); + } + ; vim: syntax=off
