The branch main has been updated by kib:
URL:
https://cgit.FreeBSD.org/src/commit/?id=71ab344524a14f00f21c4c5638906d7b965d2b64
commit 71ab344524a14f00f21c4c5638906d7b965d2b64
Author: Konstantin Belousov <k...@freebsd.org>
AuthorDate: 2021-07-01 18:04:06 +0000
Commit: Konstantin Belousov <k...@freebsd.org>
CommitDate: 2021-07-07 11:12:07 +0000
Add sv_onexec_old() sysent hook for exec event
Unlike sv_onexec(), it is called from the old (pre-exec) sysentvec
structure.
The old vmspace for the process is still intact during the call.
Reviewed by: dchagin, markj
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D30987
---
sys/kern/kern_exec.c | 2 ++
sys/sys/sysent.h | 1 +
2 files changed, 3 insertions(+)
diff --git a/sys/kern/kern_exec.c b/sys/kern/kern_exec.c
index c3c23f44189e..763196a593e4 100644
--- a/sys/kern/kern_exec.c
+++ b/sys/kern/kern_exec.c
@@ -1064,6 +1064,8 @@ exec_new_vmspace(struct image_params *imgp, struct
sysentvec *sv)
sigfastblock_clear(td);
umtx_exec(p);
+ if (p->p_sysent->sv_onexec_old != NULL)
+ p->p_sysent->sv_onexec_old(td);
itimers_exec(p);
if (sv->sv_onexec != NULL)
sv->sv_onexec(p, imgp);
diff --git a/sys/sys/sysent.h b/sys/sys/sysent.h
index e0e5e351ae20..869c140c06f5 100644
--- a/sys/sys/sysent.h
+++ b/sys/sys/sysent.h
@@ -150,6 +150,7 @@ struct sysentvec {
u_long *sv_hwcap2; /* Value passed in AT_HWCAP2. */
const char *(*sv_machine_arch)(struct proc *);
vm_offset_t sv_fxrng_gen_base;
+ void (*sv_onexec_old)(struct thread *td);
void (*sv_onexec)(struct proc *, struct image_params *);
void (*sv_onexit)(struct proc *);
void (*sv_ontdexit)(struct thread *td);
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