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| author | Konstantin Belousov <kib@FreeBSD.org> | 2019-09-03 18:56:25 +0000 |
|---|---|---|
| committer | Konstantin Belousov <kib@FreeBSD.org> | 2019-09-03 18:56:25 +0000 |
| commit | fe69291ff4eba3692489bee077bd4f1182e68371 (patch) | |
| tree | daada07f22116fe9051d62578dfec51cf3e4f58d /sys/kern/kern_exec.c | |
| parent | 14113f123e464c54345d0af2fd9ee60f3b38c196 (diff) | |
| download | src-fe69291ff4eba3692489bee077bd4f1182e68371.tar.gz src-fe69291ff4eba3692489bee077bd4f1182e68371.zip | |
Add procctl(PROC_STACKGAP_CTL)
It allows a process to request that stack gap was not applied to its
stacks, retroactively. Also it is possible to control the gaps in the
process after exec.
PR: 239894
Reviewed by: alc
Sponsored by: The FreeBSD Foundation
Differential revision: https://reviews.freebsd.org/D21352
Notes
Notes:
svn path=/head/; revision=351773
Diffstat (limited to 'sys/kern/kern_exec.c')
| -rw-r--r-- | sys/kern/kern_exec.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/kern/kern_exec.c b/sys/kern/kern_exec.c index 01472c4dc695..568c0ce6ba86 100644 --- a/sys/kern/kern_exec.c +++ b/sys/kern/kern_exec.c @@ -745,6 +745,8 @@ interpret: p->p_flag |= P_EXEC; if ((p->p_flag2 & P2_NOTRACE_EXEC) == 0) p->p_flag2 &= ~P2_NOTRACE; + if ((p->p_flag2 & P2_STKGAP_DISABLE_EXEC) == 0) + p->p_flag2 &= ~P2_STKGAP_DISABLE; if (p->p_flag & P_PPWAIT) { p->p_flag &= ~(P_PPWAIT | P_PPTRACE); cv_broadcast(&p->p_pwait); |