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| author | kib <kib@FreeBSD.org> | 2016-09-28 09:28:26 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2016-09-28 09:28:26 +0000 |
| commit | 99323399e34db51f6f54d27305ecdefe904a61cd (patch) | |
| tree | bd9571099164439fc094a0b984670e3a87bca3f9 /sys/kern/kern_procctl.c | |
| parent | 71f3313e4975419065fd53a1c4cb6a135a94a686 (diff) | |
| download | FreeBSD-src-99323399e34db51f6f54d27305ecdefe904a61cd.zip FreeBSD-src-99323399e34db51f6f54d27305ecdefe904a61cd.tar.gz | |
MFC r306081:
Add PROC_TRAPCAP procctl(2) controls and global sysctl kern.trap_enocap.
Diffstat (limited to 'sys/kern/kern_procctl.c')
| -rw-r--r-- | sys/kern/kern_procctl.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/sys/kern/kern_procctl.c b/sys/kern/kern_procctl.c index 8ef72901..d028e25 100644 --- a/sys/kern/kern_procctl.c +++ b/sys/kern/kern_procctl.c @@ -336,6 +336,34 @@ trace_status(struct thread *td, struct proc *p, int *data) return (0); } +static int +trapcap_ctl(struct thread *td, struct proc *p, int state) +{ + + PROC_LOCK_ASSERT(p, MA_OWNED); + + switch (state) { + case PROC_TRAPCAP_CTL_ENABLE: + p->p_flag2 |= P2_TRAPCAP; + break; + case PROC_TRAPCAP_CTL_DISABLE: + p->p_flag2 &= ~P2_TRAPCAP; + break; + default: + return (EINVAL); + } + return (0); +} + +static int +trapcap_status(struct thread *td, struct proc *p, int *data) +{ + + *data = (p->p_flag2 & P2_TRAPCAP) != 0 ? PROC_TRAPCAP_CTL_ENABLE : + PROC_TRAPCAP_CTL_DISABLE; + return (0); +} + #ifndef _SYS_SYSPROTO_H_ struct procctl_args { idtype_t idtype; @@ -359,6 +387,7 @@ sys_procctl(struct thread *td, struct procctl_args *uap) switch (uap->com) { case PROC_SPROTECT: case PROC_TRACE_CTL: + case PROC_TRAPCAP_CTL: error = copyin(uap->data, &flags, sizeof(flags)); if (error != 0) return (error); @@ -386,6 +415,7 @@ sys_procctl(struct thread *td, struct procctl_args *uap) data = &x.rk; break; case PROC_TRACE_STATUS: + case PROC_TRAPCAP_STATUS: data = &flags; break; default: @@ -403,6 +433,7 @@ sys_procctl(struct thread *td, struct procctl_args *uap) error = error1; break; case PROC_TRACE_STATUS: + case PROC_TRAPCAP_STATUS: if (error == 0) error = copyout(&flags, uap->data, sizeof(flags)); break; @@ -432,6 +463,10 @@ kern_procctl_single(struct thread *td, struct proc *p, int com, void *data) return (trace_ctl(td, p, *(int *)data)); case PROC_TRACE_STATUS: return (trace_status(td, p, data)); + case PROC_TRAPCAP_CTL: + return (trapcap_ctl(td, p, *(int *)data)); + case PROC_TRAPCAP_STATUS: + return (trapcap_status(td, p, data)); default: return (EINVAL); } @@ -452,6 +487,7 @@ kern_procctl(struct thread *td, idtype_t idtype, id_t id, int com, void *data) case PROC_REAP_GETPIDS: case PROC_REAP_KILL: case PROC_TRACE_STATUS: + case PROC_TRAPCAP_STATUS: if (idtype != P_PID) return (EINVAL); } @@ -462,6 +498,7 @@ kern_procctl(struct thread *td, idtype_t idtype, id_t id, int com, void *data) case PROC_REAP_GETPIDS: case PROC_REAP_KILL: case PROC_TRACE_CTL: + case PROC_TRAPCAP_CTL: sx_slock(&proctree_lock); tree_locked = true; break; @@ -471,6 +508,7 @@ kern_procctl(struct thread *td, idtype_t idtype, id_t id, int com, void *data) tree_locked = true; break; case PROC_TRACE_STATUS: + case PROC_TRAPCAP_STATUS: tree_locked = false; break; default: |
