Date: Tue, 26 Oct 2021 02:37:09 GMT From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 38506cebc1e0 - stable/13 - kern_procctl_single(): convert to use table data Message-ID: <202110260237.19Q2b9Tu039965@gitrepo.freebsd.org>
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The branch stable/13 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=38506cebc1e065281918f8614417b29c5b0de599 commit 38506cebc1e065281918f8614417b29c5b0de599 Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2021-10-15 19:22:18 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2021-10-26 02:26:26 +0000 kern_procctl_single(): convert to use table data (cherry picked from commit 68dc5b381a29aaa418064324519105a8c2a4a080) --- sys/kern/kern_procctl.c | 220 +++++++++++++++++++++++++----------------------- 1 file changed, 114 insertions(+), 106 deletions(-) diff --git a/sys/kern/kern_procctl.c b/sys/kern/kern_procctl.c index 1e29429aacf2..06efcf0e8c74 100644 --- a/sys/kern/kern_procctl.c +++ b/sys/kern/kern_procctl.c @@ -102,10 +102,11 @@ protect_setchildren(struct thread *td, struct proc *top, int flags) } static int -protect_set(struct thread *td, struct proc *p, int flags) +protect_set(struct thread *td, struct proc *p, void *data) { - int error, ret; + int error, flags, ret; + flags = *(int *)data; switch (PPROT_OP(flags)) { case PPROT_SET: case PPROT_CLEAR: @@ -131,7 +132,7 @@ protect_set(struct thread *td, struct proc *p, int flags) } static int -reap_acquire(struct thread *td, struct proc *p) +reap_acquire(struct thread *td, struct proc *p, void *data __unused) { sx_assert(&proctree_lock, SX_XLOCKED); @@ -148,7 +149,7 @@ reap_acquire(struct thread *td, struct proc *p) } static int -reap_release(struct thread *td, struct proc *p) +reap_release(struct thread *td, struct proc *p, void *data __unused) { sx_assert(&proctree_lock, SX_XLOCKED); @@ -163,11 +164,12 @@ reap_release(struct thread *td, struct proc *p) } static int -reap_status(struct thread *td, struct proc *p, - struct procctl_reaper_status *rs) +reap_status(struct thread *td, struct proc *p, void *data) { struct proc *reap, *p2, *first_p; + struct procctl_reaper_status *rs; + rs = data; sx_assert(&proctree_lock, SX_LOCKED); bzero(rs, sizeof(*rs)); if ((p->p_treeflag & P_TREE_REAPER) == 0) { @@ -198,13 +200,15 @@ reap_status(struct thread *td, struct proc *p, } static int -reap_getpids(struct thread *td, struct proc *p, struct procctl_reaper_pids *rp) +reap_getpids(struct thread *td, struct proc *p, void *data) { struct proc *reap, *p2; struct procctl_reaper_pidinfo *pi, *pip; + struct procctl_reaper_pids *rp; u_int i, n; int error; + rp = data; sx_assert(&proctree_lock, SX_LOCKED); PROC_UNLOCK(p); reap = (p->p_treeflag & P_TREE_REAPER) == 0 ? p->p_reaper : p; @@ -276,14 +280,16 @@ reap_kill_sched(struct reap_kill_tracker_head *tracker, struct proc *p2) } static int -reap_kill(struct thread *td, struct proc *p, struct procctl_reaper_kill *rk) +reap_kill(struct thread *td, struct proc *p, void *data) { struct proc *reap, *p2; ksiginfo_t ksi; struct reap_kill_tracker_head tracker; struct reap_kill_tracker *t; + struct procctl_reaper_kill *rk; int error; + rk = data; sx_assert(&proctree_lock, SX_LOCKED); if (IN_CAPABILITY_MODE(td)) return (ECAPMODE); @@ -336,10 +342,12 @@ reap_kill(struct thread *td, struct proc *p, struct procctl_reaper_kill *rk) } static int -trace_ctl(struct thread *td, struct proc *p, int state) +trace_ctl(struct thread *td, struct proc *p, void *data) { + int state; PROC_LOCK_ASSERT(p, MA_OWNED); + state = *(int *)data; /* * Ktrace changes p_traceflag from or to zero under the @@ -376,26 +384,30 @@ trace_ctl(struct thread *td, struct proc *p, int state) } static int -trace_status(struct thread *td, struct proc *p, int *data) +trace_status(struct thread *td, struct proc *p, void *data) { + int *status; + status = data; if ((p->p_flag2 & P2_NOTRACE) != 0) { KASSERT((p->p_flag & P_TRACED) == 0, ("%d traced but tracing disabled", p->p_pid)); - *data = -1; + *status = -1; } else if ((p->p_flag & P_TRACED) != 0) { - *data = p->p_pptr->p_pid; + *status = p->p_pptr->p_pid; } else { - *data = 0; + *status = 0; } return (0); } static int -trapcap_ctl(struct thread *td, struct proc *p, int state) +trapcap_ctl(struct thread *td, struct proc *p, void *data) { + int state; PROC_LOCK_ASSERT(p, MA_OWNED); + state = *(int *)data; switch (state) { case PROC_TRAPCAP_CTL_ENABLE: @@ -411,19 +423,23 @@ trapcap_ctl(struct thread *td, struct proc *p, int state) } static int -trapcap_status(struct thread *td, struct proc *p, int *data) +trapcap_status(struct thread *td, struct proc *p, void *data) { + int *status; - *data = (p->p_flag2 & P2_TRAPCAP) != 0 ? PROC_TRAPCAP_CTL_ENABLE : + status = data; + *status = (p->p_flag2 & P2_TRAPCAP) != 0 ? PROC_TRAPCAP_CTL_ENABLE : PROC_TRAPCAP_CTL_DISABLE; return (0); } static int -no_new_privs_ctl(struct thread *td, struct proc *p, int state) +no_new_privs_ctl(struct thread *td, struct proc *p, void *data) { + int state; PROC_LOCK_ASSERT(p, MA_OWNED); + state = *(int *)data; if (state != PROC_NO_NEW_PRIVS_ENABLE) return (EINVAL); @@ -432,18 +448,21 @@ no_new_privs_ctl(struct thread *td, struct proc *p, int state) } static int -no_new_privs_status(struct thread *td, struct proc *p, int *data) +no_new_privs_status(struct thread *td, struct proc *p, void *data) { - *data = (p->p_flag2 & P2_NO_NEW_PRIVS) != 0 ? + *(int *)data = (p->p_flag2 & P2_NO_NEW_PRIVS) != 0 ? PROC_NO_NEW_PRIVS_ENABLE : PROC_NO_NEW_PRIVS_DISABLE; return (0); } static int -protmax_ctl(struct thread *td, struct proc *p, int state) +protmax_ctl(struct thread *td, struct proc *p, void *data) { + int state; + PROC_LOCK_ASSERT(p, MA_OWNED); + state = *(int *)data; switch (state) { case PROC_PROTMAX_FORCE_ENABLE: @@ -464,7 +483,7 @@ protmax_ctl(struct thread *td, struct proc *p, int state) } static int -protmax_status(struct thread *td, struct proc *p, int *data) +protmax_status(struct thread *td, struct proc *p, void *data) { int d; @@ -481,15 +500,17 @@ protmax_status(struct thread *td, struct proc *p, int *data) } if (kern_mmap_maxprot(p, PROT_READ) == PROT_READ) d |= PROC_PROTMAX_ACTIVE; - *data = d; + *(int *)data = d; return (0); } static int -aslr_ctl(struct thread *td, struct proc *p, int state) +aslr_ctl(struct thread *td, struct proc *p, void *data) { + int state; PROC_LOCK_ASSERT(p, MA_OWNED); + state = *(int *)data; switch (state) { case PROC_ASLR_FORCE_ENABLE: @@ -510,7 +531,7 @@ aslr_ctl(struct thread *td, struct proc *p, int state) } static int -aslr_status(struct thread *td, struct proc *p, int *data) +aslr_status(struct thread *td, struct proc *p, void *data) { struct vmspace *vm; int d; @@ -538,14 +559,17 @@ aslr_status(struct thread *td, struct proc *p, int *data) PROC_LOCK(p); _PRELE(p); } - *data = d; + *(int *)data = d; return (0); } static int -stackgap_ctl(struct thread *td, struct proc *p, int state) +stackgap_ctl(struct thread *td, struct proc *p, void *data) { + int state; + PROC_LOCK_ASSERT(p, MA_OWNED); + state = *(int *)data; if ((state & ~(PROC_STACKGAP_ENABLE | PROC_STACKGAP_DISABLE | PROC_STACKGAP_ENABLE_EXEC | PROC_STACKGAP_DISABLE_EXEC)) != 0) @@ -580,26 +604,31 @@ stackgap_ctl(struct thread *td, struct proc *p, int state) } static int -stackgap_status(struct thread *td, struct proc *p, int *data) +stackgap_status(struct thread *td, struct proc *p, void *data) { + int d; + PROC_LOCK_ASSERT(p, MA_OWNED); - *data = (p->p_flag2 & P2_STKGAP_DISABLE) != 0 ? PROC_STACKGAP_DISABLE : + d = (p->p_flag2 & P2_STKGAP_DISABLE) != 0 ? PROC_STACKGAP_DISABLE : PROC_STACKGAP_ENABLE; - *data |= (p->p_flag2 & P2_STKGAP_DISABLE_EXEC) != 0 ? + d |= (p->p_flag2 & P2_STKGAP_DISABLE_EXEC) != 0 ? PROC_STACKGAP_DISABLE_EXEC : PROC_STACKGAP_ENABLE_EXEC; + *(int *)data = d; return (0); } static int -wxmap_ctl(struct thread *td, struct proc *p, int state) +wxmap_ctl(struct thread *td, struct proc *p, void *data) { struct vmspace *vm; vm_map_t map; + int state; PROC_LOCK_ASSERT(p, MA_OWNED); if ((p->p_flag & P_WEXIT) != 0) return (ESRCH); + state = *(int *)data; switch (state) { case PROC_WX_MAPPINGS_PERMIT: @@ -628,7 +657,7 @@ wxmap_ctl(struct thread *td, struct proc *p, int state) } static int -wxmap_status(struct thread *td, struct proc *p, int *data) +wxmap_status(struct thread *td, struct proc *p, void *data) { struct vmspace *vm; int d; @@ -652,21 +681,24 @@ wxmap_status(struct thread *td, struct proc *p, int *data) } PROC_LOCK(p); _PRELE(p); - *data = d; + *(int *)data = d; return (0); } static int -pdeathsig_ctl(struct thread *td, struct proc *p, int data) +pdeathsig_ctl(struct thread *td, struct proc *p, void *data) { - if (p != td->td_proc || (data != 0 && !_SIG_VALID(data))) + int signum; + + signum = *(int *)data; + if (p != td->td_proc || (signum != 0 && !_SIG_VALID(signum))) return (EINVAL); - p->p_pdeathsig = data; + p->p_pdeathsig = signum; return (0); } static int -pdeathsig_status(struct thread *td, struct proc *p, int *data) +pdeathsig_status(struct thread *td, struct proc *p, void *data) { if (p != td->td_proc) return (EINVAL); @@ -678,74 +710,97 @@ struct procctl_cmd_info { int lock_tree; bool one_proc : 1; bool esrch_is_einval : 1; + int (*exec)(struct thread *, struct proc *, void *); }; static const struct procctl_cmd_info procctl_cmds_info[] = { [PROC_SPROTECT] = { .lock_tree = SA_SLOCKED, .one_proc = false, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = protect_set, }, [PROC_REAP_ACQUIRE] = { .lock_tree = SA_XLOCKED, .one_proc = true, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = reap_acquire, }, [PROC_REAP_RELEASE] = { .lock_tree = SA_XLOCKED, .one_proc = true, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = reap_release, }, [PROC_REAP_STATUS] = { .lock_tree = SA_SLOCKED, .one_proc = true, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = reap_status, }, [PROC_REAP_GETPIDS] = { .lock_tree = SA_SLOCKED, .one_proc = true, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = reap_getpids, }, [PROC_REAP_KILL] = { .lock_tree = SA_SLOCKED, .one_proc = true, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = reap_kill, }, [PROC_TRACE_CTL] = { .lock_tree = SA_SLOCKED, .one_proc = false, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = trace_ctl, }, [PROC_TRACE_STATUS] = { .lock_tree = SA_UNLOCKED, .one_proc = true, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = trace_status, }, [PROC_TRAPCAP_CTL] = { .lock_tree = SA_SLOCKED, .one_proc = false, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = trapcap_ctl, }, [PROC_TRAPCAP_STATUS] = { .lock_tree = SA_UNLOCKED, .one_proc = true, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = trapcap_status, }, [PROC_PDEATHSIG_CTL] = { .lock_tree = SA_UNLOCKED, .one_proc = true, - .esrch_is_einval = true, }, + .esrch_is_einval = true, + .exec = pdeathsig_ctl, }, [PROC_PDEATHSIG_STATUS] = { .lock_tree = SA_UNLOCKED, .one_proc = true, - .esrch_is_einval = true, }, + .esrch_is_einval = true, + .exec = pdeathsig_status, }, [PROC_ASLR_CTL] = { .lock_tree = SA_UNLOCKED, .one_proc = true, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = aslr_ctl, }, [PROC_ASLR_STATUS] = { .lock_tree = SA_UNLOCKED, .one_proc = true, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = aslr_status, }, [PROC_PROTMAX_CTL] = { .lock_tree = SA_UNLOCKED, .one_proc = true, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = protmax_ctl, }, [PROC_PROTMAX_STATUS] = { .lock_tree = SA_UNLOCKED, .one_proc = true, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = protmax_status, }, [PROC_STACKGAP_CTL] = { .lock_tree = SA_UNLOCKED, .one_proc = true, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = stackgap_ctl, }, [PROC_STACKGAP_STATUS] = { .lock_tree = SA_UNLOCKED, .one_proc = true, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = stackgap_status, }, [PROC_NO_NEW_PRIVS_CTL] = { .lock_tree = SA_SLOCKED, .one_proc = true, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = no_new_privs_ctl, }, [PROC_NO_NEW_PRIVS_STATUS] = { .lock_tree = SA_UNLOCKED, .one_proc = true, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = no_new_privs_status, }, [PROC_WXMAP_CTL] = { .lock_tree = SA_UNLOCKED, .one_proc = true, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = wxmap_ctl, }, [PROC_WXMAP_STATUS] = { .lock_tree = SA_UNLOCKED, .one_proc = true, - .esrch_is_einval = false, }, + .esrch_is_einval = false, + .exec = wxmap_status, }, }; int @@ -853,54 +908,7 @@ kern_procctl_single(struct thread *td, struct proc *p, int com, void *data) { PROC_LOCK_ASSERT(p, MA_OWNED); - switch (com) { - case PROC_ASLR_CTL: - return (aslr_ctl(td, p, *(int *)data)); - case PROC_ASLR_STATUS: - return (aslr_status(td, p, data)); - case PROC_SPROTECT: - return (protect_set(td, p, *(int *)data)); - case PROC_PROTMAX_CTL: - return (protmax_ctl(td, p, *(int *)data)); - case PROC_PROTMAX_STATUS: - return (protmax_status(td, p, data)); - case PROC_STACKGAP_CTL: - return (stackgap_ctl(td, p, *(int *)data)); - case PROC_STACKGAP_STATUS: - return (stackgap_status(td, p, data)); - case PROC_REAP_ACQUIRE: - return (reap_acquire(td, p)); - case PROC_REAP_RELEASE: - return (reap_release(td, p)); - case PROC_REAP_STATUS: - return (reap_status(td, p, data)); - case PROC_REAP_GETPIDS: - return (reap_getpids(td, p, data)); - case PROC_REAP_KILL: - return (reap_kill(td, p, data)); - case PROC_TRACE_CTL: - 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)); - case PROC_PDEATHSIG_CTL: - return (pdeathsig_ctl(td, p, *(int *)data)); - case PROC_PDEATHSIG_STATUS: - return (pdeathsig_status(td, p, data)); - case PROC_NO_NEW_PRIVS_CTL: - return (no_new_privs_ctl(td, p, *(int *)data)); - case PROC_NO_NEW_PRIVS_STATUS: - return (no_new_privs_status(td, p, data)); - case PROC_WXMAP_CTL: - return (wxmap_ctl(td, p, *(int *)data)); - case PROC_WXMAP_STATUS: - return (wxmap_status(td, p, data)); - default: - return (EINVAL); - } + return (procctl_cmds_info[com].exec(td, p, data)); } int
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