From: Stacey Son <s...@freebsd.org>
Implement t2h_procctl_cmd, h2t_reaper_status, h2t_reaper_pidinfo and h2t/t2h
reaper_kill conversion functions.
Signed-off-by: Stacey Son <s...@freebsd.org>
Signed-off-by: Karim Taha <kariem.taha...@gmail.com>
Reviewed-by: Warner Losh <i...@bsdimp.com>
---
bsd-user/freebsd/os-proc.c | 222 ++++++++++++++++++++++++++++++++++
bsd-user/freebsd/os-syscall.c | 3 +
2 files changed, 225 insertions(+)
diff --git a/bsd-user/freebsd/os-proc.c b/bsd-user/freebsd/os-proc.c
index 12d78b7fc9..6c0c7a9d67 100644
--- a/bsd-user/freebsd/os-proc.c
+++ b/bsd-user/freebsd/os-proc.c
@@ -255,3 +255,225 @@ execve_end:
return ret;
}
+#include <sys/procctl.h>
+
+static abi_long
+t2h_procctl_cmd(int target_cmd, int *host_cmd)
+{
+ switch (target_cmd) {
+ case TARGET_PROC_SPROTECT:
+ *host_cmd = PROC_SPROTECT;
+ break;
+
+ case TARGET_PROC_REAP_ACQUIRE:
+ *host_cmd = PROC_REAP_ACQUIRE;
+ break;
+
+ case TARGET_PROC_REAP_RELEASE:
+ *host_cmd = PROC_REAP_RELEASE;
+ break;
+
+ case TARGET_PROC_REAP_STATUS:
+ *host_cmd = PROC_REAP_STATUS;
+ break;
+
+ case TARGET_PROC_REAP_KILL:
+ *host_cmd = PROC_REAP_KILL;
+ break;
+
+ default:
+ return -TARGET_EINVAL;
+ }
+
+ return 0;
+}
+
+static abi_long
+h2t_reaper_status(struct procctl_reaper_status *host_rs,
+ abi_ulong target_rs_addr)
+{
+ struct target_procctl_reaper_status *target_rs;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_rs, target_rs_addr, 0)) {
+ return -TARGET_EFAULT;
+ }
+ __put_user(host_rs->rs_flags, &target_rs->rs_flags);
+ __put_user(host_rs->rs_children, &target_rs->rs_children);
+ __put_user(host_rs->rs_descendants, &target_rs->rs_descendants);
+ __put_user(host_rs->rs_reaper, &target_rs->rs_reaper);
+ __put_user(host_rs->rs_pid, &target_rs->rs_pid);
+ unlock_user_struct(target_rs, target_rs_addr, 1);
+
+ return 0;
+}
+
+static abi_long
+t2h_reaper_kill(abi_ulong target_rk_addr, struct procctl_reaper_kill *host_rk)
+{
+ struct target_procctl_reaper_kill *target_rk;
+
+ if (!lock_user_struct(VERIFY_READ, target_rk, target_rk_addr, 1)) {
+ return -TARGET_EFAULT;
+ }
+ __get_user(host_rk->rk_sig, &target_rk->rk_sig);
+ __get_user(host_rk->rk_flags, &target_rk->rk_flags);
+ __get_user(host_rk->rk_subtree, &target_rk->rk_subtree);
+ __get_user(host_rk->rk_killed, &target_rk->rk_killed);
+ __get_user(host_rk->rk_fpid, &target_rk->rk_fpid);
+ unlock_user_struct(target_rk, target_rk_addr, 0);
+
+ return 0;
+}
+
+static abi_long
+h2t_reaper_kill(struct procctl_reaper_kill *host_rk, abi_ulong target_rk_addr)
+{
+ struct target_procctl_reaper_kill *target_rk;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_rk, target_rk_addr, 0)) {
+ return -TARGET_EFAULT;
+ }
+ __put_user(host_rk->rk_sig, &target_rk->rk_sig);
+ __put_user(host_rk->rk_flags, &target_rk->rk_flags);
+ __put_user(host_rk->rk_subtree, &target_rk->rk_subtree);
+ __put_user(host_rk->rk_killed, &target_rk->rk_killed);
+ __put_user(host_rk->rk_fpid, &target_rk->rk_fpid);
+ unlock_user_struct(target_rk, target_rk_addr, 1);
+
+ return 0;
+}
+
+static abi_long
+h2t_procctl_reaper_pidinfo(struct procctl_reaper_pidinfo *host_pi,
+ abi_ulong target_pi_addr)
+{
+ struct target_procctl_reaper_pidinfo *target_pi;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_pi, target_pi_addr, 0)) {
+ return -TARGET_EFAULT;
+ }
+ __put_user(host_pi->pi_pid, &target_pi->pi_pid);
+ __put_user(host_pi->pi_subtree, &target_pi->pi_subtree);
+ __put_user(host_pi->pi_flags, &target_pi->pi_flags);
+ unlock_user_struct(target_pi, target_pi_addr, 1);
+
+ return 0;
+}
+
+abi_long
+do_freebsd_procctl(void *cpu_env, int idtype, abi_ulong arg2, abi_ulong arg3,
+ abi_ulong arg4, abi_ulong arg5, abi_ulong arg6)
+{
+ abi_long error = 0, target_rp_pids;
+ void *data;
+ int host_cmd, flags;
+ uint32_t u, target_rp_count;
+ g_autofree union {
+ struct procctl_reaper_status rs;
+ struct procctl_reaper_pids rp;
+ struct procctl_reaper_kill rk;
+ } host;
+ struct target_procctl_reaper_pids *target_rp;
+ id_t id; /* 64-bit */
+ int target_cmd;
+ abi_ulong target_arg;
+
+#if TARGET_ABI_BITS == 32
+ /* See if we need to align the register pairs. */
+ if (regpairs_aligned(cpu_env)) {
+ id = (id_t)target_arg64(arg3, arg4);
+ target_cmd = (int)arg5;
+ target_arg = arg6;
+ } else {
+ id = (id_t)target_arg64(arg2, arg3);
+ target_cmd = (int)arg4;
+ target_arg = arg5;
+ }
+#else
+ id = (id_t)arg2;
+ target_cmd = (int)arg3;
+ target_arg = arg4;
+#endif
+
+ error = t2h_procctl_cmd(target_cmd, &host_cmd);
+ if (error) {
+ return error;
+ }
+ switch (host_cmd) {
+ case PROC_SPROTECT:
+ data = &flags;
+ break;
+
+ case PROC_REAP_ACQUIRE:
+ case PROC_REAP_RELEASE:
+ if (target_arg == 0) {
+ data = NULL;
+ } else {
+ error = -TARGET_EINVAL;
+ }
+ break;
+
+ case PROC_REAP_STATUS:
+ data = &host.rs;
+ break;
+
+ case PROC_REAP_GETPIDS:
+ if (!lock_user_struct(VERIFY_READ, target_rp, target_arg, 1)) {
+ return -TARGET_EFAULT;
+ }
+ __get_user(target_rp_count, &target_rp->rp_count);
+ __get_user(target_rp_pids, &target_rp->rp_pids);
+ unlock_user_struct(target_rp, target_arg, 0);
+ host.rp.rp_count = target_rp_count;
+ host.rp.rp_pids = g_try_new(struct
procctl_reaper_pidinfo,target_rp_count);
+
+ if (host.rp.rp_pids == NULL) {
+ error = -TARGET_ENOMEM;
+ } else {
+ data = &host.rp;
+ }
+ break;
+
+ case PROC_REAP_KILL:
+ error = t2h_reaper_kill(target_arg, &host.rk);
+ break;
+ }
+
+ if (error) {
+ return error;
+ }
+ error = get_errno(procctl(idtype, id, host_cmd, data));
+
+ if (error) {
+ return error;
+ }
+ switch (host_cmd) {
+ case PROC_SPROTECT:
+ if (put_user_s32(flags, target_arg)) {
+ return -TARGET_EFAULT;
+ }
+ break;
+
+ case PROC_REAP_STATUS:
+ error = h2t_reaper_status(&host.rs, target_arg);
+ break;
+
+ case PROC_REAP_GETPIDS:
+ /* copyout reaper pidinfo */
+ for (u = 0; u < target_rp_count; u++) {
+ error = h2t_procctl_reaper_pidinfo(&host.rp.rp_pids[u],
+ target_rp_pids +
+ (u * sizeof(struct target_procctl_reaper_pidinfo)));
+ if (error) {
+ break;
+ }
+ }
+ break;
+
+ case PROC_REAP_KILL:
+ error = h2t_reaper_kill(&host.rk, target_arg);
+ break;
+ }
+
+ return error;
+}
diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c
index 71a2657dd0..b7bd0b92a6 100644
--- a/bsd-user/freebsd/os-syscall.c
+++ b/bsd-user/freebsd/os-syscall.c
@@ -367,6 +367,9 @@ static abi_long freebsd_syscall(void *cpu_env, int num,
abi_long arg1,
ret = do_bsd_setpriority(arg1, arg2, arg3);
break;
+ case TARGET_FREEBSD_NR_procctl: /* procctl(2) */
+ ret = do_freebsd_procctl(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6);
+ break;
/*
* File system calls.
--
2.42.0
