From d3ef75b6c79e9e6d642efa9c32a96524d7a5a5b7 Mon Sep 17 00:00:00 2001 From: jhb Date: Thu, 19 Sep 2013 18:53:42 +0000 Subject: Extend the support for exempting processes from being killed when swap is exhausted. - Add a new protect(1) command that can be used to set or revoke protection from arbitrary processes. Similar to ktrace it can apply a change to all existing descendants of a process as well as future descendants. - Add a new procctl(2) system call that provides a generic interface for control operations on processes (as opposed to the debugger-specific operations provided by ptrace(2)). procctl(2) uses a combination of idtype_t and an id to identify the set of processes on which to operate similar to wait6(). - Add a PROC_SPROTECT control operation to manage the protection status of a set of processes. MADV_PROTECT still works for backwards compatability. - Add a p_flag2 to struct proc (and a corresponding ki_flag2 to kinfo_proc) the first bit of which is used to track if P_PROTECT should be inherited by new child processes. Reviewed by: kib, jilles (earlier version) Approved by: re (delphij) MFC after: 1 month --- sys/compat/freebsd32/freebsd32_misc.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'sys/compat/freebsd32/freebsd32_misc.c') diff --git a/sys/compat/freebsd32/freebsd32_misc.c b/sys/compat/freebsd32/freebsd32_misc.c index dbdafeb..deb03f3 100644 --- a/sys/compat/freebsd32/freebsd32_misc.c +++ b/sys/compat/freebsd32/freebsd32_misc.c @@ -56,6 +56,7 @@ __FBSDID("$FreeBSD$"); #include #include #include +#include #include #include #include @@ -3000,3 +3001,23 @@ convert_sigevent32(struct sigevent32 *sig32, struct sigevent *sig) } return (0); } + +int +freebsd32_procctl(struct thread *td, struct freebsd32_procctl_args *uap) +{ + void *data; + int error, flags; + + switch (uap->com) { + case PROC_SPROTECT: + error = copyin(PTRIN(uap->data), &flags, sizeof(flags)); + if (error) + return (error); + data = &flags; + break; + default: + return (EINVAL); + } + return (kern_procctl(td, uap->idtype, PAIR32TO64(id_t, uap->id), + uap->com, data)); +} -- cgit v1.1