Date: Tue, 17 Mar 2020 18:44:03 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r359047 - in head: lib/libsysdecode sys/fs/procfs sys/sys Message-ID: <202003171844.02HIi3rl053168@repo.freebsd.org>
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Author: jhb Date: Tue Mar 17 18:44:03 2020 New Revision: 359047 URL: https://svnweb.freebsd.org/changeset/base/359047 Log: Mark procfs-based process debugging as deprecated for FreeBSD 13. Attempting to use ioctls on /proc/<pid>/mem to control a process will trigger warnings on the console. The <sys/pioctl.h> include file will also now emit a compile-time warning when used from userland. Reviewed by: emaste MFC after: 1 week Relnotes: yes Differential Revision: https://reviews.freebsd.org/D23822 Modified: head/lib/libsysdecode/Makefile head/sys/fs/procfs/procfs_ioctl.c head/sys/sys/pioctl.h Modified: head/lib/libsysdecode/Makefile ============================================================================== --- head/lib/libsysdecode/Makefile Tue Mar 17 18:17:32 2020 (r359046) +++ head/lib/libsysdecode/Makefile Tue Mar 17 18:44:03 2020 (r359047) @@ -121,6 +121,9 @@ CFLAGS.gcc.ioctl.c+= -Wno-redundant-decls CFLAGS.gcc+= ${CFLAGS.gcc.${.IMPSRC}} +# Ignore deprecation warning in <sys/pioctl.h> +CFLAGS.ioctl.c+= -Wno-\#warnings + DEPENDOBJS+= tables.h tables.h: mktables sh ${.CURDIR}/mktables ${SYSROOT:U${DESTDIR}}${INCLUDEDIR} ${.TARGET} Modified: head/sys/fs/procfs/procfs_ioctl.c ============================================================================== --- head/sys/fs/procfs/procfs_ioctl.c Tue Mar 17 18:17:32 2020 (r359046) +++ head/sys/fs/procfs/procfs_ioctl.c Tue Mar 17 18:44:03 2020 (r359047) @@ -69,10 +69,53 @@ procfs_ioctl(PFS_IOCTL_ARGS) #ifdef COMPAT_FREEBSD6 int ival; #endif + static struct timeval lasttime; + static struct timeval interval = { .tv_sec = 1, .tv_usec = 0 }; KASSERT(p != NULL, ("%s() called without a process", __func__)); PROC_LOCK_ASSERT(p, MA_OWNED); + + switch (cmd) { +#if defined(COMPAT_FREEBSD5) || defined(COMPAT_FREEBSD4) || defined(COMPAT_43) + case _IOC(IOC_IN, 'p', 1, 0): +#endif +#ifdef COMPAT_FREEBSD6 + case _IO('p', 1): +#endif + case PIOCBIS: +#if defined(COMPAT_FREEBSD5) || defined(COMPAT_FREEBSD4) || defined(COMPAT_43) + case _IOC(IOC_IN, 'p', 2, 0): +#endif +#ifdef COMPAT_FREEBSD6 + case _IO('p', 2): +#endif + case PIOCBIC: +#if defined(COMPAT_FREEBSD5) || defined(COMPAT_FREEBSD4) || defined(COMPAT_43) + case _IOC(IOC_IN, 'p', 3, 0): +#endif +#ifdef COMPAT_FREEBSD6 + case _IO('p', 3): +#endif + case PIOCSFL: + case PIOCGFL: + case PIOCWAIT: + case PIOCSTATUS: +#ifdef COMPAT_FREEBSD32 + case PIOCWAIT32: + case PIOCSTATUS32: +#endif +#if defined(COMPAT_FREEBSD5) || defined(COMPAT_FREEBSD4) || defined(COMPAT_43) + case _IOC(IOC_IN, 'p', 5, 0): +#endif +#ifdef COMPAT_FREEBSD6 + case _IO('p', 5): +#endif + case PIOCCONT: + if (ratecheck(&lasttime, &interval) != 0) + gone_in(13, "procfs-based process debugging"); + break; + } error = 0; switch (cmd) { Modified: head/sys/sys/pioctl.h ============================================================================== --- head/sys/sys/pioctl.h Tue Mar 17 18:17:32 2020 (r359046) +++ head/sys/sys/pioctl.h Tue Mar 17 18:44:03 2020 (r359047) @@ -41,6 +41,10 @@ #ifndef _SYS_PIOCTL_H # define _SYS_PIOCTL_H +#ifndef _KERNEL +#warning "<sys/pioctl.h> is deprecated, ptrace() should be used instead" +#endif + # include <sys/ioccom.h> struct procfs_status {
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