Date: Thu, 18 Apr 2019 19:04:07 +0000 (UTC) From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r346356 - in head: lib/libcuse sys/fs/cuse Message-ID: <201904181904.x3IJ47Qh019683@repo.freebsd.org>
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Author: hselasky Date: Thu Apr 18 19:04:07 2019 New Revision: 346356 URL: https://svnweb.freebsd.org/changeset/base/346356 Log: Implement flag for telling cuse(3) clients if the peer is running in 32-bit compat mode or not. This is useful when implementing compatibility ioctl(2) handlers in userspace. MFC after: 1 week Sponsored by: Mellanox Technologies Modified: head/lib/libcuse/cuse.3 head/sys/fs/cuse/cuse.c head/sys/fs/cuse/cuse_defs.h Modified: head/lib/libcuse/cuse.3 ============================================================================== --- head/lib/libcuse/cuse.3 Thu Apr 18 15:31:03 2019 (r346355) +++ head/lib/libcuse/cuse.3 Thu Apr 18 19:04:07 2019 (r346356) @@ -25,7 +25,7 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.Dd October 5, 2017 +.Dd April 17, 2019 .Dt CUSE 3 .Os .Sh NAME @@ -303,6 +303,7 @@ enum { CUSE_FFLAG_READ CUSE_FFLAG_WRITE CUSE_FFLAG_NONBLOCK + CUSE_FFLAG_COMPAT32 CUSE_CMD_NONE CUSE_CMD_OPEN Modified: head/sys/fs/cuse/cuse.c ============================================================================== --- head/sys/fs/cuse/cuse.c Thu Apr 18 15:31:03 2019 (r346355) +++ head/sys/fs/cuse/cuse.c Thu Apr 18 19:04:07 2019 (r346356) @@ -51,6 +51,7 @@ #include <sys/vnode.h> #include <sys/selinfo.h> #include <sys/ptrace.h> +#include <sys/sysent.h> #include <machine/bus.h> @@ -536,7 +537,10 @@ cuse_client_send_command_locked(struct cuse_client_com if (ioflag & IO_NDELAY) cuse_fflags |= CUSE_FFLAG_NONBLOCK; - +#if defined(__LP64__) + if (SV_CURPROC_FLAG(SV_ILP32)) + cuse_fflags |= CUSE_FFLAG_COMPAT32; +#endif pccmd->sub.fflags = cuse_fflags; pccmd->sub.data_pointer = data_ptr; pccmd->sub.argument = arg; Modified: head/sys/fs/cuse/cuse_defs.h ============================================================================== --- head/sys/fs/cuse/cuse_defs.h Thu Apr 18 15:31:03 2019 (r346355) +++ head/sys/fs/cuse/cuse_defs.h Thu Apr 18 19:04:07 2019 (r346356) @@ -27,7 +27,7 @@ #ifndef _CUSE_DEFS_H_ #define _CUSE_DEFS_H_ -#define CUSE_VERSION 0x000123 +#define CUSE_VERSION 0x000124 #define CUSE_ERR_NONE 0 #define CUSE_ERR_BUSY -1 @@ -49,6 +49,7 @@ #define CUSE_FFLAG_READ 1 #define CUSE_FFLAG_WRITE 2 #define CUSE_FFLAG_NONBLOCK 4 +#define CUSE_FFLAG_COMPAT32 8 /* peer is running in 32-bit compat mode */ #define CUSE_DBG_NONE 0 #define CUSE_DBG_FULL 1
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