From 8cb762fe013a4368fc7aa2eba27c44033ec310e0 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Tue, 6 Dec 2016 16:24:03 +0100 Subject: linux-user: Handle TIOCSTART and TIOCSTOP Some architectures (ppc, alpha, sparc, parisc, sh and xtensa) define the BSD TIOCSTART and TIOCSTOP ioctls in their kernel headers to provide compatibility to other operating systems. Those ioctls are not implemented in Linux, nevertheless, bash will use this ioctl if it's available on those architectures. To avoid false warnings, add code to simply ignore those ioctls. Signed-off-by: Helge Deller Message-Id: <20161206152403.GA6651@ls3530> Signed-off-by: Richard Henderson --- linux-user/ioctls.h | 5 +++++ linux-user/syscall.c | 6 ++++++ 2 files changed, 11 insertions(+) (limited to 'linux-user') diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h index 1bad701..eaf6fe6 100644 --- a/linux-user/ioctls.h +++ b/linux-user/ioctls.h @@ -422,3 +422,8 @@ MK_PTR(MK_STRUCT(STRUCT_rtentry))) IOCTL_SPECIAL(SIOCDELRT, IOC_W, do_ioctl_rt, MK_PTR(MK_STRUCT(STRUCT_rtentry))) + +#ifdef TARGET_TIOCSTART + IOCTL_IGNORE(TIOCSTART) + IOCTL_IGNORE(TIOCSTOP) +#endif diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 7b77503..acb004f 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -5453,6 +5453,8 @@ static IOCTLEntry ioctl_entries[] = { { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } }, #define IOCTL_SPECIAL(cmd, access, dofn, ...) \ { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } }, +#define IOCTL_IGNORE(cmd) \ + { TARGET_ ## cmd, 0, #cmd }, #include "ioctls.h" { 0, 0, }, }; @@ -5484,6 +5486,10 @@ static abi_long do_ioctl(int fd, int cmd, abi_long arg) #endif if (ie->do_ioctl) { return ie->do_ioctl(ie, buf_temp, fd, cmd, arg); + } else if (!ie->host_cmd) { + /* Some architectures define BSD ioctls in their headers + that are not implemented in Linux. */ + return -TARGET_ENOSYS; } switch(arg_type[0]) { -- cgit v1.1