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linux-user: Handle TIOCSTART and TIOCSTOP

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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 <deller@gmx.de>
Message-Id: <20161206152403.GA6651@ls3530>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Helge Deller 2016-12-06 16:24:03 +01:00 • committed by Richard Henderson
parent 7c4ee5bcc8
commit 8cb762fe01
2 changed files with 11 additions and 0 deletions
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6
linux-user/syscall.c
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@ -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]) {