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linux-user: Add most IFTUN ioctls

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The three options handling `struct sock_fprog` (TUNATTACHFILTER,
TUNDETACHFILTER, and TUNGETFILTER) are not implemented. Linux kernel
keeps a user space pointer in them which we cannot correctly handle.

Signed-off-by: Josh Kunz <jkz@google.com>
Signed-off-by: Shu-Chun Weng <scw@google.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200929014801.655524-1-scw@google.com>
[lv: use 0 size in unlock_user()]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Shu-Chun Weng
2020-09-28 18:48:01 -07:00
committed by Laurent Vivier
parent 8494645797
commit 6addf06a3c
3 changed files with 115 additions and 0 deletions
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linux-user/ioctls.h
+46
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@@ -720,3 +720,49 @@
IOCTL(KCOV_DISABLE, 0, TYPE_NULL)
IOCTL(KCOV_INIT_TRACE, IOC_R, TYPE_ULONG)
#endif
IOCTL(TUNSETDEBUG, IOC_W, TYPE_INT)
IOCTL(TUNSETIFF, IOC_RW, MK_PTR(MK_STRUCT(STRUCT_short_ifreq)))
IOCTL(TUNSETPERSIST, IOC_W, TYPE_INT)
IOCTL(TUNSETOWNER, IOC_W, TYPE_INT)
IOCTL(TUNSETLINK, IOC_W, TYPE_INT)
IOCTL(TUNSETGROUP, IOC_W, TYPE_INT)
IOCTL(TUNGETFEATURES, IOC_R, MK_PTR(TYPE_INT))
IOCTL(TUNSETOFFLOAD, IOC_W, TYPE_LONG)
IOCTL_SPECIAL(TUNSETTXFILTER, IOC_W, do_ioctl_TUNSETTXFILTER,
/*
* We can't represent `struct tun_filter` in thunk so leaving
* it uninterpreted. do_ioctl_TUNSETTXFILTER will do the
* conversion.
*/
TYPE_PTRVOID)
IOCTL(TUNGETIFF, IOC_R, MK_PTR(MK_STRUCT(STRUCT_short_ifreq)))
IOCTL(TUNGETSNDBUF, IOC_R, MK_PTR(TYPE_INT))
IOCTL(TUNSETSNDBUF, IOC_W, MK_PTR(TYPE_INT))
/*
* TUNATTACHFILTER and TUNDETACHFILTER are not supported. Linux kernel keeps a
* user pointer in TUNATTACHFILTER, which we are not able to correctly handle.
*/
IOCTL(TUNGETVNETHDRSZ, IOC_R, MK_PTR(TYPE_INT))
IOCTL(TUNSETVNETHDRSZ, IOC_W, MK_PTR(TYPE_INT))
IOCTL(TUNSETQUEUE, IOC_W, MK_PTR(MK_STRUCT(STRUCT_short_ifreq)))
IOCTL(TUNSETIFINDEX , IOC_W, MK_PTR(TYPE_INT))
/* TUNGETFILTER is not supported: see TUNATTACHFILTER. */
IOCTL(TUNSETVNETLE, IOC_W, MK_PTR(TYPE_INT))
IOCTL(TUNGETVNETLE, IOC_R, MK_PTR(TYPE_INT))
#ifdef TUNSETVNETBE
IOCTL(TUNSETVNETBE, IOC_W, MK_PTR(TYPE_INT))
IOCTL(TUNGETVNETBE, IOC_R, MK_PTR(TYPE_INT))
#endif
#ifdef TUNSETSTEERINGEBPF
IOCTL(TUNSETSTEERINGEBPF, IOC_W, MK_PTR(TYPE_INT))
#endif
#ifdef TUNSETFILTEREBPF
IOCTL(TUNSETFILTEREBPF, IOC_W, MK_PTR(TYPE_INT))
#endif
#ifdef TUNSETCARRIER
IOCTL(TUNSETCARRIER, IOC_W, MK_PTR(TYPE_INT))
#endif
#ifdef TUNGETDEVNETNS
IOCTL(TUNGETDEVNETNS, IOC_R, TYPE_NULL)
#endif