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authorDaniel P. Berrangé <berrange@redhat.com>2019-07-18 15:06:41 +0200
committerLaurent Vivier <laurent@vivier.eu>2019-07-19 09:33:55 +0200
commit6d5d5dde9adb5acb32e6b8e3dfbf47fff0f308d2 (patch)
tree21ea2ca630f08a56b9411bb1fbe83e6e8d49a1f4 /linux-user/ioctls.h
parent0acd4ab849827bbc20402e01c9da088207c0d236 (diff)
linux-user: fix to handle variably sized SIOCGSTAMP with new kernels
The SIOCGSTAMP symbol was previously defined in the asm-generic/sockios.h header file. QEMU sees that header indirectly via sys/socket.h In linux kernel commit 0768e17073dc527ccd18ed5f96ce85f9985e9115 the asm-generic/sockios.h header no longer defines SIOCGSTAMP. Instead it provides only SIOCGSTAMP_OLD, which only uses a 32-bit time_t on 32-bit architectures. The linux/sockios.h header then defines SIOCGSTAMP using either SIOCGSTAMP_OLD or SIOCGSTAMP_NEW as appropriate. If SIOCGSTAMP_NEW is used, then the tv_sec field is 64-bit even on 32-bit architectures To cope with this we must now convert the old and new type from the target to the host one. Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Message-Id: <20190718130641.15294-1-laurent@vivier.eu> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'linux-user/ioctls.h')
-rw-r--r--linux-user/ioctls.h21
1 files changed, 19 insertions, 2 deletions
diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h
index 5e84dc7c3a..3281c97ca2 100644
--- a/linux-user/ioctls.h
+++ b/linux-user/ioctls.h
@@ -222,8 +222,25 @@
IOCTL(SIOCGIWNAME, IOC_W | IOC_R, MK_PTR(MK_STRUCT(STRUCT_char_ifreq)))
IOCTL(SIOCSPGRP, IOC_W, MK_PTR(TYPE_INT)) /* pid_t */
IOCTL(SIOCGPGRP, IOC_R, MK_PTR(TYPE_INT)) /* pid_t */
- IOCTL(SIOCGSTAMP, IOC_R, MK_PTR(MK_STRUCT(STRUCT_timeval)))
- IOCTL(SIOCGSTAMPNS, IOC_R, MK_PTR(MK_STRUCT(STRUCT_timespec)))
+
+ /*
+ * We can't use IOCTL_SPECIAL() because it will set
+ * host_cmd to XXX_OLD and XXX_NEW and these macros
+ * are not defined with kernel prior to 5.2.
+ * We must set host_cmd to the same value as in target_cmd
+ * otherwise the consistency check in syscall_init()
+ * will trigger an error.
+ * host_cmd is ignored by the do_ioctl_XXX() helpers.
+ * FIXME: create a macro to define this kind of entry
+ */
+ { TARGET_SIOCGSTAMP_OLD, TARGET_SIOCGSTAMP_OLD,
+ "SIOCGSTAMP_OLD", IOC_R, do_ioctl_SIOCGSTAMP },
+ { TARGET_SIOCGSTAMPNS_OLD, TARGET_SIOCGSTAMPNS_OLD,
+ "SIOCGSTAMPNS_OLD", IOC_R, do_ioctl_SIOCGSTAMPNS },
+ { TARGET_SIOCGSTAMP_NEW, TARGET_SIOCGSTAMP_NEW,
+ "SIOCGSTAMP_NEW", IOC_R, do_ioctl_SIOCGSTAMP },
+ { TARGET_SIOCGSTAMPNS_NEW, TARGET_SIOCGSTAMPNS_NEW,
+ "SIOCGSTAMPNS_NEW", IOC_R, do_ioctl_SIOCGSTAMPNS },
IOCTL(RNDGETENTCNT, IOC_R, MK_PTR(TYPE_INT))
IOCTL(RNDADDTOENTCNT, IOC_W, MK_PTR(TYPE_INT))