[libvirt PATCH v2 5/5] wireshark: fix compilation errors
Pavel Hrdina
phrdina at redhat.com
Fri Jul 10 10:25:06 UTC 2020
With meson introduction which is using the same CFLAGS for the whole
project some compilation errors were discovered. The wireshark plugin
library is the only one in tools directory that is not using AM_CFLAGS.
With the AM_CFLAGS we get these errors:
../../tools/wireshark/src/packet-libvirt.c: In function 'dissect_libvirt_fds':
../../tools/wireshark/src/packet-libvirt.c:348:31: error: unused parameter 'tvb' [-Werror=unused-parameter]
348 | dissect_libvirt_fds(tvbuff_t *tvb, gint start, gint32 nfds)
| ~~~~~~~~~~^~~
../../tools/wireshark/src/packet-libvirt.c:348:41: error: unused parameter 'start' [-Werror=unused-parameter]
348 | dissect_libvirt_fds(tvbuff_t *tvb, gint start, gint32 nfds)
| ~~~~~^~~~~
../../tools/wireshark/src/packet-libvirt.c:348:55: error: unused parameter 'nfds' [-Werror=unused-parameter]
348 | dissect_libvirt_fds(tvbuff_t *tvb, gint start, gint32 nfds)
| ~~~~~~~^~~~
At top level:
../../tools/wireshark/src/packet-libvirt.c:64:5: error: 'dissect_xdr_bool' defined but not used [-Werror=unused-function]
64 | dissect_xdr_##xtype(tvbuff_t *tvb, proto_tree *tree, XDR *xdrs, int hf) \
| ^~~~~~~~~~~~
../../tools/wireshark/src/packet-libvirt.c:88:1: note: in expansion of macro 'XDR_PRIMITIVE_DISSECTOR'
88 | XDR_PRIMITIVE_DISSECTOR(bool, bool_t, boolean)
| ^~~~~~~~~~~~~~~~~~~~~~~
../../tools/wireshark/src/packet-libvirt.c:64:5: error: 'dissect_xdr_float' defined but not used [-Werror=unused-function]
64 | dissect_xdr_##xtype(tvbuff_t *tvb, proto_tree *tree, XDR *xdrs, int hf) \
| ^~~~~~~~~~~~
../../tools/wireshark/src/packet-libvirt.c:86:1: note: in expansion of macro 'XDR_PRIMITIVE_DISSECTOR'
86 | XDR_PRIMITIVE_DISSECTOR(float, gfloat, float)
| ^~~~~~~~~~~~~~~~~~~~~~~
../../tools/wireshark/src/packet-libvirt.c:64:5: error: 'dissect_xdr_short' defined but not used [-Werror=unused-function]
64 | dissect_xdr_##xtype(tvbuff_t *tvb, proto_tree *tree, XDR *xdrs, int hf) \
| ^~~~~~~~~~~~
../../tools/wireshark/src/packet-libvirt.c:80:1: note: in expansion of macro 'XDR_PRIMITIVE_DISSECTOR'
80 | XDR_PRIMITIVE_DISSECTOR(short, gint16, int)
| ^~~~~~~~~~~~~~~~~~~~~~~
../../tools/wireshark/src/packet-libvirt.c: In function 'dissect_libvirt_message':
../../tools/wireshark/src/packet-libvirt.c:423:34: error: null pointer dereference [-Werror=null-dereference]
423 | vir_xdr_dissector_t xd = find_payload_dissector(proc, type, get_program_data(prog, VIR_PROGRAM_DISSECTORS),
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
424 | *(gsize *)get_program_data(prog, VIR_PROGRAM_DISSECTORS_LEN));
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Pavel Hrdina <phrdina at redhat.com>
---
src/internal.h | 4 ++++
tools/Makefile.am | 2 +-
tools/wireshark/src/packet-libvirt.c | 17 ++++++++++++++---
3 files changed, 19 insertions(+), 4 deletions(-)
diff --git a/src/internal.h b/src/internal.h
index c054e3ce96f..3bab6b4bfe0 100644
--- a/src/internal.h
+++ b/src/internal.h
@@ -174,6 +174,10 @@
_Pragma ("GCC diagnostic push")
#endif
+#define VIR_WARNINGS_NO_UNUSED_FUNCTION \
+ _Pragma ("GCC diagnostic push") \
+ _Pragma ("GCC diagnostic ignored \"-Wunused-function\"")
+
/* Workaround bogus GCC 6.0 for logical 'or' equal expression warnings.
* (GCC bz 69602) */
#if BROKEN_GCC_WLOGICALOP_EQUAL_EXPR
diff --git a/tools/Makefile.am b/tools/Makefile.am
index 53df930e0ac..eb8f269b486 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -378,7 +378,7 @@ if WITH_WIRESHARK_DISSECTOR
ws_plugin_LTLIBRARIES = wireshark/src/libvirt.la
wireshark_src_libvirt_la_CFLAGS = \
- -I wireshark/src $(WIRESHARK_DISSECTOR_CFLAGS) $(XDR_CFLAGS)
+ -I wireshark/src $(WIRESHARK_DISSECTOR_CFLAGS) $(XDR_CFLAGS) $(AM_CFLAGS)
wireshark_src_libvirt_la_LDFLAGS = -avoid-version -module
wireshark_src_libvirt_la_SOURCES = \
wireshark/src/packet-libvirt.h \
diff --git a/tools/wireshark/src/packet-libvirt.c b/tools/wireshark/src/packet-libvirt.c
index 20b7a3ec812..2b499d2cf29 100644
--- a/tools/wireshark/src/packet-libvirt.c
+++ b/tools/wireshark/src/packet-libvirt.c
@@ -75,6 +75,8 @@ static gint ett_libvirt_stream_hole = -1;
} \
}
+VIR_WARNINGS_NO_UNUSED_FUNCTION
+
XDR_PRIMITIVE_DISSECTOR(int, gint32, int)
XDR_PRIMITIVE_DISSECTOR(u_int, guint32, uint)
XDR_PRIMITIVE_DISSECTOR(short, gint16, int)
@@ -87,6 +89,8 @@ XDR_PRIMITIVE_DISSECTOR(float, gfloat, float)
XDR_PRIMITIVE_DISSECTOR(double, gdouble, double)
XDR_PRIMITIVE_DISSECTOR(bool, bool_t, boolean)
+VIR_WARNINGS_RESET
+
typedef gboolean (*vir_xdr_dissector_t)(tvbuff_t *tvb, proto_tree *tree, XDR *xdrs, int hf);
typedef struct vir_dissector_index vir_dissector_index_t;
@@ -345,7 +349,9 @@ dissect_libvirt_num_of_fds(tvbuff_t *tvb, proto_tree *tree)
}
static void
-dissect_libvirt_fds(tvbuff_t *tvb, gint start, gint32 nfds)
+dissect_libvirt_fds(tvbuff_t *tvb G_GNUC_UNUSED,
+ gint start G_GNUC_UNUSED,
+ gint32 nfds G_GNUC_UNUSED)
{
/* TODO: NOP for now */
}
@@ -420,8 +426,13 @@ dissect_libvirt_payload(tvbuff_t *tvb, proto_tree *tree,
return; /* No payload */
if (status == VIR_NET_OK) {
- vir_xdr_dissector_t xd = find_payload_dissector(proc, type, get_program_data(prog, VIR_PROGRAM_DISSECTORS),
- *(gsize *)get_program_data(prog, VIR_PROGRAM_DISSECTORS_LEN));
+ const vir_dissector_index_t *pds = get_program_data(prog, VIR_PROGRAM_DISSECTORS);
+ const gsize *len = get_program_data(prog, VIR_PROGRAM_DISSECTORS_LEN);
+
+ if (!len)
+ goto unknown;
+
+ vir_xdr_dissector_t xd = find_payload_dissector(proc, type, pds, *len);
if (xd == NULL)
goto unknown;
dissect_libvirt_payload_xdr_data(tvb, tree, payload_length, status, xd);
--
2.26.2
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