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QAPI patches 2016-06-30

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Merge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2016-06-30' into staging

QAPI patches 2016-06-30

# gpg: Signature made Thu 30 Jun 2016 14:29:43 BST
# gpg:                using RSA key 0x3870B400EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* remotes/armbru/tags/pull-qapi-2016-06-30:
  qapi: Fix memleak in string visitors on int lists
  qapi: Simplify use of range.h
  range: Create range.c for code that should not be inline
  qapi: Fix crash on missing alternate member of QAPI struct
  checkpatch: There is no qemu_strtod()
  qobject: Correct JSON lexer grammar comments
  json-streamer: Don't leak tokens on incomplete parse

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2016-07-01 11:18:00 +01:00
parent ddf31aa853 db486cc334
commit 1fb4c13e4f
10 changed files with 143 additions and 91 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

91
include/qemu/range.h
View file

@ -1,3 +1,23 @@
/*
* QEMU 64-bit address ranges
*
* Copyright (c) 2015-2016 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef QEMU_RANGE_H
#define QEMU_RANGE_H
@ -59,75 +79,6 @@ static inline int ranges_overlap(uint64_t first1, uint64_t len1,
return !(last2 < first1 || last1 < first2);
}
/* 0,1 can merge with 1,2 but don't overlap */
static inline bool ranges_can_merge(Range *range1, Range *range2)
{
return !(range1->end < range2->begin || range2->end < range1->begin);
}
static inline int range_merge(Range *range1, Range *range2)
{
if (ranges_can_merge(range1, range2)) {
if (range1->end < range2->end) {
range1->end = range2->end;
}
if (range1->begin > range2->begin) {
range1->begin = range2->begin;
}
return 0;
}
return -1;
}
static inline GList *g_list_insert_sorted_merged(GList *list,
gpointer data,
GCompareFunc func)
{
GList *l, *next = NULL;
Range *r, *nextr;
if (!list) {
list = g_list_insert_sorted(list, data, func);
return list;
}
nextr = data;
l = list;
while (l && l != next && nextr) {
r = l->data;
if (ranges_can_merge(r, nextr)) {
range_merge(r, nextr);
l = g_list_remove_link(l, next);
next = g_list_next(l);
if (next) {
nextr = next->data;
} else {
nextr = NULL;
}
} else {
l = g_list_next(l);
}
}
if (!l) {
list = g_list_insert_sorted(list, data, func);
}
return list;
}
static inline gint range_compare(gconstpointer a, gconstpointer b)
{
Range *ra = (Range *)a, *rb = (Range *)b;
if (ra->begin == rb->begin && ra->end == rb->end) {
return 0;
} else if (range_get_last(ra->begin, ra->end) <
range_get_last(rb->begin, rb->end)) {
return -1;
} else {
return 1;
}
}
GList *range_list_insert(GList *list, Range *data);
#endif

17
qapi/string-input-visitor.c
View file

@ -61,8 +61,7 @@ static int parse_str(StringInputVisitor *siv, const char *name, Error **errp)
cur = g_malloc0(sizeof(*cur));
cur->begin = start;
cur->end = start + 1;
siv->ranges = g_list_insert_sorted_merged(siv->ranges, cur,
range_compare);
siv->ranges = range_list_insert(siv->ranges, cur);
cur = NULL;
str = NULL;
} else if (*endptr == '-') {
@ -76,10 +75,7 @@ static int parse_str(StringInputVisitor *siv, const char *name, Error **errp)
cur = g_malloc0(sizeof(*cur));
cur->begin = start;
cur->end = end + 1;
siv->ranges =
g_list_insert_sorted_merged(siv->ranges,
cur,
range_compare);
siv->ranges = range_list_insert(siv->ranges, cur);
cur = NULL;
str = NULL;
} else if (*endptr == ',') {
@ -87,10 +83,7 @@ static int parse_str(StringInputVisitor *siv, const char *name, Error **errp)
cur = g_malloc0(sizeof(*cur));
cur->begin = start;
cur->end = end + 1;
siv->ranges =
g_list_insert_sorted_merged(siv->ranges,
cur,
range_compare);
siv->ranges = range_list_insert(siv->ranges, cur);
cur = NULL;
} else {
goto error;
@ -103,9 +96,7 @@ static int parse_str(StringInputVisitor *siv, const char *name, Error **errp)
cur = g_malloc0(sizeof(*cur));
cur->begin = start;
cur->end = start + 1;
siv->ranges = g_list_insert_sorted_merged(siv->ranges,
cur,
range_compare);
siv->ranges = range_list_insert(siv->ranges, cur);
cur = NULL;
} else {
goto error;

4
qapi/string-output-visitor.c
View file

@ -85,7 +85,7 @@ static void string_output_append(StringOutputVisitor *sov, int64_t a)
Range *r = g_malloc0(sizeof(*r));
r->begin = a;
r->end = a + 1;
sov->ranges = g_list_insert_sorted_merged(sov->ranges, r, range_compare);
sov->ranges = range_list_insert(sov->ranges, r);
}
static void string_output_append_range(StringOutputVisitor *sov,
@ -94,7 +94,7 @@ static void string_output_append_range(StringOutputVisitor *sov,
Range *r = g_malloc0(sizeof(*r));
r->begin = s;
r->end = e + 1;
sov->ranges = g_list_insert_sorted_merged(sov->ranges, r, range_compare);
sov->ranges = range_list_insert(sov->ranges, r);
}
static void format_string(StringOutputVisitor *sov, Range *r, bool next,

19
qobject/json-lexer.c
View file

@ -18,11 +18,20 @@
#define MAX_TOKEN_SIZE (64ULL << 20)
/*
* \"([^\\\"]|(\\\"\\'\\\\\\/\\b\\f\\n\\r\\t\\u[0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F]))*\"
* '([^\\']|(\\\"\\'\\\\\\/\\b\\f\\n\\r\\t\\u[0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F]))*'
* 0|([1-9][0-9]*(.[0-9]+)?([eE]([-+])?[0-9]+))
* Required by JSON (RFC 7159):
*
* \"([^\\\"]|\\[\"'\\/bfnrt]|\\u[0-9a-fA-F]{4})*\"
* -?(0|[1-9][0-9]*)(.[0-9]+)?([eE][-+]?[0-9]+)?
* [{}\[\],:]
* [a-z]+
* [a-z]+ # covers null, true, false
*
* Extension of '' strings:
*
* '([^\\']|\\[\"'\\/bfnrt]|\\u[0-9a-fA-F]{4})*'
*
* Extension for vararg handling in JSON construction:
*
* %((l|ll|I64)?d|[ipsf])
*
*/
@ -213,7 +222,7 @@ static const uint8_t json_lexer[][256] = {
['\t'] = IN_WHITESPACE,
['\r'] = IN_WHITESPACE,
['\n'] = IN_WHITESPACE,
},
},
/* escape */
[IN_ESCAPE_LL] = {

6
qobject/json-streamer.c
View file

@ -20,9 +20,15 @@
#define MAX_TOKEN_COUNT (2ULL << 20)
#define MAX_NESTING (1ULL << 10)
static void json_message_free_token(void *token, void *opaque)
{
g_free(token);
}
static void json_message_free_tokens(JSONMessageParser *parser)
{
if (parser->tokens) {
g_queue_foreach(parser->tokens, json_message_free_token, NULL);
g_queue_free(parser->tokens);
parser->tokens = NULL;
}

2
scripts/checkpatch.pl
View file

@ -2453,7 +2453,7 @@ sub process {
}
# recommend qemu_strto* over strto* for numeric conversions
if ($line =~ /\b(strto[^k].*?)\s*\(/) {
if ($line =~ /\b(strto[^kd].*?)\s*\(/) {
WARN("consider using qemu_$1 in preference to $1\n" . $herecurr);
}
# check for module_init(), use category-specific init macros explicitly please

6
scripts/qapi-visit.py
View file

@ -172,6 +172,9 @@ void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_name)s **obj, Error
if (err) {
goto out;
}
if (!*obj) {
goto out_obj;
}
switch ((*obj)->type) {
''',
c_name=c_name(name), promote_int=promote_int)
@ -206,10 +209,13 @@ void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_name)s **obj, Error
''')
ret += mcgen('''
case QTYPE_NONE:
abort();
default:
error_setg(&err, QERR_INVALID_PARAMETER_TYPE, name ? name : "null",
"%(name)s");
}
out_obj:
visit_end_alternate(v);
if (err && visit_is_input(v)) {
qapi_free_%(c_name)s(*obj);

12
tests/test-qmp-input-visitor.c
View file

@ -766,6 +766,8 @@ static void test_visitor_in_errors(TestInputVisitorData *data,
Error *err = NULL;
Visitor *v;
strList *q = NULL;
UserDefTwo *r = NULL;
WrapAlternate *s = NULL;
v = visitor_input_test_init(data, "{ 'integer': false, 'boolean': 'foo', "
"'string': -42 }");
@ -778,6 +780,16 @@ static void test_visitor_in_errors(TestInputVisitorData *data,
visit_type_strList(v, NULL, &q, &err);
error_free_or_abort(&err);
assert(!q);
v = visitor_input_test_init(data, "{ 'str':'hi' }");
visit_type_UserDefTwo(v, NULL, &r, &err);
error_free_or_abort(&err);
assert(!r);
v = visitor_input_test_init(data, "{ }");
visit_type_WrapAlternate(v, NULL, &s, &err);
error_free_or_abort(&err);
assert(!s);
}
static void test_visitor_in_wrong_type(TestInputVisitorData *data,

1
util/Makefile.objs
View file

@ -34,3 +34,4 @@ util-obj-y += base64.o
util-obj-y += log.o
util-obj-y += qdist.o
util-obj-y += qht.o
util-obj-y += range.o

76
util/range.c Normal file
View file

@ -0,0 +1,76 @@
/*
* QEMU 64-bit address ranges
*
* Copyright (c) 2015-2016 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include "qemu/osdep.h"
#include "qemu/range.h"
/*
* Operations on 64 bit address ranges.
* Notes:
* - ranges must not wrap around 0, but can include the last byte ~0x0LL.
* - this can not represent a full 0 to ~0x0LL range.
*/
/* Return -1 if @a < @b, 1 if greater, and 0 if they touch or overlap. */
static inline int range_compare(Range *a, Range *b)
{
/* Zero a->end is 2**64, and therefore not less than any b->begin */
if (a->end && a->end < b->begin) {
return -1;
}
if (b->end && a->begin > b->end) {
return 1;
}
return 0;
}
/* Insert @data into @list of ranges; caller no longer owns @data */
GList *range_list_insert(GList *list, Range *data)
{
GList *l;
/* Range lists require no empty ranges */
assert(data->begin < data->end || (data->begin && !data->end));
/* Skip all list elements strictly less than data */
for (l = list; l && range_compare(l->data, data) < 0; l = l->next) {
}
if (!l || range_compare(l->data, data) > 0) {
/* Rest of the list (if any) is strictly greater than @data */
return g_list_insert_before(list, l, data);
}
/* Current list element overlaps @data, merge the two */
range_extend(l->data, data);
g_free(data);
/* Merge any subsequent list elements that now also overlap */
while (l->next && range_compare(l->data, l->next->data) == 0) {
GList *new_l;
range_extend(l->data, l->next->data);
g_free(l->next->data);
new_l = g_list_delete_link(list, l->next);
assert(new_l == list);
}
return list;
}