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-rw-r--r--include/qemu-common.h4
-rw-r--r--tests/Makefile3
-rw-r--r--tests/test-cutils.c251
-rw-r--r--util/cutils.c99
4 files changed, 357 insertions, 0 deletions
diff --git a/include/qemu-common.h b/include/qemu-common.h
index af2379ff38..80016adae3 100644
--- a/include/qemu-common.h
+++ b/include/qemu-common.h
@@ -173,6 +173,10 @@ int qemu_fdatasync(int fd);
int fcntl_setfl(int fd, int flag);
int qemu_parse_fd(const char *param);
+int parse_uint(const char *s, unsigned long long *value, char **endptr,
+ int base);
+int parse_uint_full(const char *s, unsigned long long *value, int base);
+
/*
* strtosz() suffixes used to specify the default treatment of an
* argument passed to strtosz() without an explicit suffix.
diff --git a/tests/Makefile b/tests/Makefile
index 83145f5d31..a2d62b8596 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -52,6 +52,8 @@ check-unit-y += tests/test-x86-cpuid$(EXESUF)
gcov-files-test-x86-cpuid-y =
check-unit-y += tests/test-xbzrle$(EXESUF)
gcov-files-test-xbzrle-y = xbzrle.c
+check-unit-y += tests/test-cutils$(EXESUF)
+gcov-files-test-cutils-y += util/cutils.c
check-block-$(CONFIG_POSIX) += tests/qemu-iotests-quick.sh
@@ -101,6 +103,7 @@ tests/test-iov$(EXESUF): tests/test-iov.o libqemuutil.a
tests/test-hbitmap$(EXESUF): tests/test-hbitmap.o libqemuutil.a libqemustub.a
tests/test-x86-cpuid$(EXESUF): tests/test-x86-cpuid.o
tests/test-xbzrle$(EXESUF): tests/test-xbzrle.o xbzrle.o page_cache.o libqemuutil.a
+tests/test-cutils$(EXESUF): tests/test-cutils.o util/cutils.o
tests/test-qapi-types.c tests/test-qapi-types.h :\
$(SRC_PATH)/qapi-schema-test.json $(SRC_PATH)/scripts/qapi-types.py
diff --git a/tests/test-cutils.c b/tests/test-cutils.c
new file mode 100644
index 0000000000..2a4556d3aa
--- /dev/null
+++ b/tests/test-cutils.c
@@ -0,0 +1,251 @@
+/*
+ * cutils.c unit-tests
+ *
+ * Copyright (C) 2013 Red Hat Inc.
+ *
+ * Authors:
+ * Eduardo Habkost <ehabkost@redhat.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <glib.h>
+#include <errno.h>
+#include <string.h>
+
+#include "qemu-common.h"
+
+
+static void test_parse_uint_null(void)
+{
+ unsigned long long i = 999;
+ char f = 'X';
+ char *endptr = &f;
+ int r;
+
+ r = parse_uint(NULL, &i, &endptr, 0);
+
+ g_assert_cmpint(r, ==, -EINVAL);
+ g_assert_cmpint(i, ==, 0);
+ g_assert(endptr == NULL);
+}
+
+static void test_parse_uint_empty(void)
+{
+ unsigned long long i = 999;
+ char f = 'X';
+ char *endptr = &f;
+ const char *str = "";
+ int r;
+
+ r = parse_uint(str, &i, &endptr, 0);
+
+ g_assert_cmpint(r, ==, -EINVAL);
+ g_assert_cmpint(i, ==, 0);
+ g_assert(endptr == str);
+}
+
+static void test_parse_uint_whitespace(void)
+{
+ unsigned long long i = 999;
+ char f = 'X';
+ char *endptr = &f;
+ const char *str = " \t ";
+ int r;
+
+ r = parse_uint(str, &i, &endptr, 0);
+
+ g_assert_cmpint(r, ==, -EINVAL);
+ g_assert_cmpint(i, ==, 0);
+ g_assert(endptr == str);
+}
+
+
+static void test_parse_uint_invalid(void)
+{
+ unsigned long long i = 999;
+ char f = 'X';
+ char *endptr = &f;
+ const char *str = " \t xxx";
+ int r;
+
+ r = parse_uint(str, &i, &endptr, 0);
+
+ g_assert_cmpint(r, ==, -EINVAL);
+ g_assert_cmpint(i, ==, 0);
+ g_assert(endptr == str);
+}
+
+
+static void test_parse_uint_trailing(void)
+{
+ unsigned long long i = 999;
+ char f = 'X';
+ char *endptr = &f;
+ const char *str = "123xxx";
+ int r;
+
+ r = parse_uint(str, &i, &endptr, 0);
+
+ g_assert_cmpint(r, ==, 0);
+ g_assert_cmpint(i, ==, 123);
+ g_assert(endptr == str + 3);
+}
+
+static void test_parse_uint_correct(void)
+{
+ unsigned long long i = 999;
+ char f = 'X';
+ char *endptr = &f;
+ const char *str = "123";
+ int r;
+
+ r = parse_uint(str, &i, &endptr, 0);
+
+ g_assert_cmpint(r, ==, 0);
+ g_assert_cmpint(i, ==, 123);
+ g_assert(endptr == str + strlen(str));
+}
+
+static void test_parse_uint_octal(void)
+{
+ unsigned long long i = 999;
+ char f = 'X';
+ char *endptr = &f;
+ const char *str = "0123";
+ int r;
+
+ r = parse_uint(str, &i, &endptr, 0);
+
+ g_assert_cmpint(r, ==, 0);
+ g_assert_cmpint(i, ==, 0123);
+ g_assert(endptr == str + strlen(str));
+}
+
+static void test_parse_uint_decimal(void)
+{
+ unsigned long long i = 999;
+ char f = 'X';
+ char *endptr = &f;
+ const char *str = "0123";
+ int r;
+
+ r = parse_uint(str, &i, &endptr, 10);
+
+ g_assert_cmpint(r, ==, 0);
+ g_assert_cmpint(i, ==, 123);
+ g_assert(endptr == str + strlen(str));
+}
+
+
+static void test_parse_uint_llong_max(void)
+{
+ unsigned long long i = 999;
+ char f = 'X';
+ char *endptr = &f;
+ char *str = g_strdup_printf("%llu", (unsigned long long)LLONG_MAX + 1);
+ int r;
+
+ r = parse_uint(str, &i, &endptr, 0);
+
+ g_assert_cmpint(r, ==, 0);
+ g_assert_cmpint(i, ==, (unsigned long long)LLONG_MAX + 1);
+ g_assert(endptr == str + strlen(str));
+
+ g_free(str);
+}
+
+static void test_parse_uint_overflow(void)
+{
+ unsigned long long i = 999;
+ char f = 'X';
+ char *endptr = &f;
+ const char *str = "99999999999999999999999999999999999999";
+ int r;
+
+ r = parse_uint(str, &i, &endptr, 0);
+
+ g_assert_cmpint(r, ==, -ERANGE);
+ g_assert_cmpint(i, ==, ULLONG_MAX);
+ g_assert(endptr == str + strlen(str));
+}
+
+static void test_parse_uint_negative(void)
+{
+ unsigned long long i = 999;
+ char f = 'X';
+ char *endptr = &f;
+ const char *str = " \t -321";
+ int r;
+
+ r = parse_uint(str, &i, &endptr, 0);
+
+ g_assert_cmpint(r, ==, -ERANGE);
+ g_assert_cmpint(i, ==, 0);
+ g_assert(endptr == str + strlen(str));
+}
+
+
+static void test_parse_uint_full_trailing(void)
+{
+ unsigned long long i = 999;
+ const char *str = "123xxx";
+ int r;
+
+ r = parse_uint_full(str, &i, 0);
+
+ g_assert_cmpint(r, ==, -EINVAL);
+ g_assert_cmpint(i, ==, 0);
+}
+
+static void test_parse_uint_full_correct(void)
+{
+ unsigned long long i = 999;
+ const char *str = "123";
+ int r;
+
+ r = parse_uint_full(str, &i, 0);
+
+ g_assert_cmpint(r, ==, 0);
+ g_assert_cmpint(i, ==, 123);
+}
+
+int main(int argc, char **argv)
+{
+ g_test_init(&argc, &argv, NULL);
+
+ g_test_add_func("/cutils/parse_uint/null", test_parse_uint_null);
+ g_test_add_func("/cutils/parse_uint/empty", test_parse_uint_empty);
+ g_test_add_func("/cutils/parse_uint/whitespace",
+ test_parse_uint_whitespace);
+ g_test_add_func("/cutils/parse_uint/invalid", test_parse_uint_invalid);
+ g_test_add_func("/cutils/parse_uint/trailing", test_parse_uint_trailing);
+ g_test_add_func("/cutils/parse_uint/correct", test_parse_uint_correct);
+ g_test_add_func("/cutils/parse_uint/octal", test_parse_uint_octal);
+ g_test_add_func("/cutils/parse_uint/decimal", test_parse_uint_decimal);
+ g_test_add_func("/cutils/parse_uint/llong_max", test_parse_uint_llong_max);
+ g_test_add_func("/cutils/parse_uint/overflow", test_parse_uint_overflow);
+ g_test_add_func("/cutils/parse_uint/negative", test_parse_uint_negative);
+ g_test_add_func("/cutils/parse_uint_full/trailing",
+ test_parse_uint_full_trailing);
+ g_test_add_func("/cutils/parse_uint_full/correct",
+ test_parse_uint_full_correct);
+
+ return g_test_run();
+}
diff --git a/util/cutils.c b/util/cutils.c
index 80bb1dcbf7..1439da4f99 100644
--- a/util/cutils.c
+++ b/util/cutils.c
@@ -270,6 +270,105 @@ int64_t strtosz(const char *nptr, char **end)
return strtosz_suffix(nptr, end, STRTOSZ_DEFSUFFIX_MB);
}
+/**
+ * parse_uint:
+ *
+ * @s: String to parse
+ * @value: Destination for parsed integer value
+ * @endptr: Destination for pointer to first character not consumed
+ * @base: integer base, between 2 and 36 inclusive, or 0
+ *
+ * Parse unsigned integer
+ *
+ * Parsed syntax is like strtoull()'s: arbitrary whitespace, a single optional
+ * '+' or '-', an optional "0x" if @base is 0 or 16, one or more digits.
+ *
+ * If @s is null, or @base is invalid, or @s doesn't start with an
+ * integer in the syntax above, set *@value to 0, *@endptr to @s, and
+ * return -EINVAL.
+ *
+ * Set *@endptr to point right beyond the parsed integer (even if the integer
+ * overflows or is negative, all digits will be parsed and *@endptr will
+ * point right beyond them).
+ *
+ * If the integer is negative, set *@value to 0, and return -ERANGE.
+ *
+ * If the integer overflows unsigned long long, set *@value to
+ * ULLONG_MAX, and return -ERANGE.
+ *
+ * Else, set *@value to the parsed integer, and return 0.
+ */
+int parse_uint(const char *s, unsigned long long *value, char **endptr,
+ int base)
+{
+ int r = 0;
+ char *endp = (char *)s;
+ unsigned long long val = 0;
+
+ if (!s) {
+ r = -EINVAL;
+ goto out;
+ }
+
+ errno = 0;
+ val = strtoull(s, &endp, base);
+ if (errno) {
+ r = -errno;
+ goto out;
+ }
+
+ if (endp == s) {
+ r = -EINVAL;
+ goto out;
+ }
+
+ /* make sure we reject negative numbers: */
+ while (isspace((unsigned char)*s)) {
+ s++;
+ }
+ if (*s == '-') {
+ val = 0;
+ r = -ERANGE;
+ goto out;
+ }
+
+out:
+ *value = val;
+ *endptr = endp;
+ return r;
+}
+
+/**
+ * parse_uint_full:
+ *
+ * @s: String to parse
+ * @value: Destination for parsed integer value
+ * @base: integer base, between 2 and 36 inclusive, or 0
+ *
+ * Parse unsigned integer from entire string
+ *
+ * Have the same behavior of parse_uint(), but with an additional check
+ * for additional data after the parsed number. If extra characters are present
+ * after the parsed number, the function will return -EINVAL, and *@v will
+ * be set to 0.
+ */
+int parse_uint_full(const char *s, unsigned long long *value, int base)
+{
+ char *endp;
+ int r;
+
+ r = parse_uint(s, value, &endp, base);
+ if (r < 0) {
+ return r;
+ }
+ if (*endp) {
+ *value = 0;
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
int qemu_parse_fd(const char *param)
{
int fd;
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-18 15:24:31 +0000