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util: indicate truncated Unix socket path in UTI_SockaddrToString()

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Specify the maximum length of the path in the snprintf() format to avoid
a new gcc warning (-Wformat-truncation). If the path doesn't fit in the
buffer, indicate with the '>' symbol that it was truncated. The function
is used only for debug messages.
This commit is contained in:
Miroslav Lichvar
2017-04-05 11:20:22 +02:00
parent f8f9100a0d
commit 935d855b47
2 changed files with 22 additions and 3 deletions
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17
test/unit/util.c
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@@ -4,10 +4,11 @@
void test_unit(void) {
NTP_int64 ntp_ts, ntp_fuzz;
struct timespec ts, ts2;
struct sockaddr_un sun;
double x, y;
Float f;
int i, j, c;
char buf[16];
char buf[16], *s;
for (i = -31; i < 31; i++) {
x = pow(2.0, i);
@@ -145,4 +146,18 @@ void test_unit(void) {
c++;
}
TEST_CHECK(c > 46000 && c < 48000);
for (i = 1; i < 2 * BUFFER_LENGTH; i++) {
sun.sun_family = AF_UNIX;
for (j = 0; j + 1 < i && j + 1 < sizeof (sun.sun_path); j++)
sun.sun_path[j] = 'A' + j % 26;
sun.sun_path[j] = '\0';
s = UTI_SockaddrToString((struct sockaddr *)&sun);
if (i <= BUFFER_LENGTH) {
TEST_CHECK(!strcmp(s, sun.sun_path));
} else {
TEST_CHECK(!strncmp(s, sun.sun_path, BUFFER_LENGTH - 2));
TEST_CHECK(s[BUFFER_LENGTH - 2] == '>');
}
}
}