Revert "tree-wide: use sizeof on static arrays"

This reverts commit 81a3bb6.

This commit broke all builders running with pid_max > 32768.

Reverting for now so we can bring the build farm back online.

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>

src/lxc/caps.c

@@ -299,7 +299,7 @@ static long int _real_caps_last_cap(void)
 		char buf[INTTYPE_TO_STRLEN(int)];
 
 	again:
-		n = read(fd, buf, sizeof(buf));
+		n = read(fd, buf, INTTYPE_TO_STRLEN(int));
 		if (n < 0 && errno == EINTR) {
 			goto again;
 		} else if (n >= 0) {

src/lxc/cgroups/cgfsng.c

@@ -321,8 +321,8 @@ static char *lxc_cpumask_to_cpulist(uint32_t *bitarr, size_t nbits)
 		if (!is_set(i, bitarr))
 			continue;
 
-		ret = snprintf(numstr, sizeof(numstr), "%zu", i);
-		if (ret < 0 || (size_t)ret >= sizeof(numstr)) {
+		ret = snprintf(numstr, INTTYPE_TO_STRLEN(size_t), "%zu", i);
+		if (ret < 0 || (size_t)ret >= INTTYPE_TO_STRLEN(size_t)) {
 			lxc_free_array((void **)cpulist, free);
 			return NULL;
 		}

src/lxc/log.c

@@ -247,8 +247,8 @@ static int lxc_unix_epoch_to_utc(char *buf, size_t bufsize, const struct timespe
 	seconds = (time->tv_sec - d_in_s - h_in_s - (minutes * 60));
 
 	/* Make string from nanoseconds. */
-	ret = snprintf(nanosec, sizeof(nanosec), "%"PRId64, (int64_t)time->tv_nsec);
-	if (ret < 0 || ret >= sizeof(nanosec))
+	ret = snprintf(nanosec, INTTYPE_TO_STRLEN(int64_t), "%"PRId64, (int64_t)time->tv_nsec);
+	if (ret < 0 || ret >= INTTYPE_TO_STRLEN(int64_t))
 		return -1;
 
 	/* Create final timestamp for the log and shorten nanoseconds to 3

src/lxc/lxccontainer.c

@@ -1018,8 +1018,8 @@ static bool do_lxcapi_start(struct lxc_container *c, int useinit, char * const a
 		int ret, w;
 		char pidstr[INTTYPE_TO_STRLEN(int)];
 
-		w = snprintf(pidstr, sizeof(pidstr), "%d", (int)lxc_raw_getpid());
-		if (w < 0 || (size_t)w >= sizeof(pidstr)) {
+		w = snprintf(pidstr, INTTYPE_TO_STRLEN(int), "%d", (int)lxc_raw_getpid());
+		if (w < 0 || (size_t)w >= INTTYPE_TO_STRLEN(int)) {
 			free_init_cmd(init_cmd);
 			lxc_free_handler(handler);
 

src/lxc/monitor.c

@@ -371,8 +371,8 @@ int lxc_monitord_spawn(const char *lxcpath)
 
 	close(pipefd[0]);
 
-	ret = snprintf(pipefd_str, sizeof(pipefd_str), "%d", pipefd[1]);
-	if (ret < 0 || ret >= sizeof(pipefd_str)) {
+	ret = snprintf(pipefd_str, INTTYPE_TO_STRLEN(int), "%d", pipefd[1]);
+	if (ret < 0 || ret >= INTTYPE_TO_STRLEN(int)) {
 		ERROR("Failed to create pid argument to pass to monitord.");
 		_exit(EXIT_FAILURE);
 	}

src/lxc/tools/lxc_monitor.c

@@ -224,8 +224,8 @@ static int lxc_tool_monitord_spawn(const char *lxcpath)
 
 	close(pipefd[0]);
 
-	ret = snprintf(pipefd_str, sizeof(pipefd_str), "%d", pipefd[1]);
-	if (ret < 0 || ret >= sizeof(pipefd_str)) {
+	ret = snprintf(pipefd_str, INTTYPE_TO_STRLEN(int), "%d", pipefd[1]);
+	if (ret < 0 || ret >= INTTYPE_TO_STRLEN(int)) {
 		ERROR("Failed to create pid argument to pass to monitord");
 		_exit(EXIT_FAILURE);
 	}

src/lxc/utils.c

@@ -1158,7 +1158,7 @@ int lxc_mount_proc_if_needed(const char *rootfs)
 		return -1;
 	}
 
-	linklen = readlink(path, link, sizeof(link));
+	linklen = readlink(path, link, INTTYPE_TO_STRLEN(pid_t));
 
 	ret = snprintf(path, MAXPATHLEN, "%s/proc", rootfs);
 	if (ret < 0 || ret >= MAXPATHLEN) {
@@ -1172,7 +1172,7 @@ int lxc_mount_proc_if_needed(const char *rootfs)
 			return -1;
 
 		goto domount;
-	} else if (linklen >= sizeof(link)) {
+	} else if (linklen >= INTTYPE_TO_STRLEN(pid_t)) {
 		link[linklen - 1] = '\0';
 		ERROR("readlink returned truncated content: \"%s\"", link);
 		return -1;

src/tests/lxc-test-utils.c

@@ -252,14 +252,14 @@ void test_lxc_safe_uint(void)
 	lxc_test_assert_abort((-EINVAL == lxc_safe_uint("    -123", &n)));
 	lxc_test_assert_abort((-EINVAL == lxc_safe_uint("-123", &n)));
 
-	ret = snprintf(numstr, sizeof(numstr), "%" PRIu64, (uint64_t)UINT_MAX);
-	if (ret < 0 || ret >= sizeof(numstr))
+	ret = snprintf(numstr, INTTYPE_TO_STRLEN(uint64_t), "%" PRIu64, (uint64_t)UINT_MAX);
+	if (ret < 0 || ret >= INTTYPE_TO_STRLEN(uint64_t))
 		exit(EXIT_FAILURE);
 
 	lxc_test_assert_abort((0 == lxc_safe_uint(numstr, &n)) && n == UINT_MAX);
 
-	ret = snprintf(numstr, sizeof(numstr), "%" PRIu64, (uint64_t)UINT_MAX + 1);
-	if (ret < 0 || ret >= sizeof(numstr))
+	ret = snprintf(numstr, INTTYPE_TO_STRLEN(uint64_t), "%" PRIu64, (uint64_t)UINT_MAX + 1);
+	if (ret < 0 || ret >= INTTYPE_TO_STRLEN(uint64_t))
 		exit(EXIT_FAILURE);
 
 	lxc_test_assert_abort((-ERANGE == lxc_safe_uint(numstr, &n)));
@@ -285,26 +285,26 @@ void test_lxc_safe_int(void)
 	signed int n;
 	char numstr[INTTYPE_TO_STRLEN(uint64_t)];
 
-	ret = snprintf(numstr, sizeof(numstr), "%" PRIu64, (uint64_t)INT_MAX);
-	if (ret < 0 || ret >= sizeof(numstr))
+	ret = snprintf(numstr, INTTYPE_TO_STRLEN(uint64_t), "%" PRIu64, (uint64_t)INT_MAX);
+	if (ret < 0 || ret >= INTTYPE_TO_STRLEN(uint64_t))
 		exit(EXIT_FAILURE);
 
 	lxc_test_assert_abort((0 == lxc_safe_int(numstr, &n)) && n == INT_MAX);
 
-	ret = snprintf(numstr, sizeof(numstr), "%" PRIu64, (uint64_t)INT_MAX + 1);
-	if (ret < 0 || ret >= sizeof(numstr))
+	ret = snprintf(numstr, INTTYPE_TO_STRLEN(uint64_t), "%" PRIu64, (uint64_t)INT_MAX + 1);
+	if (ret < 0 || ret >= INTTYPE_TO_STRLEN(uint64_t))
 		exit(EXIT_FAILURE);
 
 	lxc_test_assert_abort((-ERANGE == lxc_safe_int(numstr, &n)));
 
-	ret = snprintf(numstr, sizeof(numstr), "%" PRId64, (int64_t)INT_MIN);
-	if (ret < 0 || ret >= sizeof(numstr))
+	ret = snprintf(numstr, INTTYPE_TO_STRLEN(int64_t), "%" PRId64, (int64_t)INT_MIN);
+	if (ret < 0 || ret >= INTTYPE_TO_STRLEN(int64_t))
 		exit(EXIT_FAILURE);
 
 	lxc_test_assert_abort((0 == lxc_safe_int(numstr, &n)) && n == INT_MIN);
 
-	ret = snprintf(numstr, sizeof(numstr), "%" PRId64, (int64_t)INT_MIN - 1);
-	if (ret < 0 || ret >= sizeof(numstr))
+	ret = snprintf(numstr, INTTYPE_TO_STRLEN(int64_t), "%" PRId64, (int64_t)INT_MIN - 1);
+	if (ret < 0 || ret >= INTTYPE_TO_STRLEN(int64_t))
 		exit(EXIT_FAILURE);
 
 	lxc_test_assert_abort((-ERANGE == lxc_safe_int(numstr, &n)));