am 91b76d7d: Merge "Made suffix length of rotated logcat files constant." (ffb60ce6) · Commits · e / os / android_system_core

logcat/logcat.cpp

+8 −2

Original line number	Diff line number	Diff line
		@@ -4,6 +4,7 @@
		#include <ctype.h>
		#include <errno.h>
		#include <fcntl.h>
		#include <math.h>
		#include <stdio.h>
		#include <stdlib.h>
		#include <stdarg.h>
		@@ -80,15 +81,20 @@ static void rotateLogs()

		close(g_outFD);

		// Compute the maximum number of digits needed to count up to g_maxRotatedLogs in decimal.
		// eg: g_maxRotatedLogs == 30 -> log10(30) == 1.477 -> maxRotationCountDigits == 2
		int maxRotationCountDigits =
		(g_maxRotatedLogs > 0) ? (int) (floor(log10(g_maxRotatedLogs) + 1)) : 0;

		for (int i = g_maxRotatedLogs ; i > 0 ; i--) {
		char file0, file1;

		asprintf(&file1, "%s.%d", g_outputFileName, i);
		asprintf(&file1, "%s.%.*d", g_outputFileName, maxRotationCountDigits, i);

		if (i - 1 == 0) {
		asprintf(&file0, "%s", g_outputFileName);
		} else {
		asprintf(&file0, "%s.%d", g_outputFileName, i - 1);
		asprintf(&file0, "%s.%.*d", g_outputFileName, maxRotationCountDigits, i - 1);
		}

		err = rename (file0, file1);

logcat/tests/logcat_test.cpp

+54 −0

Original line number	Diff line number	Diff line
		@@ -524,6 +524,60 @@ TEST(logcat, logrotate) {
		EXPECT_FALSE(system(command));
		}

		TEST(logcat, logrotate_suffix) {
		static const char tmp_out_dir_form[] = "/data/local/tmp/logcat.logrotate.XXXXXX";
		char tmp_out_dir[sizeof(tmp_out_dir_form)];
		ASSERT_TRUE(NULL != mkdtemp(strcpy(tmp_out_dir, tmp_out_dir_form)));

		static const char logcat_cmd[] = "logcat -b radio -b events -b system -b main"
		" -d -f %s/log.txt -n 10 -r 1";
		char command[sizeof(tmp_out_dir) + sizeof(logcat_cmd)];
		sprintf(command, logcat_cmd, tmp_out_dir);

		int ret;
		EXPECT_FALSE((ret = system(command)));
		if (!ret) {
		sprintf(command, "ls %s 2>/dev/null", tmp_out_dir);

		FILE *fp;
		EXPECT_TRUE(NULL != (fp = popen(command, "r")));
		char buffer[5120];
		int log_file_count = 0;

		while (fgets(buffer, sizeof(buffer), fp)) {
		static const char rotated_log_filename_prefix[] = "log.txt.";
		static const size_t rotated_log_filename_prefix_len =
		strlen(rotated_log_filename_prefix);
		static const char total[] = "total ";
		static const char log_filename[] = "log.txt";

		if (!strncmp(buffer, rotated_log_filename_prefix, rotated_log_filename_prefix_len)) {
		// Rotated file should have form log.txt.##
		char* rotated_log_filename_suffix = buffer + rotated_log_filename_prefix_len;
		char* endptr;
		const long int suffix_value = strtol(rotated_log_filename_suffix, &endptr, 10);
		EXPECT_EQ(rotated_log_filename_suffix + 2, endptr);
		EXPECT_LE(suffix_value, 10);
		EXPECT_GT(suffix_value, 0);
		++log_file_count;
		continue;
		}

		if (!strncmp(buffer, log_filename, strlen(log_filename))) {
		++log_file_count;
		continue;
		}

		fprintf(stderr, "ERROR: Unexpected file: %s", buffer);
		ADD_FAILURE();
		}
		pclose(fp);
		EXPECT_EQ(11, log_file_count);
		}
		sprintf(command, "rm -rf %s", tmp_out_dir);
		EXPECT_FALSE(system(command));
		}

		static void caught_blocking_clear(int /signum/)
		{
		unsigned long long v = 0xDEADBEEFA55C0000ULL;