[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/busybox/src/init/bootchartd.c b/ap/app/busybox/src/init/bootchartd.c
new file mode 100644
index 0000000..9fd6233
--- /dev/null
+++ b/ap/app/busybox/src/init/bootchartd.c
@@ -0,0 +1,462 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+
+//applet:IF_BOOTCHARTD(APPLET(bootchartd, BB_DIR_SBIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_BOOTCHARTD) += bootchartd.o
+
+//config:config BOOTCHARTD
+//config: bool "bootchartd"
+//config: default y
+//config: help
+//config: bootchartd is commonly used to profile the boot process
+//config: for the purpose of speeding it up. In this case, it is started
+//config: by the kernel as the init process. This is configured by adding
+//config: the init=/sbin/bootchartd option to the kernel command line.
+//config:
+//config: It can also be used to monitor the resource usage of a specific
+//config: application or the running system in general. In this case,
+//config: bootchartd is started interactively by running bootchartd start
+//config: and stopped using bootchartd stop.
+//config:
+//config:config FEATURE_BOOTCHARTD_BLOATED_HEADER
+//config: bool "Compatible, bloated header"
+//config: default y
+//config: depends on BOOTCHARTD
+//config: help
+//config: Create extended header file compatible with "big" bootchartd.
+//config: "Big" bootchartd is a shell script and it dumps some
+//config: "convenient" info int the header, such as:
+//config: title = Boot chart for `hostname` (`date`)
+//config: system.uname = `uname -srvm`
+//config: system.release = `cat /etc/DISTRO-release`
+//config: system.cpu = `grep '^model name' /proc/cpuinfo | head -1` ($cpucount)
+//config: system.kernel.options = `cat /proc/cmdline`
+//config: This data is not mandatory for bootchart graph generation,
+//config: and is considered bloat. Nevertheless, this option
+//config: makes bootchartd applet to dump a subset of it.
+//config:
+//config:config FEATURE_BOOTCHARTD_CONFIG_FILE
+//config: bool "Support bootchartd.conf"
+//config: default y
+//config: depends on BOOTCHARTD
+//config: help
+//config: Enable reading and parsing of $PWD/bootchartd.conf
+//config: and /etc/bootchartd.conf files.
+
+#include "libbb.h"
+/* After libbb.h, since it needs sys/types.h on some systems */
+#include <sys/utsname.h>
+
+#ifdef __linux__
+# include <sys/mount.h>
+# ifndef MS_SILENT
+# define MS_SILENT (1 << 15)
+# endif
+# ifndef MNT_DETACH
+# define MNT_DETACH 0x00000002
+# endif
+#endif
+
+#define BC_VERSION_STR "0.8"
+
+/* For debugging, set to 0:
+ * strace won't work with DO_SIGNAL_SYNC set to 1.
+ */
+#define DO_SIGNAL_SYNC 1
+
+
+//$PWD/bootchartd.conf and /etc/bootchartd.conf:
+//supported options:
+//# Sampling period (in seconds)
+//SAMPLE_PERIOD=0.2
+//
+//not yet supported:
+//# tmpfs size
+//# (32 MB should suffice for ~20 minutes worth of log data, but YMMV)
+//TMPFS_SIZE=32m
+//
+//# Whether to enable and store BSD process accounting information. The
+//# kernel needs to be configured to enable v3 accounting
+//# (CONFIG_BSD_PROCESS_ACCT_V3). accton from the GNU accounting utilities
+//# is also required.
+//PROCESS_ACCOUNTING="no"
+//
+//# Tarball for the various boot log files
+//BOOTLOG_DEST=/var/log/bootchart.tgz
+//
+//# Whether to automatically stop logging as the boot process completes.
+//# The logger will look for known processes that indicate bootup completion
+//# at a specific runlevel (e.g. gdm-binary, mingetty, etc.).
+//AUTO_STOP_LOGGER="yes"
+//
+//# Whether to automatically generate the boot chart once the boot logger
+//# completes. The boot chart will be generated in $AUTO_RENDER_DIR.
+//# Note that the bootchart package must be installed.
+//AUTO_RENDER="no"
+//
+//# Image format to use for the auto-generated boot chart
+//# (choose between png, svg and eps).
+//AUTO_RENDER_FORMAT="png"
+//
+//# Output directory for auto-generated boot charts
+//AUTO_RENDER_DIR="/var/log"
+
+
+/* Globals */
+struct globals {
+ char jiffy_line[COMMON_BUFSIZE];
+} FIX_ALIASING;
+#define G (*(struct globals*)&bb_common_bufsiz1)
+#define INIT_G() do { } while (0)
+
+static void dump_file(FILE *fp, const char *filename)
+{
+ int fd = open(filename, O_RDONLY);
+ if (fd >= 0) {
+ fputs(G.jiffy_line, fp);
+ fflush(fp);
+ bb_copyfd_eof(fd, fileno(fp));
+ close(fd);
+ fputc('\n', fp);
+ }
+}
+
+static int dump_procs(FILE *fp, int look_for_login_process)
+{
+ struct dirent *entry;
+ DIR *dir = opendir("/proc");
+ int found_login_process = 0;
+
+ fputs(G.jiffy_line, fp);
+ while ((entry = readdir(dir)) != NULL) {
+ char name[sizeof("/proc/%u/cmdline") + sizeof(int)*3];
+ int stat_fd;
+ unsigned pid = bb_strtou(entry->d_name, NULL, 10);
+ if (errno)
+ continue;
+
+ /* Android's version reads /proc/PID/cmdline and extracts
+ * non-truncated process name. Do we want to do that? */
+
+ sprintf(name, "/proc/%u/stat", pid);
+ stat_fd = open(name, O_RDONLY);
+ if (stat_fd >= 0) {
+ char *p;
+ char stat_line[4*1024];
+ int rd = safe_read(stat_fd, stat_line, sizeof(stat_line)-2);
+
+ close(stat_fd);
+ if (rd < 0)
+ continue;
+ stat_line[rd] = '\0';
+ p = strchrnul(stat_line, '\n');
+ *p++ = '\n';
+ *p = '\0';
+ fputs(stat_line, fp);
+ if (!look_for_login_process)
+ continue;
+ p = strchr(stat_line, '(');
+ if (!p)
+ continue;
+ p++;
+ strchrnul(p, ')')[0] = '\0';
+ /* Is it gdm, kdm or a getty? */
+ if (((p[0] == 'g' || p[0] == 'k' || p[0] == 'x') && p[1] == 'd' && p[2] == 'm')
+ || strstr(p, "getty")
+ ) {
+ found_login_process = 1;
+ }
+ }
+ }
+ closedir(dir);
+ fputc('\n', fp);
+ return found_login_process;
+}
+
+static char *make_tempdir(void)
+{
+ char template[] = "/tmp/bootchart.XXXXXX";
+ char *tempdir = xstrdup(mkdtemp(template));
+ if (!tempdir) {
+#ifdef __linux__
+ /* /tmp is not writable (happens when we are used as init).
+ * Try to mount a tmpfs, them cd and lazily unmount it.
+ * Since we unmount it at once, we can mount it anywhere.
+ * Try a few locations which are likely ti exist.
+ */
+ static const char dirs[] = "/mnt\0""/tmp\0""/boot\0""/proc\0";
+ const char *try_dir = dirs;
+ while (mount("none", try_dir, "tmpfs", MS_SILENT, "size=16m") != 0) {
+ try_dir += strlen(try_dir) + 1;
+ if (!try_dir[0])
+ bb_perror_msg_and_die("can't %smount tmpfs", "");
+ }
+ //bb_error_msg("mounted tmpfs on %s", try_dir);
+ xchdir(try_dir);
+ if (umount2(try_dir, MNT_DETACH) != 0) {
+ bb_perror_msg_and_die("can't %smount tmpfs", "un");
+ }
+#else
+ bb_perror_msg_and_die("can't create temporary directory");
+#endif
+ } else {
+ xchdir(tempdir);
+ }
+ return tempdir;
+}
+
+static void do_logging(unsigned sample_period_us, int process_accounting)
+{
+ FILE *proc_stat = xfopen("proc_stat.log", "w");
+ FILE *proc_diskstats = xfopen("proc_diskstats.log", "w");
+ //FILE *proc_netdev = xfopen("proc_netdev.log", "w");
+ FILE *proc_ps = xfopen("proc_ps.log", "w");
+ int look_for_login_process = (getppid() == 1);
+ unsigned count = 60*1000*1000 / sample_period_us; /* ~1 minute */
+
+ if (process_accounting) {
+ close(xopen("kernel_pacct", O_WRONLY | O_CREAT | O_TRUNC));
+ acct("kernel_pacct");
+ }
+
+ while (--count && !bb_got_signal) {
+ char *p;
+ int len = open_read_close("/proc/uptime", G.jiffy_line, sizeof(G.jiffy_line)-2);
+ if (len < 0)
+ goto wait_more;
+ /* /proc/uptime has format "NNNNNN.MM NNNNNNN.MM" */
+ /* we convert it to "NNNNNNMM\n" (using first value) */
+ G.jiffy_line[len] = '\0';
+ p = strchr(G.jiffy_line, '.');
+ if (!p)
+ goto wait_more;
+ while (isdigit(*++p))
+ p[-1] = *p;
+ p[-1] = '\n';
+ p[0] = '\0';
+
+ dump_file(proc_stat, "/proc/stat");
+ dump_file(proc_diskstats, "/proc/diskstats");
+ //dump_file(proc_netdev, "/proc/net/dev");
+ if (dump_procs(proc_ps, look_for_login_process)) {
+ /* dump_procs saw a getty or {g,k,x}dm
+ * stop logging in 2 seconds:
+ */
+ if (count > 2*1000*1000 / sample_period_us)
+ count = 2*1000*1000 / sample_period_us;
+ }
+ fflush_all();
+ wait_more:
+ usleep(sample_period_us);
+ }
+}
+
+static void finalize(char *tempdir, const char *prog, int process_accounting)
+{
+ //# Stop process accounting if configured
+ //local pacct=
+ //[ -e kernel_pacct ] && pacct=kernel_pacct
+
+ FILE *header_fp = xfopen("header", "w");
+
+ if (process_accounting)
+ acct(NULL);
+
+ if (prog)
+ fprintf(header_fp, "profile.process = %s\n", prog);
+
+ fputs("version = "BC_VERSION_STR"\n", header_fp);
+ if (ENABLE_FEATURE_BOOTCHARTD_BLOATED_HEADER) {
+ char *hostname;
+ char *kcmdline;
+ time_t t;
+ struct tm tm_time;
+ /* x2 for possible localized weekday/month names */
+ char date_buf[sizeof("Mon Jun 21 05:29:03 CEST 2010") * 2];
+ struct utsname unamebuf;
+
+ hostname = safe_gethostname();
+ time(&t);
+ localtime_r(&t, &tm_time);
+ strftime(date_buf, sizeof(date_buf), "%a %b %e %H:%M:%S %Z %Y", &tm_time);
+ fprintf(header_fp, "title = Boot chart for %s (%s)\n", hostname, date_buf);
+ if (ENABLE_FEATURE_CLEAN_UP)
+ free(hostname);
+
+ uname(&unamebuf); /* never fails */
+ /* same as uname -srvm */
+ fprintf(header_fp, "system.uname = %s %s %s %s\n",
+ unamebuf.sysname,
+ unamebuf.release,
+ unamebuf.version,
+ unamebuf.machine
+ );
+
+ //system.release = `cat /etc/DISTRO-release`
+ //system.cpu = `grep '^model name' /proc/cpuinfo | head -1` ($cpucount)
+
+ kcmdline = xmalloc_open_read_close("/proc/cmdline", NULL);
+ /* kcmdline includes trailing "\n" */
+ fprintf(header_fp, "system.kernel.options = %s", kcmdline);
+ if (ENABLE_FEATURE_CLEAN_UP)
+ free(kcmdline);
+ }
+ fclose(header_fp);
+
+ /* Package log files */
+ system(xasprintf("tar -zcf /var/log/bootlog.tgz header %s *.log", process_accounting ? "kernel_pacct" : ""));
+ /* Clean up (if we are not in detached tmpfs) */
+ if (tempdir) {
+ unlink("header");
+ unlink("proc_stat.log");
+ unlink("proc_diskstats.log");
+ //unlink("proc_netdev.log");
+ unlink("proc_ps.log");
+ if (process_accounting)
+ unlink("kernel_pacct");
+ rmdir(tempdir);
+ }
+
+ /* shell-based bootchartd tries to run /usr/bin/bootchart if $AUTO_RENDER=yes:
+ * /usr/bin/bootchart -o "$AUTO_RENDER_DIR" -f $AUTO_RENDER_FORMAT "$BOOTLOG_DEST"
+ */
+}
+
+//usage:#define bootchartd_trivial_usage
+//usage: "start [PROG ARGS]|stop|init"
+//usage:#define bootchartd_full_usage "\n\n"
+//usage: "Create /var/log/bootchart.tgz with boot chart data\n"
+//usage: "\nstart: start background logging; with PROG, run PROG, then kill logging with USR1"
+//usage: "\nstop: send USR1 to all bootchartd processes"
+//usage: "\ninit: start background logging; stop when getty/xdm is seen (for init scripts)"
+//usage: "\nUnder PID 1: as init, then exec $bootchart_init, /init, /sbin/init"
+
+int bootchartd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int bootchartd_main(int argc UNUSED_PARAM, char **argv)
+{
+ unsigned sample_period_us;
+ pid_t parent_pid, logger_pid;
+ smallint cmd;
+ int process_accounting;
+ enum {
+ CMD_STOP = 0,
+ CMD_START,
+ CMD_INIT,
+ CMD_PID1, /* used to mark pid 1 case */
+ };
+
+ INIT_G();
+
+ parent_pid = getpid();
+ if (argv[1]) {
+ cmd = index_in_strings("stop\0""start\0""init\0", argv[1]);
+ if (cmd < 0)
+ bb_show_usage();
+ if (cmd == CMD_STOP) {
+ pid_t *pidList = find_pid_by_name("bootchartd");
+ while (*pidList != 0) {
+ if (*pidList != parent_pid)
+ kill(*pidList, SIGUSR1);
+ pidList++;
+ }
+ return EXIT_SUCCESS;
+ }
+ } else {
+ if (parent_pid != 1)
+ bb_show_usage();
+ cmd = CMD_PID1;
+ }
+
+ /* Here we are in START, INIT or CMD_PID1 state */
+
+ /* Read config file: */
+ sample_period_us = 200 * 1000;
+ process_accounting = 0;
+ if (ENABLE_FEATURE_BOOTCHARTD_CONFIG_FILE) {
+ char* token[2];
+ parser_t *parser = config_open2("/etc/bootchartd.conf" + 5, fopen_for_read);
+ if (!parser)
+ parser = config_open2("/etc/bootchartd.conf", fopen_for_read);
+ while (config_read(parser, token, 2, 0, "#=", PARSE_NORMAL & ~PARSE_COLLAPSE)) {
+ if (strcmp(token[0], "SAMPLE_PERIOD") == 0 && token[1])
+ sample_period_us = atof(token[1]) * 1000000;
+ if (strcmp(token[0], "PROCESS_ACCOUNTING") == 0 && token[1]
+ && (strcmp(token[1], "on") == 0 || strcmp(token[1], "yes") == 0)
+ ) {
+ process_accounting = 1;
+ }
+ }
+ config_close(parser);
+ if ((int)sample_period_us <= 0)
+ sample_period_us = 1; /* prevent division by 0 */
+ }
+
+ /* Create logger child: */
+ logger_pid = fork_or_rexec(argv);
+
+ if (logger_pid == 0) { /* child */
+ char *tempdir;
+
+ bb_signals(0
+ + (1 << SIGUSR1)
+ + (1 << SIGUSR2)
+ + (1 << SIGTERM)
+ + (1 << SIGQUIT)
+ + (1 << SIGINT)
+ + (1 << SIGHUP)
+ , record_signo);
+
+ if (DO_SIGNAL_SYNC)
+ /* Inform parent that we are ready */
+ raise(SIGSTOP);
+
+ /* If we are started by kernel, PATH might be unset.
+ * In order to find "tar", let's set some sane PATH:
+ */
+ if (cmd == CMD_PID1 && !getenv("PATH"))
+ putenv((char*)bb_PATH_root_path);
+
+ tempdir = make_tempdir();
+ do_logging(sample_period_us, process_accounting);
+ finalize(tempdir, cmd == CMD_START ? argv[2] : NULL, process_accounting);
+ return EXIT_SUCCESS;
+ }
+
+ /* parent */
+
+ USE_FOR_NOMMU(argv[0][0] &= 0x7f); /* undo fork_or_rexec() damage */
+
+ if (DO_SIGNAL_SYNC) {
+ /* Wait for logger child to set handlers, then unpause it.
+ * Otherwise with short-lived PROG (e.g. "bootchartd start true")
+ * we might send SIGUSR1 before logger sets its handler.
+ */
+ waitpid(logger_pid, NULL, WUNTRACED);
+ kill(logger_pid, SIGCONT);
+ }
+
+ if (cmd == CMD_PID1) {
+ char *bootchart_init = getenv("bootchart_init");
+ if (bootchart_init)
+ execl(bootchart_init, bootchart_init, NULL);
+ execl("/init", "init", NULL);
+ execl("/sbin/init", "init", NULL);
+ bb_perror_msg_and_die("can't execute '%s'", "/sbin/init");
+ }
+
+ if (cmd == CMD_START && argv[2]) { /* "start PROG ARGS" */
+ pid_t pid = xvfork();
+ if (pid == 0) { /* child */
+ argv += 2;
+ BB_EXECVP_or_die(argv);
+ }
+ /* parent */
+ waitpid(pid, NULL, 0);
+ kill(logger_pid, SIGUSR1);
+ }
+
+ return EXIT_SUCCESS;
+}