Merge "Improve adb sync_send error reporting."
diff --git a/libbacktrace/BacktraceCurrent.cpp b/libbacktrace/BacktraceCurrent.cpp
index 2714d93..d339550 100644
--- a/libbacktrace/BacktraceCurrent.cpp
+++ b/libbacktrace/BacktraceCurrent.cpp
@@ -93,6 +93,10 @@
 
 static pthread_mutex_t g_sigaction_mutex = PTHREAD_MUTEX_INITIALIZER;
 
+static void SignalLogOnly(int, siginfo_t*, void*) {
+  BACK_LOGE("pid %d, tid %d: Received a spurious signal %d\n", getpid(), gettid(), THREAD_SIGNAL);
+}
+
 static void SignalHandler(int, siginfo_t*, void* sigcontext) {
   ThreadEntry* entry = ThreadEntry::Get(getpid(), gettid(), false);
   if (!entry) {
@@ -151,9 +155,21 @@
   // that we are waiting for the first Wake() call made by the thread.
   bool wait_completed = entry->Wait(1);
 
+  if (!wait_completed && oldact.sa_sigaction == nullptr) {
+    // If the wait failed, it could be that the signal could not be delivered
+    // within the timeout. Add a signal handler that's simply going to log
+    // something so that we don't crash if the signal eventually gets
+    // delivered. Only do this if there isn't already an action set up.
+    memset(&act, 0, sizeof(act));
+    act.sa_sigaction = SignalLogOnly;
+    act.sa_flags = SA_RESTART | SA_SIGINFO | SA_ONSTACK;
+    sigemptyset(&act.sa_mask);
+    sigaction(THREAD_SIGNAL, &act, nullptr);
+  } else {
+    sigaction(THREAD_SIGNAL, &oldact, nullptr);
+  }
   // After the thread has received the signal, allow other unwinders to
   // continue.
-  sigaction(THREAD_SIGNAL, &oldact, nullptr);
   pthread_mutex_unlock(&g_sigaction_mutex);
 
   bool unwind_done = false;
diff --git a/metricsd/Android.mk b/metricsd/Android.mk
index d619b32..12dfa18 100644
--- a/metricsd/Android.mk
+++ b/metricsd/Android.mk
@@ -133,9 +133,7 @@
   libchromeos-http \
   libchromeos-dbus \
   libcutils \
-  libdbus \
-  librootdev
-
+  libdbus
 LOCAL_SRC_FILES := $(metrics_daemon_sources)
 LOCAL_STATIC_LIBRARIES := metrics_daemon_protos
 include $(BUILD_EXECUTABLE)
diff --git a/metricsd/metrics_daemon.cc b/metricsd/metrics_daemon.cc
index c188aa4..2838119 100644
--- a/metricsd/metrics_daemon.cc
+++ b/metricsd/metrics_daemon.cc
@@ -110,7 +110,6 @@
 const char kVmStatFileName[] = "/proc/vmstat";
 const char kMeminfoFileName[] = "/proc/meminfo";
 const int kMetricsProcStatFirstLineItemsCount = 11;
-const int kDiskMetricsStatItemCount = 11;
 
 // Thermal CPU throttling.
 
@@ -216,7 +215,6 @@
                          bool uploader_active,
                          bool dbus_enabled,
                          MetricsLibraryInterface* metrics_lib,
-                         const string& diskstats_path,
                          const string& scaling_max_freq_path,
                          const string& cpuinfo_max_freq_path,
                          const base::TimeDelta& upload_interval,
@@ -275,13 +273,8 @@
   weekly_cycle_.reset(new PersistentInteger("weekly.cycle"));
   version_cycle_.reset(new PersistentInteger("version.cycle"));
 
-  diskstats_path_ = diskstats_path;
   scaling_max_freq_path_ = scaling_max_freq_path;
   cpuinfo_max_freq_path_ = cpuinfo_max_freq_path;
-
-  // If testing, initialize Stats Reporter without connecting DBus
-  if (testing_)
-    StatsReporterInit();
 }
 
 int MetricsDaemon::OnInit() {
@@ -290,13 +283,6 @@
   if (return_code != EX_OK)
     return return_code;
 
-  StatsReporterInit();
-
-  // Start collecting meminfo stats.
-  ScheduleMeminfoCallback(kMetricMeminfoInterval);
-  memuse_final_time_ = GetActiveTime() + kMemuseIntervals[0];
-  ScheduleMemuseCallback(kMemuseIntervals[0]);
-
   if (testing_)
     return EX_OK;
 
@@ -327,11 +313,6 @@
     }
   }
 
-  base::MessageLoop::current()->PostDelayedTask(FROM_HERE,
-      base::Bind(&MetricsDaemon::HandleUpdateStatsTimeout,
-                 base::Unretained(this)),
-      base::TimeDelta::FromMilliseconds(kUpdateStatsIntervalMs));
-
   if (uploader_active_) {
     upload_service_.reset(
         new UploadService(new SystemProfileCache(), metrics_lib_, server_));
@@ -513,40 +494,6 @@
       base::TimeDelta::FromSeconds(wait));
 }
 
-bool MetricsDaemon::DiskStatsReadStats(uint64_t* read_sectors,
-                                       uint64_t* write_sectors) {
-  CHECK(read_sectors);
-  CHECK(write_sectors);
-  std::string line;
-  if (diskstats_path_.empty()) {
-    return false;
-  }
-
-  if (!base::ReadFileToString(base::FilePath(diskstats_path_), &line)) {
-    PLOG(WARNING) << "Could not read disk stats from " << diskstats_path_;
-    return false;
-  }
-
-  std::vector<std::string> parts = base::SplitString(
-      line, " ", base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
-  if (parts.size() != kDiskMetricsStatItemCount) {
-    LOG(ERROR) << "Could not parse disk stat correctly. Expected "
-               << kDiskMetricsStatItemCount << " elements but got "
-               << parts.size();
-    return false;
-  }
-  if (!base::StringToUint64(parts[2], read_sectors)) {
-    LOG(ERROR) << "Couldn't convert read sectors " << parts[2] << " to uint64";
-    return false;
-  }
-  if (!base::StringToUint64(parts[6], write_sectors)) {
-    LOG(ERROR) << "Couldn't convert write sectors " << parts[6] << " to uint64";
-    return false;
-  }
-
-  return true;
-}
-
 bool MetricsDaemon::VmStatsParseStats(const char* stats,
                                       struct VmstatRecord* record) {
   CHECK(stats);
@@ -766,7 +713,10 @@
   }
   // Make both calls even if the first one fails.
   bool success = ProcessMeminfo(meminfo_raw);
-  if (ProcessMeminfo(meminfo_raw)) {
+  bool reschedule =
+      ReportZram(base::FilePath(FILE_PATH_LITERAL("/sys/block/zram0"))) &&
+      success;
+  if (reschedule) {
     base::MessageLoop::current()->PostDelayedTask(FROM_HERE,
         base::Bind(&MetricsDaemon::MeminfoCallback, base::Unretained(this),
                    wait),
diff --git a/metricsd/metrics_daemon.h b/metricsd/metrics_daemon.h
index 7f7ea63..9180e23 100644
--- a/metricsd/metrics_daemon.h
+++ b/metricsd/metrics_daemon.h
@@ -45,7 +45,6 @@
             bool uploader_active,
             bool dbus_enabled,
             MetricsLibraryInterface* metrics_lib,
-            const std::string& diskstats_path,
             const std::string& cpuinfo_max_freq_path,
             const std::string& scaling_max_freq_path,
             const base::TimeDelta& upload_interval,
@@ -79,7 +78,6 @@
   FRIEND_TEST(MetricsDaemonTest, GetHistogramPath);
   FRIEND_TEST(MetricsDaemonTest, IsNewEpoch);
   FRIEND_TEST(MetricsDaemonTest, MessageFilter);
-  FRIEND_TEST(MetricsDaemonTest, ParseDiskStats);
   FRIEND_TEST(MetricsDaemonTest, ParseVmStats);
   FRIEND_TEST(MetricsDaemonTest, ProcessKernelCrash);
   FRIEND_TEST(MetricsDaemonTest, ProcessMeminfo);
@@ -88,6 +86,7 @@
   FRIEND_TEST(MetricsDaemonTest, ProcessUserCrash);
   FRIEND_TEST(MetricsDaemonTest, ReportCrashesDailyFrequency);
   FRIEND_TEST(MetricsDaemonTest, ReadFreqToInt);
+  FRIEND_TEST(MetricsDaemonTest, ReportDiskStats);
   FRIEND_TEST(MetricsDaemonTest, ReportKernelCrashInterval);
   FRIEND_TEST(MetricsDaemonTest, ReportUncleanShutdownInterval);
   FRIEND_TEST(MetricsDaemonTest, ReportUserCrashInterval);
@@ -325,7 +324,6 @@
   scoped_ptr<PersistentInteger> unclean_shutdowns_daily_count_;
   scoped_ptr<PersistentInteger> unclean_shutdowns_weekly_count_;
 
-  std::string diskstats_path_;
   std::string scaling_max_freq_path_;
   std::string cpuinfo_max_freq_path_;
 
diff --git a/metricsd/metrics_daemon_main.cc b/metricsd/metrics_daemon_main.cc
index 43046f8..7f9ec43 100644
--- a/metricsd/metrics_daemon_main.cc
+++ b/metricsd/metrics_daemon_main.cc
@@ -20,7 +20,6 @@
 #include <base/strings/string_util.h>
 #include <chromeos/flag_helper.h>
 #include <chromeos/syslog_logging.h>
-#include <rootdev.h>
 
 #include "constants.h"
 #include "metrics_daemon.h"
@@ -30,28 +29,6 @@
 const char kCpuinfoMaxFreqPath[] =
     "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq";
 
-// Returns the path to the disk stats in the sysfs.  Returns the null string if
-// it cannot find the disk stats file.
-static
-const std::string MetricsMainDiskStatsPath() {
-  char dev_path_cstr[PATH_MAX];
-  std::string dev_prefix = "/dev/block/";
-  std::string dev_path;
-
-  int ret = rootdev(dev_path_cstr, sizeof(dev_path_cstr), true, true);
-  if (ret != 0) {
-    LOG(WARNING) << "error " << ret << " determining root device";
-    return "";
-  }
-  dev_path = dev_path_cstr;
-  // Check that rootdev begins with "/dev/block/".
-  if (!base::StartsWithASCII(dev_path, dev_prefix, false)) {
-    LOG(WARNING) << "unexpected root device " << dev_path;
-    return "";
-  }
-  return "/sys/class/block/" + dev_path.substr(dev_prefix.length()) + "/stat";
-}
-
 int main(int argc, char** argv) {
   DEFINE_bool(daemon, true, "run as daemon (use -nodaemon for debugging)");
 
@@ -98,7 +75,6 @@
               FLAGS_uploader | FLAGS_uploader_test,
               FLAGS_withdbus,
               &metrics_lib,
-              MetricsMainDiskStatsPath(),
               kScalingMaxFreqPath,
               kCpuinfoMaxFreqPath,
               base::TimeDelta::FromSeconds(FLAGS_upload_interval_secs),
diff --git a/metricsd/metrics_daemon_test.cc b/metricsd/metrics_daemon_test.cc
index 4ef097e..0d2229c 100644
--- a/metricsd/metrics_daemon_test.cc
+++ b/metricsd/metrics_daemon_test.cc
@@ -82,7 +82,6 @@
                  false,
                  true,
                  &metrics_lib_,
-                 disk_stats_path_.value(),
                  scaling_max_freq_path_.value(),
                  cpu_max_freq_path_.value(),
                  base::TimeDelta::FromMinutes(30),
@@ -199,21 +198,6 @@
                      /* min */ 1, /* max */ 100, /* buckets */ 50);
 }
 
-TEST_F(MetricsDaemonTest, ParseDiskStats) {
-  uint64_t read_sectors_now, write_sectors_now;
-  CreateFakeDiskStatsFile(kFakeDiskStats0);
-  ASSERT_TRUE(daemon_.DiskStatsReadStats(&read_sectors_now,
-                                         &write_sectors_now));
-  EXPECT_EQ(read_sectors_now, kFakeReadSectors[0]);
-  EXPECT_EQ(write_sectors_now, kFakeWriteSectors[0]);
-
-  CreateFakeDiskStatsFile(kFakeDiskStats1);
-  ASSERT_TRUE(daemon_.DiskStatsReadStats(&read_sectors_now,
-                                         &write_sectors_now));
-  EXPECT_EQ(read_sectors_now, kFakeReadSectors[1]);
-  EXPECT_EQ(write_sectors_now, kFakeWriteSectors[1]);
-}
-
 TEST_F(MetricsDaemonTest, ProcessMeminfo) {
   string meminfo =
       "MemTotal:        2000000 kB\nMemFree:          500000 kB\n"
diff --git a/toolbox/Android.mk b/toolbox/Android.mk
index 24f702f..1d3605e 100644
--- a/toolbox/Android.mk
+++ b/toolbox/Android.mk
@@ -43,7 +43,6 @@
     iftop \
     ioctl \
     log \
-    ls \
     lsof \
     nandread \
     newfs_msdos \
diff --git a/toolbox/ls.c b/toolbox/ls.c
deleted file mode 100644
index 9a89dd4..0000000
--- a/toolbox/ls.c
+++ /dev/null
@@ -1,588 +0,0 @@
-#include <dirent.h>
-#include <errno.h>
-#include <grp.h>
-#include <limits.h>
-#include <pwd.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/sysmacros.h>
-#include <sys/types.h>
-#include <time.h>
-#include <unistd.h>
-
-#include <selinux/selinux.h>
-
-// simple dynamic array of strings.
-typedef struct {
-    int count;
-    int capacity;
-    void** items;
-} strlist_t;
-
-#define STRLIST_INITIALIZER { 0, 0, NULL }
-
-/* Used to iterate over a strlist_t
- * _list   :: pointer to strlist_t object
- * _item   :: name of local variable name defined within the loop with
- *            type 'char*'
- * _stmnt  :: C statement executed in each iteration
- *
- * This macro is only intended for simple uses. Do not add or remove items
- * to/from the list during iteration.
- */
-#define  STRLIST_FOREACH(_list,_item,_stmnt) \
-    do { \
-        int _nn_##__LINE__ = 0; \
-        for (;_nn_##__LINE__ < (_list)->count; ++ _nn_##__LINE__) { \
-            char* _item = (char*)(_list)->items[_nn_##__LINE__]; \
-            _stmnt; \
-        } \
-    } while (0)
-
-static void dynarray_reserve_more( strlist_t *a, int count ) {
-    int old_cap = a->capacity;
-    int new_cap = old_cap;
-    const int max_cap = INT_MAX/sizeof(void*);
-    void** new_items;
-    int new_count = a->count + count;
-
-    if (count <= 0)
-        return;
-
-    if (count > max_cap - a->count)
-        abort();
-
-    new_count = a->count + count;
-
-    while (new_cap < new_count) {
-        old_cap = new_cap;
-        new_cap += (new_cap >> 2) + 4;
-        if (new_cap < old_cap || new_cap > max_cap) {
-            new_cap = max_cap;
-        }
-    }
-    new_items = realloc(a->items, new_cap*sizeof(void*));
-    if (new_items == NULL)
-        abort();
-
-    a->items = new_items;
-    a->capacity = new_cap;
-}
-
-void strlist_init( strlist_t *list ) {
-    list->count = list->capacity = 0;
-    list->items = NULL;
-}
-
-// append a new string made of the first 'slen' characters from 'str'
-// followed by a trailing zero.
-void strlist_append_b( strlist_t *list, const void* str, size_t  slen ) {
-    char *copy = malloc(slen+1);
-    memcpy(copy, str, slen);
-    copy[slen] = '\0';
-    if (list->count >= list->capacity)
-        dynarray_reserve_more(list, 1);
-    list->items[list->count++] = copy;
-}
-
-// append the copy of a given input string to a strlist_t.
-void strlist_append_dup( strlist_t *list, const char *str) {
-    strlist_append_b(list, str, strlen(str));
-}
-
-// note: strlist_done will free all the strings owned by the list.
-void strlist_done( strlist_t *list ) {
-    STRLIST_FOREACH(list, string, free(string));
-    free(list->items);
-    list->items = NULL;
-    list->count = list->capacity = 0;
-}
-
-static int strlist_compare_strings(const void* a, const void* b) {
-    const char *sa = *(const char **)a;
-    const char *sb = *(const char **)b;
-    return strcmp(sa, sb);
-}
-
-/* sort the strings in a given list (using strcmp) */
-void strlist_sort( strlist_t *list ) {
-    if (list->count > 0) {
-        qsort(list->items, (size_t)list->count, sizeof(void*), strlist_compare_strings);
-    }
-}
-
-
-// bits for flags argument
-#define LIST_LONG           (1 << 0)
-#define LIST_ALL            (1 << 1)
-#define LIST_RECURSIVE      (1 << 2)
-#define LIST_DIRECTORIES    (1 << 3)
-#define LIST_SIZE           (1 << 4)
-#define LIST_LONG_NUMERIC   (1 << 5)
-#define LIST_CLASSIFY       (1 << 6)
-#define LIST_MACLABEL       (1 << 7)
-#define LIST_INODE          (1 << 8)
-
-// fwd
-static int listpath(const char *name, int flags);
-
-static char mode2kind(mode_t mode)
-{
-    switch(mode & S_IFMT){
-    case S_IFSOCK: return 's';
-    case S_IFLNK: return 'l';
-    case S_IFREG: return '-';
-    case S_IFDIR: return 'd';
-    case S_IFBLK: return 'b';
-    case S_IFCHR: return 'c';
-    case S_IFIFO: return 'p';
-    default: return '?';
-    }
-}
-
-void strmode(mode_t mode, char *out)
-{
-    *out++ = mode2kind(mode);
-
-    *out++ = (mode & 0400) ? 'r' : '-';
-    *out++ = (mode & 0200) ? 'w' : '-';
-    if(mode & 04000) {
-        *out++ = (mode & 0100) ? 's' : 'S';
-    } else {
-        *out++ = (mode & 0100) ? 'x' : '-';
-    }
-    *out++ = (mode & 040) ? 'r' : '-';
-    *out++ = (mode & 020) ? 'w' : '-';
-    if(mode & 02000) {
-        *out++ = (mode & 010) ? 's' : 'S';
-    } else {
-        *out++ = (mode & 010) ? 'x' : '-';
-    }
-    *out++ = (mode & 04) ? 'r' : '-';
-    *out++ = (mode & 02) ? 'w' : '-';
-    if(mode & 01000) {
-        *out++ = (mode & 01) ? 't' : 'T';
-    } else {
-        *out++ = (mode & 01) ? 'x' : '-';
-    }
-    *out = 0;
-}
-
-static void user2str(uid_t uid, char *out, size_t out_size)
-{
-    struct passwd *pw = getpwuid(uid);
-    if(pw) {
-        strlcpy(out, pw->pw_name, out_size);
-    } else {
-        snprintf(out, out_size, "%d", uid);
-    }
-}
-
-static void group2str(gid_t gid, char *out, size_t out_size)
-{
-    struct group *gr = getgrgid(gid);
-    if(gr) {
-        strlcpy(out, gr->gr_name, out_size);
-    } else {
-        snprintf(out, out_size, "%d", gid);
-    }
-}
-
-static int show_total_size(const char *dirname, DIR *d, int flags)
-{
-    struct dirent *de;
-    char tmp[1024];
-    struct stat s;
-    int sum = 0;
-
-    /* run through the directory and sum up the file block sizes */
-    while ((de = readdir(d)) != 0) {
-        if (strcmp(de->d_name, ".") == 0 || strcmp(de->d_name, "..") == 0)
-            continue;
-        if (de->d_name[0] == '.' && (flags & LIST_ALL) == 0)
-            continue;
-
-        if (strcmp(dirname, "/") == 0)
-            snprintf(tmp, sizeof(tmp), "/%s", de->d_name);
-        else
-            snprintf(tmp, sizeof(tmp), "%s/%s", dirname, de->d_name);
-
-        if (lstat(tmp, &s) < 0) {
-            fprintf(stderr, "stat failed on %s: %s\n", tmp, strerror(errno));
-            rewinddir(d);
-            return -1;
-        }
-
-        sum += s.st_blocks / 2;
-    }
-
-    printf("total %d\n", sum);
-    rewinddir(d);
-    return 0;
-}
-
-static int listfile_size(const char *path, const char *filename, struct stat *s,
-                         int flags)
-{
-    if(!s || !path) {
-        return -1;
-    }
-
-    /* blocks are 512 bytes, we want output to be KB */
-    if ((flags & LIST_SIZE) != 0) {
-        printf("%lld ", (long long)s->st_blocks / 2);
-    }
-
-    if ((flags & LIST_CLASSIFY) != 0) {
-        char filetype = mode2kind(s->st_mode);
-        if (filetype != 'l') {
-            printf("%c ", filetype);
-        } else {
-            struct stat link_dest;
-            if (!stat(path, &link_dest)) {
-                printf("l%c ", mode2kind(link_dest.st_mode));
-            } else {
-                fprintf(stderr, "stat '%s' failed: %s\n", path, strerror(errno));
-                printf("l? ");
-            }
-        }
-    }
-
-    printf("%s\n", filename);
-
-    return 0;
-}
-
-static int listfile_long(const char *path, struct stat *s, int flags)
-{
-    char date[32];
-    char mode[16];
-    char user[32];
-    char group[32];
-    const char *name;
-
-    if(!s || !path) {
-        return -1;
-    }
-
-    /* name is anything after the final '/', or the whole path if none*/
-    name = strrchr(path, '/');
-    if(name == 0) {
-        name = path;
-    } else {
-        name++;
-    }
-
-    strmode(s->st_mode, mode);
-    if (flags & LIST_LONG_NUMERIC) {
-        snprintf(user, sizeof(user), "%u", s->st_uid);
-        snprintf(group, sizeof(group), "%u", s->st_gid);
-    } else {
-        user2str(s->st_uid, user, sizeof(user));
-        group2str(s->st_gid, group, sizeof(group));
-    }
-
-    strftime(date, 32, "%Y-%m-%d %H:%M", localtime((const time_t*)&s->st_mtime));
-    date[31] = 0;
-
-// 12345678901234567890123456789012345678901234567890123456789012345678901234567890
-// MMMMMMMM UUUUUUUU GGGGGGGGG XXXXXXXX YYYY-MM-DD HH:MM NAME (->LINK)
-
-    switch(s->st_mode & S_IFMT) {
-    case S_IFBLK:
-    case S_IFCHR:
-        printf("%s %-8s %-8s %3d, %3d %s %s\n",
-               mode, user, group,
-               major(s->st_rdev), minor(s->st_rdev),
-               date, name);
-        break;
-    case S_IFREG:
-        printf("%s %-8s %-8s %8lld %s %s\n",
-               mode, user, group, (long long)s->st_size, date, name);
-        break;
-    case S_IFLNK: {
-        char linkto[256];
-        ssize_t len;
-
-        len = readlink(path, linkto, 256);
-        if(len < 0) return -1;
-
-        if(len > 255) {
-            linkto[252] = '.';
-            linkto[253] = '.';
-            linkto[254] = '.';
-            linkto[255] = 0;
-        } else {
-            linkto[len] = 0;
-        }
-
-        printf("%s %-8s %-8s          %s %s -> %s\n",
-               mode, user, group, date, name, linkto);
-        break;
-    }
-    default:
-        printf("%s %-8s %-8s          %s %s\n",
-               mode, user, group, date, name);
-
-    }
-    return 0;
-}
-
-static int listfile_maclabel(const char *path, struct stat *s)
-{
-    char mode[16];
-    char user[32];
-    char group[32];
-    char *maclabel = NULL;
-    const char *name;
-
-    if(!s || !path) {
-        return -1;
-    }
-
-    /* name is anything after the final '/', or the whole path if none*/
-    name = strrchr(path, '/');
-    if(name == 0) {
-        name = path;
-    } else {
-        name++;
-    }
-
-    lgetfilecon(path, &maclabel);
-    if (!maclabel) {
-        return -1;
-    }
-
-    strmode(s->st_mode, mode);
-    user2str(s->st_uid, user, sizeof(user));
-    group2str(s->st_gid, group, sizeof(group));
-
-    switch(s->st_mode & S_IFMT) {
-    case S_IFLNK: {
-        char linkto[256];
-        ssize_t len;
-
-        len = readlink(path, linkto, sizeof(linkto));
-        if(len < 0) return -1;
-
-        if((size_t)len > sizeof(linkto)-1) {
-            linkto[sizeof(linkto)-4] = '.';
-            linkto[sizeof(linkto)-3] = '.';
-            linkto[sizeof(linkto)-2] = '.';
-            linkto[sizeof(linkto)-1] = 0;
-        } else {
-            linkto[len] = 0;
-        }
-
-        printf("%s %-8s %-8s          %s %s -> %s\n",
-               mode, user, group, maclabel, name, linkto);
-        break;
-    }
-    default:
-        printf("%s %-8s %-8s          %s %s\n",
-               mode, user, group, maclabel, name);
-
-    }
-
-    free(maclabel);
-
-    return 0;
-}
-
-static int listfile(const char *dirname, const char *filename, int flags)
-{
-    struct stat s;
-
-    if ((flags & (LIST_LONG | LIST_SIZE | LIST_CLASSIFY | LIST_MACLABEL | LIST_INODE)) == 0) {
-        printf("%s\n", filename);
-        return 0;
-    }
-
-    char tmp[4096];
-    const char* pathname = filename;
-
-    if (dirname != NULL) {
-        snprintf(tmp, sizeof(tmp), "%s/%s", dirname, filename);
-        pathname = tmp;
-    } else {
-        pathname = filename;
-    }
-
-    if(lstat(pathname, &s) < 0) {
-        fprintf(stderr, "lstat '%s' failed: %s\n", pathname, strerror(errno));
-        return -1;
-    }
-
-    if(flags & LIST_INODE) {
-        printf("%8llu ", (unsigned long long)s.st_ino);
-    }
-
-    if ((flags & LIST_MACLABEL) != 0) {
-        return listfile_maclabel(pathname, &s);
-    } else if ((flags & LIST_LONG) != 0) {
-        return listfile_long(pathname, &s, flags);
-    } else /*((flags & LIST_SIZE) != 0)*/ {
-        return listfile_size(pathname, filename, &s, flags);
-    }
-}
-
-static int listdir(const char *name, int flags)
-{
-    char tmp[4096];
-    DIR *d;
-    struct dirent *de;
-    strlist_t  files = STRLIST_INITIALIZER;
-
-    d = opendir(name);
-    if(d == 0) {
-        fprintf(stderr, "opendir failed, %s\n", strerror(errno));
-        return -1;
-    }
-
-    if ((flags & LIST_SIZE) != 0) {
-        show_total_size(name, d, flags);
-    }
-
-    while((de = readdir(d)) != 0){
-        if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) continue;
-        if(de->d_name[0] == '.' && (flags & LIST_ALL) == 0) continue;
-
-        strlist_append_dup(&files, de->d_name);
-    }
-
-    strlist_sort(&files);
-    STRLIST_FOREACH(&files, filename, listfile(name, filename, flags));
-    strlist_done(&files);
-
-    if (flags & LIST_RECURSIVE) {
-        strlist_t subdirs = STRLIST_INITIALIZER;
-
-        rewinddir(d);
-
-        while ((de = readdir(d)) != 0) {
-            struct stat s;
-            int err;
-
-            if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, ".."))
-                continue;
-            if (de->d_name[0] == '.' && (flags & LIST_ALL) == 0)
-                continue;
-
-            if (!strcmp(name, "/"))
-                snprintf(tmp, sizeof(tmp), "/%s", de->d_name);
-            else
-                snprintf(tmp, sizeof(tmp), "%s/%s", name, de->d_name);
-
-            /*
-             * If the name ends in a '/', use stat() so we treat it like a
-             * directory even if it's a symlink.
-             */
-            if (tmp[strlen(tmp)-1] == '/')
-                err = stat(tmp, &s);
-            else
-                err = lstat(tmp, &s);
-
-            if (err < 0) {
-                perror(tmp);
-                closedir(d);
-                return -1;
-            }
-
-            if (S_ISDIR(s.st_mode)) {
-                strlist_append_dup(&subdirs, tmp);
-            }
-        }
-        strlist_sort(&subdirs);
-        STRLIST_FOREACH(&subdirs, path, {
-            printf("\n%s:\n", path);
-            listdir(path, flags);
-        });
-        strlist_done(&subdirs);
-    }
-
-    closedir(d);
-    return 0;
-}
-
-static int listpath(const char *name, int flags)
-{
-    struct stat s;
-    int err;
-
-    /*
-     * If the name ends in a '/', use stat() so we treat it like a
-     * directory even if it's a symlink.
-     */
-    if (name[strlen(name)-1] == '/')
-        err = stat(name, &s);
-    else
-        err = lstat(name, &s);
-
-    if (err < 0) {
-        perror(name);
-        return -1;
-    }
-
-    if ((flags & LIST_DIRECTORIES) == 0 && S_ISDIR(s.st_mode)) {
-        if (flags & LIST_RECURSIVE)
-            printf("\n%s:\n", name);
-        return listdir(name, flags);
-    } else {
-        /* yeah this calls stat() again*/
-        return listfile(NULL, name, flags);
-    }
-}
-
-int ls_main(int argc, char **argv)
-{
-    int flags = 0;
-
-    if(argc > 1) {
-        int i;
-        int err = 0;
-        strlist_t  files = STRLIST_INITIALIZER;
-
-        for (i = 1; i < argc; i++) {
-            if (argv[i][0] == '-') {
-                /* an option ? */
-                const char *arg = argv[i]+1;
-                while (arg[0]) {
-                    switch (arg[0]) {
-                    case 'l': flags |= LIST_LONG; break;
-                    case 'n': flags |= LIST_LONG | LIST_LONG_NUMERIC; break;
-                    case 's': flags |= LIST_SIZE; break;
-                    case 'R': flags |= LIST_RECURSIVE; break;
-                    case 'd': flags |= LIST_DIRECTORIES; break;
-                    case 'Z': flags |= LIST_MACLABEL; break;
-                    case 'a': flags |= LIST_ALL; break;
-                    case 'F': flags |= LIST_CLASSIFY; break;
-                    case 'i': flags |= LIST_INODE; break;
-                    default:
-                        fprintf(stderr, "%s: Unknown option '-%c'. Aborting.\n", "ls", arg[0]);
-                        exit(1);
-                    }
-                    arg++;
-                }
-            } else {
-                /* not an option ? */
-                strlist_append_dup(&files, argv[i]);
-            }
-        }
-
-        if (files.count > 0) {
-            STRLIST_FOREACH(&files, path, {
-                if (listpath(path, flags) != 0) {
-                    err = EXIT_FAILURE;
-                }
-            });
-            strlist_done(&files);
-            return err;
-        }
-    }
-
-    // list working directory if no files or directories were specified
-    return listpath(".", flags);
-}