recovery: handle security footer before passing size to mke2fs am: 5e47d5161a
am: e2d31361ef  -s ours

Change-Id: I82c0f53a19c4c3b8311a432023a29fef93047a03
diff --git a/edify/Android.mk b/edify/Android.mk
index d8058c1..ffd54c2 100644
--- a/edify/Android.mk
+++ b/edify/Android.mk
@@ -34,7 +34,6 @@
 LOCAL_YACCFLAGS := -v
 LOCAL_CPPFLAGS += -Wno-unused-parameter
 LOCAL_CPPFLAGS += -Wno-deprecated-register
-LOCAL_CLANG := true
 LOCAL_C_INCLUDES += $(LOCAL_PATH)/..
 LOCAL_STATIC_LIBRARIES += libbase
 
@@ -51,7 +50,6 @@
 LOCAL_CPPFLAGS := -Wno-unused-parameter
 LOCAL_CPPFLAGS += -Wno-deprecated-register
 LOCAL_MODULE := libedify
-LOCAL_CLANG := true
 LOCAL_C_INCLUDES += $(LOCAL_PATH)/..
 LOCAL_STATIC_LIBRARIES += libbase
 
diff --git a/minadbd/Android.mk b/minadbd/Android.mk
index de0b0c8..8d86fd6 100644
--- a/minadbd/Android.mk
+++ b/minadbd/Android.mk
@@ -15,7 +15,6 @@
     minadbd.cpp \
     minadbd_services.cpp \
 
-LOCAL_CLANG := true
 LOCAL_MODULE := libminadbd
 LOCAL_CFLAGS := $(minadbd_cflags)
 LOCAL_CONLY_FLAGS := -Wimplicit-function-declaration
@@ -27,7 +26,6 @@
 
 include $(CLEAR_VARS)
 
-LOCAL_CLANG := true
 LOCAL_MODULE := minadbd_test
 LOCAL_COMPATIBILITY_SUITE := device-tests
 LOCAL_SRC_FILES := fuse_adb_provider_test.cpp
diff --git a/otafault/Android.mk b/otafault/Android.mk
index ec4cdb3..7b5aab0 100644
--- a/otafault/Android.mk
+++ b/otafault/Android.mk
@@ -32,7 +32,6 @@
 LOCAL_SRC_FILES := config.cpp ota_io.cpp
 LOCAL_MODULE_TAGS := eng
 LOCAL_MODULE := libotafault
-LOCAL_CLANG := true
 LOCAL_C_INCLUDES := bootable/recovery
 LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)
 LOCAL_WHOLE_STATIC_LIBRARIES := $(otafault_static_libs)
diff --git a/otautil/DirUtil.cpp b/otautil/DirUtil.cpp
index e08e360..ad344de 100644
--- a/otautil/DirUtil.cpp
+++ b/otautil/DirUtil.cpp
@@ -160,59 +160,3 @@
     }
     return 0;
 }
-
-int
-dirUnlinkHierarchy(const char *path)
-{
-    struct stat st;
-    DIR *dir;
-    struct dirent *de;
-    int fail = 0;
-
-    /* is it a file or directory? */
-    if (lstat(path, &st) < 0) {
-        return -1;
-    }
-
-    /* a file, so unlink it */
-    if (!S_ISDIR(st.st_mode)) {
-        return unlink(path);
-    }
-
-    /* a directory, so open handle */
-    dir = opendir(path);
-    if (dir == NULL) {
-        return -1;
-    }
-
-    /* recurse over components */
-    errno = 0;
-    while ((de = readdir(dir)) != NULL) {
-        //TODO: don't blow the stack
-        char dn[PATH_MAX];
-        if (!strcmp(de->d_name, "..") || !strcmp(de->d_name, ".")) {
-            continue;
-        }
-        snprintf(dn, sizeof(dn), "%s/%s", path, de->d_name);
-        if (dirUnlinkHierarchy(dn) < 0) {
-            fail = 1;
-            break;
-        }
-        errno = 0;
-    }
-    /* in case readdir or unlink_recursive failed */
-    if (fail || errno < 0) {
-        int save = errno;
-        closedir(dir);
-        errno = save;
-        return -1;
-    }
-
-    /* close directory handle */
-    if (closedir(dir) < 0) {
-        return -1;
-    }
-
-    /* delete target directory */
-    return rmdir(path);
-}
diff --git a/otautil/DirUtil.h b/otautil/DirUtil.h
index 85b83c3..beecc10 100644
--- a/otautil/DirUtil.h
+++ b/otautil/DirUtil.h
@@ -17,13 +17,8 @@
 #ifndef MINZIP_DIRUTIL_H_
 #define MINZIP_DIRUTIL_H_
 
-#include <stdbool.h>
 #include <utime.h>
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 struct selabel_handle;
 
 /* Like "mkdir -p", try to guarantee that all directories
@@ -43,12 +38,4 @@
         const struct utimbuf *timestamp, bool stripFileName,
         struct selabel_handle* sehnd);
 
-/* rm -rf <path>
- */
-int dirUnlinkHierarchy(const char *path);
-
-#ifdef __cplusplus
-}
-#endif
-
 #endif  // MINZIP_DIRUTIL_H_
diff --git a/roots.cpp b/roots.cpp
index 29f55b9..46e5c1b 100644
--- a/roots.cpp
+++ b/roots.cpp
@@ -16,148 +16,140 @@
 
 #include "roots.h"
 
-#include <errno.h>
+#include <ctype.h>
+#include <fcntl.h>
 #include <stdlib.h>
 #include <sys/mount.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
-#include <ctype.h>
-#include <fcntl.h>
 
 #include <android-base/logging.h>
 #include <android-base/properties.h>
 #include <android-base/stringprintf.h>
 #include <android-base/unique_fd.h>
+#include <cryptfs.h>
 #include <ext4_utils/wipe.h>
 #include <fs_mgr.h>
 
 #include "common.h"
 #include "mounts.h"
-#include "cryptfs.h"
 
-static struct fstab *fstab = NULL;
+static struct fstab* fstab = nullptr;
 
-extern struct selabel_handle *sehandle;
+extern struct selabel_handle* sehandle;
 
-void load_volume_table()
-{
-    int i;
-    int ret;
+void load_volume_table() {
+  fstab = fs_mgr_read_fstab_default();
+  if (!fstab) {
+    LOG(ERROR) << "Failed to read default fstab";
+    return;
+  }
 
-    fstab = fs_mgr_read_fstab_default();
-    if (!fstab) {
-        LOG(ERROR) << "failed to read default fstab";
-        return;
-    }
+  int ret = fs_mgr_add_entry(fstab, "/tmp", "ramdisk", "ramdisk");
+  if (ret == -1) {
+    LOG(ERROR) << "Failed to add /tmp entry to fstab";
+    fs_mgr_free_fstab(fstab);
+    fstab = nullptr;
+    return;
+  }
 
-    ret = fs_mgr_add_entry(fstab, "/tmp", "ramdisk", "ramdisk");
-    if (ret < 0 ) {
-        LOG(ERROR) << "failed to add /tmp entry to fstab";
-        fs_mgr_free_fstab(fstab);
-        fstab = NULL;
-        return;
-    }
-
-    printf("recovery filesystem table\n");
-    printf("=========================\n");
-    for (i = 0; i < fstab->num_entries; ++i) {
-        Volume* v = &fstab->recs[i];
-        printf("  %d %s %s %s %lld\n", i, v->mount_point, v->fs_type,
-               v->blk_device, v->length);
-    }
-    printf("\n");
+  printf("recovery filesystem table\n");
+  printf("=========================\n");
+  for (int i = 0; i < fstab->num_entries; ++i) {
+    const Volume* v = &fstab->recs[i];
+    printf("  %d %s %s %s %lld\n", i, v->mount_point, v->fs_type, v->blk_device, v->length);
+  }
+  printf("\n");
 }
 
 Volume* volume_for_path(const char* path) {
-    return fs_mgr_get_entry_for_mount_point(fstab, path);
+  return fs_mgr_get_entry_for_mount_point(fstab, path);
 }
 
 // Mount the volume specified by path at the given mount_point.
 int ensure_path_mounted_at(const char* path, const char* mount_point) {
-    Volume* v = volume_for_path(path);
-    if (v == NULL) {
-        LOG(ERROR) << "unknown volume for path [" << path << "]";
-        return -1;
-    }
-    if (strcmp(v->fs_type, "ramdisk") == 0) {
-        // the ramdisk is always mounted.
-        return 0;
-    }
-
-    if (!scan_mounted_volumes()) {
-        LOG(ERROR) << "failed to scan mounted volumes";
-        return -1;
-    }
-
-    if (!mount_point) {
-        mount_point = v->mount_point;
-    }
-
-    MountedVolume* mv = find_mounted_volume_by_mount_point(mount_point);
-    if (mv) {
-        // volume is already mounted
-        return 0;
-    }
-
-    mkdir(mount_point, 0755);  // in case it doesn't already exist
-
-    if (strcmp(v->fs_type, "ext4") == 0 ||
-               strcmp(v->fs_type, "squashfs") == 0 ||
-               strcmp(v->fs_type, "vfat") == 0) {
-        int result = mount(v->blk_device, mount_point, v->fs_type, v->flags, v->fs_options);
-        if (result == -1 && fs_mgr_is_formattable(v)) {
-            LOG(ERROR) << "failed to mount " << mount_point << " (" << strerror(errno)
-                       << ") , formatting.....";
-            bool crypt_footer = fs_mgr_is_encryptable(v) && !strcmp(v->key_loc, "footer");
-            if (fs_mgr_do_format(v, crypt_footer) == 0) {
-                result = mount(v->blk_device, mount_point, v->fs_type, v->flags, v->fs_options);
-            } else {
-                PLOG(ERROR) << "failed to format " << mount_point;
-                return -1;
-            }
-        }
-
-        if (result == -1) {
-            PLOG(ERROR) << "failed to mount " << mount_point;
-            return -1;
-        }
-        return 0;
-    }
-
-    LOG(ERROR) << "unknown fs_type \"" << v->fs_type << "\" for " << mount_point;
+  Volume* v = volume_for_path(path);
+  if (v == nullptr) {
+    LOG(ERROR) << "unknown volume for path [" << path << "]";
     return -1;
+  }
+  if (strcmp(v->fs_type, "ramdisk") == 0) {
+    // The ramdisk is always mounted.
+    return 0;
+  }
+
+  if (!scan_mounted_volumes()) {
+    LOG(ERROR) << "Failed to scan mounted volumes";
+    return -1;
+  }
+
+  if (!mount_point) {
+    mount_point = v->mount_point;
+  }
+
+  const MountedVolume* mv = find_mounted_volume_by_mount_point(mount_point);
+  if (mv != nullptr) {
+    // Volume is already mounted.
+    return 0;
+  }
+
+  mkdir(mount_point, 0755);  // in case it doesn't already exist
+
+  if (strcmp(v->fs_type, "ext4") == 0 || strcmp(v->fs_type, "squashfs") == 0 ||
+      strcmp(v->fs_type, "vfat") == 0) {
+    int result = mount(v->blk_device, mount_point, v->fs_type, v->flags, v->fs_options);
+    if (result == -1 && fs_mgr_is_formattable(v)) {
+      PLOG(ERROR) << "Failed to mount " << mount_point << "; formatting";
+      bool crypt_footer = fs_mgr_is_encryptable(v) && !strcmp(v->key_loc, "footer");
+      if (fs_mgr_do_format(v, crypt_footer) == 0) {
+        result = mount(v->blk_device, mount_point, v->fs_type, v->flags, v->fs_options);
+      } else {
+        PLOG(ERROR) << "Failed to format " << mount_point;
+        return -1;
+      }
+    }
+
+    if (result == -1) {
+      PLOG(ERROR) << "Failed to mount " << mount_point;
+      return -1;
+    }
+    return 0;
+  }
+
+  LOG(ERROR) << "unknown fs_type \"" << v->fs_type << "\" for " << mount_point;
+  return -1;
 }
 
 int ensure_path_mounted(const char* path) {
-    // Mount at the default mount point.
-    return ensure_path_mounted_at(path, nullptr);
+  // Mount at the default mount point.
+  return ensure_path_mounted_at(path, nullptr);
 }
 
 int ensure_path_unmounted(const char* path) {
-    Volume* v = volume_for_path(path);
-    if (v == NULL) {
-        LOG(ERROR) << "unknown volume for path [" << path << "]";
-        return -1;
-    }
-    if (strcmp(v->fs_type, "ramdisk") == 0) {
-        // the ramdisk is always mounted; you can't unmount it.
-        return -1;
-    }
+  const Volume* v = volume_for_path(path);
+  if (v == nullptr) {
+    LOG(ERROR) << "unknown volume for path [" << path << "]";
+    return -1;
+  }
+  if (strcmp(v->fs_type, "ramdisk") == 0) {
+    // The ramdisk is always mounted; you can't unmount it.
+    return -1;
+  }
 
-    if (!scan_mounted_volumes()) {
-        LOG(ERROR) << "failed to scan mounted volumes";
-        return -1;
-    }
+  if (!scan_mounted_volumes()) {
+    LOG(ERROR) << "Failed to scan mounted volumes";
+    return -1;
+  }
 
-    MountedVolume* mv = find_mounted_volume_by_mount_point(v->mount_point);
-    if (mv == NULL) {
-        // volume is already unmounted
-        return 0;
-    }
+  MountedVolume* mv = find_mounted_volume_by_mount_point(v->mount_point);
+  if (mv == nullptr) {
+    // Volume is already unmounted.
+    return 0;
+  }
 
-    return unmount_mounted_volume(mv);
+  return unmount_mounted_volume(mv);
 }
 
 static int exec_cmd(const char* path, char* const argv[]) {
@@ -321,7 +313,7 @@
 }
 
 int format_volume(const char* volume) {
-    return format_volume(volume, NULL);
+  return format_volume(volume, nullptr);
 }
 
 int setup_install_mounts() {
@@ -339,12 +331,12 @@
 
     if (strcmp(v->mount_point, "/tmp") == 0 || strcmp(v->mount_point, "/cache") == 0) {
       if (ensure_path_mounted(v->mount_point) != 0) {
-        LOG(ERROR) << "failed to mount " << v->mount_point;
+        LOG(ERROR) << "Failed to mount " << v->mount_point;
         return -1;
       }
     } else {
       if (ensure_path_unmounted(v->mount_point) != 0) {
-        LOG(ERROR) << "failed to unmount " << v->mount_point;
+        LOG(ERROR) << "Failed to unmount " << v->mount_point;
         return -1;
       }
     }
diff --git a/tests/unit/dirutil_test.cpp b/tests/unit/dirutil_test.cpp
index 5e2ae4f..e62032c 100644
--- a/tests/unit/dirutil_test.cpp
+++ b/tests/unit/dirutil_test.cpp
@@ -116,35 +116,3 @@
   ASSERT_EQ(0, rmdir((prefix + "/a/b").c_str()));
   ASSERT_EQ(0, rmdir((prefix + "/a").c_str()));
 }
-
-TEST(DirUtilTest, unlink_invalid) {
-  // File doesn't exist.
-  ASSERT_EQ(-1, dirUnlinkHierarchy("doesntexist"));
-
-  // Nonexistent directory.
-  TemporaryDir td;
-  std::string path(td.path);
-  ASSERT_EQ(-1, dirUnlinkHierarchy((path + "/a").c_str()));
-  ASSERT_EQ(ENOENT, errno);
-}
-
-TEST(DirUtilTest, unlink_smoke) {
-  // Unlink a file.
-  TemporaryFile tf;
-  ASSERT_EQ(0, dirUnlinkHierarchy(tf.path));
-  ASSERT_EQ(-1, access(tf.path, F_OK));
-
-  TemporaryDir td;
-  std::string path(td.path);
-  constexpr mode_t mode = 0700;
-  ASSERT_EQ(0, mkdir((path + "/a").c_str(), mode));
-  ASSERT_EQ(0, mkdir((path + "/a/b").c_str(), mode));
-  ASSERT_EQ(0, mkdir((path + "/a/b/c").c_str(), mode));
-  ASSERT_EQ(0, mkdir((path + "/a/d").c_str(), mode));
-
-  // Remove "../a" recursively.
-  ASSERT_EQ(0, dirUnlinkHierarchy((path + "/a").c_str()));
-
-  // Verify it's gone.
-  ASSERT_EQ(-1, access((path + "/a").c_str(), F_OK));
-}
diff --git a/uncrypt/Android.mk b/uncrypt/Android.mk
index 59084b0..cb60c72 100644
--- a/uncrypt/Android.mk
+++ b/uncrypt/Android.mk
@@ -16,7 +16,6 @@
 
 include $(CLEAR_VARS)
 
-LOCAL_CLANG := true
 LOCAL_SRC_FILES := uncrypt.cpp
 LOCAL_C_INCLUDES := $(LOCAL_PATH)/..
 LOCAL_MODULE := uncrypt
diff --git a/updater/install.cpp b/updater/install.cpp
index bfe91e7..8e54c2e 100644
--- a/updater/install.cpp
+++ b/updater/install.cpp
@@ -95,34 +95,6 @@
   uiPrint(state, error_msg);
 }
 
-static bool is_dir(const std::string& dirpath) {
-  struct stat st;
-  return stat(dirpath.c_str(), &st) == 0 && S_ISDIR(st.st_mode);
-}
-
-// Create all parent directories of name, if necessary.
-static bool make_parents(const std::string& name) {
-  size_t prev_end = 0;
-  while (prev_end < name.size()) {
-    size_t next_end = name.find('/', prev_end + 1);
-    if (next_end == std::string::npos) {
-      break;
-    }
-    std::string dir_path = name.substr(0, next_end);
-    if (!is_dir(dir_path)) {
-      int result = mkdir(dir_path.c_str(), 0700);
-      if (result != 0) {
-        PLOG(ERROR) << "failed to mkdir " << dir_path << " when make parents for " << name;
-        return false;
-      }
-
-      LOG(INFO) << "created [" << dir_path << "]";
-    }
-    prev_end = next_end;
-  }
-  return true;
-}
-
 // mount(fs_type, partition_type, location, mount_point)
 // mount(fs_type, partition_type, location, mount_point, mount_options)