Revert "[res] Optimize isUpToDate() for ApkAssets"

Revert submission 31021037

Reason for revert: Droidmonitor created revert due to b/388342212. Will be verifying through ABTD before submission.

Reverted changes: /q/submissionid:31021037

Change-Id: I7d0eeaf7476c66f5276c68320f93f2b56953d531

1 files changed, 30 insertions, 39 deletions

diff --git a/libs/androidfw/misc.cpp b/libs/androidfw/misc.cpp
index 26eb320805c9..32f3624a3aee 100644
--- a/libs/androidfw/misc.cpp
+++ b/libs/androidfw/misc.cpp
@@ -16,10 +16,10 @@
 
 #define LOG_TAG "misc"
 
-#include "androidfw/misc.h"
-
-#include <errno.h>
-#include <sys/stat.h>
+//
+// Miscellaneous utility functions.
+//
+#include <androidfw/misc.h>
 
 #include "android-base/logging.h"
 
@@ -28,7 +28,9 @@
 #include <sys/vfs.h>
 #endif  // __linux__
 
-#include <array>
+#include <errno.h>
+#include <sys/stat.h>
+
 #include <cstdio>
 #include <cstring>
 #include <tuple>
@@ -38,26 +40,28 @@ namespace android {
 /*
  * Get a file's type.
  */
-FileType getFileType(const char* fileName) {
-  struct stat sb;
-  if (stat(fileName, &sb) < 0) {
-    if (errno == ENOENT || errno == ENOTDIR)
-      return kFileTypeNonexistent;
-    else {
-      PLOG(ERROR) << "getFileType(): stat(" << fileName << ") failed";
-      return kFileTypeUnknown;
-    }
-  } else {
-    if (S_ISREG(sb.st_mode))
-      return kFileTypeRegular;
-    else if (S_ISDIR(sb.st_mode))
-      return kFileTypeDirectory;
-    else if (S_ISCHR(sb.st_mode))
-      return kFileTypeCharDev;
-    else if (S_ISBLK(sb.st_mode))
-      return kFileTypeBlockDev;
-    else if (S_ISFIFO(sb.st_mode))
-      return kFileTypeFifo;
+FileType getFileType(const char* fileName)
+{
+    struct stat sb;
+
+    if (stat(fileName, &sb) < 0) {
+        if (errno == ENOENT || errno == ENOTDIR)
+            return kFileTypeNonexistent;
+        else {
+            PLOG(ERROR) << "getFileType(): stat(" << fileName << ") failed";
+            return kFileTypeUnknown;
+        }
+    } else {
+        if (S_ISREG(sb.st_mode))
+            return kFileTypeRegular;
+        else if (S_ISDIR(sb.st_mode))
+            return kFileTypeDirectory;
+        else if (S_ISCHR(sb.st_mode))
+            return kFileTypeCharDev;
+        else if (S_ISBLK(sb.st_mode))
+            return kFileTypeBlockDev;
+        else if (S_ISFIFO(sb.st_mode))
+            return kFileTypeFifo;
 #if defined(S_ISLNK)
         else if (S_ISLNK(sb.st_mode))
             return kFileTypeSymlink;
@@ -71,7 +75,7 @@ FileType getFileType(const char* fileName) {
     }
 }
 
-ModDate getModDate(const struct stat& st) {
+static ModDate getModDate(const struct stat& st) {
 #ifdef _WIN32
   return st.st_mtime;
 #elif defined(__APPLE__)
@@ -109,14 +113,8 @@ bool isReadonlyFilesystem(const char*) {
 bool isReadonlyFilesystem(int) {
     return false;
 }
-bool isKnownWritablePath(const char*) {
-  return false;
-}
 #else   // __linux__
 bool isReadonlyFilesystem(const char* path) {
-  if (isKnownWritablePath(path)) {
-    return false;
-  }
     struct statfs sfs;
     if (::statfs(path, &sfs)) {
         PLOG(ERROR) << "isReadonlyFilesystem(): statfs(" << path << ") failed";
@@ -133,13 +131,6 @@ bool isReadonlyFilesystem(int fd) {
     }
     return (sfs.f_flags & ST_RDONLY) != 0;
 }
-
-bool isKnownWritablePath(const char* path) {
-  // We know that all paths in /data/ are writable.
-  static constexpr char kRwPrefix[] = "/data/";
-  return strncmp(kRwPrefix, path, std::size(kRwPrefix) - 1) == 0;
-}
-
 #endif  // __linux__
 
 }  // namespace android