From ba9a42aa7e10686de186636fe9fecbf8c4cc7c19 Mon Sep 17 00:00:00 2001
From: Tao Bao <tbao@google.com>
Date: Tue, 23 Jun 2015 23:23:33 -0700
Subject: recovery: Switch applypatch/ and updater/ to cpp.

Mostly trivial changes to make cpp compiler happy.

Change-Id: I69bd1d96fcccf506007f6144faf37e11cfba1270
---
 applypatch/freecache.c | 172 -------------------------------------------------
 1 file changed, 172 deletions(-)
 delete mode 100644 applypatch/freecache.c

(limited to 'applypatch/freecache.c')

diff --git a/applypatch/freecache.c b/applypatch/freecache.c
deleted file mode 100644
index 9827fda06..000000000
--- a/applypatch/freecache.c
+++ /dev/null
@@ -1,172 +0,0 @@
-#include <errno.h>
-#include <libgen.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/statfs.h>
-#include <unistd.h>
-#include <dirent.h>
-#include <ctype.h>
-
-#include "applypatch.h"
-
-static int EliminateOpenFiles(char** files, int file_count) {
-  DIR* d;
-  struct dirent* de;
-  d = opendir("/proc");
-  if (d == NULL) {
-    printf("error opening /proc: %s\n", strerror(errno));
-    return -1;
-  }
-  while ((de = readdir(d)) != 0) {
-    int i;
-    for (i = 0; de->d_name[i] != '\0' && isdigit(de->d_name[i]); ++i);
-    if (de->d_name[i]) continue;
-
-    // de->d_name[i] is numeric
-
-    char path[FILENAME_MAX];
-    strcpy(path, "/proc/");
-    strcat(path, de->d_name);
-    strcat(path, "/fd/");
-
-    DIR* fdd;
-    struct dirent* fdde;
-    fdd = opendir(path);
-    if (fdd == NULL) {
-      printf("error opening %s: %s\n", path, strerror(errno));
-      continue;
-    }
-    while ((fdde = readdir(fdd)) != 0) {
-      char fd_path[FILENAME_MAX];
-      char link[FILENAME_MAX];
-      strcpy(fd_path, path);
-      strcat(fd_path, fdde->d_name);
-
-      int count;
-      count = readlink(fd_path, link, sizeof(link)-1);
-      if (count >= 0) {
-        link[count] = '\0';
-
-        // This is inefficient, but it should only matter if there are
-        // lots of files in /cache, and lots of them are open (neither
-        // of which should be true, especially in recovery).
-        if (strncmp(link, "/cache/", 7) == 0) {
-          int j;
-          for (j = 0; j < file_count; ++j) {
-            if (files[j] && strcmp(files[j], link) == 0) {
-              printf("%s is open by %s\n", link, de->d_name);
-              free(files[j]);
-              files[j] = NULL;
-            }
-          }
-        }
-      }
-    }
-    closedir(fdd);
-  }
-  closedir(d);
-
-  return 0;
-}
-
-int FindExpendableFiles(char*** names, int* entries) {
-  DIR* d;
-  struct dirent* de;
-  int size = 32;
-  *entries = 0;
-  *names = malloc(size * sizeof(char*));
-
-  char path[FILENAME_MAX];
-
-  // We're allowed to delete unopened regular files in any of these
-  // directories.
-  const char* dirs[2] = {"/cache", "/cache/recovery/otatest"};
-
-  unsigned int i;
-  for (i = 0; i < sizeof(dirs)/sizeof(dirs[0]); ++i) {
-    d = opendir(dirs[i]);
-    if (d == NULL) {
-      printf("error opening %s: %s\n", dirs[i], strerror(errno));
-      continue;
-    }
-
-    // Look for regular files in the directory (not in any subdirectories).
-    while ((de = readdir(d)) != 0) {
-      strcpy(path, dirs[i]);
-      strcat(path, "/");
-      strcat(path, de->d_name);
-
-      // We can't delete CACHE_TEMP_SOURCE; if it's there we might have
-      // restarted during installation and could be depending on it to
-      // be there.
-      if (strcmp(path, CACHE_TEMP_SOURCE) == 0) continue;
-
-      struct stat st;
-      if (stat(path, &st) == 0 && S_ISREG(st.st_mode)) {
-        if (*entries >= size) {
-          size *= 2;
-          *names = realloc(*names, size * sizeof(char*));
-        }
-        (*names)[(*entries)++] = strdup(path);
-      }
-    }
-
-    closedir(d);
-  }
-
-  printf("%d regular files in deletable directories\n", *entries);
-
-  if (EliminateOpenFiles(*names, *entries) < 0) {
-    return -1;
-  }
-
-  return 0;
-}
-
-int MakeFreeSpaceOnCache(size_t bytes_needed) {
-  size_t free_now = FreeSpaceForFile("/cache");
-  printf("%ld bytes free on /cache (%ld needed)\n",
-         (long)free_now, (long)bytes_needed);
-
-  if (free_now >= bytes_needed) {
-    return 0;
-  }
-
-  char** names;
-  int entries;
-
-  if (FindExpendableFiles(&names, &entries) < 0) {
-    return -1;
-  }
-
-  if (entries == 0) {
-    // nothing we can delete to free up space!
-    printf("no files can be deleted to free space on /cache\n");
-    return -1;
-  }
-
-  // We could try to be smarter about which files to delete:  the
-  // biggest ones?  the smallest ones that will free up enough space?
-  // the oldest?  the newest?
-  //
-  // Instead, we'll be dumb.
-
-  int i;
-  for (i = 0; i < entries && free_now < bytes_needed; ++i) {
-    if (names[i]) {
-      unlink(names[i]);
-      free_now = FreeSpaceForFile("/cache");
-      printf("deleted %s; now %ld bytes free\n", names[i], (long)free_now);
-      free(names[i]);
-    }
-  }
-
-  for (; i < entries; ++i) {
-    free(names[i]);
-  }
-  free(names);
-
-  return (free_now >= bytes_needed) ? 0 : -1;
-}
-- 
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