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-rw-r--r--libs/utils/BackupHelpers.cpp1591
1 files changed, 0 insertions, 1591 deletions
diff --git a/libs/utils/BackupHelpers.cpp b/libs/utils/BackupHelpers.cpp
deleted file mode 100644
index 7a817a789..000000000
--- a/libs/utils/BackupHelpers.cpp
+++ /dev/null
@@ -1,1591 +0,0 @@
-/*
- * Copyright (C) 2009 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define LOG_TAG "file_backup_helper"
-
-#include <androidfw/BackupHelpers.h>
-
-#include <utils/KeyedVector.h>
-#include <utils/ByteOrder.h>
-#include <utils/String8.h>
-
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/uio.h>
-#include <sys/stat.h>
-#include <sys/time.h> // for utimes
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <utime.h>
-#include <fcntl.h>
-#include <zlib.h>
-
-#include <cutils/log.h>
-
-namespace android {
-
-#define MAGIC0 0x70616e53 // Snap
-#define MAGIC1 0x656c6946 // File
-
-/*
- * File entity data format (v1):
- *
- * - 4-byte version number of the metadata, little endian (0x00000001 for v1)
- * - 12 bytes of metadata
- * - the file data itself
- *
- * i.e. a 16-byte metadata header followed by the raw file data. If the
- * restore code does not recognize the metadata version, it can still
- * interpret the file data itself correctly.
- *
- * file_metadata_v1:
- *
- * - 4 byte version number === 0x00000001 (little endian)
- * - 4-byte access mode (little-endian)
- * - undefined (8 bytes)
- */
-
-struct file_metadata_v1 {
- int version;
- int mode;
- int undefined_1;
- int undefined_2;
-};
-
-const static int CURRENT_METADATA_VERSION = 1;
-
-#if 1
-#define LOGP(f, x...)
-#else
-#if TEST_BACKUP_HELPERS
-#define LOGP(f, x...) printf(f "\n", x)
-#else
-#define LOGP(x...) ALOGD(x)
-#endif
-#endif
-
-const static int ROUND_UP[4] = { 0, 3, 2, 1 };
-
-static inline int
-round_up(int n)
-{
- return n + ROUND_UP[n % 4];
-}
-
-static int
-read_snapshot_file(int fd, KeyedVector<String8,FileState>* snapshot)
-{
- int bytesRead = 0;
- int amt;
- SnapshotHeader header;
-
- amt = read(fd, &header, sizeof(header));
- if (amt != sizeof(header)) {
- return errno;
- }
- bytesRead += amt;
-
- if (header.magic0 != MAGIC0 || header.magic1 != MAGIC1) {
- ALOGW("read_snapshot_file header.magic0=0x%08x magic1=0x%08x", header.magic0, header.magic1);
- return 1;
- }
-
- for (int i=0; i<header.fileCount; i++) {
- FileState file;
- char filenameBuf[128];
-
- amt = read(fd, &file, sizeof(FileState));
- if (amt != sizeof(FileState)) {
- ALOGW("read_snapshot_file FileState truncated/error with read at %d bytes\n", bytesRead);
- return 1;
- }
- bytesRead += amt;
-
- // filename is not NULL terminated, but it is padded
- int nameBufSize = round_up(file.nameLen);
- char* filename = nameBufSize <= (int)sizeof(filenameBuf)
- ? filenameBuf
- : (char*)malloc(nameBufSize);
- amt = read(fd, filename, nameBufSize);
- if (amt == nameBufSize) {
- snapshot->add(String8(filename, file.nameLen), file);
- }
- bytesRead += amt;
- if (filename != filenameBuf) {
- free(filename);
- }
- if (amt != nameBufSize) {
- ALOGW("read_snapshot_file filename truncated/error with read at %d bytes\n", bytesRead);
- return 1;
- }
- }
-
- if (header.totalSize != bytesRead) {
- ALOGW("read_snapshot_file length mismatch: header.totalSize=%d bytesRead=%d\n",
- header.totalSize, bytesRead);
- return 1;
- }
-
- return 0;
-}
-
-static int
-write_snapshot_file(int fd, const KeyedVector<String8,FileRec>& snapshot)
-{
- int fileCount = 0;
- int bytesWritten = sizeof(SnapshotHeader);
- // preflight size
- const int N = snapshot.size();
- for (int i=0; i<N; i++) {
- const FileRec& g = snapshot.valueAt(i);
- if (!g.deleted) {
- const String8& name = snapshot.keyAt(i);
- bytesWritten += sizeof(FileState) + round_up(name.length());
- fileCount++;
- }
- }
-
- LOGP("write_snapshot_file fd=%d\n", fd);
-
- int amt;
- SnapshotHeader header = { MAGIC0, fileCount, MAGIC1, bytesWritten };
-
- amt = write(fd, &header, sizeof(header));
- if (amt != sizeof(header)) {
- ALOGW("write_snapshot_file error writing header %s", strerror(errno));
- return errno;
- }
-
- for (int i=0; i<N; i++) {
- FileRec r = snapshot.valueAt(i);
- if (!r.deleted) {
- const String8& name = snapshot.keyAt(i);
- int nameLen = r.s.nameLen = name.length();
-
- amt = write(fd, &r.s, sizeof(FileState));
- if (amt != sizeof(FileState)) {
- ALOGW("write_snapshot_file error writing header %s", strerror(errno));
- return 1;
- }
-
- // filename is not NULL terminated, but it is padded
- amt = write(fd, name.string(), nameLen);
- if (amt != nameLen) {
- ALOGW("write_snapshot_file error writing filename %s", strerror(errno));
- return 1;
- }
- int paddingLen = ROUND_UP[nameLen % 4];
- if (paddingLen != 0) {
- int padding = 0xabababab;
- amt = write(fd, &padding, paddingLen);
- if (amt != paddingLen) {
- ALOGW("write_snapshot_file error writing %d bytes of filename padding %s",
- paddingLen, strerror(errno));
- return 1;
- }
- }
- }
- }
-
- return 0;
-}
-
-static int
-write_delete_file(BackupDataWriter* dataStream, const String8& key)
-{
- LOGP("write_delete_file %s\n", key.string());
- return dataStream->WriteEntityHeader(key, -1);
-}
-
-static int
-write_update_file(BackupDataWriter* dataStream, int fd, int mode, const String8& key,
- char const* realFilename)
-{
- LOGP("write_update_file %s (%s) : mode 0%o\n", realFilename, key.string(), mode);
-
- const int bufsize = 4*1024;
- int err;
- int amt;
- int fileSize;
- int bytesLeft;
- file_metadata_v1 metadata;
-
- char* buf = (char*)malloc(bufsize);
- int crc = crc32(0L, Z_NULL, 0);
-
-
- fileSize = lseek(fd, 0, SEEK_END);
- lseek(fd, 0, SEEK_SET);
-
- if (sizeof(metadata) != 16) {
- ALOGE("ERROR: metadata block is the wrong size!");
- }
-
- bytesLeft = fileSize + sizeof(metadata);
- err = dataStream->WriteEntityHeader(key, bytesLeft);
- if (err != 0) {
- free(buf);
- return err;
- }
-
- // store the file metadata first
- metadata.version = tolel(CURRENT_METADATA_VERSION);
- metadata.mode = tolel(mode);
- metadata.undefined_1 = metadata.undefined_2 = 0;
- err = dataStream->WriteEntityData(&metadata, sizeof(metadata));
- if (err != 0) {
- free(buf);
- return err;
- }
- bytesLeft -= sizeof(metadata); // bytesLeft should == fileSize now
-
- // now store the file content
- while ((amt = read(fd, buf, bufsize)) != 0 && bytesLeft > 0) {
- bytesLeft -= amt;
- if (bytesLeft < 0) {
- amt += bytesLeft; // Plus a negative is minus. Don't write more than we promised.
- }
- err = dataStream->WriteEntityData(buf, amt);
- if (err != 0) {
- free(buf);
- return err;
- }
- }
- if (bytesLeft != 0) {
- if (bytesLeft > 0) {
- // Pad out the space we promised in the buffer. We can't corrupt the buffer,
- // even though the data we're sending is probably bad.
- memset(buf, 0, bufsize);
- while (bytesLeft > 0) {
- amt = bytesLeft < bufsize ? bytesLeft : bufsize;
- bytesLeft -= amt;
- err = dataStream->WriteEntityData(buf, amt);
- if (err != 0) {
- free(buf);
- return err;
- }
- }
- }
- ALOGE("write_update_file size mismatch for %s. expected=%d actual=%d."
- " You aren't doing proper locking!", realFilename, fileSize, fileSize-bytesLeft);
- }
-
- free(buf);
- return NO_ERROR;
-}
-
-static int
-write_update_file(BackupDataWriter* dataStream, const String8& key, char const* realFilename)
-{
- int err;
- struct stat st;
-
- err = stat(realFilename, &st);
- if (err < 0) {
- return errno;
- }
-
- int fd = open(realFilename, O_RDONLY);
- if (fd == -1) {
- return errno;
- }
-
- err = write_update_file(dataStream, fd, st.st_mode, key, realFilename);
- close(fd);
- return err;
-}
-
-static int
-compute_crc32(int fd)
-{
- const int bufsize = 4*1024;
- int amt;
-
- char* buf = (char*)malloc(bufsize);
- int crc = crc32(0L, Z_NULL, 0);
-
- lseek(fd, 0, SEEK_SET);
-
- while ((amt = read(fd, buf, bufsize)) != 0) {
- crc = crc32(crc, (Bytef*)buf, amt);
- }
-
- free(buf);
- return crc;
-}
-
-int
-back_up_files(int oldSnapshotFD, BackupDataWriter* dataStream, int newSnapshotFD,
- char const* const* files, char const* const* keys, int fileCount)
-{
- int err;
- KeyedVector<String8,FileState> oldSnapshot;
- KeyedVector<String8,FileRec> newSnapshot;
-
- if (oldSnapshotFD != -1) {
- err = read_snapshot_file(oldSnapshotFD, &oldSnapshot);
- if (err != 0) {
- // On an error, treat this as a full backup.
- oldSnapshot.clear();
- }
- }
-
- for (int i=0; i<fileCount; i++) {
- String8 key(keys[i]);
- FileRec r;
- char const* file = files[i];
- r.file = file;
- struct stat st;
-
- err = stat(file, &st);
- if (err != 0) {
- r.deleted = true;
- } else {
- r.deleted = false;
- r.s.modTime_sec = st.st_mtime;
- r.s.modTime_nsec = 0; // workaround sim breakage
- //r.s.modTime_nsec = st.st_mtime_nsec;
- r.s.mode = st.st_mode;
- r.s.size = st.st_size;
- // we compute the crc32 later down below, when we already have the file open.
-
- if (newSnapshot.indexOfKey(key) >= 0) {
- LOGP("back_up_files key already in use '%s'", key.string());
- return -1;
- }
- }
- newSnapshot.add(key, r);
- }
-
- int n = 0;
- int N = oldSnapshot.size();
- int m = 0;
-
- while (n<N && m<fileCount) {
- const String8& p = oldSnapshot.keyAt(n);
- const String8& q = newSnapshot.keyAt(m);
- FileRec& g = newSnapshot.editValueAt(m);
- int cmp = p.compare(q);
- if (g.deleted || cmp < 0) {
- // file removed
- LOGP("file removed: %s", p.string());
- g.deleted = true; // They didn't mention the file, but we noticed that it's gone.
- dataStream->WriteEntityHeader(p, -1);
- n++;
- }
- else if (cmp > 0) {
- // file added
- LOGP("file added: %s", g.file.string());
- write_update_file(dataStream, q, g.file.string());
- m++;
- }
- else {
- // both files exist, check them
- const FileState& f = oldSnapshot.valueAt(n);
-
- int fd = open(g.file.string(), O_RDONLY);
- if (fd < 0) {
- // We can't open the file. Don't report it as a delete either. Let the
- // server keep the old version. Maybe they'll be able to deal with it
- // on restore.
- LOGP("Unable to open file %s - skipping", g.file.string());
- } else {
- g.s.crc32 = compute_crc32(fd);
-
- LOGP("%s", q.string());
- LOGP(" new: modTime=%d,%d mode=%04o size=%-3d crc32=0x%08x",
- f.modTime_sec, f.modTime_nsec, f.mode, f.size, f.crc32);
- LOGP(" old: modTime=%d,%d mode=%04o size=%-3d crc32=0x%08x",
- g.s.modTime_sec, g.s.modTime_nsec, g.s.mode, g.s.size, g.s.crc32);
- if (f.modTime_sec != g.s.modTime_sec || f.modTime_nsec != g.s.modTime_nsec
- || f.mode != g.s.mode || f.size != g.s.size || f.crc32 != g.s.crc32) {
- write_update_file(dataStream, fd, g.s.mode, p, g.file.string());
- }
-
- close(fd);
- }
- n++;
- m++;
- }
- }
-
- // these were deleted
- while (n<N) {
- dataStream->WriteEntityHeader(oldSnapshot.keyAt(n), -1);
- n++;
- }
-
- // these were added
- while (m<fileCount) {
- const String8& q = newSnapshot.keyAt(m);
- FileRec& g = newSnapshot.editValueAt(m);
- write_update_file(dataStream, q, g.file.string());
- m++;
- }
-
- err = write_snapshot_file(newSnapshotFD, newSnapshot);
-
- return 0;
-}
-
-// Utility function, equivalent to stpcpy(): perform a strcpy, but instead of
-// returning the initial dest, return a pointer to the trailing NUL.
-static char* strcpy_ptr(char* dest, const char* str) {
- if (dest && str) {
- while ((*dest = *str) != 0) {
- dest++;
- str++;
- }
- }
- return dest;
-}
-
-static void calc_tar_checksum(char* buf) {
- // [ 148 : 8 ] checksum -- to be calculated with this field as space chars
- memset(buf + 148, ' ', 8);
-
- uint16_t sum = 0;
- for (uint8_t* p = (uint8_t*) buf; p < ((uint8_t*)buf) + 512; p++) {
- sum += *p;
- }
-
- // Now write the real checksum value:
- // [ 148 : 8 ] checksum: 6 octal digits [leading zeroes], NUL, SPC
- sprintf(buf + 148, "%06o", sum); // the trailing space is already in place
-}
-
-// Returns number of bytes written
-static int write_pax_header_entry(char* buf, const char* key, const char* value) {
- // start with the size of "1 key=value\n"
- int len = strlen(key) + strlen(value) + 4;
- if (len > 9) len++;
- if (len > 99) len++;
- if (len > 999) len++;
- // since PATH_MAX is 4096 we don't expect to have to generate any single
- // header entry longer than 9999 characters
-
- return sprintf(buf, "%d %s=%s\n", len, key, value);
-}
-
-// Wire format to the backup manager service is chunked: each chunk is prefixed by
-// a 4-byte count of its size. A chunk size of zero (four zero bytes) indicates EOD.
-void send_tarfile_chunk(BackupDataWriter* writer, const char* buffer, size_t size) {
- uint32_t chunk_size_no = htonl(size);
- writer->WriteEntityData(&chunk_size_no, 4);
- if (size != 0) writer->WriteEntityData(buffer, size);
-}
-
-int write_tarfile(const String8& packageName, const String8& domain,
- const String8& rootpath, const String8& filepath, BackupDataWriter* writer)
-{
- // In the output stream everything is stored relative to the root
- const char* relstart = filepath.string() + rootpath.length();
- if (*relstart == '/') relstart++; // won't be true when path == rootpath
- String8 relpath(relstart);
-
- // If relpath is empty, it means this is the top of one of the standard named
- // domain directories, so we should just skip it
- if (relpath.length() == 0) {
- return 0;
- }
-
- // Too long a name for the ustar format?
- // "apps/" + packagename + '/' + domainpath < 155 chars
- // relpath < 100 chars
- bool needExtended = false;
- if ((5 + packageName.length() + 1 + domain.length() >= 155) || (relpath.length() >= 100)) {
- needExtended = true;
- }
-
- // Non-7bit-clean path also means needing pax extended format
- if (!needExtended) {
- for (size_t i = 0; i < filepath.length(); i++) {
- if ((filepath[i] & 0x80) != 0) {
- needExtended = true;
- break;
- }
- }
- }
-
- int err = 0;
- struct stat64 s;
- if (lstat64(filepath.string(), &s) != 0) {
- err = errno;
- ALOGE("Error %d (%s) from lstat64(%s)", err, strerror(err), filepath.string());
- return err;
- }
-
- String8 fullname; // for pax later on
- String8 prefix;
-
- const int isdir = S_ISDIR(s.st_mode);
- if (isdir) s.st_size = 0; // directories get no actual data in the tar stream
-
- // !!! TODO: use mmap when possible to avoid churning the buffer cache
- // !!! TODO: this will break with symlinks; need to use readlink(2)
- int fd = open(filepath.string(), O_RDONLY);
- if (fd < 0) {
- err = errno;
- ALOGE("Error %d (%s) from open(%s)", err, strerror(err), filepath.string());
- return err;
- }
-
- // read/write up to this much at a time.
- const size_t BUFSIZE = 32 * 1024;
- char* buf = (char *)calloc(1,BUFSIZE);
- char* paxHeader = buf + 512; // use a different chunk of it as separate scratch
- char* paxData = buf + 1024;
-
- if (buf == NULL) {
- ALOGE("Out of mem allocating transfer buffer");
- err = ENOMEM;
- goto cleanup;
- }
-
- // Magic fields for the ustar file format
- strcat(buf + 257, "ustar");
- strcat(buf + 263, "00");
-
- // [ 265 : 32 ] user name, ignored on restore
- // [ 297 : 32 ] group name, ignored on restore
-
- // [ 100 : 8 ] file mode
- snprintf(buf + 100, 8, "%06o ", s.st_mode & ~S_IFMT);
-
- // [ 108 : 8 ] uid -- ignored in Android format; uids are remapped at restore time
- // [ 116 : 8 ] gid -- ignored in Android format
- snprintf(buf + 108, 8, "0%lo", s.st_uid);
- snprintf(buf + 116, 8, "0%lo", s.st_gid);
-
- // [ 124 : 12 ] file size in bytes
- if (s.st_size > 077777777777LL) {
- // very large files need a pax extended size header
- needExtended = true;
- }
- snprintf(buf + 124, 12, "%011llo", (isdir) ? 0LL : s.st_size);
-
- // [ 136 : 12 ] last mod time as a UTC time_t
- snprintf(buf + 136, 12, "%0lo", s.st_mtime);
-
- // [ 156 : 1 ] link/file type
- uint8_t type;
- if (isdir) {
- type = '5'; // tar magic: '5' == directory
- } else if (S_ISREG(s.st_mode)) {
- type = '0'; // tar magic: '0' == normal file
- } else {
- ALOGW("Error: unknown file mode 0%o [%s]", s.st_mode, filepath.string());
- goto cleanup;
- }
- buf[156] = type;
-
- // [ 157 : 100 ] name of linked file [not implemented]
-
- {
- // Prefix and main relative path. Path lengths have been preflighted.
- if (packageName.length() > 0) {
- prefix = "apps/";
- prefix += packageName;
- }
- if (domain.length() > 0) {
- prefix.appendPath(domain);
- }
-
- // pax extended means we don't put in a prefix field, and put a different
- // string in the basic name field. We can also construct the full path name
- // out of the substrings we've now built.
- fullname = prefix;
- fullname.appendPath(relpath);
-
- // ustar:
- // [ 0 : 100 ]; file name/path
- // [ 345 : 155 ] filename path prefix
- // We only use the prefix area if fullname won't fit in the path
- if (fullname.length() > 100) {
- strncpy(buf, relpath.string(), 100);
- strncpy(buf + 345, prefix.string(), 155);
- } else {
- strncpy(buf, fullname.string(), 100);
- }
- }
-
- // [ 329 : 8 ] and [ 337 : 8 ] devmajor/devminor, not used
-
- ALOGI(" Name: %s", fullname.string());
-
- // If we're using a pax extended header, build & write that here; lengths are
- // already preflighted
- if (needExtended) {
- char sizeStr[32]; // big enough for a 64-bit unsigned value in decimal
- char* p = paxData;
-
- // construct the pax extended header data block
- memset(paxData, 0, BUFSIZE - (paxData - buf));
- int len;
-
- // size header -- calc len in digits by actually rendering the number
- // to a string - brute force but simple
- snprintf(sizeStr, sizeof(sizeStr), "%lld", s.st_size);
- p += write_pax_header_entry(p, "size", sizeStr);
-
- // fullname was generated above with the ustar paths
- p += write_pax_header_entry(p, "path", fullname.string());
-
- // Now we know how big the pax data is
- int paxLen = p - paxData;
-
- // Now build the pax *header* templated on the ustar header
- memcpy(paxHeader, buf, 512);
-
- String8 leaf = fullname.getPathLeaf();
- memset(paxHeader, 0, 100); // rewrite the name area
- snprintf(paxHeader, 100, "PaxHeader/%s", leaf.string());
- memset(paxHeader + 345, 0, 155); // rewrite the prefix area
- strncpy(paxHeader + 345, prefix.string(), 155);
-
- paxHeader[156] = 'x'; // mark it as a pax extended header
-
- // [ 124 : 12 ] size of pax extended header data
- memset(paxHeader + 124, 0, 12);
- snprintf(paxHeader + 124, 12, "%011o", p - paxData);
-
- // Checksum and write the pax block header
- calc_tar_checksum(paxHeader);
- send_tarfile_chunk(writer, paxHeader, 512);
-
- // Now write the pax data itself
- int paxblocks = (paxLen + 511) / 512;
- send_tarfile_chunk(writer, paxData, 512 * paxblocks);
- }
-
- // Checksum and write the 512-byte ustar file header block to the output
- calc_tar_checksum(buf);
- send_tarfile_chunk(writer, buf, 512);
-
- // Now write the file data itself, for real files. We honor tar's convention that
- // only full 512-byte blocks are sent to write().
- if (!isdir) {
- off64_t toWrite = s.st_size;
- while (toWrite > 0) {
- size_t toRead = (toWrite < BUFSIZE) ? toWrite : BUFSIZE;
- ssize_t nRead = read(fd, buf, toRead);
- if (nRead < 0) {
- err = errno;
- ALOGE("Unable to read file [%s], err=%d (%s)", filepath.string(),
- err, strerror(err));
- break;
- } else if (nRead == 0) {
- ALOGE("EOF but expect %lld more bytes in [%s]", (long long) toWrite,
- filepath.string());
- err = EIO;
- break;
- }
-
- // At EOF we might have a short block; NUL-pad that to a 512-byte multiple. This
- // depends on the OS guarantee that for ordinary files, read() will never return
- // less than the number of bytes requested.
- ssize_t partial = (nRead+512) % 512;
- if (partial > 0) {
- ssize_t remainder = 512 - partial;
- memset(buf + nRead, 0, remainder);
- nRead += remainder;
- }
- send_tarfile_chunk(writer, buf, nRead);
- toWrite -= nRead;
- }
- }
-
-cleanup:
- delete [] buf;
-done:
- close(fd);
- return err;
-}
-// end tarfile
-
-
-
-#define RESTORE_BUF_SIZE (8*1024)
-
-RestoreHelperBase::RestoreHelperBase()
-{
- m_buf = malloc(RESTORE_BUF_SIZE);
- m_loggedUnknownMetadata = false;
-}
-
-RestoreHelperBase::~RestoreHelperBase()
-{
- free(m_buf);
-}
-
-status_t
-RestoreHelperBase::WriteFile(const String8& filename, BackupDataReader* in)
-{
- ssize_t err;
- size_t dataSize;
- String8 key;
- int fd;
- void* buf = m_buf;
- ssize_t amt;
- int mode;
- int crc;
- struct stat st;
- FileRec r;
-
- err = in->ReadEntityHeader(&key, &dataSize);
- if (err != NO_ERROR) {
- return err;
- }
-
- // Get the metadata block off the head of the file entity and use that to
- // set up the output file
- file_metadata_v1 metadata;
- amt = in->ReadEntityData(&metadata, sizeof(metadata));
- if (amt != sizeof(metadata)) {
- ALOGW("Could not read metadata for %s -- %ld / %s", filename.string(),
- (long)amt, strerror(errno));
- return EIO;
- }
- metadata.version = fromlel(metadata.version);
- metadata.mode = fromlel(metadata.mode);
- if (metadata.version > CURRENT_METADATA_VERSION) {
- if (!m_loggedUnknownMetadata) {
- m_loggedUnknownMetadata = true;
- ALOGW("Restoring file with unsupported metadata version %d (currently %d)",
- metadata.version, CURRENT_METADATA_VERSION);
- }
- }
- mode = metadata.mode;
-
- // Write the file and compute the crc
- crc = crc32(0L, Z_NULL, 0);
- fd = open(filename.string(), O_CREAT|O_RDWR|O_TRUNC, mode);
- if (fd == -1) {
- ALOGW("Could not open file %s -- %s", filename.string(), strerror(errno));
- return errno;
- }
-
- while ((amt = in->ReadEntityData(buf, RESTORE_BUF_SIZE)) > 0) {
- err = write(fd, buf, amt);
- if (err != amt) {
- close(fd);
- ALOGW("Error '%s' writing '%s'", strerror(errno), filename.string());
- return errno;
- }
- crc = crc32(crc, (Bytef*)buf, amt);
- }
-
- close(fd);
-
- // Record for the snapshot
- err = stat(filename.string(), &st);
- if (err != 0) {
- ALOGW("Error stating file that we just created %s", filename.string());
- return errno;
- }
-
- r.file = filename;
- r.deleted = false;
- r.s.modTime_sec = st.st_mtime;
- r.s.modTime_nsec = 0; // workaround sim breakage
- //r.s.modTime_nsec = st.st_mtime_nsec;
- r.s.mode = st.st_mode;
- r.s.size = st.st_size;
- r.s.crc32 = crc;
-
- m_files.add(key, r);
-
- return NO_ERROR;
-}
-
-status_t
-RestoreHelperBase::WriteSnapshot(int fd)
-{
- return write_snapshot_file(fd, m_files);;
-}
-
-#if TEST_BACKUP_HELPERS
-
-#define SCRATCH_DIR "/data/backup_helper_test/"
-
-static int
-write_text_file(const char* path, const char* data)
-{
- int amt;
- int fd;
- int len;
-
- fd = creat(path, 0666);
- if (fd == -1) {
- fprintf(stderr, "creat %s failed\n", path);
- return errno;
- }
-
- len = strlen(data);
- amt = write(fd, data, len);
- if (amt != len) {
- fprintf(stderr, "error (%s) writing to file %s\n", strerror(errno), path);
- return errno;
- }
-
- close(fd);
-
- return 0;
-}
-
-static int
-compare_file(const char* path, const unsigned char* data, int len)
-{
- int fd;
- int amt;
-
- fd = open(path, O_RDONLY);
- if (fd == -1) {
- fprintf(stderr, "compare_file error (%s) opening %s\n", strerror(errno), path);
- return errno;
- }
-
- unsigned char* contents = (unsigned char*)malloc(len);
- if (contents == NULL) {
- fprintf(stderr, "malloc(%d) failed\n", len);
- return ENOMEM;
- }
-
- bool sizesMatch = true;
- amt = lseek(fd, 0, SEEK_END);
- if (amt != len) {
- fprintf(stderr, "compare_file file length should be %d, was %d\n", len, amt);
- sizesMatch = false;
- }
- lseek(fd, 0, SEEK_SET);
-
- int readLen = amt < len ? amt : len;
- amt = read(fd, contents, readLen);
- if (amt != readLen) {
- fprintf(stderr, "compare_file read expected %d bytes but got %d\n", len, amt);
- }
-
- bool contentsMatch = true;
- for (int i=0; i<readLen; i++) {
- if (data[i] != contents[i]) {
- if (contentsMatch) {
- fprintf(stderr, "compare_file contents are different: (index, expected, actual)\n");
- contentsMatch = false;
- }
- fprintf(stderr, " [%-2d] %02x %02x\n", i, data[i], contents[i]);
- }
- }
-
- free(contents);
- return contentsMatch && sizesMatch ? 0 : 1;
-}
-
-int
-backup_helper_test_empty()
-{
- int err;
- int fd;
- KeyedVector<String8,FileRec> snapshot;
- const char* filename = SCRATCH_DIR "backup_helper_test_empty.snap";
-
- system("rm -r " SCRATCH_DIR);
- mkdir(SCRATCH_DIR, 0777);
-
- // write
- fd = creat(filename, 0666);
- if (fd == -1) {
- fprintf(stderr, "error creating %s\n", filename);
- return 1;
- }
-
- err = write_snapshot_file(fd, snapshot);
-
- close(fd);
-
- if (err != 0) {
- fprintf(stderr, "write_snapshot_file reported error %d (%s)\n", err, strerror(err));
- return err;
- }
-
- static const unsigned char correct_data[] = {
- 0x53, 0x6e, 0x61, 0x70, 0x00, 0x00, 0x00, 0x00,
- 0x46, 0x69, 0x6c, 0x65, 0x10, 0x00, 0x00, 0x00
- };
-
- err = compare_file(filename, correct_data, sizeof(correct_data));
- if (err != 0) {
- return err;
- }
-
- // read
- fd = open(filename, O_RDONLY);
- if (fd == -1) {
- fprintf(stderr, "error opening for read %s\n", filename);
- return 1;
- }
-
- KeyedVector<String8,FileState> readSnapshot;
- err = read_snapshot_file(fd, &readSnapshot);
- if (err != 0) {
- fprintf(stderr, "read_snapshot_file failed %d\n", err);
- return err;
- }
-
- if (readSnapshot.size() != 0) {
- fprintf(stderr, "readSnapshot should be length 0\n");
- return 1;
- }
-
- return 0;
-}
-
-int
-backup_helper_test_four()
-{
- int err;
- int fd;
- KeyedVector<String8,FileRec> snapshot;
- const char* filename = SCRATCH_DIR "backup_helper_test_four.snap";
-
- system("rm -r " SCRATCH_DIR);
- mkdir(SCRATCH_DIR, 0777);
-
- // write
- fd = creat(filename, 0666);
- if (fd == -1) {
- fprintf(stderr, "error opening %s\n", filename);
- return 1;
- }
-
- String8 filenames[4];
- FileState states[4];
- FileRec r;
- r.deleted = false;
-
- states[0].modTime_sec = 0xfedcba98;
- states[0].modTime_nsec = 0xdeadbeef;
- states[0].mode = 0777; // decimal 511, hex 0x000001ff
- states[0].size = 0xababbcbc;
- states[0].crc32 = 0x12345678;
- states[0].nameLen = -12;
- r.s = states[0];
- filenames[0] = String8("bytes_of_padding");
- snapshot.add(filenames[0], r);
-
- states[1].modTime_sec = 0x93400031;
- states[1].modTime_nsec = 0xdeadbeef;
- states[1].mode = 0666; // decimal 438, hex 0x000001b6
- states[1].size = 0x88557766;
- states[1].crc32 = 0x22334422;
- states[1].nameLen = -1;
- r.s = states[1];
- filenames[1] = String8("bytes_of_padding3");
- snapshot.add(filenames[1], r);
-
- states[2].modTime_sec = 0x33221144;
- states[2].modTime_nsec = 0xdeadbeef;
- states[2].mode = 0744; // decimal 484, hex 0x000001e4
- states[2].size = 0x11223344;
- states[2].crc32 = 0x01122334;
- states[2].nameLen = 0;
- r.s = states[2];
- filenames[2] = String8("bytes_of_padding_2");
- snapshot.add(filenames[2], r);
-
- states[3].modTime_sec = 0x33221144;
- states[3].modTime_nsec = 0xdeadbeef;
- states[3].mode = 0755; // decimal 493, hex 0x000001ed
- states[3].size = 0x11223344;
- states[3].crc32 = 0x01122334;
- states[3].nameLen = 0;
- r.s = states[3];
- filenames[3] = String8("bytes_of_padding__1");
- snapshot.add(filenames[3], r);
-
- err = write_snapshot_file(fd, snapshot);
-
- close(fd);
-
- if (err != 0) {
- fprintf(stderr, "write_snapshot_file reported error %d (%s)\n", err, strerror(err));
- return err;
- }
-
- static const unsigned char correct_data[] = {
- // header
- 0x53, 0x6e, 0x61, 0x70, 0x04, 0x00, 0x00, 0x00,
- 0x46, 0x69, 0x6c, 0x65, 0xbc, 0x00, 0x00, 0x00,
-
- // bytes_of_padding
- 0x98, 0xba, 0xdc, 0xfe, 0xef, 0xbe, 0xad, 0xde,
- 0xff, 0x01, 0x00, 0x00, 0xbc, 0xbc, 0xab, 0xab,
- 0x78, 0x56, 0x34, 0x12, 0x10, 0x00, 0x00, 0x00,
- 0x62, 0x79, 0x74, 0x65, 0x73, 0x5f, 0x6f, 0x66,
- 0x5f, 0x70, 0x61, 0x64, 0x64, 0x69, 0x6e, 0x67,
-
- // bytes_of_padding3
- 0x31, 0x00, 0x40, 0x93, 0xef, 0xbe, 0xad, 0xde,
- 0xb6, 0x01, 0x00, 0x00, 0x66, 0x77, 0x55, 0x88,
- 0x22, 0x44, 0x33, 0x22, 0x11, 0x00, 0x00, 0x00,
- 0x62, 0x79, 0x74, 0x65, 0x73, 0x5f, 0x6f, 0x66,
- 0x5f, 0x70, 0x61, 0x64, 0x64, 0x69, 0x6e, 0x67,
- 0x33, 0xab, 0xab, 0xab,
-
- // bytes of padding2
- 0x44, 0x11, 0x22, 0x33, 0xef, 0xbe, 0xad, 0xde,
- 0xe4, 0x01, 0x00, 0x00, 0x44, 0x33, 0x22, 0x11,
- 0x34, 0x23, 0x12, 0x01, 0x12, 0x00, 0x00, 0x00,
- 0x62, 0x79, 0x74, 0x65, 0x73, 0x5f, 0x6f, 0x66,
- 0x5f, 0x70, 0x61, 0x64, 0x64, 0x69, 0x6e, 0x67,
- 0x5f, 0x32, 0xab, 0xab,
-
- // bytes of padding3
- 0x44, 0x11, 0x22, 0x33, 0xef, 0xbe, 0xad, 0xde,
- 0xed, 0x01, 0x00, 0x00, 0x44, 0x33, 0x22, 0x11,
- 0x34, 0x23, 0x12, 0x01, 0x13, 0x00, 0x00, 0x00,
- 0x62, 0x79, 0x74, 0x65, 0x73, 0x5f, 0x6f, 0x66,
- 0x5f, 0x70, 0x61, 0x64, 0x64, 0x69, 0x6e, 0x67,
- 0x5f, 0x5f, 0x31, 0xab
- };
-
- err = compare_file(filename, correct_data, sizeof(correct_data));
- if (err != 0) {
- return err;
- }
-
- // read
- fd = open(filename, O_RDONLY);
- if (fd == -1) {
- fprintf(stderr, "error opening for read %s\n", filename);
- return 1;
- }
-
-
- KeyedVector<String8,FileState> readSnapshot;
- err = read_snapshot_file(fd, &readSnapshot);
- if (err != 0) {
- fprintf(stderr, "read_snapshot_file failed %d\n", err);
- return err;
- }
-
- if (readSnapshot.size() != 4) {
- fprintf(stderr, "readSnapshot should be length 4 is %d\n", readSnapshot.size());
- return 1;
- }
-
- bool matched = true;
- for (size_t i=0; i<readSnapshot.size(); i++) {
- const String8& name = readSnapshot.keyAt(i);
- const FileState state = readSnapshot.valueAt(i);
-
- if (name != filenames[i] || states[i].modTime_sec != state.modTime_sec
- || states[i].modTime_nsec != state.modTime_nsec || states[i].mode != state.mode
- || states[i].size != state.size || states[i].crc32 != states[i].crc32) {
- fprintf(stderr, "state %d expected={%d/%d, 0x%08x, %04o, 0x%08x, %3d} '%s'\n"
- " actual={%d/%d, 0x%08x, %04o, 0x%08x, %3d} '%s'\n", i,
- states[i].modTime_sec, states[i].modTime_nsec, states[i].mode, states[i].size,
- states[i].crc32, name.length(), filenames[i].string(),
- state.modTime_sec, state.modTime_nsec, state.mode, state.size, state.crc32,
- state.nameLen, name.string());
- matched = false;
- }
- }
-
- return matched ? 0 : 1;
-}
-
-// hexdump -v -e '" " 8/1 " 0x%02x," "\n"' data_writer.data
-const unsigned char DATA_GOLDEN_FILE[] = {
- 0x44, 0x61, 0x74, 0x61, 0x0b, 0x00, 0x00, 0x00,
- 0x0c, 0x00, 0x00, 0x00, 0x6e, 0x6f, 0x5f, 0x70,
- 0x61, 0x64, 0x64, 0x69, 0x6e, 0x67, 0x5f, 0x00,
- 0x6e, 0x6f, 0x5f, 0x70, 0x61, 0x64, 0x64, 0x69,
- 0x6e, 0x67, 0x5f, 0x00, 0x44, 0x61, 0x74, 0x61,
- 0x0c, 0x00, 0x00, 0x00, 0x0d, 0x00, 0x00, 0x00,
- 0x70, 0x61, 0x64, 0x64, 0x65, 0x64, 0x5f, 0x74,
- 0x6f, 0x5f, 0x5f, 0x33, 0x00, 0xbc, 0xbc, 0xbc,
- 0x70, 0x61, 0x64, 0x64, 0x65, 0x64, 0x5f, 0x74,
- 0x6f, 0x5f, 0x5f, 0x33, 0x00, 0xbc, 0xbc, 0xbc,
- 0x44, 0x61, 0x74, 0x61, 0x0d, 0x00, 0x00, 0x00,
- 0x0e, 0x00, 0x00, 0x00, 0x70, 0x61, 0x64, 0x64,
- 0x65, 0x64, 0x5f, 0x74, 0x6f, 0x5f, 0x32, 0x5f,
- 0x5f, 0x00, 0xbc, 0xbc, 0x70, 0x61, 0x64, 0x64,
- 0x65, 0x64, 0x5f, 0x74, 0x6f, 0x5f, 0x32, 0x5f,
- 0x5f, 0x00, 0xbc, 0xbc, 0x44, 0x61, 0x74, 0x61,
- 0x0a, 0x00, 0x00, 0x00, 0x0b, 0x00, 0x00, 0x00,
- 0x70, 0x61, 0x64, 0x64, 0x65, 0x64, 0x5f, 0x74,
- 0x6f, 0x31, 0x00, 0xbc, 0x70, 0x61, 0x64, 0x64,
- 0x65, 0x64, 0x5f, 0x74, 0x6f, 0x31, 0x00
-
-};
-const int DATA_GOLDEN_FILE_SIZE = sizeof(DATA_GOLDEN_FILE);
-
-static int
-test_write_header_and_entity(BackupDataWriter& writer, const char* str)
-{
- int err;
- String8 text(str);
-
- err = writer.WriteEntityHeader(text, text.length()+1);
- if (err != 0) {
- fprintf(stderr, "WriteEntityHeader failed with %s\n", strerror(err));
- return err;
- }
-
- err = writer.WriteEntityData(text.string(), text.length()+1);
- if (err != 0) {
- fprintf(stderr, "write failed for data '%s'\n", text.string());
- return errno;
- }
-
- return err;
-}
-
-int
-backup_helper_test_data_writer()
-{
- int err;
- int fd;
- const char* filename = SCRATCH_DIR "data_writer.data";
-
- system("rm -r " SCRATCH_DIR);
- mkdir(SCRATCH_DIR, 0777);
- mkdir(SCRATCH_DIR "data", 0777);
-
- fd = creat(filename, 0666);
- if (fd == -1) {
- fprintf(stderr, "error creating: %s\n", strerror(errno));
- return errno;
- }
-
- BackupDataWriter writer(fd);
-
- err = 0;
- err |= test_write_header_and_entity(writer, "no_padding_");
- err |= test_write_header_and_entity(writer, "padded_to__3");
- err |= test_write_header_and_entity(writer, "padded_to_2__");
- err |= test_write_header_and_entity(writer, "padded_to1");
-
- close(fd);
-
- err = compare_file(filename, DATA_GOLDEN_FILE, DATA_GOLDEN_FILE_SIZE);
- if (err != 0) {
- return err;
- }
-
- return err;
-}
-
-int
-test_read_header_and_entity(BackupDataReader& reader, const char* str)
-{
- int err;
- int bufSize = strlen(str)+1;
- char* buf = (char*)malloc(bufSize);
- String8 string;
- int cookie = 0x11111111;
- size_t actualSize;
- bool done;
- int type;
- ssize_t nRead;
-
- // printf("\n\n---------- test_read_header_and_entity -- %s\n\n", str);
-
- err = reader.ReadNextHeader(&done, &type);
- if (done) {
- fprintf(stderr, "should not be done yet\n");
- goto finished;
- }
- if (err != 0) {
- fprintf(stderr, "ReadNextHeader (for app header) failed with %s\n", strerror(err));
- goto finished;
- }
- if (type != BACKUP_HEADER_ENTITY_V1) {
- err = EINVAL;
- fprintf(stderr, "type=0x%08x expected 0x%08x\n", type, BACKUP_HEADER_ENTITY_V1);
- }
-
- err = reader.ReadEntityHeader(&string, &actualSize);
- if (err != 0) {
- fprintf(stderr, "ReadEntityHeader failed with %s\n", strerror(err));
- goto finished;
- }
- if (string != str) {
- fprintf(stderr, "ReadEntityHeader expected key '%s' got '%s'\n", str, string.string());
- err = EINVAL;
- goto finished;
- }
- if ((int)actualSize != bufSize) {
- fprintf(stderr, "ReadEntityHeader expected dataSize 0x%08x got 0x%08x\n", bufSize,
- actualSize);
- err = EINVAL;
- goto finished;
- }
-
- nRead = reader.ReadEntityData(buf, bufSize);
- if (nRead < 0) {
- err = reader.Status();
- fprintf(stderr, "ReadEntityData failed with %s\n", strerror(err));
- goto finished;
- }
-
- if (0 != memcmp(buf, str, bufSize)) {
- fprintf(stderr, "ReadEntityData expected '%s' but got something starting with "
- "%02x %02x %02x %02x '%c%c%c%c'\n", str, buf[0], buf[1], buf[2], buf[3],
- buf[0], buf[1], buf[2], buf[3]);
- err = EINVAL;
- goto finished;
- }
-
- // The next read will confirm whether it got the right amount of data.
-
-finished:
- if (err != NO_ERROR) {
- fprintf(stderr, "test_read_header_and_entity failed with %s\n", strerror(err));
- }
- free(buf);
- return err;
-}
-
-int
-backup_helper_test_data_reader()
-{
- int err;
- int fd;
- const char* filename = SCRATCH_DIR "data_reader.data";
-
- system("rm -r " SCRATCH_DIR);
- mkdir(SCRATCH_DIR, 0777);
- mkdir(SCRATCH_DIR "data", 0777);
-
- fd = creat(filename, 0666);
- if (fd == -1) {
- fprintf(stderr, "error creating: %s\n", strerror(errno));
- return errno;
- }
-
- err = write(fd, DATA_GOLDEN_FILE, DATA_GOLDEN_FILE_SIZE);
- if (err != DATA_GOLDEN_FILE_SIZE) {
- fprintf(stderr, "Error \"%s\" writing golden file %s\n", strerror(errno), filename);
- return errno;
- }
-
- close(fd);
-
- fd = open(filename, O_RDONLY);
- if (fd == -1) {
- fprintf(stderr, "Error \"%s\" opening golden file %s for read\n", strerror(errno),
- filename);
- return errno;
- }
-
- {
- BackupDataReader reader(fd);
-
- err = 0;
-
- if (err == NO_ERROR) {
- err = test_read_header_and_entity(reader, "no_padding_");
- }
-
- if (err == NO_ERROR) {
- err = test_read_header_and_entity(reader, "padded_to__3");
- }
-
- if (err == NO_ERROR) {
- err = test_read_header_and_entity(reader, "padded_to_2__");
- }
-
- if (err == NO_ERROR) {
- err = test_read_header_and_entity(reader, "padded_to1");
- }
- }
-
- close(fd);
-
- return err;
-}
-
-static int
-get_mod_time(const char* filename, struct timeval times[2])
-{
- int err;
- struct stat64 st;
- err = stat64(filename, &st);
- if (err != 0) {
- fprintf(stderr, "stat '%s' failed: %s\n", filename, strerror(errno));
- return errno;
- }
- times[0].tv_sec = st.st_atime;
- times[1].tv_sec = st.st_mtime;
-
- // If st_atime is a macro then struct stat64 uses struct timespec
- // to store the access and modif time values and typically
- // st_*time_nsec is not defined. In glibc, this is controlled by
- // __USE_MISC.
-#ifdef __USE_MISC
-#if !defined(st_atime) || defined(st_atime_nsec)
-#error "Check if this __USE_MISC conditional is still needed."
-#endif
- times[0].tv_usec = st.st_atim.tv_nsec / 1000;
- times[1].tv_usec = st.st_mtim.tv_nsec / 1000;
-#else
- times[0].tv_usec = st.st_atime_nsec / 1000;
- times[1].tv_usec = st.st_mtime_nsec / 1000;
-#endif
-
- return 0;
-}
-
-int
-backup_helper_test_files()
-{
- int err;
- int oldSnapshotFD;
- int dataStreamFD;
- int newSnapshotFD;
-
- system("rm -r " SCRATCH_DIR);
- mkdir(SCRATCH_DIR, 0777);
- mkdir(SCRATCH_DIR "data", 0777);
-
- write_text_file(SCRATCH_DIR "data/b", "b\nbb\n");
- write_text_file(SCRATCH_DIR "data/c", "c\ncc\n");
- write_text_file(SCRATCH_DIR "data/d", "d\ndd\n");
- write_text_file(SCRATCH_DIR "data/e", "e\nee\n");
- write_text_file(SCRATCH_DIR "data/f", "f\nff\n");
- write_text_file(SCRATCH_DIR "data/h", "h\nhh\n");
-
- char const* files_before[] = {
- SCRATCH_DIR "data/b",
- SCRATCH_DIR "data/c",
- SCRATCH_DIR "data/d",
- SCRATCH_DIR "data/e",
- SCRATCH_DIR "data/f"
- };
-
- char const* keys_before[] = {
- "data/b",
- "data/c",
- "data/d",
- "data/e",
- "data/f"
- };
-
- dataStreamFD = creat(SCRATCH_DIR "1.data", 0666);
- if (dataStreamFD == -1) {
- fprintf(stderr, "error creating: %s\n", strerror(errno));
- return errno;
- }
-
- newSnapshotFD = creat(SCRATCH_DIR "before.snap", 0666);
- if (newSnapshotFD == -1) {
- fprintf(stderr, "error creating: %s\n", strerror(errno));
- return errno;
- }
-
- {
- BackupDataWriter dataStream(dataStreamFD);
-
- err = back_up_files(-1, &dataStream, newSnapshotFD, files_before, keys_before, 5);
- if (err != 0) {
- return err;
- }
- }
-
- close(dataStreamFD);
- close(newSnapshotFD);
-
- sleep(3);
-
- struct timeval d_times[2];
- struct timeval e_times[2];
-
- err = get_mod_time(SCRATCH_DIR "data/d", d_times);
- err |= get_mod_time(SCRATCH_DIR "data/e", e_times);
- if (err != 0) {
- return err;
- }
-
- write_text_file(SCRATCH_DIR "data/a", "a\naa\n");
- unlink(SCRATCH_DIR "data/c");
- write_text_file(SCRATCH_DIR "data/c", "c\ncc\n");
- write_text_file(SCRATCH_DIR "data/d", "dd\ndd\n");
- utimes(SCRATCH_DIR "data/d", d_times);
- write_text_file(SCRATCH_DIR "data/e", "z\nzz\n");
- utimes(SCRATCH_DIR "data/e", e_times);
- write_text_file(SCRATCH_DIR "data/g", "g\ngg\n");
- unlink(SCRATCH_DIR "data/f");
-
- char const* files_after[] = {
- SCRATCH_DIR "data/a", // added
- SCRATCH_DIR "data/b", // same
- SCRATCH_DIR "data/c", // different mod time
- SCRATCH_DIR "data/d", // different size (same mod time)
- SCRATCH_DIR "data/e", // different contents (same mod time, same size)
- SCRATCH_DIR "data/g" // added
- };
-
- char const* keys_after[] = {
- "data/a", // added
- "data/b", // same
- "data/c", // different mod time
- "data/d", // different size (same mod time)
- "data/e", // different contents (same mod time, same size)
- "data/g" // added
- };
-
- oldSnapshotFD = open(SCRATCH_DIR "before.snap", O_RDONLY);
- if (oldSnapshotFD == -1) {
- fprintf(stderr, "error opening: %s\n", strerror(errno));
- return errno;
- }
-
- dataStreamFD = creat(SCRATCH_DIR "2.data", 0666);
- if (dataStreamFD == -1) {
- fprintf(stderr, "error creating: %s\n", strerror(errno));
- return errno;
- }
-
- newSnapshotFD = creat(SCRATCH_DIR "after.snap", 0666);
- if (newSnapshotFD == -1) {
- fprintf(stderr, "error creating: %s\n", strerror(errno));
- return errno;
- }
-
- {
- BackupDataWriter dataStream(dataStreamFD);
-
- err = back_up_files(oldSnapshotFD, &dataStream, newSnapshotFD, files_after, keys_after, 6);
- if (err != 0) {
- return err;
- }
-}
-
- close(oldSnapshotFD);
- close(dataStreamFD);
- close(newSnapshotFD);
-
- return 0;
-}
-
-int
-backup_helper_test_null_base()
-{
- int err;
- int oldSnapshotFD;
- int dataStreamFD;
- int newSnapshotFD;
-
- system("rm -r " SCRATCH_DIR);
- mkdir(SCRATCH_DIR, 0777);
- mkdir(SCRATCH_DIR "data", 0777);
-
- write_text_file(SCRATCH_DIR "data/a", "a\naa\n");
-
- char const* files[] = {
- SCRATCH_DIR "data/a",
- };
-
- char const* keys[] = {
- "a",
- };
-
- dataStreamFD = creat(SCRATCH_DIR "null_base.data", 0666);
- if (dataStreamFD == -1) {
- fprintf(stderr, "error creating: %s\n", strerror(errno));
- return errno;
- }
-
- newSnapshotFD = creat(SCRATCH_DIR "null_base.snap", 0666);
- if (newSnapshotFD == -1) {
- fprintf(stderr, "error creating: %s\n", strerror(errno));
- return errno;
- }
-
- {
- BackupDataWriter dataStream(dataStreamFD);
-
- err = back_up_files(-1, &dataStream, newSnapshotFD, files, keys, 1);
- if (err != 0) {
- return err;
- }
- }
-
- close(dataStreamFD);
- close(newSnapshotFD);
-
- return 0;
-}
-
-int
-backup_helper_test_missing_file()
-{
- int err;
- int oldSnapshotFD;
- int dataStreamFD;
- int newSnapshotFD;
-
- system("rm -r " SCRATCH_DIR);
- mkdir(SCRATCH_DIR, 0777);
- mkdir(SCRATCH_DIR "data", 0777);
-
- write_text_file(SCRATCH_DIR "data/b", "b\nbb\n");
-
- char const* files[] = {
- SCRATCH_DIR "data/a",
- SCRATCH_DIR "data/b",
- SCRATCH_DIR "data/c",
- };
-
- char const* keys[] = {
- "a",
- "b",
- "c",
- };
-
- dataStreamFD = creat(SCRATCH_DIR "null_base.data", 0666);
- if (dataStreamFD == -1) {
- fprintf(stderr, "error creating: %s\n", strerror(errno));
- return errno;
- }
-
- newSnapshotFD = creat(SCRATCH_DIR "null_base.snap", 0666);
- if (newSnapshotFD == -1) {
- fprintf(stderr, "error creating: %s\n", strerror(errno));
- return errno;
- }
-
- {
- BackupDataWriter dataStream(dataStreamFD);
-
- err = back_up_files(-1, &dataStream, newSnapshotFD, files, keys, 1);
- if (err != 0) {
- return err;
- }
- }
-
- close(dataStreamFD);
- close(newSnapshotFD);
-
- return 0;
-}
-
-
-#endif // TEST_BACKUP_HELPERS
-
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-29 06:16:02 +0000