static void *
extractBuf(const char * path, Zip *zip)
{
Zip::Stream s;
if (!zip->GetStream(path, &s))
return NULL;
void * buf = malloc(s.GetUncompressedSize());
if (buf == (void *)-1) {
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Couldn't alloc decompression buffer for %s", path);
return NULL;
}
if (s.GetType() == Zip::Stream::DEFLATE)
extractLib(s, buf);
else
memcpy(buf, s.GetBuffer(), s.GetUncompressedSize());
return buf;
}
static void *
extractBuf(const char * path, Zip *zip)
{
Zip::Stream s;
if (!zip->GetStream(path, &s))
return NULL;
// allocate space for a trailing null byte
void * buf = malloc(s.GetUncompressedSize() + 1);
if (buf == (void *)-1) {
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Couldn't alloc decompression buffer for %s", path);
return NULL;
}
if (s.GetType() == Zip::Stream::DEFLATE)
extractLib(s, buf);
else
memcpy(buf, s.GetBuffer(), s.GetUncompressedSize());
// null terminate it
((unsigned char*) buf)[s.GetUncompressedSize()] = 0;
return buf;
}
static void * mozload(const char * path, Zip *zip)
{
#ifdef DEBUG
struct timeval t0, t1;
gettimeofday(&t0, 0);
#endif
void *handle;
Zip::Stream s;
if (!zip->GetStream(path, &s))
return NULL;
if (extractLibs) {
char fullpath[PATH_MAX];
snprintf(fullpath, PATH_MAX, "%s/%s", getenv("MOZ_LINKER_CACHE"), path);
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "resolved %s to %s", path, fullpath);
extractFile(fullpath, s);
handle = __wrap_dlopen(fullpath, RTLD_LAZY);
if (!handle)
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Couldn't load %s because %s", fullpath, __wrap_dlerror());
#ifdef DEBUG
gettimeofday(&t1, 0);
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "%s: spent %d", path,
(((long long)t1.tv_sec * 1000000LL) +
(long long)t1.tv_usec) -
(((long long)t0.tv_sec * 1000000LL) +
(long long)t0.tv_usec));
#endif
return handle;
}
int fd;
void * buf = NULL;
uint32_t lib_size = s.GetUncompressedSize();
int cache_fd = 0;
if (s.GetType() == Zip::Stream::DEFLATE) {
cache_fd = lookupLibCacheFd(path);
fd = cache_fd;
if (fd < 0)
fd = createAshmem(lib_size, path);
#ifdef DEBUG
else
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Loading %s from cache", path);
#endif
if (fd < 0) {
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Couldn't open " ASHMEM_NAME_DEF ", Error %d, %s, bailing out", errno, strerror(errno));
return NULL;
}
buf = mmap(NULL, lib_size,
PROT_READ | PROT_WRITE,
MAP_SHARED, fd, 0);
if (buf == (void *)-1) {
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Couldn't mmap decompression buffer");
close(fd);
return NULL;
}
if (cache_fd < 0) {
extractLib(s, buf);
#ifdef ANDROID_ARM_LINKER
/* We just extracted data that is going to be executed in the future.
* We thus need to ensure Instruction and Data cache coherency. */
cacheflush((unsigned) buf, (unsigned) buf + s.GetUncompressedSize(), 0);
#endif
addLibCacheFd(path, fd, lib_size, buf);
}
// preload libxul, to avoid slowly demand-paging it
if (!strcmp(path, "libxul.so"))
madvise(buf, s.GetUncompressedSize(), MADV_WILLNEED);
}
#ifdef DEBUG
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Loading %s with len %d (0x%08x)", path, lib_size, lib_size);
#endif
handle = moz_mapped_dlopen(path, RTLD_LAZY, fd, buf,
lib_size, 0);
if (!handle)
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Couldn't load %s because %s", path, __wrap_dlerror());
if (buf)
munmap(buf, lib_size);
#ifdef DEBUG
gettimeofday(&t1, 0);
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "%s: spent %d", path, (((long long)t1.tv_sec * 1000000LL) + (long long)t1.tv_usec) -
(((long long)t0.tv_sec * 1000000LL) + (long long)t0.tv_usec));
#endif
return handle;
}
static void
extractFile(const char * path, Zip::Stream &s)
{
uint32_t size = s.GetUncompressedSize();
struct stat status;
if (!stat(path, &status) &&
status.st_size == size &&
apk_mtime < status.st_mtime)
return;
int fd = open(path, O_CREAT | O_NOATIME | O_TRUNC | O_RDWR, S_IRWXU);
if (fd == -1) {
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Couldn't open %s to decompress library", path);
return;
}
if (ftruncate(fd, size) == -1) {
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Couldn't ftruncate %s to decompress library", path);
close(fd);
return;
}
void * buf = mmap(NULL, size, PROT_READ | PROT_WRITE,
MAP_SHARED, fd, 0);
if (buf == (void *)-1) {
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "Couldn't mmap decompression buffer");
close(fd);
return;
}
z_stream strm = {
next_in: (Bytef *)s.GetBuffer(),
avail_in: s.GetSize(),
total_in: 0,
next_out: (Bytef *)buf,
avail_out: size,
total_out: 0
};
int ret;
ret = inflateInit2(&strm, -MAX_WBITS);
if (ret != Z_OK)
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "inflateInit failed: %s", strm.msg);
if (inflate(&strm, Z_FINISH) != Z_STREAM_END)
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "inflate failed: %s", strm.msg);
if (strm.total_out != size)
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "extracted %d, expected %d!", strm.total_out, size);
ret = inflateEnd(&strm);
if (ret != Z_OK)
__android_log_print(ANDROID_LOG_ERROR, "GeckoLibLoad", "inflateEnd failed: %s", strm.msg);
close(fd);
#ifdef ANDROID_ARM_LINKER
/* We just extracted data that is going to be executed in the future.
* We thus need to ensure Instruction and Data cache coherency. */
cacheflush((unsigned) buf, (unsigned) buf + size, 0);
#endif
munmap(buf, size);
}