static int decompress(char *inbuf, char *outbuf, u64 compress_len,
u64 *decompress_len, int compress)
{
switch (compress) {
case BTRFS_COMPRESS_ZLIB:
return decompress_zlib(inbuf, outbuf, compress_len,
*decompress_len);
case BTRFS_COMPRESS_LZO:
return decompress_lzo((unsigned char *)inbuf, outbuf, compress_len,
decompress_len);
default:
break;
}
fprintf(stderr, "invalid compression type: %d\n", compress);
return -1;
}
static int decompress(struct btrfs_root *root, char *inbuf, char *outbuf,
u64 compress_len, u64 *decompress_len, int compress)
{
switch (compress) {
case BTRFS_COMPRESS_ZLIB:
return decompress_zlib(inbuf, outbuf, compress_len,
*decompress_len);
case BTRFS_COMPRESS_LZO:
return decompress_lzo(root, (unsigned char *)inbuf, outbuf,
compress_len, decompress_len);
default:
break;
}
error("invalid compression type: %d", compress);
return -1;
}
int main(int argc, char *argv[]) {
int fd;
char *buf;
stringer_t *compressed;
stringer_t *uncompressed;
struct stat info;
char filepath[1000], lib[1000], storage[1000];
unsigned long long messagenum;
if (argc != 2 || getenv("MAGMA_LIBRARY") == NULL || getenv("MAGMA_STORAGE") == NULL) {
printf("Usage : testde messagenum\n\nMAGMA_LIBRARY = location magmad.so%s\nMAGMA_STORAGE = location of the storage tree%s\n\n",
getenv("MAGMA_LIBRARY") ? "" : " [missing]", getenv("MAGMA_STORAGE") ? "" : " [missing]");
return 1;
}
printf("\nMagma decompression tester.\n");
if (getenv("MAGMA_LIBRARY") == NULL || snprintf(lib, 1000, "%s", getenv("MAGMA_LIBRARY")) == 0) {
printf ("Please set the MAGMA_LIBRARY environment variable.\n\n");
return 1;
}
// Setup the pointer to the dynamic library.
lavalib = dlopen(lib, RTLD_LOCAL | RTLD_LAZY);
if (lavalib == NULL) {
printf("Could not open the magma library.\n");
printf("%s", dlerror());
return 0;
}
// Load the LZO library symbols.
if (load_symbols_lzo() != 1) {
printf("Could not dynamically load the LZO functions.\n");
dlclose(lavalib);
return 0;
}
if (initialize_lzo() != 1) {
printf("LZO could not init.\n");
return 0;
}
messagenum = strtoull(argv[1], (char **)NULL, 10);
if (messagenum == 0) {
printf("Could not get a valid message number.\n\n");
return 1;
}
if (getenv("MAGMA_STORAGE") == NULL || snprintf(storage, 1000, "%s", getenv("MAGMA_STORAGE")) == 0) {
printf ("Please set the MAGMA_STORAGE environment variable.\n\n");
return 1;
}
sprintf(filepath, "%s/%lli/%lli/%lli/%lli/%lli", storage, \
messagenum / 32768 / 32768 / 32768 / 32768, messagenum / 32768 / 32768 / 32768 , \
messagenum / 32768 / 32768, messagenum / 32768, messagenum);
fd = open(filepath, O_RDONLY);
if (fd < 0) {
printf("Could not create a file descriptor. Does the file %s exist?\n\n", filepath);
return 1;
}
if (fstat(fd, &info) != 0) {
printf("Could figure out how big the file was.\n\n");
return 1;
}
buf = malloc(info.st_size);
if (buf == NULL) {
printf("Could not create a buffer of size %d to hold the file.\n\n", (int)info.st_size);
return 1;
}
if (read(fd, buf, (int)info.st_size) <= 0) {
printf("Could not read the file.\n\n");
return 1;
}
uncompressed = decompress_lzo(buf + 4);
if (uncompressed != NULL) {
replace_st_ns_ns(&uncompressed, "\r\n", "\n");
printf("\n\n----------------------------- START OF MESSAGE -----------------------------\n%.*s", (int)used_st(uncompressed), data_st(uncompressed));
if (*(data_st(uncompressed) + used_st(uncompressed) - 1) != '\n') {
printf("\n----------------------------- END OF MESSAGE -----------------------------\n\n" \
"Was able to decompress %d bytes into %i bytes.\n\n", (int)info.st_size, (int)used_st(uncompressed));
}
else {
printf("----------------------------- END OF MESSAGE -----------------------------\n\n" \
"Was able to decompress %d bytes into %i bytes.\n\n", (int)info.st_size, (int)used_st(uncompressed));
}
}
else {
printf("Unable to decompress the message.\n\n");
return 1;
}
return 0;
}