static int FAST_FUNC writeFileToTarball(const char *fileName, struct stat *statbuf,
void *userData, int depth UNUSED_PARAM)
{
struct TarBallInfo *tbInfo = (struct TarBallInfo *) userData;
const char *header_name;
int inputFileFd = -1;
/* Strip leading '/' (must be before memorizing hardlink's name) */
header_name = fileName;
while (header_name[0] == '/') {
static smallint warned;
if (!warned) {
bb_error_msg("removing leading '/' from member names");
warned = 1;
}
header_name++;
}
if (header_name[0] == '\0')
return TRUE;
/* It is against the rules to archive a socket */
if (S_ISSOCK(statbuf->st_mode)) {
bb_error_msg("%s: socket ignored", fileName);
return TRUE;
}
/*
* Check to see if we are dealing with a hard link.
* If so -
* Treat the first occurance of a given dev/inode as a file while
* treating any additional occurances as hard links. This is done
* by adding the file information to the HardLinkInfo linked list.
*/
tbInfo->hlInfo = NULL;
if (statbuf->st_nlink > 1) {
tbInfo->hlInfo = findHardLinkInfo(tbInfo->hlInfoHead, statbuf);
if (tbInfo->hlInfo == NULL)
addHardLinkInfo(&tbInfo->hlInfoHead, statbuf, header_name);
}
/* It is a bad idea to store the archive we are in the process of creating,
* so check the device and inode to be sure that this particular file isn't
* the new tarball */
if (tbInfo->statBuf.st_dev == statbuf->st_dev
&& tbInfo->statBuf.st_ino == statbuf->st_ino
) {
bb_error_msg("%s: file is the archive; skipping", fileName);
return TRUE;
}
if (exclude_file(tbInfo->excludeList, header_name))
return SKIP;
#if !ENABLE_FEATURE_TAR_GNU_EXTENSIONS
if (strlen(header_name) >= NAME_SIZE) {
bb_error_msg("names longer than "NAME_SIZE_STR" chars not supported");
return TRUE;
}
#endif
/* Is this a regular file? */
if (tbInfo->hlInfo == NULL && S_ISREG(statbuf->st_mode)) {
/* open the file we want to archive, and make sure all is well */
inputFileFd = open_or_warn(fileName, O_RDONLY);
if (inputFileFd < 0) {
return FALSE;
}
}
/* Add an entry to the tarball */
if (writeTarHeader(tbInfo, header_name, fileName, statbuf) == FALSE) {
return FALSE;
}
/* If it was a regular file, write out the body */
if (inputFileFd >= 0) {
size_t readSize;
/* Write the file to the archive. */
/* We record size into header first, */
/* and then write out file. If file shrinks in between, */
/* tar will be corrupted. So we don't allow for that. */
/* NB: GNU tar 1.16 warns and pads with zeroes */
/* or even seeks back and updates header */
bb_copyfd_exact_size(inputFileFd, tbInfo->tarFd, statbuf->st_size);
////off_t readSize;
////readSize = bb_copyfd_size(inputFileFd, tbInfo->tarFd, statbuf->st_size);
////if (readSize != statbuf->st_size && readSize >= 0) {
//// bb_error_msg_and_die("short read from %s, aborting", fileName);
////}
/* Check that file did not grow in between? */
/* if (safe_read(inputFileFd, 1) == 1) warn but continue? */
close(inputFileFd);
/* Pad the file up to the tar block size */
/* (a few tricks here in the name of code size) */
readSize = (-(int)statbuf->st_size) & (TAR_BLOCK_SIZE-1);
memset(block_buf, 0, readSize);
xwrite(tbInfo->tarFd, block_buf, readSize);
}
return TRUE;
}
static int writeFileToTarball(const char *fileName, struct stat *statbuf,
void *userData)
{
struct TarBallInfo *tbInfo = (struct TarBallInfo *) userData;
const char *header_name;
/*
** Check to see if we are dealing with a hard link.
** If so -
** Treat the first occurance of a given dev/inode as a file while
** treating any additional occurances as hard links. This is done
** by adding the file information to the HardLinkInfo linked list.
*/
tbInfo->hlInfo = NULL;
if (statbuf->st_nlink > 1) {
tbInfo->hlInfo = findHardLinkInfo(tbInfo->hlInfoHead, statbuf);
if (tbInfo->hlInfo == NULL)
addHardLinkInfo(&tbInfo->hlInfoHead, statbuf, fileName);
}
/* It is against the rules to archive a socket */
if (S_ISSOCK(statbuf->st_mode)) {
bb_error_msg("%s: socket ignored", fileName);
return (TRUE);
}
/* It is a bad idea to store the archive we are in the process of creating,
* so check the device and inode to be sure that this particular file isn't
* the new tarball */
if (tbInfo->statBuf.st_dev == statbuf->st_dev &&
tbInfo->statBuf.st_ino == statbuf->st_ino) {
bb_error_msg("%s: file is the archive; skipping", fileName);
return (TRUE);
}
header_name = fileName;
while (header_name[0] == '/') {
static int alreadyWarned = FALSE;
if (alreadyWarned == FALSE) {
bb_error_msg("Removing leading '/' from member names");
alreadyWarned = TRUE;
}
header_name++;
}
if (strlen(fileName) >= NAME_SIZE) {
bb_error_msg(bb_msg_name_longer_than_foo, NAME_SIZE);
return (TRUE);
}
if (header_name[0] == '\0')
return TRUE;
# ifdef CONFIG_FEATURE_TAR_FROM
if (exclude_file(tbInfo->excludeList, header_name)) {
return SKIP;
}
# endif /* CONFIG_FEATURE_TAR_FROM */
if (writeTarHeader(tbInfo, header_name, fileName, statbuf) == FALSE) {
return (FALSE);
}
/* Now, if the file is a regular file, copy it out to the tarball */
if ((tbInfo->hlInfo == NULL)
&& (S_ISREG(statbuf->st_mode))) {
int inputFileFd;
ssize_t readSize = 0;
/* open the file we want to archive, and make sure all is well */
if ((inputFileFd = open(fileName, O_RDONLY)) < 0) {
bb_perror_msg("%s: Cannot open", fileName);
return (FALSE);
}
/* write the file to the archive */
readSize = bb_copyfd_eof(inputFileFd, tbInfo->tarFd);
/* Pad the file up to the tar block size */
for (; (readSize % TAR_BLOCK_SIZE) != 0; readSize++) {
write(tbInfo->tarFd, "\0", 1);
}
close(inputFileFd);
}
return (TRUE);
}
