/* Extract the information from the entry, serialize and send it out.
* Return 0 on success, -1 on error.
*/
static int
send_dirent_info (TSK_FS_FILE *fsfile, const char *path)
{
XDR xdr;
int ret = 0;
size_t len = 0;
struct guestfs_int_tsk_dirent dirent;
CLEANUP_FREE char *buf = NULL, *fname = NULL;
/* Set dirent fields */
memset (&dirent, 0, sizeof dirent);
/* Build the full relative path of the entry */
ret = asprintf (&fname, "%s%s", path, fsfile->name->name);
if (ret < 0) {
perror ("asprintf");
return -1;
}
dirent.tsk_inode = fsfile->name->meta_addr;
dirent.tsk_type = file_type (fsfile);
dirent.tsk_name = fname;
dirent.tsk_flags = file_flags (fsfile);
file_metadata (fsfile->meta, &dirent);
/* Serialize tsk_dirent struct. */
buf = malloc (GUESTFS_MAX_CHUNK_SIZE);
if (buf == NULL) {
perror ("malloc");
return -1;
}
xdrmem_create (&xdr, buf, GUESTFS_MAX_CHUNK_SIZE, XDR_ENCODE);
ret = xdr_guestfs_int_tsk_dirent (&xdr, &dirent);
if (ret == 0) {
perror ("xdr_guestfs_int_tsk_dirent");
return -1;
}
len = xdr_getpos (&xdr);
xdr_destroy (&xdr);
/* Send serialised tsk_dirent out. */
return send_file_write (buf, len);
}
/* Has one FileOut parameter. */
int
do_find0 (const char *dir)
{
struct stat statbuf;
int r;
FILE *fp;
char *cmd;
char *sysrootdir;
size_t sysrootdirlen, len;
char str[GUESTFS_MAX_CHUNK_SIZE];
sysrootdir = sysroot_path (dir);
if (!sysrootdir) {
reply_with_perror ("malloc");
return -1;
}
r = stat (sysrootdir, &statbuf);
if (r == -1) {
reply_with_perror ("%s", dir);
free (sysrootdir);
return -1;
}
if (!S_ISDIR (statbuf.st_mode)) {
reply_with_error ("%s: not a directory", dir);
free (sysrootdir);
return -1;
}
sysrootdirlen = strlen (sysrootdir);
if (asprintf_nowarn (&cmd, "%s %Q -print0", str_find, sysrootdir) == -1) {
reply_with_perror ("asprintf");
free (sysrootdir);
return -1;
}
free (sysrootdir);
if (verbose)
fprintf (stderr, "%s\n", cmd);
fp = popen (cmd, "r");
if (fp == NULL) {
reply_with_perror ("%s", cmd);
free (cmd);
return -1;
}
free (cmd);
/* Now we must send the reply message, before the file contents. After
* this there is no opportunity in the protocol to send any error
* message back. Instead we can only cancel the transfer.
*/
reply (NULL, NULL);
while ((r = input_to_nul (fp, str, GUESTFS_MAX_CHUNK_SIZE)) > 0) {
len = strlen (str);
if (len <= sysrootdirlen)
continue;
/* Remove the directory part of the path before sending it. */
if (send_file_write (str + sysrootdirlen, r - sysrootdirlen) < 0) {
pclose (fp);
return -1;
}
}
if (ferror (fp)) {
perror (dir);
send_file_end (1); /* Cancel. */
pclose (fp);
return -1;
}
if (pclose (fp) != 0) {
perror (dir);
send_file_end (1); /* Cancel. */
return -1;
}
if (send_file_end (0)) /* Normal end of file. */
return -1;
return 0;
}
/* Has one FileOut parameter. */
int
do_checksums_out (const char *csumtype, const char *dir)
{
struct stat statbuf;
int r;
const char *program = program_of_csum (csumtype);
if (program == NULL)
return -1;
CLEANUP_FREE char *sysrootdir = sysroot_path (dir);
if (!sysrootdir) {
reply_with_perror ("malloc");
return -1;
}
r = stat (sysrootdir, &statbuf);
if (r == -1) {
reply_with_perror ("%s", dir);
return -1;
}
if (!S_ISDIR (statbuf.st_mode)) {
reply_with_error ("%s: not a directory", dir);
return -1;
}
CLEANUP_FREE char *cmd = NULL;
if (asprintf_nowarn (&cmd, "cd %Q && %s -type f -print0 | %s -0 %s",
sysrootdir, str_find, str_xargs, program) == -1) {
reply_with_perror ("asprintf");
return -1;
}
if (verbose)
fprintf (stderr, "%s\n", cmd);
FILE *fp = popen (cmd, "r");
if (fp == NULL) {
reply_with_perror ("%s", cmd);
return -1;
}
/* Now we must send the reply message, before the file contents. After
* this there is no opportunity in the protocol to send any error
* message back. Instead we can only cancel the transfer.
*/
reply (NULL, NULL);
char str[GUESTFS_MAX_CHUNK_SIZE];
while ((r = fread (str, 1, GUESTFS_MAX_CHUNK_SIZE, fp)) > 0) {
if (send_file_write (str, r) < 0) {
pclose (fp);
return -1;
}
}
if (ferror (fp)) {
fprintf (stderr, "fread: %s: %m\n", dir);
send_file_end (1); /* Cancel. */
pclose (fp);
return -1;
}
if (pclose (fp) != 0) {
fprintf (stderr, "pclose: %s: %m\n", dir);
send_file_end (1); /* Cancel. */
return -1;
}
if (send_file_end (0)) /* Normal end of file. */
return -1;
return 0;
}
/* Takes optional arguments, consult optargs_bitmask. */
int
do_tar_out (const char *dir, const char *compress, int numericowner,
char *const *excludes)
{
CLEANUP_FREE char *buf = NULL;
struct stat statbuf;
const char *filter;
int r;
FILE *fp;
CLEANUP_FREE char *excludes_args = NULL;
CLEANUP_FREE char *cmd = NULL;
char buffer[GUESTFS_MAX_CHUNK_SIZE];
if ((optargs_bitmask & GUESTFS_TAR_OUT_COMPRESS_BITMASK)) {
if (STREQ (compress, "compress"))
filter = " --compress";
else if (STREQ (compress, "gzip"))
filter = " --gzip";
else if (STREQ (compress, "bzip2"))
filter = " --bzip2";
else if (STREQ (compress, "xz"))
filter = " --xz";
else if (STREQ (compress, "lzop"))
filter = " --lzop";
else {
reply_with_error ("unknown compression type: %s", compress);
return -1;
}
} else
filter = "";
if (!(optargs_bitmask & GUESTFS_TAR_OUT_NUMERICOWNER_BITMASK))
numericowner = 0;
if ((optargs_bitmask & GUESTFS_TAR_OUT_EXCLUDES_BITMASK)) {
excludes_args = make_excludes_args (excludes);
if (!excludes_args)
return -1;
} else {
excludes_args = strdup ("");
if (excludes_args == NULL) {
reply_with_perror ("strdup");
return -1;
}
}
/* Check the filename exists and is a directory (RHBZ#908322). */
buf = sysroot_path (dir);
if (buf == NULL) {
reply_with_perror ("malloc");
return -1;
}
if (stat (buf, &statbuf) == -1) {
reply_with_perror ("stat: %s", dir);
return -1;
}
if (! S_ISDIR (statbuf.st_mode)) {
reply_with_error ("%s: not a directory", dir);
return -1;
}
/* "tar -C /sysroot%s -cf - ." but we have to quote the dir. */
if (asprintf_nowarn (&cmd, "%s -C %s%s%s%s -cf - .",
str_tar,
buf, filter,
numericowner ? " --numeric-owner" : "",
excludes_args) == -1) {
reply_with_perror ("asprintf");
return -1;
}
if (verbose)
fprintf (stderr, "%s\n", cmd);
fp = popen (cmd, "r");
if (fp == NULL) {
reply_with_perror ("%s", cmd);
return -1;
}
/* Now we must send the reply message, before the file contents. After
* this there is no opportunity in the protocol to send any error
* message back. Instead we can only cancel the transfer.
*/
reply (NULL, NULL);
while ((r = fread (buffer, 1, sizeof buffer, fp)) > 0) {
if (send_file_write (buffer, r) < 0) {
pclose (fp);
return -1;
}
}
if (ferror (fp)) {
fprintf (stderr, "fread: %s: %m\n", dir);
send_file_end (1); /* Cancel. */
pclose (fp);
return -1;
}
if (pclose (fp) != 0) {
fprintf (stderr, "pclose: %s: %m\n", dir);
send_file_end (1); /* Cancel. */
return -1;
}
if (send_file_end (0)) /* Normal end of file. */
return -1;
return 0;
}
/* Has one FileOut parameter. */
int
do_find0 (const char *dir)
{
struct stat statbuf;
int r;
FILE *fp;
CLEANUP_FREE char *cmd = NULL;
CLEANUP_FREE char *sysrootdir = NULL;
size_t sysrootdirlen;
CLEANUP_FREE char *str = NULL;
str = malloc (GUESTFS_MAX_CHUNK_SIZE);
if (str == NULL) {
reply_with_perror ("malloc");
return -1;
}
sysrootdir = sysroot_path (dir);
if (!sysrootdir) {
reply_with_perror ("malloc");
return -1;
}
r = stat (sysrootdir, &statbuf);
if (r == -1) {
reply_with_perror ("%s", dir);
return -1;
}
if (!S_ISDIR (statbuf.st_mode)) {
reply_with_error ("%s: not a directory", dir);
return -1;
}
sysrootdirlen = strlen (sysrootdir);
if (asprintf_nowarn (&cmd, "%s %Q -print0", str_find, sysrootdir) == -1) {
reply_with_perror ("asprintf");
return -1;
}
if (verbose)
fprintf (stderr, "%s\n", cmd);
fp = popen (cmd, "r");
if (fp == NULL) {
reply_with_perror ("%s", cmd);
return -1;
}
/* Now we must send the reply message, before the file contents. After
* this there is no opportunity in the protocol to send any error
* message back. Instead we can only cancel the transfer.
*/
reply (NULL, NULL);
/* The code below assumes each path returned can fit into a protocol
* chunk (if not you'll get a runtime protocol error). If this
* turns out not to be a problem at some point in the future then
* we'll need to modify the code to handle it. XXX
*/
while ((r = input_to_nul (fp, str, GUESTFS_MAX_CHUNK_SIZE)) > 0) {
size_t len = strlen (str);
if (len <= sysrootdirlen)
continue;
/* Remove the directory part of the path before sending it. */
if (send_file_write (str + sysrootdirlen, r - sysrootdirlen) < 0) {
pclose (fp);
return -1;
}
}
if (ferror (fp)) {
fprintf (stderr, "fgetc: %s: %m\n", dir);
send_file_end (1); /* Cancel. */
pclose (fp);
return -1;
}
if (pclose (fp) != 0) {
fprintf (stderr, "pclose: %s: %m\n", dir);
send_file_end (1); /* Cancel. */
return -1;
}
if (send_file_end (0)) /* Normal end of file. */
return -1;
return 0;
}
/* Has one FileOut parameter. */
static int
do_compressX_out (const char *file, const char *filter, int is_device)
{
int r;
FILE *fp;
CLEANUP_FREE char *cmd = NULL;
char buf[GUESTFS_MAX_CHUNK_SIZE];
/* The command will look something like:
* gzip -c /sysroot%s # file
* or:
* gzip -c < %s # device
*
* We have to quote the file or device name.
*
* The unnecessary redirect for devices is there because lzop
* unhelpfully refuses to compress anything that isn't a regular
* file.
*/
if (!is_device) {
if (asprintf_nowarn (&cmd, "%s %R", filter, file) == -1) {
reply_with_perror ("asprintf");
return -1;
}
} else {
if (asprintf_nowarn (&cmd, "%s < %Q", filter, file) == -1) {
reply_with_perror ("asprintf");
return -1;
}
}
if (verbose)
fprintf (stderr, "%s\n", cmd);
fp = popen (cmd, "r");
if (fp == NULL) {
reply_with_perror ("%s", cmd);
return -1;
}
/* Now we must send the reply message, before the file contents. After
* this there is no opportunity in the protocol to send any error
* message back. Instead we can only cancel the transfer.
*/
reply (NULL, NULL);
while ((r = fread (buf, 1, sizeof buf, fp)) > 0) {
if (send_file_write (buf, r) < 0) {
pclose (fp);
return -1;
}
}
if (ferror (fp)) {
fprintf (stderr, "fread: %s: %m\n", file);
send_file_end (1); /* Cancel. */
pclose (fp);
return -1;
}
if (pclose (fp) != 0) {
fprintf (stderr, "pclose: %s: %m\n", file);
send_file_end (1); /* Cancel. */
return -1;
}
if (send_file_end (0)) /* Normal end of file. */
return -1;
return 0;
}
/* Has one FileOut parameter. */
int
do_base64_out (const char *file)
{
CLEANUP_FREE char *buf = NULL;
struct stat statbuf;
int r;
FILE *fp;
CLEANUP_FREE char *cmd = NULL;
char buffer[GUESTFS_MAX_CHUNK_SIZE];
/* Check the filename exists and is not a directory (RHBZ#908322). */
buf = sysroot_path (file);
if (buf == NULL) {
reply_with_perror ("malloc");
return -1;
}
if (stat (buf, &statbuf) == -1) {
reply_with_perror ("stat: %s", file);
return -1;
}
if (S_ISDIR (statbuf.st_mode)) {
reply_with_error ("%s: is a directory", file);
return -1;
}
/* Construct the command. */
if (asprintf_nowarn (&cmd, "%s %Q", str_base64, buf) == -1) {
reply_with_perror ("asprintf");
return -1;
}
if (verbose)
fprintf (stderr, "%s\n", cmd);
fp = popen (cmd, "r");
if (fp == NULL) {
reply_with_perror ("%s", cmd);
return -1;
}
/* Now we must send the reply message, before the file contents. After
* this there is no opportunity in the protocol to send any error
* message back. Instead we can only cancel the transfer.
*/
reply (NULL, NULL);
while ((r = fread (buffer, 1, sizeof buffer, fp)) > 0) {
if (send_file_write (buffer, r) < 0) {
pclose (fp);
return -1;
}
}
if (ferror (fp)) {
fprintf (stderr, "fread: %s: %m\n", file);
send_file_end (1); /* Cancel. */
pclose (fp);
return -1;
}
if (pclose (fp) != 0) {
fprintf (stderr, "pclose: %s: %m\n", file);
send_file_end (1); /* Cancel. */
return -1;
}
if (send_file_end (0)) /* Normal end of file. */
return -1;
return 0;
}
/* Takes optional arguments, consult optargs_bitmask. */
int
do_ntfsclone_out (const char *device,
int metadataonly, int rescue, int ignorefscheck,
int preservetimestamps, int force)
{
int r;
FILE *fp;
char *cmd;
char buf[GUESTFS_MAX_CHUNK_SIZE];
/* Construct the ntfsclone command. */
if (asprintf (&cmd, "ntfsclone -o - --save-image%s%s%s%s%s %s",
(optargs_bitmask & GUESTFS_NTFSCLONE_OUT_METADATAONLY_BITMASK) && metadataonly ? " --metadata" : "",
(optargs_bitmask & GUESTFS_NTFSCLONE_OUT_RESCUE_BITMASK) && rescue ? " --rescue" : "",
(optargs_bitmask & GUESTFS_NTFSCLONE_OUT_IGNOREFSCHECK_BITMASK) && ignorefscheck ? " --ignore-fs-check" : "",
(optargs_bitmask & GUESTFS_NTFSCLONE_OUT_PRESERVETIMESTAMPS_BITMASK) && preservetimestamps ? " --preserve-timestamps" : "",
(optargs_bitmask & GUESTFS_NTFSCLONE_OUT_FORCE_BITMASK) && force ? " --force" : "",
device) == -1) {
reply_with_perror ("asprintf");
return -1;
}
if (verbose)
fprintf (stderr, "%s\n", cmd);
fp = popen (cmd, "r");
if (fp == NULL) {
reply_with_perror ("%s", cmd);
free (cmd);
return -1;
}
free (cmd);
/* Now we must send the reply message, before the file contents. After
* this there is no opportunity in the protocol to send any error
* message back. Instead we can only cancel the transfer.
*/
reply (NULL, NULL);
while ((r = fread (buf, 1, sizeof buf, fp)) > 0) {
if (send_file_write (buf, r) < 0) {
pclose (fp);
return -1;
}
}
if (ferror (fp)) {
perror (device);
send_file_end (1); /* Cancel. */
pclose (fp);
return -1;
}
if (pclose (fp) != 0) {
perror (device);
send_file_end (1); /* Cancel. */
return -1;
}
if (send_file_end (0)) /* Normal end of file. */
return -1;
return 0;
}
/* Has one FileOut parameter. */
int
do_ls0 (const char *path)
{
DIR *dir;
struct dirent *d;
size_t len;
CHROOT_IN;
dir = opendir (path);
CHROOT_OUT;
if (dir == NULL) {
reply_with_perror ("opendir: %s", path);
return -1;
}
/* Now we must send the reply message, before the filenames. After
* this there is no opportunity in the protocol to send any error
* message back. Instead we can only cancel the transfer.
*/
reply (NULL, NULL);
while (1) {
errno = 0;
d = readdir (dir);
if (d == NULL) break;
/* Ignore . and .. */
if (STREQ (d->d_name, ".") || STREQ (d->d_name, ".."))
continue;
/* Send the name in a single chunk. XXX Needs to be fixed if
* names can be longer than the chunk size. Note we use 'len+1'
* because we want to include the \0 terminating character in the
* output.
*/
len = strlen (d->d_name);
if (send_file_write (d->d_name, len+1) < 0) {
closedir (dir);
return -1;
}
}
if (errno != 0) {
fprintf (stderr, "readdir: %s: %m\n", path);
send_file_end (1); /* Cancel. */
closedir (dir);
return -1;
}
if (closedir (dir) == -1) {
fprintf (stderr, "closedir: %s: %m\n", path);
send_file_end (1); /* Cancel. */
return -1;
}
if (send_file_end (0)) /* Normal end of file. */
return -1;
return 0;
}
