/* Create a tar archive.
Copyright (C) 1985, 1992, 1993, 1994, 1996, 1997, 1999, 2000, 2001,
- 2003, 2004, 2005, 2006, 2007, 2009 Free Software Foundation, Inc.
+ 2003, 2004, 2005, 2006, 2007, 2009, 2010 Free Software Foundation, Inc.
Written by John Gilmore, on 1985-08-25.
message));
}
-enum exclusion_tag_type
+enum exclusion_tag_type
check_exclusion_tags (const char *dirname, const char **tag_file_name)
{
static char *tagname;
struct exclusion_tag *tag;
size_t dlen = strlen (dirname);
int addslash = !ISSLASH (dirname[dlen-1]);
- char *nptr = NULL;
-
+ size_t noff = 0;
+
for (tag = exclusion_tags; tag; tag = tag->next)
{
size_t size = dlen + addslash + tag->length + 1;
tagname = xrealloc (tagname, tagsize);
}
- if (!nptr)
+ if (noff == 0)
{
strcpy (tagname, dirname);
- nptr = tagname + dlen;
+ noff = dlen;
if (addslash)
- *nptr++ = '/';
+ tagname[noff++] = '/';
}
- strcpy (nptr, tag->name);
+ strcpy (tagname + noff, tag->name);
if (access (tagname, F_OK) == 0
&& (!tag->predicate || tag->predicate (tagname)))
{
1. In OLDGNU_FORMAT all strings in a tar header end in \0
2. Incremental archives use oldgnu_header.
-
+
Apart from this they are completely identical. */
uintmax_t s = (negsub &= archive_format == GNU_FORMAT) ? - sub : sub;
char subbuf[UINTMAX_STRSIZE_BOUND + 1];
&& S_IROTH == TOREAD && S_IWOTH == TOWRITE && S_IXOTH == TOEXEC
&& archive_format != POSIX_FORMAT
&& archive_format != USTAR_FORMAT
- && archive_format != GNU_FORMAT
- && archive_format != OLDGNU_FORMAT)
+ && archive_format != GNU_FORMAT)
{
negative = v < 0;
u = v;
/* Write a "private" header */
union block *
-start_private_header (const char *name, size_t size)
+start_private_header (const char *name, size_t size, time_t t)
{
- time_t t;
union block *header = find_next_block ();
memset (header->buffer, 0, sizeof (union block));
tar_name_copy_str (header->header.name, name, NAME_FIELD_SIZE);
OFF_TO_CHARS (size, header->header.size);
- time (&t);
TIME_TO_CHARS (t, header->header.mtime);
MODE_TO_CHARS (S_IFREG|S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH, header->header.mode);
UID_TO_CHARS (getuid (), header->header.uid);
union block *header;
char *tmpname;
- header = start_private_header ("././@LongLink", size);
- FILL(header->header.mtime, '0');
- FILL(header->header.mode, '0');
- FILL(header->header.uid, '0');
- FILL(header->header.gid, '0');
- FILL(header->header.devmajor, 0);
- FILL(header->header.devminor, 0);
+ header = start_private_header ("././@LongLink", size, time (NULL));
+ FILL (header->header.mtime, '0');
+ FILL (header->header.mode, '0');
+ FILL (header->header.uid, '0');
+ FILL (header->header.gid, '0');
+ FILL (header->header.devmajor, 0);
+ FILL (header->header.devminor, 0);
uid_to_uname (0, &tmpname);
UNAME_TO_CHARS (tmpname, header->header.uname);
free (tmpname);
{
size_t i;
- if (length > PREFIX_FIELD_SIZE)
+ if (length > PREFIX_FIELD_SIZE + 1)
length = PREFIX_FIELD_SIZE + 1;
+ else if (ISSLASH (name[length - 1]))
+ length--;
for (i = length - 1; i > 0; i--)
if (ISSLASH (name[i]))
break;
write_ustar_long_name (const char *name)
{
size_t length = strlen (name);
- size_t i;
+ size_t i, nlen;
union block *header;
if (length > PREFIX_FIELD_SIZE + NAME_FIELD_SIZE + 1)
}
i = split_long_name (name, length);
- if (i == 0 || length - i - 1 > NAME_FIELD_SIZE)
+ if (i == 0 || (nlen = length - i - 1) > NAME_FIELD_SIZE || nlen == 0)
{
ERROR ((0, 0,
_("%s: file name is too long (cannot be split); not dumped"),
union block *header, hp;
char *p;
int type;
+ time_t t;
if (st->xhdr.buffer || st->xhdr.stk == NULL)
return old_header;
{
type = XGLTYPE;
p = xheader_ghdr_name ();
+ time (&t);
}
else
{
type = XHDTYPE;
p = xheader_xhdr_name (st);
+ t = st->stat.st_mtime;
}
- xheader_write (type, p, &st->xhdr);
+ xheader_write (type, p, t, &st->xhdr);
free (p);
header = find_next_block ();
memcpy (header, &hp.buffer, sizeof (hp.buffer));
&& header->header.typeflag != XHDTYPE
&& header->header.typeflag != XGLTYPE)
{
- /* These globals are parameters to print_header, sigh. */
-
- current_header = header;
+ /* FIXME: This global is used in print_header, sigh. */
current_format = archive_format;
- print_header (st, block_ordinal);
+ print_header (st, header, block_ordinal);
}
header = write_extended (false, st, header);
union block *blk;
while (size_left > 0)
{
- mv_size_left (size_left);
blk = find_next_block ();
memset (blk->buffer, 0, BLOCKSIZE);
set_next_block_after (blk);
finish_header (st, blk, block_ordinal);
- mv_begin (st);
+ mv_begin_write (st->file_name, st->stat.st_size, st->stat.st_size);
while (size_left > 0)
{
size_t bufsize, count;
-
- mv_size_left (size_left);
blk = find_next_block ();
size_left),
quotearg_colon (st->orig_file_name),
STRINGIFY_BIGINT (size_left, buf)));
- if (! ignore_failed_read_option)
- exit_status = TAREXIT_DIFFERS;
+ if (! ignore_failed_read_option)
+ set_exit_status (TAREXIT_DIFFERS);
pad_archive (size_left - (bufsize - count));
return dump_status_short;
}
\f
static void
dump_dir0 (char *directory,
- struct tar_stat_info *st, int top_level, dev_t parent_device)
+ struct tar_stat_info *st, bool top_level, dev_t parent_device)
{
dev_t our_device = st->stat.st_dev;
const char *tag_file_name;
-
- if (!is_avoided_name (st->orig_file_name))
- {
- union block *blk = NULL;
- off_t block_ordinal = current_block_ordinal ();
- st->stat.st_size = 0; /* force 0 size on dir */
+ union block *blk = NULL;
+ off_t block_ordinal = current_block_ordinal ();
- blk = start_header (st);
- if (!blk)
- return;
+ st->stat.st_size = 0; /* force 0 size on dir */
- if (incremental_option && archive_format != POSIX_FORMAT)
- blk->header.typeflag = GNUTYPE_DUMPDIR;
- else /* if (standard_option) */
- blk->header.typeflag = DIRTYPE;
+ blk = start_header (st);
+ if (!blk)
+ return;
- /* If we're gnudumping, we aren't done yet so don't close it. */
+ if (incremental_option && archive_format != POSIX_FORMAT)
+ blk->header.typeflag = GNUTYPE_DUMPDIR;
+ else /* if (standard_option) */
+ blk->header.typeflag = DIRTYPE;
- if (!incremental_option)
- finish_header (st, blk, block_ordinal);
- else if (gnu_list_name->directory)
+ /* If we're gnudumping, we aren't done yet so don't close it. */
+
+ if (!incremental_option)
+ finish_header (st, blk, block_ordinal);
+ else if (gnu_list_name->directory)
+ {
+ if (archive_format == POSIX_FORMAT)
{
- if (archive_format == POSIX_FORMAT)
- {
- xheader_store ("GNU.dumpdir", st,
- safe_directory_contents (gnu_list_name->directory));
- finish_header (st, blk, block_ordinal);
- }
- else
+ xheader_store ("GNU.dumpdir", st,
+ safe_directory_contents (gnu_list_name->directory));
+ finish_header (st, blk, block_ordinal);
+ }
+ else
+ {
+ off_t size_left;
+ off_t totsize;
+ size_t bufsize;
+ ssize_t count;
+ const char *buffer, *p_buffer;
+
+ block_ordinal = current_block_ordinal ();
+ buffer = safe_directory_contents (gnu_list_name->directory);
+ totsize = dumpdir_size (buffer);
+ OFF_TO_CHARS (totsize, blk->header.size);
+ finish_header (st, blk, block_ordinal);
+ p_buffer = buffer;
+ size_left = totsize;
+
+ mv_begin_write (st->file_name, totsize, totsize);
+ while (size_left > 0)
{
- off_t size_left;
- off_t totsize;
- size_t bufsize;
- ssize_t count;
- const char *buffer, *p_buffer;
-
- block_ordinal = current_block_ordinal ();
- buffer = safe_directory_contents (gnu_list_name->directory);
- totsize = dumpdir_size (buffer);
- OFF_TO_CHARS (totsize, blk->header.size);
- finish_header (st, blk, block_ordinal);
- p_buffer = buffer;
- size_left = totsize;
-
- mv_begin (st);
- mv_total_size (totsize);
- while (size_left > 0)
+ blk = find_next_block ();
+ bufsize = available_space_after (blk);
+ if (size_left < bufsize)
{
- mv_size_left (size_left);
- blk = find_next_block ();
- bufsize = available_space_after (blk);
- if (size_left < bufsize)
- {
- bufsize = size_left;
- count = bufsize % BLOCKSIZE;
- if (count)
- memset (blk->buffer + size_left, 0, BLOCKSIZE - count);
- }
- memcpy (blk->buffer, p_buffer, bufsize);
- size_left -= bufsize;
- p_buffer += bufsize;
- set_next_block_after (blk + (bufsize - 1) / BLOCKSIZE);
+ bufsize = size_left;
+ count = bufsize % BLOCKSIZE;
+ if (count)
+ memset (blk->buffer + size_left, 0, BLOCKSIZE - count);
}
- mv_end ();
+ memcpy (blk->buffer, p_buffer, bufsize);
+ size_left -= bufsize;
+ p_buffer += bufsize;
+ set_next_block_after (blk + (bufsize - 1) / BLOCKSIZE);
}
- return;
}
+ return;
}
if (!recursion_option)
{
char *name_buf;
size_t name_size;
-
+
switch (check_exclusion_tags (st->orig_file_name, &tag_file_name))
{
case exclusion_tag_all:
/* Handled in dump_file0 */
break;
-
+
case exclusion_tag_none:
{
char const *entry;
}
strcpy (name_buf + name_len, entry);
if (!excluded_name (name_buf))
- dump_file (name_buf, 0, our_device);
+ dump_file (name_buf, false, our_device);
}
-
+
free (name_buf);
}
break;
name_buf = xmalloc (name_size);
strcpy (name_buf, st->orig_file_name);
strcat (name_buf, tag_file_name);
- dump_file (name_buf, 0, our_device);
+ dump_file (name_buf, false, our_device);
free (name_buf);
break;
-
+
case exclusion_tag_under:
exclusion_tag_warning (st->orig_file_name, tag_file_name,
_("contents not dumped"));
}
static bool
-dump_dir (int fd, struct tar_stat_info *st, int top_level, dev_t parent_device)
+dump_dir (int fd, struct tar_stat_info *st, bool top_level,
+ dev_t parent_device)
{
char *directory = fdsavedir (fd);
if (!directory)
void
create_archive (void)
{
- const char *p;
+ struct name const *p;
open_archive (ACCESS_WRITE);
buffer_write_global_xheader ();
collect_and_sort_names ();
while ((p = name_from_list ()) != NULL)
- if (!excluded_name (p))
- dump_file (p, -1, (dev_t) 0);
+ if (!excluded_name (p->name))
+ dump_file (p->name, p->cmdline, (dev_t) 0);
blank_name_list ();
while ((p = name_from_list ()) != NULL)
- if (!excluded_name (p))
+ if (!excluded_name (p->name))
{
- size_t plen = strlen (p);
+ size_t plen = strlen (p->name);
if (buffer_size <= plen)
{
while ((buffer_size *= 2) <= plen)
continue;
buffer = xrealloc (buffer, buffer_size);
}
- memcpy (buffer, p, plen);
+ memcpy (buffer, p->name, plen);
if (! ISSLASH (buffer[plen - 1]))
buffer[plen++] = DIRECTORY_SEPARATOR;
q = directory_contents (gnu_list_name->directory);
buffer = xrealloc (buffer, buffer_size);
}
strcpy (buffer + plen, q + 1);
- dump_file (buffer, -1, (dev_t) 0);
+ dump_file (buffer, false, (dev_t) 0);
}
q += qlen + 1;
}
}
else
{
- while ((p = name_next (1)) != NULL)
- if (!excluded_name (p))
- dump_file (p, 1, (dev_t) 0);
+ const char *name;
+ while ((name = name_next (1)) != NULL)
+ if (!excluded_name (name))
+ dump_file (name, true, (dev_t) 0);
}
write_eot ();
close_archive ();
-
+ finish_deferred_unlinks ();
if (listed_incremental_option)
write_directory_file ();
}
(0, 0, _("%s: Unknown file type; file ignored"),
quotearg_colon (p)));
if (!ignore_failed_read_option)
- exit_status = TAREXIT_FAILURE;
+ set_exit_status (TAREXIT_FAILURE);
}
\f
blk->header.typeflag = LNKTYPE;
finish_header (st, blk, block_ordinal);
- if (remove_files_option && unlink (st->orig_file_name) != 0)
- unlink_error (st->orig_file_name);
+ if (remove_files_option)
+ queue_deferred_unlink (st->orig_file_name, false);
return true;
}
assign_string (&linkname, st->orig_file_name);
transform_name (&linkname, XFORM_LINK);
-
+
lp = xmalloc (offsetof (struct link, name)
+ strlen (linkname) + 1);
lp->ino = st->stat.st_ino;
lp->nlink = st->stat.st_nlink;
strcpy (lp->name, linkname);
free (linkname);
-
+
if (! ((link_table
|| (link_table = hash_initialize (0, 0, hash_link,
compare_links, 0)))
&& (duplicate = hash_insert (link_table, lp))))
xalloc_die ();
-
+
if (duplicate != lp)
abort ();
lp->nlink--;
}
}
-
/* Dump a single file, recursing on directories. P is the file name
to dump. TOP_LEVEL tells whether this is a top-level call; zero
means no, positive means yes, and negative means the top level
static void
dump_file0 (struct tar_stat_info *st, const char *p,
- int top_level, dev_t parent_device)
+ bool top_level, dev_t parent_device)
{
union block *header;
char type;
if (deref_stat (dereference_option, p, &st->stat) != 0)
{
- stat_diag (p);
+ file_removed_diag (p, top_level, stat_diag);
return;
}
st->archive_file_size = original_size = st->stat.st_size;
/* See if we want only new files, and check if this one is too old to
put in the archive.
-
+
This check is omitted if incremental_option is set *and* the
requested file is not explicitely listed in the command line. */
-
+
if (!(incremental_option && !is_individual_file (p))
&& !S_ISDIR (st->stat.st_mode)
&& OLDER_TAR_STAT_TIME (*st, m)
return;
}
- if (is_avoided_name (p))
- return;
-
is_dir = S_ISDIR (st->stat.st_mode) != 0;
if (!is_dir && dump_hard_link (st))
: 0)));
if (fd < 0)
{
- if (!top_level && errno == ENOENT)
- WARNOPT (WARN_FILE_REMOVED,
- (0, 0, _("%s: File removed before we read it"),
- quotearg_colon (p)));
- else
- open_diag (p);
+ file_removed_diag (p, top_level, open_diag);
return;
}
}
{
exclusion_tag_warning (st->orig_file_name, tag_file_name,
_("directory not dumped"));
+ if (fd >= 0)
+ close (fd);
return;
}
-
+
ok = dump_dir (fd, st, top_level, parent_device);
/* dump_dir consumes FD if successful. */
{
case dump_status_ok:
case dump_status_short:
- mv_end ();
file_count_links (st);
break;
: fstat (fd, &final_stat))
!= 0)
{
- stat_diag (p);
+ file_removed_diag (p, top_level, stat_diag);
ok = false;
}
}
WARNOPT (WARN_FILE_CHANGED,
(0, 0, _("%s: file changed as we read it"),
quotearg_colon (p)));
- if (exit_status == TAREXIT_SUCCESS)
- exit_status = TAREXIT_DIFFERS;
+ set_exit_status (TAREXIT_DIFFERS);
}
else if (atime_preserve_option == replace_atime_preserve
&& set_file_atime (fd, p, restore_times) != 0)
}
if (ok && remove_files_option)
- {
- if (is_dir)
- {
- if (rmdir (p) != 0 && errno != ENOTEMPTY)
- rmdir_error (p);
- }
- else
- {
- if (unlink (p) != 0)
- unlink_error (p);
- }
- }
+ queue_deferred_unlink (p, is_dir);
return;
}
size = readlink (p, buffer, linklen + 1);
if (size < 0)
{
- readlink_diag (p);
+ file_removed_diag (p, top_level, readlink_diag);
return;
}
buffer[size] = '\0';
/* nothing more to do to it */
if (remove_files_option)
- {
- if (unlink (p) == -1)
- unlink_error (p);
- }
+ queue_deferred_unlink (p, false);
+
file_count_links (st);
return;
}
finish_header (st, header, block_ordinal);
if (remove_files_option)
- {
- if (unlink (p) == -1)
- unlink_error (p);
- }
+ queue_deferred_unlink (p, false);
}
void
-dump_file (const char *p, int top_level, dev_t parent_device)
+dump_file (const char *p, bool top_level, dev_t parent_device)
{
struct tar_stat_info st;
tar_stat_init (&st);
projects / chaz / tar / blobdiff