with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-#include "system.h"
+#include <system.h>
#if HAVE_UTIME_H
# include <utime.h>
strncpy (dst, src, len);
}
+/* Same as tar_copy_str, but always terminate with NUL if using
+ is OLDGNU format */
+static void
+tar_name_copy_str (char *dst, const char *src, size_t len)
+{
+ tar_copy_str (dst, src, len);
+ if (archive_format == OLDGNU_FORMAT)
+ dst[len-1] = 0;
+}
+
/* Write a "private" header */
union block *
start_private_header (const char *name, size_t size)
memset (header->buffer, 0, sizeof (union block));
- tar_copy_str (header->header.name, name, NAME_FIELD_SIZE);
+ tar_name_copy_str (header->header.name, name, NAME_FIELD_SIZE);
OFF_TO_CHARS (size, header->header.size);
time (&t);
{
union block *header = find_next_block ();
memset (header->buffer, 0, sizeof (union block));
- tar_copy_str (header->header.name, st->file_name, NAME_FIELD_SIZE);
+ tar_name_copy_str (header->header.name, st->file_name, NAME_FIELD_SIZE);
return header;
}
xheader_store ("path", st, NULL);
return write_short_name (st);
}
- else if (NAME_FIELD_SIZE < strlen (st->file_name))
+ else if ((archive_format == OLDGNU_FORMAT
+ && OLDGNU_NAME_FIELD_SIZE < strlen (st->file_name))
+ || NAME_FIELD_SIZE < strlen (st->file_name))
return write_long_name (st);
else
return write_short_name (st);
}
}
+/* Look in directory DIRNAME for a cache directory tag file
+ with the magic name "CACHEDIR.TAG" and a standard header,
+ as described at:
+ http://www.brynosaurus.com/cachedir
+ Applications can write this file into directories they create
+ for use as caches containing purely regenerable, non-precious data,
+ allowing us to avoid archiving them if --exclude-caches is specified. */
+
+#define CACHEDIR_SIGNATURE "Signature: 8a477f597d28d172789f06886806bc55"
+#define CACHEDIR_SIGNATURE_SIZE (sizeof CACHEDIR_SIGNATURE - 1)
+
+static bool
+check_cache_directory (char *dirname)
+{
+ static char tagname[] = "CACHEDIR.TAG";
+ char *tagpath;
+ int fd;
+ int tag_present = false;
+
+ tagpath = xmalloc (strlen (dirname) + strlen (tagname) + 1);
+ strcpy (tagpath, dirname);
+ strcat (tagpath, tagname);
+
+ fd = open (tagpath, O_RDONLY);
+ if (fd >= 0)
+ {
+ static char tagbuf[CACHEDIR_SIGNATURE_SIZE];
+
+ if (read (fd, tagbuf, CACHEDIR_SIGNATURE_SIZE)
+ == CACHEDIR_SIGNATURE_SIZE
+ && memcmp (tagbuf, CACHEDIR_SIGNATURE, CACHEDIR_SIGNATURE_SIZE) == 0)
+ tag_present = true;
+
+ close (fd);
+ }
+
+ free (tagpath);
+
+ return tag_present;
+}
+
static void
dump_dir0 (char *directory,
struct tar_stat_info *st, int top_level, dev_t parent_device)
return;
}
+ if (exclude_caches_option
+ && check_cache_directory(st->orig_file_name))
+ {
+ if (verbose_option)
+ WARN ((0, 0,
+ _("%s: contains a cache directory tag; not dumped"),
+ quotearg_colon (st->orig_file_name)));
+ return;
+ }
+
{
char const *entry;
size_t entry_len;
- char *name_buf = strdup (st->orig_file_name);
+ char *name_buf = xstrdup (st->orig_file_name);
size_t name_size = strlen (name_buf);
size_t name_len = name_size;
block_ordinal = current_block_ordinal ();
assign_string (&st->link_name, link_name);
- if (NAME_FIELD_SIZE < strlen (link_name))
+ if ((archive_format == OLDGNU_FORMAT
+ && OLDGNU_NAME_FIELD_SIZE < strlen (link_name))
+ || NAME_FIELD_SIZE < strlen (link_name))
write_long_link (st);
st->stat.st_size = 0;
{
if (lp->nlink)
{
- WARN ((0, 0, _("Missing links to '%s'.\n"), lp->name));
+ WARN ((0, 0, _("Missing links to %s.\n"), quote (lp->name)));
}
}
}
&& OLDER_STAT_TIME (st->stat, m)
&& (!after_date_option || OLDER_STAT_TIME (st->stat, c)))
{
- if (!incremental_option)
+ if (!incremental_option && verbose_option)
WARN ((0, 0, _("%s: file is unchanged; not dumped"),
quotearg_colon (p)));
return;
}
buffer[size] = '\0';
assign_string (&st->link_name, buffer);
- if (size > NAME_FIELD_SIZE)
+ if ((archive_format == OLDGNU_FORMAT && size > OLDGNU_NAME_FIELD_SIZE)
+ || size > NAME_FIELD_SIZE)
write_long_link (st);
block_ordinal = current_block_ordinal ();