(check_time): Warn about implausibly old time stamps.
(set_stat): Use utimbuf, not stat_info.
(preprare_to_extract): New arg DIRECTORY.
(fill_in_sparse_array): Moved here from compare.c.
(extract_sparse_file): Now returns off_t, giving size left.
Truncate file at end.
(extract_archive): Use safer_name_suffix rather than rolling our own.
Use fill_in_sparse_array rather than rolling our own.
Strip trailing slashes more effectively.
Check for unsafe names.
(delay_set_stat): Initialize it to 0.
(set_mode): New arg current_stat_info. Use it (if nonnull) to avoid
taking an extra stat ourselves. All callers changed.
(set_stat): Likewise.
(apply_nonancestor_delayed_set_stat): New arg 'after_symlinks'.
If false, stop when encountering a struct whose 'after_symlinks' member is
true. Otherwise, go through all structures but check them more carefully.
All callers changed.
(extract_archive): When extracting a deferred symlink, if its parent
directory's status needs fixing, then mark the directory as needing
to be fixed after symlinks.
(extract_finish): Fix status of ordinary directories, then apply delayed
symlinks, then fix the status of directories that are ancestors
of delayed symlinks.
name size allocation that caused core dumps.
From Jan.Djarv@mbox200.swipnet.se.
(extract_archive): Use strcpy, not memcpy,
for consistency with other code that does similar things.
Support hard links to symbolic links.
(struct delayed_symlink): Remove 'names' member, replacing it with
'sources' and 'target' member. All uses changed.
(struct string_list): New type.
(delayed_set_stat, extract_archive): Use offsetof when computing sizes
for struct hack; this avoids wasted space in some cases.
(extract_archive): Fix test for absolute pathnames and/or "..".
Use link_error to report errors for links.
Remove redundant trailing '/' at "really_dir", for all uses, not
just before invoking mkdir.
If overwriting old files, do not worry so much about existing directories.
Fix mode computation in the case where the directory exists.
(apply_delayed_symlinks): If we can't make a hard link to a symbolic
link, make a copy of the symbolic link.
(make_directories): Skip filesystem prefixes.
Don't assume '/' is the only separator.
(extract_sparse_file): Use new full_write semantics.
On write error, return instead of invoking skip_file.
Do not free sparsearray; caller does this now.
(apply_nonancestor_delayed_set_stat): Do not assume '/' is the only
separator.
(extract_archive): Don't assume file name lengths fit in int.
Report what got stripped from member name; it might be more than '/'.
Use new full_write semantics.
Do not pass redundant trailing "/" to mkdir, as POSIX does not allow
mkdir to ignore it.
Do not report mkdir error if old_files_option == KEEP_OLD_FILES.
(struct delayed_symlink): New type.
(delayed_symlink_head): New var.
(extr_init, fatal_exit):
Invoke extract_finish on fatal errors, not apply_delayed_set_stat.
(set_mode, set_stat): Pointer args are now const pointers.
(check_time): New function.
(set_stat): Warn if setting a file's timestamp to be the future.
(make_directories): Do not save and restore errno.
(maybe_recoverable): Set errno to ENOENT if we cannot make missing
intermediate directories.
(extract_archive):
Invoke apply_nonancestor_delayed_set_stat here, not in caller.
Extract potentially dangerous symbolic links more carefully, deferring their
creation until the end, and using a regular file placeholder in the meantime.
Do not remove trailing / and /. from file names.
Do not bother checking for ".." when checking whether a directory
loops back on itself, as loopbacks can occur with symlinks too.
Also, in that case, do not bother saving and restoring errno; just
set it to EEXIST.
(apply_nonancestor_delayed_set_stat): A prefix is a potential ancestor if
it ends in slash too (as well as ending in a char just before slash).
(apply_delayed_set_stat): Remove.
(apply_delayed_symlinks, extract_finish): New functions.
(set_mode): Use Use error message functions to report errors consistently.
(set_stat): Likewise.
(repair_delayed_set_stat): Quote file names with colons if possible.
(prepare_to_extract): Don't complain if we can't remove ".".
(extract_sparse_file): Use consistent message for unexpected EOF.
Use error message functions to report errors consistently.
(extract_archive): Use consistent message for unexpected EOF.
Use error message functions to report errors consistently.
Quote file names with colons if possible.
(apply_delayed_set_stat): New function.
(apply_nonancestor_delayed_set_stat): Renamed from apply_delayed_set_stat.
Don't remove head if it doesn't apply.
(fatal_exit): Invoke apply_delayed_set_stat with no args.
(enum permstatus): New enum.
(struct delayed_set_stat): file_name is now at end of buffer, to avoid
two mallocs. New members file_name_len, invert_permissions, permstatus.
(extr_init): Remove hack that silently adjusted newdir_umask.
(set_mode, set_stat): New args invert_permissions, permstatus, typeflag.
Use these args to decide whether and how to set modes.
(set_mode, set_stat, prepare_to_extract, extract_sparse_file, extract_archive):
Don't assume that gettext preserves errno.
(set_stat): Remove arg symlink_flag; subsumed by typeflag.
(delay_set_stat, repair_delayed_set_stat): New functions.
(make_directories): Avoid mkdir where last part of path is "..".
Create a struct delayed_set_stat for each directory made.
(prepare_to_extract): Renamed from unlink_destination, and
return 0 immediately if to_stdout_option; all callers changed.
(maybe_recoverable): New parameter interdir_made.
Add support for --overwrite.
(extract_sparse_file, extract_archive):
Quote arbitrary strings in diagnostics.
(extract_archive): By default, warn about ".." in member names, and skip them.
Don't open files with O_NONBLOCK or O_APPEND.
Open with O_TRUNC only if --overwrite; otherwise, use O_EXCL to avoid
overwriting them. Pass only rwxrwxrwx permissions to `open' and `mkdir',
minus the current umask. Keep track of intermediate directories made,
to avoid looping when making x/../x when x doesn't exist; the
earlier code solved this in a different way that didn't fit well
into the new scheme. Don't extract permissions onto existing
directories unless --overwrite is given. Do not add -wx------
permissions to new directories permanently; just do it temporarily.
Remove no-longer-needed hack with MSDOS and directory time stamps.
(apply_delayed_set_stat): New argument specifies which directories to
fix statuses of. Do not wait until the end of extraction to fix
statuses; instead, fix a directory's status once we exit that directory.
This requires less memory and does the right thing in some cases
where the old method didn't.
(fatal_exit): New function.
(time): No need to declare.
(now): Remove variable.
(extr_init): Don't initialize `now'.
Increment same_permissions_option and same_owner_option if we_are_root
is nonzero; this supports the new --no-same-owner option.
(set_stat): Use start_time instead of `now'.
(unlink_destination): New function, which checks for unlink failures.
(maybe_recoverable): Stay quiet if -U.
(extract_archive): Use O_EXCL if unlink_first_option.
Report unlink failures.
Use HAVE_SYMLINK, not S_ISLNK, to determine whether symlink exists.
Use HAVE_MKFIFO || defined mkfifo, not S_ISFIFO, to determine whether
mkfifo exists.
Do not assume mode bits have traditional Unix values.
(set_mode): Use %04 not %0.4 format.
(extract_sparse_file): Do not use data_block uninitialized.
Check for lseek failures; use portable lseek whence values.
(extract_sparse_file): Args now use off_t.
(set_mode, set_stat, make_directories, extract_sparse_file,
extract_archive): Use off_t, size_t, ssize_t when appropriate. Remove
now-useless casts. Use unsigned long to print *_t types, except use
STRINGIFY_BIGINT for off_t.
