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/* Tarlz - Archiver with multimember lzip compression
Copyright (C) 2013-2026 Antonio Diaz Diaz.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <sys/types.h> // uid_t, gid_t, (BSD major, minor, makedev)
inline bool data_may_follow( const Typeflag typeflag )
{ return typeflag == tf_regular || typeflag == tf_hiperf; }
inline bool uid_gid_in_range( const long long uid, const long long gid )
{ return uid == (long long)( (uid_t)uid ) &&
gid == (long long)( (gid_t)gid ); }
const char * const dotdot_msg = "Contains a '..' component, skipping.";
const char * const cantln_msg = "Can't %slink '%s' to '%s'";
const char * const mkdir_msg = "Can't create directory";
const char * const mknod_msg = "Can't create device node";
const char * const mkfifo_msg = "Can't create FIFO file";
const char * const uftype_msg = "%s: Unknown file type 0x%02X, skipping.";
const char * const chown_msg = "Can't change file owner";
mode_t get_umask();
struct Chdir_error {};
class T_names // list of names in the argument of an option '-T'
{
const char * buffer; // max 4 GiB for the whole -T file
long file_size; // 0 for empty file
std::vector< uint32_t > name_idx; // for each name in buffer
std::vector< uint8_t > name_pending_; // 'uint8_t' for concurrent update
public:
explicit T_names( const char * const filename );
~T_names()
{ if( buffer ) std::free( (void *)buffer ); buffer = 0; file_size = 0; }
unsigned names() const { return name_idx.size(); }
const char * name( const unsigned i ) const { return buffer + name_idx[i]; }
bool name_pending( const unsigned i ) const { return name_pending_[i]; }
void reset_name_pending( const unsigned i ) { name_pending_[i] = false; }
};
/* Lists of file names to be compared, deleted, extracted, or listed.
name_pending_or_idx uses uint8_t instead of bool to allow concurrent
update and provide space for 256 '-T' options. */
struct Cl_names
{
// if parser.code( i ) == 'T', name_pending_or_idx[i] is the index in t_vec
std::vector< uint8_t > name_pending_or_idx;
std::vector< T_names * > t_vec;
explicit Cl_names( const Arg_parser & parser );
~Cl_names() { for( unsigned i = 0; i < t_vec.size(); ++i ) delete t_vec[i]; }
T_names & t_names( const unsigned i )
{ return *t_vec[name_pending_or_idx[i]]; }
bool names_remain( const Arg_parser & parser ) const;
};
// defined in common_decode.cc
bool check_skip_filename( const Cl_options & cl_opts, Cl_names & cl_names,
const char * const filename, const int cwd_fd = -1,
std::string * const msgp = 0 );
bool format_member_name( const Extended & extended, const Tar_header header,
Resizable_buffer & rbuf, const bool long_format );
bool show_member_name( const Extended & extended, const Tar_header header,
const int vlevel, Resizable_buffer & rbuf );
// defined in decode_lz.cc
struct Archive_descriptor; // forward declaration
int decode_lz( const Cl_options & cl_opts, const Archive_descriptor & ad,
Cl_names & cl_names );
// defined in delete.cc
bool safe_seek( const int fd, const long long pos );
int tail_copy( const Arg_parser & parser, const Archive_descriptor & ad,
Cl_names & cl_names, const long long istream_pos,
const int outfd, int retval );
// defined in delete_lz.cc
int delete_members_lz( const Cl_options & cl_opts,
const Archive_descriptor & ad,
Cl_names & cl_names, const int outfd );
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