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tar: handle -m (--touch) switch, enabled by FEATURE_TAR_NOPRESERVE_TIME
function old new delta .rodata 2731 2779 +48 usage_messages 432 471 +39 tar_main 603 614 +11 tar_longopts 211 219 +8 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 4/0 up/down: 106/0) Total: 106 bytes Signed-off-by: Mikhail Gusarov <dottedmag@dottedmag.net> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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@ -276,6 +276,13 @@ config FEATURE_TAR_UNAME_GNAME
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listings (-t) and preserving permissions when unpacking (-p).
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+200 bytes.
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config FEATURE_TAR_NOPRESERVE_TIME
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bool "Enable -m (do not preserve time) option"
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default n
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depends on TAR
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help
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With this option busybox supports GNU tar -m (do not preserve time) option.
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endif #tar
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config UNCOMPRESS
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@ -748,6 +748,7 @@ enum {
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IF_FEATURE_TAR_FROM( OPTBIT_EXCLUDE_FROM,)
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IF_FEATURE_SEAMLESS_GZ( OPTBIT_GZIP ,)
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IF_FEATURE_SEAMLESS_Z( OPTBIT_COMPRESS ,) // 16th bit
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IF_FEATURE_TAR_NOPRESERVE_TIME(OPTBIT_NOPRESERVE_TIME,)
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#if ENABLE_FEATURE_TAR_LONG_OPTIONS
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OPTBIT_NUMERIC_OWNER,
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OPTBIT_NOPRESERVE_PERM,
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@ -769,6 +770,7 @@ enum {
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OPT_INCLUDE_FROM = IF_FEATURE_TAR_FROM( (1 << OPTBIT_INCLUDE_FROM)) + 0, // T
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OPT_EXCLUDE_FROM = IF_FEATURE_TAR_FROM( (1 << OPTBIT_EXCLUDE_FROM)) + 0, // X
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OPT_GZIP = IF_FEATURE_SEAMLESS_GZ( (1 << OPTBIT_GZIP )) + 0, // z
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OPT_NOPRESERVE_TIME = IF_FEATURE_TAR_NOPRESERVE_TIME((1 << OPTBIT_NOPRESERVE_TIME)) + 0, // m
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OPT_COMPRESS = IF_FEATURE_SEAMLESS_Z( (1 << OPTBIT_COMPRESS )) + 0, // Z
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OPT_NUMERIC_OWNER = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NUMERIC_OWNER )) + 0, // numeric-owner
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OPT_NOPRESERVE_PERM = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NOPRESERVE_PERM)) + 0, // no-same-permissions
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@ -807,6 +809,9 @@ static const char tar_longopts[] ALIGN1 =
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# endif
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# if ENABLE_FEATURE_SEAMLESS_Z
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"compress\0" No_argument "Z"
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# endif
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# if ENABLE_FEATURE_TAR_NOPRESERVE_TIME
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"touch\0" No_argument "m"
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# endif
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/* use numeric uid/gid from tar header, not textual */
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"numeric-owner\0" No_argument "\xfc"
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@ -894,6 +899,7 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
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IF_FEATURE_TAR_FROM( "T:X:")
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IF_FEATURE_SEAMLESS_GZ( "z" )
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IF_FEATURE_SEAMLESS_Z( "Z" )
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IF_FEATURE_TAR_NOPRESERVE_TIME("m")
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, &base_dir // -C dir
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, &tar_filename // -f filename
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IF_FEATURE_TAR_FROM(, &(tar_handle->accept)) // T
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@ -945,6 +951,11 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
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if (opt & OPT_COMPRESS)
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get_header_ptr = get_header_tar_Z;
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#if ENABLE_FEATURE_TAR_NOPRESERVE_TIME
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if (opt & OPT_NOPRESERVE_TIME)
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tar_handle->ah_flags &= ~ARCHIVE_RESTORE_DATE;
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#endif
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#if ENABLE_FEATURE_TAR_FROM
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tar_handle->reject = append_file_list_to_list(tar_handle->reject);
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#if ENABLE_FEATURE_TAR_LONG_OPTIONS
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@ -4408,7 +4408,7 @@
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#define tar_trivial_usage \
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"-[" IF_FEATURE_TAR_CREATE("c") IF_FEATURE_SEAMLESS_GZ("z") \
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IF_FEATURE_SEAMLESS_BZ2("j") IF_FEATURE_SEAMLESS_LZMA("a") \
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IF_FEATURE_SEAMLESS_Z("Z") "xtvO] " \
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IF_FEATURE_SEAMLESS_Z("Z") IF_FEATURE_TAR_NOPRESERVE_TIME("m") "xtvO] " \
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IF_FEATURE_TAR_FROM("[-X FILE] ") \
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"[-f TARFILE] [-C DIR] [FILE]..."
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#define tar_full_usage "\n\n" \
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@ -4433,6 +4433,9 @@
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IF_FEATURE_SEAMLESS_Z( \
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"\n Z Filter the archive through compress" \
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) \
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IF_FEATURE_TAR_NOPRESERVE_TIME( \
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"\n m Do not extract files modified time" \
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) \
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"\nFile selection:" \
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"\n f Name of TARFILE or \"-\" for stdin" \
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"\n O Extract to stdout" \
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