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Diffstat (limited to 'archival/tar.c')
-rw-r--r--archival/tar.c36
1 files changed, 20 insertions, 16 deletions
diff --git a/archival/tar.c b/archival/tar.c
index 9b7a42a..bd8e5dc 100644
--- a/archival/tar.c
+++ b/archival/tar.c
@@ -735,10 +735,10 @@ enum {
IF_FEATURE_TAR_FROM( OPTBIT_INCLUDE_FROM,)
IF_FEATURE_TAR_FROM( OPTBIT_EXCLUDE_FROM,)
IF_FEATURE_SEAMLESS_GZ( OPTBIT_GZIP ,)
- IF_FEATURE_SEAMLESS_Z( OPTBIT_COMPRESS ,)
- OPTBIT_NOPRESERVE_OWN,
- OPTBIT_NOPRESERVE_PERM,
+ IF_FEATURE_SEAMLESS_Z( OPTBIT_COMPRESS ,) /* 15th bit */
OPTBIT_NUMERIC_OWNER,
+ OPTBIT_NOPRESERVE_OWNER,
+ OPTBIT_NOPRESERVE_PERM,
OPT_TEST = 1 << 0, // t
OPT_EXTRACT = 1 << 1, // x
OPT_BASEDIR = 1 << 2, // C
@@ -755,9 +755,9 @@ enum {
OPT_EXCLUDE_FROM = IF_FEATURE_TAR_FROM( (1 << OPTBIT_EXCLUDE_FROM)) + 0, // X
OPT_GZIP = IF_FEATURE_SEAMLESS_GZ( (1 << OPTBIT_GZIP )) + 0, // z
OPT_COMPRESS = IF_FEATURE_SEAMLESS_Z( (1 << OPTBIT_COMPRESS )) + 0, // Z
- OPT_NOPRESERVE_OWN = 1 << OPTBIT_NOPRESERVE_OWN , // no-same-owner
- OPT_NOPRESERVE_PERM = 1 << OPTBIT_NOPRESERVE_PERM, // no-same-permissions
OPT_NUMERIC_OWNER = 1 << OPTBIT_NUMERIC_OWNER,
+ OPT_NOPRESERVE_OWNER = 1 << OPTBIT_NOPRESERVE_OWNER , // no-same-owner
+ OPT_NOPRESERVE_PERM = 1 << OPTBIT_NOPRESERVE_PERM, // no-same-permissions
};
#if ENABLE_FEATURE_TAR_LONG_OPTIONS
static const char tar_longopts[] ALIGN1 =
@@ -789,12 +789,15 @@ static const char tar_longopts[] ALIGN1 =
# if ENABLE_FEATURE_SEAMLESS_Z
"compress\0" No_argument "Z"
# endif
+ /* use numeric uid/gid from tar header, not textual */
"numeric-owner\0" No_argument "\xfc"
+ /* do not restore owner */
"no-same-owner\0" No_argument "\xfd"
+ /* do not restore mode */
"no-same-permissions\0" No_argument "\xfe"
/* --exclude takes next bit position in option mask, */
/* therefore we have to either put it _after_ --no-same-perm */
- /* or add OPT[BIT]_EXCLUDE before OPT[BIT]_NOPRESERVE_OWN */
+ /* or add OPT[BIT]_EXCLUDE before OPT[BIT]_NOPRESERVE_OWNER */
# if ENABLE_FEATURE_TAR_FROM
"exclude\0" Required_argument "\xff"
# endif
@@ -817,12 +820,12 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
/* Initialise default values */
tar_handle = init_handle();
tar_handle->ah_flags = ARCHIVE_CREATE_LEADING_DIRS
- | ARCHIVE_PRESERVE_DATE
- | ARCHIVE_EXTRACT_UNCONDITIONAL;
+ | ARCHIVE_RESTORE_DATE
+ | ARCHIVE_UNLINK_OLD;
/* Apparently only root's tar preserves perms (see bug 3844) */
if (getuid() != 0)
- tar_handle->ah_flags |= ARCHIVE_NOPRESERVE_PERM;
+ tar_handle->ah_flags |= ARCHIVE_DONT_RESTORE_PERM;
/* Prepend '-' to the first argument if required */
opt_complementary = "--:" // first arg is options
@@ -856,6 +859,7 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
, &verboseFlag // combined count for -t and -v
, &verboseFlag // combined count for -t and -v
);
+ //bb_error_msg("opt:%08x", opt);
argv += optind;
if (verboseFlag) tar_handle->action_header = header_verbose_list;
@@ -868,17 +872,17 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
tar_handle->action_data = data_extract_to_stdout;
if (opt & OPT_KEEP_OLD)
- tar_handle->ah_flags &= ~ARCHIVE_EXTRACT_UNCONDITIONAL;
-
- if (opt & OPT_NOPRESERVE_OWN)
- tar_handle->ah_flags |= ARCHIVE_NOPRESERVE_OWN;
-
- if (opt & OPT_NOPRESERVE_PERM)
- tar_handle->ah_flags |= ARCHIVE_NOPRESERVE_PERM;
+ tar_handle->ah_flags &= ~ARCHIVE_UNLINK_OLD;
if (opt & OPT_NUMERIC_OWNER)
tar_handle->ah_flags |= ARCHIVE_NUMERIC_OWNER;
+ if (opt & OPT_NOPRESERVE_OWNER)
+ tar_handle->ah_flags |= ARCHIVE_DONT_RESTORE_OWNER;
+
+ if (opt & OPT_NOPRESERVE_PERM)
+ tar_handle->ah_flags |= ARCHIVE_DONT_RESTORE_PERM;
+
if (opt & OPT_GZIP)
get_header_ptr = get_header_tar_gz;