summaryrefslogtreecommitdiff
path: root/archival/tar.c
diff options
context:
space:
mode:
authorLadislav Michl2010-06-25 01:33:00 +0200
committerDenys Vlasenko2010-06-25 01:33:00 +0200
commit2b46fd49b14b2ac30e0c767c65ac2b29f6922a45 (patch)
tree184e89b5922c87c866c7ae02ca4a87a61d0ac384 /archival/tar.c
parent51fa147c9bab41cc1f7bf5b2e3bbeddf0fdaf5ca (diff)
downloadbusybox-2b46fd49b14b2ac30e0c767c65ac2b29f6922a45.zip
busybox-2b46fd49b14b2ac30e0c767c65ac2b29f6922a45.tar.gz
tar: optional support for --to-command
function old new delta data_extract_to_command - 430 +430 dec2env - 44 +44 tar_main 778 819 +41 str2env - 37 +37 tar_var - 32 +32 xputenv - 22 +22 tar_longopts 257 270 +13 ------------------------------------------------------------------------------ (add/remove: 6/0 grow/shrink: 2/0 up/down: 619/0) Total: 619 bytes Signed-off-by: Ladislav Michl <Ladislav.Michl@seznam.cz> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'archival/tar.c')
-rw-r--r--archival/tar.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/archival/tar.c b/archival/tar.c
index 3a94012..344c9de 100644
--- a/archival/tar.c
+++ b/archival/tar.c
@@ -750,6 +750,7 @@ enum {
IF_FEATURE_SEAMLESS_Z( OPTBIT_COMPRESS ,) // 16th bit
IF_FEATURE_TAR_NOPRESERVE_TIME(OPTBIT_NOPRESERVE_TIME,)
#if ENABLE_FEATURE_TAR_LONG_OPTIONS
+ IF_FEATURE_TAR_TO_COMMAND(OPTBIT_2COMMAND ,)
OPTBIT_NUMERIC_OWNER,
OPTBIT_NOPRESERVE_PERM,
OPTBIT_OVERWRITE,
@@ -772,6 +773,7 @@ enum {
OPT_GZIP = IF_FEATURE_SEAMLESS_GZ( (1 << OPTBIT_GZIP )) + 0, // z
OPT_COMPRESS = IF_FEATURE_SEAMLESS_Z( (1 << OPTBIT_COMPRESS )) + 0, // Z
OPT_NOPRESERVE_TIME = IF_FEATURE_TAR_NOPRESERVE_TIME((1 << OPTBIT_NOPRESERVE_TIME)) + 0, // m
+ OPT_2COMMAND = IF_FEATURE_TAR_TO_COMMAND( (1 << OPTBIT_2COMMAND )) + 0, // to-command
OPT_NUMERIC_OWNER = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NUMERIC_OWNER )) + 0, // numeric-owner
OPT_NOPRESERVE_PERM = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NOPRESERVE_PERM)) + 0, // no-same-permissions
OPT_OVERWRITE = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_OVERWRITE )) + 0, // overwrite
@@ -813,6 +815,9 @@ static const char tar_longopts[] ALIGN1 =
# if ENABLE_FEATURE_TAR_NOPRESERVE_TIME
"touch\0" No_argument "m"
# endif
+# if ENABLE_FEATURE_TAR_TO_COMMAND
+ "to-command\0" Required_argument "\xfb"
+# endif
/* use numeric uid/gid from tar header, not textual */
"numeric-owner\0" No_argument "\xfc"
/* do not restore mode */
@@ -904,6 +909,7 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
, &tar_filename // -f filename
IF_FEATURE_TAR_FROM(, &(tar_handle->accept)) // T
IF_FEATURE_TAR_FROM(, &(tar_handle->reject)) // X
+ IF_FEATURE_TAR_TO_COMMAND(, &(tar_handle->tar__to_command)) // --to-command
#if ENABLE_FEATURE_TAR_LONG_OPTIONS && ENABLE_FEATURE_TAR_FROM
, &excludes // --exclude
#endif
@@ -922,6 +928,12 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
if (opt & OPT_2STDOUT)
tar_handle->action_data = data_extract_to_stdout;
+ if (opt & OPT_2COMMAND) {
+ putenv((char*)"TAR_FILETYPE=f");
+ signal(SIGPIPE, SIG_IGN);
+ tar_handle->action_data = data_extract_to_command;
+ }
+
if (opt & OPT_KEEP_OLD)
tar_handle->ah_flags &= ~ARCHIVE_UNLINK_OLD;