main/busybox: backport tar --no-recursion

1 files changed, 112 insertions, 0 deletions

diff --git a/main/busybox/0001-tar-Implement-no-recursion.patch b/main/busybox/0001-tar-Implement-no-recursion.patch
new file mode 100644
index 000000000..b457c50c9
--- /dev/null
+++ b/main/busybox/0001-tar-Implement-no-recursion.patch
@@ -0,0 +1,112 @@
+From abc357b4612ac02e9246eccdde8dcfcda81a5433 Mon Sep 17 00:00:00 2001
+From: Natanael Copa <ncopa@alpinelinux.org>
+Date: Tue, 24 Apr 2012 17:02:15 +0200
+Subject: [PATCH] tar: Implement --no-recursion
+
+bloatcheck on x86_64:
+
+function                                             old     new   delta
+tar_longopts                                         259     274     +15
+.rodata                                             5757    5772     +15
+tar_main                                            1038    1052     +14
+writeTarFile                                         362     353      -9
+------------------------------------------------------------------------------
+(add/remove: 0/0 grow/shrink: 3/1 up/down: 44/-9)              Total: 35 bytes
+   text	   data	    bss	    dec	    hex	filename
+  81457	   1706	   8344	  91507	  16573	busybox_old
+  81477	   1706	   8344	  91527	  16587	busybox_unstripped
+
+Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
+---
+ archival/tar.c |   19 ++++++++++++-------
+ 1 file changed, 12 insertions(+), 7 deletions(-)
+
+diff --git a/archival/tar.c b/archival/tar.c
+index cf972c2..a64d651 100644
+--- a/archival/tar.c
++++ b/archival/tar.c
+@@ -60,8 +60,8 @@
+ 
+ #if !ENABLE_FEATURE_SEAMLESS_GZ && !ENABLE_FEATURE_SEAMLESS_BZ2
+ /* Do not pass gzip flag to writeTarFile() */
+-#define writeTarFile(tar_fd, verboseFlag, dereferenceFlag, include, exclude, gzip) \
+-	writeTarFile(tar_fd, verboseFlag, dereferenceFlag, include, exclude)
++#define writeTarFile(tar_fd, verboseFlag, recurseFlags, include, exclude, gzip) \
++	writeTarFile(tar_fd, verboseFlag, recurseFlags, include, exclude)
+ #endif
+ 
+ 
+@@ -598,7 +598,7 @@ static void NOINLINE vfork_compressor(int tar_fd, int gzip)
+ 
+ /* gcc 4.2.1 inlines it, making code bigger */
+ static NOINLINE int writeTarFile(int tar_fd, int verboseFlag,
+-	int dereferenceFlag, const llist_t *include,
++	int recurseFlags, const llist_t *include,
+ 	const llist_t *exclude, int gzip)
+ {
+ 	int errorFlag = FALSE;
+@@ -621,8 +621,7 @@ static NOINLINE int writeTarFile(int tar_fd, int verboseFlag,
+ 
+ 	/* Read the directory/files and iterate over them one at a time */
+ 	while (include) {
+-		if (!recursive_action(include->data, ACTION_RECURSE |
+-				(dereferenceFlag ? ACTION_FOLLOWLINKS : 0),
++		if (!recursive_action(include->data, recurseFlags,
+ 				writeFileToTarball, writeFileToTarball, &tbInfo, 0)
+ 		) {
+ 			errorFlag = TRUE;
+@@ -662,7 +661,7 @@ static NOINLINE int writeTarFile(int tar_fd, int verboseFlag,
+ }
+ #else
+ int writeTarFile(int tar_fd, int verboseFlag,
+-	int dereferenceFlag, const llist_t *include,
++	int recurseFlags, const llist_t *include,
+ 	const llist_t *exclude, int gzip);
+ #endif /* FEATURE_TAR_CREATE */
+ 
+@@ -749,6 +748,7 @@ static llist_t *append_file_list_to_list(llist_t *list)
+ //	o	no-same-owner
+ //	p	same-permissions
+ //	k	keep-old
++//	no-recursion
+ //	numeric-owner
+ //	no-same-permissions
+ //	overwrite
+@@ -768,6 +768,7 @@ enum {
+ 	IF_FEATURE_SEAMLESS_Z(   OPTBIT_COMPRESS    ,) // 16th bit
+ 	IF_FEATURE_TAR_NOPRESERVE_TIME(OPTBIT_NOPRESERVE_TIME,)
+ #if ENABLE_FEATURE_TAR_LONG_OPTIONS
++	OPTBIT_NORECURSION,
+ 	IF_FEATURE_TAR_TO_COMMAND(OPTBIT_2COMMAND   ,)
+ 	OPTBIT_NUMERIC_OWNER,
+ 	OPTBIT_NOPRESERVE_PERM,
+@@ -791,6 +792,7 @@ 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_NORECURSION     = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NORECURSION    )) + 0, // no-recursion
+ 	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
+@@ -835,6 +837,7 @@ static const char tar_longopts[] ALIGN1 =
+ # if ENABLE_FEATURE_TAR_NOPRESERVE_TIME
+ 	"touch\0"               No_argument       "m"
+ # endif
++	"no-recursion\0"	No_argument       "\xfa"
+ # if ENABLE_FEATURE_TAR_TO_COMMAND
+ 	"to-command\0"		Required_argument "\xfb"
+ # endif
+@@ -1050,7 +1053,9 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
+ 			zipMode = 2;
+ #endif
+ 		/* NB: writeTarFile() closes tar_handle->src_fd */
+-		return writeTarFile(tar_handle->src_fd, verboseFlag, opt & OPT_DEREFERENCE,
++		return writeTarFile(tar_handle->src_fd, verboseFlag,
++				(opt & OPT_DEREFERENCE ? ACTION_FOLLOWLINKS : 0)
++				| (opt & OPT_NORECURSION ? 0 : ACTION_RECURSE),
+ 				tar_handle->accept,
+ 				tar_handle->reject, zipMode);
+ 	}
+-- 
+1.7.10
+