busybox: add 2 upstream fixes

[openwrt.git] / package / utils / busybox / patches / 007-upstream_zcat_no_ext_fix.patch

diff --git a/package/utils/busybox/patches/007-upstream_zcat_no_ext_fix.patch b/package/utils/busybox/patches/007-upstream_zcat_no_ext_fix.patch
new file mode 100644 (file)
index 0000000..2483800
--- /dev/null
+++ b/package/utils/busybox/patches/007-upstream_zcat_no_ext_fix.patch
@@ -0,0 +1,59 @@
+From 28dd64a0e1a9cffcde7799f2849b66c0e16bb9cc Mon Sep 17 00:00:00 2001
+From: Denys Vlasenko <vda.linux@googlemail.com>
+Date: Fri, 10 Jan 2014 14:06:57 +0100
+Subject: [PATCH] libarchive: open_zipped() does not need to check extensions
+ for e.g. gzip
+
+We only need to check for signature-less extensions,
+currently only .lzma. The rest can be happily autodetected.
+
+This fixes "zcat FILE_WITHOUT_GZ_EXT" case, among others.
+
+Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
+(cherry picked from commit 7c47b560a8fc97956dd8132bd7f1863d83c19866)
+Signed-off-by: Mike Frysinger <vapier@gentoo.org>
+---
+ archival/libarchive/open_transformer.c | 23 +++++++++++------------
+ 1 file changed, 11 insertions(+), 12 deletions(-)
+
+--- a/archival/libarchive/open_transformer.c
++++ b/archival/libarchive/open_transformer.c
+@@ -182,27 +182,26 @@ int FAST_FUNC setup_unzip_on_fd(int fd,
+ 
+ int FAST_FUNC open_zipped(const char *fname)
+ {
+-      char *sfx;
+       int fd;
+ 
+       fd = open(fname, O_RDONLY);
+       if (fd < 0)
+               return fd;
+ 
+-      sfx = strrchr(fname, '.');
+-      if (sfx) {
+-              sfx++;
+-              if (ENABLE_FEATURE_SEAMLESS_LZMA && strcmp(sfx, "lzma") == 0)
+-                      /* .lzma has no header/signature, just trust it */
++      if (ENABLE_FEATURE_SEAMLESS_LZMA) {
++              /* .lzma has no header/signature, can only detect it by extension */
++              char *sfx = strrchr(fname, '.');
++              if (sfx && strcmp(sfx+1, "lzma") == 0) {
+                       open_transformer_with_sig(fd, unpack_lzma_stream, "unlzma");
+-              else
+-              if ((ENABLE_FEATURE_SEAMLESS_GZ && strcmp(sfx, "gz") == 0)
+-               || (ENABLE_FEATURE_SEAMLESS_BZ2 && strcmp(sfx, "bz2") == 0)
+-               || (ENABLE_FEATURE_SEAMLESS_XZ && strcmp(sfx, "xz") == 0)
+-              ) {
+-                      setup_unzip_on_fd(fd, /*fail_if_not_detected:*/ 1);
++                      return fd;
+               }
+       }
++      if ((ENABLE_FEATURE_SEAMLESS_GZ)
++       || (ENABLE_FEATURE_SEAMLESS_BZ2)
++       || (ENABLE_FEATURE_SEAMLESS_XZ)
++      ) {
++              setup_unzip_on_fd(fd, /*fail_if_not_detected:*/ 1);
++      }
+ 
+       return fd;
+ }