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* [scarthgap][PATCH] bzip2: fix 'bzip2 --version > /tmp/aaa 2>&1' hang
@ 2026-07-16  8:54 Jaipaul Cheernam
  2026-07-23  8:46 ` [OE-core] " Yoann Congal
  2026-07-23  9:26 ` [scarthgap][PATCH v2] " Jaipaul Cheernam
  0 siblings, 2 replies; 3+ messages in thread
From: Jaipaul Cheernam @ 2026-07-16  8:54 UTC (permalink / raw)
  To: openembedded-core

From: Hongxu Jia <hongxu.jia@windriver.com>

According to [1]

As of the current version 1.0.8, bzip2 --version will print version
info but it will also continue compressing stdin:

  $ ./bzip2 --version
  bzip2, a block-sorting file compressor.  Version 1.0.8, 13-Jul-2019.

     Copyright (C) 1996-2019 by Julian Seward.

     This program is free software; [...]

  bzip2: I won't write compressed data to a terminal.
  bzip2: For help, type: `bzip2 --help'.

Debian (and its downstreams like Ubuntu) will patch this out [2],
making the < /dev/null unnecessary, port a part of debian patch
to fix the issue

[1] https://stackoverflow.com/questions/59757176/why-using-dev-null-with-a-program-like-bzip2
[2] https://sources.debian.org/src/bzip2/1.0.8-6/debian/patches/20-legacy.patch/

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit ae4fe4263ba9d372f9b9e80df4ec4697b51c1f9b)
Signed-off-by: Jaipaul Cheernam <jaipaul.cheernam@est.tech>
---
 ...-fix-bzip2-version-tmp-aaa-will-hang.patch | 62 +++++++++++++++++++
 meta/recipes-extended/bzip2/bzip2_1.0.8.bb    |  1 +
 2 files changed, 63 insertions(+)
 create mode 100644 meta/recipes-extended/bzip2/bzip2/0001-fix-bzip2-version-tmp-aaa-will-hang.patch

diff --git a/meta/recipes-extended/bzip2/bzip2/0001-fix-bzip2-version-tmp-aaa-will-hang.patch b/meta/recipes-extended/bzip2/bzip2/0001-fix-bzip2-version-tmp-aaa-will-hang.patch
new file mode 100644
index 0000000000..84206b2a4d
--- /dev/null
+++ b/meta/recipes-extended/bzip2/bzip2/0001-fix-bzip2-version-tmp-aaa-will-hang.patch
@@ -0,0 +1,62 @@
+From a9dd6acbaca836fc4e943e69a31b2e7acda32045 Mon Sep 17 00:00:00 2001
+From: Hongxu Jia <hongxu.jia@windriver.com>
+Date: Wed, 13 Nov 2024 19:49:23 +0800
+Subject: [PATCH] fix 'bzip2 --version > /tmp/aaa 2>&1' hang
+
+According to [1]
+
+As of the current version 1.0.8, bzip2 --version will print version
+info but it will also continue compressing stdin:
+
+  $ ./bzip2 --version
+  bzip2, a block-sorting file compressor.  Version 1.0.8, 13-Jul-2019.
+  
+     Copyright (C) 1996-2019 by Julian Seward.
+  
+     This program is free software; [...]
+  
+  bzip2: I won't write compressed data to a terminal.
+  bzip2: For help, type: `bzip2 --help'.
+
+Debian (and its downstreams like Ubuntu) will patch this out [2],
+making the < /dev/null unnecessary:
+
+[1] https://stackoverflow.com/questions/59757176/why-using-dev-null-with-a-program-like-bzip2
+[2] https://sources.debian.org/src/bzip2/1.0.8-6/debian/patches/20-legacy.patch/
+
+Upstream-Status: Submitted [bzip2-devel@sourceware.org]
+
+Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
+---
+ bzip2.c | 8 +++++---
+ 1 file changed, 5 insertions(+), 3 deletions(-)
+
+diff --git a/bzip2.c b/bzip2.c
+index d95d280..6ec9871 100644
+--- a/bzip2.c
++++ b/bzip2.c
+@@ -1890,7 +1890,9 @@ IntNative main ( IntNative argc, Char *argv[] )
+                case '8': blockSize100k    = 8; break;
+                case '9': blockSize100k    = 9; break;
+                case 'V':
+-               case 'L': license();            break;
++               case 'L': license();
++                         exit ( 0 );
++                         break;
+                case 'v': verbosity++; break;
+                case 'h': usage ( progName );
+                          exit ( 0 );
+@@ -1916,8 +1918,8 @@ IntNative main ( IntNative argc, Char *argv[] )
+       if (ISFLAG("--keep"))              keepInputFiles   = True;    else
+       if (ISFLAG("--small"))             smallMode        = True;    else
+       if (ISFLAG("--quiet"))             noisy            = False;   else
+-      if (ISFLAG("--version"))           license();                  else
+-      if (ISFLAG("--license"))           license();                  else
++      if (ISFLAG("--version"))           { license(); exit ( 0 ); }  else
++      if (ISFLAG("--license"))           { license(); exit ( 0 ); }  else
+       if (ISFLAG("--exponential"))       workFactor = 1;             else 
+       if (ISFLAG("--repetitive-best"))   redundant(aa->name);        else
+       if (ISFLAG("--repetitive-fast"))   redundant(aa->name);        else
+-- 
+2.34.1
+
diff --git a/meta/recipes-extended/bzip2/bzip2_1.0.8.bb b/meta/recipes-extended/bzip2/bzip2_1.0.8.bb
index f922490868..fa205edbb0 100644
--- a/meta/recipes-extended/bzip2/bzip2_1.0.8.bb
+++ b/meta/recipes-extended/bzip2/bzip2_1.0.8.bb
@@ -26,6 +26,7 @@ SRC_URI = "https://sourceware.org/pub/${BPN}/${BPN}-${PV}.tar.gz \
            file://configure.ac;subdir=${BP} \
            file://Makefile.am;subdir=${BP} \
            file://run-ptest \
+           file://0001-fix-bzip2-version-tmp-aaa-will-hang.patch;subdir=${BP} \
            "
 SRC_URI[md5sum] = "67e051268d0c475ea773822f7500d0e5"
 SRC_URI[sha256sum] = "ab5a03176ee106d3f0fa90e381da478ddae405918153cca248e682cd0c4a2269"


^ permalink raw reply related	[flat|nested] 3+ messages in thread
end of thread, other threads:[~2026-07-23  9:26 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2026-07-16  8:54 [scarthgap][PATCH] bzip2: fix 'bzip2 --version > /tmp/aaa 2>&1' hang Jaipaul Cheernam
2026-07-23  8:46 ` [OE-core] " Yoann Congal
2026-07-23  9:26 ` [scarthgap][PATCH v2] " Jaipaul Cheernam

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