From 8fdd042394b7395c13bee66afb45dd3875c60c63 Mon Sep 17 00:00:00 2001
From: graham.gower <graham.gower@e8e0d7a0-c8d9-11dd-a880-a1081c7ac358>
Date: Thu, 26 Nov 2009 20:22:10 -0500
Subject: Check the unzip child process for errors and pass the upwards. Also, avoid child from being killed by SIGPIPE.

git-svn-id: http://opkg.googlecode.com/svn/trunk@392 e8e0d7a0-c8d9-11dd-a880-a1081c7ac358
---
(limited to 'libbb/unzip.c')

diff --git a/libbb/unzip.c b/libbb/unzip.c
index 186da59..7ff07a5 100644
--- a/libbb/unzip.c
+++ b/libbb/unzip.c
@@ -46,6 +46,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <errno.h>
 #include "libbb.h"
 
 static FILE *in_file, *out_file;
@@ -149,6 +150,14 @@ static void flush_window(void)
 	}
 
 	if (fwrite(window, 1, outcnt, out_file) != outcnt) {
+		/*
+		 * The Parent process may not be interested in all the data we have,
+		 * in which case it will rudely close its end of the pipe and
+		 * wait for us to exit.
+		 */
+		if (errno == EPIPE)
+			_exit(EXIT_SUCCESS);
+
 		error_msg("Couldnt write");
 		_exit(EXIT_FAILURE);
 	}
@@ -917,6 +926,8 @@ extern int unzip(FILE *l_in_file, FILE *l_out_file)
 	}
 #endif
 
+	signal(SIGPIPE, SIG_IGN);
+
 	/* Allocate all global buffers (for DYN_ALLOC option) */
 	window = xmalloc((size_t)(((2L*WSIZE)+1L)*sizeof(unsigned char)));
 	outcnt = 0;
--
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