Adding upstream version 0.4.upstream/0.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 31 insertions, 22 deletions

diff --git a/main.c b/main.c
index 9f4c739..9b4241d 100644
--- a/main.c
+++ b/main.c
@@ -1,4 +1,4 @@
-/*  Xlunzip - Test tool for the lunzip linux module
+/*  Xlunzip - Test tool for the lzip_decompress linux module
     Copyright (C) 2016-2018 Antonio Diaz Diaz.
 
     This program is free software: you can redistribute it and/or modify
@@ -79,8 +79,10 @@ const struct { const char * from; const char * to; } known_extensions[] = {
   { ".tlz", ".tar" },
   { 0,      0      } };
 
-char * output_filename = 0;
 int infd = -1;			/* needed by the fill function */
+/* Variables used in signal handler context.
+   They are not declared volatile because the handler never returns. */
+char * output_filename = 0;
 int outfd = -1;
 bool delete_output_on_interrupt = false;
 
@@ -283,7 +285,7 @@ static int open_instream( const char * const name, struct stat * const in_statsp
         fprintf( stderr, "%s: Input file '%s' is not a regular file%s.\n",
                  program_name, name,
                  ( can_read && !no_ofile ) ?
-                 ",\n        and '--stdout' was not specified" : "" );
+                 ",\n         and '--stdout' was not specified" : "" );
       close( infd );
       infd = -1;
       }
@@ -315,8 +317,17 @@ static bool open_outstream( const bool force, const bool from_stdin )
   }
 
 
+static void set_signals( void (*action)(int) )
+  {
+  signal( SIGHUP, action );
+  signal( SIGINT, action );
+  signal( SIGTERM, action );
+  }
+
+
 void cleanup_and_fail( const int retval )
   {
+  set_signals( SIG_IGN );			/* ignore signals */
   if( delete_output_on_interrupt )
     {
     delete_output_on_interrupt = false;
@@ -331,6 +342,14 @@ void cleanup_and_fail( const int retval )
   }
 
 
+void signal_handler( int sig )
+  {
+  if( sig ) {}				/* keep compiler happy */
+  show_error( "Control-C or similar caught, quitting.", 0, false );
+  cleanup_and_fail( 1 );
+  }
+
+
      /* Set permissions, owner and times. */
 static void close_and_set_permissions( const struct stat * const in_statsp )
   {
@@ -416,7 +435,7 @@ long flush( void * buf, unsigned long size )
   return sz;
   }
 
-const char * global_name;
+const char * global_name;		/* copy of filename for 'error' */
 static void error(char *x) { show_file_error( global_name, x, 0 ); }
 
 
@@ -471,22 +490,6 @@ static int decompress( struct Pretty_print * const pp, const long cl_insize,
   }
 
 
-void signal_handler( int sig )
-  {
-  if( sig ) {}				/* keep compiler happy */
-  show_error( "Control-C or similar caught, quitting.", 0, false );
-  cleanup_and_fail( 1 );
-  }
-
-
-static void set_signals( void )
-  {
-  signal( SIGHUP, signal_handler );
-  signal( SIGINT, signal_handler );
-  signal( SIGTERM, signal_handler );
-  }
-
-
 void show_error( const char * const msg, const int errcode, const bool help )
   {
   if( verbosity < 0 ) return;
@@ -619,7 +622,7 @@ int main( const int argc, const char * const argv[] )
 
   if( !to_stdout && !testing &&
       ( filenames_given || default_output_filename[0] ) )
-    set_signals();
+    set_signals( signal_handler );
 
   Pp_init( &pp, filenames, num_filenames );
 
@@ -690,6 +693,13 @@ int main( const int argc, const char * const argv[] )
       tmp = decompress_in_place( infd, &pp, testing );
     else
       tmp = decompress( &pp, cl_insize, cl_outsize, nofill, noflush, testing );
+    if( close( infd ) != 0 )
+      {
+      show_error( input_filename[0] ? "Error closing input file" :
+                                      "Error closing stdin", errno, false );
+      if( tmp < 1 ) tmp = 1;
+      }
+    infd = -1;
     if( tmp > retval ) retval = tmp;
     if( tmp )
       { if( !testing ) cleanup_and_fail( retval );
@@ -699,7 +709,6 @@ int main( const int argc, const char * const argv[] )
       close_and_set_permissions( in_statsp );
     if( input_filename[0] )
       {
-      close( infd ); infd = -1;
       if( !keep_input_files && !to_stdout && !testing )
         remove( input_filename );
       }