Merge pull request #3601 from gufe44/helpers-redirect-restore-output-2.16

[Backport 2.16] Fix bug in redirection of unit test outputs
This commit is contained in:
Gilles Peskine 2020-08-24 10:45:11 +02:00 committed by GitHub
commit d69edda8de
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3 changed files with 37 additions and 31 deletions

View file

@ -0,0 +1,4 @@
Bugfix
* Fix bug in redirection of unit test outputs on platforms where stdout is
defined as a macro. First reported in #2311 and fix contributed in #3528.
Adopted for LTS branch 2.16 in #3601.

View file

@ -391,45 +391,52 @@ void mbedtls_param_failed( const char *failure_condition,
#endif #endif
#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) #if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
static int redirect_output( FILE** out_stream, const char* path ) static int redirect_output( FILE* out_stream, const char* path )
{ {
int stdout_fd = dup( fileno( *out_stream ) ); int out_fd, dup_fd;
FILE* path_stream;
if( stdout_fd == -1 ) out_fd = fileno( out_stream );
dup_fd = dup( out_fd );
if( dup_fd == -1 )
{ {
return -1; return( -1 );
} }
fflush( *out_stream ); path_stream = fopen( path, "w" );
fclose( *out_stream ); if( path_stream == NULL )
*out_stream = fopen( path, "w" );
if( *out_stream == NULL )
{ {
close( stdout_fd ); close( dup_fd );
return -1; return( -1 );
} }
return stdout_fd; fflush( out_stream );
if( dup2( fileno( path_stream ), out_fd ) == -1 )
{
close( dup_fd );
fclose( path_stream );
return( -1 );
}
fclose( path_stream );
return( dup_fd );
} }
static int restore_output( FILE** out_stream, int old_fd ) static int restore_output( FILE* out_stream, int dup_fd )
{ {
fflush( *out_stream ); int out_fd = fileno( out_stream );
fclose( *out_stream );
*out_stream = fdopen( old_fd, "w" ); fflush( out_stream );
if( *out_stream == NULL ) if( dup2( dup_fd, out_fd ) == -1 )
{ {
return -1; close( out_fd );
close( dup_fd );
return( -1 );
} }
return 0; close( dup_fd );
} return( 0 );
static void close_output( FILE* out_stream )
{
fclose( out_stream );
} }
#endif /* __unix__ || __APPLE__ __MACH__ */ #endif /* __unix__ || __APPLE__ __MACH__ */

View file

@ -555,7 +555,7 @@ int execute_tests( int argc , const char ** argv )
*/ */
if( !option_verbose ) if( !option_verbose )
{ {
stdout_fd = redirect_output( &stdout, "/dev/null" ); stdout_fd = redirect_output( stdout, "/dev/null" );
if( stdout_fd == -1 ) if( stdout_fd == -1 )
{ {
/* Redirection has failed with no stdout so exit */ /* Redirection has failed with no stdout so exit */
@ -575,7 +575,7 @@ int execute_tests( int argc , const char ** argv )
} }
#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) #if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
if( !option_verbose && restore_output( &stdout, stdout_fd ) ) if( !option_verbose && restore_output( stdout, stdout_fd ) )
{ {
/* Redirection has failed with no stdout so exit */ /* Redirection has failed with no stdout so exit */
exit( 1 ); exit( 1 );
@ -667,10 +667,5 @@ int execute_tests( int argc , const char ** argv )
mbedtls_memory_buffer_alloc_free(); mbedtls_memory_buffer_alloc_free();
#endif #endif
#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
if( stdout_fd != -1 )
close_output( stdout );
#endif /* __unix__ || __APPLE__ __MACH__ */
return( total_errors != 0 ); return( total_errors != 0 );
} }