sys_hshell.c

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/* SHELL command */

#include "../fb.h"
#include "fb_private_console.h"
#include <sys/wait.h>

int fb_hShell( char *program )
{
        int errcode;

        FB_LOCK( );
        fb_hExitConsole();
        FB_UNLOCK( );

        errcode = system( program );

        /* system() result uses same format as the status
           returned by waitpid(), or -1 on error */
        if( errcode != -1 && WIFEXITED( errcode ) ) {
                errcode = WEXITSTATUS( errcode );
                if( errcode == 127 ) {
                        /* /bin/sh could not be executed */
                        /* FIXME: can't tell difference if /bin/sh returned 127 */
                        errcode = -1;
                }
        }

        FB_LOCK( );
        fb_hInitConsole();
        FB_UNLOCK( );

        return errcode;
}