From: Ian Romanick Date: Fri, 26 Mar 2004 02:02:48 +0000 (+0000) Subject: Make sure drivers don't dereference a NULL pointer if X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3623579e43b4c3a8d2eb7edb6efaa6f178279ec9;p=mesa.git Make sure drivers don't dereference a NULL pointer if __driUtilCreateNewScreen returns NULL. --- diff --git a/src/mesa/drivers/dri/i810/i810screen.c b/src/mesa/drivers/dri/i810/i810screen.c index 232f62d41d8..a095b28add1 100644 --- a/src/mesa/drivers/dri/i810/i810screen.c +++ b/src/mesa/drivers/dri/i810/i810screen.c @@ -439,14 +439,14 @@ void * __driCreateNewScreen( Display *dpy, int scrn, __DRIscreen *psc, ddx_version, dri_version, drm_version, frame_buffer, pSAREA, fd, internal_api_version, &i810API); - - - create_context_modes = - (PFNGLXCREATECONTEXTMODES) glXGetProcAddress( (const GLubyte *) "__glXCreateContextModes" ); - if ( create_context_modes != NULL ) { - *driver_modes = i810FillInModes( 16, - 16, 0, - 1); + if ( psp != NULL ) { + create_context_modes = (PFNGLXCREATECONTEXTMODES) + glXGetProcAddress( (const GLubyte *) "__glXCreateContextModes" ); + if ( create_context_modes != NULL ) { + *driver_modes = i810FillInModes( 16, + 16, 0, + 1); + } } return (void *) psp; diff --git a/src/mesa/drivers/dri/mach64/mach64_screen.c b/src/mesa/drivers/dri/mach64/mach64_screen.c index fa1c1515433..6ef16c11b27 100644 --- a/src/mesa/drivers/dri/mach64/mach64_screen.c +++ b/src/mesa/drivers/dri/mach64/mach64_screen.c @@ -538,16 +538,16 @@ void * __driCreateNewScreen( Display *dpy, int scrn, __DRIscreen *psc, ddx_version, dri_version, drm_version, frame_buffer, pSAREA, fd, internal_api_version, &mach64API); - - - create_context_modes = - (PFNGLXCREATECONTEXTMODES) glXGetProcAddress( (const GLubyte *) "__glXCreateContextModes" ); - if ( create_context_modes != NULL ) { - ATIDRIPtr dri_priv = (ATIDRIPtr) psp->pDevPriv; - *driver_modes = mach64FillInModes( dri_priv->cpp * 8, - 16, - 0, - 1); + if ( psp != NULL ) { + create_context_modes = (PFNGLXCREATECONTEXTMODES) + glXGetProcAddress( (const GLubyte *) "__glXCreateContextModes" ); + if ( create_context_modes != NULL ) { + ATIDRIPtr dri_priv = (ATIDRIPtr) psp->pDevPriv; + *driver_modes = mach64FillInModes( dri_priv->cpp * 8, + 16, + 0, + 1); + } } return (void *) psp; diff --git a/src/mesa/drivers/dri/mga/mga_xmesa.c b/src/mesa/drivers/dri/mga/mga_xmesa.c index 3b65e7a40c3..f0fe8d2c049 100644 --- a/src/mesa/drivers/dri/mga/mga_xmesa.c +++ b/src/mesa/drivers/dri/mga/mga_xmesa.c @@ -967,16 +967,16 @@ void * __driCreateNewScreen( Display *dpy, int scrn, __DRIscreen *psc, ddx_version, dri_version, drm_version, frame_buffer, pSAREA, fd, internal_api_version, &mgaAPI); - - - create_context_modes = - (PFNGLXCREATECONTEXTMODES) glXGetProcAddress( (const GLubyte *) "__glXCreateContextModes" ); - if ( create_context_modes != NULL ) { - MGADRIPtr dri_priv = (MGADRIPtr) psp->pDevPriv; - *driver_modes = mgaFillInModes( dri_priv->cpp * 8, - (dri_priv->cpp == 2) ? 16 : 24, - (dri_priv->cpp == 2) ? 0 : 8, - (dri_priv->backOffset != dri_priv->depthOffset) ); + if ( psp != NULL ) { + create_context_modes = (PFNGLXCREATECONTEXTMODES) + glXGetProcAddress( (const GLubyte *) "__glXCreateContextModes" ); + if ( create_context_modes != NULL ) { + MGADRIPtr dri_priv = (MGADRIPtr) psp->pDevPriv; + *driver_modes = mgaFillInModes( dri_priv->cpp * 8, + (dri_priv->cpp == 2) ? 16 : 24, + (dri_priv->cpp == 2) ? 0 : 8, + (dri_priv->backOffset != dri_priv->depthOffset) ); + } } return (void *) psp; diff --git a/src/mesa/drivers/dri/r200/r200_screen.c b/src/mesa/drivers/dri/r200/r200_screen.c index 45683d8143b..e356309ae10 100644 --- a/src/mesa/drivers/dri/r200/r200_screen.c +++ b/src/mesa/drivers/dri/r200/r200_screen.c @@ -640,16 +640,16 @@ void * __driCreateNewScreen( Display *dpy, int scrn, __DRIscreen *psc, ddx_version, dri_version, drm_version, frame_buffer, pSAREA, fd, internal_api_version, &r200API); - - - create_context_modes = - (PFNGLXCREATECONTEXTMODES) glXGetProcAddress( (const GLubyte *) "__glXCreateContextModes" ); - if ( create_context_modes != NULL ) { - RADEONDRIPtr dri_priv = (RADEONDRIPtr) psp->pDevPriv; - *driver_modes = r200FillInModes( dri_priv->bpp, - (dri_priv->bpp == 16) ? 16 : 24, - (dri_priv->bpp == 16) ? 0 : 8, - (dri_priv->backOffset != dri_priv->depthOffset) ); + if ( psp != NULL ) { + create_context_modes = (PFNGLXCREATECONTEXTMODES) + glXGetProcAddress( (const GLubyte *) "__glXCreateContextModes" ); + if ( create_context_modes != NULL ) { + RADEONDRIPtr dri_priv = (RADEONDRIPtr) psp->pDevPriv; + *driver_modes = r200FillInModes( dri_priv->bpp, + (dri_priv->bpp == 16) ? 16 : 24, + (dri_priv->bpp == 16) ? 0 : 8, + (dri_priv->backOffset != dri_priv->depthOffset) ); + } } return (void *) psp; diff --git a/src/mesa/drivers/dri/radeon/radeon_screen.c b/src/mesa/drivers/dri/radeon/radeon_screen.c index c3ddb994864..8d26935e6be 100644 --- a/src/mesa/drivers/dri/radeon/radeon_screen.c +++ b/src/mesa/drivers/dri/radeon/radeon_screen.c @@ -602,16 +602,16 @@ void * __driCreateNewScreen( Display *dpy, int scrn, __DRIscreen *psc, ddx_version, dri_version, drm_version, frame_buffer, pSAREA, fd, internal_api_version, &radeonAPI); - - - create_context_modes = - (PFNGLXCREATECONTEXTMODES) glXGetProcAddress( (const GLubyte *) "__glXCreateContextModes" ); - if ( create_context_modes != NULL ) { - RADEONDRIPtr dri_priv = (RADEONDRIPtr) psp->pDevPriv; - *driver_modes = radeonFillInModes( dri_priv->bpp, - (dri_priv->bpp == 16) ? 16 : 24, - (dri_priv->bpp == 16) ? 0 : 8, - (dri_priv->backOffset != dri_priv->depthOffset) ); + if ( psp != NULL ) { + create_context_modes = (PFNGLXCREATECONTEXTMODES) + glXGetProcAddress( (const GLubyte *) "__glXCreateContextModes" ); + if ( create_context_modes != NULL ) { + RADEONDRIPtr dri_priv = (RADEONDRIPtr) psp->pDevPriv; + *driver_modes = radeonFillInModes( dri_priv->bpp, + (dri_priv->bpp == 16) ? 16 : 24, + (dri_priv->bpp == 16) ? 0 : 8, + (dri_priv->backOffset != dri_priv->depthOffset) ); + } } return (void *) psp;