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grub/grub-core/tests/video_checksum.c
Peter Jones f725fa7cb2 calloc: Use calloc() at most places 
This modifies most of the places we do some form of:

  X = malloc(Y * Z);

to use calloc(Y, Z) instead.

Among other issues, this fixes:
  - allocation of integer overflow in grub_png_decode_image_header()
    reported by Chris Coulson,
  - allocation of integer overflow in luks_recover_key()
    reported by Chris Coulson,
  - allocation of integer overflow in grub_lvm_detect()
    reported by Chris Coulson.

Fixes: CVE-2020-14308

Signed-off-by: Peter Jones <pjones@redhat.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
2020-07-29 16:55:47 +02:00

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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2013 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
/* All tests need to include test.h for GRUB testing framework. */
#include <config.h>
#include <grub/test.h>
#include <grub/dl.h>
#include <grub/video.h>
#include <grub/lib/crc.h>
#include <grub/mm.h>
#include <grub/term.h>
#ifdef GRUB_MACHINE_EMU
#include <grub/emu/hostdisk.h>
#include <grub/emu/misc.h>
#endif
GRUB_MOD_LICENSE ("GPLv3+");
static int ctr;
static int nchk;
static char *basename;
static const grub_uint32_t *checksums;
static struct grub_video_mode_info capt_mode_info;
struct grub_video_mode_info grub_test_video_modes[GRUB_TEST_VIDEO_ALL_N_MODES] = {
{
.width = 640,
.height = 480,
.pitch = 640,
.mode_type = GRUB_VIDEO_MODE_TYPE_INDEX_COLOR,
.bpp = 8,
.bytes_per_pixel = 1,
.number_of_colors = GRUB_VIDEO_FBSTD_NUMCOLORS
},
{
.width = 800,
.height = 600,
.pitch = 800,
.mode_type = GRUB_VIDEO_MODE_TYPE_INDEX_COLOR,
.bpp = 8,
.bytes_per_pixel = 1,
.number_of_colors = GRUB_VIDEO_FBSTD_NUMCOLORS
},
{
.width = 1024,
.height = 768,
.pitch = 1024,
.mode_type = GRUB_VIDEO_MODE_TYPE_INDEX_COLOR,
.bpp = 8,
.bytes_per_pixel = 1,
.number_of_colors = GRUB_VIDEO_FBSTD_NUMCOLORS
},
{
.width = 640,
.height = 480,
.pitch = 640 * 4,
GRUB_VIDEO_MI_RGBA8888()
},
{
.width = 800,
.height = 600,
.pitch = 800 * 4,
GRUB_VIDEO_MI_RGBA8888()
},
{
.width = 1024,
.height = 768,
.pitch = 1024 * 4,
GRUB_VIDEO_MI_RGBA8888()
},
{
.width = 2560,
.height = 1440,
.pitch = 2560 * 4,
GRUB_VIDEO_MI_RGBA8888()
},
{
.width = 640,
.height = 480,
.pitch = 640,
.mode_type = GRUB_VIDEO_MODE_TYPE_INDEX_COLOR,
.bpp = 8,
.bytes_per_pixel = 1,
.number_of_colors = GRUB_VIDEO_FBSTD_EXT_NUMCOLORS
},
{
.width = 800,
.height = 600,
.pitch = 800,
.mode_type = GRUB_VIDEO_MODE_TYPE_INDEX_COLOR,
.bpp = 8,
.bytes_per_pixel = 1,
.number_of_colors = GRUB_VIDEO_FBSTD_EXT_NUMCOLORS
},
{
.width = 1024,
.height = 768,
.pitch = 1024,
.mode_type = GRUB_VIDEO_MODE_TYPE_INDEX_COLOR,
.bpp = 8,
.bytes_per_pixel = 1,
.number_of_colors = GRUB_VIDEO_FBSTD_EXT_NUMCOLORS
},
{
.width = 640,
.height = 480,
.pitch = 1280,
GRUB_VIDEO_MI_RGB555 ()
},
{
.width = 800,
.height = 600,
.pitch = 1600,
GRUB_VIDEO_MI_RGB555 ()
},
{
.width = 1024,
.height = 768,
.pitch = 2048,
GRUB_VIDEO_MI_RGB555 ()
},
{
.width = 640,
.height = 480,
.pitch = 1280,
GRUB_VIDEO_MI_RGB565 ()
},
{
.width = 800,
.height = 600,
.pitch = 1600,
GRUB_VIDEO_MI_RGB565 ()
},
{
.width = 1024,
.height = 768,
.pitch = 2048,
GRUB_VIDEO_MI_RGB565 ()
},
{
.width = 640,
.height = 480,
.pitch = 640 * 3,
GRUB_VIDEO_MI_RGB888 ()
},
{
.width = 800,
.height = 600,
.pitch = 800 * 3,
GRUB_VIDEO_MI_RGB888 ()
},
{
.width = 1024,
.height = 768,
.pitch = 1024 * 3,
GRUB_VIDEO_MI_RGB888 ()
},
{
.width = 640,
.height = 480,
.pitch = 1280,
GRUB_VIDEO_MI_BGR555 ()
},
{
.width = 800,
.height = 600,
.pitch = 1600,
GRUB_VIDEO_MI_BGR555 ()
},
{
.width = 1024,
.height = 768,
.pitch = 2048,
GRUB_VIDEO_MI_BGR555 ()
},
{
.width = 640,
.height = 480,
.pitch = 1280,
GRUB_VIDEO_MI_BGR565 ()
},
{
.width = 800,
.height = 600,
.pitch = 1600,
GRUB_VIDEO_MI_BGR565 ()
},
{
.width = 1024,
.height = 768,
.pitch = 2048,
GRUB_VIDEO_MI_BGR565 ()
},
{
.width = 640,
.height = 480,
.pitch = 640 * 3,
GRUB_VIDEO_MI_BGR888 ()
},
{
.width = 800,
.height = 600,
.pitch = 800 * 3,
GRUB_VIDEO_MI_BGR888 ()
},
{
.width = 1024,
.height = 768,
.pitch = 1024 * 3,
GRUB_VIDEO_MI_BGR888 ()
},
{
.width = 640,
.height = 480,
.pitch = 640 * 4,
GRUB_VIDEO_MI_BGRA8888()
},
{
.width = 800,
.height = 600,
.pitch = 800 * 4,
GRUB_VIDEO_MI_BGRA8888()
},
{
.width = 1024,
.height = 768,
.pitch = 1024 * 4,
GRUB_VIDEO_MI_BGRA8888()
},
};
#ifdef GRUB_MACHINE_EMU
#include <grub/emu/hostfile.h>
struct bmp_header
{
grub_uint8_t magic[2];
grub_uint32_t filesize;
grub_uint32_t reserved;
grub_uint32_t bmp_off;
grub_uint32_t head_size;
grub_uint16_t width;
grub_uint16_t height;
grub_uint16_t planes;
grub_uint16_t bpp;
} GRUB_PACKED;
static void
grub_video_capture_write_bmp (const char *fname,
void *ptr,
const struct grub_video_mode_info *mode_info)
{
grub_util_fd_t fd = grub_util_fd_open (fname, GRUB_UTIL_FD_O_WRONLY | GRUB_UTIL_FD_O_CREATTRUNC);
struct bmp_header head;
if (!GRUB_UTIL_FD_IS_VALID (fd))
{
grub_printf (_("cannot open `%s': %s"),
fname, grub_util_fd_strerror ());
}
grub_memset (&head, 0, sizeof (head));
head.magic[0] = 'B';
head.magic[1] = 'M';
if (mode_info->mode_type & GRUB_VIDEO_MODE_TYPE_RGB)
{
head.filesize = grub_cpu_to_le32 (sizeof (head) + mode_info->width * mode_info->height * 3);
head.bmp_off = grub_cpu_to_le32_compile_time (sizeof (head));
head.bpp = grub_cpu_to_le16_compile_time (24);
}
else
{
head.filesize = grub_cpu_to_le32 (sizeof (head) + 3 * 256 + mode_info->width * mode_info->height);
head.bmp_off = grub_cpu_to_le32_compile_time (sizeof (head) + 3 * 256);
head.bpp = grub_cpu_to_le16_compile_time (8);
}
head.head_size = grub_cpu_to_le32_compile_time (sizeof (head) - 14);
head.width = grub_cpu_to_le16 (mode_info->width);
head.height = grub_cpu_to_le16 (mode_info->height);
head.planes = grub_cpu_to_le16_compile_time (1);
head.width = grub_cpu_to_le16 (mode_info->width);
head.height = grub_cpu_to_le16 (mode_info->height);
grub_util_fd_write (fd, (char *) &head, sizeof (head));
if (!(mode_info->mode_type & GRUB_VIDEO_MODE_TYPE_RGB))
{
struct grub_video_palette_data palette_data[256];
int i;
int palette_len = mode_info->number_of_colors;
grub_memset (palette_data, 0, sizeof (palette_data));
if (palette_len > 256)
palette_len = 256;
grub_video_get_palette (0, palette_len, palette_data);
for (i = 0; i < 256; i++)
{
grub_uint8_t r, g, b;
r = palette_data[i].r;
g = palette_data[i].g;
b = palette_data[i].b;
grub_util_fd_write (fd, (char *) &b, 1);
grub_util_fd_write (fd, (char *) &g, 1);
grub_util_fd_write (fd, (char *) &r, 1);
}
}
/* This does essentialy the same as some fbblit functions yet using
them would mean testing them against themselves so keep this
implemetation separate. */
switch (mode_info->bytes_per_pixel)
{
case 4:
{
grub_uint8_t *buffer = xcalloc (3, mode_info->width);
grub_uint32_t rmask = ((1 << mode_info->red_mask_size) - 1);
grub_uint32_t gmask = ((1 << mode_info->green_mask_size) - 1);
grub_uint32_t bmask = ((1 << mode_info->blue_mask_size) - 1);
int rshift = mode_info->red_field_pos;
int gshift = mode_info->green_field_pos;
int bshift = mode_info->blue_field_pos;
int mulrshift = (8 - mode_info->red_mask_size);
int mulgshift = (8 - mode_info->green_mask_size);
int mulbshift = (8 - mode_info->blue_mask_size);
int y;
for (y = mode_info->height - 1; y >= 0; y--)
{
grub_uint32_t *iptr = (grub_uint32_t *) ptr + (mode_info->pitch / 4) * y;
int x;
grub_uint8_t *optr = buffer;
for (x = 0; x < (int) mode_info->width; x++)
{
grub_uint32_t val = *iptr++;
*optr++ = ((val >> bshift) & bmask) << mulbshift;
*optr++ = ((val >> gshift) & gmask) << mulgshift;
*optr++ = ((val >> rshift) & rmask) << mulrshift;
}
grub_util_fd_write (fd, (char *) buffer, mode_info->width * 3);
}
grub_free (buffer);
break;
}
case 3:
{
grub_uint8_t *buffer = xcalloc (3, mode_info->width);
grub_uint32_t rmask = ((1 << mode_info->red_mask_size) - 1);
grub_uint32_t gmask = ((1 << mode_info->green_mask_size) - 1);
grub_uint32_t bmask = ((1 << mode_info->blue_mask_size) - 1);
int rshift = mode_info->red_field_pos;
int gshift = mode_info->green_field_pos;
int bshift = mode_info->blue_field_pos;
int mulrshift = (8 - mode_info->red_mask_size);
int mulgshift = (8 - mode_info->green_mask_size);
int mulbshift = (8 - mode_info->blue_mask_size);
int y;
for (y = mode_info->height - 1; y >= 0; y--)
{
grub_uint8_t *iptr = ((grub_uint8_t *) ptr + mode_info->pitch * y);
int x;
grub_uint8_t *optr = buffer;
for (x = 0; x < (int) mode_info->width; x++)
{
grub_uint32_t val = 0;
#ifdef GRUB_CPU_WORDS_BIGENDIAN
val |= *iptr++ << 16;
val |= *iptr++ << 8;
val |= *iptr++;
#else
val |= *iptr++;
val |= *iptr++ << 8;
val |= *iptr++ << 16;
#endif
*optr++ = ((val >> bshift) & bmask) << mulbshift;
*optr++ = ((val >> gshift) & gmask) << mulgshift;
*optr++ = ((val >> rshift) & rmask) << mulrshift;
}
grub_util_fd_write (fd, (char *) buffer, mode_info->width * 3);
}
grub_free (buffer);
break;
}
case 2:
{
grub_uint8_t *buffer = xcalloc (3, mode_info->width);
grub_uint16_t rmask = ((1 << mode_info->red_mask_size) - 1);
grub_uint16_t gmask = ((1 << mode_info->green_mask_size) - 1);
grub_uint16_t bmask = ((1 << mode_info->blue_mask_size) - 1);
int rshift = mode_info->red_field_pos;
int gshift = mode_info->green_field_pos;
int bshift = mode_info->blue_field_pos;
int mulrshift = (8 - mode_info->red_mask_size);
int mulgshift = (8 - mode_info->green_mask_size);
int mulbshift = (8 - mode_info->blue_mask_size);
int y;
for (y = mode_info->height - 1; y >= 0; y--)
{
grub_uint16_t *iptr = (grub_uint16_t *) ptr + (mode_info->pitch / 2) * y;
int x;
grub_uint8_t *optr = buffer;
for (x = 0; x < (int) mode_info->width; x++)
{
grub_uint16_t val = *iptr++;
*optr++ = ((val >> bshift) & bmask) << mulbshift;
*optr++ = ((val >> gshift) & gmask) << mulgshift;
*optr++ = ((val >> rshift) & rmask) << mulrshift;
}
grub_util_fd_write (fd, (char *) buffer, mode_info->width * 3);
}
grub_free (buffer);
break;
}
case 1:
{
int y;
for (y = mode_info->height - 1; y >= 0; y--)
grub_util_fd_write (fd, ((char *) ptr + mode_info->pitch * y),
mode_info->width);
break;
}
}
grub_util_fd_close (fd);
}
#endif
const char *
grub_video_checksum_get_modename (void)
{
static char buf[40];
if (capt_mode_info.mode_type & GRUB_VIDEO_MODE_TYPE_INDEX_COLOR)
{
grub_snprintf (buf, sizeof (buf), "i%d", capt_mode_info.number_of_colors);
return buf;
}
if (capt_mode_info.red_field_pos == 0)
{
grub_snprintf (buf, sizeof (buf), "bgra%d%d%d%d", capt_mode_info.blue_mask_size,
capt_mode_info.green_mask_size,
capt_mode_info.red_mask_size,
capt_mode_info.reserved_mask_size);
return buf;
}
grub_snprintf (buf, sizeof (buf), "rgba%d%d%d%d", capt_mode_info.red_mask_size,
capt_mode_info.green_mask_size,
capt_mode_info.blue_mask_size,
capt_mode_info.reserved_mask_size);
return buf;
}
#define GENERATE_MODE 1
//#define SAVE_ALL_IMAGES
//#define COLLECT_TIME_STATISTICS 1
#if defined (GENERATE_MODE) && defined (GRUB_MACHINE_EMU)
grub_util_fd_t genfd = GRUB_UTIL_FD_INVALID;
#endif
#include <grub/time.h>
static void
write_time (void)
{
#if defined (GRUB_MACHINE_EMU) && defined (COLLECT_TIME_STATISTICS)
char buf[60];
static grub_uint64_t prev;
grub_uint64_t cur;
static grub_util_fd_t tmrfd = GRUB_UTIL_FD_INVALID;
if (!GRUB_UTIL_FD_IS_VALID (tmrfd))
tmrfd = grub_util_fd_open ("time.txt", GRUB_UTIL_FD_O_WRONLY
| GRUB_UTIL_FD_O_CREATTRUNC);
cur = grub_util_get_cpu_time_ms ();
grub_snprintf (buf, sizeof (buf), "%s_%dx%dx%s:%d: %" PRIuGRUB_UINT64_T " ms\n",
basename,
capt_mode_info.width,
capt_mode_info.height,
grub_video_checksum_get_modename (), ctr,
cur - prev);
prev = cur;
if (GRUB_UTIL_FD_IS_VALID (tmrfd))
grub_util_fd_write (tmrfd, buf, grub_strlen (buf));
#endif
}
static void
checksum (void)
{
void *ptr;
grub_uint32_t crc = 0;
ptr = grub_video_capture_get_framebuffer ();
write_time ();
#ifdef GRUB_CPU_WORDS_BIGENDIAN
switch (capt_mode_info.bytes_per_pixel)
{
case 1:
crc = grub_getcrc32c (0, ptr, capt_mode_info.pitch
* capt_mode_info.height);
break;
case 2:
{
unsigned x, y, rowskip;
grub_uint8_t *iptr = ptr;
crc = 0;
rowskip = capt_mode_info.pitch - capt_mode_info.width * 2;
for (y = 0; y < capt_mode_info.height; y++)
{
for (x = 0; x < capt_mode_info.width; x++)
{
crc = grub_getcrc32c (crc, iptr + 1, 1);
crc = grub_getcrc32c (crc, iptr, 1);
iptr += 2;
}
crc = grub_getcrc32c (crc, iptr, rowskip);
iptr += rowskip;
}
break;
}
case 3:
{
unsigned x, y, rowskip;
grub_uint8_t *iptr = ptr;
crc = 0;
rowskip = capt_mode_info.pitch - capt_mode_info.width * 3;
for (y = 0; y < capt_mode_info.height; y++)
{
for (x = 0; x < capt_mode_info.width; x++)
{
crc = grub_getcrc32c (crc, iptr + 2, 1);
crc = grub_getcrc32c (crc, iptr + 1, 1);
crc = grub_getcrc32c (crc, iptr, 1);
iptr += 3;
}
crc = grub_getcrc32c (crc, iptr, rowskip);
iptr += rowskip;
}
break;
}
case 4:
{
unsigned x, y, rowskip;
grub_uint8_t *iptr = ptr;
crc = 0;
rowskip = capt_mode_info.pitch - capt_mode_info.width * 4;
for (y = 0; y < capt_mode_info.height; y++)
{
for (x = 0; x < capt_mode_info.width; x++)
{
crc = grub_getcrc32c (crc, iptr + 3, 1);
crc = grub_getcrc32c (crc, iptr + 2, 1);
crc = grub_getcrc32c (crc, iptr + 1, 1);
crc = grub_getcrc32c (crc, iptr, 1);
iptr += 4;
}
crc = grub_getcrc32c (crc, iptr, rowskip);
iptr += rowskip;
}
break;
}
}
#else
crc = grub_getcrc32c (0, ptr, capt_mode_info.pitch * capt_mode_info.height);
#endif
#if defined (GENERATE_MODE) && defined (GRUB_MACHINE_EMU)
if (GRUB_UTIL_FD_IS_VALID (genfd))
{
char buf[20];
grub_snprintf (buf, sizeof (buf), "0x%x, ", crc);
grub_util_fd_write (genfd, buf, grub_strlen (buf));
}
#endif
if (!checksums || ctr >= nchk)
{
grub_test_assert (0, "Unexpected checksum %s_%dx%dx%s:%d: 0x%x",
basename,
capt_mode_info.width,
capt_mode_info.height,
grub_video_checksum_get_modename (), ctr, crc);
}
else if (crc != checksums[ctr])
{
grub_test_assert (0, "Checksum %s_%dx%dx%s:%d failed: 0x%x vs 0x%x",
basename,
capt_mode_info.width,
capt_mode_info.height,
grub_video_checksum_get_modename (),
ctr, crc, checksums[ctr]);
}
#if !(defined (SAVE_ALL_IMAGES) && defined (GRUB_MACHINE_EMU))
else
{
write_time ();
ctr++;
return;
}
#endif
#ifdef GRUB_MACHINE_EMU
char *name = grub_xasprintf ("%s_%dx%dx%s_%d.bmp", basename,
capt_mode_info.width,
capt_mode_info.height,
grub_video_checksum_get_modename (),
ctr);
grub_video_capture_write_bmp (name, ptr, &capt_mode_info);
grub_free (name);
#endif
write_time ();
ctr++;
}
struct checksum_desc
{
const char *name;
unsigned width;
unsigned height;
unsigned mode_type;
unsigned number_of_colors;
unsigned bpp;
unsigned bytes_per_pixel;
unsigned red_field_pos;
unsigned red_mask_size;
unsigned green_field_pos;
unsigned green_mask_size;
unsigned blue_field_pos;
unsigned blue_mask_size;
unsigned reserved_field_pos;
unsigned reserved_mask_size;
const grub_uint32_t *checksums;
int nchk;
};
const struct checksum_desc checksum_table[] = {
#include "checksums.h"
};
void
grub_video_checksum (const char *basename_in)
{
unsigned i;
grub_video_get_info (&capt_mode_info);
#if defined (GENERATE_MODE) && defined (GRUB_MACHINE_EMU)
if (!GRUB_UTIL_FD_IS_VALID (genfd))
genfd = grub_util_fd_open ("checksums.h", GRUB_UTIL_FD_O_WRONLY
| GRUB_UTIL_FD_O_CREATTRUNC);
if (GRUB_UTIL_FD_IS_VALID (genfd))
{
char buf[400];
grub_snprintf (buf, sizeof (buf), "\", %d, %d, 0x%x, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d /* %dx%dx%s */, (grub_uint32_t []) { ",
capt_mode_info.width,
capt_mode_info.height,
capt_mode_info.mode_type,
capt_mode_info.number_of_colors,
capt_mode_info.bpp,
capt_mode_info.bytes_per_pixel,
capt_mode_info.red_field_pos,
capt_mode_info.red_mask_size,
capt_mode_info.green_field_pos,
capt_mode_info.green_mask_size,
capt_mode_info.blue_field_pos,
capt_mode_info.blue_mask_size,
capt_mode_info.reserved_field_pos,
capt_mode_info.reserved_mask_size,
capt_mode_info.width,
capt_mode_info.height,
grub_video_checksum_get_modename ());
grub_util_fd_write (genfd, " { \"", 5);
grub_util_fd_write (genfd, basename_in, grub_strlen (basename_in));
grub_util_fd_write (genfd, buf, grub_strlen (buf));
}
#endif
basename = grub_strdup (basename_in);
nchk = 0;
checksums = 0;
/* FIXME: optimize this. */
for (i = 0; i < ARRAY_SIZE (checksum_table); i++)
if (grub_strcmp (checksum_table[i].name, basename_in) == 0
&& capt_mode_info.width == checksum_table[i].width
&& capt_mode_info.height == checksum_table[i].height
&& capt_mode_info.mode_type == checksum_table[i].mode_type
&& capt_mode_info.number_of_colors == checksum_table[i].number_of_colors
&& capt_mode_info.bpp == checksum_table[i].bpp
&& capt_mode_info.bytes_per_pixel == checksum_table[i].bytes_per_pixel
&& capt_mode_info.red_field_pos == checksum_table[i].red_field_pos
&& capt_mode_info.red_mask_size == checksum_table[i].red_mask_size
&& capt_mode_info.green_field_pos == checksum_table[i].green_field_pos
&& capt_mode_info.green_mask_size == checksum_table[i].green_mask_size
&& capt_mode_info.blue_field_pos == checksum_table[i].blue_field_pos
&& capt_mode_info.blue_mask_size == checksum_table[i].blue_mask_size
&& capt_mode_info.reserved_field_pos == checksum_table[i].reserved_field_pos
&& capt_mode_info.reserved_mask_size == checksum_table[i].reserved_mask_size)
{
nchk = checksum_table[i].nchk;
checksums = checksum_table[i].checksums;
break;
}
ctr = 0;
grub_video_capture_refresh_cb = checksum;
}
void
grub_video_checksum_end (void)
{
#if defined (GENERATE_MODE) && defined (GRUB_MACHINE_EMU)
if (GRUB_UTIL_FD_IS_VALID (genfd))
{
char buf[40];
grub_snprintf (buf, sizeof (buf), "}, %d },\n", ctr);
grub_util_fd_write (genfd, buf, grub_strlen (buf));
}
#endif
grub_test_assert (ctr == nchk, "Not enough checksums %s_%dx%dx%s: %d vs %d",
basename,
capt_mode_info.width,
capt_mode_info.height,
grub_video_checksum_get_modename (),
ctr, nchk);
grub_free (basename);
basename = 0;
nchk = 0;
checksums = 0;
ctr = 0;
grub_video_capture_refresh_cb = 0;
}
static struct grub_term_output *saved_outputs;
static struct grub_term_output *saved_gfxnext;
static struct grub_term_output *gfxterm;
static int use_gfxterm = 0;
int
grub_test_use_gfxterm (void)
{
FOR_ACTIVE_TERM_OUTPUTS (gfxterm)
if (grub_strcmp (gfxterm->name, "gfxterm") == 0)
break;
if (!gfxterm)
FOR_DISABLED_TERM_OUTPUTS (gfxterm)
if (grub_strcmp (gfxterm->name, "gfxterm") == 0)
break;
if (!gfxterm)
{
grub_test_assert (0, "terminal `%s' isn't found", "gfxterm");
return 1;
}
if (gfxterm->init (gfxterm))
{
grub_test_assert (0, "terminal `%s' failed: %s", "gfxterm", grub_errmsg);
return 1;
}
saved_outputs = grub_term_outputs;
saved_gfxnext = gfxterm->next;
grub_term_outputs = gfxterm;
gfxterm->next = 0;
use_gfxterm = 1;
return 0;
}
void
grub_test_use_gfxterm_end (void)
{
if (!use_gfxterm)
return;
use_gfxterm = 0;
gfxterm->fini (gfxterm);
gfxterm->next = saved_gfxnext;
grub_term_outputs = saved_outputs;
saved_outputs = 0;
saved_gfxnext = 0;
}
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