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tcx: tcx24_screen_dump(): add error handling

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Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
This commit is contained in:
Luiz Capitulino 2012-05-24 11:30:40 -03:00
parent 61a3f955c1
commit 537f2d2b0d
1 changed files with 41 additions and 9 deletions
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50
hw/tcx.c
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@ -611,12 +611,18 @@ static void tcx24_screen_dump(void *opaque, const char *filename, bool cswitch,
FILE *f;
uint8_t *d, *d1, v;
uint32_t *s24, *cptr, dval;
int y, x;
int ret, y, x;
f = fopen(filename, "wb");
if (!f)
if (!f) {
error_setg(errp, "failed to open file '%s': %s", filename,
strerror(errno));
return;
fprintf(f, "P6\n%d %d\n%d\n", s->width, s->height, 255);
}
ret = fprintf(f, "P6\n%d %d\n%d\n", s->width, s->height, 255);
if (ret < 0) {
goto write_err;
}
d1 = s->vram;
s24 = s->vram24;
cptr = s->cplane;
@ -625,20 +631,46 @@ static void tcx24_screen_dump(void *opaque, const char *filename, bool cswitch,
for(x = 0; x < s->width; x++, d++, s24++) {
if ((*cptr++ & 0xff000000) == 0x03000000) { // 24-bit direct
dval = *s24 & 0x00ffffff;
fputc((dval >> 16) & 0xff, f);
fputc((dval >> 8) & 0xff, f);
fputc(dval & 0xff, f);
ret = fputc((dval >> 16) & 0xff, f);
if (ret == EOF) {
goto write_err;
}
ret = fputc((dval >> 8) & 0xff, f);
if (ret == EOF) {
goto write_err;
}
ret = fputc(dval & 0xff, f);
if (ret == EOF) {
goto write_err;
}
} else {
v = *d;
fputc(s->r[v], f);
fputc(s->g[v], f);
fputc(s->b[v], f);
ret = fputc(s->r[v], f);
if (ret == EOF) {
goto write_err;
}
ret = fputc(s->g[v], f);
if (ret == EOF) {
goto write_err;
}
ret = fputc(s->b[v], f);
if (ret == EOF) {
goto write_err;
}
}
}
d1 += MAXX;
}
out:
fclose(f);
return;
write_err:
error_setg(errp, "failed to write to file '%s': %s", filename,
strerror(errno));
unlink(filename);
goto out;
}
static Property tcx_properties[] = {