diff options
| -rw-r--r-- | hw/g364fb.c | 52 |
1 files changed, 40 insertions, 12 deletions
diff --git a/hw/g364fb.c b/hw/g364fb.c index 498154be28..059e6220e0 100644 --- a/hw/g364fb.c +++ b/hw/g364fb.c @@ -293,7 +293,7 @@ static void g364fb_screen_dump(void *opaque, const char *filename, bool cswitch, Error **errp) { G364State *s = opaque; - int y, x; + int ret, y, x; uint8_t index; uint8_t *data_buffer; FILE *f; @@ -301,35 +301,63 @@ static void g364fb_screen_dump(void *opaque, const char *filename, bool cswitch, qemu_flush_coalesced_mmio_buffer(); if (s->depth != 8) { - error_report("g364: unknown guest depth %d", s->depth); + error_setg(errp, "g364: unknown guest depth %d", s->depth); return; } f = fopen(filename, "wb"); - if (!f) + if (!f) { + error_setg(errp, "failed to open file '%s': %s", filename, + strerror(errno)); return; + } if (s->ctla & CTLA_FORCE_BLANK) { /* blank screen */ - fprintf(f, "P4\n%d %d\n", - s->width, s->height); + ret = fprintf(f, "P4\n%d %d\n", s->width, s->height); + if (ret < 0) { + goto write_err; + } for (y = 0; y < s->height; y++) - for (x = 0; x < s->width; x++) - fputc(0, f); + for (x = 0; x < s->width; x++) { + ret = fputc(0, f); + if (ret == EOF) { + goto write_err; + } + } } else { data_buffer = s->vram + s->top_of_screen; - 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; + } for (y = 0; y < s->height; y++) for (x = 0; x < s->width; x++, data_buffer++) { index = *data_buffer; - fputc(s->color_palette[index][0], f); - fputc(s->color_palette[index][1], f); - fputc(s->color_palette[index][2], f); + ret = fputc(s->color_palette[index][0], f); + if (ret == EOF) { + goto write_err; + } + ret = fputc(s->color_palette[index][1], f); + if (ret == EOF) { + goto write_err; + } + ret = fputc(s->color_palette[index][2], f); + if (ret == EOF) { + goto write_err; + } } } +out: fclose(f); + return; + +write_err: + error_setg(errp, "failed to write to file '%s': %s", filename, + strerror(errno)); + unlink(filename); + goto out; } /* called for accesses to io ports */ |