diff options
Diffstat (limited to 'hw/vga.c')
| -rw-r--r-- | hw/vga.c | 32 |
1 files changed, 25 insertions, 7 deletions
@@ -2390,7 +2390,7 @@ void vga_init_vbe(VGACommonState *s, MemoryRegion *system_memory) /********************************************************/ /* vga screen dump */ -int ppm_save(const char *filename, struct DisplaySurface *ds) +void ppm_save(const char *filename, struct DisplaySurface *ds, Error **errp) { FILE *f; uint8_t *d, *d1; @@ -2402,10 +2402,16 @@ int ppm_save(const char *filename, struct DisplaySurface *ds) trace_ppm_save(filename, ds); f = fopen(filename, "wb"); - if (!f) - return -1; - fprintf(f, "P6\n%d %d\n%d\n", - ds->width, ds->height, 255); + if (!f) { + error_setg(errp, "failed to open file '%s': %s", filename, + strerror(errno)); + return; + } + ret = fprintf(f, "P6\n%d %d\n%d\n", ds->width, ds->height, 255); + if (ret < 0) { + linebuf = NULL; + goto write_err; + } linebuf = g_malloc(ds->width * 3); d1 = ds->data; for(y = 0; y < ds->height; y++) { @@ -2426,12 +2432,24 @@ int ppm_save(const char *filename, struct DisplaySurface *ds) d += ds->pf.bytes_per_pixel; } d1 += ds->linesize; + clearerr(f); ret = fwrite(linebuf, 1, pbuf - linebuf, f); (void)ret; + if (ferror(f)) { + goto write_err; + } } + +out: g_free(linebuf); fclose(f); - return 0; + return; + +write_err: + error_setg(errp, "failed to write to file '%s': %s", filename, + strerror(errno)); + unlink(filename); + goto out; } /* save the vga display in a PPM image even if no display is @@ -2445,5 +2463,5 @@ static void vga_screen_dump(void *opaque, const char *filename, bool cswitch, vga_invalidate_display(s); } vga_hw_update(); - ppm_save(filename, s->ds->surface); + ppm_save(filename, s->ds->surface, errp); } |