check alloc

[dos_imgv] / imago / src / filergbe.c

diff --git a/imago/src/filergbe.c b/imago/src/filergbe.c
index 488f1ad..7b24287 100644 (file)
--- a/imago/src/filergbe.c
+++ b/imago/src/filergbe.c
@@ -232,24 +232,24 @@ static int rgbe_write_header(struct img_io *io, int width, int height, rgbe_head
        }
        buf = malloc(ptypelen > 120 ? ptypelen + 8 : 128);
        sprintf(buf, "#?%s\n", programtype);
-       if(io->write(buf, strlen(buf), io->uptr) < 0)
+       if(io->write(buf, strlen(buf), io->uptr) <= 0)
                goto err;
        /* The #? is to identify file type, the programtype is optional. */
        if(info && (info->valid & RGBE_VALID_GAMMA)) {
                sprintf(buf, "GAMMA=%g\n", info->gamma);
-               if(io->write(buf, strlen(buf), io->uptr) < 0)
+               if(io->write(buf, strlen(buf), io->uptr) <= 0)
                        goto err;
        }
        if(info && (info->valid & RGBE_VALID_EXPOSURE)) {
                sprintf(buf, "EXPOSURE=%g\n", info->exposure);
-               if(io->write(buf, strlen(buf), io->uptr) < 0)
+               if(io->write(buf, strlen(buf), io->uptr) <= 0)
                        goto err;
        }
        strcpy(buf, "FORMAT=32-bit_rle_rgbe\n\n");
-       if(io->write(buf, strlen(buf), io->uptr) < 0)
+       if(io->write(buf, strlen(buf), io->uptr) <= 0)
                goto err;
        sprintf(buf, "-Y %d +X %d\n", height, width);
-       if(io->write(buf, strlen(buf), io->uptr) < 0)
+       if(io->write(buf, strlen(buf), io->uptr) <= 0)
                goto err;
 
        free(buf);