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Wed, 27 Nov 2019 11:53:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1574855595; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=V/mcHvKX7InUGUgT0KSXWZlTMQTnyJjgwdgTbknSH9s=; b=Tys1pocZgW8Fo0Q7Endn8WR0GXAIy5TDSw9xQc0dhsRm3A+f1rLGcweIHSxlLHn9M4bFAi TQewjVEynViEgJAw2CkJA/fCehge6vn342jNVrAl9oDPy0wY6RSEqsAcJcBZA6zqG3yH46 w3rc6q7SO4+ny6SDE4sl50flfCmXMfE= From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= To: qemu-devel@nongnu.org Subject: [PATCH 5/7] screendump: replace FILE with QIOChannel and fix close()/qemu_close() Date: Wed, 27 Nov 2019 15:52:00 +0400 Message-Id: <20191127115202.375107-6-marcandre.lureau@redhat.com> In-Reply-To: <20191127115202.375107-1-marcandre.lureau@redhat.com> References: <20191127115202.375107-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-MC-Unique: svxyzO-dNQmPdcgKPyfYwA-1 X-Mimecast-Spam-Score: 0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 205.139.110.61 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paolo Bonzini , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Eduardo Habkost , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Gerd Hoffmann Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" The file opened for ppm_save() may be a /dev/fdset, in which case a dup fd is added to the fdset. It should be removed by calling qemu_close(), instead of the implicit close() on fclose(). I don't see a convenient way to solve that with stdio streams, so I switched the code to QIOChannel which uses qemu_close(). Signed-off-by: Marc-Andr=C3=A9 Lureau Reviewed-by: Daniel P. Berrang=C3=A9 --- ui/console.c | 38 +++++++++++++++++--------------------- 1 file changed, 17 insertions(+), 21 deletions(-) diff --git a/ui/console.c b/ui/console.c index 77d62fe76d..587edf4ed4 100644 --- a/ui/console.c +++ b/ui/console.c @@ -33,6 +33,7 @@ #include "chardev/char-fe.h" #include "trace.h" #include "exec/memory.h" +#include "io/channel-file.h" =20 #define DEFAULT_BACKSCROLL 512 #define CONSOLE_CURSOR_PERIOD 500 @@ -313,36 +314,31 @@ static bool ppm_save(int fd, DisplaySurface *ds, Erro= r **errp) { int width =3D pixman_image_get_width(ds->image); int height =3D pixman_image_get_height(ds->image); - FILE *f; + g_autoptr(Object) ioc =3D OBJECT(qio_channel_file_new_fd(fd)); + g_autofree char *header =3D NULL; + g_autoptr(pixman_image_t) linebuf =3D NULL; + g_autoptr(GError) error =3D NULL; int y; - int ret; - pixman_image_t *linebuf; - bool success =3D false; =20 trace_ppm_save(fd, ds); - f =3D fdopen(fd, "wb"); - ret =3D fprintf(f, "P6\n%d %d\n%d\n", width, height, 255); - if (ret < 0) { - linebuf =3D NULL; - goto end; + + header =3D g_strdup_printf("P6\n%d %d\n%d\n", width, height, 255); + if (qio_channel_write_all(QIO_CHANNEL(ioc), + header, strlen(header), errp) < 0) { + return false; } + linebuf =3D qemu_pixman_linebuf_create(PIXMAN_BE_r8g8b8, width); for (y =3D 0; y < height; y++) { qemu_pixman_linebuf_fill(linebuf, ds->image, width, 0, y); - clearerr(f); - ret =3D fwrite(pixman_image_get_data(linebuf), 1, - pixman_image_get_stride(linebuf), f); - (void)ret; - success =3D !ferror(f); + if (qio_channel_write_all(QIO_CHANNEL(ioc), + (char *)pixman_image_get_data(linebuf), + pixman_image_get_stride(linebuf), errp) = < 0) { + return false; + } } =20 -end: - if (!success) { - error_setg(errp, "failed to write to PPM file: %s", strerror(errno= )); - } - qemu_pixman_image_unref(linebuf); - fclose(f); - return success; + return true; } =20 void qmp_screendump(const char *filename, bool has_device, const char *dev= ice, --=20 2.24.0