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Fri, 21 Mar 2025 13:36:05 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1742560586; 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=I5png6mRhUjk0lWJHeFGNHtdk7qrk3Iy9ijmwQrlhyA=; b=Lv7K9kJwoGRjVTRpV6Glm7nEf+qJAySHEk0kshg/KfO/g6N0Ektxg/1f13bYSTCRHTnlyL og4dKsPXsciafN43ljaq7Cqrj+fNV5CCPoCakG38S1+364jHuoxrV2AoHNKxaHojZtIC0+ UDoVIR/QpTdLF8CPZreQsRWnRXDhpYs= X-MC-Unique: 3ZarA2LfOlS6pJPSJTzLuQ-1 X-Mimecast-MFC-AGG-ID: 3ZarA2LfOlS6pJPSJTzLuQ_1742560573 From: Gerd Hoffmann To: qemu-devel@nongnu.org Cc: Daniel Henrique Barboza , Kashyap Chamarthy , Weiwei Li , Bibo Mao , Jiaxun Yang , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Paolo Bonzini , Palmer Dabbelt , qemu-riscv@nongnu.org, Gerd Hoffmann , Alistair Francis , Liu Zhiwei , Song Gao , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= Subject: [PULL 2/6] hw/uefi: fix error handling in uefi_vars_json_save Date: Fri, 21 Mar 2025 13:36:00 +0100 Message-ID: <20250321123604.2126923-3-kraxel@redhat.com> In-Reply-To: <20250321123604.2126923-1-kraxel@redhat.com> References: <20250321123604.2126923-1-kraxel@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; 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Return on errors. Use autoptr for the GString to simplify cleanup. Reviewed-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Gerd Hoffmann Message-ID: <20250319141159.1461621-3-kraxel@redhat.com> --- hw/uefi/var-service-json.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/hw/uefi/var-service-json.c b/hw/uefi/var-service-json.c index 761082c11fc1..f1c20a6b8c1e 100644 --- a/hw/uefi/var-service-json.c +++ b/hw/uefi/var-service-json.c @@ -178,7 +178,7 @@ void uefi_vars_json_init(uefi_vars_state *uv, Error **e= rrp) =20 void uefi_vars_json_save(uefi_vars_state *uv) { - GString *gstr; + g_autoptr(GString) gstr =3D NULL; int rc; =20 if (uv->jsonfd =3D=3D -1) { @@ -187,18 +187,25 @@ void uefi_vars_json_save(uefi_vars_state *uv) =20 gstr =3D uefi_vars_to_json(uv); =20 - lseek(uv->jsonfd, 0, SEEK_SET); + rc =3D lseek(uv->jsonfd, 0, SEEK_SET); + if (rc < 0) { + warn_report("%s: lseek error", __func__); + return; + } + rc =3D ftruncate(uv->jsonfd, 0); if (rc !=3D 0) { warn_report("%s: ftruncate error", __func__); + return; } + rc =3D write(uv->jsonfd, gstr->str, gstr->len); if (rc !=3D gstr->len) { warn_report("%s: write error", __func__); + return; } + fsync(uv->jsonfd); - - g_string_free(gstr, true); } =20 void uefi_vars_json_load(uefi_vars_state *uv, Error **errp) --=20 2.49.0