From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50763) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gSkXw-0004ih-Cd for qemu-devel@nongnu.org; Fri, 30 Nov 2018 10:17:37 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gSkXv-0005Xo-CE for qemu-devel@nongnu.org; Fri, 30 Nov 2018 10:17:36 -0500 From: Peter Maydell Date: Fri, 30 Nov 2018 15:17:07 +0000 Message-Id: <20181130151712.2312-6-peter.maydell@linaro.org> In-Reply-To: <20181130151712.2312-1-peter.maydell@linaro.org> References: <20181130151712.2312-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PATCH 05/10] hw/i386/pc.c: Don't use load_image() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: patches@linaro.org, Stefan Hajnoczi , Eric Blake , "Daniel P . Berrange" , Li Zhijian , Philip Li , Peter Crosthwaite , Alexander Graf , Kevin Wolf , Max Reitz , "Michael S. Tsirkin" , Marcel Apfelbaum , David Gibson , Igor Mammedov , qemu-block@nongnu.org, qemu-ppc@nongnu.org The load_image() function is deprecated, as it does not let the caller specify how large the buffer to read the file into is. Use the glib g_file_get_contents() function instead, which does the whole "allocate memory for the file and read it in" operation. Signed-off-by: Peter Maydell --- hw/i386/pc.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index f095725dbab..067d23a992a 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -839,10 +839,9 @@ static void load_linux(PCMachineState *pcms, { uint16_t protocol; int setup_size, kernel_size, cmdline_size; - int64_t initrd_size = 0; int dtb_size, setup_data_offset; uint32_t initrd_max; - uint8_t header[8192], *setup, *kernel, *initrd_data; + uint8_t header[8192], *setup, *kernel; hwaddr real_addr, prot_addr, cmdline_addr, initrd_addr = 0; FILE *f; char *vmode; @@ -965,27 +964,30 @@ static void load_linux(PCMachineState *pcms, /* load initrd */ if (initrd_filename) { + gsize initrd_size; + gchar *initrd_data; + GError *gerr = NULL; + if (protocol < 0x200) { fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n"); exit(1); } - initrd_size = get_image_size(initrd_filename); - if (initrd_size < 0) { + if (!g_file_get_contents(initrd_filename, &initrd_data, + &initrd_size, &gerr)) { fprintf(stderr, "qemu: error reading initrd %s: %s\n", - initrd_filename, strerror(errno)); + initrd_filename, gerr->message); exit(1); - } else if (initrd_size >= initrd_max) { + } + if (initrd_size >= initrd_max) { fprintf(stderr, "qemu: initrd is too large, cannot support." - "(max: %"PRIu32", need %"PRId64")\n", initrd_max, initrd_size); + "(max: %"PRIu32", need %"PRId64")\n", + initrd_max, initrd_size); exit(1); } initrd_addr = (initrd_max-initrd_size) & ~4095; - initrd_data = g_malloc(initrd_size); - load_image(initrd_filename, initrd_data); - fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_addr); fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size); fw_cfg_add_bytes(fw_cfg, FW_CFG_INITRD_DATA, initrd_data, initrd_size); -- 2.19.1