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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::22f; envelope-from=gregorhaas1997@gmail.com; helo=mail-oi1-x22f.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1719539517317100001 Content-Type: text/plain; charset="utf-8" The read() syscall is not guaranteed to return all data from a file. The default ROM loader implementation currently does not take this into account, instead failing if all bytes are not read at once. This change loads the ROM using load_image_size() instead, which correctly reads all data using multiple calls to read(). Also, the ROM size is now determined using the get_image_size() function rather than using manual lseek(). Signed-off-by: Gregor Haas Reviewed-by: Xingtao Yao --- hw/core/loader.c | 17 ++--------------- 1 file changed, 2 insertions(+), 15 deletions(-) diff --git a/hw/core/loader.c b/hw/core/loader.c index 2f8105d7de..c2c61158f1 100644 --- a/hw/core/loader.c +++ b/hw/core/loader.c @@ -1076,7 +1076,6 @@ ssize_t rom_add_file(const char *file, const char *fw= _dir, MachineClass *mc =3D MACHINE_GET_CLASS(qdev_get_machine()); Rom *rom; ssize_t rc; - int fd =3D -1; char devpath[100]; =20 if (as && mr) { @@ -1094,19 +1093,12 @@ ssize_t rom_add_file(const char *file, const char *= fw_dir, rom->path =3D g_strdup(file); } =20 - fd =3D open(rom->path, O_RDONLY | O_BINARY); - if (fd =3D=3D -1) { - fprintf(stderr, "Could not open option rom '%s': %s\n", - rom->path, strerror(errno)); - goto err; - } - if (fw_dir) { rom->fw_dir =3D g_strdup(fw_dir); rom->fw_file =3D g_strdup(file); } rom->addr =3D addr; - rom->romsize =3D lseek(fd, 0, SEEK_END); + rom->romsize =3D get_image_size(rom->path); if (rom->romsize =3D=3D -1) { fprintf(stderr, "rom: file %-20s: get size error: %s\n", rom->name, strerror(errno)); @@ -1115,14 +1107,12 @@ ssize_t rom_add_file(const char *file, const char *= fw_dir, =20 rom->datasize =3D rom->romsize; rom->data =3D g_malloc0(rom->datasize); - lseek(fd, 0, SEEK_SET); - rc =3D read(fd, rom->data, rom->datasize); + rc =3D load_image_size(rom->path, rom->data, rom->datasize); if (rc !=3D rom->datasize) { fprintf(stderr, "rom: file %-20s: read error: rc=3D%zd (expected %= zd)\n", rom->name, rc, rom->datasize); goto err; } - close(fd); rom_insert(rom); if (rom->fw_file && fw_cfg) { const char *basename; @@ -1159,9 +1149,6 @@ ssize_t rom_add_file(const char *file, const char *fw= _dir, return 0; =20 err: - if (fd !=3D -1) - close(fd); - rom_free(rom); return -1; } --=20 2.45.2