diff options
author | Peter Maydell <peter.maydell@linaro.org> | 2020-07-22 12:42:25 +0100 |
---|---|---|
committer | Peter Maydell <peter.maydell@linaro.org> | 2020-07-22 12:42:25 +0100 |
commit | d0cc248164961a7ba9d43806feffd76f9f6d7f41 (patch) | |
tree | 9073d60dc8b5572ca9610a6d050e9df7c20a20ef | |
parent | 3cbc8970f55c87cb58699b6dc8fe42998bc79dc0 (diff) | |
parent | 077195187b47d83418e5fb521c89d7881fab3049 (diff) |
Merge remote-tracking branch 'remotes/philmd-gitlab/tags/fw_cfg-20200721' into staging
fw_cfg patches
Fixes the DEADCODE issue reported by Coverity (CID 1430396).
CI jobs result:
. https://gitlab.com/philmd/qemu/-/pipelines/169086301
# gpg: Signature made Tue 21 Jul 2020 18:52:46 BST
# gpg: using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [full]
# Primary key fingerprint: FAAB E75E 1291 7221 DCFD 6BB2 E3E3 2C2C DEAD C0DE
* remotes/philmd-gitlab/tags/fw_cfg-20200721:
hw/nvram/fw_cfg: Let fw_cfg_add_from_generator() return boolean value
hw/nvram/fw_cfg: Simplify fw_cfg_add_from_generator() error propagation
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r-- | hw/nvram/fw_cfg.c | 13 | ||||
-rw-r--r-- | include/hw/nvram/fw_cfg.h | 8 | ||||
-rw-r--r-- | softmmu/vl.c | 6 |
3 files changed, 14 insertions, 13 deletions
diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c index 3b1811d3bf..f3a4728288 100644 --- a/hw/nvram/fw_cfg.c +++ b/hw/nvram/fw_cfg.c @@ -1032,10 +1032,9 @@ void *fw_cfg_modify_file(FWCfgState *s, const char *filename, return NULL; } -void fw_cfg_add_from_generator(FWCfgState *s, const char *filename, +bool fw_cfg_add_from_generator(FWCfgState *s, const char *filename, const char *gen_id, Error **errp) { - ERRP_GUARD(); FWCfgDataGeneratorClass *klass; GByteArray *array; Object *obj; @@ -1044,20 +1043,22 @@ void fw_cfg_add_from_generator(FWCfgState *s, const char *filename, obj = object_resolve_path_component(object_get_objects_root(), gen_id); if (!obj) { error_setg(errp, "Cannot find object ID '%s'", gen_id); - return; + return false; } if (!object_dynamic_cast(obj, TYPE_FW_CFG_DATA_GENERATOR_INTERFACE)) { error_setg(errp, "Object ID '%s' is not a '%s' subclass", gen_id, TYPE_FW_CFG_DATA_GENERATOR_INTERFACE); - return; + return false; } klass = FW_CFG_DATA_GENERATOR_GET_CLASS(obj); array = klass->get_data(obj, errp); - if (*errp) { - return; + if (!array) { + return false; } size = array->len; fw_cfg_add_file(s, filename, g_byte_array_free(array, TRUE), size); + + return true; } static void fw_cfg_machine_reset(void *opaque) diff --git a/include/hw/nvram/fw_cfg.h b/include/hw/nvram/fw_cfg.h index 11feae3177..f190c428e8 100644 --- a/include/hw/nvram/fw_cfg.h +++ b/include/hw/nvram/fw_cfg.h @@ -32,7 +32,9 @@ typedef struct FWCfgDataGeneratorClass { * @obj: the object implementing this interface * @errp: pointer to a NULL-initialized error object * - * Returns: reference to a byte array containing the data. + * Returns: reference to a byte array containing the data on success, + * or NULL on error. + * * The caller should release the reference when no longer * required. */ @@ -302,8 +304,10 @@ void *fw_cfg_modify_file(FWCfgState *s, const char *filename, void *data, * will be used; also, a new entry will be added to the file directory * structure residing at key value FW_CFG_FILE_DIR, containing the item name, * data size, and assigned selector key value. + * + * Returns: %true on success, %false on error. */ -void fw_cfg_add_from_generator(FWCfgState *s, const char *filename, +bool fw_cfg_add_from_generator(FWCfgState *s, const char *filename, const char *gen_id, Error **errp); FWCfgState *fw_cfg_init_io_dma(uint32_t iobase, uint32_t dma_iobase, diff --git a/softmmu/vl.c b/softmmu/vl.c index f476ef89ed..3416241557 100644 --- a/softmmu/vl.c +++ b/softmmu/vl.c @@ -2070,11 +2070,7 @@ static int parse_fw_cfg(void *opaque, QemuOpts *opts, Error **errp) size = strlen(str); /* NUL terminator NOT included in fw_cfg blob */ buf = g_memdup(str, size); } else if (nonempty_str(gen_id)) { - Error *local_err = NULL; - - fw_cfg_add_from_generator(fw_cfg, name, gen_id, errp); - if (local_err) { - error_propagate(errp, local_err); + if (!fw_cfg_add_from_generator(fw_cfg, name, gen_id, errp)) { return -1; } return 0; |