fw-cfg file directory iteration code can be used by other functions that may
want to implement fw-cfg file operations. Refactor it into a smaller helper
so that it can be reused.
No functional change.
Signed-off-by: Ani Sinha <anisi...@redhat.com>
---
tests/qtest/libqos/fw_cfg.c | 62 ++++++++++++++++++++++++-------------
1 file changed, 40 insertions(+), 22 deletions(-)
diff --git a/tests/qtest/libqos/fw_cfg.c b/tests/qtest/libqos/fw_cfg.c
index 89f053ccac..b178d0b1b8 100644
--- a/tests/qtest/libqos/fw_cfg.c
+++ b/tests/qtest/libqos/fw_cfg.c
@@ -60,6 +60,38 @@ static void mm_fw_cfg_select(QFWCFG *fw_cfg, uint16_t key)
qtest_writew(fw_cfg->qts, fw_cfg->base, key);
}
+static bool
+find_pdir_entry(QFWCFG *fw_cfg, const char *filename,
+ uint16_t *sel, uint32_t *size)
+{
+ g_autofree unsigned char *filesbuf = NULL;
+ uint32_t count;
+ size_t dsize;
+ FWCfgFile *pdir_entry;
+ uint32_t i;
+ bool found = false;
+
+ *size = 0;
+ *sel = 0;
+
+ qfw_cfg_get(fw_cfg, FW_CFG_FILE_DIR, &count, sizeof(count));
+ count = be32_to_cpu(count);
+ dsize = sizeof(uint32_t) + count * sizeof(struct fw_cfg_file);
+ filesbuf = g_malloc(dsize);
+ qfw_cfg_get(fw_cfg, FW_CFG_FILE_DIR, filesbuf, dsize);
+ pdir_entry = (FWCfgFile *)(filesbuf + sizeof(uint32_t));
+ for (i = 0; i < count; ++i, ++pdir_entry) {
+ if (!strcmp(pdir_entry->name, filename)) {
+ *size = be32_to_cpu(pdir_entry->size);
+ *sel = be16_to_cpu(pdir_entry->select);
+ found = true;
+ break;
+ }
+ }
+
+ return found;
+}
+
/*
* The caller need check the return value. When the return value is
* nonzero, it means that some bytes have been transferred.
@@ -75,32 +107,18 @@ static void mm_fw_cfg_select(QFWCFG *fw_cfg, uint16_t key)
size_t qfw_cfg_get_file(QFWCFG *fw_cfg, const char *filename,
void *data, size_t buflen)
{
- uint32_t count;
- uint32_t i;
- unsigned char *filesbuf = NULL;
- size_t dsize;
- FWCfgFile *pdir_entry;
size_t filesize = 0;
+ uint32_t len;
+ uint16_t sel;
- qfw_cfg_get(fw_cfg, FW_CFG_FILE_DIR, &count, sizeof(count));
- count = be32_to_cpu(count);
- dsize = sizeof(uint32_t) + count * sizeof(struct fw_cfg_file);
- filesbuf = g_malloc(dsize);
- qfw_cfg_get(fw_cfg, FW_CFG_FILE_DIR, filesbuf, dsize);
- pdir_entry = (FWCfgFile *)(filesbuf + sizeof(uint32_t));
- for (i = 0; i < count; ++i, ++pdir_entry) {
- if (!strcmp(pdir_entry->name, filename)) {
- uint32_t len = be32_to_cpu(pdir_entry->size);
- uint16_t sel = be16_to_cpu(pdir_entry->select);
- filesize = len;
- if (len > buflen) {
- len = buflen;
- }
- qfw_cfg_get(fw_cfg, sel, data, len);
- break;
+ if (find_pdir_entry(fw_cfg, filename, &sel, &len)) {
+ filesize = len;
+ if (len > buflen) {
+ len = buflen;
}
+ qfw_cfg_get(fw_cfg, sel, data, len);
}
- g_free(filesbuf);
+
return filesize;
}
--
2.45.2
