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fix(config-repl): conf_save_config() must use workdir/name not workdir

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load_primary_config() reads from workdir/name/conf — conf_save_config()
was writing to workdir/conf. Latent bug: would have corrupted upgrade
restart cycle once Task 11 wired the upgrade path.

Update all conf_read_current_filename, conf_get_saved_tag, and
conf_check_stale calls in the test suite to use the corrected
effective_dir (workdir/name) path structure. Add new test
test_conf_save_config_path_consistency that explicitly verifies the
written path matches what load_primary_config() reads.
This commit is contained in:
Rongsong Shen 2026-05-21 08:09:02 +00:00
parent 86fe35e671
commit 2ed7e34e25
3 changed files with 96 additions and 16 deletions
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8
src/controller/config_repl.c
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@ -231,8 +231,12 @@ int conf_read_current_filename(const char *workdir, char *out, size_t outsz)
int conf_save_config(myconf_t *myconf, const uint8_t *bytes, size_t len,
const uint8_t sha256[32])
{
/* effective_dir = workdir/name — must match load_primary_config() path */
char effective_dir[4096];
snprintf(effective_dir, sizeof(effective_dir), "%s/%s",
myconf->workdir, myconf->name);
char conf_dir[4096];
make_conf_dir(myconf->workdir, conf_dir, sizeof(conf_dir));
make_conf_dir(effective_dir, conf_dir, sizeof(conf_dir));
if (mkdir(conf_dir, 0700) != 0 && errno != EEXIST)
return -errno;
@ -303,7 +307,7 @@ int conf_save_config(myconf_t *myconf, const uint8_t *bytes, size_t len,
}
/* Step 3: trim old versions */
conf_trim_old_versions(myconf->workdir, myconf->conf_keep_n);
conf_trim_old_versions(effective_dir, myconf->conf_keep_n);
/* Update conffile to the new versioned path (heap-allocated) */
free(myconf->conffile);