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fix presets.json corruption, part 2: protect deletePresets

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deletePreset() also needs to acquire presetFileMux before writing.
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Frank
2025-12-29 21:02:06 +01:00
parent 76cf309373
commit d505dcc6a8
1 changed files with 8 additions and 0 deletions
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8
wled00/presets.cpp
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@@ -358,8 +358,16 @@ void savePreset(byte index, const char* pname, JsonObject sObj)
} }
void deletePreset(byte index) { void deletePreset(byte index) {
// WLEDMM Acquire file mutex before writing presets.json, to prevent presets.json corruption
if (esp32SemTake(presetFileMux, 2500) != pdTRUE) {
USER_PRINTLN(F("deletePreset(): preset file busy, cannot write"));
return; // early exit, no change
}
StaticJsonDocument<24> empty; StaticJsonDocument<24> empty;
writeObjectToFileUsingId(getFileName(), index, &empty); writeObjectToFileUsingId(getFileName(), index, &empty);
esp32SemGive(presetFileMux); // Release file mutex
presetsModifiedTime = toki.second(); //unix time presetsModifiedTime = toki.second(); //unix time
updateFSInfo(); updateFSInfo();
} }