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@ -64,6 +64,9 @@
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#include <time.h>
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#include <unistd.h>
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#include <chrono>
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#include <thread>
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extern "C" {
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#include <crypto_scrypt.h>
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}
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@ -1220,9 +1223,22 @@ static int create_crypto_blk_dev(struct crypt_mnt_ftr* crypt_ftr, const unsigned
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}
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static int delete_crypto_blk_dev(const std::string& name) {
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bool ret;
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auto& dm = DeviceMapper::Instance();
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if (!dm.DeleteDevice(name)) {
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SLOGE("Cannot remove dm-crypt device %s: %s\n", name.c_str(), strerror(errno));
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// TODO(b/149396179) there appears to be a race somewhere in the system where trying
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// to delete the device fails with EBUSY; for now, work around this by retrying.
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int tries = 5;
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while (tries-- > 0) {
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ret = dm.DeleteDevice(name);
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if (ret || errno != EBUSY) {
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break;
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}
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SLOGW("DM_DEV Cannot remove dm-crypt device %s: %s, retrying...\n", name.c_str(),
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strerror(errno));
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std::this_thread::sleep_for(std::chrono::milliseconds(100));
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}
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if (!ret) {
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SLOGE("DM_DEV Cannot remove dm-crypt device %s: %s\n", name.c_str(), strerror(errno));
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return -1;
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}
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return 0;
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