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/** |
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* This file is part of the CernVM File System. |
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*/ |
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#include "cmd_transaction.h" |
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#include <errno.h> |
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#include <ctime> |
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#include <string> |
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#include <vector> |
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#include "publish/cmd_util.h" |
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#include "publish/except.h" |
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#include "publish/repository.h" |
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#include "publish/settings.h" |
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#include "util/logging.h" |
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#include "util/posix.h" |
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#include "util/string.h" |
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#include "whitelist.h" |
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namespace publish { |
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int CmdTransaction::Main(const Options &options) { |
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// Repository name and lease path are submitted as a single argument |
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// for historical reasons |
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std::string fqrn; |
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std::string lease_path; |
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if (!options.plain_args().empty()) { |
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std::vector<std::string> tokens = |
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SplitStringBounded(2, options.plain_args()[0].value_str, '/'); |
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fqrn = tokens[0]; |
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if (tokens.size() == 2) |
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lease_path = MakeCanonicalPath(tokens[1]); |
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} |
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SettingsBuilder builder; |
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UniquePtr<SettingsPublisher> settings; |
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try { |
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settings = builder.CreateSettingsPublisher(fqrn, true /* needs_managed */); |
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} catch (const EPublish &e) { |
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if (e.failure() == EPublish::kFailRepositoryNotFound) { |
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LogCvmfs(kLogCvmfs, kLogStderr | kLogSyslogErr, "CernVM-FS error: %s", |
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e.msg().c_str()); |
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return 1; |
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} |
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throw; |
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} |
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if (settings->transaction().in_enter_session()) { |
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throw EPublish( |
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"opening a transaction is unsupported within the ephemeral " |
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"writable shell", |
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EPublish::kFailInvocation); |
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} |
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if (options.Has("retry-timeout")) { |
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settings->GetTransaction()->SetTimeout(options.GetInt("retry-timeout")); |
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} |
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if (options.Has("template-from")) { |
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if (!options.Has("template-to")) |
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throw EPublish("invalid parameter combination for templates"); |
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settings->GetTransaction()->SetTemplate( |
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options.GetString("template-from"), options.GetString("template-to")); |
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} |
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if (options.Has("template")) { |
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if (options.Has("template-from") || options.Has("template-to")) |
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throw EPublish("invalid parameter combination for templates"); |
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std::string templ = options.GetString("template"); |
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std::vector<std::string> tokens = SplitString(templ, '='); |
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if (tokens.size() != 2) |
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throw EPublish("invalid syntax for --template parameter: " + templ); |
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settings->GetTransaction()->SetTemplate(tokens[0], tokens[1]); |
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} |
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if (!SwitchCredentials(settings->owner_uid(), settings->owner_gid(), |
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false /* temporarily */)) |
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{ |
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throw EPublish("No write permission to repository", |
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EPublish::kFailPermission); |
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} |
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FileSystemInfo fs_info = GetFileSystemInfo("/cvmfs"); |
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if (fs_info.type == kFsTypeAutofs) |
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throw EPublish("Autofs on /cvmfs has to be disabled"); |
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settings->GetTransaction()->SetLeasePath(lease_path); |
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UniquePtr<Publisher> publisher; |
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try { |
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publisher = new Publisher(*settings); |
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if (publisher->whitelist()->IsExpired()) { |
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throw EPublish("Repository whitelist for $name is expired", |
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EPublish::kFailWhitelistExpired); |
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} |
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} catch (const EPublish &e) { |
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LogCvmfs(kLogCvmfs, kLogStderr | kLogSyslogErr, "%s", e.msg().c_str()); |
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if (e.failure() == EPublish::kFailLayoutRevision || |
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e.failure() == EPublish::kFailWhitelistExpired) |
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{ |
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return EINVAL; |
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} |
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return EIO; |
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} |
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double whitelist_valid_s = |
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difftime(publisher->whitelist()->expires(), time(NULL)); |
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if (whitelist_valid_s < (12 * 60 * 60)) { |
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LogCvmfs(kLogCvmfs, kLogStdout, |
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"Warning: Repository whitelist stays valid for less than 12 hours!"); |
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} |
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int rvi = CallServerHook("transaction_before_hook", fqrn); |
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if (rvi != 0) { |
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LogCvmfs(kLogCvmfs, kLogStderr | kLogSyslogErr, |
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"transaction hook failed, not opening a transaction"); |
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return rvi; |
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} |
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try { |
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publisher->Transaction(); |
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} catch (const EPublish &e) { |
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const char *msg_prefix = "CernVM-FS transaction error: "; |
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if (e.failure() == EPublish::kFailTransactionState) { |
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LogCvmfs(kLogCvmfs, kLogStderr | kLogSyslogErr, "%s%s", |
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msg_prefix, e.msg().c_str()); |
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return EEXIST; |
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} else if (e.failure() == EPublish::kFailLeaseBusy) { |
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LogCvmfs(kLogCvmfs, kLogStderr | kLogSyslogErr, "%s%s", |
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msg_prefix, e.msg().c_str()); |
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return EBUSY; |
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} else if (e.failure() == EPublish::kFailLeaseNoEntry) { |
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LogCvmfs(kLogCvmfs, kLogStderr | kLogSyslogErr, "%s%s", |
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msg_prefix, e.msg().c_str()); |
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return ENOENT; |
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} else if (e.failure() == EPublish::kFailLeaseNoDir) { |
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LogCvmfs(kLogCvmfs, kLogStderr | kLogSyslogErr, "%s%s", |
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msg_prefix, e.msg().c_str()); |
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return ENOTDIR; |
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} else if (e.failure() == EPublish::kFailInput) { |
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LogCvmfs(kLogCvmfs, kLogStderr | kLogSyslogErr, "%s%s", |
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msg_prefix, e.msg().c_str()); |
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return EINVAL; |
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} |
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throw; |
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} |
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publisher->session()->SetKeepAlive(true); |
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rvi = CallServerHook("transaction_after_hook", fqrn); |
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if (rvi != 0) { |
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LogCvmfs(kLogCvmfs, kLogStderr | kLogSyslogErr, |
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"post transaction hook failed"); |
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return rvi; |
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} |
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return 0; |
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} |
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} // namespace publish |
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