39 lines
1009 B
C++
39 lines
1009 B
C++
#ifndef LINUX_UTILITY_UNIXFILEGUARD_H_
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#define LINUX_UTILITY_UNIXFILEGUARD_H_
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#include <fcntl.h>
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#include <fsfw/returnvalues/returnvalue.h>
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#include <unistd.h>
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#include <string>
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class UnixFileGuard {
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public:
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static constexpr int READ_WRITE_FLAG = O_RDWR;
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static constexpr int READ_ONLY_FLAG = O_RDONLY;
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static constexpr int NON_BLOCKING_IO_FLAG = O_NONBLOCK;
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static constexpr ReturnValue_t OPEN_FILE_FAILED = 1;
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/**
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* Open a device and assign the given file descriptor variable
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* @param device [in] Device name.
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* @param fileDescriptor [in/out] Will be assigned by file guard and re-used to
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* close the guard.
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* @param flags
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* @param diagnosticPrefix
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*/
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UnixFileGuard(const std::string& device, int& fileDescriptor, int flags,
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std::string diagnosticPrefix = "");
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virtual ~UnixFileGuard();
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ReturnValue_t getOpenResult() const;
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private:
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int& fdRef;
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ReturnValue_t openStatus = returnvalue::OK;
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};
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#endif /* LINUX_UTILITY_UNIXFILEGUARD_H_ */
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