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truncateToSize Class Reference
Inheritance diagram for truncateToSize:
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Collaboration diagram for truncateToSize:
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Public Member Functions

 truncateToSize ()
 
void execute (const std::vector< std::string > &remainingOptions) override
 
- Public Member Functions inherited from baseTest
 baseTest (const std::string &aName, const std::string &aDescription, const decltype(parameters)&aParameters, const decltype(options)&aOptions={})
 
void ensuredWrite (int fd, const std::string &data)
 
void ensuredRead (int fd, std::string &data)
 
void Execute (const std::vector< std::string > &remainingOptions)
 

Additional Inherited Members

- Static Public Member Functions inherited from baseTest
static std::map< std::string, baseTest * > & getList ()
 
static void setUpOptions ()
 
static const std::string & getDescriptions ()
 
- Protected Attributes inherited from baseTest
std::string name
 
std::string description
 
std::list< std::pair< std::string, std::string > > parameters
 
std::list< std::pair< options::base &, std::string > > options
 
std::set< std::string > createdFiles
 
- Static Protected Attributes inherited from baseTest
static options::single< unsigned int > repeat
 
static options::single< bool > cleanup
 
static options::single< bool > urandom
 
static options::single< bool > einsZweiDrei
 
static options::single< std::string > contentFile
 
static options::single< size_t > size
 
static options::single< unsigned int > blocks
 
static options::single< std::string > content
 
static options::single< bool > truncate
 
static options::single< std::chrono::duration< double > > time
 
static options::single< unsigned long > syncus
 
static options::single< unsigned long > skewus
 
static std::string descriptions = "\npossible actions and their parameters:\n"
 

Detailed Description

Definition at line 699 of file fileOpsTests.cpp.

Constructor & Destructor Documentation

◆ truncateToSize()

truncateToSize::truncateToSize ( )
inline

Definition at line 701 of file fileOpsTests.cpp.

701  : baseTest("truncateToSize",
702  "truncate existing file to it;s size", {
703  {"file", "path to file"
704  }
705  }) {};

Member Function Documentation

◆ execute()

void truncateToSize::execute ( const std::vector< std::string > &  remainingOptions)
inlineoverridevirtual

Implements baseTest.

Definition at line 706 of file fileOpsTests.cpp.

706  {
707  auto file = remainingOptions.at(0);
708  auto fd = throwcall::badval(open(file.c_str(), O_WRONLY), -1, "open ", file);
709  struct stat statbuf;
710  throwcall::good0(fstat(fd, &statbuf), "stat ", file);
711  throwcall::good0(ftruncate(fd, statbuf.st_size), "truncate ", file, " to ", statbuf.st_size, " bytes");
712  throwcall::good0(close(fd), "close ", file);
713  };

References throwcall::badval(), and throwcall::good0().

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The documentation for this class was generated from the following file:
throwcall::badval
T badval(T call, t badvalue, const Args &... args)
template function to wrap system calls that return a special bad value on failure
Definition: throwcall.h:54
baseTest::baseTest
baseTest(const std::string &aName, const std::string &aDescription, const decltype(parameters)&aParameters, const decltype(options)&aOptions={})
Definition: fileOpsTests.cpp:68
throwcall::good0
void good0(T call, const Args &... args)
template function to wrap system calls that return 0 on success
Definition: throwcall.h:40