rpa::filgen_mkstemp_base Class Reference

#include <streambuf_tmpnam.h>

Inheritance diagram for rpa::filgen_mkstemp_base:

List of all members.

Public Member Functions
void	open (const char *filNam)
int	operator() (void) const
void	close (const char *filNam)
Private Attributes
int	_fd
char	_filename [FILENAME_MAX]

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Detailed Description

This functor generates a int file descriptor. Its optional parameter must be a functor which returns a const char ptr, which must contains the substring 'XXXXXX'.

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Member Function Documentation

void rpa::filgen_mkstemp_base::close

(

const char *

filNam

)

Because the file is created and opened in this class, it must be closed and removed here too.

void rpa::filgen_mkstemp_base::open

(

const char *

filNam

)

The mkstemp() function replaces the contents of the string pointed to by template by a unique file name, and returns a file descriptor for the file open for reading and writing. The function thus prevents any possible race condition between testing whether the file exists and opening it for use. The string in template should look like a file name with six trailing 'X's; mkstemp() replaces each 'X' with a character from the portable file name character set. The characters are chosen such that the resulting name does not duplicate the name of an existing file.

We should theoretically ensure that 'umask' is '0600', or that 'mkstemp' fixed this security hole.

int rpa::filgen_mkstemp_base::operator()

(

void

)

const [inline]

The inline code is smaller and faster than a method call. This method can and must be called without side effects. Hence 'const'.

Paranoid check, to detect erratic pointers, etc... ;);)

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Member Data Documentation

int rpa::filgen_mkstemp_base::_fd [private]

char rpa::filgen_mkstemp_base::_filename[FILENAME_MAX] [private]

The name of the file which is created. It is necessary to store it because, as this class is responsible for its atomic creation (With 'mkstemp'), it is therefore responsible of its removal.

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The documentation for this class was generated from the following files:

• streambuf_tmpnam.h
• streambuf_tmpnam.cpp

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