explain_pclose_or_die(3) [debian man page]

explain_pclose_or_die(3)				     Library Functions Manual					  explain_pclose_or_die(3)

NAME

       explain_pclose_or_die - process I/O and report errors

SYNOPSIS

       #include <libexplain/pclose.h>
       int explain_pclose_or_die(FILE *fp);
       int explain_pclose_success(FILE *fp);
       void explain_pclose_success_or_die(FILE *fp);

DESCRIPTION

       These functions may be used to wait for program termination, and then reprt errors returned by the pclose(3) system call.

   explain_pclose_or_die
       int explain_pclose_or_die(FILE *fp);

       The  explain_pclose_or_die  function  is  used  to  call  the  pclose(3) system call.  On failure an explanation will be printed to stderr,
       obtained from explain_pclose(3), and then the process terminates by calling exit(EXIT_FAILURE).

       This function is intended to be used in a fashion similar to the following example:
	      int status = explain_pclose_or_die(fp);

       fp      The fp, exactly as to be passed to the pclose(3) system call.

       Returns:
	       This function only returns on success, see pclose(3) for more information.  On failure, prints an explanation and exits.

   explain_pclose_success_or_die
       void explain_pclose_success_or_die(FILE *);

       The explain_pclose_success_or_die function is used to call the pclose(3) system call.  On failure, including any  exit  status  other  than
       EXIT_SUCCESS,  an  explanation  will  be  printed  to  stderr,  obtained from explain_pclose(3), and then the process terminates by calling
       exit(EXIT_FAILURE).

       This function is intended to be used in a fashion similar to the following example:
	      explain_pclose_success_or_die(fp);

       fp      The fp, exactly as to be passed to the pclose(3) system call.

       Returns:
	       This function only returns on success.  On failure, prints an explanation and exits.

   explain_pclose_success
       int explain_pclose_success(FILE *fp);

       The explain_pclose_success function is used to call the pclose(3) system call.  On failure, including any exit status other than  EXIT_SUC-
       CESS,  an explanation will be printed to stderr, obtained from explain_pclose(3).  However, the priniting of an error message does not also
       cause exit(2) to be called.

       This function is intended to be used in a fashion similar to the following example:
	      int status = explain_pclose_success(command);

       fp      The fp, exactly as to be passed to the pclose(3) system call.

       Returns:
	       the value returned by the pclose(3) system call.  In all cases other than EXIT_SUCCESS,	an  error  message  will  also	have  been
	       printed to stderr.

SEE ALSO

       pclose(3)
	       process I/O

       explain_pclose(3)
	       explain pclose(3) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 0.52
       Copyright (C) 2009 Peter Miller

															  explain_pclose_or_die(3)

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explain_pwrite_or_die(3)				     Library Functions Manual					  explain_pwrite_or_die(3)

NAME

       explain_pwrite_or_die - seek and write to a file descriptor and report errors

SYNOPSIS

       #include <libexplain/pwrite.h>
       ssize_t explain_pwrite_or_die(int fildes, const void *data, size_t data_size, off_t offset);
       ssize_t explain_pwrite_on_error(int fildes, const void *data, size_t data_size, off_t offset))

DESCRIPTION

       The explain_pwrite_or_die function is used to call the pwrite(2) system call. On failure an explanation will be printed to stderr, obtained
       from the explain_pwrite(3) function, and then the process terminates by calling exit(EXIT_FAILURE).

       The explain_pwrite_on_error function is used to call the pwrite(2) system call. On failure  an  explanation  will  be  printed  to  stderr,
       obtained from the explain_pwrite(3) function, but still returns to the caller.

       fildes  The fildes, exactly as to be passed to the pwrite(2) system call.

       data    The data, exactly as to be passed to the pwrite(2) system call.

       data_size
	       The data_size, exactly as to be passed to the pwrite(2) system call.

       offset  The offset, exactly as to be passed to the pwrite(2) system call.

RETURN VALUE

       The  explain_pwrite_or_die  function  only  returns  on	success, see pwrite(2) for more information. On failure, prints an explanation and
       exits, it does not return.

       The explain_pwrite_on_error function always returns the value return by the wrapped pwrite(2) system call.

EXAMPLE

       The explain_pwrite_or_die function is intended to be used in a fashion similar to the following example:
	      ssize_t result = explain_pwrite_or_die(fildes, data, data_size, offset);

SEE ALSO

       pwrite(2)
	       read from or write to a file descriptor at a given offset

       explain_pwrite(3)
	       explain pwrite(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 0.52
       Copyright (C) 2009 Peter Miller

															  explain_pwrite_or_die(3)

Linux and UNIX Man Pages

explain_pclose_or_die(3) [debian man page]

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