fcfgopen()

Open a configuration file

Synopsis:

#include <cfgopen.h>

FILE * fcfgopen( const char * path,
                 const char * mode, 
                 int location,
                 const char * historical, 
                 char * namebuf, 
                 size_t nblen );

Arguments:

path: The name of the configuration file that you want to open.
mode: A string that describes the mode to open in; see fopen().
location: Flags that describe how the path is constructed. See “Search condition flags” in the documentation for cfgopen().
historical: A optional file to open as a last resort if none of the criteria for finding the path is met. This string works like a path search order, and lets you search more than one location. You can also specify %H to substitute the hostname value into the string. Specify NULL to ignore this option.
namebuf: A buffer to save the pathname in. Specify NULL to ignore this option.
nblen: The length of the buffer pointed to by namebuf. Specify 0 to ignore this option.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The fcfgopen() function is similar to cfgopen() with these exceptions:

The CFGFILE_NOFD flag isn't valid.
The values for flags described in open() aren't valid.

Returns:

A valid FILE * pointer, or NULL if an error occurs (errno is set).

Errors:

EINVAL: An argument is invalid.
ENAMETOOLONG: The path argument exceeds PATH_MAX in length.
ENOENT: The specified path doesn't exist, or path is an empty string.

Classification:

QNX Neutrino

Safety:
Cancellation point	Yes
Interrupt handler	No
Signal handler	Yes
Thread	Yes