QlgPathconf()--Get Configurable Path Name Variables (using NLS-enabled path name)

 #include <unistd.h>

 long QlgPathconf(Qlg_Path_Name_T *path, int name);  

The QlgPathconf() function, like the pathconf() function, lets an application determine the value of a configuration variable (name) associated with a particular file or directory (path). The difference is that the QlgPathconf() function takes a pointer to a Qlg_Path_Name_T structure, while pathconf() takes a pointer to a character string.

Limited information on the path parameter is provided here. For more information on the path parameter and for a discussion of other parameters, authorities required, return values, and related information, see pathconf()--Get Configurable Path Name Variables.

Parameters

path

(Input) A pointer to a Qlg_Path_Name_T structure that contains a path name or a pointer to a path name for which the value of the configuration variable is requested. For more information on the Qlg_Path_Name_T structure, see Path name format.

Related Information

• fpathconf()--Get Configurable Path Name Variables by Descriptor
  
  
• pathconf()--Get Configurable Path Name Variables
  
  
• QlgChown()--Change Owner and Group of File (using NLS-enabled path name)

Example

See Code disclaimer information for information pertaining to code examples.

The following example determines the maximum number of bytes in a file name:

#include <stdio.h>
#include <unistd.h>
#include <errno.h>

main() {
  long result;
#define mypath "/"
  const char US_const[3]= "US";
  const char Language_const[4] ="ENU";
  typedef struct pnstruct
  {
    Qlg_Path_Name_T qlg_struct;
    char pn[100]; /* This array size must be >= the  */
                    /* length of the path name or must */
                    /* be a pointer to the path name.  */
  };
  struct pnstruct path;

   /***************************************************************/
   /*   Initialize Qlg_Path_Name_T parameters                     */
   /***************************************************************/
  memset((void*)&path, 0x00, sizeof(struct pnstruct));
  path.qlg_struct.CCSID = 37;
  memcpy(path.qlg_struct.Country_ID,US_const,2);
  memcpy(path.qlg_struct.Language_ID,Language_const,3);
  path.qlg_struct.Path_Type = QLG_CHAR_SINGLE;
  path.qlg_struct.Path_Length = sizeof(mypath)-1;
  path.qlg_struct.Path_Name_Delimiter[0] = '/';
  memcpy(path.pn,mypath,sizeof(mypath)-1);

  errno = 0;
  puts("examining NAME_MAX limit for root filesystem");
  if ((result = QlgPathconf((Qlg_Path_Name_T *)&path,
                                        _PC_NAME_MAX)) == -1)
    if (errno == 0)
      puts("There is no limit to NAME_MAX.");
    else perror("QlgPathconf() error");
  else
    printf("NAME_MAX is %ld\n", result);
}

Output:

examining NAME_MAX limit for root filesystem
NAME_MAX is 255