QlgAccess()--Determine File Accessibility (using NLS-enabled path name)

 #include <unistd.h>

 int QlgAccess(const Qlg_Path_Name_T *path, int amode);  

The QlgAccess() function, like the access() function, determines whether a file can be accessed in a particular manner. The difference is that the QlgAccess() function takes a pointer to a Qlg_Path_Name_T structure, while access() 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 access()--Determine File Accessibility.

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 the file to be checked for accessibility. For more information on the Qlg_Path_Name_T structure, see Path name format.

Related Information

• access()--Determine File Accessiblity
• accessx()--Determine File Accessibility for Class of Users
• faccessx()--Determine File Accessibility for Class of Users
• QlgAccessx()--Determine File Accessibility for Class of Users (using NLS-enabled path name)
• QlgChmod--Change File Authorizations (using NLS-enabled path name)
• QlgStat()--Get File Information (using NLS-enabled path name)

Example

See Code disclaimer information for information pertaining to code examples.

The following example determines how a file is accessed:

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

main()
{

  /****************************************************************/
  /*   Defininitons                                               */
  /****************************************************************/
#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 this must */
                  /* be a pointer to the path name.  */
  };
  struct pnstruct path;

  /****************************************************************/
  /*   Initialize Qlg_Path_Name_T parameters                      */
  /****************************************************************/
  memset((void*)path name, 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);


  if (QlgAccess((Qlg_Path_Name_T *)&path, F_OK) != 0)
    printf("'%s' does not exist!\n", mypath);
  else {
    if (QlgAccess((Qlg_Path_Name_T *)&path, R_OK) == 0)
      printf("You have read access to '%s'\n", mypath);
    if (QlgAccess((Qlg_Path_Name_T *)&path, W_OK) == 0)
      printf("You have write access to '%s'\n", mypath);
    if (QlgAccess((Qlg_Path_Name_T *)&path, X_OK) == 0)
      printf("You have search access to '%s'\n", mypath);
  }
}

Output:

The output from a user with read and execute access is:

You have read access to '/'
You have write access to '/'
You have search access to '/'