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acl_get_qualifier (3)
  • >> acl_get_qualifier (3) ( FreeBSD man: Библиотечные вызовы )
  • acl_get_qualifier (3) ( Linux man: Библиотечные вызовы )

  • BSD mandoc
     

    NAME

    
    
    acl_get_qualifier
    
     - retrieve the qualifier from an ACL entry
    
     
    

    LIBRARY

    Lb libc
    
     
    

    SYNOPSIS

       #include <sys/types.h>
       #include <sys/acl.h>
    void * acl_get_qualifier (acl_entry_t entry_d);
     

    DESCRIPTION

    The acl_get_qualifier ();
    function is a POSIX.1e call that retrieves the qualifier of the tag for the ACL entry indicated by the argument Fa entry_d into working storage and returns a pointer to that storage.

    If the value of the tag type in the ACL entry referred to by Fa entry_d is ACL_USER then the value returned by acl_get_qualifier ();
    will be a pointer to type Vt uid_t .

    If the value of the tag type in the ACL entry referred to by Fa entry_d is ACL_GROUP then the value returned by acl_get_qualifier ();
    will be a pointer to type Vt gid_t .

    If the value of the tag type in the ACL entry referred to by Fa entry_d is ACL_UNDEFINED_TAG , ACL_USER_OBJ , ACL_GROUP_OBJ ACL_OTHER , ACL_MASK or an implementation-defined value for which a qualifier is not supported, then acl_get_qualifier ();
    will return a value of Vt ( void * ) Ns Dv NULL and the function will fail.

    This function may cause memory to be allocated. The caller should free any releasable memory, when the new qualifier is no longer required, by calling acl_free ();
    with Vt void * as the argument.  

    RETURN VALUES

    The acl_get_qualifier ();
    function returns a pointer to the allocated storage if successful; otherwise a NULL pointer is returned and the global variable errno is set to indicate the error.  

    ERRORS

    The acl_get_qualifier ();
    fails if:

    Bq Er EINVAL
    Argument Fa entry_d does not point to a valid descriptor for an ACL entry. The value of the tag type in the ACL entry referenced by argument Fa entry_d is not ACL_USER or ACL_GROUP
    Bq Er ENOMEM
    The value to be returned requires more memory than is allowed by the hardware or system-imposed memory management constraints.

     

    SEE ALSO

    acl(3), acl_create_entry3, acl_free3, acl_get_entry3, acl_get_tag_type3, acl_set_qualifier3, acl_set_tag_type3, posix1e(3)  

    STANDARDS

    POSIX.1e is described in IEEE POSIX.1e draft 17.  

    HISTORY

    POSIX.1e support was introduced in Fx 4.0 . The acl_get_qualifier ();
    function was added in Fx 5.0 .  

    AUTHORS

    The acl_get_qualifier ();
    function was written by An Chris D. Faulhaber Aq [email protected] .


     

    Index

    NAME
    LIBRARY
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    ERRORS
    SEE ALSO
    STANDARDS
    HISTORY
    AUTHORS


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