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acl_extended_file (3)
  • >> acl_extended_file (3) ( Linux man: Библиотечные вызовы )

  • BSD mandoc
    Linux ACL  

    NAME

    acl_extended_file
    
     - test for information in ACLs by file name
    
    
    
     
    

    LIBRARY

    Linux Access Control Lists library (libacl, -lacl).
     
    

    SYNOPSIS

       #include <sys/types.h>
       #include <acl/libacl.h>
    int acl_extended_file (const char *path_p);
     

    DESCRIPTION

    The acl_extended_file ();
    function returns 1 if the file or directory referred to by the argument path_p is associated with an extended access ACL, or if the directory referred to by path_p is associated with a default ACL. The function returns 0 if the file has neither an extended access ACL nor a default ACL.

    An extended ACL is an ACL that contains entries other than the three required entries of tag types ACL_USER_OBJ, ACL_GROUP_OBJ and ACL_OTHER. If the result of the acl_extended_file ();
    function for a file object is 0 then ACLs define no discretionary access rights other than those already defined by the traditional file permission bits.

    Access to the file object may be further restricted by other mechanisms, such as Mandatory Access Control schemes. The access(2) system call can be used to check whether a given type of access to a file object would be granted.  

    RETURN VALUE

    If successful, the acl_extended_file ();
    function returns 1 if the file object referred to by path_p has an extended access ACL or a default ACL, and 0 if the file object referred to by path_p has neither an extended access ACL nor a default ACL. Otherwise, the value -1 is returned and the global variable errno is set to indicate the error.  

    ERRORS

    If any of the following conditions occur, the acl_extended_file ();
    function returns -1 and sets errno to the corresponding value:

    Bq Er EACCES
    Search permission is denied for a component of the path prefix.
    Bq Er ENAMETOOLONG
    The length of the argument path_p is too long.
    Bq Er ENOENT
    The named object does not exist or the argument path_p points to an empty string.
    Bq Er ENOTDIR
    A component of the path prefix is not a directory.
    Bq Er ENOTSUP
    The file system on which the file identified by path_p is located does not support ACLs, or ACLs are disabled.

     

    STANDARDS

    This is a non-portable, Linux specific extension to the ACL manipulation functions defined in IEEE Std 1003.1e draft 17 (lqPOSIX.1erq, abandoned).  

    SEE ALSO

    access(2), acl_get_file3, acl(5)  

    AUTHOR

    Written by An Andreas Gruenbacher Aq [email protected] .


     

    Index

    NAME
    LIBRARY
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    ERRORS
    STANDARDS
    SEE ALSO
    AUTHOR


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