acl_extended_file man page on Mandriva

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ACL_EXTENDED_FILE(3)	 BSD Library Functions Manual	  ACL_EXTENDED_FILE(3)

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() func‐
     tion returns -1 and sets errno to the corresponding value:

     [EACCES]		Search permission is denied for a component of the
			path prefix.

     [ENAMETOOLONG]	The length of the argument path_p is too long.

     [ENOENT]		The named object does not exist or the argument path_p
			points to an empty string.

     [ENOTDIR]		A component of the path prefix is not a directory.

     [ENOTSUP]		The file system on which the file identified by path_p
			is located does not support ACLs, or ACLs are dis‐
			abled.

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

SEE ALSO
     access(2), acl_get_file(3), acl(5)

AUTHOR
     Written by Andreas Gruenbacher ⟨a.gruenbacher@bestbits.at⟩.

Linux ACL			March 23, 2002			     Linux ACL
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