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ACL_EQUIV_MODE

Section: C Library Functions (3)
Index Return to Main Contents

BSD mandoc
Linux ACL  

NAME

acl_equiv_mode - check for an equivalent ACL  

LIBRARY

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

SYNOPSIS

In sys/types.h In acl/libacl.h Ft int Fn acl_equiv_mode acl_t acl mode_t *mode_p  

DESCRIPTION

The Fn acl_equiv_mode function checks if the ACL pointed to by the argument acl contains only the required ACL entries of tag types ACL_USER_OBJ, ACL_GROUP_OBJ, and ACL_OTHER, and contains no permissions other that ACL_READ, ACL_WRITE or ACL_EXECUTE. If the ACL has this form, it can can be fully represented with the traditional file permission bits, and is considered equivalent with the traditional file permission bits.

If acl is an equivalent ACL and the pointer mode_p is not NULL , the value pointed to by mode_p is set to the value that defines the same owner, group and other permissions as contained in the ACL.  

RETURN VALUE

On success, this function returns the value 0 if acl is an equivalent ACL, and the value 1 if acl is not an equivalent ACL. On error, the value -1 is returned, and errno is set appropriately.  

ERRORS

If any of the following conditions occur, the Fn acl_equiv_mode function returns the value -1 and sets errno to the corresponding value:

Bq Er EINVAL
The argument acl is not a valid pointer to an ACL.

 

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

acl_from_mode3, acl(5)  

AUTHOR

Written by An Andreas Gruenbacher Aq a.gruenbacher@bestbits.at .


 

Index

NAME
LIBRARY
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
STANDARDS
SEE ALSO
AUTHOR


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