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ACL_COPY_EXT

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

BSD mandoc
Linux ACL  

NAME

acl_copy_ext - copy an ACL from internal to external representation  

LIBRARY

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

SYNOPSIS

In sys/types.h In sys/acl.h Ft ssize_t Fn acl_copy_ext void *buf_p acl_t acl ssize_t size  

DESCRIPTION

The Fn acl_copy_ext function copies the ACL pointed to by acl from system-managed space to the user managed space pointed to by buf_p The size parameter represents the size in bytes of the buffer pointed to by buf_p The format of the ACL placed in the buffer pointed to by buf_p is a contiguous, persistent data item, the format of which is unspecified. It is the responsibility of the invoker to allocate an area large enough to hold the copied ACL. The size of the exportable, contiguous, persistent form of the ACL may be obtained by invoking the Fn acl_size function.

Any ACL entry descriptors that refer to an entry in the ACL referenced by acl continue to refer to those entries. Any existing ACL pointers that refer to the ACL referenced by acl continue to refer to the ACL.  

RETURN VALUE

Upon success, this function returns the number of bytes placed in the buffer pointed to by buf_p On error, a value of (ssize_t)-1 is returned and errno is set appropriately.  

ERRORS

If any of the following conditions occur, the Fn acl_copy_ext function returns a value of (ssize_t)-1 and sets errno to the corresponding value:

Bq Er EINVAL
The size parameter is zero or negative.

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

The ACL referenced by acl contains one or more improperly formed ACL entries, or for some other reason cannot be translated into the external form of an ACL.

Bq Er ERANGE
The size parameter is greater than zero but smaller than the length of the contiguous, persistent form of the ACL.

 

STANDARDS

IEEE Std 1003.1e draft 17 (lqPOSIX.1erq, abandoned)  

SEE ALSO

acl_copy_int3, acl_size3, acl(5)  

AUTHOR

Derived from the FreeBSD manual pages written by An Robert N M Watson Aq rwatson@FreeBSD.org , and adapted for Linux 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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