acl_get_fd man page on Slackware

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ACL_GET_FD(3)		 BSD Library Functions Manual		 ACL_GET_FD(3)

NAME
     acl_get_fd — get an ACL by file descriptor

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

SYNOPSIS
     #include <sys/types.h>
     #include <sys/acl.h>

     acl_t
     acl_get_fd(int fd);

DESCRIPTION
     The acl_get_fd() function retrieves the access ACL associated with the
     file referred to by fd.  The ACL is placed into working storage and
     acl_get_fd() returns a pointer to that storage.

     In order to read an ACL from an object, a process must have read access
     to the object's attributes.

     This function may cause memory to be allocated.  The caller should free
     any releasable memory, when the new ACL is no longer required, by calling
     acl_free(3) with the (void*)acl_t returned by acl_get_fd() as an argu‐
     ment.

RETURN VALUE
     On success, this function shall return a pointer to the working storage.
     On error, a value of (acl_t)NULL shall be returned, and errno is set
     appropriately.

ERRORS
     If any of the following conditions occur, the acl_get_fd() function
     returns a value of (acl_t)NULL and sets errno to the corresponding value:

     [EBADF]		The fd argument is not a valid file descriptor.

     [ENOMEM]		The ACL working storage requires more memory than is
			allowed by the hardware or system-imposed memory man‐
			agement constraints.

     [ENOTSUP]		The file system on which the file identified by fd is
			located does not support ACLs, or ACLs are disabled.

STANDARDS
     IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned)

SEE ALSO
     acl_free(3), acl_get_entry(3), acl_get_file(3), acl_set_fd(3), acl(5)

AUTHOR
     Derived from the FreeBSD manual pages written by Robert N M Watson
     ⟨rwatson@FreeBSD.org⟩, and adapted for Linux by Andreas Gruenbacher
     ⟨a.gruenbacher@bestbits.at⟩.

Linux ACL			March 23, 2002			     Linux ACL
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