acl_get_fd (3)
Leading comments
Access Control Lists manual pages (C) 2002 Andreas Gruenbacher, <a.gruenbacher@bestbits.at> This is free documentation; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU General Public License's references to "object code" and "executables" are to be interpreted as the output of any document formatting or typesetting system, ...
NAME
acl_get_fd - get an ACL by file descriptorLIBRARY
Linux Access Control Lists library (libacl, -lacl).SYNOPSIS
In sys/types.h In sys/acl.h Ft acl_t Fn acl_get_fd int fdDESCRIPTION
The Fn acl_get_fd function retrieves the access ACL associated with the file referred to by fd The ACL is placed into working storage and Fn 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_free3 with the (void*)acl_t returned by Fn acl_get_fd as an argument.
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 Fn acl_get_fd function returns a value of (acl_t)NULL and sets errno to the corresponding value:- Bq Er EBADF
- The fd argument is not a valid file descriptor.
- Bq Er ENOMEM
- The ACL working storage requires more memory than is allowed by the hardware or system-imposed memory management constraints.
- Bq Er ENOTSUP
- The file system on which the file identified by fd is located does not support ACLs, or ACLs are disabled.