Copyright (c) 2000, 2002 Robert N. M. Watson
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This software was developed by Robert Watson for the TrustedBSD Project.
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$FreeBSD: src/lib/libc/posix1e/acl_set.3,v 1.16 2003/02/23 01:44:59 ru Exp $
.Dd December 29, 2002 .Dt ACL_SET 3 .Os .Sh NAME .Nm acl_set_fd , .Nm acl_set_fd_np , .Nm acl_set_file , .Nm acl_set_link_np .Nd set an ACL for a file .Sh LIBRARY .Lb libc .Sh SYNOPSIS n sys/types.h n sys/acl.h .Ft int .Fn acl_set_fd "int fd" "acl_t acl" .Ft int .Fn acl_set_fd_np "int fd" "acl_t acl" "acl_type_t type" .Ft int .Fn acl_set_file "const char *path_p" "acl_type_t type" "acl_t acl" .Ft int .Fn acl_set_link_np "const char *path_p" "acl_type_t type" "acl_t acl" .Sh DESCRIPTION The .Fn acl_set_fd , .Fn acl_set_fd_np , .Fn acl_set_file , and .Fn acl_set_link_np each associate an ACL with an object referred to by .Va fd or .Va path_p . The .Fn acl_set_fd_np and .Fn acl_set_link_np functions are not POSIX.1e calls. The .Fn acl_set_fd function allows only the setting of ACLs of type ACL_TYPE_EXTENDED where as .Fn acl_set_fd_np allows the setting of ACLs of any type.
p The .Fn acl_set_link_np function acts on a symlink rather than its target, if the target of the path is a symlink. In the case of a symlink, this function will return an error because ACLs are not currently supported on symlinks. Note that the implementation is not atomic, and so the target could change between the time it is checked as not being a symlink, and the time the ACL is set. .Sh RETURN VALUES .Rv -std .Sh ERRORS If any of the following conditions occur, these functions shall return -1 and set .Va errno to the corresponding value: l -tag -width Er t Bq Er EACCES Search permission is denied for a component of the path prefix, or the object exists and the process does not have appropriate access rights. t Bq Er EBADF The .Va fd argument is not a valid file descriptor. t Bq Er EINVAL Argument .Va acl does not point to a valid ACL for this object, or the ACL type specified in .Va type is invalid for this object, or both. t Bq Er ENAMETOOLONG A component of a pathname exceeded 255 characters, or an entire path name exceeded 1023 characters. t Bq Er ENOENT The named object does not exist, or the .Va path_p argument points to an empty string. t Bq Er ENOMEM Insufficient memory available to fulfill request. t Bq Er ENOSPC The directory or file system that would contain the new ACL cannot be extended, or the file system is out of file allocation resources. t Bq Er EOPNOTSUPP The file system does not support ACL retrieval. t Bq Er EROFS This function requires modification of a file system which is currently read-only. .El .Sh SEE ALSO .Xr acl 3 , .Xr acl_delete 3 , .Xr acl_get 3 , .Xr acl_valid 3 , .Xr posix1e 3 .Sh STANDARDS POSIX.1e is described in IEEE POSIX.1e draft 17. .Sh AUTHORS .An Michael Smith .An Robert N M Watson