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_valid.3,v 1.14 2002/12/29 20:47:05 rwatson Exp $
.Dd December 29, 2002 .Dt ACL_VALID 3 .Os .Sh NAME .Nm acl_valid , .Nm acl_valid_fd_np , .Nm acl_valid_file_np , .Nm acl_valid_link_np .Nd validate an ACL .Sh LIBRARY .Lb libc .Sh SYNOPSIS n sys/types.h n sys/acl.h .Ft int .Fn acl_valid "acl_t acl" .Ft int .Fn acl_valid_fd_np "int fd" "acl_type_t type" "acl_t acl" .Ft int .Fn acl_valid_file_np "const char *path_p" "acl_type_t type" "acl_t acl" .Ft int .Fn acl_valid_link_np "const char *path_p" "acl_type_t type" "acl_t acl" .Sh DESCRIPTION These functions check that the ACL referred to by the argument .Va acl is valid. The POSIX.1e routine, .Fn acl_valid , checks assumes ACL_TYPE_EXTENDED, and disregard of the context in which the ACL is to be used. The non-portable forms, .Fn acl_valid_fd_np , .Fn acl_valid_file_np , and .Fn acl_valid_link_np allow an ACL to be checked in the context of a specific acl type, .Va type , and file system object. In environments where additional ACL types are supported than just POSIX.1e, this makes more sense. Whereas .Fn acl_valid_file_np will follow the symlink if the specified path is to a symlink, .Fn acl_valid_link_np will not.
p The qualifier field shall be unique among all entries of the same POSIX.1e ACL facility defined tag type. The tag type field shall contain valid values including any implementation-defined values. Validation of the values of the qualifier field is implementation-defined.
p The POSIX.1e .Fn acl_valid function may reorder the ACL for the purposes of verification; the non-portable validation functions will not. .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.
p One or more of the required ACL entries is not present in .Va acl .
p The ACL contains entries that are not unique.
p The file system rejects the ACL based on fs-specific semantics issues. 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 EOPNOTSUPP The file system does not support ACL retrieval. .El .Sh SEE ALSO .Xr acl 3 , .Xr acl_get 3 , .Xr acl_init 3 , .Xr acl_set 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