From 1f6601e1a657d7008f6c15fca71d2dc092f7cb78 Mon Sep 17 00:00:00 2001 From: Thomas Bushnell Date: Thu, 1 Jul 1999 21:04:27 +0000 Subject: 1999-07-01 Thomas Bushnell, BSG * translated.c: New file; guts from fshelp.h. * perms-isowner.c: Likewise. * perms-access.c: Likewise. * prems-checkdirmod.c: Likewise. * touch.c: Likewise. * fshelp.h (fshelp_translated, fshelp_isowner, fshelp_access, fshelp_checkdirmod, fshelp_touch): Replace inline definitions with ordinary declarations. (FSHELP_EI): Removed macro. * fshelp.c: Deleted file. * Makefile (SRCS): Added translated.c, perms-isowner.c, perms-access.c, perms-checkdirmod.c, touch.c. Removed fshelp.c. --- libfshelp/perms-access.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 libfshelp/perms-access.c (limited to 'libfshelp/perms-access.c') diff --git a/libfshelp/perms-access.c b/libfshelp/perms-access.c new file mode 100644 index 00000000..91ad9da8 --- /dev/null +++ b/libfshelp/perms-access.c @@ -0,0 +1,43 @@ +/* + Copyright (C) 1999 Free Software Foundation, Inc. + Written by Thomas Bushnell, BSG. + + This file is part of the GNU Hurd. + + The GNU Hurd is free software; 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, or (at + your option) any later version. + + The GNU Hurd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. */ + + +#include "fshelp.h" + +/* Check to see whether the user USER can operate on a file identified + by ST. OP is one of S_IREAD, S_IWRITE, and S_IEXEC. If the access + is permitted, return zero; otherwise return an appropriate error + code. */ +error_t +fshelp_access (struct stat *st, int op, struct iouser *user) +{ + int gotit; + if (idvec_contains (user->uids, 0)) + gotit = 1; + else if (user->uids->num == 0 && (st->st_mode & S_IUSEUNK)) + gotit = st->st_mode & (op << S_IUNKSHIFT); + else if (!fshelp_isowner (st, user)) + gotit = st->st_mode & op; + else if (idvec_contains (user->gids, st->st_gid)) + gotit = st->st_mode & (op >> 3); + else + gotit = st->st_mode & (op >> 6); + return gotit ? 0 : EACCES; +} -- cgit v1.2.3