2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 3 of the License, or
5 * (at your option) any later version.
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, see <http://www.gnu.org/licenses/>.
17 #include "closefrom_except.h"
20 int closefrom_except(int lower, int *fds, size_t num_fds)
26 for (i=0; i<num_fds; i++) {
27 max_keep = MAX(max_keep, fds[i]);
33 for (fd = lower; fd < max_keep; fd++) {
37 * O(num_fds*max_keep), but we expect the number of
38 * fds to keep to be very small, typically 0,1,2 and
41 for (i=0; i<num_fds; i++) {
51 if ((ret == -1) && (errno != EBADF)) {
56 closefrom(MAX(lower, max_keep+1));
60 int closefrom_except_fd_params(
63 const char *fd_params[],
67 int fds[num_fd_params];
69 struct poptOption long_options[num_fd_params + 1];
73 for (i=0; i<num_fd_params; i++) {
75 long_options[i] = (struct poptOption) {
76 .longName = fd_params[i],
77 .argInfo = POPT_ARG_INT,
81 long_options[num_fd_params] = (struct poptOption) { .longName=NULL, };
83 pc = poptGetContext(argv[0], argc, argv, long_options, 0);
85 while ((ret = poptGetNextOpt(pc)) != -1) {
91 ret = closefrom_except(lower, fds, ARRAY_SIZE(fds));