3 // Copyright (C) 2004 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
5 // This program is free software; you can redistribute it and/or modify
6 // it under the terms of the GNU General Public License as published by
7 // the Free Software Foundation; version 2 of the License.
9 // This program is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License
15 // along with this program; if not, write to the Free Software
16 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 #include <lib/vserver.h>
30 #define ENSC_WRAPPERS_PREFIX "vattribute: "
31 #define ENSC_WRAPPERS_VSERVER 1
32 #define ENSC_WRAPPERS_UNISTD 1
35 #define CMD_HELP 0x1000
36 #define CMD_VERSION 0x1001
37 #define CMD_XID 0x2000
38 #define CMD_SET 0x2001
39 #define CMD_CCAP 0x2002
40 #define CMD_FLAG 0x2003
41 #define CMD_SECURE 0x2004
42 #define CMD_BCAP 0x2005
43 #define CMD_GET 0x2006
45 int wrapper_exit_code = 1;
49 { "help", no_argument, 0, CMD_HELP },
50 { "version", no_argument, 0, CMD_VERSION },
51 { "xid", required_argument, 0, CMD_XID },
52 { "set", no_argument, 0, CMD_SET },
53 { "get", no_argument, 0, CMD_GET },
54 { "ccap", required_argument, 0, CMD_CCAP },
55 { "bcap", required_argument, 0, CMD_BCAP },
56 { "flag", required_argument, 0, CMD_FLAG },
57 { "secure", no_argument, 0, CMD_SECURE },
63 struct vc_ctx_flags flags;
64 struct vc_ctx_caps caps;
69 showHelp(int fd, char const *cmd, int res)
71 WRITE_MSG(fd, "Usage:\n ");
74 " [--xid <xid>] {--get|--set [--bcap [~!]<cap>] [--ccap [~!]<cap>]\n"
75 " [--flag [~!]<flag>] [--secure]} -- [<program> <args>*]\n"
77 " --bcap <cap> ... system capability to be set\n"
78 " --ccap <cap> ... context capability to be set\n"
79 " --flag <flag> ... context flag to be set\n"
81 "Please report bugs to " PACKAGE_BUGREPORT "\n");
90 "vattribute " VERSION " -- sets/gets attributes of vservers\n"
91 "This program is part of " PACKAGE_STRING "\n\n"
92 "Copyright (C) 2004 Enrico Scholz\n"
93 VERSION_COPYRIGHT_DISCLAIMER);
98 parseFlags(char const *str, struct vc_ctx_flags *flags)
100 struct vc_err_listparser err;
103 rc = vc_list2cflag(str,0, &err, flags);
106 WRITE_MSG(2, "Unknown flag '");
107 Vwrite(2, err.ptr, err.len);
109 exit(wrapper_exit_code);
114 parseBCaps(char const *str, struct vc_ctx_caps *caps)
116 struct vc_err_listparser err;
119 rc = vc_list2bcap(str,0, &err, caps);
122 WRITE_MSG(2, "Unknown bcap '");
123 Vwrite(2, err.ptr, err.len);
125 exit(wrapper_exit_code);
130 parseCCaps(char const *str, struct vc_ctx_caps *caps)
132 struct vc_err_listparser err;
135 rc = vc_list2ccap(str,0, &err, caps);
138 WRITE_MSG(2, "Unknown ccap '");
139 Vwrite(2, err.ptr, err.len);
141 exit(wrapper_exit_code);
146 parseSecure(struct vc_ctx_flags UNUSED * flags,
147 struct vc_ctx_caps UNUSED * caps)
149 caps->ccaps = ~vc_get_insecureccaps();
151 caps->bcaps = ~vc_get_insecurebcaps();
154 // TODO: generalize this
155 flags->flagword = VC_VXF_HIDE_NETIF;
156 flags->mask = VC_VXF_HIDE_NETIF;
160 ffsull(unsigned long long word)
163 for (bit = 0; bit < 64; bit++) {
164 if (word & (1ULL << bit))
173 printAttrs(struct Arguments *args)
175 struct vc_ctx_flags flags;
176 struct vc_ctx_caps caps;
179 Evc_get_cflags(args->xid, &flags);
180 Evc_get_ccaps(args->xid, &caps);
182 #define PRINT_VALUES(type, name, var) \
183 WRITE_MSG(1, name ":\n"); \
187 i = vc_lo ## type ## 2text(var); \
197 int bit = ffsull(*(var)); \
206 *(var) &= ~(1ULL << bit); \
210 PRINT_VALUES(bcap, "bcapabilities", &caps.bcaps);
211 PRINT_VALUES(ccap, "ccapabilities", &caps.ccaps);
212 PRINT_VALUES(cflag, "flags", &flags.flagword);
217 int main(int argc, char *argv[])
219 struct Arguments args = {
221 .flags = { .flagword = 0, .mask = 0 },
222 .caps = { .bcaps = 0, .bmask = 0,.ccaps = 0, .cmask = 0 },
227 int c = getopt_long(argc, argv, "+", CMDLINE_OPTIONS, 0);
231 case CMD_HELP : showHelp(1, argv[0], 0);
232 case CMD_VERSION : showVersion();
233 case CMD_SET : args.mode = CMD_SET; break;
234 case CMD_GET : args.mode = CMD_GET; break;
235 case CMD_XID : args.xid = Evc_xidopt2xid(optarg,true); break;
236 case CMD_FLAG : parseFlags(optarg, &args.flags); break;
237 case CMD_CCAP : parseCCaps(optarg, &args.caps); break;
238 case CMD_BCAP : parseBCaps(optarg, &args.caps); break;
239 case CMD_SECURE : parseSecure(&args.flags, &args.caps); break;
241 WRITE_MSG(2, "Try '");
242 WRITE_STR(2, argv[0]);
243 WRITE_MSG(2, " --help' for more information.\n");
249 if (args.xid==VC_NOCTX) args.xid = Evc_get_task_xid(0);
251 if (args.mode == CMD_SET) {
252 if ((args.caps.cmask || args.caps.bmask) &&
253 vc_set_ccaps(args.xid, &args.caps)==-1)
254 perror(ENSC_WRAPPERS_PREFIX "vc_set_ccaps()");
255 else if (args.flags.mask &&
256 vc_set_cflags(args.xid, &args.flags)==-1)
257 perror(ENSC_WRAPPERS_PREFIX "vc_set_flags()");
258 else if (optind<argc)
259 EexecvpD(argv[optind], argv+optind);
263 else if (args.mode == CMD_GET) {
266 EexecvpD(argv[optind], argv+optind);