3 // Copyright (C) 2005 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_internal/sys_clone.h>
25 #include <lib/internal.h>
35 #define ENSC_WRAPPERS_PREFIX "vdlimit: "
36 #define ENSC_WRAPPERS_UNISTD 1
37 #define ENSC_WRAPPERS_VSERVER 1
40 #define CMD_HELP 0x1000
41 #define CMD_VERSION 0x1001
43 int wrapper_exit_code = 1;
47 { "help", no_argument, 0, CMD_HELP },
48 { "version", no_argument, 0, CMD_VERSION },
49 { "xid", required_argument, 0, 'x' },
50 { "set", required_argument, 0, 's' },
51 { "remove", no_argument, 0, 'd' },
52 { "flags", required_argument, 0, 'f' },
57 showHelp(int fd, char const *cmd)
59 WRITE_MSG(fd, "Usage: ");
62 " --xid <xid> [--flags <flags>] (--set <limit>=<value>|--remove) <mount point>\n"
64 " --set|-s <limit>=<value> ... set <limit> to <value>, where limit is \n"
65 " one of: space_used, space_total, inodes_used,\n"
66 " inodes_total, reserved\n"
67 " --remove|-d ... removes the disk limit for <xid> from <mount point>\n"
69 "Please report bugs to " PACKAGE_BUGREPORT "\n");
78 "vdlimit " VERSION " -- manages disk limits\n"
79 "This program is part of " PACKAGE_STRING "\n\n"
80 "Copyright (C) 2005 Enrico Scholz\n"
81 VERSION_COPYRIGHT_DISCLAIMER);
86 setDlimit(char const *filename, xid_t xid, uint32_t flags, struct vc_ctx_dlimit const *limit)
88 if (vc_get_dlimit(filename, xid, flags, 0) == -1) {
89 if (vc_add_dlimit(filename, xid, flags) == -1) {
90 perror(ENSC_WRAPPERS_PREFIX "vc_add_dlimit()");
91 exit(wrapper_exit_code);
94 if (vc_set_dlimit(filename, xid, flags, limit) == -1) {
95 perror(ENSC_WRAPPERS_PREFIX "vc_set_dlimit()");
96 exit(wrapper_exit_code);
101 remDlimit(char const *filename, xid_t xid, uint32_t flags)
103 if (vc_rem_dlimit(filename, xid, flags) == -1) {
104 perror(ENSC_WRAPPERS_PREFIX "vc_rem_dlimit()");
105 exit(wrapper_exit_code);
110 writeInt(int fd, char const *prefix, int val)
112 char buf[sizeof(val)*3 + 2];
113 size_t len = utilvserver_fmt_int(buf, val);
116 WRITE_STR(fd, prefix);
117 Vwrite(fd, buf, len);
121 printDlimit(char const *filename, xid_t xid, uint32_t flags, bool formatted)
123 struct vc_ctx_dlimit limit;
125 if (vc_get_dlimit(filename, xid, flags, &limit) == -1) {
126 perror(ENSC_WRAPPERS_PREFIX "vc_get_dlimit()");
127 exit(wrapper_exit_code);
131 writeInt (1, 0, xid);
133 WRITE_STR(1, filename);
134 writeInt (1, "\nspace_used=", limit.space_used);
135 writeInt (1, "\nspace_total=", limit.space_total);
136 writeInt (1, "\ninodes_used=", limit.inodes_used);
137 writeInt (1, "\ninodes_total=", limit.inodes_total);
138 writeInt (1, "\nreserved=", limit.reserved);
142 writeInt (1, 0, xid);
143 writeInt (1, " ", limit.space_used);
144 writeInt (1, " ", limit.space_total);
145 writeInt (1, " ", limit.inodes_used);
146 writeInt (1, " ", limit.inodes_total);
147 writeInt (1, " ", limit.reserved);
149 WRITE_STR(1, filename);
156 setDLimitField(struct vc_ctx_dlimit *dst, char const *opt)
159 char const * const orig_opt = opt;
161 #define GET_VAL_PTR(CMP, VAL) \
162 (strncmp(opt, CMP "=", sizeof(CMP))==0) ? \
163 (opt+=sizeof(CMP), &VAL) : 0
165 if ((ptr=GET_VAL_PTR("space_used", dst->space_used))!=0) {}
166 else if ((ptr=GET_VAL_PTR("space_total", dst->space_total))!=0) {}
167 else if ((ptr=GET_VAL_PTR("inodes_used", dst->inodes_used))!=0) {}
168 else if ((ptr=GET_VAL_PTR("inodes_total", dst->inodes_total))!=0) {}
169 else if ((ptr=GET_VAL_PTR("reserved", dst->reserved))!=0) {}
174 if (ptr!=0 && *ptr==VC_CDLIM_KEEP) {
176 long val = strtol(opt, &endptr, 0);
178 if (*opt==0 || *endptr!='\0') {
179 WRITE_MSG(2, ENSC_WRAPPERS_PREFIX "can not parse number in '");
180 WRITE_STR(2, orig_opt);
188 WRITE_MSG(2, ENSC_WRAPPERS_PREFIX "value already set in '");
189 WRITE_STR(2, orig_opt);
194 WRITE_MSG(2, ENSC_WRAPPERS_PREFIX "unknown limit in '");
195 WRITE_STR(2, orig_opt);
203 int main(int argc, char *argv[])
206 bool do_remove = false;
207 xid_t xid = VC_NOCTX;
212 struct vc_ctx_dlimit limit = {
213 .space_used = VC_CDLIM_KEEP,
214 .space_total = VC_CDLIM_KEEP,
215 .inodes_used = VC_CDLIM_KEEP,
216 .inodes_total = VC_CDLIM_KEEP,
217 .reserved = VC_CDLIM_KEEP
221 int c = getopt_long(argc, argv, "+x:s:df:", CMDLINE_OPTIONS, 0);
225 case CMD_HELP : showHelp(1, argv[0]);
226 case CMD_VERSION : showVersion();
227 case 'x' : xid = Evc_xidopt2xid(optarg, true); break;
229 if (!setDLimitField(&limit, optarg))
234 case 'd' : do_remove = true; break;
237 flags = strtol(optarg, &endptr, 0);
238 if ((flags == 0 && errno != 0) || *endptr != '\0') {
239 WRITE_MSG(2, "Invalid flags argument: '");
240 WRITE_STR(2, optarg);
241 WRITE_MSG(2, "'; try '--help' for more information\n");
248 WRITE_MSG(2, "Try '");
249 WRITE_STR(2, argv[0]);
250 WRITE_MSG(2, " --help' for more information.\n");
256 sum = ((do_set ? 1 : 0) + (do_remove ? 1 : 0));
259 WRITE_MSG(2, "Can not specify multiple operations; try '--help' for more information\n");
260 else if (optind==argc)
261 WRITE_MSG(2, "No mount point specified; try '--help' for more information\n");
262 else if (xid==VC_NOCTX)
263 WRITE_MSG(2, "No xid specified; try '--help' for more information\n");
265 for (; optind < argc; ++optind) {
266 if (do_set) setDlimit(argv[optind], xid, flags, &limit);
267 else if (do_remove) remDlimit(argv[optind], xid, flags);
268 else printDlimit(argv[optind], xid, flags, true);