3 // Copyright (C) 2003 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.
18 // Saves current ctx + vserver-info into 'argv[1] + /run' which must be a dead
29 #include <sys/types.h>
36 #define ENSC_WRAPPERS_PREFIX "save_ctxinfo: "
37 #define ENSC_WRAPPERS_VSERVER 1
38 #define ENSC_WRAPPERS_UNISTD 1
39 #define ENSC_WRAPPERS_FCNTL 1
42 int wrapper_exit_code = 255;
45 checkParams(int argc, char UNUSED * argv[])
48 WRITE_MSG(2, "Usage: save_ctxinfo <VSERVER_DIR> <cmd> <args>*\n");
53 int main(int argc, char *argv[])
55 char runfile[(checkParams(argc,argv),strlen(argv[1])) + sizeof("/run.rev/99999")];
56 char dstfile[PATH_MAX];
58 char buf[sizeof(int)*3+2];
61 ssize_t len1 = strlen(argv[1]);
63 strcpy(runfile, argv[1]);
64 strcpy(runfile+len1, "/run");
66 ctx=Evc_get_task_xid(0);
69 WRITE_MSG(2, "save_ctxinfo: Can not operate in context 0\n");
73 if (reinterpret_cast(unsigned int)(ctx)>99999) {
74 WRITE_MSG(2, "save_ctxinfo: unexpected context\n");
78 len = EreadlinkD(runfile, dstfile, sizeof(dstfile)-1);
80 len = utilvserver_fmt_uint(buf, ctx);
82 fd = EopenD(dstfile, O_EXCL|O_CREAT|O_WRONLY, 0644);
83 if (write(fd, buf, len) !=len ||
84 write(fd, "\n", 1) !=1) {
85 perror("save_ctxinfo: write()");
90 strcat(runfile, ".rev/");
91 strncat(runfile, buf, len);
93 EsymlinkD(argv[1], runfile);
95 Eexecv(argv[2], argv+2);