projects / ust.git / blame
| Commit | Line | Data |
|---|---|---|
| 2d99476b PMF |
1 | /* Copyright (C) 2009 Pierre-Marc Fournier |
| 2 | * | |
| 3 | * This library is free software; you can redistribute it and/or | |
| 4 | * modify it under the terms of the GNU Lesser General Public | |
| 5 | * License as published by the Free Software Foundation; either | |
| 6 | * version 2.1 of the License, or (at your option) any later version. | |
| 7 | * | |
| 8 | * This library is distributed in the hope that it will be useful, | |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 11 | * Lesser General Public License for more details. | |
| 12 | * | |
| 13 | * You should have received a copy of the GNU Lesser General Public | |
| 14 | * License along with this library; if not, write to the Free Software | |
| 15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 16 | */ | |
| 17 | ||
| 18 | #define _GNU_SOURCE | |
| 19 | #include <dlfcn.h> | |
| 20 | #include <unistd.h> | |
| 21 | #include <stdio.h> | |
| 22 | ||
| 23 | pid_t fork(void) | |
| 24 | { | |
| 25 | static pid_t (*plibc_func)(void) = NULL; | |
| 26 | ||
| 27 | pid_t retval; | |
| 28 | ||
| 29 | if(plibc_func == NULL) { | |
| 30 | plibc_func = dlsym(RTLD_NEXT, "fork"); | |
| 31 | if(plibc_func == NULL) { | |
| 32 | fprintf(stderr, "libcwrap: unable to find fork\n"); | |
| 33 | return NULL; | |
| 34 | } | |
| 35 | } | |
| 36 | ||
| 2d99476b PMF |
37 | retval = plibc_func(); |
| 38 | ||
| 39 | if(retval == 0) | |
| 40 | ust_fork(); | |
| 41 | ||
| 42 | return retval; | |
| 43 | } |