/*
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
* Copyright (C) 2009 Pierre-Marc Fournier
* Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; version 2.1 of
- * the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#define _GNU_SOURCE
#include <lttng/ust-dlfcn.h>
#include <unistd.h>
#include <stdio.h>
return retval;
}
+int setuid(uid_t uid)
+{
+ static int (*plibc_func)(uid_t uid) = NULL;
+ int retval;
+ int saved_errno;
+
+ if (plibc_func == NULL) {
+ plibc_func = dlsym(RTLD_NEXT, "setuid");
+ if (plibc_func == NULL) {
+ fprintf(stderr, "libustfork: unable to find \"setuid\" symbol\n");
+ errno = ENOSYS;
+ return -1;
+ }
+ }
+
+ /* Do the real setuid */
+ retval = plibc_func(uid);
+ saved_errno = errno;
+
+ ust_after_setuid();
+
+ errno = saved_errno;
+ return retval;
+}
+
+int setgid(gid_t gid)
+{
+ static int (*plibc_func)(gid_t gid) = NULL;
+ int retval;
+ int saved_errno;
+
+ if (plibc_func == NULL) {
+ plibc_func = dlsym(RTLD_NEXT, "setgid");
+ if (plibc_func == NULL) {
+ fprintf(stderr, "libustfork: unable to find \"setgid\" symbol\n");
+ errno = ENOSYS;
+ return -1;
+ }
+ }
+
+ /* Do the real setgid */
+ retval = plibc_func(gid);
+ saved_errno = errno;
+
+ ust_after_setgid();
+
+ errno = saved_errno;
+ return retval;
+}
+
+int seteuid(uid_t euid)
+{
+ static int (*plibc_func)(uid_t euid) = NULL;
+ int retval;
+ int saved_errno;
+
+ if (plibc_func == NULL) {
+ plibc_func = dlsym(RTLD_NEXT, "seteuid");
+ if (plibc_func == NULL) {
+ fprintf(stderr, "libustfork: unable to find \"seteuid\" symbol\n");
+ errno = ENOSYS;
+ return -1;
+ }
+ }
+
+ /* Do the real seteuid */
+ retval = plibc_func(euid);
+ saved_errno = errno;
+
+ ust_after_seteuid();
+
+ errno = saved_errno;
+ return retval;
+}
+
+int setegid(gid_t egid)
+{
+ static int (*plibc_func)(gid_t egid) = NULL;
+ int retval;
+ int saved_errno;
+
+ if (plibc_func == NULL) {
+ plibc_func = dlsym(RTLD_NEXT, "setegid");
+ if (plibc_func == NULL) {
+ fprintf(stderr, "libustfork: unable to find \"setegid\" symbol\n");
+ errno = ENOSYS;
+ return -1;
+ }
+ }
+
+ /* Do the real setegid */
+ retval = plibc_func(egid);
+ saved_errno = errno;
+
+ ust_after_setegid();
+
+ errno = saved_errno;
+ return retval;
+}
+
+int setreuid(uid_t ruid, uid_t euid)
+{
+ static int (*plibc_func)(uid_t ruid, uid_t euid) = NULL;
+ int retval;
+ int saved_errno;
+
+ if (plibc_func == NULL) {
+ plibc_func = dlsym(RTLD_NEXT, "setreuid");
+ if (plibc_func == NULL) {
+ fprintf(stderr, "libustfork: unable to find \"setreuid\" symbol\n");
+ errno = ENOSYS;
+ return -1;
+ }
+ }
+
+ /* Do the real setreuid */
+ retval = plibc_func(ruid, euid);
+ saved_errno = errno;
+
+ ust_after_setreuid();
+
+ errno = saved_errno;
+ return retval;
+}
+
+int setregid(gid_t rgid, gid_t egid)
+{
+ static int (*plibc_func)(gid_t rgid, gid_t egid) = NULL;
+ int retval;
+ int saved_errno;
+
+ if (plibc_func == NULL) {
+ plibc_func = dlsym(RTLD_NEXT, "setregid");
+ if (plibc_func == NULL) {
+ fprintf(stderr, "libustfork: unable to find \"setregid\" symbol\n");
+ errno = ENOSYS;
+ return -1;
+ }
+ }
+
+ /* Do the real setregid */
+ retval = plibc_func(rgid, egid);
+ saved_errno = errno;
+
+ ust_after_setregid();
+
+ errno = saved_errno;
+ return retval;
+}
+
#ifdef __linux__
struct user_desc;
return retval;
}
+int setns(int fd, int nstype)
+{
+ static int (*plibc_func)(int fd, int nstype) = NULL;
+ int retval;
+ int saved_errno;
+
+ if (plibc_func == NULL) {
+ plibc_func = dlsym(RTLD_NEXT, "setns");
+ if (plibc_func == NULL) {
+ fprintf(stderr, "libustfork: unable to find \"setns\" symbol\n");
+ errno = ENOSYS;
+ return -1;
+ }
+ }
+
+ /* Do the real setns */
+ retval = plibc_func(fd, nstype);
+ saved_errno = errno;
+
+ ust_after_setns();
+
+ errno = saved_errno;
+ return retval;
+}
+
+int unshare(int flags)
+{
+ static int (*plibc_func)(int flags) = NULL;
+ int retval;
+ int saved_errno;
+
+ if (plibc_func == NULL) {
+ plibc_func = dlsym(RTLD_NEXT, "unshare");
+ if (plibc_func == NULL) {
+ fprintf(stderr, "libustfork: unable to find \"unshare\" symbol\n");
+ errno = ENOSYS;
+ return -1;
+ }
+ }
+
+ /* Do the real setns */
+ retval = plibc_func(flags);
+ saved_errno = errno;
+
+ ust_after_unshare();
+
+ errno = saved_errno;
+ return retval;
+}
+
+int setresuid(uid_t ruid, uid_t euid, uid_t suid)
+{
+ static int (*plibc_func)(uid_t ruid, uid_t euid, uid_t suid) = NULL;
+ int retval;
+ int saved_errno;
+
+ if (plibc_func == NULL) {
+ plibc_func = dlsym(RTLD_NEXT, "setresuid");
+ if (plibc_func == NULL) {
+ fprintf(stderr, "libustfork: unable to find \"setresuid\" symbol\n");
+ errno = ENOSYS;
+ return -1;
+ }
+ }
+
+ /* Do the real setresuid */
+ retval = plibc_func(ruid, euid, suid);
+ saved_errno = errno;
+
+ ust_after_setresuid();
+
+ errno = saved_errno;
+ return retval;
+}
+
+int setresgid(gid_t rgid, gid_t egid, gid_t sgid)
+{
+ static int (*plibc_func)(gid_t rgid, gid_t egid, gid_t sgid) = NULL;
+ int retval;
+ int saved_errno;
+
+ if (plibc_func == NULL) {
+ plibc_func = dlsym(RTLD_NEXT, "setresgid");
+ if (plibc_func == NULL) {
+ fprintf(stderr, "libustfork: unable to find \"setresgid\" symbol\n");
+ errno = ENOSYS;
+ return -1;
+ }
+ }
+
+ /* Do the real setresgid */
+ retval = plibc_func(rgid, egid, sgid);
+ saved_errno = errno;
+
+ ust_after_setresgid();
+
+ errno = saved_errno;
+ return retval;
+}
+
#elif defined (__FreeBSD__)
pid_t rfork(int flags)
projects / lttng-ust.git / blobdiff