diff --git a/headers/posix/unistd.h b/headers/posix/unistd.h
index 47f1f7744a..31823f74f3 100644
--- a/headers/posix/unistd.h
+++ b/headers/posix/unistd.h
@@ -28,7 +28,14 @@
 #define F_TEST		3	/* test a section for locks by other processes */
 
 /* POSIX version support */
-#define _POSIX_VERSION			(199009L)
+#define _POSIX_VERSION			(199009L)	/* TODO: Update! */
+
+#define _POSIX_CHOWN_RESTRICTED	1
+#define _POSIX_JOB_CONTROL		1
+#define _POSIX_NO_TRUNC			0
+#define _POSIX_SAVED_IDS		1
+#define _POSIX_VDISABLE			((char)-2)	/* TODO: Check this! */
+#define _POSIX_SEMAPHORES		(200112L)
 
 /* pathconf() constants */
 #define _PC_CHOWN_RESTRICTED	1
@@ -40,11 +47,6 @@
 #define _PC_PIPE_BUF			7
 #define _PC_VDISABLE			8
 #define _PC_LINK_MAX			25
-#define _POSIX_CHOWN_RESTRICTED	9
-#define _POSIX_JOB_CONTROL		10
-#define _POSIX_NO_TRUNC			11
-#define _POSIX_SAVED_IDS		12
-#define _POSIX_VDISABLE			((cc_t) - 2)
 
 /* sysconf() constants */
 #define _SC_ARG_MAX				15
@@ -61,6 +63,9 @@
 #define _SC_GETPW_R_SIZE_MAX	26
 #define _SC_PAGE_SIZE			27
 #define _SC_PAGESIZE			_SC_PAGE_SIZE
+#define _SC_SEM_NSEMS_MAX		28
+#define _SC_SEM_VALUE_MAX		29
+#define _SC_SEMAPHORES			30
 
 /* lseek() constants */
 #ifndef SEEK_SET
diff --git a/headers/private/kernel/posix/realtime_sem.h b/headers/private/kernel/posix/realtime_sem.h
index 04a5dd5033..c657d253dd 100644
--- a/headers/private/kernel/posix/realtime_sem.h
+++ b/headers/private/kernel/posix/realtime_sem.h
@@ -15,6 +15,11 @@
 struct realtime_sem_context;
 
 
+#define MAX_POSIX_SEMS_PER_TEAM	128
+#define MAX_POSIX_SEMS			1024
+#define MAX_POSIX_SEM_VALUE		INT_MAX
+
+
 __BEGIN_DECLS
 
 void		realtime_sem_init();
@@ -22,7 +27,7 @@ void		delete_realtime_sem_context(struct realtime_sem_context* context);
 struct realtime_sem_context* clone_realtime_sem_context(
 					struct realtime_sem_context* context);
 
-status_t	_user_realtime_sem_open(const char* name, int openFlags,
+status_t	_user_realtime_sem_open(const char* name, int openFlagsOrShared,
 					mode_t mode, uint32 semCount, sem_t* userSem,
 					sem_t** _usedUserSem);
 status_t	_user_realtime_sem_close(sem_id semID, sem_t** _deleteUserSem);
diff --git a/src/system/libroot/posix/unistd/conf.c b/src/system/libroot/posix/unistd/conf.c
index a64563efe4..ac55ee292a 100644
--- a/src/system/libroot/posix/unistd/conf.c
+++ b/src/system/libroot/posix/unistd/conf.c
@@ -15,6 +15,7 @@
 #include <SupportDefs.h>
 
 #include <libroot_private.h>
+#include <posix/realtime_sem.h>
 #include <user_group.h>
 
 
@@ -61,6 +62,12 @@ sysconf(int name)
 			return MAX_PASSWD_BUFFER_SIZE;
 		case _SC_PAGE_SIZE:
 			return B_PAGE_SIZE;
+		case _SC_SEM_NSEMS_MAX:
+			return MAX_POSIX_SEMS;
+		case _SC_SEM_VALUE_MAX:
+			return MAX_POSIX_SEM_VALUE;
+		case _SC_SEMAPHORES:
+			return _POSIX_SEMAPHORES;
 	}
 
 	return -1;
@@ -71,10 +78,8 @@ long
 fpathconf(int fd, int name)
 {
 	switch (name) {
-		// ToDo: out of what stupidity have those been defined differently?
 		case _PC_CHOWN_RESTRICTED:
-		case _POSIX_CHOWN_RESTRICTED:
-			return 1;
+			return _POSIX_CHOWN_RESTRICTED;
 
 		case _PC_MAX_CANON:
 			return MAX_CANON;
@@ -86,8 +91,7 @@ fpathconf(int fd, int name)
 			return NAME_MAX;
 
 		case _PC_NO_TRUNC:
-		case _POSIX_NO_TRUNC:
-			return 0;
+			return _POSIX_NO_TRUNC;
 
 		case _PC_PATH_MAX:
 			return PATH_MAX;
@@ -98,10 +102,8 @@ fpathconf(int fd, int name)
 		case _PC_LINK_MAX:
 			return LINK_MAX;
 
-		// _PC_VDISABLE
-		// _POSIX_VDISABLE
-		// _POSIX_JOB_CONTROL
-		// _POSIX_SAVED_IDS
+		case _PC_VDISABLE:
+			return _POSIX_VDISABLE;
 	}
 
 	return -1;