diff --git a/options/posix/generic/mqueue.cpp b/options/posix/generic/mqueue.cpp
index d63541978a..3719028cd5 100644
--- a/options/posix/generic/mqueue.cpp
+++ b/options/posix/generic/mqueue.cpp
@@ -20,3 +20,8 @@ mqd_t mq_open(const char *, int, ...) {
 	__ensure(!"Not implemented");
 	__builtin_unreachable();
 }
+
+int mq_close(mqd_t) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
diff --git a/options/posix/generic/nl_types.cpp b/options/posix/generic/nl_types.cpp
new file mode 100644
index 0000000000..e8d28b941e
--- /dev/null
+++ b/options/posix/generic/nl_types.cpp
@@ -0,0 +1,10 @@
+#include <nl_types.h>
+
+#include <bits/ensure.h>
+#include <mlibc/debug.hpp>
+
+char *catgets(nl_catd, int, int, const char *) {
+    __ensure(!"Not implemented");
+	__builtin_unreachable();
+}
+
diff --git a/options/posix/generic/posix_string.cpp b/options/posix/generic/posix_string.cpp
index 838b85b012..29b16ce1a1 100644
--- a/options/posix/generic/posix_string.cpp
+++ b/options/posix/generic/posix_string.cpp
@@ -3,6 +3,7 @@
 #endif
 
 #include <bits/ensure.h>
+#include <bits/posix/posix_string.h>
 #include <stdlib.h>
 #include <string.h>
 #include <strings.h>
@@ -152,6 +153,11 @@ void *memrchr(const void *m, int c, size_t n) {
 	return 0;
 }
 
+void explicit_bzero(void *s, size_t n) {
+	s = memset(s, 0, n);
+	asm volatile("" : : "r"(s) : "memory");
+}
+
 char *strerror_l(int errnum, locale_t) {
 	mlibc::infoLogger() << "mlibc: strerror_l locale is ignored!" << frg::endlog;
 	return strerror(errnum);
diff --git a/options/posix/generic/sys-uio.cpp b/options/posix/generic/sys-uio.cpp
index 0f14bc03ec..607b224878 100644
--- a/options/posix/generic/sys-uio.cpp
+++ b/options/posix/generic/sys-uio.cpp
@@ -65,3 +65,13 @@ ssize_t pwritev(int, const struct iovec *, int, off_t) {
 	__ensure(!"Not implemented");
 	__builtin_unreachable();
 }
+
+ssize_t process_vm_readv(pid_t, const struct iovec *, unsigned long, const struct iovec *, unsigned long, unsigned long) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
+
+ssize_t process_vm_writev(pid_t, const struct iovec *, unsigned long, const struct iovec *, unsigned long, unsigned long) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
diff --git a/options/posix/generic/termios.cpp b/options/posix/generic/termios.cpp
index 631456aa53..09c26b9744 100644
--- a/options/posix/generic/termios.cpp
+++ b/options/posix/generic/termios.cpp
@@ -101,3 +101,7 @@ int tcsetattr(int fd, int opts, const struct termios *attr) {
 	return 0;
 }
 
+int cfsetspeed(struct termios *, speed_t) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
diff --git a/options/posix/include/bits/posix/posix_string.h b/options/posix/include/bits/posix/posix_string.h
index 1e2096ae10..1e76ab138d 100644
--- a/options/posix/include/bits/posix/posix_string.h
+++ b/options/posix/include/bits/posix/posix_string.h
@@ -43,6 +43,7 @@ char *strcasestr(const char *__s1, const char *__s2);
 	(char *) memcpy(__buf, __str, __len - 1); \
 })
 void *memrchr(const void *__m, int __c, size_t __n);
+void explicit_bzero(void *__s, size_t __n);
 #endif /* defined(_GNU_SOURCE) */
 
 /* BSD extensions */
diff --git a/options/posix/include/dlfcn.h b/options/posix/include/dlfcn.h
index 4e63279935..b45625115c 100644
--- a/options/posix/include/dlfcn.h
+++ b/options/posix/include/dlfcn.h
@@ -3,6 +3,7 @@
 #define _DLFCN_H
 
 #include <mlibc-config.h>
+#include <bits/size_t.h>
 
 #define RTLD_LOCAL 0
 #define RTLD_LAZY 1
@@ -19,6 +20,8 @@
 #define RTLD_DL_LINKMAP 2
 
 #define RTLD_DI_LINKMAP 2
+#define RTLD_DI_SERINFO 4
+#define RTLD_DI_SERINFOSIZE 5
 
 #ifdef __cplusplus
 extern "C" {
@@ -58,6 +61,17 @@ typedef struct {
 #define DLFO_EH_SEGMENT_TYPE PT_GNU_EH_FRAME
 #endif
 
+typedef struct {
+	char *dls_name;
+	unsigned int dls_flags;
+} Dl_serpath;
+
+typedef struct {
+	size_t dls_size;
+	unsigned int dls_cnt;
+	Dl_serpath dls_serpath[1];
+} Dl_serinfo;
+
 struct dl_find_object {
 	unsigned long long dlfo_flags;
 	void *dlfo_map_start;
diff --git a/options/posix/include/mqueue.h b/options/posix/include/mqueue.h
index cbee138e5c..485607f3ea 100644
--- a/options/posix/include/mqueue.h
+++ b/options/posix/include/mqueue.h
@@ -15,6 +15,7 @@ int mq_getattr(mqd_t __mqdes, struct mq_attr *__attr);
 int mq_setattr(mqd_t __mqdes, const struct mq_attr *__restrict__ __newattr, struct mq_attr *__restrict__ __oldattr);
 int mq_unlink(const char *__name);
 mqd_t mq_open(const char *__name, int __flags, ...);
+int mq_close(mqd_t __mqdes);
 
 #endif /* !__MLIBC_ABI_ONLY */
 
diff --git a/options/posix/include/nl_types.h b/options/posix/include/nl_types.h
index 8878629551..754f262933 100644
--- a/options/posix/include/nl_types.h
+++ b/options/posix/include/nl_types.h
@@ -1,6 +1,20 @@
 #ifndef NL_TYPES_H
 #define NL_TYPES_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 
+typedef void *nl_catd;
+
+#ifndef __MLIBC_ABI_ONLY
+
+char *catgets(nl_catd __catalog, int __set, int __number, const char *__string);
+
+#endif /* !__MLIBC_ABI_ONLY */
+
+#ifdef __cplusplus
+}
+#endif
 
 #endif /* NL_TYPES_H */
diff --git a/options/posix/include/sys/ipc.h b/options/posix/include/sys/ipc.h
index e8c1714e1a..091bef3295 100644
--- a/options/posix/include/sys/ipc.h
+++ b/options/posix/include/sys/ipc.h
@@ -31,13 +31,13 @@ extern "C" {
 typedef int key_t;
 
 struct ipc64_perm {
-	key_t __ipc_perm_key;
+	key_t __key;
 	uid_t uid;
 	gid_t gid;
 	uid_t cuid;
 	gid_t cgid;
 	mode_t mode;
-	short __ipc_perm_seq;
+	short __seq;
 	short __pad;
 	unsigned long __unused[2];
 };
diff --git a/options/posix/include/sys/msg.h b/options/posix/include/sys/msg.h
index f62220ac66..be4afe20ec 100644
--- a/options/posix/include/sys/msg.h
+++ b/options/posix/include/sys/msg.h
@@ -9,6 +9,17 @@
 extern "C" {
 #endif
 
+struct msginfo {
+	int msgpool;
+	int msgmap;
+	int msgmax;
+	int msgmnb;
+	int msgmni;
+	int msgssz;
+	int msgtql;
+	unsigned short int msgseg;
+};
+
 #ifndef __MLIBC_ABI_ONLY
 
 int msgget(key_t __key, int __msgflg);
diff --git a/options/posix/include/sys/sem.h b/options/posix/include/sys/sem.h
index d98f91f3f8..9ebc9f3928 100644
--- a/options/posix/include/sys/sem.h
+++ b/options/posix/include/sys/sem.h
@@ -12,11 +12,17 @@ extern "C" {
 #define GETPID 11
 #define GETVAL 12
 #define GETALL 13
+#define GETNCNT 14
+#define GETZCNT 15
 #define SETVAL 16
 #define SETALL 17
 
 #define SEM_UNDO 0x1000
 
+#define SEM_STAT 18
+#define SEM_INFO 19
+#define SEM_STAT_ANY 20
+
 struct sembuf {
 	unsigned short int sem_num;
 	short int sem_op;
@@ -31,6 +37,19 @@ struct semid_ds {
 	unsigned long   sem_nsems;
 };
 
+struct seminfo {
+	int semmap;
+	int semmni;
+	int semmns;
+	int semmnu;
+	int semmsl;
+	int semopm;
+	int semume;
+	int semusz;
+	int semvmx;
+	int semaem;
+};
+
 #ifndef __MLIBC_ABI_ONLY
 
 int semget(key_t __key, int __nsems, int __semflg);
diff --git a/options/posix/include/sys/uio.h b/options/posix/include/sys/uio.h
index 1547036d83..7e3c7aa731 100644
--- a/options/posix/include/sys/uio.h
+++ b/options/posix/include/sys/uio.h
@@ -1,6 +1,7 @@
 #ifndef _SYS_UIO_H
 #define _SYS_UIO_H
 
+#include <abi-bits/pid_t.h>
 #include <bits/posix/iovec.h>
 #include <bits/ssize_t.h>
 #include <bits/off_t.h>
@@ -22,6 +23,12 @@ ssize_t writev(int __fd, const struct iovec *__iov, int __iovcnt);
 ssize_t preadv(int __fd, const struct iovec *__iov, int __iovcnt, off_t __offset);
 ssize_t pwritev(int __fd, const struct iovec *__iov, int __iovcnt, off_t __offset);
 
+// Linux extensions
+ssize_t process_vm_readv(pid_t __pid, const struct iovec *__local_iov, unsigned long __liovcnt, const struct iovec *__remote_iov,
+						unsigned long __riovcnt, unsigned long __flags);
+ssize_t process_vm_writev(pid_t __pid, const struct iovec *__local_iov, unsigned long __liovcnt, const struct iovec *__remote_iov,
+						unsigned long __riovcnt, unsigned long __flags);
+
 #endif /* !__MLIBC_ABI_ONLY */
 
 #ifdef __cplusplus
diff --git a/options/posix/include/syslog.h b/options/posix/include/syslog.h
index c984be1696..93412b1afe 100644
--- a/options/posix/include/syslog.h
+++ b/options/posix/include/syslog.h
@@ -55,6 +55,58 @@ extern "C" {
 #define LOG_INFO 6
 #define LOG_DEBUG 7
 
+#if defined SYSLOG_NAMES && defined __USE_MISC
+typedef struct _code {
+	char *c_name;
+	int	c_val;
+} CODE;
+
+#define	INTERNAL_NOPRI 0x10
+#define	INTERNAL_MARK LOG_MAKEPRI(LOG_NFACILITIES << 3, 0)
+
+CODE prioritynames[] = {
+    { "alert", LOG_ALERT },
+    { "crit", LOG_CRIT },
+    { "debug", LOG_DEBUG },
+    { "emerg", LOG_EMERG },
+    { "err", LOG_ERR },
+    { "error", LOG_ERR },		/* DEPRECATED */
+    { "info", LOG_INFO },
+    { "none", INTERNAL_NOPRI },		/* INTERNAL */
+    { "notice", LOG_NOTICE },
+    { "panic", LOG_EMERG },		/* DEPRECATED */
+    { "warn", LOG_WARNING },		/* DEPRECATED */
+    { "warning", LOG_WARNING },
+    { NULL, -1 }
+};
+
+CODE facilitynames[] = {
+    { "auth", LOG_AUTH },
+    { "authpriv", LOG_AUTHPRIV },
+    { "cron", LOG_CRON },
+    { "daemon", LOG_DAEMON },
+    { "ftp", LOG_FTP },
+    { "kern", LOG_KERN },
+    { "lpr", LOG_LPR },
+    { "mail", LOG_MAIL },
+    { "mark", INTERNAL_MARK },		/* INTERNAL */
+    { "news", LOG_NEWS },
+    { "security", LOG_AUTH },		/* DEPRECATED */
+    { "syslog", LOG_SYSLOG },
+    { "user", LOG_USER },
+    { "uucp", LOG_UUCP },
+    { "local0", LOG_LOCAL0 },
+    { "local1", LOG_LOCAL1 },
+    { "local2", LOG_LOCAL2 },
+    { "local3", LOG_LOCAL3 },
+    { "local4", LOG_LOCAL4 },
+    { "local5", LOG_LOCAL5 },
+    { "local6", LOG_LOCAL6 },
+    { "local7", LOG_LOCAL7 },
+    { NULL, -1 }
+};
+#endif
+
 #ifndef __MLIBC_ABI_ONLY
 
 void closelog(void);
diff --git a/options/posix/include/termios.h b/options/posix/include/termios.h
index 7f62142e4e..33f3776997 100644
--- a/options/posix/include/termios.h
+++ b/options/posix/include/termios.h
@@ -81,6 +81,7 @@ int tcgetattr(int fd, struct termios *__attr);
 pid_t tcgetsid(int __fd);
 int tcsendbreak(int __fd, int __duration);
 int tcsetattr(int __fd, int __optional_actions, const struct termios *__attr);
+int cfsetspeed(struct termios *__tios, speed_t __speed);
 
 #endif /* !__MLIBC_ABI_ONLY */
 
diff --git a/options/posix/meson.build b/options/posix/meson.build
index 531188b2f6..6c67dfefef 100644
--- a/options/posix/meson.build
+++ b/options/posix/meson.build
@@ -14,6 +14,7 @@ libc_sources += files(
 	'generic/lookup.cpp',
 	'generic/netdb.cpp',
 	'generic/net-if.cpp',
+	'generic/nl_types.cpp',
 	'generic/poll.cpp',
 	'generic/posix_ctype.cpp',
 	'generic/posix-file-io.cpp',