diff --git a/libs/libc/libc.csv b/libs/libc/libc.csv
index 749feed349..112e9260de 100644
--- a/libs/libc/libc.csv
+++ b/libs/libc/libc.csv
@@ -46,6 +46,7 @@
 "dq_remfirst","queue.h","","FAR dq_entry_t *","FAR dq_queue_t *"
 "dq_remlast","queue.h","","FAR dq_entry_t *","FAR dq_queue_t *"
 "ether_ntoa","netinet/ether.h","","FAR char *","FAR const struct ether_addr *"
+"fchdir","unistd.h","!defined(CONFIG_DISABLE_ENVIRON)","int","int"
 "fclose","stdio.h","defined(CONFIG_FILE_STREAM)","int","FAR FILE *"
 "fdopen","stdio.h","defined(CONFIG_FILE_STREAM)","FAR FILE *","int","FAR const char *"
 "feof","stdio.h","defined(CONFIG_FILE_STREAM)","int","FAR FILE *"
@@ -72,6 +73,8 @@
 "gai_strerror","netdb.h","defined(CONFIG_LIBC_NETDB)","FAR const char *","int"
 "getaddrinfo","netdb.h","defined(CONFIG_LIBC_NETDB)","int","FAR const char *","FAR const char *","FAR const struct addrinfo *","FAR struct addrinfo **"
 "getcwd","unistd.h","!defined(CONFIG_DISABLE_ENVIRON)","FAR char *","FAR char *","size_t"
+"getegid","unistd.h","","gid_t","void"
+"geteuid","unistd.h","","uid_t","void"
 "gethostbyname","netdb.h","defined(CONFIG_LIBC_NETDB)","FAR struct hostent *","FAR const char *"
 "gethostbyname2","netdb.h","defined(CONFIG_LIBC_NETDB)","FAR struct hostent *","FAR const char *","int"
 "gethostname","unistd.h","","int","FAR char *","size_t"
@@ -81,6 +84,7 @@
 "getopterrp","unistd.h","","FAR int *"
 "getoptindp","unistd.h","","FAR int *"
 "getoptoptp","unistd.h","","FAR int *"
+"getpriority","sys/resource.h","","int","int","id_t"
 "gets","stdio.h","defined(CONFIG_FILE_STREAM)","FAR char *","FAR char *"
 "gettimeofday","sys/time.h","","int","FAR struct timeval *","FAR struct timezone *"
 "gmtime","time.h","","FAR struct tm *","FAR const time_t *"
@@ -144,10 +148,12 @@
 "mkstemp","stdlib.h","","int","FAR char *"
 "mktemp","stdlib.h","","FAR char *","FAR char *"
 "mktime","time.h","","time_t","FAR struct tm *"
+"nice","unistd.h","","int","int"
 "ntohl","arpa/inet.h","","uint32_t","uint32_t"
 "ntohs","arpa/inet.h","","uint16_t","uint16_t"
 "perror","stdio.h","defined(CONFIG_FILE_STREAM)","void","FAR const char *"
 "pipe","unistd.h","defined(CONFIG_PIPES) && CONFIG_DEV_PIPE_SIZE > 0","int","int [2]|FAR int *"
+"pipe2","unistd.h","defined(CONFIG_PIPES) && CONFIG_DEV_PIPE_SIZE > 0","int","int [2]|FAR int *","int"
 "posix_fallocate","fcntl.h","","int","off_t","off_t"
 "preadv","sys/uio.h","","ssize_t","int","FAR const struct iovec *","int","off_t"
 "printf","stdio.h","","int","FAR const IPTR char *","..."
@@ -199,6 +205,7 @@
 "sem_init","semaphore.h","","int","FAR sem_t *","int","unsigned int"
 "setlocale","locale.h","defined(CONFIG_LIBC_LOCALE)","FAR char *","int","FAR const char *"
 "setlogmask","syslog.h","","int","int"
+"setpriority","sys/resource.h","","int","int","id_t","int"
 "shutdown","sys/socket.h","defined(CONFIG_NET)","int","int","int"
 "sigaddset","signal.h","","int","FAR sigset_t *","int"
 "sigdelset","signal.h","","int","FAR sigset_t *","int"