diff --git a/ap/libc/glibc/glibc-2.23/pwd/Makefile b/ap/libc/glibc/glibc-2.23/pwd/Makefile
new file mode 100644
index 0000000..5c7f6a2
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/pwd/Makefile
@@ -0,0 +1,42 @@
+# Copyright (C) 1991-2016 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+
+# The GNU C 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; either
+# version 2.1 of the License, or (at your option) any later version.
+
+# The GNU C 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 the GNU C Library; if not, see
+# <http://www.gnu.org/licenses/>.
+
+#
+#	Sub-makefile for pwd portion of the library.
+#
+subdir	:= pwd
+
+include ../Makeconfig
+
+headers := pwd.h
+
+routines := fgetpwent getpw putpwent \
+	    getpwent getpwnam getpwuid \
+	    getpwent_r getpwnam_r getpwuid_r fgetpwent_r
+
+tests := tst-getpw tst-putpwent
+
+include ../Rules
+
+ifeq ($(have-thread-library),yes)
+
+CFLAGS-getpwent_r.c = -fexceptions
+CFLAGS-getpwent.c = -fexceptions
+CFLAGS-getpw.c = -fexceptions
+CFLAGS-fgetpwent_r.c = $(libio-mtsafe)
+
+endif
diff --git a/ap/libc/glibc/glibc-2.23/pwd/Versions b/ap/libc/glibc/glibc-2.23/pwd/Versions
new file mode 100644
index 0000000..b569700
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/pwd/Versions
@@ -0,0 +1,19 @@
+libc {
+  GLIBC_2.0 {
+    # e*
+    endpwent;
+
+    # f*
+    fgetpwent; fgetpwent_r;
+
+    # g*
+    getpw; getpwent; getpwent_r; getpwnam; getpwnam_r; getpwuid; getpwuid_r;
+
+    # p*
+    putpwent; setpwent;
+  }
+  GLIBC_2.1.2 {
+    # g*
+    getpwent_r; getpwuid_r; getpwnam_r;
+  }
+}
diff --git a/ap/libc/glibc/glibc-2.23/pwd/fgetpwent.c b/ap/libc/glibc/glibc-2.23/pwd/fgetpwent.c
new file mode 100644
index 0000000..811b008
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/pwd/fgetpwent.c
@@ -0,0 +1,84 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C 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; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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 the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <libc-lock.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+
+/* We need to protect the dynamic buffer handling.  */
+__libc_lock_define_initialized (static, lock);
+
+libc_freeres_ptr (static char *buffer);
+
+/* Read one entry from the given stream.  */
+struct passwd *
+fgetpwent (FILE *stream)
+{
+  static size_t buffer_size;
+  static struct passwd resbuf;
+  fpos_t pos;
+  struct passwd *result;
+  int save;
+
+  if (fgetpos (stream, &pos) != 0)
+    return NULL;
+
+  /* Get lock.  */
+  __libc_lock_lock (lock);
+
+  /* Allocate buffer if not yet available.  */
+  if (buffer == NULL)
+    {
+      buffer_size = NSS_BUFLEN_PASSWD;
+      buffer = malloc (buffer_size);
+    }
+
+  while (buffer != NULL
+	 && (__fgetpwent_r (stream, &resbuf, buffer, buffer_size, &result)
+	     == ERANGE))
+    {
+      char *new_buf;
+      buffer_size += NSS_BUFLEN_PASSWD;
+      new_buf = realloc (buffer, buffer_size);
+      if (new_buf == NULL)
+	{
+	  /* We are out of memory.  Free the current buffer so that the
+	     process gets a chance for a normal termination.  */
+	  save = errno;
+	  free (buffer);
+	  __set_errno (save);
+	}
+      buffer = new_buf;
+
+      /* Reset the stream.  */
+      if (fsetpos (stream, &pos) != 0)
+	buffer = NULL;
+    }
+
+  if (buffer == NULL)
+    result = NULL;
+
+  /* Release lock.  Preserve error value.  */
+  save = errno;
+  __libc_lock_unlock (lock);
+  __set_errno (save);
+
+  return result;
+}
diff --git a/ap/libc/glibc/glibc-2.23/pwd/fgetpwent_r.c b/ap/libc/glibc/glibc-2.23/pwd/fgetpwent_r.c
new file mode 100644
index 0000000..ea8c7e0
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/pwd/fgetpwent_r.c
@@ -0,0 +1,110 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C 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; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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 the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <ctype.h>
+#include <errno.h>
+#include <stdio.h>
+#include <pwd.h>
+
+#define flockfile(s) _IO_flockfile (s)
+#define funlockfile(s) _IO_funlockfile (s)
+
+/* Define a line parsing function using the common code
+   used in the nss_files module.  */
+
+#define STRUCTURE	passwd
+#define ENTNAME		pwent
+struct pwent_data {};
+
+#include <nss/nss_files/files-parse.c>
+LINE_PARSER
+(,
+ STRING_FIELD (result->pw_name, ISCOLON, 0);
+ if (line[0] == '\0'
+     && (result->pw_name[0] == '+' || result->pw_name[0] == '-'))
+   {
+     /* This a special case.  We allow lines containing only a `+' sign
+	since this is used for nss_compat.  All other services will
+	reject this entry later.  Initialize all other fields now.  */
+     result->pw_passwd = NULL;
+     result->pw_uid = 0;
+     result->pw_gid = 0;
+     result->pw_gecos = NULL;
+     result->pw_dir = NULL;
+     result->pw_shell = NULL;
+   }
+ else
+   {
+     STRING_FIELD (result->pw_passwd, ISCOLON, 0);
+     if (result->pw_name[0] == '+' || result->pw_name[0] == '-')
+       {
+	 INT_FIELD_MAYBE_NULL (result->pw_uid, ISCOLON, 0, 10, , 0)
+	 INT_FIELD_MAYBE_NULL (result->pw_gid, ISCOLON, 0, 10, , 0)
+       }
+     else
+       {
+	 INT_FIELD (result->pw_uid, ISCOLON, 0, 10,)
+	 INT_FIELD (result->pw_gid, ISCOLON, 0, 10,)
+       }
+     STRING_FIELD (result->pw_gecos, ISCOLON, 0);
+     STRING_FIELD (result->pw_dir, ISCOLON, 0);
+     result->pw_shell = line;
+   }
+ )
+
+
+/* Read one entry from the given stream.  */
+int
+__fgetpwent_r (FILE *stream, struct passwd *resbuf, char *buffer,
+	       size_t buflen, struct passwd **result)
+{
+  char *p;
+
+  flockfile (stream);
+  do
+    {
+      buffer[buflen - 1] = '\xff';
+      p = fgets_unlocked (buffer, buflen, stream);
+      if (p == NULL && feof_unlocked (stream))
+	{
+	  funlockfile (stream);
+	  *result = NULL;
+	  __set_errno (ENOENT);
+	  return errno;
+	}
+      if (p == NULL || buffer[buflen - 1] != '\xff')
+	{
+	  funlockfile (stream);
+	  *result = NULL;
+	  __set_errno (ERANGE);
+	  return errno;
+	}
+
+      /* Skip leading blanks.  */
+      while (isspace (*p))
+	++p;
+    } while (*p == '\0' || *p == '#' ||	/* Ignore empty and comment lines.  */
+	     /* Parse the line.  If it is invalid, loop to
+		get the next line of the file to parse.  */
+	     ! parse_line (p, resbuf, (void *) buffer, buflen, &errno));
+
+  funlockfile (stream);
+
+  *result = resbuf;
+  return 0;
+}
+weak_alias (__fgetpwent_r, fgetpwent_r)
diff --git a/ap/libc/glibc/glibc-2.23/pwd/getpw.c b/ap/libc/glibc/glibc-2.23/pwd/getpw.c
new file mode 100644
index 0000000..0c4b5a3
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/pwd/getpw.c
@@ -0,0 +1,62 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C 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; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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 the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <alloca.h>
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <pwd.h>
+
+
+/* Re-construct the password-file line for the given uid
+   in the given buffer.  This knows the format that the caller
+   will expect, but this need not be the format of the password file.  */
+
+int __getpw (__uid_t uid, char *buf);
+
+int
+__getpw (__uid_t uid, char *buf)
+{
+  size_t buflen;
+  char *tmpbuf;
+  struct passwd resbuf, *p;
+
+  if (buf == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  buflen = __sysconf (_SC_GETPW_R_SIZE_MAX);
+  tmpbuf = alloca (buflen);
+
+  if (__getpwuid_r (uid, &resbuf, tmpbuf, buflen, &p) != 0)
+    return -1;
+
+  if (p == NULL)
+    return -1;
+
+  if (sprintf (buf, "%s:%s:%lu:%lu:%s:%s:%s", p->pw_name, p->pw_passwd,
+	       (unsigned long int) p->pw_uid, (unsigned long int) p->pw_gid,
+	       p->pw_gecos, p->pw_dir, p->pw_shell) < 0)
+    return -1;
+
+  return 0;
+}
+weak_alias (__getpw, getpw)
+
+link_warning (getpw, "the `getpw' function is dangerous and should not be used.")
diff --git a/ap/libc/glibc/glibc-2.23/pwd/getpwent.c b/ap/libc/glibc/glibc-2.23/pwd/getpwent.c
new file mode 100644
index 0000000..fa8d340
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/pwd/getpwent.c
@@ -0,0 +1,29 @@
+/* Copyright (C) 1996-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+   The GNU C 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; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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 the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <pwd.h>
+
+
+#define LOOKUP_TYPE	struct passwd
+#define SETFUNC_NAME	setpwent
+#define	GETFUNC_NAME	getpwent
+#define	ENDFUNC_NAME	endpwent
+#define DATABASE_NAME	passwd
+#define BUFLEN		NSS_BUFLEN_PASSWD
+
+#include "../nss/getXXent.c"
diff --git a/ap/libc/glibc/glibc-2.23/pwd/getpwent_r.c b/ap/libc/glibc/glibc-2.23/pwd/getpwent_r.c
new file mode 100644
index 0000000..375900c
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/pwd/getpwent_r.c
@@ -0,0 +1,29 @@
+/* Copyright (C) 1996-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+   The GNU C 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; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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 the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <pwd.h>
+
+
+#define LOOKUP_TYPE	struct passwd
+#define SETFUNC_NAME	setpwent
+#define	GETFUNC_NAME	getpwent
+#define	ENDFUNC_NAME	endpwent
+#define DATABASE_NAME	passwd
+#define BUFLEN		NSS_BUFLEN_PASSWD
+
+#include "../nss/getXXent_r.c"
diff --git a/ap/libc/glibc/glibc-2.23/pwd/getpwnam.c b/ap/libc/glibc/glibc-2.23/pwd/getpwnam.c
new file mode 100644
index 0000000..472ac69
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/pwd/getpwnam.c
@@ -0,0 +1,29 @@
+/* Copyright (C) 1996-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+   The GNU C 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; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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 the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <pwd.h>
+
+
+#define LOOKUP_TYPE	struct passwd
+#define FUNCTION_NAME	getpwnam
+#define DATABASE_NAME	passwd
+#define ADD_PARAMS	const char *name
+#define ADD_VARIABLES	name
+#define BUFLEN		NSS_BUFLEN_PASSWD
+
+#include "../nss/getXXbyYY.c"
diff --git a/ap/libc/glibc/glibc-2.23/pwd/getpwnam_r.c b/ap/libc/glibc/glibc-2.23/pwd/getpwnam_r.c
new file mode 100644
index 0000000..0816bb5
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/pwd/getpwnam_r.c
@@ -0,0 +1,29 @@
+/* Copyright (C) 1996-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+   The GNU C 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; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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 the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <pwd.h>
+
+
+#define LOOKUP_TYPE	struct passwd
+#define FUNCTION_NAME	getpwnam
+#define DATABASE_NAME	passwd
+#define ADD_PARAMS	const char *name
+#define ADD_VARIABLES	name
+#define BUFLEN		NSS_BUFLEN_PASSWD
+
+#include <nss/getXXbyYY_r.c>
diff --git a/ap/libc/glibc/glibc-2.23/pwd/getpwuid.c b/ap/libc/glibc/glibc-2.23/pwd/getpwuid.c
new file mode 100644
index 0000000..9d3f293
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/pwd/getpwuid.c
@@ -0,0 +1,29 @@
+/* Copyright (C) 1996-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+   The GNU C 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; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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 the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <pwd.h>
+
+
+#define LOOKUP_TYPE	struct passwd
+#define FUNCTION_NAME	getpwuid
+#define DATABASE_NAME	passwd
+#define ADD_PARAMS	uid_t uid
+#define ADD_VARIABLES	uid
+#define BUFLEN		NSS_BUFLEN_PASSWD
+
+#include "../nss/getXXbyYY.c"
diff --git a/ap/libc/glibc/glibc-2.23/pwd/getpwuid_r.c b/ap/libc/glibc/glibc-2.23/pwd/getpwuid_r.c
new file mode 100644
index 0000000..b998e0c
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/pwd/getpwuid_r.c
@@ -0,0 +1,29 @@
+/* Copyright (C) 1996-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+   The GNU C 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; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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 the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <pwd.h>
+
+
+#define LOOKUP_TYPE	struct passwd
+#define FUNCTION_NAME	getpwuid
+#define DATABASE_NAME	passwd
+#define ADD_PARAMS	uid_t uid
+#define ADD_VARIABLES	uid
+#define BUFLEN		NSS_BUFLEN_PASSWD
+
+#include <nss/getXXbyYY_r.c>
diff --git a/ap/libc/glibc/glibc-2.23/pwd/putpwent.c b/ap/libc/glibc/glibc-2.23/pwd/putpwent.c
new file mode 100644
index 0000000..0df60c4
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/pwd/putpwent.c
@@ -0,0 +1,64 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C 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; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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 the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stdio.h>
+#include <pwd.h>
+#include <nss.h>
+
+#define _S(x)	x ?: ""
+
+/* Write an entry to the given stream.  This must know the format of
+   the password file.  If the input contains invalid characters,
+   return EINVAL, or replace them with spaces (if they are contained
+   in the GECOS field).  */
+int
+putpwent (const struct passwd *p, FILE *stream)
+{
+  if (p == NULL || stream == NULL
+      || p->pw_name == NULL || !__nss_valid_field (p->pw_name)
+      || !__nss_valid_field (p->pw_passwd)
+      || !__nss_valid_field (p->pw_dir)
+      || !__nss_valid_field (p->pw_shell))
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  int ret;
+  char *gecos_alloc;
+  const char *gecos = __nss_rewrite_field (p->pw_gecos, &gecos_alloc);
+
+  if (gecos == NULL)
+    return -1;
+
+  if (p->pw_name[0] == '+' || p->pw_name[0] == '-')
+      ret = fprintf (stream, "%s:%s:::%s:%s:%s\n",
+		     p->pw_name, _S (p->pw_passwd),
+		     gecos, _S (p->pw_dir), _S (p->pw_shell));
+  else
+      ret = fprintf (stream, "%s:%s:%lu:%lu:%s:%s:%s\n",
+		     p->pw_name, _S (p->pw_passwd),
+		     (unsigned long int) p->pw_uid,
+		     (unsigned long int) p->pw_gid,
+		     gecos, _S (p->pw_dir), _S (p->pw_shell));
+
+  free (gecos_alloc);
+  if (ret >= 0)
+    ret = 0;
+  return ret;
+}
diff --git a/ap/libc/glibc/glibc-2.23/pwd/pwd.h b/ap/libc/glibc/glibc-2.23/pwd/pwd.h
new file mode 100644
index 0000000..07455e7
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/pwd/pwd.h
@@ -0,0 +1,189 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C 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; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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 the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/*
+ *	POSIX Standard: 9.2.2 User Database Access	<pwd.h>
+ */
+
+#ifndef	_PWD_H
+#define	_PWD_H	1
+
+#include <features.h>
+
+__BEGIN_DECLS
+
+#include <bits/types.h>
+
+#define __need_size_t
+#include <stddef.h>
+
+#if defined __USE_XOPEN || defined __USE_XOPEN2K
+/* The Single Unix specification says that some more types are
+   available here.  */
+# ifndef __gid_t_defined
+typedef __gid_t gid_t;
+#  define __gid_t_defined
+# endif
+
+# ifndef __uid_t_defined
+typedef __uid_t uid_t;
+#  define __uid_t_defined
+# endif
+#endif
+
+/* The passwd structure.  */
+struct passwd
+{
+  char *pw_name;		/* Username.  */
+  char *pw_passwd;		/* Password.  */
+  __uid_t pw_uid;		/* User ID.  */
+  __gid_t pw_gid;		/* Group ID.  */
+  char *pw_gecos;		/* Real name.  */
+  char *pw_dir;			/* Home directory.  */
+  char *pw_shell;		/* Shell program.  */
+};
+
+
+#ifdef __USE_MISC
+# define __need_FILE
+# include <stdio.h>
+#endif
+
+
+#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED
+/* Rewind the password-file stream.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+extern void setpwent (void);
+
+/* Close the password-file stream.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+extern void endpwent (void);
+
+/* Read an entry from the password-file stream, opening it if necessary.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+extern struct passwd *getpwent (void);
+#endif
+
+#ifdef	__USE_MISC
+/* Read an entry from STREAM.
+
+   This function is not part of POSIX and therefore no official
+   cancellation point.  But due to similarity with an POSIX interface
+   or due to the implementation it is a cancellation point and
+   therefore not marked with __THROW.  */
+extern struct passwd *fgetpwent (FILE *__stream) __nonnull ((1));
+
+/* Write the given entry onto the given stream.
+
+   This function is not part of POSIX and therefore no official
+   cancellation point.  But due to similarity with an POSIX interface
+   or due to the implementation it is a cancellation point and
+   therefore not marked with __THROW.  */
+extern int putpwent (const struct passwd *__restrict __p,
+		     FILE *__restrict __f);
+#endif
+
+/* Search for an entry with a matching user ID.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+extern struct passwd *getpwuid (__uid_t __uid);
+
+/* Search for an entry with a matching username.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+extern struct passwd *getpwnam (const char *__name) __nonnull ((1));
+
+#ifdef __USE_POSIX
+
+# ifdef __USE_MISC
+/* Reasonable value for the buffer sized used in the reentrant
+   functions below.  But better use `sysconf'.  */
+#  define NSS_BUFLEN_PASSWD	1024
+# endif
+
+/* Reentrant versions of some of the functions above.
+
+   PLEASE NOTE: the `getpwent_r' function is not (yet) standardized.
+   The interface may change in later versions of this library.  But
+   the interface is designed following the principals used for the
+   other reentrant functions so the chances are good this is what the
+   POSIX people would choose.  */
+
+# ifdef __USE_MISC
+/* This function is not part of POSIX and therefore no official
+   cancellation point.  But due to similarity with an POSIX interface
+   or due to the implementation it is a cancellation point and
+   therefore not marked with __THROW.  */
+extern int getpwent_r (struct passwd *__restrict __resultbuf,
+		       char *__restrict __buffer, size_t __buflen,
+		       struct passwd **__restrict __result)
+		       __nonnull ((1, 2, 4));
+# endif
+
+extern int getpwuid_r (__uid_t __uid,
+		       struct passwd *__restrict __resultbuf,
+		       char *__restrict __buffer, size_t __buflen,
+		       struct passwd **__restrict __result)
+		       __nonnull ((2, 3, 5));
+
+extern int getpwnam_r (const char *__restrict __name,
+		       struct passwd *__restrict __resultbuf,
+		       char *__restrict __buffer, size_t __buflen,
+		       struct passwd **__restrict __result)
+		       __nonnull ((1, 2, 3, 5));
+
+
+# ifdef	__USE_MISC
+/* Read an entry from STREAM.  This function is not standardized and
+   probably never will.
+
+   This function is not part of POSIX and therefore no official
+   cancellation point.  But due to similarity with an POSIX interface
+   or due to the implementation it is a cancellation point and
+   therefore not marked with __THROW.  */
+extern int fgetpwent_r (FILE *__restrict __stream,
+			struct passwd *__restrict __resultbuf,
+			char *__restrict __buffer, size_t __buflen,
+			struct passwd **__restrict __result)
+			__nonnull ((1, 2, 3, 5));
+# endif
+
+#endif	/* POSIX or reentrant */
+
+#ifdef __USE_GNU
+/* Re-construct the password-file line for the given uid
+   in the given buffer.  This knows the format that the caller
+   will expect, but this need not be the format of the password file.
+
+   This function is not part of POSIX and therefore no official
+   cancellation point.  But due to similarity with an POSIX interface
+   or due to the implementation it is a cancellation point and
+   therefore not marked with __THROW.  */
+extern int getpw (__uid_t __uid, char *__buffer);
+#endif
+
+__END_DECLS
+
+#endif /* pwd.h  */
diff --git a/ap/libc/glibc/glibc-2.23/pwd/tst-getpw.c b/ap/libc/glibc/glibc-2.23/pwd/tst-getpw.c
new file mode 100644
index 0000000..069d1d0
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/pwd/tst-getpw.c
@@ -0,0 +1,114 @@
+/* Copyright (C) 1999-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C 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; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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 the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <pwd.h>
+#include <errno.h>
+#include <stdbool.h>
+
+/* We want to test getpw by calling it with a uid that does
+   exist and one that doesn't exist. We track if we've met those
+   conditions and exit. We also track if we've failed due to lack
+   of memory. That constitutes all of the standard failure cases.  */
+bool seen_hit;
+bool seen_miss;
+bool seen_oom;
+
+/* How many errors we've had while running the test.  */
+int errors;
+
+static void
+check (uid_t uid)
+{
+  int ret;
+  char buf[1024];
+
+  ret = getpw (uid, buf);
+
+  /* Successfully read a password line.  */
+  if (ret == 0 && !seen_hit)
+    {
+      printf ("PASS: Read a password line given a uid.\n");
+      seen_hit = true;
+    }
+
+  /* Failed to read a password line. Why?  */
+  if (ret == -1)
+    {
+      /* No entry?  Technically the errno could be any number
+	 of values including ESRCH, EBADP or EPERM depending
+	 on the quality of the nss module that implements the
+	 underlying lookup. It should be 0 for getpw.*/
+      if (errno == 0 && !seen_miss)
+	{
+	  printf ("PASS: Found an invalid uid.\n");
+	  seen_miss = true;
+	  return;
+	}
+
+      /* Out of memory?  */
+      if (errno == ENOMEM && !seen_oom)
+	{
+	  printf ("FAIL: Failed with ENOMEM.\n");
+	  seen_oom = true;
+	  errors++;
+	}
+
+      /* We don't expect any other values for errno.  */
+      if (errno != ENOMEM && errno != 0)
+	errors++;
+    }
+}
+
+static int
+do_test (void)
+{
+  int ret;
+  uid_t uid;
+
+  /* Should return -1 and set errnot to EINVAL.  */
+  ret = getpw (0, NULL);
+  if (ret == -1 && errno == EINVAL)
+    {
+      printf ("PASS: NULL buffer returns -1 and sets errno to EINVAL.\n");
+    }
+  else
+    {
+      printf ("FAIL: NULL buffer did not return -1 or set errno to EINVAL.\n");
+      errors++;
+    }
+
+  /* Look for one matching uid, one non-found uid and then stop.
+     Set an upper limit at the 16-bit UID mark; no need to go farther.  */
+  for (uid = 0; uid < ((uid_t) 65535); ++uid)
+    {
+      check (uid);
+      if (seen_miss && seen_hit)
+	break;
+    }
+
+  if (!seen_hit)
+    printf ("FAIL: Did not read even one password line given a uid.\n");
+
+  if (!seen_miss)
+    printf ("FAIL: Did not find even one invalid uid.\n");
+
+  return errors;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/ap/libc/glibc/glibc-2.23/pwd/tst-putpwent.c b/ap/libc/glibc/glibc-2.23/pwd/tst-putpwent.c
new file mode 100644
index 0000000..0e5547c
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/pwd/tst-putpwent.c
@@ -0,0 +1,168 @@
+/* Test for processing of invalid passwd entries.  [BZ #18724]
+   Copyright (C) 2015-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C 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; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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 the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <pwd.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+static bool errors;
+
+static void
+check (struct passwd p, const char *expected)
+{
+  char *buf;
+  size_t buf_size;
+  FILE *f = open_memstream (&buf, &buf_size);
+
+  if (f == NULL)
+    {
+      printf ("open_memstream: %m\n");
+      errors = true;
+      return;
+    }
+
+  int ret = putpwent (&p, f);
+
+  if (expected == NULL)
+    {
+      if (ret == -1)
+	{
+	  if (errno != EINVAL)
+	    {
+	      printf ("putpwent: unexpected error code: %m\n");
+	      errors = true;
+	    }
+	}
+      else
+	{
+	  printf ("putpwent: unexpected success (\"%s\")\n", p.pw_name);
+	  errors = true;
+	}
+    }
+  else
+    {
+      /* Expect success.  */
+      size_t expected_length = strlen (expected);
+      if (ret == 0)
+	{
+	  long written = ftell (f);
+
+	  if (written <= 0 || fflush (f) < 0)
+	    {
+	      printf ("stream error: %m\n");
+	      errors = true;
+	    }
+	  else if (buf[written - 1] != '\n')
+	    {
+	      printf ("FAILED: \"%s\" without newline\n", expected);
+	      errors = true;
+	    }
+	  else if (strncmp (buf, expected, written - 1) != 0
+		   || written - 1 != expected_length)
+	    {
+	      printf ("FAILED: \"%s\" (%ld), expected \"%s\" (%zu)\n",
+		      buf, written - 1, expected, expected_length);
+	      errors = true;
+	    }
+	}
+      else
+	{
+	  printf ("FAILED: putpwent (expected \"%s\"): %m\n", expected);
+	  errors = true;
+	}
+    }
+
+  fclose (f);
+  free (buf);
+}
+
+static int
+do_test (void)
+{
+  check ((struct passwd) {
+      .pw_name = (char *) "root",
+    },
+    "root::0:0:::");
+  check ((struct passwd) {
+      .pw_name = (char *) "root",
+      .pw_passwd = (char *) "password",
+    },
+    "root:password:0:0:::");
+  check ((struct passwd) {
+      .pw_name = (char *) "root",
+      .pw_passwd = (char *) "password",
+      .pw_uid = 12,
+      .pw_gid = 34,
+      .pw_gecos = (char *) "gecos",
+      .pw_dir = (char *) "home",
+      .pw_shell = (char *) "shell",
+    },
+    "root:password:12:34:gecos:home:shell");
+  check ((struct passwd) {
+      .pw_name = (char *) "root",
+      .pw_passwd = (char *) "password",
+      .pw_uid = 12,
+      .pw_gid = 34,
+      .pw_gecos = (char *) ":ge\n:cos\n",
+      .pw_dir = (char *) "home",
+      .pw_shell = (char *) "shell",
+    },
+    "root:password:12:34: ge  cos :home:shell");
+
+  /* Bad values.  */
+  {
+    static const char *const bad_strings[] = {
+      ":",
+      "\n",
+      ":bad",
+      "\nbad",
+      "b:ad",
+      "b\nad",
+      "bad:",
+      "bad\n",
+      "b:a\nd",
+      NULL
+    };
+    for (const char *const *bad = bad_strings; *bad != NULL; ++bad)
+      {
+	check ((struct passwd) {
+	    .pw_name = (char *) *bad,
+	  }, NULL);
+	check ((struct passwd) {
+	    .pw_name = (char *) "root",
+	    .pw_passwd = (char *) *bad,
+	  }, NULL);
+	check ((struct passwd) {
+	    .pw_name = (char *) "root",
+	    .pw_dir = (char *) *bad,
+	  }, NULL);
+	check ((struct passwd) {
+	    .pw_name = (char *) "root",
+	    .pw_shell = (char *) *bad,
+	  }, NULL);
+      }
+  }
+
+  return errors > 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"