Initial revision0_9_1

14 files changed, 820 insertions, 0 deletions

diff --git a/libc/pwd_grp/Makefile b/libc/pwd_grp/Makefile
new file mode 100644
index 000000000..ce5064852
--- /dev/null
+++ b/libc/pwd_grp/Makefile
@@ -0,0 +1,33 @@
+# Copyright (C) 1996 Nat Friedman <ndf@aleph1.mit.edu>
+# This file is part of the Linux-8086 C library and is distributed
+# under the GNU Library General Public License.
+
+LIBC=../libc.a
+
+CC=m68k-pic-coff-gcc
+AR=m68k-pic-coff-ar
+RANLIB=m68k-pic-coff-ranlib
+
+CCFLAGS= -O2 -m68000 -msoft-float -I../include
+
+CFLAGS=$(ARCH) -ansi $(CCFLAGS) $(DEFS)
+
+PSRC=__getpwent.c pwent.c getpwnam.c getpwuid.c putpwent.c getpw.c fgetpwent.c
+GSRC=__getgrent.c grent.c getgrnam.c getgrgid.c fgetgrent.c initgroups.c \
+	config-grp.h
+USRC=utent.c
+
+POBJ=__getpwent.o pwent.o getpwnam.o getpwuid.o putpwent.o getpw.o fgetpwent.o
+GOBJ=__getgrent.o grent.o getgrnam.o getgrgid.o fgetgrent.o initgroups.o 
+UOBJ=utent.o
+
+OBJ=$(POBJ) $(GOBJ) $(UOBJ)
+
+all: $(LIBC)($(OBJ))
+	@$(RM) $(OBJ)
+
+$(LIBC)($(GOBJ)): config-grp.h
+
+clean:
+	rm -f *.o libc.a
+
diff --git a/libc/pwd_grp/__getgrent.c b/libc/pwd_grp/__getgrent.c
new file mode 100644
index 000000000..612f1124d
--- /dev/null
+++ b/libc/pwd_grp/__getgrent.c
@@ -0,0 +1,168 @@
+/*
+ * __getgrent.c - This file is part of the libc-8086/grp package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ * 
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  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
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <grp.h>
+#include "config.h"
+
+/*
+ * This is the core group-file read function.  It behaves exactly like
+ * getgrent() except that it is passed a file descriptor.  getgrent()
+ * is just a wrapper for this function.
+ */
+struct group *
+__getgrent(int grp_fd)
+{
+#ifndef GR_SCALE_DYNAMIC  
+  static char line_buff[GR_MAX_LINE_LEN];
+  static char * members[GR_MAX_MEMBERS];
+#else
+  static char * line_buff = NULL;
+  static char ** members = NULL;
+  short line_index;
+  short buff_size;
+#endif
+  static struct group group;
+  register char * ptr;
+  char * field_begin;
+  short member_num;
+  char * endptr;
+  int line_len;
+
+
+  /* We use the restart label to handle malformatted lines */
+restart:
+#ifdef GR_SCALE_DYNAMIC
+  line_index=0;
+  buff_size=256;
+#endif
+
+#ifndef GR_SCALE_DYNAMIC
+  /* Read the line into the static buffer */
+  if ((line_len=read(grp_fd, line_buff, GR_MAX_LINE_LEN))<=0)
+    return NULL;
+  field_begin=strchr(line_buff, '\n');
+  if (field_begin!=NULL)
+    lseek(grp_fd, (long) (1+field_begin-(line_buff+line_len)), SEEK_CUR);
+  else /* The line is too long - skip it :-\ */
+    {
+      do { if ((line_len=read(grp_fd, line_buff, GR_MAX_LINE_LEN))<=0)
+	return NULL;
+      } while (!(field_begin=strchr(line_buff, '\n')));
+      lseek(grp_fd, (long) ((field_begin-line_buff)-line_len+1), SEEK_CUR);
+      goto restart;
+    }
+  if (*line_buff=='#' || *line_buff==' ' || *line_buff=='\n' ||
+      *line_buff=='\t')
+    goto restart;
+  *field_begin='\0';
+
+#else /* !GR_SCALE_DYNAMIC */
+  line_buff=realloc(line_buff, buff_size);
+  while (1)
+    {
+      if ((line_len=read(grp_fd, line_buff+line_index,
+			 buff_size-line_index))<=0)
+	  return NULL;
+      field_begin=strchr(line_buff, '\n');
+      if (field_begin!=NULL)
+	{
+	  lseek(grp_fd, (long) (1+field_begin-(line_len+line_index+line_buff)),
+		SEEK_CUR);
+	  *field_begin='\0';
+	  if (*line_buff=='#' || *line_buff==' ' || *line_buff=='\n' ||
+	      *line_buff=='\t')
+	    goto restart;
+	  break;
+	}
+      else /* Allocate some more space */
+	{
+	  line_index=buff_size;
+	  buff_size+=256;
+	  line_buff=realloc(line_buff, buff_size);
+	}
+    }
+#endif /* GR_SCALE_DYNAMIC */
+
+  /* Now parse the line */
+  group.gr_name=line_buff;
+  ptr=strchr(line_buff, ':');
+  if (ptr==NULL) goto restart;
+  *ptr++='\0';
+
+  group.gr_passwd=ptr;
+  ptr=strchr(ptr, ':');
+  if (ptr==NULL) goto restart;
+  *ptr++='\0';
+
+  field_begin=ptr;
+  ptr=strchr(ptr, ':');
+  if (ptr==NULL) goto restart;
+  *ptr++='\0';
+
+  group.gr_gid=(gid_t) strtoul(field_begin, &endptr, 10);
+  if (*endptr!='\0') goto restart;
+
+  member_num=0;
+  field_begin=ptr;
+
+#ifndef GR_SCALE_DYNAMIC
+  while ((ptr=strchr(ptr, ','))!=NULL)
+    {
+      *ptr='\0';
+      ptr++;
+      members[member_num]=field_begin;
+      field_begin=ptr;
+      member_num++;
+    }
+  if (*field_begin=='\0')
+    members[member_num]=NULL;
+  else
+    {
+      members[member_num]=field_begin;
+      members[member_num+1]=NULL;
+    }
+#else /* !GR_SCALE_DYNAMIC */
+  if (members!=NULL)
+    free (members);
+  members=(char **) malloc(1*sizeof(char *));
+  while ((ptr=strchr(ptr, ','))!=NULL)
+    {
+      *ptr='\0';
+      ptr++;
+      members[member_num]=field_begin;
+      field_begin=ptr;
+      member_num++;
+      members=(char **)realloc((void *)members, (member_num+1)*sizeof(char *));
+    }
+  if (*field_begin=='\0')
+      members[member_num]=NULL;
+  else
+    {
+      members[member_num]=field_begin;
+      members[member_num+1]=NULL;
+    }
+#endif /* GR_SCALE_DYNAMIC */
+
+  group.gr_mem=members;
+  return &group;
+}
diff --git a/libc/pwd_grp/config.h b/libc/pwd_grp/config.h
new file mode 100644
index 000000000..699434b2a
--- /dev/null
+++ b/libc/pwd_grp/config.h
@@ -0,0 +1,65 @@
+/*
+ * config-grp.h - This file is part of the libc-8086/grp package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ * 
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  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
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+
+#ifndef _CONFIG_GRP_H
+#define _CONFIG_GRP_H
+
+/*
+ * Define GR_SCALE_DYNAMIC if you want grp to dynamically scale its read buffer
+ * so that lines of any length can be used.  On very very small systems,
+ * you may want to leave this undefined becasue it will make the grp functions
+ * somewhat larger (because of the inclusion of malloc and the code necessary).
+ * On larger systems, you will want to define this, because grp will _not_
+ * deal with long lines gracefully (they will be skipped).
+ */
+#undef GR_SCALE_DYNAMIC
+
+#ifndef GR_SCALE_DYNAMIC
+/*
+ * If scaling is not dynamic, the buffers will be statically allocated, and
+ * maximums must be chosen.  GR_MAX_LINE_LEN is the maximum number of
+ * characters per line in the group file.  GR_MAX_MEMBERS is the maximum
+ * number of members of any given group.
+ */
+#define GR_MAX_LINE_LEN 128
+/* GR_MAX_MEMBERS = (GR_MAX_LINE_LEN-(24+3+6))/9 */
+#define GR_MAX_MEMBERS 11
+
+#endif /* !GR_SCALE_DYNAMIC */
+
+
+/*
+ * Define GR_DYNAMIC_GROUP_LIST to make initgroups() dynamically allocate
+ * space for it's GID array before calling setgroups().  This is probably
+ * unnecessary scalage, so it's undefined by default.
+ */
+#undef GR_DYNAMIC_GROUP_LIST
+
+#ifndef GR_DYNAMIC_GROUP_LIST
+/*
+ * GR_MAX_GROUPS is the size of the static array initgroups() uses for
+ * its static GID array if GR_DYNAMIC_GROUP_LIST isn't defined.
+ */
+#define GR_MAX_GROUPS 64
+
+#endif /* !GR_DYNAMIC_GROUP_LIST */
+
+#endif /* !_CONFIG_GRP_H */
diff --git a/libc/pwd_grp/fgetgrent.c b/libc/pwd_grp/fgetgrent.c
new file mode 100644
index 000000000..800236fcc
--- /dev/null
+++ b/libc/pwd_grp/fgetgrent.c
@@ -0,0 +1,35 @@
+/*
+ * fgetgrent.c - This file is part of the libc-8086/grp package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ * 
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  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
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <grp.h>
+
+struct group *
+fgetgrent(FILE * file)
+{
+  if (file==NULL)
+    {
+      errno=EINTR;
+      return NULL;
+    }
+  
+  return __getgrent(fileno(file));
+}
diff --git a/libc/pwd_grp/fgetpwent.c b/libc/pwd_grp/fgetpwent.c
new file mode 100644
index 000000000..e12b89051
--- /dev/null
+++ b/libc/pwd_grp/fgetpwent.c
@@ -0,0 +1,35 @@
+/*
+ * fgetpwent.c - This file is part of the libc-8086/pwd package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ * 
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  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
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <pwd.h>
+
+struct passwd *
+fgetpwent(FILE * file)
+{
+  if (file==NULL)
+    {
+      errno=EINTR;
+      return NULL;
+    }
+
+  return __getpwent(fileno(file));
+}
diff --git a/libc/pwd_grp/getgrgid.c b/libc/pwd_grp/getgrgid.c
new file mode 100644
index 000000000..c1dd20e35
--- /dev/null
+++ b/libc/pwd_grp/getgrgid.c
@@ -0,0 +1,48 @@
+/*
+ * getgrgid.c - This file is part of the libc-8086/grp package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ * 
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  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
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <grp.h>
+
+struct group *
+getgrgid(const gid_t gid)
+{
+  struct group * group;
+  int grp_fd;
+
+  if ((grp_fd=open("/etc/group", O_RDONLY))<0)
+    return NULL;
+
+  while ((group=__getgrent(grp_fd))!=NULL)
+    if (group->gr_gid==gid)
+      {
+	close(grp_fd);
+	return group;
+      }
+
+  close(grp_fd);
+  return NULL;
+}
+
+
+
+
diff --git a/libc/pwd_grp/getgrnam.c b/libc/pwd_grp/getgrnam.c
new file mode 100644
index 000000000..e6c27fc57
--- /dev/null
+++ b/libc/pwd_grp/getgrnam.c
@@ -0,0 +1,51 @@
+/*
+ * getgrnam.c - This file is part of the libc-8086/grp package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ * 
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  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
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <grp.h>
+
+struct group *
+getgrnam(const char * name)
+{
+  int grp_fd;
+  struct group * group;
+
+  if (name==NULL)
+    {
+      errno=EINVAL;
+      return NULL;
+    }
+
+  if ((grp_fd=open("/etc/group", O_RDONLY))<0)
+    return NULL;
+
+  while ((group=__getgrent(grp_fd))!=NULL)
+    if (!strcmp(group->gr_name, name))
+      {
+	close(grp_fd);
+	return group;
+      }
+
+  close(grp_fd);
+  return NULL;
+}
diff --git a/libc/pwd_grp/getpw.c b/libc/pwd_grp/getpw.c
new file mode 100644
index 000000000..4f4e39025
--- /dev/null
+++ b/libc/pwd_grp/getpw.c
@@ -0,0 +1,51 @@
+/*
+ * getpw.c - This file is part of the libc-8086/pwd package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ * 
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  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
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <sys/types.h>
+#include <errno.h>
+#include <stdio.h>
+#include <pwd.h>
+
+int
+getpw(uid_t uid, char *buf)
+{
+  struct passwd * passwd;
+
+  if (buf==NULL)
+    {
+      errno=EINVAL;
+      return -1;
+    }
+  if ((passwd=getpwuid(uid))==NULL)
+    return -1;
+
+  if (sprintf(buf, "%s:%s:%u:%u:%s:%s:%s", passwd->pw_name, passwd->pw_passwd,
+	  passwd->pw_gid, passwd->pw_uid, passwd->pw_gecos,
+	  passwd->pw_dir, passwd->pw_shell)<0)
+    {
+      errno=ENOBUFS;
+      return -1;
+    }
+
+  return 0;
+}  
+
+
+
diff --git a/libc/pwd_grp/getpwnam.c b/libc/pwd_grp/getpwnam.c
new file mode 100644
index 000000000..85dbc8ed8
--- /dev/null
+++ b/libc/pwd_grp/getpwnam.c
@@ -0,0 +1,52 @@
+/*
+ * getpwnam.c - This file is part of the libc-8086/pwd package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ * 
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  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
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <pwd.h>
+
+
+struct passwd *
+getpwnam(const char * name)
+{
+  int passwd_fd;
+  struct passwd * passwd;
+
+  if (name==NULL)
+    {
+      errno=EINVAL;
+      return NULL;
+    }
+
+  if ((passwd_fd=open("/etc/passwd", O_RDONLY))<0)
+    return NULL;
+
+  while ((passwd=__getpwent(passwd_fd))!=NULL)
+    if (!strcmp(passwd->pw_name, name))
+      {
+	close(passwd_fd);
+	return passwd;
+      }	  
+
+  close(passwd_fd);
+  return NULL;
+}
diff --git a/libc/pwd_grp/getpwuid.c b/libc/pwd_grp/getpwuid.c
new file mode 100644
index 000000000..ffd58c1f0
--- /dev/null
+++ b/libc/pwd_grp/getpwuid.c
@@ -0,0 +1,44 @@
+/*
+ * getpwuid.c - This file is part of the libc-8086/pwd package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ * 
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  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
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <pwd.h>
+
+struct passwd *
+getpwuid(uid_t uid)
+{
+  int passwd_fd;
+  struct passwd * passwd;
+
+  if ((passwd_fd=open("/etc/passwd", O_RDONLY))<0)
+    return NULL;
+
+  while ((passwd=__getpwent(passwd_fd))!=NULL)
+    if (passwd->pw_uid==uid)
+      {
+	close(passwd_fd);
+	return passwd;
+      }
+
+  close (passwd_fd);
+  return NULL;
+}
diff --git a/libc/pwd_grp/grent.c b/libc/pwd_grp/grent.c
new file mode 100644
index 000000000..19d618b2b
--- /dev/null
+++ b/libc/pwd_grp/grent.c
@@ -0,0 +1,57 @@
+/*
+ * grent.c - This file is part of the libc-8086/grp package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ * 
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  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
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+/*
+ * setgrent(), endgrent(), and getgrent() are mutually-dependent functions,
+ * so they are all included in the same object file, and thus all linked
+ * in together.
+ */
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <grp.h>
+
+static int grp_fd=-1;
+
+void
+setgrent(void)
+{
+  if (grp_fd!=-1)
+    close(grp_fd);
+  grp_fd=open("/etc/group", O_RDONLY);
+}
+
+void
+endgrent(void)
+{
+ if (grp_fd!=-1)
+   close(grp_fd);
+ grp_fd=-1;
+}
+
+struct group *
+getgrent(void)
+{
+  if (grp_fd==-1)
+    return NULL;
+  return __getgrent(grp_fd);
+}
+
+
diff --git a/libc/pwd_grp/initgroups.c b/libc/pwd_grp/initgroups.c
new file mode 100644
index 000000000..35e1d03ec
--- /dev/null
+++ b/libc/pwd_grp/initgroups.c
@@ -0,0 +1,80 @@
+/*
+ * initgroups.c - This file is part of the libc-8086/grp package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ * 
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  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
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <grp.h>
+#include "config.h"
+
+int
+initgroups(__const char * user, gid_t gid)
+{
+  register struct group * group;
+#ifndef GR_DYNAMIC_GROUP_LIST
+  gid_t group_list[GR_MAX_GROUPS];
+#else
+  gid_t * group_list=NULL;
+#endif
+  register char ** tmp_mem;
+  int num_groups;
+  int grp_fd;
+
+
+  if ((grp_fd=open("/etc/group", O_RDONLY))<0)
+    return -1;
+
+  num_groups=0;
+#ifdef GR_DYNAMIC_GROUP_LIST
+  group_list=(gid_t *) realloc(group_list, 1);
+#endif
+  group_list[num_groups]=gid;
+#ifndef GR_DYNAMIC_GROUP_LIST
+  while (num_groups<GR_MAX_GROUPS &&
+	 (group=__getgrent(grp_fd))!=NULL)
+#else
+  while ((group=__getgrent(grp_fd))!=NULL)
+#endif      
+    {
+      if (group->gr_gid!=gid);
+        {
+	  tmp_mem=group->gr_mem;
+	  while(*tmp_mem!=NULL)
+	    {
+	      if (!strcmp(*tmp_mem, user))
+		{
+		  num_groups++;
+#ifdef GR_DYNAMIC_GROUP_LIST  
+		  group_list=(gid_t *)realloc(group_list,
+					      num_groups*sizeof(gid_t *));
+#endif		  
+		  group_list[num_groups]=group->gr_gid;
+		}
+	      tmp_mem++;
+	    }
+	}
+    }
+  close(grp_fd);
+  return setgroups(num_groups, group_list);
+}
+
+
+
+
diff --git a/libc/pwd_grp/putpwent.c b/libc/pwd_grp/putpwent.c
new file mode 100644
index 000000000..a0035ea98
--- /dev/null
+++ b/libc/pwd_grp/putpwent.c
@@ -0,0 +1,39 @@
+/*
+ * putpwent.c - This file is part of the libc-8086/pwd package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ * 
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  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
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <pwd.h>
+
+int
+putpwent(const struct passwd * passwd, FILE * f)
+{
+  if (passwd == NULL || f == NULL)
+    {
+      errno=EINVAL;
+      return -1;
+    }
+  if (fprintf(f, "%s:%s:%u:%u:%s:%s:%s\n", passwd->pw_name, passwd->pw_passwd,
+	  passwd->pw_gid, passwd->pw_uid, passwd->pw_gecos,
+	  passwd->pw_dir, passwd->pw_shell)<0)
+      return -1;
+
+  return 0;
+}
diff --git a/libc/pwd_grp/pwent.c b/libc/pwd_grp/pwent.c
new file mode 100644
index 000000000..fd65db21a
--- /dev/null
+++ b/libc/pwd_grp/pwent.c
@@ -0,0 +1,62 @@
+/*
+ * pwent.c - This file is part of the libc-8086/pwd package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ * 
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  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
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <pwd.h>
+#include <fcntl.h>
+
+/*
+ * setpwent(), endpwent(), and getpwent() are included in the same object
+ * file, since one cannot be used without the other two, so it makes sense to
+ * link them all in together.
+ */
+
+/* file descriptor for the password file currently open */
+static int pw_fd = -1;
+
+void
+setpwent(void)
+{
+  if (pw_fd!=-1)
+    close(pw_fd);
+
+  pw_fd=open("/etc/passwd", O_RDONLY);
+}
+
+void
+endpwent(void)
+{
+  if (pw_fd!=-1)
+    close(pw_fd);
+  pw_fd=-1;
+}
+
+struct passwd *
+getpwent(void)
+{
+  if (pw_fd!=-1)
+    return __getpwent(pw_fd);
+  return NULL;  
+}
+
+
+