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-rw-r--r--sysdeps/unix/sysv/linux/Dist1
-rw-r--r--sysdeps/unix/sysv/linux/Makefile2
-rw-r--r--sysdeps/unix/sysv/linux/arm/profil-counter.h51
-rw-r--r--sysdeps/unix/sysv/linux/bits/socket.h7
-rw-r--r--sysdeps/unix/sysv/linux/bits/sockunion.h46
-rw-r--r--sysdeps/unix/sysv/linux/if_index.c44
-rw-r--r--sysdeps/unix/sysv/linux/mips/bits/socket.h2
-rw-r--r--sysdeps/unix/sysv/linux/ptsname.c84
-rw-r--r--sysdeps/unix/sysv/linux/sa_len.c46
9 files changed, 223 insertions, 60 deletions
diff --git a/sysdeps/unix/sysv/linux/Dist b/sysdeps/unix/sysv/linux/Dist
index 181ac53d5e..b938504627 100644
--- a/sysdeps/unix/sysv/linux/Dist
+++ b/sysdeps/unix/sysv/linux/Dist
@@ -46,6 +46,7 @@ rt_sigqueueinfo.c
 rt_sigreturn.c
 rt_sigsuspend.c
 rt_sigtimedwait.c
+sa_len.c
 scsi/sg.h
 scsi/scsi.h
 sys/acct.h
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index 2bc194384a..9abab1e1ce 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -58,7 +58,7 @@ ifeq ($(subdir),socket)
 sysdep_headers += net/if.h net/if_ppp.h net/ppp-comp.h \
 		  net/ppp_defs.h net/if_arp.h net/route.h net/ethernet.h \
 		  net/if_slip.h net/if_packet.h
-sysdep_routines += cmsg_nxthdr
+sysdep_routines += cmsg_nxthdr sa_len
 endif
 
 ifeq ($(subdir),sunrpc)
diff --git a/sysdeps/unix/sysv/linux/arm/profil-counter.h b/sysdeps/unix/sysv/linux/arm/profil-counter.h
index d84e70e7ff..0d5024fa47 100644
--- a/sysdeps/unix/sysv/linux/arm/profil-counter.h
+++ b/sysdeps/unix/sysv/linux/arm/profil-counter.h
@@ -1,5 +1,5 @@
 /* Low-level statistical profiling support function.  Linux/ARM version.
-   Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997, 1998 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
@@ -18,9 +18,54 @@
    Boston, MA 02111-1307, USA.  */
 
 #include <signal.h>
+#include <asm/ptrace.h>
+
+union k_sigcontext
+  {
+    struct
+      {
+	unsigned long int trap_no;
+	unsigned long int error_code;
+	unsigned long int oldmask;
+	unsigned long int arm_r0;
+	unsigned long int arm_r1;
+	unsigned long int arm_r2;
+	unsigned long int arm_r3;
+	unsigned long int arm_r4;
+	unsigned long int arm_r5;
+	unsigned long int arm_r6;
+	unsigned long int arm_r7;
+	unsigned long int arm_r8;
+	unsigned long int arm_r9;
+	unsigned long int arm_r10;
+	unsigned long int arm_fp;
+	unsigned long int arm_ip;
+	unsigned long int arm_sp;
+	unsigned long int arm_lr;
+	unsigned long int arm_pc;
+	unsigned long int arm_cpsr;
+      } v21;
+    struct
+      {
+	unsigned long int magic;
+	struct pt_regs reg;
+	unsigned long int trap_no;
+	unsigned long int error_code;
+	unsigned long int oldmask;
+      } v20;
+};
 
 void
-profil_counter (int signo, struct sigcontext sc)
+profil_counter (int signo, int _a2, int _a3, int _a4, union k_sigcontext sc)
 {
-  profil_count ((void *) sc.reg.ARM_pc);
+  /* The format of struct sigcontext changed between 2.0 and 2.1 kernels.
+     Fortunately 2.0 puts a magic number in the first word and this is not
+     a legal value for `trap_no', so we can tell them apart.  */
+
+  void *pc;
+  if (sc.v20.magic == 0x4B534154)
+    pc = (void *) sc.v20.reg.ARM_pc;
+  else
+    pc = (void *) sc.v21.arm_pc;
+  profil_count (pc);
 }
diff --git a/sysdeps/unix/sysv/linux/bits/socket.h b/sysdeps/unix/sysv/linux/bits/socket.h
index 0938a17a81..e74b011c1d 100644
--- a/sysdeps/unix/sysv/linux/bits/socket.h
+++ b/sysdeps/unix/sysv/linux/bits/socket.h
@@ -17,7 +17,10 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#ifndef _SYS_SOCKET_H
+#ifndef __BITS_SOCKET_H
+#define __BITS_SOCKET_H
+
+#if !defined _SYS_SOCKET_H && !defined _NETINET_IN_H
 # error "Never include <bits/socket.h> directly; use <sys/socket.h> instead."
 #endif
 
@@ -230,3 +233,5 @@ struct linger
     int l_onoff;		/* Nonzero to linger on close.  */
     int l_linger;		/* Time to linger.  */
   };
+
+#endif	/* bits/socket.h */
diff --git a/sysdeps/unix/sysv/linux/bits/sockunion.h b/sysdeps/unix/sysv/linux/bits/sockunion.h
new file mode 100644
index 0000000000..b66ac41f23
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/bits/sockunion.h
@@ -0,0 +1,46 @@
+/* Definition of `sockaddr_union'.  Linux version.
+   Copyright (C) 1998 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _SYS_SOCKET_H
+# error "Never include <bits/socket.h> directly; use <sys/socket.h> instead."
+#endif
+
+#include <netash/ash.h>
+#include <netatalk/at.h>
+#include <netax25/ax25.h>
+#include <netinet/in.h>
+#include <netipx/ipx.h>
+#include <netrose/rose.h>
+#include <sys/un.h>
+
+/* Union of all sockaddr types (required by IPv6 Basic API).  This is
+   somewhat evil.  */
+union sockaddr_union
+  {
+    struct sockaddr sa;
+    struct sockaddr_ash sash;
+    struct sockaddr_at sat;
+    struct sockaddr_ax25 sax25;
+    struct sockaddr_in sin;
+    struct sockaddr_in6 sin6;
+    struct sockaddr_ipx sipx;
+    struct sockaddr_rose rose;
+    struct sockaddr_un sun;
+    char __maxsize[128];
+  };
diff --git a/sysdeps/unix/sysv/linux/if_index.c b/sysdeps/unix/sysv/linux/if_index.c
index 9d9bf0e0b2..de66b5cb21 100644
--- a/sysdeps/unix/sysv/linux/if_index.c
+++ b/sysdeps/unix/sysv/linux/if_index.c
@@ -117,52 +117,46 @@ if_nameindex (void)
 #else
   int fd = opensock ();
   struct ifconf ifc;
-  unsigned int rq_ifs = 4, nifs, i;
+  unsigned int nifs, i;
   int rq_len;
   struct if_nameindex *idx = NULL;
-#ifdef SIOCGIFCOUNT
-  static int siocgifcount_works = 1;
-#endif
+  static int new_siocgifconf = 1;
+#define RQ_IFS	4
 
   if (fd < 0)
     return NULL;
 
-#ifdef SIOCGIFCOUNT
-  /* We may be able to find out how many interfaces really exist, rather
-     than guessing.  This ioctl is not present in kernels before version
-     2.1.50.  */
-  if (siocgifcount_works)
-    {
-      int serrno = errno;
+  ifc.ifc_buf = NULL;
 
-      if (ioctl (fd, SIOCGIFCOUNT, &nifs) < 0)
+  /* We may be able to get the needed buffer size directly, rather than
+     guessing.  */
+  if (new_siocgifconf)
+    {
+      ifc.ifc_buf = NULL;
+      ifc.ifc_len = 0;
+      if (ioctl (fd, SIOCGIFCONF, &ifc) < 0 || ifc.ifc_len == 0)
 	{
-	  if (errno == EINVAL)
-	    {
-	      siocgifcount_works = 0;
-	      __set_errno (serrno);
-	    }
+	  new_siocgifconf = 0;
+	  rq_len = RQ_IFS * sizeof (struct ifreq);
 	}
       else
-	rq_ifs = nifs + 1;
+	rq_len = ifc.ifc_len;
     }
-#endif
-
-  ifc.ifc_buf = NULL;
+  else
+    rq_len = RQ_IFS * sizeof (struct ifreq);
 
   /* Read all the interfaces out of the kernel.  */
   do
     {
-      rq_len = ifc.ifc_len = rq_ifs * sizeof (struct ifreq);
-      ifc.ifc_buf = alloca (ifc.ifc_len);
+      ifc.ifc_buf = alloca (ifc.ifc_len = rq_len);
       if ((ifc.ifc_buf == NULL) || (ioctl (fd, SIOCGIFCONF, &ifc) < 0))
 	{
 	  close (fd);
 	  return NULL;
 	}
-      rq_ifs *= 2;
+      rq_len *= 2;
     }
-  while (ifc.ifc_len == rq_len);
+  while (ifc.ifc_len == rq_len && new_siocgifconf == 0);
 
   nifs = ifc.ifc_len / sizeof (struct ifreq);
 
diff --git a/sysdeps/unix/sysv/linux/mips/bits/socket.h b/sysdeps/unix/sysv/linux/mips/bits/socket.h
index f481a478b2..75ed54fc56 100644
--- a/sysdeps/unix/sysv/linux/mips/bits/socket.h
+++ b/sysdeps/unix/sysv/linux/mips/bits/socket.h
@@ -17,7 +17,7 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-#ifndef _SYS_STAT_H
+#if !defined _SYS_STAT_H && !defined _NETINET_IN_H
 # error "Never include <bits/socket.h> directly; use <sys/socket.h> instead."
 #endif
 
diff --git a/sysdeps/unix/sysv/linux/ptsname.c b/sysdeps/unix/sysv/linux/ptsname.c
index 77b6d80ac8..c81f23504c 100644
--- a/sysdeps/unix/sysv/linux/ptsname.c
+++ b/sysdeps/unix/sysv/linux/ptsname.c
@@ -24,6 +24,7 @@
 #include <string.h>
 #include <errno.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 #include "pty-internal.h"
 
@@ -40,21 +41,38 @@ char *
 ptsname (fd)
      int fd;
 {
-  return __ptsname_r (fd, namebuf, PTYNAMELEN);
+  return __ptsname_r (fd, namebuf, PTYNAMELEN) != 0 ? NULL : namebuf;
 }
 
-char *
-__ptsname_r (fd, buf, len)
+int
+__ptsname_r (fd, buf, buflen)
      int fd;
      char *buf;
-     unsigned int len;
+     size_t buflen;
 {
-  char nbuf[PTYNAMELEN], idbuf[6];
-  int ptyno;
   struct stat st;
+  int save = errno;
+  int ptyno;
+  char nbuf[PTYNAMELEN], idbuf[6];
+  char *cp;
 
 #ifdef TIOCGPTN
   static int tiocgptn_works = 1;
+#endif
+
+  if (!buf)
+    {
+      __set_errno (EINVAL);
+      return EINVAL;
+    }
+
+  if (!__isatty (fd))
+    {
+      __set_errno (ENOTTY);
+      return ENOTTY;
+    }
+
+#ifdef TIOCGPTN
   if (tiocgptn_works)
     {
       if (ioctl (fd, TIOCGPTN, &ptyno) == 0)
@@ -62,23 +80,21 @@ __ptsname_r (fd, buf, len)
       else
 	{
 	  if(errno != EINVAL)
-	    return 0;
+	    return errno;
 	  else
 	    tiocgptn_works = 0;
 	}
     }
 #endif
-  /* /dev/ptmx will make it into the kernel before 32 bit dev_t, so
-     this should be safe.  */
-  if (__fxstat (_STAT_VER, fd, &st))
-    return 0;
+  if (__fxstat (_STAT_VER, fd, &st) < 0)
+    return errno;
 
   ptyno = minor (st.st_rdev);
   if (major (st.st_rdev) == 4)
     ptyno -= 128;
 
 #ifdef TIOCGPTN
-gotit:
+ gotit:
 #endif
   /* Two different possible naming schemes for pty slaves:
      the SVr4 way.  */
@@ -86,22 +102,32 @@ gotit:
   idbuf[5] = '\0';
   __stpcpy (__stpcpy (nbuf, "/dev/pts/"),
 	    _itoa_word (ptyno, &idbuf[4], 10, 0));
-  if (!__xstat (_STAT_VER, nbuf, &st))
-    return strncpy (buf, nbuf, len);
-  else
-    if (errno != ENOENT)
-      return NULL;
-
-  /* ...and the BSD way.  */
-  nbuf[5]  = 't';
-  nbuf[7]  = 'y';
-  nbuf[8]  = __ptyname1[ptyno / 16];
-  nbuf[9]  = __ptyname2[ptyno % 16];
-  nbuf[10] = '\0';
-
-  if (__xstat (_STAT_VER, nbuf, &st))
-    return NULL;
-
-  return strncpy (buf, nbuf, len);
+  if (__xstat (_STAT_VER, nbuf, &st) < 0)
+    {
+      if (errno != ENOENT)
+	return errno;
+
+      /* ...and the BSD way.  */
+      nbuf[5]  = 't';
+      nbuf[7]  = 'y';
+      nbuf[8]  = __ptyname1[ptyno / 16];
+      nbuf[9]  = __ptyname2[ptyno % 16];
+      nbuf[10] = '\0';
+
+      if (__xstat (_STAT_VER, nbuf, &st) < 0)
+	return errno;
+    }
+
+  if (buflen < strlen (nbuf) + 1)
+    {
+      __set_errno (ERANGE);
+      return ERANGE;
+    }
+
+  cp = __stpncpy (buf, nbuf, buflen);
+  cp[0] = '\0';
+
+  __set_errno (save);
+  return 0;
 }
 weak_alias (__ptsname_r, ptsname_r)
diff --git a/sysdeps/unix/sysv/linux/sa_len.c b/sysdeps/unix/sysv/linux/sa_len.c
new file mode 100644
index 0000000000..3c66040238
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sa_len.c
@@ -0,0 +1,46 @@
+/* Copyright (C) 1998 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sys/socket.h>
+
+#include <netatalk/at.h>
+#include <netax25/ax25.h>
+#include <netinet/in.h>
+#include <netipx/ipx.h>
+#include <netrose/rose.h>
+
+int
+__libc_sa_len (sa_family_t af)
+{
+  switch (af)
+    {
+    case AF_APPLETALK:
+      return sizeof (struct sockaddr_at);
+    case AF_AX25:
+      return sizeof (struct sockaddr_ax25);
+    case AF_INET:
+      return sizeof (struct sockaddr_in);
+    case AF_INET6:
+      return sizeof (struct sockaddr_in6);
+    case AF_IPX:
+      return sizeof (struct sockaddr_ipx);
+    case AF_ROSE:
+      return sizeof (struct sockaddr_rose);
+    }
+  return 0;
+}