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-rw-r--r--ChangeLog26
-rw-r--r--elf/dl-lookup.c1
-rw-r--r--elf/do-lookup.h12
-rw-r--r--math/libm-test.c10
-rw-r--r--stdio-common/vfprintf.c4
-rw-r--r--sysdeps/libm-ieee754/w_j0.c16
-rw-r--r--sysdeps/libm-ieee754/w_j0f.c12
-rw-r--r--sysdeps/libm-ieee754/w_j0l.c10
-rw-r--r--sysdeps/libm-ieee754/w_j1.c16
-rw-r--r--sysdeps/libm-ieee754/w_j1f.c16
-rw-r--r--sysdeps/libm-ieee754/w_j1l.c10
-rw-r--r--sysdeps/libm-ieee754/w_jn.c16
-rw-r--r--sysdeps/libm-ieee754/w_jnf.c12
-rw-r--r--sysdeps/libm-ieee754/w_jnl.c10
-rw-r--r--sysdeps/unix/sysv/linux/i386/sigaction.c2
-rw-r--r--sysdeps/unix/sysv/linux/if_index.c48
-rw-r--r--sysdeps/unix/sysv/linux/kernel-features.h5
17 files changed, 130 insertions, 96 deletions
diff --git a/ChangeLog b/ChangeLog
index 7671f61e47..d7fa0d48a5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,31 @@
 1999-06-06  Ulrich Drepper  <drepper@cygnus.com>
 
+	* sysdeps/unix/sysv/linux/kernel-features.h: Define
+	__ASSUME_SIOCGIFNAME for kernel >= 2.1.50.
+	* sysdeps/unix/sysv/linux/if_index.c: Correct typo (SIOGIFNAME ->
+	SIOCGIFNAME) and use __ASSUME_SIOCGIFNAME.
+
+	* sysdeps/libm-ieee754/w_j0.c: Remove __ from symbol definitions.
+	* sysdeps/libm-ieee754/w_j0f.c: Likewise.
+	* sysdeps/libm-ieee754/w_j0l.c: Likewise.
+	* sysdeps/libm-ieee754/w_j1.c: Likewise.
+	* sysdeps/libm-ieee754/w_j1f.c: Likewise.
+	* sysdeps/libm-ieee754/w_j1l.c: Likewise.
+	* sysdeps/libm-ieee754/w_jn.c: Likewise.
+	* sysdeps/libm-ieee754/w_jnf.c: Likewise.
+	* sysdeps/libm-ieee754/w_jnl.c: Likewise.
+
+	* stdio-common.c: Correct typos.
+
+	* math/libm-test.c (jn_test): Adjust delta.
+	(y1_test): Likewise.
+	(yn_test): Likewise.
+
+	* elf/do-lookup.h: It should never happen that if we expect a versioned
+	symbol from a file the file has no version table.  This should have
+	been checked in dl-version.c.
+	* elf/dl-lookup.c: Include assert.h.
+
 	* sysdeps/unix/sysv/linux/i386/sigaction.c: Correct restorer
 	function handling.
 
diff --git a/elf/dl-lookup.c b/elf/dl-lookup.c
index 16173c9068..7646587833 100644
--- a/elf/dl-lookup.c
+++ b/elf/dl-lookup.c
@@ -18,6 +18,7 @@
    Boston, MA 02111-1307, USA.  */
 
 #include <alloca.h>
+#include <assert.h>
 #include <string.h>
 #include <unistd.h>
 #include <elf/ldsodefs.h>
diff --git a/elf/do-lookup.h b/elf/do-lookup.h
index 01ad29345e..147560bd32 100644
--- a/elf/do-lookup.h
+++ b/elf/do-lookup.h
@@ -99,10 +99,14 @@ FCT (const char *undef_name, unsigned long int hash,
 	      /* We need a versioned symbol but haven't found any.  If
 		 this is the object which is referenced in the verneed
 		 entry it is a bug in the library since a symbol must
-		 not simply disappear.  */
-	      if (version->filename != NULL
-		  && _dl_name_match_p (version->filename, map))
-		return -2;
+		 not simply disappear.
+
+		 It would also be a bug in the object since it means that
+		 the list of required versions is incomplete and so the
+		 tests in dl-version.c haven't found a problem.*/
+	      assert (version->filename == NULL
+		      || ! _dl_name_match_p (version->filename, map));
+
 	      /* Otherwise we accept the symbol.  */
 	    }
 	  else
diff --git a/math/libm-test.c b/math/libm-test.c
index 49cce03d00..3e5033094c 100644
--- a/math/libm-test.c
+++ b/math/libm-test.c
@@ -5618,7 +5618,7 @@ jn_test (void)
 	     CHOOSE(0, 0, 3e-17));
   check ("jn (10, 0) = 0", FUNC(jn) (10, 0.0), 0.0);
   check_eps ("jn (10, 0.1) = 2.6905...*10^-20", FUNC(jn) (10, 0.1), 0.26905328954342155795e-19,
-	     CHOOSE(0, 2e-35, 2e-27));
+	     CHOOSE(0, 2e-35, 4e-27));
   check_eps ("jn (10, 0.7) = 7.517...*10^-12", FUNC(jn) (10, 0.7), 0.75175911502153953928e-11,
 	     CHOOSE(0, 7e-27, 9e-19));
   check_eps ("jn (10, 1.0) = 2.630...*10^-11", FUNC(jn) (10, 1.0), 0.26306151236874532070e-9,
@@ -5682,7 +5682,8 @@ y1_test (void)
 	     CHOOSE(0, 3e-16, 0));
   check_eps ("y1 (1.0) = -0.78121...", FUNC(y1) (1.0), -0.78121282130028871655,
 	     CHOOSE(0, 2e-16, 0));
-  check ("y1 (1.5) = -0.41230...", FUNC(y1) (1.5), -0.41230862697391129595);
+  check_eps ("y1 (1.5) = -0.41230...", FUNC(y1) (1.5), -0.41230862697391129595,
+	     CHOOSE (0, 0, 3e-8));
   check_eps ("y1 (2.0) = -0.10703...", FUNC(y1) (2.0), -0.10703243154093754689,
 	     CHOOSE(0, 2e-17, 1.5e-8));
   check_eps ("y1 (8.0) = -0.15806...", FUNC(y1) (8.0), -0.15806046173124749426,
@@ -5735,7 +5736,8 @@ yn_test (void)
 	     CHOOSE(0, 3e-16, 0));
   check_eps ("yn (1, 1.0) = -0.78121...", FUNC(yn) (1, 1.0), -0.78121282130028871655,
 	     CHOOSE(0, 2e-16, 0));
-  check ("yn (1, 1.5) = -0.41230...", FUNC(yn) (1, 1.5), -0.41230862697391129595);
+  check_eps ("yn (1, 1.5) = -0.41230...", FUNC(yn) (1, 1.5), -0.41230862697391129595,
+	     CHOOSE (0, 0, 3e-8));
   check_eps ("yn (1, 2.0) = -0.10703...", FUNC(yn) (1, 2.0), -0.10703243154093754689,
 	     CHOOSE(0, 2e-17, 2e-8));
   check_eps ("yn (1, 8.0) = -0.15806...", FUNC(yn) (1, 8.0), -0.15806046173124749426,
@@ -5764,7 +5766,7 @@ yn_test (void)
   check_eps ("yn (10, 0.1) = -1.183...*10^18", FUNC(yn) (10, 0.1), -0.11831335132045197885e19,
 	     CHOOSE(0, 6e2, 2e11));
   check_eps ("yn (10, 0.7) = -4.244...*10^9", FUNC(yn) (10, 0.7), -0.42447194260703866924e10,
-	     CHOOSE(0, 3e-6, 6e2));
+	     CHOOSE(0, 3e-6, 8e2));
   check_eps ("yn (10, 1.0) = -1.216...*10^8", FUNC(yn) (10, 1.0), -0.12161801427868918929e9,
 	     CHOOSE(0, 0, 9));
   check_eps ("yn (10, 2.0) = -129184.5...", FUNC(yn) (10, 2.0), -129184.54220803928264,
diff --git a/stdio-common/vfprintf.c b/stdio-common/vfprintf.c
index e544c6518c..390ce91f71 100644
--- a/stdio-common/vfprintf.c
+++ b/stdio-common/vfprintf.c
@@ -1088,8 +1088,8 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
       int showsign = 0;	/* Always begin with plus or minus sign.  */
       int group = 0;	/* Print numbers according grouping rules.  */
       int is_long_double = 0; /* Argument is long double/ long long int.  */
-      int is_short = 0;	/* Argument is long int.  */
-      int is_long = 0;	/* Argument is short int.  */
+      int is_short = 0;	/* Argument is short int.  */
+      int is_long = 0;	/* Argument is long int.  */
       int is_char = 0;	/* Argument is promoted (unsigned) char.  */
       int width = 0;	/* Width of output; 0 means none specified.  */
       int prec = -1;	/* Precision of output; -1 means none specified.  */
diff --git a/sysdeps/libm-ieee754/w_j0.c b/sysdeps/libm-ieee754/w_j0.c
index c327e1c98f..5a018760bb 100644
--- a/sysdeps/libm-ieee754/w_j0.c
+++ b/sysdeps/libm-ieee754/w_j0.c
@@ -22,9 +22,9 @@ static char rcsid[] = "$NetBSD: w_j0.c,v 1.6 1995/05/10 20:49:11 jtc Exp $";
 #include "math_private.h"
 
 #ifdef __STDC__
-	double __j0(double x)		/* wrapper j0 */
+	double j0(double x)		/* wrapper j0 */
 #else
-	double __j0(x)			/* wrapper j0 */
+	double j0(x)			/* wrapper j0 */
 	double x;
 #endif
 {
@@ -39,17 +39,15 @@ static char rcsid[] = "$NetBSD: w_j0.c,v 1.6 1995/05/10 20:49:11 jtc Exp $";
 	    return z;
 #endif
 }
-weak_alias (__j0, j0)
 #ifdef NO_LONG_DOUBLE
-strong_alias (__j0, __j0l)
-weak_alias (__j0, j0l)
+strong_alias (j0, j0l)
 #endif
 
 
 #ifdef __STDC__
-	double __y0(double x)		/* wrapper y0 */
+	double y0(double x)		/* wrapper y0 */
 #else
-	double __y0(x)			/* wrapper y0 */
+	double y0(x)			/* wrapper y0 */
 	double x;
 #endif
 {
@@ -73,8 +71,6 @@ weak_alias (__j0, j0l)
 	    return z;
 #endif
 }
-weak_alias (__y0, y0)
 #ifdef NO_LONG_DOUBLE
-strong_alias (__y0, __y0l)
-weak_alias (__y0, y0l)
+strong_alias (y0, y0l)
 #endif
diff --git a/sysdeps/libm-ieee754/w_j0f.c b/sysdeps/libm-ieee754/w_j0f.c
index cc8ec6f2d9..32e2eebb56 100644
--- a/sysdeps/libm-ieee754/w_j0f.c
+++ b/sysdeps/libm-ieee754/w_j0f.c
@@ -8,7 +8,7 @@
  *
  * Developed at SunPro, a Sun Microsystems, Inc. business.
  * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice 
+ * software is freely granted, provided that this notice
  * is preserved.
  * ====================================================
  */
@@ -25,9 +25,9 @@ static char rcsid[] = "$NetBSD: w_j0f.c,v 1.3 1995/05/10 20:49:13 jtc Exp $";
 #include "math_private.h"
 
 #ifdef __STDC__
-	float __j0f(float x)		/* wrapper j0f */
+	float j0f(float x)		/* wrapper j0f */
 #else
-	float __j0f(x)			/* wrapper j0f */
+	float j0f(x)			/* wrapper j0f */
 	float x;
 #endif
 {
@@ -43,12 +43,11 @@ static char rcsid[] = "$NetBSD: w_j0f.c,v 1.3 1995/05/10 20:49:13 jtc Exp $";
 	    return z;
 #endif
 }
-weak_alias (__j0f, j0f)
 
 #ifdef __STDC__
-	float __y0f(float x)		/* wrapper y0f */
+	float y0f(float x)		/* wrapper y0f */
 #else
-	float __y0f(x)			/* wrapper y0f */
+	float y0f(x)			/* wrapper y0f */
 	float x;
 #endif
 {
@@ -73,4 +72,3 @@ weak_alias (__j0f, j0f)
 	    return z;
 #endif
 }
-weak_alias (__y0f, y0f)
diff --git a/sysdeps/libm-ieee754/w_j0l.c b/sysdeps/libm-ieee754/w_j0l.c
index 7b4144c95e..b74d9ddcff 100644
--- a/sysdeps/libm-ieee754/w_j0l.c
+++ b/sysdeps/libm-ieee754/w_j0l.c
@@ -26,9 +26,9 @@ static char rcsid[] = "$NetBSD: $";
 #include "math_private.h"
 
 #ifdef __STDC__
-	long double __j0l(long double x)		/* wrapper j0l */
+	long double j0l(long double x)		/* wrapper j0l */
 #else
-	long double __j0l(x)				/* wrapper j0 */
+	long double j0l(x)				/* wrapper j0 */
 	long double x;
 #endif
 {
@@ -43,12 +43,11 @@ static char rcsid[] = "$NetBSD: $";
 	    return z;
 #endif
 }
-weak_alias (__j0l, j0l)
 
 #ifdef __STDC__
-	long double __y0l(long double x)		/* wrapper y0l */
+	long double y0l(long double x)		/* wrapper y0l */
 #else
-	long double __y0l(x)				/* wrapper y0 */
+	long double y0l(x)				/* wrapper y0 */
 	long double x;
 #endif
 {
@@ -72,4 +71,3 @@ weak_alias (__j0l, j0l)
 	    return z;
 #endif
 }
-weak_alias (__y0l, y0l)
diff --git a/sysdeps/libm-ieee754/w_j1.c b/sysdeps/libm-ieee754/w_j1.c
index ae6e9b5537..39fe8543b1 100644
--- a/sysdeps/libm-ieee754/w_j1.c
+++ b/sysdeps/libm-ieee754/w_j1.c
@@ -22,9 +22,9 @@ static char rcsid[] = "$NetBSD: w_j1.c,v 1.6 1995/05/10 20:49:15 jtc Exp $";
 #include "math_private.h"
 
 #ifdef __STDC__
-	double __j1(double x)		/* wrapper j1 */
+	double j1(double x)		/* wrapper j1 */
 #else
-	double __j1(x)			/* wrapper j1 */
+	double j1(x)			/* wrapper j1 */
 	double x;
 #endif
 {
@@ -40,17 +40,15 @@ static char rcsid[] = "$NetBSD: w_j1.c,v 1.6 1995/05/10 20:49:15 jtc Exp $";
 	    return z;
 #endif
 }
-weak_alias (__j1, j1)
 #ifdef NO_LONG_DOUBLE
-strong_alias (__j1, __j1l)
-weak_alias (__j1, j1l)
+strong_alias (j1, j1l)
 #endif
 
 
 #ifdef __STDC__
-	double __y1(double x)		/* wrapper y1 */
+	double y1(double x)		/* wrapper y1 */
 #else
-	double __y1(x)			/* wrapper y1 */
+	double y1(x)			/* wrapper y1 */
 	double x;
 #endif
 {
@@ -74,8 +72,6 @@ weak_alias (__j1, j1l)
 	    return z;
 #endif
 }
-weak_alias (__y1, y1)
 #ifdef NO_LONG_DOUBLE
-strong_alias (__y1, __y1l)
-weak_alias (__y1, y1l)
+strong_alias (y1, y1l)
 #endif
diff --git a/sysdeps/libm-ieee754/w_j1f.c b/sysdeps/libm-ieee754/w_j1f.c
index a1419b31b8..2a7c8db819 100644
--- a/sysdeps/libm-ieee754/w_j1f.c
+++ b/sysdeps/libm-ieee754/w_j1f.c
@@ -8,7 +8,7 @@
  *
  * Developed at SunPro, a Sun Microsystems, Inc. business.
  * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice 
+ * software is freely granted, provided that this notice
  * is preserved.
  * ====================================================
  */
@@ -17,17 +17,17 @@
 static char rcsid[] = "$NetBSD: w_j1f.c,v 1.3 1995/05/10 20:49:17 jtc Exp $";
 #endif
 
-/* 
- * wrapper of j1f,y1f 
+/*
+ * wrapper of j1f,y1f
  */
 
 #include "math.h"
 #include "math_private.h"
 
 #ifdef __STDC__
-	float __j1f(float x)		/* wrapper j1f */
+	float j1f(float x)		/* wrapper j1f */
 #else
-	float __j1f(x)			/* wrapper j1f */
+	float j1f(x)			/* wrapper j1f */
 	float x;
 #endif
 {
@@ -44,12 +44,11 @@ static char rcsid[] = "$NetBSD: w_j1f.c,v 1.3 1995/05/10 20:49:17 jtc Exp $";
 	    return z;
 #endif
 }
-weak_alias (__j1f, j1f)
 
 #ifdef __STDC__
-	float __y1f(float x)		/* wrapper y1f */
+	float y1f(float x)		/* wrapper y1f */
 #else
-	float __y1f(x)			/* wrapper y1f */
+	float y1f(x)			/* wrapper y1f */
 	float x;
 #endif
 {
@@ -74,4 +73,3 @@ weak_alias (__j1f, j1f)
 	    return z;
 #endif
 }
-weak_alias (__y1f, y1f)
diff --git a/sysdeps/libm-ieee754/w_j1l.c b/sysdeps/libm-ieee754/w_j1l.c
index 223ab79cde..49a486cf8e 100644
--- a/sysdeps/libm-ieee754/w_j1l.c
+++ b/sysdeps/libm-ieee754/w_j1l.c
@@ -26,9 +26,9 @@ static char rcsid[] = "$NetBSD: $";
 #include "math_private.h"
 
 #ifdef __STDC__
-	long double __j1l(long double x)	/* wrapper j1l */
+	long double j1l(long double x)	/* wrapper j1l */
 #else
-	long double __j1l(x)			/* wrapper j1l */
+	long double j1l(x)			/* wrapper j1l */
 	long double x;
 #endif
 {
@@ -44,12 +44,11 @@ static char rcsid[] = "$NetBSD: $";
 	    return z;
 #endif
 }
-weak_alias (__j1l, j1l)
 
 #ifdef __STDC__
-	long double __y1l(long double x)	/* wrapper y1l */
+	long double y1l(long double x)	/* wrapper y1l */
 #else
-	long double __y1l(x)			/* wrapper y1l */
+	long double y1l(x)			/* wrapper y1l */
 	long double x;
 #endif
 {
@@ -73,4 +72,3 @@ weak_alias (__j1l, j1l)
 	    return z;
 #endif
 }
-weak_alias (__y1l, y1l)
diff --git a/sysdeps/libm-ieee754/w_jn.c b/sysdeps/libm-ieee754/w_jn.c
index ecd86c0d8b..85fc383fb7 100644
--- a/sysdeps/libm-ieee754/w_jn.c
+++ b/sysdeps/libm-ieee754/w_jn.c
@@ -44,9 +44,9 @@ static char rcsid[] = "$NetBSD: w_jn.c,v 1.6 1995/05/10 20:49:19 jtc Exp $";
 #include "math_private.h"
 
 #ifdef __STDC__
-	double __jn(int n, double x)	/* wrapper jn */
+	double jn(int n, double x)	/* wrapper jn */
 #else
-	double __jn(n,x)			/* wrapper jn */
+	double jn(n,x)			/* wrapper jn */
 	double x; int n;
 #endif
 {
@@ -62,17 +62,15 @@ static char rcsid[] = "$NetBSD: w_jn.c,v 1.6 1995/05/10 20:49:19 jtc Exp $";
 	    return z;
 #endif
 }
-weak_alias (__jn, jn)
 #ifdef NO_LONG_DOUBLE
-strong_alias (__jn, __jnl)
-weak_alias (__jn, jnl)
+strong_alias (jn, jnl)
 #endif
 
 
 #ifdef __STDC__
-	double __yn(int n, double x)	/* wrapper yn */
+	double yn(int n, double x)	/* wrapper yn */
 #else
-	double __yn(n,x)			/* wrapper yn */
+	double yn(n,x)			/* wrapper yn */
 	double x; int n;
 #endif
 {
@@ -96,8 +94,6 @@ weak_alias (__jn, jnl)
 	    return z;
 #endif
 }
-weak_alias (__yn, yn)
 #ifdef NO_LONG_DOUBLE
-strong_alias (__yn, __ynl)
-weak_alias (__yn, ynl)
+strong_alias (yn, ynl)
 #endif
diff --git a/sysdeps/libm-ieee754/w_jnf.c b/sysdeps/libm-ieee754/w_jnf.c
index 82cdc9f769..63ad335573 100644
--- a/sysdeps/libm-ieee754/w_jnf.c
+++ b/sysdeps/libm-ieee754/w_jnf.c
@@ -8,7 +8,7 @@
  *
  * Developed at SunPro, a Sun Microsystems, Inc. business.
  * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice 
+ * software is freely granted, provided that this notice
  * is preserved.
  * ====================================================
  */
@@ -21,9 +21,9 @@ static char rcsid[] = "$NetBSD: w_jnf.c,v 1.3 1995/05/10 20:49:21 jtc Exp $";
 #include "math_private.h"
 
 #ifdef __STDC__
-	float __jnf(int n, float x)	/* wrapper jnf */
+	float jnf(int n, float x)	/* wrapper jnf */
 #else
-	float __jnf(n,x)			/* wrapper jnf */
+	float jnf(n,x)			/* wrapper jnf */
 	float x; int n;
 #endif
 {
@@ -40,12 +40,11 @@ static char rcsid[] = "$NetBSD: w_jnf.c,v 1.3 1995/05/10 20:49:21 jtc Exp $";
 	    return z;
 #endif
 }
-weak_alias (__jnf, jnf)
 
 #ifdef __STDC__
-	float __ynf(int n, float x)	/* wrapper ynf */
+	float ynf(int n, float x)	/* wrapper ynf */
 #else
-	float __ynf(n,x)			/* wrapper ynf */
+	float ynf(n,x)			/* wrapper ynf */
 	float x; int n;
 #endif
 {
@@ -70,4 +69,3 @@ weak_alias (__jnf, jnf)
 	    return z;
 #endif
 }
-weak_alias (__ynf, ynf)
diff --git a/sysdeps/libm-ieee754/w_jnl.c b/sysdeps/libm-ieee754/w_jnl.c
index 0a243db30a..866e3cdb00 100644
--- a/sysdeps/libm-ieee754/w_jnl.c
+++ b/sysdeps/libm-ieee754/w_jnl.c
@@ -48,9 +48,9 @@ static char rcsid[] = "$NetBSD: $";
 #include "math_private.h"
 
 #ifdef __STDC__
-	long double __jnl(int n, long double x)	/* wrapper jnl */
+	long double jnl(int n, long double x)	/* wrapper jnl */
 #else
-	long double __jnl(n,x)			/* wrapper jnl */
+	long double jnl(n,x)			/* wrapper jnl */
 	long double x; int n;
 #endif
 {
@@ -66,12 +66,11 @@ static char rcsid[] = "$NetBSD: $";
 	    return z;
 #endif
 }
-weak_alias (__jnl, jnl)
 
 #ifdef __STDC__
-	long double __ynl(int n, long double x)	/* wrapper ynl */
+	long double ynl(int n, long double x)	/* wrapper ynl */
 #else
-	long double __ynl(n,x)			/* wrapper ynl */
+	long double ynl(n,x)			/* wrapper ynl */
 	long double x; int n;
 #endif
 {
@@ -95,4 +94,3 @@ weak_alias (__jnl, jnl)
 	    return z;
 #endif
 }
-weak_alias (__ynl, ynl)
diff --git a/sysdeps/unix/sysv/linux/i386/sigaction.c b/sysdeps/unix/sysv/linux/i386/sigaction.c
index fddb22a4e0..c126cdaee8 100644
--- a/sysdeps/unix/sysv/linux/i386/sigaction.c
+++ b/sysdeps/unix/sysv/linux/i386/sigaction.c
@@ -75,7 +75,7 @@ __sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
 	{
 	  kact.k_sa_handler = act->sa_handler;
 	  memcpy (&kact.sa_mask, &act->sa_mask, sizeof (sigset_t));
-	  kact.sa_flags = act->sa_flags;
+	  kact.sa_flags = act->sa_flags | SA_RESTORER;
 
 	  kact.sa_restorer = ((act->sa_flags & SA_SIGINFO)
 			      ? &restore_rt : &restore);
diff --git a/sysdeps/unix/sysv/linux/if_index.c b/sysdeps/unix/sysv/linux/if_index.c
index 9b3db6abfb..67fba93cd4 100644
--- a/sysdeps/unix/sysv/linux/if_index.c
+++ b/sysdeps/unix/sysv/linux/if_index.c
@@ -26,6 +26,8 @@
 #include <sys/ioctl.h>
 #include <bits/libc-lock.h>
 
+#include "kernel-features.h"
+
 /* Try to get a socket to talk to the kernel.  */
 #if defined SIOGIFINDEX || defined SIOGIFNAME
 static int
@@ -120,8 +122,12 @@ if_nameindex (void)
   unsigned int nifs, i;
   int rq_len;
   struct if_nameindex *idx = NULL;
+# if __ASSUME_SIOCGIFNAME == 0
   static int old_siocgifconf;
-#define RQ_IFS	4
+# else
+#  define old_siocgifconf 0
+# endif
+# define RQ_IFS	4
 
   if (fd < 0)
     return NULL;
@@ -136,7 +142,9 @@ if_nameindex (void)
       ifc.ifc_len = 0;
       if (__ioctl (fd, SIOCGIFCONF, &ifc) < 0 || ifc.ifc_len == 0)
 	{
+# if __ASSUME_SIOCGIFNAME == 0
 	  old_siocgifconf = 1;
+# endif
 	  rq_len = RQ_IFS * sizeof (struct ifreq);
 	}
       else
@@ -199,24 +207,31 @@ if_nameindex (void)
 char *
 if_indextoname (unsigned int ifindex, char *ifname)
 {
-#ifndef SIOGIFINDEX
+#if !defined SIOGIFINDEX && __ASSUME_SIOCGIFNAME == 0
   __set_errno (ENOSYS);
   return NULL;
 #else
+# if __ASSUME_SIOCGIFNAME == 0
   struct if_nameindex *idx;
   struct if_nameindex *p;
   char *result = NULL;
+# endif
 
-#ifdef SIOGIFNAME
+# if defined SIOCGIFNAME || __ASSUME_SIOCGIFNAME > 0
   /* We may be able to do the conversion directly, rather than searching a
      list.  This ioctl is not present in kernels before version 2.1.50.  */
   struct ifreq ifr;
   int fd;
-  static int siogifname_works_not;
+#  if __ASSUME_SIOCGIFNAME == 0
+  static int siocgifname_works_not;
 
-  if (!siogifname_works_not)
+  if (!siocgifname_works_not)
+#  endif
     {
+#  if __ASSUME_SIOCGIFNAME == 0
       int serrno = errno;
+#  endif
+      int status;
 
       fd = opensock ();
 
@@ -224,23 +239,27 @@ if_indextoname (unsigned int ifindex, char *ifname)
 	return NULL;
 
       ifr.ifr_ifindex = ifindex;
-      if (__ioctl (fd, SIOGIFNAME, &ifr) < 0)
+      status = __ioctl (fd, SIOCGIFNAME, &ifr);
+
+      __close (fd);
+
+#  if __ASSUME_SIOCGIFNAME == 0
+      if (status  < 0)
 	{
 	  if (errno == EINVAL)
-	    siogifname_works_not = 1; /* Don't make the same mistake twice. */
+	    siocgifname_works_not = 1; /* Don't make the same mistake twice. */
 	}
       else
-	{
-	  __close (fd);
-	  return strncpy (ifname, ifr.ifr_name, IFNAMSIZ);
-	}
-
-      __close (fd);
+	return strncpy (ifname, ifr.ifr_name, IFNAMSIZ);
 
       __set_errno (serrno);
+#  else
+      return status < 0 ? NULL : strncpy (ifname, ifr.ifr_name, IFNAMSIZ);
+#  endif
     }
-#endif
+# endif
 
+# if __ASSUME_SIOCGIFNAME == 0
   idx = if_nameindex ();
 
   if (idx != NULL)
@@ -255,5 +274,6 @@ if_indextoname (unsigned int ifindex, char *ifname)
       if_freenameindex (idx);
     }
   return result;
+# endif
 #endif
 }
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index 1bd7ba4ba8..db2bfe24d5 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -69,3 +69,8 @@
 #if __LINUX_KERNEL_VERSION >= 131584
 # define __ASSUME_SETRESUID_SYSCALL	1
 #endif
+
+/* The SIOCGIFNAME ioctl is available starting with 2.1.50.  */
+#if __LINUX_KERNEL_VERSION >= 131408
+# define __ASSUME_SIOCGIFNAME		1
+#endif
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-07-02 12:53:02 +0000