resolv: Move dn_expand to its own file and into libc

And reformat to GNU style.

This switches back to the dn_expand name for the ABI symbol and turns
__dn_expand into a compatibility symbol.  With the improved namespace
management in current glibc, it is no longer necessary to use a
private namespace symbol.  To avoid old code binding to a
GLIBC_PRIVATE symbol by accident, use __libc_dn_expand for the
internal symbol name.

The symbols dn_expand, __dnexpand were moved using
scripts/move-symbol-to-libc.py, followed by an adjustment to make
dn_expand the only GLIBC_2.34 symbol.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>

7 files changed, 10 insertions, 4 deletions

diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
index 01bc4b637b..a2966bf605 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
@@ -410,6 +410,7 @@ GLIBC_2.0 dlclose F
 GLIBC_2.0 dlerror F
 GLIBC_2.0 dlopen F
 GLIBC_2.0 dlsym F
+GLIBC_2.0 dn_expand F
 GLIBC_2.0 dprintf F
 GLIBC_2.0 drand48 F
 GLIBC_2.0 drand48_r F
@@ -1909,6 +1910,7 @@ GLIBC_2.2 __ctype32_tolower D 0x4
 GLIBC_2.2 __ctype32_toupper D 0x4
 GLIBC_2.2 __cyg_profile_func_enter F
 GLIBC_2.2 __cyg_profile_func_exit F
+GLIBC_2.2 __dn_expand F
 GLIBC_2.2 __endmntent F
 GLIBC_2.2 __fbufsize F
 GLIBC_2.2 __flbf F
@@ -2556,6 +2558,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
 GLIBC_2.34 gai_cancel F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/libresolv.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/libresolv.abilist
index 04952c33e8..1bcda7408c 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/libresolv.abilist
@@ -43,7 +43,6 @@ GLIBC_2.0 _getlong F
 GLIBC_2.0 _getshort F
 GLIBC_2.0 _res_opcodes D 0x40
 GLIBC_2.0 _sethtent F
-GLIBC_2.0 dn_expand F
 GLIBC_2.0 inet_net_ntop F
 GLIBC_2.0 inet_net_pton F
 GLIBC_2.0 inet_neta F
@@ -56,7 +55,6 @@ GLIBC_2.0 res_querydomain F
 GLIBC_2.0 res_search F
 GLIBC_2.0 res_send_setqhook F
 GLIBC_2.0 res_send_setrhook F
-GLIBC_2.2 __dn_expand F
 GLIBC_2.2 __res_hostalias F
 GLIBC_2.2 __res_mkquery F
 GLIBC_2.2 __res_nmkquery F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
index 6a217f5f1d..26408a32b4 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
@@ -410,6 +410,7 @@ GLIBC_2.0 dlclose F
 GLIBC_2.0 dlerror F
 GLIBC_2.0 dlopen F
 GLIBC_2.0 dlsym F
+GLIBC_2.0 dn_expand F
 GLIBC_2.0 dprintf F
 GLIBC_2.0 drand48 F
 GLIBC_2.0 drand48_r F
@@ -1913,6 +1914,7 @@ GLIBC_2.2 __ctype32_tolower D 0x4
 GLIBC_2.2 __ctype32_toupper D 0x4
 GLIBC_2.2 __cyg_profile_func_enter F
 GLIBC_2.2 __cyg_profile_func_exit F
+GLIBC_2.2 __dn_expand F
 GLIBC_2.2 __endmntent F
 GLIBC_2.2 __fbufsize F
 GLIBC_2.2 __flbf F
@@ -2589,6 +2591,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
 GLIBC_2.34 gai_cancel F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
index 615970660b..7e8d35172f 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
@@ -318,6 +318,7 @@ GLIBC_2.3 __daylight D 0x4
 GLIBC_2.3 __dcgettext F
 GLIBC_2.3 __default_morecore F
 GLIBC_2.3 __dgettext F
+GLIBC_2.3 __dn_expand F
 GLIBC_2.3 __dup2 F
 GLIBC_2.3 __duplocale F
 GLIBC_2.3 __endmntent F
@@ -2325,6 +2326,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
 GLIBC_2.34 gai_cancel F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libresolv.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libresolv.abilist
index b6e579f3c0..213741bba9 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libresolv.abilist
@@ -2,7 +2,6 @@ GLIBC_2.3 __b64_ntop F
 GLIBC_2.3 __b64_pton F
 GLIBC_2.3 __dn_comp F
 GLIBC_2.3 __dn_count_labels F
-GLIBC_2.3 __dn_expand F
 GLIBC_2.3 __dn_skipname F
 GLIBC_2.3 __fp_nquery F
 GLIBC_2.3 __fp_query F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
index 7b72a039af..a7db5a8081 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
@@ -165,6 +165,7 @@ GLIBC_2.17 __daylight D 0x4
 GLIBC_2.17 __dcgettext F
 GLIBC_2.17 __default_morecore F
 GLIBC_2.17 __dgettext F
+GLIBC_2.17 __dn_expand F
 GLIBC_2.17 __dprintf_chk F
 GLIBC_2.17 __dup2 F
 GLIBC_2.17 __duplocale F
@@ -2627,6 +2628,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
 GLIBC_2.34 gai_cancel F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libresolv.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libresolv.abilist
index 6e740fad8f..4edce71c8e 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libresolv.abilist
@@ -2,7 +2,6 @@ GLIBC_2.17 __b64_ntop F
 GLIBC_2.17 __b64_pton F
 GLIBC_2.17 __dn_comp F
 GLIBC_2.17 __dn_count_labels F
-GLIBC_2.17 __dn_expand F
 GLIBC_2.17 __dn_skipname F
 GLIBC_2.17 __fp_nquery F
 GLIBC_2.17 __fp_query F