alpha: force old OSF1 syscalls for getegid, geteuid and getppid [BZ #24986]

On alpha, Linux kernel 5.1 added the standard getegid, geteuid and
getppid syscalls (commit ecf7e0a4ad15287). Up to now alpha was using
the corresponding OSF1 syscalls through:
 - sysdeps/unix/alpha/getegid.S
 - sysdeps/unix/alpha/geteuid.S
 - sysdeps/unix/alpha/getppid.S

When building against kernel headers >= 5.1, the glibc now use the new
syscalls through sysdeps/unix/sysv/linux/syscalls.list. When it is then
used with an older kernel, the corresponding 3 functions fail.

A quick fix is to move the OSF1 wrappers under the
sysdeps/unix/sysv/linux/alpha directory so they override the standard
linux ones. A better fix would be to try the new syscalls and fallback
to the old OSF1 in case the new ones fail. This can be implemented in
a later commit.

Changelog:
	[BZ #24986]
        * sysdeps/unix/alpha/getegid.S: Move to ...
	* sysdeps/unix/sysv/linux/alpha/getegid.S: ... here.
        * sysdeps/unix/alpha/geteuid.S: Move to ...
	* sysdeps/unix/sysv/linux/alpha/geteuid.S: ... here.
        * sysdeps/unix/alpha/getppid.S: Move to ...
	* sysdeps/unix/sysv/linux/alpha/getppid.S: ... here
(cherry picked from commit 1a6566094d3097f4a3037ab5555cddc6cb11c3a3)

diff --git a/ChangeLog b/ChangeLog
index 8e29a549b90f864dfa69aee4cc1b90f791c07b78..3ea022b738708dca17d249d69304d888d06dc7c4 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2019-09-14  Aurelien Jarno  <aurelien@aurel32.net>
+
+       [BZ #24986]
+        * sysdeps/unix/alpha/getegid.S: Move to ...
+       * sysdeps/unix/sysv/linux/alpha/getegid.S: ... here.
+        * sysdeps/unix/alpha/geteuid.S: Move to ...
+       * sysdeps/unix/sysv/linux/alpha/geteuid.S: ... here.
+        * sysdeps/unix/alpha/getppid.S: Move to ...
+       * sysdeps/unix/sysv/linux/alpha/getppid.S: ... here
+
 2019-09-08  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
        * sysdeps/hppa/fpu/libm-test-ulps: Update.

diff --git a/NEWS b/NEWS
index 09f2ce97520dff1e5e17510e3941bcf0a422c43d..5f1ade1c4904a78d9122f7722fbff4542360216f 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -12,6 +12,8 @@ The following bugs are resolved with this release:
   [24682] localedata: zh_CN first weekday should be Monday per GB/T
     7408-2005
   [24867] malloc: Remove unwanted leading whitespace in malloc_info
+  [24986] alpha: new getegid, geteuid and getppid syscalls used
+    unconditionally
 
 \f
 Version 2.30

diff --git a/sysdeps/unix/alpha/getegid.S b/sysdeps/unix/sysv/linux/alpha/getegid.S
similarity index 100%
rename from sysdeps/unix/alpha/getegid.S
rename to sysdeps/unix/sysv/linux/alpha/getegid.S

diff --git a/sysdeps/unix/alpha/geteuid.S b/sysdeps/unix/sysv/linux/alpha/geteuid.S
similarity index 100%
rename from sysdeps/unix/alpha/geteuid.S
rename to sysdeps/unix/sysv/linux/alpha/geteuid.S

diff --git a/sysdeps/unix/alpha/getppid.S b/sysdeps/unix/sysv/linux/alpha/getppid.S
similarity index 100%
rename from sysdeps/unix/alpha/getppid.S
rename to sysdeps/unix/sysv/linux/alpha/getppid.S