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

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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
This commit is contained in:
Aurelien Jarno 2019-09-14 18:22:52 +02:00
parent 91372f0001
commit a132a2c305
5 changed files with 12 additions and 0 deletions
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10
ChangeLog
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@ -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
2019-09-13 Wilco Dijkstra <wdijkstr@arm.com>
* string/memmem.c (__memmem): Rewrite to improve performance.

2
NEWS
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@ -33,6 +33,8 @@ The following bugs are resolved with this release:
[24228] old x86 applications that use legacy libio crash on exit
[24476] dlfcn: Guard __dlerror_main_freeres with __libc_once_get (once)
[24744] io: Remove the copy_file_range emulation
[24986] alpha: new getegid, geteuid and getppid syscalls used
unconditionally
Security related changes:

0
sysdeps/unix/alpha/getegid.S → sysdeps/unix/sysv/linux/alpha/getegid.S
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0
sysdeps/unix/alpha/geteuid.S → sysdeps/unix/sysv/linux/alpha/geteuid.S
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0
sysdeps/unix/alpha/getppid.S → sysdeps/unix/sysv/linux/alpha/getppid.S
View File