[glibc] hurd: Fix ld.so __access override from libc

[glibc] hurd: Fix ld.so __access override from libc

[Samuel Thibault]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=dd67928700bc9b5954c93b29a6e0b0c4b279d454

commit dd67928700bc9b5954c93b29a6e0b0c4b279d454
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Sun Dec 1 20:52:39 2019 +0000

    hurd: Fix ld.so __access override from libc
    
    ld.so symbols to be overriden by libc need to be extern to really get
    overriden. __access happens to have never been exposed, putting it to
    GLIBC_PRIVATE.

Diff:
---
 include/unistd.h                     | 3 ++-
 io/access.c                          | 1 +
 sysdeps/mach/hurd/Versions           | 8 ++++----
 sysdeps/mach/hurd/access.c           | 1 +
 sysdeps/mach/hurd/i386/localplt.data | 2 +-
 sysdeps/unix/sysv/linux/access.c     | 1 +
 6 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/include/unistd.h b/include/unistd.h
index dbfa53d..f48da2c 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -25,7 +25,8 @@ libc_hidden_proto (tcgetpgrp)
 libc_hidden_proto (readlinkat)
 
 /* Now define the internal interfaces.  */
-extern int __access (const char *__name, int __type) attribute_hidden;
+extern int __access (const char *__name, int __type);
+libc_hidden_proto (__access)
 extern int __euidaccess (const char *__name, int __type);
 extern int __faccessat (int __fd, const char *__file, int __type, int __flag);
 extern int __faccessat_noerrno (int __fd, const char *__file, int __type,
diff --git a/io/access.c b/io/access.c
index dc9fb9d..9106a9f 100644
--- a/io/access.c
+++ b/io/access.c
@@ -39,6 +39,7 @@ __access (const char *file, int type)
   __set_errno (ENOSYS);
   return -1;
 }
+libc_hidden_def (__access)
 stub_warning (access)
 
 weak_alias (__access, access)
diff --git a/sysdeps/mach/hurd/Versions b/sysdeps/mach/hurd/Versions
index dc199bf..9dee71e 100644
--- a/sysdeps/mach/hurd/Versions
+++ b/sysdeps/mach/hurd/Versions
@@ -1,7 +1,7 @@
 libc {
   GLIBC_2.0 {
     # functions with a weak definition in the dynamic linker
-    __access; __mmap;
+    __mmap;
   }
   GLIBC_2.2.6 {
     # functions with a weak definition in the dynamic linker
@@ -9,7 +9,7 @@ libc {
   }
   GLIBC_PRIVATE {
     # Functions shared with the dynamic linker
-    __access_noerrno; __libc_read; __libc_write; __libc_lseek64;
+    __access; __access_noerrno; __libc_read; __libc_write; __libc_lseek64;
     __libc_lock_self0; __sigprocmask; __getcwd;
 
     _dl_init_first;
@@ -22,7 +22,7 @@ ld {
     __hurd_threadvar_stack_mask;  __hurd_threadvar_stack_offset;
 
     # functions that must be shared with libc
-    __access; __close; __getpid;
+    __close; __getpid;
     __mmap; __open; __read; __sbrk; __strtoul_internal;
     __write; __writev; __xstat64; __fxstat64;
     _exit; _hurd_intr_rpc_mach_msg;
@@ -40,7 +40,7 @@ ld {
     _dl_init_first;
 
     # functions that must be shared with libc
-    __access_noerrno; __libc_read; __libc_write; __libc_lseek64;
+    __access; __access_noerrno; __libc_read; __libc_write; __libc_lseek64;
     __libc_lock_self0; __sigprocmask; __getcwd;
   }
 }
diff --git a/sysdeps/mach/hurd/access.c b/sysdeps/mach/hurd/access.c
index 2b5de8e..5072742 100644
--- a/sysdeps/mach/hurd/access.c
+++ b/sysdeps/mach/hurd/access.c
@@ -35,4 +35,5 @@ __access (const char *file, int type)
 {
   return __faccessat (AT_FDCWD, file, type, 0);
 }
+libc_hidden_def (__access)
 weak_alias (__access, access)
diff --git a/sysdeps/mach/hurd/i386/localplt.data b/sysdeps/mach/hurd/i386/localplt.data
index 0c1cf0f..b89e04b 100644
--- a/sysdeps/mach/hurd/i386/localplt.data
+++ b/sysdeps/mach/hurd/i386/localplt.data
@@ -32,7 +32,7 @@ ld.so: __libc_lseek64
 ld.so: __mmap
 ld.so: __fxstat64
 ld.so: __xstat64
-#ld.so: __access
+ld.so: __access
 ld.so: __access_noerrno
 ld.so: __getpid
 ld.so: __getcwd
diff --git a/sysdeps/unix/sysv/linux/access.c b/sysdeps/unix/sysv/linux/access.c
index 690c99a..f9fd6e6 100644
--- a/sysdeps/unix/sysv/linux/access.c
+++ b/sysdeps/unix/sysv/linux/access.c
@@ -29,4 +29,5 @@ __access (const char *file, int type)
   return INLINE_SYSCALL_CALL (faccessat, AT_FDCWD, file, type);
 #endif
 }
+libc_hidden_def (__access)
 weak_alias (__access, access)