[glibc] hurd: Add __fstatat64 to dl-sysdep.c

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0d61a8161235e84c240d0f80c3039557f82cc96d

commit 0d61a8161235e84c240d0f80c3039557f82cc96d
Author: Samuel Thibault <[email protected]>
Date:   Mon Jul 20 11:15:46 2026 +0200

    hurd: Add __fstatat64 to dl-sysdep.c
    
    Fixes b9957a70b82203d91b0659b93cfe8632f954aba3
    ("Add system-wide tunables: cache ld.so.cache")
    which adds calling it from rtld.

Diff:
---
 sysdeps/mach/hurd/Versions             |  2 +-
 sysdeps/mach/hurd/dl-sysdep.c          | 11 +++++++++++
 sysdeps/mach/hurd/i386/localplt.data   |  1 +
 sysdeps/mach/hurd/x86_64/localplt.data |  1 +
 4 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/sysdeps/mach/hurd/Versions b/sysdeps/mach/hurd/Versions
index 17592d3569..ce8694fc88 100644
--- a/sysdeps/mach/hurd/Versions
+++ b/sysdeps/mach/hurd/Versions
@@ -62,6 +62,6 @@ ld {
     __read_nocancel; __pread64_nocancel;
     __write_nocancel;
     __getcwd;
-    __stat64; __fstat64;
+    __stat64; __fstat64; __fstatat64;
   }
 }
diff --git a/sysdeps/mach/hurd/dl-sysdep.c b/sysdeps/mach/hurd/dl-sysdep.c
index fe6d453756..4d32c04069 100644
--- a/sysdeps/mach/hurd/dl-sysdep.c
+++ b/sysdeps/mach/hurd/dl-sysdep.c
@@ -542,6 +542,17 @@ __stat64 (const char *file, struct stat64 *buf)
 }
 libc_hidden_def (__stat64)
 
+check_no_hidden(__fstatat64);
+int weak_function
+__fstatat64 (int dirfd, const char *pathname, struct stat64 *buf, int flags)
+{
+  assert (dirfd == AT_FDCWD);
+  assert (flags == 0);
+
+  return __stat64 (pathname, buf);
+}
+libc_hidden_def (__fstatat64)
+
 /* This function is called by the dynamic linker (rtld.c) to check for
    existence of /etc/ld.so.preload.  This stub will always fail, which
    means that /etc/ld.so.preload is unsupported.  */
diff --git a/sysdeps/mach/hurd/i386/localplt.data b/sysdeps/mach/hurd/i386/localplt.data
index b7882d0fbd..f0bddf933f 100644
--- a/sysdeps/mach/hurd/i386/localplt.data
+++ b/sysdeps/mach/hurd/i386/localplt.data
@@ -25,6 +25,7 @@ ld.so: __writev
 ld.so: __libc_lseek64
 ld.so: __mmap
 ld.so: __fstat64
+ld.so: __fstatat64
 ld.so: __stat64
 ld.so: __access
 ld.so: __getpid
diff --git a/sysdeps/mach/hurd/x86_64/localplt.data b/sysdeps/mach/hurd/x86_64/localplt.data
index b7689b5cb0..710abff73e 100644
--- a/sysdeps/mach/hurd/x86_64/localplt.data
+++ b/sysdeps/mach/hurd/x86_64/localplt.data
@@ -24,6 +24,7 @@ ld.so: __writev
 ld.so: __libc_lseek64
 ld.so: __mmap
 ld.so: __fstat64
+ld.so: __fstatat64
 ld.so: __stat64
 ld.so: __access
 ld.so: __getpid