From: Paul Floyd <pjfloyd@wanadoo.fr>
Date: Sat, 6 Sep 2025 14:49:10 +0000 (+0200)
Subject: Solaris 11: fix for VG_(lstat)
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=68f06cbe97ba4d36ab94ad5f3a199d91c2298e5c;p=thirdparty%2Fvalgrind.git

Solaris 11: fix for VG_(lstat)

This function was using SYS_lstat. It works OK with illumos
but not Solaris 11+ which has removed that syscall.

Instead do like Linux and FreeBSD, use SYS_fstatat with the flag
for no follow link.
---

diff --git a/coregrind/m_libcfile.c b/coregrind/m_libcfile.c
index 6addb8761..ea8a56b9c 100644
--- a/coregrind/m_libcfile.c
+++ b/coregrind/m_libcfile.c
@@ -700,9 +700,20 @@ struct vki_stat buf;
    res = VG_(do_syscall4)(__NR_fstatat, VKI_AT_FDCWD, (UWord)file_name, (UWord)&buf, VKI_AT_SYMLINK_NOFOLLOW);
 #endif
 
+#elif defined(VGO_solaris)
+
+   struct vki_stat buf;
+#if defined(SOLARIS_OLD_SYSCALLS)
+   // illumos
+   res = VG_(do_syscall2)(__NR_lstat, (UWord)file_name, (UWord)&buf);
+#else
+   // Solaris 11+
+   res = VG_(do_syscall4)(__NR_fstatat, VKI_AT_FDCWD, (UWord)file_name, (UWord)&buf, VKI_AT_SYMLINK_NOFOLLOW);
+#endif
+
 #else
 
-   /* check this on illumos and Darwin */
+   /* check this on Darwin */
    struct vki_stat buf;
    res = VG_(do_syscall2)(__NR_lstat, (UWord)file_name, (UWord)&buf);
 
diff --git a/include/vki/vki-solaris.h b/include/vki/vki-solaris.h
index 9c96ed19e..18d976700 100644
--- a/include/vki/vki-solaris.h
+++ b/include/vki/vki-solaris.h
@@ -100,6 +100,7 @@ typedef uint32_t vki_u32;
 
 #include <fcntl.h>
 #define VKI_SEEK_SET SEEK_SET
+#define VKI_AT_SYMLINK_NOFOLLOW AT_SYMLINK_NOFOLLOW
 
 
 #include <limits.h>