commit 1acae9f22380a03b468a29a3cc035b280610b5e4
author Peter Maydell <peter.maydell@linaro.org> Tue Jul 02 14:04:12 2013 +0100
committer Riku Voipio <riku.voipio@linaro.org> Fri Jul 05 15:45:40 2013 +0300
tree e7fb48e1fdf341ac398b6d73c3806095a232ea0f
parent 167c50d8f94e0ffb880aa5cd2a232a3f32f0df1d

linux-user: Fix sys_utimensat (would not compile on old glibc)

Commit c0d472b12e accidentally dropped the definition of
__NR_SYS_utimensat even though its use is guarded by
CONFIG_UTIMENSAT, not CONFIG_ATFILE. Some older glibc don't
have utimensat() (even if they have the other *at() functions).
Fix this by correctly cleaning up the sys_utimensat()
implementation and #defines, so that we always provide the
syscall if needed whether we're doing it via glibc or not.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Message-id: 1371743841-26110-1-git-send-email-peter.maydell@linaro.org

linux-user/syscall.c

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 4b134dd..d74836a 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -339,6 +339,7 @@
 }
 #endif
 
+#ifdef TARGET_NR_utimensat
 #ifdef CONFIG_UTIMENSAT
 static int sys_utimensat(int dirfd, const char *pathname,
     const struct timespec times[2], int flags)
@@ -348,12 +349,19 @@
     else
         return utimensat(dirfd, pathname, times, flags);
 }
-#else
-#if defined(TARGET_NR_utimensat) && defined(__NR_utimensat)
+#elif defined(__NR_utimensat)
+#define __NR_sys_utimensat __NR_utimensat
 _syscall4(int,sys_utimensat,int,dirfd,const char *,pathname,
           const struct timespec *,tsp,int,flags)
+#else
+static int sys_utimensat(int dirfd, const char *pathname,
+                         const struct timespec times[2], int flags)
+{
+    errno = ENOSYS;
+    return -1;
+}
 #endif
-#endif /* CONFIG_UTIMENSAT  */
+#endif /* TARGET_NR_utimensat */
 
 #ifdef CONFIG_INOTIFY
 #include <sys/inotify.h>
@@ -8627,7 +8635,7 @@
         goto unimplemented_nowarn;
 #endif
 
-#if defined(TARGET_NR_utimensat) && defined(__NR_utimensat)
+#if defined(TARGET_NR_utimensat)
     case TARGET_NR_utimensat:
         {
             struct timespec *tsp, ts[2];