[glibc] ntp_xxxtimex: Use __nonnull to avoid null pointer

[glibc] ntp_xxxtimex: Use __nonnull to avoid null pointer

[Siddhesh Poyarekar]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=6a9786b8ecf84a23f9d108a46f58e9fcca70c4a9

commit 6a9786b8ecf84a23f9d108a46f58e9fcca70c4a9
Author: Xiaoming Ni <nixiaoming@huawei.com>
Date:   Thu May 5 11:01:09 2022 +0800

    ntp_xxxtimex: Use __nonnull to avoid null pointer
    
    ntp_gettime()
    ntp_gettime64()
    ntp_gettimex()
    ntp_gettimex64()
    ntp_adjtime()
    Add __nonnull((1)) to avoid null pointer access.
    
    Link: https://sourceware.org/bugzilla/show_bug.cgi?id=27662
    Link: https://sourceware.org/bugzilla/show_bug.cgi?id=29084
    Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com>
    Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>

Diff:
---
 sysdeps/unix/sysv/linux/include/sys/timex.h |  4 ++--
 sysdeps/unix/sysv/linux/sys/timex.h         | 12 ++++++------
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/sysdeps/unix/sysv/linux/include/sys/timex.h b/sysdeps/unix/sysv/linux/include/sys/timex.h
index dd599b1c32..9d0da60640 100644
--- a/sysdeps/unix/sysv/linux/include/sys/timex.h
+++ b/sysdeps/unix/sysv/linux/include/sys/timex.h
@@ -94,9 +94,9 @@ struct __ntptimeval64
   long int __glibc_reserved3;
   long int __glibc_reserved4;
 };
-extern int __ntp_gettime64 (struct __ntptimeval64 *ntv);
+extern int __ntp_gettime64 (struct __ntptimeval64 *ntv) __nonnull ((1));
 libc_hidden_proto (__ntp_gettime64)
-extern int __ntp_gettimex64 (struct __ntptimeval64 *ntv);
+extern int __ntp_gettimex64 (struct __ntptimeval64 *ntv) __nonnull ((1));
 libc_hidden_proto (__ntp_gettimex64)
 
 #  endif
diff --git a/sysdeps/unix/sysv/linux/sys/timex.h b/sysdeps/unix/sysv/linux/sys/timex.h
index 430e47509d..1a3d2fdb8d 100644
--- a/sysdeps/unix/sysv/linux/sys/timex.h
+++ b/sysdeps/unix/sysv/linux/sys/timex.h
@@ -56,25 +56,25 @@ __BEGIN_DECLS
 
 #ifndef __USE_TIME_BITS64
 extern int adjtimex (struct timex *__ntx) __THROW __nonnull ((1));
-extern int ntp_gettimex (struct ntptimeval *__ntv) __THROW;
+extern int ntp_gettimex (struct ntptimeval *__ntv) __THROW __nonnull ((1));
 
 # ifdef __REDIRECT_NTH
 extern int __REDIRECT_NTH (ntp_gettime, (struct ntptimeval *__ntv),
-                           ntp_gettimex);
+                           ntp_gettimex) __nonnull ((1));
 # else
 #  define ntp_gettime ntp_gettimex
 # endif
-extern int ntp_adjtime (struct timex *__tntx) __THROW;
+extern int ntp_adjtime (struct timex *__tntx) __THROW __nonnull ((1));
 #else
 # ifdef __REDIRECT_NTH
 extern int __REDIRECT_NTH (adjtimex, (struct timex *__ntx),
                            ___adjtimex64) __nonnull ((1));
 extern int __REDIRECT_NTH (ntp_gettime, (struct ntptimeval *__ntv),
-                           __ntp_gettime64);
+                           __ntp_gettime64) __nonnull ((1));
 extern int __REDIRECT_NTH (ntp_gettimex, (struct ntptimeval *__ntv),
-                           __ntp_gettimex64);
+                           __ntp_gettimex64) __nonnull ((1));
 extern int __REDIRECT_NTH (ntp_adjtime, (struct timex *__ntx),
-                           ___adjtimex64);
+                           ___adjtimex64) __nonnull ((1));
 # else
 #  define adjtimex ___adjtimex64
 #  define ntp_adjtime ___adjtimex64