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Message-ID: <20201227184032.22413-3-alobakin@pm.me>
Date: Sun, 27 Dec 2020 18:41:02 +0000
From: Alexander Lobakin <alobakin@...me>
To: Rich Felker <dalias@...ifal.cx>, musl@...ts.openwall.com
Cc: Alexander Lobakin <alobakin@...me>
Subject: [PATCH 03/18] clock_adjtime: try adjtimex at last

Try to use deprecated adjtimex only after clock_adjtime_time64 or
clock_adjtime fail with -ENOSYS.

Signed-off-by: Alexander Lobakin <alobakin@...me>
---
 src/linux/clock_adjtime.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/linux/clock_adjtime.c b/src/linux/clock_adjtime.c
index d4d03d24df40..5a21d5625e59 100644
--- a/src/linux/clock_adjtime.c
+++ b/src/linux/clock_adjtime.c
@@ -114,11 +114,11 @@ int clock_adjtime (clockid_t clock_id, struct timex *utx)
 			.stbcnt = utx->stbcnt,
 			.tai = utx->tai,
 		};
+		r = __syscall(SYS_clock_adjtime, clock_id, &ktx);
 #ifdef SYS_adjtimex
-		if (clock_id==CLOCK_REALTIME) r = __syscall(SYS_adjtimex, &ktx);
-		else
+		if (r == -ENOSYS && clock_id == CLOCK_REALTIME)
+			r = __syscall(SYS_adjtimex, &ktx);
 #endif
-		r = __syscall(SYS_clock_adjtime, clock_id, &ktx);
 		if (r>=0) {
 			utx->modes = ktx.modes;
 			utx->offset = ktx.offset;
@@ -144,8 +144,10 @@ int clock_adjtime (clockid_t clock_id, struct timex *utx)
 		}
 		return __syscall_ret(r);
 	}
+	r = __syscall(SYS_clock_adjtime, clock_id, utx);
 #ifdef SYS_adjtimex
-	if (clock_id==CLOCK_REALTIME) return syscall(SYS_adjtimex, utx);
+	if (r == -ENOSYS && clock_id == CLOCK_REALTIME)
+		r = __syscall(SYS_adjtimex, utx);
 #endif
-	return syscall(SYS_clock_adjtime, clock_id, utx);
+	return __syscall_ret(r);
 }
-- 
2.29.2


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