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[PULL 05/38] linux-user: Flush out implementation of gettimeofday
From: |
Laurent Vivier |
Subject: |
[PULL 05/38] linux-user: Flush out implementation of gettimeofday |
Date: |
Mon, 16 Mar 2020 17:15:17 +0100 |
From: Richard Henderson <address@hidden>
The first argument, timeval, is allowed to be NULL.
The second argument, timezone, was missing. While its use is
deprecated, it is still present in the syscall.
Reviewed-by: Alex Bennée <address@hidden>
Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Laurent Vivier <address@hidden>
---
linux-user/syscall.c | 27 +++++++++++++++++++++++++--
1 file changed, 25 insertions(+), 2 deletions(-)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 5479d67a10be..811495c3a0bc 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -1228,6 +1228,23 @@ static inline abi_long
host_to_target_timespec64(abi_ulong target_addr,
return 0;
}
+static inline abi_long copy_to_user_timezone(abi_ulong target_tz_addr,
+ struct timezone *tz)
+{
+ struct target_timezone *target_tz;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_tz, target_tz_addr, 1)) {
+ return -TARGET_EFAULT;
+ }
+
+ __put_user(tz->tz_minuteswest, &target_tz->tz_minuteswest);
+ __put_user(tz->tz_dsttime, &target_tz->tz_dsttime);
+
+ unlock_user_struct(target_tz, target_tz_addr, 1);
+
+ return 0;
+}
+
static inline abi_long copy_from_user_timezone(struct timezone *tz,
abi_ulong target_tz_addr)
{
@@ -8642,10 +8659,16 @@ static abi_long do_syscall1(void *cpu_env, int num,
abi_long arg1,
case TARGET_NR_gettimeofday:
{
struct timeval tv;
- ret = get_errno(gettimeofday(&tv, NULL));
+ struct timezone tz;
+
+ ret = get_errno(gettimeofday(&tv, &tz));
if (!is_error(ret)) {
- if (copy_to_user_timeval(arg1, &tv))
+ if (arg1 && copy_to_user_timeval(arg1, &tv)) {
return -TARGET_EFAULT;
+ }
+ if (arg2 && copy_to_user_timezone(arg2, &tz)) {
+ return -TARGET_EFAULT;
+ }
}
}
return ret;
--
2.24.1
- [PULL 00/38] Linux user for 5.0 patches, Laurent Vivier, 2020/03/16
- [PULL 02/38] linux-user/i386: Split out gen_signal, Laurent Vivier, 2020/03/16
- [PULL 07/38] linux-user: do prlimit selectively, Laurent Vivier, 2020/03/16
- [PULL 10/38] linux-user: Protect more syscalls, Laurent Vivier, 2020/03/16
- [PULL 35/38] scripts: add a script to generate syscall_nr.h, Laurent Vivier, 2020/03/16
- [PULL 23/38] linux-user, s390x: remove syscall definitions for !TARGET_S390X, Laurent Vivier, 2020/03/16
- [PULL 25/38] linux-user, sparc, sparc64: add syscall table generation support, Laurent Vivier, 2020/03/16
- [PULL 19/38] linux-user, sh4: add syscall table generation support, Laurent Vivier, 2020/03/16
- [PULL 09/38] linux-user: Update TASK_UNMAPPED_BASE for aarch64, Laurent Vivier, 2020/03/16
- [PULL 05/38] linux-user: Flush out implementation of gettimeofday,
Laurent Vivier <=
- [PULL 16/38] linux-user, hppa: add syscall table generation support, Laurent Vivier, 2020/03/16
- [PULL 03/38] linux-user/i386: Emulate x86_64 vsyscalls, Laurent Vivier, 2020/03/16
- [PULL 22/38] linux-user, ppc: add syscall table generation support, Laurent Vivier, 2020/03/16
- [PULL 29/38] linux-user, mips: add syscall table generation support, Laurent Vivier, 2020/03/16
- [PULL 21/38] linux-user, arm: add syscall table generation support, Laurent Vivier, 2020/03/16
- [PULL 36/38] linux-user, aarch64: sync syscall numbers with kernel v5.5, Laurent Vivier, 2020/03/16
- [PULL 15/38] linux-user, alpha: add syscall table generation support, Laurent Vivier, 2020/03/16
- [PULL 32/38] linux-user: update syscall.tbl from linux 0bf999f9c5e7, Laurent Vivier, 2020/03/16
- [PULL 31/38] linux-user, scripts: add a script to update syscall.tbl, Laurent Vivier, 2020/03/16
- [PULL 27/38] linux-user, i386: add syscall table generation support, Laurent Vivier, 2020/03/16