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[PATCH 14/22] Implement msync(2)
From: |
Karim Taha |
Subject: |
[PATCH 14/22] Implement msync(2) |
Date: |
Sat, 19 Aug 2023 11:47:58 +0200 |
From: Stacey Son <sson@FreeBSD.org>
Co-authored-by: Kyle Evans <kevans@FreeBSD.org>
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Kyle Evans <kevans@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
---
bsd-user/bsd-mem.h | 11 +++++++++++
bsd-user/freebsd/os-syscall.c | 4 ++++
2 files changed, 15 insertions(+)
diff --git a/bsd-user/bsd-mem.h b/bsd-user/bsd-mem.h
index a6446a454c..68d79ac080 100644
--- a/bsd-user/bsd-mem.h
+++ b/bsd-user/bsd-mem.h
@@ -89,4 +89,15 @@ static inline abi_long do_bsd_mprotect(abi_long arg1,
abi_long arg2,
return get_errno(target_mprotect(arg1, arg2, arg3));
}
+/* msync(2) */
+static inline abi_long do_bsd_msync(abi_long addr, abi_long len, abi_long
flags)
+{
+ if (!access_ok(VERIFY_WRITE, addr, len)) {
+ /* XXX Should be EFAULT, but FreeBSD seems to get this wrong. */
+ return -TARGET_ENOMEM;
+ }
+
+ return get_errno(msync(g2h_untagged(addr), len, flags));
+}
+
#endif /* BSD_USER_BSD_MEM_H */
diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c
index aea4e337ff..3871b15309 100644
--- a/bsd-user/freebsd/os-syscall.c
+++ b/bsd-user/freebsd/os-syscall.c
@@ -499,6 +499,10 @@ static abi_long freebsd_syscall(void *cpu_env, int num,
abi_long arg1,
ret = do_bsd_mprotect(arg1, arg2, arg3);
break;
+ case TARGET_FREEBSD_NR_msync: /* msync(2) */
+ ret = do_bsd_msync(arg1, arg2, arg3);
+ break;
+
#if defined(__FreeBSD_version) && __FreeBSD_version >= 1300048
case TARGET_FREEBSD_NR_shm_open2: /* shm_open2(2) */
ret = do_freebsd_shm_open2(arg1, arg2, arg3, arg4, arg5);
--
2.40.0
- Re: [PATCH 09/22] Implement ipc_perm conversion between host and target., (continued)
- [PATCH 11/22] Introduce bsd-mem.h to the source tree, Karim Taha, 2023/08/19
- [PATCH 12/22] Implement mmap(2) and munmap(2), Karim Taha, 2023/08/19
- [PATCH 13/22] Implement mprotect(2), Karim Taha, 2023/08/19
- [PATCH 14/22] Implement msync(2),
Karim Taha <=
- [PATCH 15/22] Implement mlock(2), munlock(2), mlockall(2), munlockall(2), madvise(2), minherit(2), Karim Taha, 2023/08/19
- Re: [PATCH 15/22] Implement mlock(2), munlock(2), mlockall(2), munlockall(2), madvise(2), minherit(2), Warner Losh, 2023/08/20
- Re: [PATCH 15/22] Implement mlock(2), munlock(2), mlockall(2), munlockall(2), madvise(2), minherit(2), Richard Henderson, 2023/08/20
- [PATCH 16/22] Implement mincore(2), Karim Taha, 2023/08/19
- [PATCH 17/22] Implement do_obreak function, Karim Taha, 2023/08/19