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bsd-user: Implement msync(2) 

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>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230925182709.4834-15-kariem.taha2.7@gmail.com>
master
Stacey Son 2023-09-25 21:27:00 +03:00 committed by Warner Losh
parent ecbe22494d
commit f28a1e4bab
2 changed files with 15 additions and 0 deletions
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11
bsd-user/bsd-mem.h
View File

@ -88,4 +88,15 @@ 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 (!guest_range_valid_untagged(addr, len)) {
/* It seems odd, but POSIX wants this to be ENOMEM */
return -TARGET_ENOMEM;
}
return get_errno(msync(g2h_untagged(addr), len, flags));
}
#endif /* BSD_USER_BSD_MEM_H */

4
bsd-user/freebsd/os-syscall.c
View File

@ -811,6 +811,10 @@ 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);