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bsd-user: Implement shm_open(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: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230925182709.4834-20-kariem.taha2.7@gmail.com>
master
Stacey Son 2023-09-25 21:27:05 +03:00 committed by Warner Losh
parent a99d740347
commit 4f0be683e3
2 changed files with 29 additions and 0 deletions
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25
bsd-user/bsd-mem.h
View File

@ -257,4 +257,29 @@ static inline abi_long do_obreak(abi_ulong brk_val)
return target_brk;
}
/* shm_open(2) */
static inline abi_long do_bsd_shm_open(abi_ulong arg1, abi_long arg2,
abi_long arg3)
{
int ret;
void *p;
if (arg1 == (uintptr_t)SHM_ANON) {
p = SHM_ANON;
} else {
p = lock_user_string(arg1);
if (p == NULL) {
return -TARGET_EFAULT;
}
}
ret = get_errno(shm_open(p, target_to_host_bitmask(arg2, fcntl_flags_tbl),
arg3));
if (p != SHM_ANON) {
unlock_user(p, arg1, 0);
}
return ret;
}
#endif /* BSD_USER_BSD_MEM_H */

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

@ -843,6 +843,10 @@ static abi_long freebsd_syscall(void *cpu_env, int num, abi_long arg1,
ret = do_bsd_mincore(arg1, arg2, arg3);
break;
case TARGET_FREEBSD_NR_freebsd12_shm_open: /* shm_open(2) */
ret = do_bsd_shm_open(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);