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bsd-user: Implement stat related syscalls 

Implement the following syscalls:
fcntl(2)

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
This commit is contained in:
Stacey Son 2023-08-13 10:41:42 +02:00 committed by Warner Losh
parent 213444529d
commit c0023204cb
1 changed files with 74 additions and 0 deletions
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74
bsd-user/freebsd/os-stat.h
View File

@ -351,4 +351,78 @@ static inline abi_long do_freebsd_getdirentries(abi_long arg1,
return ret;
}
/* fcntl(2) */
static inline abi_long do_freebsd_fcntl(abi_long arg1, abi_long arg2,
abi_ulong arg3)
{
abi_long ret;
int host_cmd;
struct flock fl;
struct target_freebsd_flock *target_fl;
host_cmd = target_to_host_fcntl_cmd(arg2);
if (host_cmd < 0) {
return host_cmd;
}
switch (arg2) {
case TARGET_F_GETLK:
if (!lock_user_struct(VERIFY_READ, target_fl, arg3, 1)) {
return -TARGET_EFAULT;
}
__get_user(fl.l_type, &target_fl->l_type);
__get_user(fl.l_whence, &target_fl->l_whence);
__get_user(fl.l_start, &target_fl->l_start);
__get_user(fl.l_len, &target_fl->l_len);
__get_user(fl.l_pid, &target_fl->l_pid);
__get_user(fl.l_sysid, &target_fl->l_sysid);
unlock_user_struct(target_fl, arg3, 0);
ret = get_errno(safe_fcntl(arg1, host_cmd, &fl));
if (!is_error(ret)) {
if (!lock_user_struct(VERIFY_WRITE, target_fl, arg3, 0)) {
return -TARGET_EFAULT;
}
__put_user(fl.l_type, &target_fl->l_type);
__put_user(fl.l_whence, &target_fl->l_whence);
__put_user(fl.l_start, &target_fl->l_start);
__put_user(fl.l_len, &target_fl->l_len);
__put_user(fl.l_pid, &target_fl->l_pid);
__put_user(fl.l_sysid, &target_fl->l_sysid);
unlock_user_struct(target_fl, arg3, 1);
}
break;
case TARGET_F_SETLK:
case TARGET_F_SETLKW:
if (!lock_user_struct(VERIFY_READ, target_fl, arg3, 1)) {
return -TARGET_EFAULT;
}
__get_user(fl.l_type, &target_fl->l_type);
__get_user(fl.l_whence, &target_fl->l_whence);
__get_user(fl.l_start, &target_fl->l_start);
__get_user(fl.l_len, &target_fl->l_len);
__get_user(fl.l_pid, &target_fl->l_pid);
__get_user(fl.l_sysid, &target_fl->l_sysid);
unlock_user_struct(target_fl, arg3, 0);
ret = get_errno(safe_fcntl(arg1, host_cmd, &fl));
break;
case TARGET_F_DUPFD:
case TARGET_F_DUP2FD:
case TARGET_F_GETOWN:
case TARGET_F_SETOWN:
case TARGET_F_GETFD:
case TARGET_F_SETFD:
case TARGET_F_GETFL:
case TARGET_F_SETFL:
case TARGET_F_READAHEAD:
case TARGET_F_RDAHEAD:
case TARGET_F_ADD_SEALS:
case TARGET_F_GET_SEALS:
default:
ret = get_errno(safe_fcntl(arg1, host_cmd, arg3));
break;
}
return ret;
}
#endif /* BSD_USER_FREEBSD_OS_STAT_H */