linux-user: fix and cleanup IPCOP_msg* ipc calls handling

Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5483 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-10-13 21:08:44 +00:00
parent a0a83536e0
commit 1c54ff97bb

View File

@ -1611,7 +1611,6 @@ static abi_long do_socketcall(int num, abi_ulong vptr)
}
#endif
#ifdef TARGET_NR_ipc
#define N_SHM_REGIONS 32
static struct shm_region {
@ -1845,20 +1844,26 @@ static inline abi_long do_semctl(int first, int second, int third,
struct target_msqid_ds
{
struct target_ipc_perm msg_perm;
abi_ulong msg_stime;
abi_ulong __unused1;
abi_ulong msg_rtime;
abi_ulong __unused2;
abi_ulong msg_ctime;
abi_ulong __unused3;
abi_ulong __msg_cbytes;
abi_ulong msg_qnum;
abi_ulong msg_qbytes;
abi_ulong msg_lspid;
abi_ulong msg_lrpid;
abi_ulong __unused4;
abi_ulong __unused5;
struct target_ipc_perm msg_perm;
abi_ulong msg_stime;
#if TARGET_ABI_BITS == 32
abi_ulong __unused1;
#endif
abi_ulong msg_rtime;
#if TARGET_ABI_BITS == 32
abi_ulong __unused2;
#endif
abi_ulong msg_ctime;
#if TARGET_ABI_BITS == 32
abi_ulong __unused3;
#endif
abi_ulong __msg_cbytes;
abi_ulong msg_qnum;
abi_ulong msg_qbytes;
abi_ulong msg_lspid;
abi_ulong msg_lrpid;
abi_ulong __unused4;
abi_ulong __unused5;
};
static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md,
@ -1868,7 +1873,8 @@ static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md,
if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1))
return -TARGET_EFAULT;
target_to_host_ipc_perm(&(host_md->msg_perm),target_addr);
if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr))
return -TARGET_EFAULT;
host_md->msg_stime = tswapl(target_md->msg_stime);
host_md->msg_rtime = tswapl(target_md->msg_rtime);
host_md->msg_ctime = tswapl(target_md->msg_ctime);
@ -1888,7 +1894,8 @@ static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr,
if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0))
return -TARGET_EFAULT;
host_to_target_ipc_perm(target_addr,&(host_md->msg_perm));
if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm)))
return -TARGET_EFAULT;
target_md->msg_stime = tswapl(host_md->msg_stime);
target_md->msg_rtime = tswapl(host_md->msg_rtime);
target_md->msg_ctime = tswapl(host_md->msg_ctime);
@ -1901,26 +1908,69 @@ static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr,
return 0;
}
static inline abi_long do_msgctl(int first, int second, abi_long ptr)
struct target_msginfo {
int msgpool;
int msgmap;
int msgmax;
int msgmnb;
int msgmni;
int msgssz;
int msgtql;
unsigned short int msgseg;
};
static inline abi_long host_to_target_msginfo(abi_ulong target_addr,
struct msginfo *host_msginfo)
{
struct target_msginfo *target_msginfo;
if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0))
return -TARGET_EFAULT;
__put_user(host_msginfo->msgpool, &target_msginfo->msgpool);
__put_user(host_msginfo->msgmap, &target_msginfo->msgmap);
__put_user(host_msginfo->msgmax, &target_msginfo->msgmax);
__put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb);
__put_user(host_msginfo->msgmni, &target_msginfo->msgmni);
__put_user(host_msginfo->msgssz, &target_msginfo->msgssz);
__put_user(host_msginfo->msgtql, &target_msginfo->msgtql);
__put_user(host_msginfo->msgseg, &target_msginfo->msgseg);
unlock_user_struct(target_msginfo, target_addr, 1);
}
static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr)
{
struct msqid_ds dsarg;
int cmd = second&0xff;
abi_long ret = 0;
switch( cmd ) {
struct msginfo msginfo;
abi_long ret = -TARGET_EINVAL;
cmd &= 0xff;
switch (cmd) {
case IPC_STAT:
case IPC_SET:
target_to_host_msqid_ds(&dsarg,ptr);
ret = get_errno(msgctl(first, cmd, &dsarg));
host_to_target_msqid_ds(ptr,&dsarg);
default:
ret = get_errno(msgctl(first, cmd, &dsarg));
case MSG_STAT:
if (target_to_host_msqid_ds(&dsarg,ptr))
return -TARGET_EFAULT;
ret = get_errno(msgctl(msgid, cmd, &dsarg));
if (host_to_target_msqid_ds(ptr,&dsarg))
return -TARGET_EFAULT;
break;
case IPC_RMID:
ret = get_errno(msgctl(msgid, cmd, NULL));
break;
case IPC_INFO:
case MSG_INFO:
ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo));
if (host_to_target_msginfo(ptr, &msginfo))
return -TARGET_EFAULT;
break;
}
return ret;
}
struct target_msgbuf {
abi_ulong mtype;
char mtext[1];
abi_long mtype;
char mtext[1];
};
static inline abi_long do_msgsnd(int msqid, abi_long msgp,
@ -1933,8 +1983,8 @@ static inline abi_long do_msgsnd(int msqid, abi_long msgp,
if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0))
return -TARGET_EFAULT;
host_mb = malloc(msgsz+sizeof(long));
host_mb->mtype = tswapl(target_mb->mtype);
memcpy(host_mb->mtext,target_mb->mtext,msgsz);
host_mb->mtype = (abi_long) tswapl(target_mb->mtype);
memcpy(host_mb->mtext, target_mb->mtext, msgsz);
ret = get_errno(msgsnd(msqid, host_mb, msgsz, msgflg));
free(host_mb);
unlock_user_struct(target_mb, msgp, 0);
@ -1943,7 +1993,7 @@ static inline abi_long do_msgsnd(int msqid, abi_long msgp,
}
static inline abi_long do_msgrcv(int msqid, abi_long msgp,
unsigned int msgsz, int msgtype,
unsigned int msgsz, abi_long msgtyp,
int msgflg)
{
struct target_msgbuf *target_mb;
@ -1953,8 +2003,10 @@ static inline abi_long do_msgrcv(int msqid, abi_long msgp,
if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0))
return -TARGET_EFAULT;
host_mb = malloc(msgsz+sizeof(long));
ret = get_errno(msgrcv(msqid, host_mb, msgsz, 1, msgflg));
ret = get_errno(msgrcv(msqid, host_mb, msgsz, tswapl(msgtyp), msgflg));
if (ret > 0) {
abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong);
target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0);
@ -1962,9 +2014,10 @@ static inline abi_long do_msgrcv(int msqid, abi_long msgp,
ret = -TARGET_EFAULT;
goto end;
}
memcpy(target_mb->mtext, host_mb->mtext, ret);
memcpy(target_mb->mtext, host_mb->mtext, ret);
unlock_user(target_mtext, target_mtext_addr, ret);
}
target_mb->mtype = tswapl(host_mb->mtype);
free(host_mb);
@ -1974,6 +2027,7 @@ end:
return ret;
}
#ifdef TARGET_NR_ipc
/* ??? This only works with linear mappings. */
/* do_ipc() must return target values and target errnos. */
static abi_long do_ipc(unsigned int call, int first,
@ -2006,34 +2060,41 @@ static abi_long do_ipc(unsigned int call, int first,
ret = -TARGET_ENOSYS;
break;
case IPCOP_msgget:
ret = get_errno(msgget(first, second));
break;
case IPCOP_msgget:
ret = get_errno(msgget(first, second));
break;
case IPCOP_msgsnd:
ret = do_msgsnd(first, ptr, second, third);
break;
case IPCOP_msgsnd:
ret = do_msgsnd(first, ptr, second, third);
break;
case IPCOP_msgctl:
ret = do_msgctl(first, second, ptr);
break;
case IPCOP_msgctl:
ret = do_msgctl(first, second, ptr);
break;
case IPCOP_msgrcv:
{
/* XXX: this code is not correct */
struct ipc_kludge
{
void *__unbounded msgp;
long int msgtyp;
};
struct ipc_kludge *foo = (struct ipc_kludge *)g2h(ptr);
struct msgbuf *msgp = (struct msgbuf *) foo->msgp;
ret = do_msgrcv(first, (long)msgp, second, 0, third);
case IPCOP_msgrcv:
switch (version) {
case 0:
{
struct target_ipc_kludge {
abi_long msgp;
abi_long msgtyp;
} *tmp;
if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) {
ret = -TARGET_EFAULT;
break;
}
break;
ret = do_msgrcv(first, tmp->msgp, second, tmp->msgtyp, third);
unlock_user_struct(tmp, ptr, 0);
break;
}
default:
ret = do_msgrcv(first, ptr, second, fifth, third);
}
break;
case IPCOP_shmat:
{