//------------------------------------------------------------------------------
static void SYSRAM_UnlockUser(SYSRAM_USER_ENUM const User)
{ if(SYSRAM_UserIsUnlocked(User))
{
return;
}
// Debug Log.
if((1<<User) & SysramLogUserMask)
{
SYSRAM_USER_STRUCT*const pUserInfo = &Sysram.UserInfo[User];
MUINT32 Sec, USec;
MUINT64 Time64 = 0;
SYSRAM_GetTime(&Time64,&Sec,&USec);
//
LOG_MSG("[%s][%lu bytes]Time(%lu.%06lu - %lu.%06lu)(%lu.%06lu)",
SysramUserName[User],
Sysram.AllocatedSize[User],
pUserInfo->TimeS,
pUserInfo->TimeUS,
Sec,
USec,
((MUINT32)(Time64-pUserInfo->Time64))/1000,
((MUINT32)(Time64-pUserInfo->Time64))%1000);
}
//
if(Sysram.TotalUserCount > 0)
{
Sysram.TotalUserCount--;
}
Sysram.AllocatedTbl &= (~(1 << User));
Sysram.AllocatedSize[User] = 0;
SYSRAM_ResetUserTaskInfo(User);
}
/* ------------------------------------------------------------------------------ */
static int SYSRAM_Release(struct inode *pInode, struct file *pFile)
{
MUINT32 Index = 0;
MUINT32 Sec = 0, USec = 0;
MUINT64 Time64 = 0;
SYSRAM_PROC_STRUCT *pProc;
/* */
SYSRAM_GetTime(&Time64, &Sec, &USec);
/* */
LOG_MSG("Cur:Name(%s),pid(%d),tgid(%d),Time(%ld.%06ld)",
current->comm, current->pid, current->tgid, Sec, USec);
/* */
if (pFile->private_data != NULL) {
pProc = (SYSRAM_PROC_STRUCT *) (pFile->private_data);
/* */
if (pProc->Pid != 0 || pProc->Tgid != 0 || pProc->Table != 0) {
/* */
LOG_WRN("Proc:Name(%s),pid(%d),tgid(%d),Table(0x%08lX),Time(%ld.%06ld)",
pProc->ProcName,
pProc->Pid, pProc->Tgid, pProc->Table, pProc->TimeS, pProc->TimeUS);
/* */
if (pProc->Table) {
LOG_WRN("Force to release");
/*
LOG_WRN("Proc:Name(%s),pid(%d),tgid(%d),Table(0x%08lX),Time(%ld.%06ld)",
pProc->ProcName,
pProc->Pid,
pProc->Tgid,
pProc->Table,
pProc->TimeS,
pProc->TimeUS);
*/
SYSRAM_DumpLayout();
/* */
for (Index = 0; Index < SYSRAM_USER_AMOUNT; Index++) {
if (pProc->Table & (1 << Index)) {
SYSRAM_IOC_Free((SYSRAM_USER_ENUM) Index);
}
}
}
}
/* */
kfree(pFile->private_data);
pFile->private_data = NULL;
} else {
LOG_WRN("private_data is NULL");
/*
LOG_WRN("Cur:Name(%s),pid(%d),tgid(%d),Time(%ld.%06ld)",
current->comm,
current->pid,
current->tgid,
Sec,
USec);
*/
}
/* */
return 0;
}
//------------------------------------------------------------------------------
static int SYSRAM_Open(
struct inode* pInode,
struct file* pFile)
{
int Ret = 0;
MUINT32 Sec = 0,USec = 0;
MUINT64 Time64 = 0;
SYSRAM_PROC_STRUCT* pProc;
//
SYSRAM_GetTime(&Time64, &Sec, &USec);
//
LOG_MSG("Cur:Name(%s),pid(%d),tgid(%d),Time(%ld.%06ld)",
current->comm,
current->pid,
current->tgid,
Sec,
USec);
//
SYSRAM_SpinLock();
//
pFile->private_data = kmalloc(sizeof(SYSRAM_PROC_STRUCT) , GFP_ATOMIC);
if(pFile->private_data == NULL)
{
Ret = -ENOMEM;
}
else
{
pProc = (SYSRAM_PROC_STRUCT*)(pFile->private_data);
pProc->Pid = 0;
pProc->Tgid = 0;
strcpy(pProc->ProcName,SYSRAM_PROC_NAME);
pProc->Table = 0;
pProc->Time64 = Time64;
pProc->TimeS = Sec;
pProc->TimeUS = USec;
}
//
SYSRAM_SpinUnlock();
//
if(Ret == (-ENOMEM))
{
LOG_ERR("No enough memory");
/*
LOG_ERR("Cur:Name(%s),pid(%d),tgid(%d),Time(%ld.%06ld)",
current->comm,
current->pid,
current->tgid,
Sec,
USec);
*/
}
//
return Ret;
}
/* ------------------------------------------------------------------------------ */
static void SYSRAM_SetUserTaskInfo(SYSRAM_USER_ENUM const User)
{
if (!SYSRAM_IsBadOwner(User)) {
SYSRAM_USER_STRUCT * const pUserInfo = &Sysram.UserInfo[User];
/* */
pUserInfo->pid = current->pid;
pUserInfo->tgid = current->tgid;
memcpy(pUserInfo->ProcName, current->comm, sizeof(pUserInfo->ProcName));
/* */
SYSRAM_GetTime(&(pUserInfo->Time64), &(pUserInfo->TimeS), &(pUserInfo->TimeUS));
}
}
//------------------------------------------------------------------------------
static long SYSRAM_Ioctl(
struct file* pFile,
unsigned int Cmd,
unsigned long Param)
{
MINT32 Ret = 0;
MUINT32 Sec = 0,USec = 0;
MUINT64 Time64 = 0;
SYSRAM_PROC_STRUCT* pProc = (SYSRAM_PROC_STRUCT*)pFile->private_data;
SYSRAM_ALLOC_STRUCT Alloc;
SYSRAM_USER_ENUM User;
//
SYSRAM_GetTime(&Time64, &Sec, &USec);
/*
LOG_MSG("Cur:Name(%s),pid(%d),tgid(%d),Time(%ld.%06ld)",
current->comm,
current->pid,
current->tgid,
Sec,
USec);
*/
if(pFile->private_data == NULL)
{
LOG_WRN("private_data is NULL.");
Ret = -EFAULT;
goto EXIT;
}
//
switch(Cmd)
{
case SYSRAM_ALLOC:
{
if(copy_from_user(&Alloc, (void*)Param, sizeof(SYSRAM_ALLOC_STRUCT)) == 0)
{
if(SYSRAM_IsBadOwner(Alloc.User))
{
LOG_ERR("User(%d) out of range(%d)",Alloc.User,SYSRAM_USER_AMOUNT);
Ret = -EFAULT;
goto EXIT;
}
//
Alloc.Addr = SYSRAM_IOC_Alloc(
Alloc.User,
Alloc.Size,
Alloc.Alignment,
Alloc.TimeoutMS);
if(Alloc.Addr != 0)
{
SYSRAM_SpinLock();
pProc->Table |= (1 << Alloc.User);
if(pProc->Tgid == 0)
{
pProc->Pid = current->pid;
pProc->Tgid = current->tgid;
strcpy(pProc->ProcName,current->comm);
SYSRAM_SpinUnlock();
}
else
{
SYSRAM_SpinUnlock();
if(pProc->Tgid != current->tgid)
{
LOG_ERR("Tgid is inconsistent");
Ret = -EFAULT;
}
}
}
else
{
Ret = -EFAULT;
}
//
if(copy_to_user((void*)Param, &Alloc, sizeof(SYSRAM_ALLOC_STRUCT)) )
{
LOG_ERR("copy to user failed");
Ret = -EFAULT;
}
}
else
{
LOG_ERR("copy_from_user fail");
Ret = -EFAULT;
}
break;
}
//
case SYSRAM_FREE:
{
if(copy_from_user(&User, (void*)Param, sizeof(SYSRAM_USER_ENUM)) == 0)
{
if(SYSRAM_IsBadOwner(User))
{
LOG_ERR("User(%d) out of range(%d)",User,SYSRAM_USER_AMOUNT);
Ret = -EFAULT;
goto EXIT;
}
//
SYSRAM_SpinLock();
if((pProc->Table) & (1 << User))
{
SYSRAM_SpinUnlock();
SYSRAM_IOC_Free(User);
SYSRAM_SpinLock();
//
pProc->Table &= (~(1 << User));
if(pProc->Table == 0)
{
pProc->Pid = 0;
pProc->Tgid = 0;
strcpy(pProc->ProcName,SYSRAM_PROC_NAME);
}
SYSRAM_SpinUnlock();
}
else
{
SYSRAM_SpinUnlock();
LOG_WRN("Freeing unallocated buffer user(%d)",User);
Ret = -EFAULT;
}
}
else
{
LOG_ERR("copy_from_user fail");
Ret = -EFAULT;
}
break;
}
case SYSRAM_DUMP:
{
SYSRAM_DumpLayout();
break;
}
default:
{
LOG_WRN("No such command");
Ret = -EINVAL;
break;
}
}
//
EXIT:
if(Ret != 0)
{
LOG_ERR("Fail");
LOG_ERR("Cur:Name(%s),pid(%d),tgid(%d),Time(%ld.%06ld)",
current->comm,
current->pid,
current->tgid,
Sec,
USec);
if(pFile->private_data != NULL)
{
LOG_ERR("Proc:Name(%s),pid(%d),tgid(%d),Table(0x%08lX),Time(%ld.%06ld)",
pProc->ProcName,
pProc->Pid,
pProc->Tgid,
pProc->Table,
Sec,
USec);
}
}
//
return Ret;
}
//------------------------------------------------------------------------------
static int SYSRAM_Flush(
struct file* pFile,
fl_owner_t Id)
{
MUINT32 Index = 0;
MUINT32 Sec = 0,USec = 0;
MUINT64 Time64 = 0;
SYSRAM_PROC_STRUCT* pProc;
//
SYSRAM_GetTime(&Time64, &Sec, &USec);
//
LOG_MSG("Cur:Name(%s),pid(%d),tgid(%d),Time(%ld.%06ld)",
current->comm,
current->pid,
current->tgid,
Sec,
USec);
//
if(pFile->private_data != NULL)
{
pProc = (SYSRAM_PROC_STRUCT *)pFile->private_data;
//
if( pProc->Pid != 0 ||
pProc->Tgid != 0 ||
pProc->Table != 0)
{
//
LOG_WRN("Proc:Name(%s),pid(%d),tgid(%d),Table(0x%08lX),Time(%ld.%06ld)",
pProc->ProcName,
pProc->Pid,
pProc->Tgid,
pProc->Table,
pProc->TimeS,
pProc->TimeUS);
//
if( pProc->Tgid == 0 &&
pProc->Table != 0)
{
LOG_ERR("No Tgid info");
/*
LOG_ERR("Cur:Name(%s),pid(%d),tgid(%d),Time(%ld.%06ld)",
current->comm,
current->pid,
current->tgid,
Sec,
USec);
LOG_ERR("Proc:Name(%s),pid(%d),tgid(%d),Table(0x%08lX),Time(%ld.%06ld)",
pProc->ProcName,
pProc->Pid,
pProc->Tgid,
pProc->Table,
pProc->TimeS,
pProc->TimeUS);
*/
}
else if( (pProc->Tgid == current->tgid) ||
((pProc->Tgid != current->tgid) && (strcmp(current->comm, "binder") == 0)))
{
if(pProc->Table)
{
LOG_WRN("Force to release");
/*
LOG_WRN("Cur:Name(%s),pid(%d),tgid(%d),Time(%ld.%06ld)",
current->comm,
current->pid,
current->tgid,
Sec,
USec);
*/
SYSRAM_DumpLayout();
//
for(Index = 0 ; Index < SYSRAM_USER_AMOUNT; Index++)
{
if(pProc->Table & (1 << Index))
{
SYSRAM_IOC_Free((SYSRAM_USER_ENUM)Index);
}
}
//
pProc->Table= 0;
}
}
}
}
else
{
LOG_WRN("private_data is NULL");
/*
LOG_WRN("Cur:Name(%s),pid(%d),tgid(%d),Time(%ld.%06ld)",
current->comm,
current->pid,
current->tgid,
Sec,
USec);
*/
}
//
return 0;
}