extern int DEBUGLEVEL;
extern pstring sesssetup_user;
-extern int global_oplocks_open;
-extern uint16 oplock_port;
+extern uint16 global_oplock_port;
/****************************************************************************
fd support routines - attempt to do a dos_open
****************************************************************************/
-static int fd_attempt_open(char *fname, int flags, int mode)
+static int fd_attempt_open(char *fname, int flags, mode_t mode)
{
int fd = dos_open(fname,flags,mode);
fd support routines - attempt to re-open an already open fd as O_RDWR.
Save the already open fd (we cannot close due to POSIX file locking braindamage.
****************************************************************************/
-static void fd_attempt_reopen(char *fname, int mode, file_fd_struct *fd_ptr)
+static void fd_attempt_reopen(char *fname, mode_t mode, file_fd_struct *fd_ptr)
{
int fd = dos_open( fname, O_RDWR, mode);
open a file
****************************************************************************/
static void open_file(files_struct *fsp,connection_struct *conn,
- char *fname1,int flags,int mode, SMB_STRUCT_STAT *sbuf)
+ char *fname1,int flags,mode_t mode, SMB_STRUCT_STAT *sbuf)
{
extern struct current_user current_user;
pstring fname;
SMB_STRUCT_STAT statbuf;
file_fd_struct *fd_ptr;
- int accmode = (flags & (O_RDONLY | O_WRONLY | O_RDWR));
+ int accmode = (flags & O_ACCMODE);
fsp->open = False;
fsp->fd_ptr = 0;
/* this handles a bug in Win95 - it doesn't say to create the file when it
should */
if (conn->printer) {
- flags |= O_CREAT;
+ flags |= (O_CREAT|O_EXCL);
}
/*
if ((fd_ptr->fd >=0) &&
conn->printer && lp_minprintspace(SNUM(conn))) {
pstring dname;
- int dum1,dum2,dum3;
+ SMB_BIG_UINT dum1,dum2,dum3;
char *p;
pstrcpy(dname,fname);
p = strrchr(dname,'/');
if (p) *p = 0;
- if (sys_disk_free(dname,&dum1,&dum2,&dum3) <
- lp_minprintspace(SNUM(conn))) {
+ if (sys_disk_free(dname,&dum1,&dum2,&dum3) < (SMB_BIG_UINT)lp_minprintspace(SNUM(conn))) {
if(fd_attempt_close(fd_ptr) == 0)
dos_unlink(fname);
fsp->fd_ptr = 0;
conn->num_files_open));
}
+}
+
+/****************************************************************************
+ If it's a read-only file, and we were compiled with mmap enabled,
+ try and mmap the file. This is split out from open_file() above
+ as mmap'ing the file can cause the kernel reference count to
+ be incremented, which can cause kernel oplocks to be refused.
+ Splitting this call off allows the kernel oplock to be granted, then
+ the file mmap'ed.
+****************************************************************************/
+static void mmap_open_file(files_struct *fsp)
+{
#if WITH_MMAP
/* mmap it if read-only */
if (!fsp->can_write) {
- fsp->mmap_size = file_size(fname);
- fsp->mmap_ptr = (char *)mmap(NULL,fsp->mmap_size,
- PROT_READ,MAP_SHARED,fsp->fd_ptr->fd,0);
-
- if (fsp->mmap_ptr == (char *)-1 || !fsp->mmap_ptr) {
- DEBUG(3,("Failed to mmap() %s - %s\n",
- fname,strerror(errno)));
- fsp->mmap_ptr = NULL;
+ fsp->mmap_size = dos_file_size(fsp->fsp_name);
+ if (fsp->mmap_size < MAX_MMAP_SIZE) {
+ fsp->mmap_ptr = (char *)sys_mmap(NULL,fsp->mmap_size,
+ PROT_READ,MAP_SHARED,fsp->fd_ptr->fd,(SMB_OFF_T)0);
+
+ if (fsp->mmap_ptr == (char *)-1 || !fsp->mmap_ptr) {
+ DEBUG(3,("Failed to mmap() %s - %s\n",
+ fsp->fsp_name,strerror(errno)));
+ fsp->mmap_ptr = NULL;
+ }
}
}
#endif
}
-
/****************************************************************************
C. Hoch 11/22/95
Helper for open_file_shared.
static void truncate_unless_locked(files_struct *fsp, connection_struct *conn, int token,
BOOL *share_locked)
{
- if (fsp->can_write){
-#ifdef LARGE_SMB_OFF_T
- if (is_locked(fsp,conn,0x3FFFFFFFFFFFFFFFLL,0,F_WRLCK)){
-#else
- if (is_locked(fsp,conn,0x3FFFFFFF,0,F_WRLCK)){
-#endif
- /* If share modes are in force for this connection we
- have the share entry locked. Unlock it before closing. */
- if (*share_locked && lp_share_modes(SNUM(conn)))
- unlock_share_entry( conn, fsp->fd_ptr->dev,
- fsp->fd_ptr->inode, token);
- close_file(fsp,False);
- /* Share mode no longer locked. */
- *share_locked = False;
- errno = EACCES;
- unix_ERR_class = ERRDOS;
- unix_ERR_code = ERRlock;
- }
- else
- sys_ftruncate(fsp->fd_ptr->fd,0);
- }
+ if (fsp->can_write){
+ SMB_OFF_T mask2 = ((SMB_OFF_T)0x3) << (SMB_OFF_T_BITS-4);
+ SMB_OFF_T mask = (mask2<<2);
+
+ if (is_locked(fsp,conn,~mask,0,F_WRLCK)){
+ /* If share modes are in force for this connection we
+ have the share entry locked. Unlock it before closing. */
+ if (*share_locked && lp_share_modes(SNUM(conn)))
+ unlock_share_entry( conn, fsp->fd_ptr->dev,
+ fsp->fd_ptr->inode, token);
+ close_file(fsp,False);
+ /* Share mode no longer locked. */
+ *share_locked = False;
+ errno = EACCES;
+ unix_ERR_class = ERRDOS;
+ unix_ERR_code = ERRlock;
+ } else {
+ sys_ftruncate(fsp->fd_ptr->fd,0);
+ }
+ }
}
char *fname,
BOOL fcbopen, int *flags)
{
- int old_open_mode = share->share_mode &0xF;
- int old_deny_mode = (share->share_mode >>4)&7;
+ int old_open_mode = GET_OPEN_MODE(share->share_mode);
+ int old_deny_mode = GET_DENY_MODE(share->share_mode);
+
+ /*
+ * Don't allow any open once the delete on close flag has been
+ * set.
+ */
+
+ if(GET_DELETE_ON_CLOSE_FLAG(share->share_mode))
+ {
+ DEBUG(5,("check_share_mode: Failing open on file %s as delete on close flag is set.\n",
+ fname ));
+ unix_ERR_class = ERRDOS;
+ unix_ERR_code = ERRnoaccess;
+ return False;
+ }
if (old_deny_mode > 4 || old_open_mode > 2)
{
DEBUG(0,("Invalid share mode found (%d,%d,%d) on file %s\n",
deny_mode,old_deny_mode,old_open_mode,fname));
+
+ unix_ERR_class = ERRDOS;
+ unix_ERR_code = ERRbadshare;
+
return False;
}
DEBUG(2,("Share violation on file (%d,%d,%d,%d,%s,fcbopen = %d, flags = %d) = %d\n",
deny_mode,old_deny_mode,old_open_mode,
share->pid,fname, fcbopen, *flags, access_allowed));
+
+ unix_ERR_class = ERRDOS;
+ unix_ERR_code = ERRbadshare;
+
return False;
}
*flags = O_WRONLY;
}
+
return True;
}
/****************************************************************************
open a file with a share mode
****************************************************************************/
+
void open_file_shared(files_struct *fsp,connection_struct *conn,char *fname,int share_mode,int ofun,
- int mode,int oplock_request, int *Access,int *action)
+ mode_t mode,int oplock_request, int *Access,int *action)
{
int flags=0;
int flags2=0;
- int deny_mode = (share_mode>>4)&7;
+ int deny_mode = GET_DENY_MODE(share_mode);
+ BOOL allow_share_delete = GET_ALLOW_SHARE_DELETE(share_mode);
SMB_STRUCT_STAT sbuf;
- BOOL file_existed = file_exist(fname,&sbuf);
+ BOOL file_existed = dos_file_exist(fname,&sbuf);
BOOL share_locked = False;
BOOL fcbopen = False;
int token;
fsp->open = False;
fsp->fd_ptr = 0;
+ DEBUG(10,("open_file_shared: fname = %s, share_mode = %x, ofun = %x, mode = %o, oplock request = %d\n",
+ fname, share_mode, ofun, (int)mode, oplock_request ));
+
/* this is for OS/2 EAs - try and say we don't support them */
if (strstr(fname,".+,;=[]."))
{
unix_ERR_code = ERROR_EAS_NOT_SUPPORTED;
#endif /* OS2_WPS_FIX */
+ DEBUG(5,("open_file_shared: OS/2 EA's are not supported.\n"));
return;
}
- if ((ofun & 0x3) == 0 && file_existed)
+ if ((GET_FILE_OPEN_DISPOSITION(ofun) == FILE_EXISTS_FAIL) && file_existed)
{
+ DEBUG(5,("open_file_shared: create new requested for file %s and file already exists.\n",
+ fname ));
errno = EEXIST;
return;
}
- if (ofun & 0x10)
+ if (GET_FILE_CREATE_DISPOSITION(ofun) == FILE_CREATE_IF_NOT_EXIST)
flags2 |= O_CREAT;
- if ((ofun & 0x3) == 2)
+
+ if (GET_FILE_OPEN_DISPOSITION(ofun) == FILE_EXISTS_TRUNCATE)
flags2 |= O_TRUNC;
+ if (GET_FILE_OPEN_DISPOSITION(ofun) == FILE_EXISTS_FAIL)
+ flags2 |= O_EXCL;
+
/* note that we ignore the append flag as
append does not mean the same thing under dos and unix */
- switch (share_mode&0xF)
+ switch (GET_OPEN_MODE(share_mode))
{
- case 1:
+ case DOS_OPEN_WRONLY:
flags = O_WRONLY;
break;
- case 0xF:
+ case DOS_OPEN_FCB:
fcbopen = True;
flags = O_RDWR;
break;
- case 2:
+ case DOS_OPEN_RDWR:
flags = O_RDWR;
break;
default:
}
#if defined(O_SYNC)
- if (share_mode&(1<<14)) {
+ if (GET_FILE_SYNC_OPENMODE(share_mode)) {
flags2 |= O_SYNC;
}
#endif /* O_SYNC */
{
if (!fcbopen)
{
+ DEBUG(5,("open_file_shared: read/write access requested for file %s on read only %s\n",
+ fname, !CAN_WRITE(conn) ? "share" : "file" ));
errno = EACCES;
return;
}
return;
}
- if (deny_mode == DENY_FCB) deny_mode = DENY_DOS;
+ if (deny_mode == DENY_FCB)
+ deny_mode = DENY_DOS;
if (lp_share_modes(SNUM(conn)))
{
free((char *)old_shares);
unlock_share_entry(conn, dev, inode, token);
errno = EACCES;
- unix_ERR_class = ERRDOS;
- unix_ERR_code = ERRbadshare;
return;
}
}
DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o\n",
- flags,flags2,mode));
+ flags,flags2,(int)mode));
open_file(fsp,conn,fname,flags|(flags2&~(O_TRUNC)),mode,file_existed ? &sbuf : 0);
if (!fsp->open && flags==O_RDWR && errno!=ENOENT && fcbopen)
switch (flags)
{
case O_RDONLY:
- open_mode = 0;
+ open_mode = DOS_OPEN_RDONLY;
break;
case O_RDWR:
- open_mode = 2;
+ open_mode = DOS_OPEN_RDWR;
break;
case O_WRONLY:
- open_mode = 1;
+ open_mode = DOS_OPEN_WRONLY;
break;
}
- fsp->share_mode = (deny_mode<<4) | open_mode;
+ fsp->share_mode = SET_DENY_MODE(deny_mode) |
+ SET_OPEN_MODE(open_mode) |
+ SET_ALLOW_SHARE_DELETE(allow_share_delete);
if (Access)
(*Access) = open_mode;
if (lp_share_modes(SNUM(conn)))
{
uint16 port = 0;
+
/* JRA. Currently this only services Exlcusive and batch
oplocks (no other opens on this file). This needs to
be extended to level II oplocks (multiple reader
oplocks). */
- if(oplock_request && (num_share_modes == 0) && lp_oplocks(SNUM(conn)) &&
- !IS_VETO_OPLOCK_PATH(conn,fname))
+ if((oplock_request) && (num_share_modes == 0) && lp_oplocks(SNUM(conn)) &&
+ !IS_VETO_OPLOCK_PATH(conn,fname) && set_file_oplock(fsp) )
{
- fsp->granted_oplock = True;
- fsp->sent_oplock_break = False;
- global_oplocks_open++;
- port = oplock_port;
-
- DEBUG(5,("open_file_shared: granted oplock (%x) on file %s, \
-dev = %x, inode = %.0f\n", oplock_request, fname, (unsigned int)dev, (double)inode));
-
+ port = global_oplock_port;
}
else
{
port = 0;
oplock_request = 0;
}
+
set_share_mode(token, fsp, port, oplock_request);
}
if ((flags2&O_TRUNC) && file_existed)
truncate_unless_locked(fsp,conn,token,&share_locked);
+
+ /*
+ * Attempt to mmap a read only file.
+ * Moved until after a kernel oplock may
+ * be granted due to reference count issues. JRA.
+ */
+ mmap_open_file(fsp);
}
if (share_locked && lp_share_modes(SNUM(conn)))
unlock_share_entry( conn, dev, inode, token);
}
-
-
/****************************************************************************
Open a directory from an NT SMB call.
****************************************************************************/
+
int open_directory(files_struct *fsp,connection_struct *conn,
- char *fname, int smb_ofun, int unixmode, int *action)
+ char *fname, int smb_ofun, mode_t unixmode, int *action)
{
extern struct current_user current_user;
SMB_STRUCT_STAT st;
* Create the directory.
*/
- if(dos_mkdir(fname, unixmode) < 0) {
+ if(dos_mkdir(fname, unix_mode(conn,aDIR)) < 0) {
DEBUG(0,("open_directory: unable to create %s. Error was %s\n",
fname, strerror(errno) ));
return -1;
check if the share mode on a file allows it to be deleted or unlinked
return True if sharing doesn't prevent the operation
********************************************************************/
+
BOOL check_file_sharing(connection_struct *conn,char *fname, BOOL rename_op)
{
int i;
}
}
- /* someone else has a share lock on it, check to see
- if we can too */
- if ((share_entry->share_mode != DENY_DOS) || (share_entry->pid != pid))
+ /*
+ * If this is a delete request and ALLOW_SHARE_DELETE is set then allow
+ * this to proceed. This takes precedence over share modes.
+ */
+
+ if(!rename_op && GET_ALLOW_SHARE_DELETE(share_entry->share_mode))
+ continue;
+
+ /*
+ * Someone else has a share lock on it, check to see
+ * if we can too.
+ */
+
+ if ((GET_DENY_MODE(share_entry->share_mode) != DENY_DOS) || (share_entry->pid != pid))
goto free_and_exit;
} /* end for */
/* XXXX exactly what share mode combinations should be allowed for
deleting/renaming? */
- /* If we got here then either there were no share modes or
- all share modes were DENY_DOS and the pid == getpid() */
+ /*
+ * If we got here then either there were no share modes or
+ * all share modes were DENY_DOS and the pid == getpid() or
+ * delete access was requested and all share modes had the
+ * ALLOW_SHARE_DELETE bit set (takes precedence over other
+ * share modes).
+ */
+
ret = True;
free_and_exit:
free((char *)old_shares);
return(ret);
}
-
-