Unix SMB/CIFS implementation.
file opening and share modes
Copyright (C) Andrew Tridgell 1992-1998
- Copyright (C) Jeremy Allison 2001
+ Copyright (C) Jeremy Allison 2001-2004
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
extern userdom_struct current_user_info;
extern uint16 global_oplock_port;
+extern uint16 global_smbpid;
extern BOOL global_client_failed_oplock_break;
+struct dev_inode_bundle {
+ SMB_DEV_T dev;
+ SMB_INO_T inode;
+};
+
/****************************************************************************
fd support routines - attempt to do a dos_open.
****************************************************************************/
-static int fd_open(struct connection_struct *conn, char *fname,
+static int fd_open(struct connection_struct *conn, const char *fname,
int flags, mode_t mode)
{
int fd;
flags |= O_NOFOLLOW;
#endif
- fd = conn->vfs_ops.open(conn,fname,flags,mode);
-
- /* Fix for files ending in '.' */
- if((fd == -1) && (errno == ENOENT) &&
- (strchr_m(fname,'.')==NULL)) {
- pstrcat(fname,".");
- fd = conn->vfs_ops.open(conn,fname,flags,mode);
- }
+ fd = SMB_VFS_OPEN(conn,fname,flags,mode);
DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n", fname,
flags, (int)mode, fd, (fd == -1) ? strerror(errno) : "" ));
Check a filename for the pipe string.
****************************************************************************/
-static void check_for_pipe(char *fname)
+static void check_for_pipe(const char *fname)
{
/* special case of pipe opens */
char s[10];
StrnCpy(s,fname,sizeof(s)-1);
- strlower(s);
+ strlower_m(s);
if (strstr(s,"pipe/")) {
DEBUG(3,("Rejecting named pipe open for %s\n",fname));
unix_ERR_class = ERRSRV;
unix_ERR_code = ERRaccess;
+ unix_ERR_ntstatus = NT_STATUS_ACCESS_DENIED;
}
}
****************************************************************************/
static BOOL open_file(files_struct *fsp,connection_struct *conn,
- const char *fname1,SMB_STRUCT_STAT *psbuf,int flags,mode_t mode, uint32 desired_access)
+ const char *fname,SMB_STRUCT_STAT *psbuf,int flags,mode_t mode, uint32 desired_access)
{
extern struct current_user current_user;
- pstring fname;
int accmode = (flags & O_ACCMODE);
int local_flags = flags;
fsp->oplock_type = NO_OPLOCK;
errno = EPERM;
- pstrcpy(fname,fname1);
-
/* Check permissions */
/*
directory.
*/
flags &= ~O_CREAT;
+ local_flags &= ~O_CREAT;
}
}
local_flags |= O_NONBLOCK;
#endif
+ /* Don't create files with Microsoft wildcard characters. */
+ if ((local_flags & O_CREAT) && !VALID_STAT(*psbuf) && ms_has_wild(fname)) {
+ unix_ERR_class = ERRDOS;
+ unix_ERR_code = ERRinvalidname;
+ unix_ERR_ntstatus = NT_STATUS_OBJECT_NAME_INVALID;
+ return False;
+ }
+
/* Actually do the open */
fsp->fd = fd_open(conn, fname, local_flags, mode);
-
- /* Inherit the ACL if the file was created. */
- if ((local_flags & O_CREAT) && !VALID_STAT(*psbuf))
- inherit_access_acl(conn, fname, mode);
-
if (fsp->fd == -1) {
DEBUG(3,("Error opening file %s (%s) (local_flags=%d) (flags=%d)\n",
fname,strerror(errno),local_flags,flags));
check_for_pipe(fname);
return False;
}
+
+ /* Inherit the ACL if the file was created. */
+ if ((local_flags & O_CREAT) && !VALID_STAT(*psbuf))
+ inherit_access_acl(conn, fname, mode);
+
} else
fsp->fd = -1; /* What we used to call a stat open. */
int ret;
if (fsp->fd == -1)
- ret = vfs_stat(conn, fname, psbuf);
+ ret = SMB_VFS_STAT(conn, fname, psbuf);
else {
- ret = vfs_fstat(fsp,fsp->fd,psbuf);
+ ret = SMB_VFS_FSTAT(fsp,fsp->fd,psbuf);
/* If we have an fd, this stat should succeed. */
if (ret == -1)
DEBUG(0,("Error doing fstat on open file %s (%s)\n", fname,strerror(errno) ));
fsp->inode = psbuf->st_ino;
fsp->dev = psbuf->st_dev;
fsp->vuid = current_user.vuid;
+ fsp->file_pid = global_smbpid;
fsp->size = psbuf->st_size;
- fsp->pos = -1;
fsp->can_lock = True;
fsp->can_read = ((flags & O_WRONLY)==0);
fsp->can_write = ((flags & (O_WRONLY|O_RDWR))!=0);
fsp->is_directory = False;
fsp->is_stat = False;
fsp->directory_delete_on_close = False;
- fsp->conn = conn;
string_set(&fsp->fsp_name,fname);
fsp->wcp = NULL; /* Write cache pointer. */
BOOLSTR(fsp->can_read), BOOLSTR(fsp->can_write),
conn->num_files_open + 1));
+ errno = 0;
return True;
}
-/****************************************************************************
- C. Hoch 11/22/95
- Helper for open_file_shared.
- Truncate a file after checking locking; close file if locked.
- **************************************************************************/
-
-static int truncate_unless_locked(struct connection_struct *conn, files_struct *fsp)
-{
- SMB_BIG_UINT mask = (SMB_BIG_UINT)-1;
-
- if (is_locked(fsp,fsp->conn,mask,0,WRITE_LOCK,True)){
- errno = EACCES;
- unix_ERR_class = ERRDOS;
- unix_ERR_code = ERRlock;
- return -1;
- } else {
- return conn->vfs_ops.ftruncate(fsp,fsp->fd,0);
- }
-}
-
/*******************************************************************
-return True if the filename is one of the special executable types
+ Return True if the filename is one of the special executable types.
********************************************************************/
+
static BOOL is_executable(const char *fname)
{
if ((fname = strrchr_m(fname,'.'))) {
enum {AFAIL,AREAD,AWRITE,AALL};
/*******************************************************************
-reproduce the share mode access table
-this is horrendoously complex, and really can't be justified on any
-rational grounds except that this is _exactly_ what NT does. See
-the DENY1 and DENY2 tests in smbtorture for a comprehensive set of
-test routines.
+ Reproduce the share mode access table.
+ This is horrendoously complex, and really can't be justified on any
+ rational grounds except that this is _exactly_ what NT does. See
+ the DENY1 and DENY2 tests in smbtorture for a comprehensive set of
+ test routines.
********************************************************************/
+
static int access_table(int new_deny,int old_deny,int old_mode,
BOOL same_pid, BOOL isexe)
{
return(AFAIL);
}
-
/****************************************************************************
-check if we can open a file with a share mode
+ Check if we can open a file with a share mode.
****************************************************************************/
static BOOL check_share_mode(connection_struct *conn, share_mode_entry *share, int share_mode, uint32 desired_access,
int deny_mode = GET_DENY_MODE(share_mode);
int old_open_mode = GET_OPEN_MODE(share->share_mode);
int old_deny_mode = GET_DENY_MODE(share->share_mode);
+ BOOL non_io_open_request;
+ BOOL non_io_open_existing;
/*
* share modes = false means don't bother to check for
if(!lp_share_modes(SNUM(conn)))
return True;
+ if (desired_access & ~(SYNCHRONIZE_ACCESS|READ_CONTROL_ACCESS|FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES)) {
+ non_io_open_request = False;
+ } else {
+ non_io_open_request = True;
+ }
+
+ if (share->desired_access & ~(SYNCHRONIZE_ACCESS|READ_CONTROL_ACCESS|FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES)) {
+ non_io_open_existing = False;
+ } else {
+ non_io_open_existing = True;
+ }
+
/*
* Don't allow any opens 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;
- unix_ERR_ntstatus = NT_STATUS_DELETE_PENDING;
+ /* Use errno to map to correct error. */
+ unix_ERR_class = SMB_SUCCESS;
+ unix_ERR_code = 0;
+ unix_ERR_ntstatus = NT_STATUS_OK;
return False;
}
* and the existing desired_acces then share modes don't conflict.
*/
- if ( !(desired_access & (FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_EXECUTE)) &&
- !(share->desired_access & (FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_EXECUTE)) ) {
+ if (non_io_open_request && non_io_open_existing) {
/*
* Wrinkle discovered by smbtorture....
fname ));
unix_ERR_class = ERRDOS;
unix_ERR_code = ERRbadshare;
+ unix_ERR_ntstatus = NT_STATUS_SHARING_VIOLATION;
return False;
}
and existing desired access (0x%x) are non-data opens\n",
fname, (unsigned int)desired_access, (unsigned int)share->desired_access ));
return True;
+ } else if (non_io_open_request || non_io_open_existing) {
+ /*
+ * If either are non-io opens then share modes don't conflict.
+ */
+ DEBUG(5,("check_share_mode: One non-io open. Allowing open on file %s as desired access (0x%x) doesn't conflict with\
+existing desired access (0x%x).\n", fname, (unsigned int)desired_access, (unsigned int)share->desired_access ));
+ return True;
}
/*
fname ));
unix_ERR_class = ERRDOS;
unix_ERR_code = ERRbadshare;
+ unix_ERR_ntstatus = NT_STATUS_SHARING_VIOLATION;
return False;
}
fname ));
unix_ERR_class = ERRDOS;
unix_ERR_code = ERRbadshare;
+ unix_ERR_ntstatus = NT_STATUS_SHARING_VIOLATION;
return False;
}
unix_ERR_class = ERRDOS;
unix_ERR_code = ERRbadshare;
+ unix_ERR_ntstatus = NT_STATUS_SHARING_VIOLATION;
return False;
}
return True;
}
+
+#if defined(DEVELOPER)
+static void validate_my_share_entries(int num, share_mode_entry *share_entry)
+{
+ files_struct *fsp;
+
+ if (share_entry->pid != sys_getpid())
+ return;
+
+ fsp = file_find_dif(share_entry->dev, share_entry->inode, share_entry->share_file_id);
+ if (!fsp) {
+ DEBUG(0,("validate_my_share_entries: PANIC : %s\n", share_mode_str(num, share_entry) ));
+ smb_panic("validate_my_share_entries: Cannot match a share entry with an open file\n");
+ }
+
+ if (((uint16)fsp->oplock_type) != share_entry->op_type) {
+ pstring str;
+ DEBUG(0,("validate_my_share_entries: PANIC : %s\n", share_mode_str(num, share_entry) ));
+ slprintf(str, sizeof(str)-1, "validate_my_share_entries: file %s, oplock_type = 0x%x, op_type = 0x%x\n",
+ fsp->fsp_name, (unsigned int)fsp->oplock_type, (unsigned int)share_entry->op_type );
+ smb_panic(str);
+ }
+}
+#endif
+
+struct share_mode_entry_list {
+ struct share_mode_entry_list *next, *prev;
+ share_mode_entry entry;
+};
+
+static void free_broken_entry_list(struct share_mode_entry_list *broken_entry_list)
+{
+ while (broken_entry_list) {
+ struct share_mode_entry_list *broken_entry = broken_entry_list;
+ DLIST_REMOVE(broken_entry_list, broken_entry);
+ SAFE_FREE(broken_entry);
+ }
+}
+
/****************************************************************************
Deal with open deny mode and oplock break processing.
Invarient: Share mode must be locked on entry and exit.
int i;
int num_share_modes;
int oplock_contention_count = 0;
- share_mode_entry *old_shares = 0;
+ share_mode_entry *old_shares = NULL;
BOOL fcbopen = False;
- BOOL broke_oplock;
-
+ BOOL broke_oplock;
+
if(GET_OPEN_MODE(share_mode) == DOS_OPEN_FCB)
fcbopen = True;
num_share_modes = get_share_modes(conn, dev, inode, &old_shares);
- if(num_share_modes == 0)
+ if(num_share_modes == 0) {
+ SAFE_FREE(old_shares);
return 0;
+ }
+ if (desired_access && ((desired_access & ~(SYNCHRONIZE_ACCESS|FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES))==0) &&
+ ((desired_access & (SYNCHRONIZE_ACCESS|FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES)) != 0)) {
+ /* Stat open that doesn't trigger oplock breaks or share mode checks... ! JRA. */
+ SAFE_FREE(old_shares);
+ return num_share_modes;
+ }
+
/*
* Check if the share modes will give us access.
*/
do {
- share_mode_entry broken_entry;
-
+ struct share_mode_entry_list *broken_entry_list = NULL;
+ struct share_mode_entry_list *broken_entry = NULL;
+
broke_oplock = False;
*p_all_current_opens_are_level_II = True;
for(i = 0; i < num_share_modes; i++) {
+ BOOL cause_oplock_break = False;
share_mode_entry *share_entry = &old_shares[i];
+#if defined(DEVELOPER)
+ validate_my_share_entries(i, share_entry);
+#endif
+
/*
* By observation of NetBench, oplocks are broken *before* share
* modes are checked. This allows a file to be closed by the client
* it before continuing.
*/
- if((*p_oplock_request && EXCLUSIVE_OPLOCK_TYPE(share_entry->op_type)) ||
+ /* Was this a delete this file request ? */
+ if (!*p_oplock_request && desired_access == DELETE_ACCESS &&
+ !BATCH_OPLOCK_TYPE(share_entry->op_type)) {
+ /* Don't break the oplock in this case. */
+ cause_oplock_break = False;
+ } else if((*p_oplock_request && EXCLUSIVE_OPLOCK_TYPE(share_entry->op_type)) ||
(!*p_oplock_request && (share_entry->op_type != NO_OPLOCK))) {
-
+ cause_oplock_break = True;
+ }
+
+ if(cause_oplock_break) {
BOOL opb_ret;
DEBUG(5,("open_mode_check: oplock_request = %d, breaking oplock (%x) on file %s, \
dev = %x, inode = %.0f\n", *p_oplock_request, share_entry->op_type, fname, (unsigned int)dev, (double)inode));
+ /* Ensure the reply for the open uses the correct sequence number. */
+ /* This isn't a real deferred packet as it's response will also increment
+ * the sequence.
+ */
+ srv_defer_sign_response(get_current_mid());
+
/* Oplock break - unlock to request it. */
unlock_share_entry(conn, dev, inode);
errno = EACCES;
unix_ERR_class = ERRDOS;
unix_ERR_code = ERRbadshare;
+ unix_ERR_ntstatus = NT_STATUS_SHARING_VIOLATION;
return -1;
}
+ broken_entry = SMB_MALLOC_P(struct share_mode_entry_list);
+ if (!broken_entry) {
+ smb_panic("open_mode_check: malloc fail.\n");
+ }
+ broken_entry->entry = *share_entry;
+ DLIST_ADD(broken_entry_list, broken_entry);
broke_oplock = True;
- broken_entry = *share_entry;
- break;
} else if (!LEVEL_II_OPLOCK_TYPE(share_entry->op_type)) {
*p_all_current_opens_are_level_II = False;
}
-
+ } /* end for */
+
+ if (broke_oplock) {
+ /* Update the current open table. */
+ SAFE_FREE(old_shares);
+ num_share_modes = get_share_modes(conn, dev, inode, &old_shares);
+ }
+
+ /* Now we check the share modes, after any oplock breaks. */
+ for(i = 0; i < num_share_modes; i++) {
+ share_mode_entry *share_entry = &old_shares[i];
+
/* someone else has a share lock on it, check to see if we can too */
if (!check_share_mode(conn, share_entry, share_mode, desired_access,
fname, fcbopen, p_flags)) {
SAFE_FREE(old_shares);
+ free_broken_entry_list(broken_entry_list);
errno = EACCES;
return -1;
}
-
- } /* end for */
-
- if(broke_oplock) {
- SAFE_FREE(old_shares);
- num_share_modes = get_share_modes(conn, dev, inode, &old_shares);
+ }
+
+ for(broken_entry = broken_entry_list; broken_entry; broken_entry = broken_entry->next) {
oplock_contention_count++;
/* Paranoia check that this is no longer an exlusive entry. */
for(i = 0; i < num_share_modes; i++) {
share_mode_entry *share_entry = &old_shares[i];
- if (share_modes_identical(&broken_entry, share_entry) &&
- EXCLUSIVE_OPLOCK_TYPE(share_entry->op_type) ) {
+ if (share_modes_identical(&broken_entry->entry, share_entry) &&
+ EXCLUSIVE_OPLOCK_TYPE(share_entry->op_type) ) {
/*
* This should not happen. The target left this oplock
* as exlusive.... The process *must* be dead....
*/
- DEBUG(0,("open_mode_check: exlusive oplock left by process %d after break ! For file %s, \
-dev = %x, inode = %.0f. Deleting it to continue...\n", (int)broken_entry.pid, fname, (unsigned int)dev, (double)inode));
+ DEBUG(0,("open_mode_check: exlusive oplock left by process %d \
+after break ! For file %s, dev = %x, inode = %.0f. Deleting it to continue...\n",
+ (int)broken_entry->entry.pid, fname, (unsigned int)dev, (double)inode));
- if (process_exists(broken_entry.pid)) {
- DEBUG(0,("open_mode_check: Existent process %d left active oplock.\n",
- broken_entry.pid ));
+ if (process_exists(broken_entry->entry.pid)) {
+ DEBUG(0,("open_mode_check: Existent process %lu left active oplock.\n",
+ (unsigned long)broken_entry->entry.pid ));
}
- if (del_share_entry(dev, inode, &broken_entry, NULL) == -1) {
+ if (del_share_entry(dev, inode, &broken_entry->entry, NULL) == -1) {
+ free_broken_entry_list(broken_entry_list);
errno = EACCES;
unix_ERR_class = ERRDOS;
unix_ERR_code = ERRbadshare;
+ unix_ERR_ntstatus = NT_STATUS_SHARING_VIOLATION;
return -1;
}
break;
}
} /* end for paranoia... */
- } /* end if broke_oplock */
-
+ } /* end for broken_entry */
+ free_broken_entry_list(broken_entry_list);
} while(broke_oplock);
- if(old_shares != 0)
- SAFE_FREE(old_shares);
-
/*
* Refuse to grant an oplock in case the contention limit is
* reached when going through the lock list multiple times.
oplock_contention_count ));
}
+ SAFE_FREE(old_shares);
return num_share_modes;
}
/****************************************************************************
-set a kernel flock on a file for NFS interoperability
-this requires a patch to Linux
+ Delete the record for a handled deferred open entry.
****************************************************************************/
+
+static void delete_defered_open_entry_record(connection_struct *conn, SMB_DEV_T dev, SMB_INO_T inode)
+{
+ uint16 mid = get_current_mid();
+ pid_t mypid = sys_getpid();
+ deferred_open_entry *de_array = NULL;
+ int num_de_entries, i;
+
+ if (!lp_defer_sharing_violations()) {
+ return;
+ }
+
+ num_de_entries = get_deferred_opens(conn, dev, inode, &de_array);
+ for (i = 0; i < num_de_entries; i++) {
+ deferred_open_entry *entry = &de_array[i];
+ if (entry->pid == mypid && entry->mid == mid && entry->dev == dev &&
+ entry->inode == inode) {
+
+ /* Remove the deferred open entry from the array. */
+ delete_deferred_open_entry(entry);
+ SAFE_FREE(de_array);
+ return;
+ }
+ }
+ SAFE_FREE(de_array);
+}
+
+/****************************************************************************
+ Handle the 1 second delay in returning a SHARING_VIOLATION error.
+****************************************************************************/
+
+void defer_open_sharing_error(connection_struct *conn, struct timeval *ptv,
+ char *fname, SMB_DEV_T dev, SMB_INO_T inode)
+{
+ uint16 mid = get_current_mid();
+ pid_t mypid = sys_getpid();
+ deferred_open_entry *de_array = NULL;
+ int num_de_entries, i;
+ struct dev_inode_bundle dib;
+
+ if (!lp_defer_sharing_violations()) {
+ return;
+ }
+
+ dib.dev = dev;
+ dib.inode = inode;
+
+ num_de_entries = get_deferred_opens(conn, dev, inode, &de_array);
+ for (i = 0; i < num_de_entries; i++) {
+ deferred_open_entry *entry = &de_array[i];
+ if (entry->pid == mypid && entry->mid == mid) {
+ /*
+ * Check if a 1 second timeout has expired.
+ */
+ if (usec_time_diff(ptv, &entry->time) > SHARING_VIOLATION_USEC_WAIT) {
+ DEBUG(10,("defer_open_sharing_error: Deleting deferred open entry for mid %u, \
+file %s\n",
+ (unsigned int)mid, fname ));
+
+ /* Expired, return a real error. */
+ /* Remove the deferred open entry from the array. */
+
+ delete_deferred_open_entry(entry);
+ SAFE_FREE(de_array);
+ return;
+ }
+ /*
+ * If the timeout hasn't expired yet and we still have a sharing violation,
+ * just leave the entry in the deferred open array alone. We do need to
+ * reschedule this open call though (with the original created time).
+ */
+ DEBUG(10,("defer_open_sharing_error: time [%u.%06u] updating \
+deferred open entry for mid %u, file %s\n",
+ (unsigned int)entry->time.tv_sec,
+ (unsigned int)entry->time.tv_usec,
+ (unsigned int)mid, fname ));
+
+ push_sharing_violation_open_smb_message(&entry->time, (char *)&dib, sizeof(dib));
+ SAFE_FREE(de_array);
+ return;
+ }
+ }
+
+ DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred open entry for mid %u, file %s\n",
+ (unsigned int)ptv->tv_sec, (unsigned int)ptv->tv_usec, (unsigned int)mid, fname ));
+
+ if (!push_sharing_violation_open_smb_message(ptv, (char *)&dib, sizeof(dib))) {
+ SAFE_FREE(de_array);
+ return;
+ }
+ if (!add_deferred_open(mid, ptv, dev, inode, global_oplock_port, fname)) {
+ remove_sharing_violation_open_smb_message(mid);
+ }
+
+ /*
+ * Push the MID of this packet on the signing queue.
+ * We only do this once, the first time we push the packet
+ * onto the deferred open queue, as this has a side effect
+ * of incrementing the response sequence number.
+ */
+
+ srv_defer_sign_response(mid);
+
+ SAFE_FREE(de_array);
+}
+
+/****************************************************************************
+ Set a kernel flock on a file for NFS interoperability.
+ This requires a patch to Linux.
+****************************************************************************/
+
static void kernel_flock(files_struct *fsp, int deny_mode)
{
#if HAVE_KERNEL_SHARE_MODES
}
-static BOOL open_match_attributes(connection_struct *conn, char *path, mode_t existing_mode,
- mode_t new_mode, mode_t *returned_mode)
+static BOOL open_match_attributes(connection_struct *conn, const char *path, uint32 old_dos_mode, uint32 new_dos_mode,
+ mode_t existing_mode, mode_t new_mode, mode_t *returned_mode)
{
- uint32 old_dos_mode, new_dos_mode;
uint32 noarch_old_dos_mode, noarch_new_dos_mode;
- SMB_STRUCT_STAT sbuf;
-
- ZERO_STRUCT(sbuf);
-
- sbuf.st_mode = existing_mode;
- old_dos_mode = dos_mode(conn, path, &sbuf);
-
- sbuf.st_mode = new_mode;
- new_dos_mode = dos_mode(conn, path, &sbuf);
noarch_old_dos_mode = (old_dos_mode & ~FILE_ATTRIBUTE_ARCHIVE);
noarch_new_dos_mode = (new_dos_mode & ~FILE_ATTRIBUTE_ARCHIVE);
old_dos_mode, (unsigned int)existing_mode, new_dos_mode, (unsigned int)*returned_mode ));
/* If we're mapping SYSTEM and HIDDEN ensure they match. */
- if (lp_map_system(SNUM(conn))) {
+ if (lp_map_system(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
if ((old_dos_mode & FILE_ATTRIBUTE_SYSTEM) && !(new_dos_mode & FILE_ATTRIBUTE_SYSTEM))
return False;
}
- if (lp_map_hidden(SNUM(conn))) {
+ if (lp_map_hidden(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
if ((old_dos_mode & FILE_ATTRIBUTE_HIDDEN) && !(new_dos_mode & FILE_ATTRIBUTE_HIDDEN))
return False;
}
****************************************************************************/
files_struct *open_file_shared(connection_struct *conn,char *fname, SMB_STRUCT_STAT *psbuf,
- int share_mode,int ofun, mode_t mode,int oplock_request,
+ int share_mode,int ofun, uint32 new_dos_mode, int oplock_request,
int *Access,int *action)
{
- return open_file_shared1(conn, fname, psbuf, 0, share_mode, ofun, mode,
+ return open_file_shared1(conn, fname, psbuf, 0, share_mode, ofun, new_dos_mode,
oplock_request, Access, action);
}
files_struct *open_file_shared1(connection_struct *conn,char *fname, SMB_STRUCT_STAT *psbuf,
uint32 desired_access,
- int share_mode,int ofun, mode_t mode,int oplock_request,
- int *Access,int *action)
+ int share_mode,int ofun, uint32 new_dos_mode,
+ int oplock_request,
+ int *Access,int *paction)
{
int flags=0;
int flags2=0;
BOOL file_existed = VALID_STAT(*psbuf);
BOOL fcbopen = False;
BOOL def_acl = False;
+ BOOL add_share_mode = True;
+ BOOL internal_only_open = False;
SMB_DEV_T dev = 0;
SMB_INO_T inode = 0;
int num_share_modes = 0;
int open_mode=0;
uint16 port = 0;
mode_t new_mode = (mode_t)0;
+ int action;
+ uint32 existing_dos_mode = 0;
+ struct pending_message_list *pml = NULL;
+ uint16 mid = get_current_mid();
+ /* We add aARCH to this as this mode is only used if the file is created new. */
+ mode_t mode = unix_mode(conn,new_dos_mode | aARCH,fname, True);
+
+ if (oplock_request == INTERNAL_OPEN_ONLY) {
+ internal_only_open = True;
+ oplock_request = 0;
+ }
+
+ if ((pml = get_open_deferred_message(mid)) != NULL) {
+ struct dev_inode_bundle dib;
+
+ memcpy(&dib, pml->private_data.data, sizeof(dib));
+
+ /* There could be a race condition where the dev/inode pair
+ has changed since we deferred the message. If so, just
+ remove the deferred open entry and return sharing violation. */
+
+ /* If the timeout value is non-zero, we need to just
+ return sharing violation. Don't retry the open
+ as we were not notified of a close and we don't want to
+ trigger another spurious oplock break. */
+
+ if (!file_existed || dib.dev != psbuf->st_dev || dib.inode != psbuf->st_ino ||
+ pml->msg_time.tv_sec || pml->msg_time.tv_usec) {
+ /* Ensure we don't reprocess this message. */
+ remove_sharing_violation_open_smb_message(mid);
+
+ /* Now remove the deferred open entry under lock. */
+ lock_share_entry(conn, dib.dev, dib.inode);
+ delete_defered_open_entry_record(conn, dib.dev, dib.inode);
+ unlock_share_entry(conn, dib.dev, dib.inode);
+
+ unix_ERR_class = ERRDOS;
+ unix_ERR_code = ERRbadshare;
+ unix_ERR_ntstatus = NT_STATUS_SHARING_VIOLATION;
+ return NULL;
+ }
+ /* Ensure we don't reprocess this message. */
+ remove_sharing_violation_open_smb_message(mid);
+
+ }
if (conn->printer) {
/* printers are handled completely differently. Most of the passed parameters are
ignored */
if (Access)
*Access = DOS_OPEN_WRONLY;
- if (action)
- *action = FILE_WAS_CREATED;
+ if (paction)
+ *paction = FILE_WAS_CREATED;
return print_fsp_open(conn, fname);
}
if(!fsp)
return NULL;
- 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 ));
+ DEBUG(10,("open_file_shared: fname = %s, dos_attrs = %x, share_mode = %x, ofun = %x, mode = %o, oplock request = %d\n",
+ fname, new_dos_mode, share_mode, ofun, (int)mode, oplock_request ));
if (!check_name(fname,conn)) {
file_free(fsp);
return NULL;
}
+ new_dos_mode &= SAMBA_ATTRIBUTES_MASK;
+ if (file_existed) {
+ existing_dos_mode = dos_mode(conn, fname, psbuf);
+ }
+
/* ignore any oplock requests if oplocks are disabled */
if (!lp_oplocks(SNUM(conn)) || global_client_failed_oplock_break) {
oplock_request = 0;
DEBUG(5,("open_file_shared: create new requested for file %s and file already exists.\n",
fname ));
file_free(fsp);
- errno = EEXIST;
+ if (S_ISDIR(psbuf->st_mode)) {
+ errno = EISDIR;
+ } else {
+ errno = EEXIST;
+ }
return NULL;
}
/* We only care about matching attributes on file exists and truncate. */
if (file_existed && (GET_FILE_OPEN_DISPOSITION(ofun) == FILE_EXISTS_TRUNCATE)) {
- if (!open_match_attributes(conn, fname, psbuf->st_mode, mode, &new_mode)) {
- DEBUG(5,("open_file_shared: attributes missmatch for file %s (0%o, 0%o)\n",
- fname, psbuf->st_mode, mode ));
+ if (!open_match_attributes(conn, fname, existing_dos_mode, new_dos_mode,
+ psbuf->st_mode, mode, &new_mode)) {
+ DEBUG(5,("open_file_shared: attributes missmatch for file %s (%x %x) (0%o, 0%o)\n",
+ fname, existing_dos_mode, new_dos_mode,
+ (int)psbuf->st_mode, (int)mode ));
file_free(fsp);
errno = EACCES;
return NULL;
#endif /* O_SYNC */
if (flags != O_RDONLY && file_existed &&
- (!CAN_WRITE(conn) || IS_DOS_READONLY(dos_mode(conn,fname,psbuf)))) {
+ (!CAN_WRITE(conn) || IS_DOS_READONLY(existing_dos_mode))) {
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" ));
return NULL;
}
+ if (desired_access && ((desired_access & ~(SYNCHRONIZE_ACCESS|FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES))==0) &&
+ ((desired_access & (SYNCHRONIZE_ACCESS|FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES)) != 0)) {
+ /* Stat open that doesn't trigger oplock breaks or share mode checks... ! JRA. */
+ deny_mode = DENY_NONE;
+ if (file_existed) {
+ oplock_request = 0;
+ add_share_mode = False;
+ flags2 &= ~O_CREAT;
+ }
+ }
+
if (file_existed) {
dev = psbuf->st_dev;
* we can do. We also ensure we're not going to create or tuncate
* the file as we only want an access decision at this stage. JRA.
*/
+ errno = 0;
fsp_open = open_file(fsp,conn,fname,psbuf,
flags|(flags2&~(O_TRUNC|O_CREAT)),mode,desired_access);
flags=0x%X flags2=0x%X mode=0%o returned %d\n",
flags,(flags2&~(O_TRUNC|O_CREAT)),(int)mode,(int)fsp_open ));
+ if (!fsp_open && errno) {
+ unix_ERR_class = ERRDOS;
+ unix_ERR_code = ERRnoaccess;
+ unix_ERR_ntstatus = NT_STATUS_ACCESS_DENIED;
+ }
+
+ /*
+ * If we're returning a share violation, ensure we cope with
+ * the braindead 1 second delay.
+ */
+
+ if (!internal_only_open && NT_STATUS_EQUAL(unix_ERR_ntstatus,NT_STATUS_SHARING_VIOLATION)) {
+ /* The fsp->open_time here represents the current time of day. */
+ defer_open_sharing_error(conn, &fsp->open_time, fname, dev, inode);
+ }
+
unlock_share_entry(conn, dev, inode);
- if (fsp_open)
+ if (fsp_open) {
fd_close(conn, fsp);
+ /*
+ * We have detected a sharing violation here
+ * so return the correct error code
+ */
+ unix_ERR_class = ERRDOS;
+ unix_ERR_code = ERRbadshare;
+ unix_ERR_ntstatus = NT_STATUS_SHARING_VIOLATION;
+ }
file_free(fsp);
return NULL;
}
if (!file_existed) {
+ /*
+ * Now the file exists and fsp is successfully opened,
+ * fsp->dev and fsp->inode are valid and should replace the
+ * dev=0,inode=0 from a non existent file. Spotted by
+ * Nadav Danieli <nadavd@exanet.com>. JRA.
+ */
+
+ dev = fsp->dev;
+ inode = fsp->inode;
+
lock_share_entry_fsp(fsp);
num_share_modes = open_mode_check(conn, fname, dev, inode,
&flags, &oplock_request, &all_current_opens_are_level_II);
if(num_share_modes == -1) {
+ /*
+ * If we're returning a share violation, ensure we cope with
+ * the braindead 1 second delay.
+ */
+
+ if (!internal_only_open && NT_STATUS_EQUAL(unix_ERR_ntstatus,NT_STATUS_SHARING_VIOLATION)) {
+ /* The fsp->open_time here represents the current time of day. */
+ defer_open_sharing_error(conn, &fsp->open_time, fname, dev, inode);
+ }
+
unlock_share_entry_fsp(fsp);
fd_close(conn,fsp);
file_free(fsp);
+ /*
+ * We have detected a sharing violation here, so
+ * return the correct code.
+ */
+ unix_ERR_class = ERRDOS;
+ unix_ERR_code = ERRbadshare;
+ unix_ERR_ntstatus = NT_STATUS_SHARING_VIOLATION;
return NULL;
}
/*
* We are modifing the file after open - update the stat struct..
*/
- if ((truncate_unless_locked(conn,fsp) == -1) || (vfs_fstat(fsp,fsp->fd,psbuf)==-1)) {
+ if ((SMB_VFS_FTRUNCATE(fsp,fsp->fd,0) == -1) || (SMB_VFS_FSTAT(fsp,fsp->fd,psbuf)==-1)) {
unlock_share_entry_fsp(fsp);
fd_close(conn,fsp);
file_free(fsp);
DEBUG(10,("open_file_shared : share_mode = %x\n", fsp->share_mode ));
- if (Access)
+ if (Access) {
(*Access) = open_mode;
+ }
- if (action) {
- if (file_existed && !(flags2 & O_TRUNC))
- *action = FILE_WAS_OPENED;
- if (!file_existed)
- *action = FILE_WAS_CREATED;
- if (file_existed && (flags2 & O_TRUNC))
- *action = FILE_WAS_OVERWRITTEN;
+ action = 0;
+
+ if (file_existed && !(flags2 & O_TRUNC))
+ action = FILE_WAS_OPENED;
+ if (file_existed && (flags2 & O_TRUNC))
+ action = FILE_WAS_OVERWRITTEN;
+ if (!file_existed)
+ action = FILE_WAS_CREATED;
+
+ if (paction) {
+ *paction = action;
}
/*
oplock_request = 0;
}
- set_share_mode(fsp, port, oplock_request);
+ if (add_share_mode) {
+ set_share_mode(fsp, port, oplock_request);
+ }
if (delete_on_close) {
- NTSTATUS result = set_delete_on_close_internal(fsp, delete_on_close);
+ uint32 dosmode = existing_dos_mode;
+ NTSTATUS result;
+
+ if (action == FILE_WAS_OVERWRITTEN || action == FILE_WAS_CREATED) {
+ dosmode = new_dos_mode;
+ }
+ result = set_delete_on_close_internal(fsp, delete_on_close, dosmode);
if (NT_STATUS_V(result) != NT_STATUS_V(NT_STATUS_OK)) {
+ uint8 u_e_c;
+ uint32 u_e_code;
/* Remember to delete the mode we just added. */
- del_share_mode(fsp, NULL);
+ if (add_share_mode) {
+ del_share_mode(fsp, NULL);
+ }
unlock_share_entry_fsp(fsp);
fd_close(conn,fsp);
file_free(fsp);
+ ntstatus_to_dos(result, &u_e_c, &u_e_code);
+ unix_ERR_ntstatus = result;
+ unix_ERR_class = u_e_c;
+ unix_ERR_code = u_e_code;
return NULL;
}
}
+ if (action == FILE_WAS_OVERWRITTEN || action == FILE_WAS_CREATED) {
+ /* Files should be initially set as archive */
+ if (lp_map_archive(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
+ file_set_dosmode(conn, fname, new_dos_mode | aARCH, NULL, True);
+ }
+ }
+
/*
* Take care of inherited ACLs on created files - if default ACL not
* selected.
*/
- if (!file_existed && !def_acl && (conn->vfs_ops.fchmod_acl != NULL)) {
+ if (!file_existed && !def_acl) {
int saved_errno = errno; /* We might get ENOSYS in the next call.. */
- if (conn->vfs_ops.fchmod_acl(fsp, fsp->fd, mode) == -1 && errno == ENOSYS)
+ if (SMB_VFS_FCHMOD_ACL(fsp, fsp->fd, mode) == -1 && errno == ENOSYS)
errno = saved_errno; /* Ignore ENOSYS */
} else if (new_mode) {
/* Attributes need changing. File already existed. */
- if (conn->vfs_ops.fchmod_acl != NULL) {
+ {
int saved_errno = errno; /* We might get ENOSYS in the next call.. */
- ret = conn->vfs_ops.fchmod_acl(fsp, fsp->fd, new_mode);
+ ret = SMB_VFS_FCHMOD_ACL(fsp, fsp->fd, new_mode);
if (ret == -1 && errno == ENOSYS) {
errno = saved_errno; /* Ignore ENOSYS */
}
}
- if ((ret == -1) && (conn->vfs_ops.fchmod(fsp, fsp->fd, new_mode) == -1))
+ if ((ret == -1) && (SMB_VFS_FCHMOD(fsp, fsp->fd, new_mode) == -1))
DEBUG(5, ("open_file_shared: failed to reset attributes of file %s to 0%o\n",
fname, (int)new_mode));
}
+ /* If this is a successful open, we must remove any deferred open records. */
+ delete_defered_open_entry_record(conn, fsp->dev, fsp->inode);
unlock_share_entry_fsp(fsp);
conn->num_files_open++;
****************************************************************************/
files_struct *open_directory(connection_struct *conn, char *fname, SMB_STRUCT_STAT *psbuf,
- uint32 desired_access, int share_mode, int smb_ofun, mode_t unixmode, int *action)
+ uint32 desired_access, int share_mode, int smb_ofun, int *action)
{
extern struct current_user current_user;
BOOL got_stat = False;
if(!fsp)
return NULL;
- fsp->conn = conn; /* The vfs_fXXX() macros need this. */
-
if (VALID_STAT(*psbuf))
got_stat = True;
return NULL;
}
- if(vfs_mkdir(conn,fname, unix_mode(conn,aDIR, fname)) < 0) {
+ if (ms_has_wild(fname)) {
+ file_free(fsp);
+ DEBUG(5,("open_directory: failing create on filename %s with wildcards\n", fname));
+ unix_ERR_class = ERRDOS;
+ unix_ERR_code = ERRinvalidname;
+ unix_ERR_ntstatus = NT_STATUS_OBJECT_NAME_INVALID;
+ return NULL;
+ }
+
+ if( strchr_m(fname, ':')) {
+ file_free(fsp);
+ DEBUG(5,("open_directory: failing create on filename %s with colon in name\n", fname));
+ unix_ERR_class = ERRDOS;
+ unix_ERR_code = ERRinvalidname;
+ unix_ERR_ntstatus = NT_STATUS_NOT_A_DIRECTORY;
+ return NULL;
+ }
+
+ if(vfs_MkDir(conn,fname, unix_mode(conn,aDIR, fname, True)) < 0) {
DEBUG(2,("open_directory: unable to create %s. Error was %s\n",
fname, strerror(errno) ));
file_free(fsp);
return NULL;
}
- if(vfs_stat(conn,fname, psbuf) != 0) {
+ if(SMB_VFS_STAT(conn,fname, psbuf) != 0) {
file_free(fsp);
return NULL;
}
fsp->dev = psbuf->st_dev;
fsp->size = psbuf->st_size;
fsp->vuid = current_user.vuid;
- fsp->pos = -1;
+ fsp->file_pid = global_smbpid;
fsp->can_lock = True;
fsp->can_read = False;
fsp->can_write = False;
fsp->is_directory = True;
fsp->is_stat = False;
fsp->directory_delete_on_close = False;
- fsp->conn = conn;
string_set(&fsp->fsp_name,fname);
if (delete_on_close) {
- NTSTATUS result = set_delete_on_close_internal(fsp, delete_on_close);
+ NTSTATUS result = set_delete_on_close_internal(fsp, delete_on_close, 0);
if (NT_STATUS_V(result) != NT_STATUS_V(NT_STATUS_OK)) {
file_free(fsp);
if(!fsp)
return NULL;
- fsp->conn = conn; /* The vfs_fXXX() macros need this. */
-
DEBUG(5,("open_file_stat: 'opening' file %s\n", fname));
/*
*/
fsp->mode = psbuf->st_mode;
- /*
- * Don't store dev or inode, we don't want any iterator
- * to see this.
- */
- fsp->inode = (SMB_INO_T)0;
- fsp->dev = (SMB_DEV_T)0;
+ fsp->inode = psbuf->st_ino;
+ fsp->dev = psbuf->st_dev;
fsp->size = psbuf->st_size;
fsp->vuid = current_user.vuid;
- fsp->pos = -1;
+ fsp->file_pid = global_smbpid;
fsp->can_lock = False;
fsp->can_read = False;
fsp->can_write = False;
fsp->is_directory = False;
fsp->is_stat = True;
fsp->directory_delete_on_close = False;
- fsp->conn = conn;
string_set(&fsp->fsp_name,fname);
conn->num_files_open++;
git.samba.org / samba.git / blobdiff