#include "includes.h"
+extern struct generic_mapping file_generic_mapping;
extern struct current_user current_user;
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 {
+struct deferred_open_record {
+ BOOL delayed_for_oplocks;
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,
- const char *fname,
- int flags,
- mode_t mode)
+static NTSTATUS fd_open(struct connection_struct *conn,
+ const char *fname,
+ files_struct *fsp,
+ int flags,
+ mode_t mode)
{
- int fd;
+ NTSTATUS status = NT_STATUS_OK;
+
#ifdef O_NOFOLLOW
- if (!lp_symlinks(SNUM(conn))) {
+ /*
+ * Never follow symlinks on a POSIX client. The
+ * client should be doing this.
+ */
+
+ if (fsp->posix_open || !lp_symlinks(SNUM(conn))) {
flags |= O_NOFOLLOW;
}
#endif
- fd = SMB_VFS_OPEN(conn,fname,flags,mode);
+ fsp->fh->fd = SMB_VFS_OPEN(conn,fname,fsp,flags,mode);
+ if (fsp->fh->fd == -1) {
+ status = map_nt_error_from_unix(errno);
+ }
- 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) : "" ));
+ DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n",
+ fname, flags, (int)mode, fsp->fh->fd,
+ (fsp->fh->fd == -1) ? strerror(errno) : "" ));
- return fd;
+ return status;
}
/****************************************************************************
Close the file associated with a fsp.
****************************************************************************/
-int fd_close(struct connection_struct *conn,
- files_struct *fsp)
+NTSTATUS fd_close(struct connection_struct *conn, files_struct *fsp)
{
if (fsp->fh->fd == -1) {
- return 0; /* What we used to call a stat open. */
+ return NT_STATUS_OK; /* What we used to call a stat open. */
}
if (fsp->fh->ref_count > 1) {
- return 0; /* Shared handle. Only close last reference. */
+ return NT_STATUS_OK; /* Shared handle. Only close last reference. */
}
return fd_close_posix(conn, fsp);
}
-
-/****************************************************************************
- Check a filename for the pipe string.
-****************************************************************************/
-
-static void check_for_pipe(const char *fname)
-{
- /* special case of pipe opens */
- char s[10];
- StrnCpy(s,fname,sizeof(s)-1);
- strlower_m(s);
- if (strstr(s,"pipe/")) {
- DEBUG(3,("Rejecting named pipe open for %s\n",fname));
- set_saved_error_triple(ERRSRV, ERRaccess, NT_STATUS_ACCESS_DENIED);
- }
-}
-
/****************************************************************************
Change the ownership of a file to that of the parent directory.
Do this by fd if possible.
****************************************************************************/
-void change_owner_to_parent(connection_struct *conn,
- files_struct *fsp,
- const char *fname,
- SMB_STRUCT_STAT *psbuf)
+static void change_file_owner_to_parent(connection_struct *conn,
+ const char *inherit_from_dir,
+ files_struct *fsp)
{
- const char *parent_path = parent_dirname(fname);
SMB_STRUCT_STAT parent_st;
int ret;
- ret = SMB_VFS_STAT(conn, parent_path, &parent_st);
+ ret = SMB_VFS_STAT(conn, inherit_from_dir, &parent_st);
if (ret == -1) {
- DEBUG(0,("change_owner_to_parent: failed to stat parent "
+ DEBUG(0,("change_file_owner_to_parent: failed to stat parent "
"directory %s. Error was %s\n",
- parent_path, strerror(errno) ));
+ inherit_from_dir, strerror(errno) ));
return;
}
- if (fsp && fsp->fh->fd != -1) {
- become_root();
- ret = SMB_VFS_FCHOWN(fsp, fsp->fh->fd, parent_st.st_uid, (gid_t)-1);
- unbecome_root();
- if (ret == -1) {
- DEBUG(0,("change_owner_to_parent: failed to fchown "
- "file %s to parent directory uid %u. Error "
- "was %s\n", fname,
- (unsigned int)parent_st.st_uid,
- strerror(errno) ));
- }
+ become_root();
+ ret = SMB_VFS_FCHOWN(fsp, fsp->fh->fd, parent_st.st_uid, (gid_t)-1);
+ unbecome_root();
+ if (ret == -1) {
+ DEBUG(0,("change_file_owner_to_parent: failed to fchown "
+ "file %s to parent directory uid %u. Error "
+ "was %s\n", fsp->fsp_name,
+ (unsigned int)parent_st.st_uid,
+ strerror(errno) ));
+ }
- DEBUG(10,("change_owner_to_parent: changed new file %s to "
- "parent directory uid %u.\n", fname,
- (unsigned int)parent_st.st_uid ));
+ DEBUG(10,("change_file_owner_to_parent: changed new file %s to "
+ "parent directory uid %u.\n", fsp->fsp_name,
+ (unsigned int)parent_st.st_uid ));
+}
- } else {
- /* We've already done an lstat into psbuf, and we know it's a
- directory. If we can cd into the directory and the dev/ino
- are the same then we can safely chown without races as
- we're locking the directory in place by being in it. This
- should work on any UNIX (thanks tridge :-). JRA.
- */
-
- pstring saved_dir;
- SMB_STRUCT_STAT sbuf;
-
- if (!vfs_GetWd(conn,saved_dir)) {
- DEBUG(0,("change_owner_to_parent: failed to get "
- "current working directory\n"));
- return;
- }
+static void change_dir_owner_to_parent(connection_struct *conn,
+ const char *inherit_from_dir,
+ const char *fname,
+ SMB_STRUCT_STAT *psbuf)
+{
+ pstring saved_dir;
+ SMB_STRUCT_STAT sbuf;
+ SMB_STRUCT_STAT parent_st;
+ int ret;
- /* Chdir into the new path. */
- if (vfs_ChDir(conn, fname) == -1) {
- DEBUG(0,("change_owner_to_parent: failed to change "
- "current working directory to %s. Error "
- "was %s\n", fname, strerror(errno) ));
- goto out;
- }
+ ret = SMB_VFS_STAT(conn, inherit_from_dir, &parent_st);
+ if (ret == -1) {
+ DEBUG(0,("change_dir_owner_to_parent: failed to stat parent "
+ "directory %s. Error was %s\n",
+ inherit_from_dir, strerror(errno) ));
+ return;
+ }
- if (SMB_VFS_STAT(conn,".",&sbuf) == -1) {
- DEBUG(0,("change_owner_to_parent: failed to stat "
- "directory '.' (%s) Error was %s\n",
- fname, strerror(errno)));
- goto out;
- }
+ /* We've already done an lstat into psbuf, and we know it's a
+ directory. If we can cd into the directory and the dev/ino
+ are the same then we can safely chown without races as
+ we're locking the directory in place by being in it. This
+ should work on any UNIX (thanks tridge :-). JRA.
+ */
- /* Ensure we're pointing at the same place. */
- if (sbuf.st_dev != psbuf->st_dev ||
- sbuf.st_ino != psbuf->st_ino ||
- sbuf.st_mode != psbuf->st_mode ) {
- DEBUG(0,("change_owner_to_parent: "
- "device/inode/mode on directory %s changed. "
- "Refusing to chown !\n", fname ));
- goto out;
- }
+ if (!vfs_GetWd(conn,saved_dir)) {
+ DEBUG(0,("change_dir_owner_to_parent: failed to get "
+ "current working directory\n"));
+ return;
+ }
- become_root();
- ret = SMB_VFS_CHOWN(conn, ".", parent_st.st_uid, (gid_t)-1);
- unbecome_root();
- if (ret == -1) {
- DEBUG(10,("change_owner_to_parent: failed to chown "
- "directory %s to parent directory uid %u. "
- "Error was %s\n", fname,
- (unsigned int)parent_st.st_uid, strerror(errno) ));
- goto out;
- }
+ /* Chdir into the new path. */
+ if (vfs_ChDir(conn, fname) == -1) {
+ DEBUG(0,("change_dir_owner_to_parent: failed to change "
+ "current working directory to %s. Error "
+ "was %s\n", fname, strerror(errno) ));
+ goto out;
+ }
- DEBUG(10,("change_owner_to_parent: changed ownership of new "
- "directory %s to parent directory uid %u.\n",
- fname, (unsigned int)parent_st.st_uid ));
+ if (SMB_VFS_STAT(conn,".",&sbuf) == -1) {
+ DEBUG(0,("change_dir_owner_to_parent: failed to stat "
+ "directory '.' (%s) Error was %s\n",
+ fname, strerror(errno)));
+ goto out;
+ }
- out:
+ /* Ensure we're pointing at the same place. */
+ if (sbuf.st_dev != psbuf->st_dev ||
+ sbuf.st_ino != psbuf->st_ino ||
+ sbuf.st_mode != psbuf->st_mode ) {
+ DEBUG(0,("change_dir_owner_to_parent: "
+ "device/inode/mode on directory %s changed. "
+ "Refusing to chown !\n", fname ));
+ goto out;
+ }
- vfs_ChDir(conn,saved_dir);
+ become_root();
+ ret = SMB_VFS_CHOWN(conn, ".", parent_st.st_uid, (gid_t)-1);
+ unbecome_root();
+ if (ret == -1) {
+ DEBUG(10,("change_dir_owner_to_parent: failed to chown "
+ "directory %s to parent directory uid %u. "
+ "Error was %s\n", fname,
+ (unsigned int)parent_st.st_uid, strerror(errno) ));
+ goto out;
}
+
+ DEBUG(10,("change_dir_owner_to_parent: changed ownership of new "
+ "directory %s to parent directory uid %u.\n",
+ fname, (unsigned int)parent_st.st_uid ));
+
+ out:
+
+ vfs_ChDir(conn,saved_dir);
}
/****************************************************************************
Open a file.
****************************************************************************/
-static BOOL open_file(files_struct *fsp,
- connection_struct *conn,
- const char *fname,
- SMB_STRUCT_STAT *psbuf,
- int flags,
- mode_t unx_mode,
- uint32 access_mask)
+static NTSTATUS open_file(files_struct *fsp,
+ connection_struct *conn,
+ const char *parent_dir,
+ const char *name,
+ const char *path,
+ SMB_STRUCT_STAT *psbuf,
+ int flags,
+ mode_t unx_mode,
+ uint32 access_mask, /* client requested access mask. */
+ uint32 open_access_mask) /* what we're actually using in the open. */
{
+ NTSTATUS status = NT_STATUS_OK;
int accmode = (flags & O_ACCMODE);
int local_flags = flags;
BOOL file_existed = VALID_STAT(*psbuf);
fsp->fh->fd = -1;
- fsp->oplock_type = NO_OPLOCK;
errno = EPERM;
/* Check permissions */
if (!CAN_WRITE(conn)) {
/* It's a read-only share - fail if we wanted to write. */
if(accmode != O_RDONLY) {
- DEBUG(3,("Permission denied opening %s\n",fname));
- check_for_pipe(fname);
- return False;
+ DEBUG(3,("Permission denied opening %s\n", path));
+ return NT_STATUS_ACCESS_DENIED;
} else if(flags & O_CREAT) {
/* We don't want to write - but we must make sure that
O_CREAT doesn't create the file if we have write
if ((accmode == O_RDONLY) && ((flags & O_TRUNC) == O_TRUNC)) {
DEBUG(10,("open_file: truncate requested on read-only open "
- "for file %s\n",fname ));
+ "for file %s\n", path));
local_flags = (flags & ~O_ACCMODE)|O_RDWR;
}
- if ((access_mask & (FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_EXECUTE)) ||
- (local_flags & O_CREAT) ||
+ if ((open_access_mask & (FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_EXECUTE)) ||
+ (!file_existed && (local_flags & O_CREAT)) ||
((local_flags & O_TRUNC) == O_TRUNC) ) {
/*
* We can't actually truncate here as the file may be locked.
- * open_file_shared will take care of the truncate later. JRA.
+ * open_file_ntcreate will take care of the truncate later. JRA.
*/
local_flags &= ~O_TRUNC;
/* Don't create files with Microsoft wildcard characters. */
if ((local_flags & O_CREAT) && !file_existed &&
- ms_has_wild(fname)) {
- set_saved_error_triple(ERRDOS, ERRinvalidname,
- NT_STATUS_OBJECT_NAME_INVALID);
- return False;
+ ms_has_wild(path)) {
+ return NT_STATUS_OBJECT_NAME_INVALID;
}
/* Actually do the open */
- fsp->fh->fd = fd_open(conn, fname, local_flags, unx_mode);
- if (fsp->fh->fd == -1) {
+ status = fd_open(conn, path, fsp, local_flags, unx_mode);
+ if (!NT_STATUS_IS_OK(status)) {
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;
+ path,nt_errstr(status),local_flags,flags));
+ return status;
}
- /* Inherit the ACL if the file was created. */
if ((local_flags & O_CREAT) && !file_existed) {
- inherit_access_acl(conn, fname, unx_mode);
+
+ /* Inherit the ACL if required */
+ if (lp_inherit_perms(SNUM(conn))) {
+ inherit_access_acl(conn, parent_dir, path,
+ unx_mode);
+ }
+
+ /* Change the owner if required. */
+ if (lp_inherit_owner(SNUM(conn))) {
+ change_file_owner_to_parent(conn, parent_dir,
+ fsp);
+ }
+
+ notify_fname(conn, NOTIFY_ACTION_ADDED,
+ FILE_NOTIFY_CHANGE_FILE_NAME, path);
}
} else {
int ret;
if (fsp->fh->fd == -1) {
- ret = SMB_VFS_STAT(conn, fname, psbuf);
+ ret = SMB_VFS_STAT(conn, path, psbuf);
} else {
ret = SMB_VFS_FSTAT(fsp,fsp->fh->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) ));
+ "(%s)\n", path,strerror(errno) ));
}
}
/* For a non-io open, this stat failing means file not found. JRA */
if (ret == -1) {
+ status = map_nt_error_from_unix(errno);
fd_close(conn, fsp);
- return False;
+ return status;
}
}
if(S_ISDIR(psbuf->st_mode)) {
fd_close(conn, fsp);
errno = EISDIR;
- return False;
+ return NT_STATUS_FILE_IS_A_DIRECTORY;
}
fsp->mode = psbuf->st_mode;
if (!CAN_WRITE(conn)) {
fsp->can_write = False;
} else {
- fsp->can_write = (access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ? True : False;
+ fsp->can_write = (access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ?
+ True : False;
}
fsp->print_file = False;
fsp->modified = False;
- fsp->oplock_type = NO_OPLOCK;
fsp->sent_oplock_break = NO_BREAK_SENT;
fsp->is_directory = False;
fsp->is_stat = False;
- if (conn->aio_write_behind_list &&
- is_in_path(fname, conn->aio_write_behind_list, conn->case_sensitive)) {
- fsp->aio_write_behind = True;
- }
- string_set(&fsp->fsp_name,fname);
+ string_set(&fsp->fsp_name, path);
fsp->wcp = NULL; /* Write cache pointer. */
DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
- *current_user_info.smb_name ? current_user_info.smb_name : conn->user,fsp->fsp_name,
+ *current_user_info.smb_name ?
+ current_user_info.smb_name : conn->user,fsp->fsp_name,
BOOLSTR(fsp->can_read), BOOLSTR(fsp->can_write),
conn->num_files_open + 1));
errno = 0;
- return True;
+ return NT_STATUS_OK;
}
/*******************************************************************
Returns True if conflict, False if not.
****************************************************************************/
-static BOOL share_conflict(share_mode_entry *entry,
+static BOOL share_conflict(struct share_mode_entry *entry,
uint32 access_mask,
uint32 share_access)
{
DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
(unsigned int)(share) )); \
- set_saved_error_triple(ERRDOS, ERRbadshare, NT_STATUS_SHARING_VIOLATION); \
return True; \
}
#else
DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
(unsigned int)(share) )); \
- set_saved_error_triple(ERRDOS, ERRbadshare, NT_STATUS_SHARING_VIOLATION); \
return True; \
}
#endif
#if defined(DEVELOPER)
static void validate_my_share_entries(int num,
- share_mode_entry *share_entry)
+ struct share_mode_entry *share_entry)
{
files_struct *fsp;
- if (share_entry->pid != sys_getpid()) {
+ if (!procid_is_me(&share_entry->pid)) {
+ return;
+ }
+
+ if (is_deferred_open_entry(share_entry) &&
+ !open_was_deferred(share_entry->op_mid)) {
+ pstring str;
+ pstr_sprintf(str, "Got a deferred entry without a request: "
+ "PANIC: %s\n", share_mode_str(num, share_entry));
+ smb_panic(str);
+ }
+
+ if (!is_valid_share_mode_entry(share_entry)) {
return;
}
"share entry with an open file\n");
}
+ if (is_deferred_open_entry(share_entry) ||
+ is_unused_share_mode_entry(share_entry)) {
+ goto panic;
+ }
+
+ if ((share_entry->op_type == NO_OPLOCK) &&
+ (fsp->oplock_type == FAKE_LEVEL_II_OPLOCK)) {
+ /* Someone has already written to it, but I haven't yet
+ * noticed */
+ return;
+ }
+
if (((uint16)fsp->oplock_type) != share_entry->op_type) {
+ goto panic;
+ }
+
+ return;
+
+ panic:
+ {
pstring str;
DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
share_mode_str(num, share_entry) ));
}
#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)
+static BOOL is_stat_open(uint32 access_mask)
{
- 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);
- }
-}
-
-static BOOL cause_oplock_break(int request, int existing, uint32 access_mask)
-{
- if ((access_mask == DELETE_ACCESS) &&
- (request == NO_OPLOCK)) {
- /* This is a delete request */
- return (BATCH_OPLOCK_TYPE(existing) != 0);
- }
-
- if (EXCLUSIVE_OPLOCK_TYPE(existing) && (request != NO_OPLOCK)) {
- return True;
- }
-
- if ((existing != NO_OPLOCK) && (request == NO_OPLOCK)) {
- return True;
- }
-
- return False;
+ return (access_mask &&
+ ((access_mask & ~(SYNCHRONIZE_ACCESS| FILE_READ_ATTRIBUTES|
+ FILE_WRITE_ATTRIBUTES))==0) &&
+ ((access_mask & (SYNCHRONIZE_ACCESS|FILE_READ_ATTRIBUTES|
+ FILE_WRITE_ATTRIBUTES)) != 0));
}
/****************************************************************************
- Deal with open deny mode and oplock break processing.
+ Deal with share modes
Invarient: Share mode must be locked on entry and exit.
Returns -1 on error, or number of share modes on success (may be zero).
****************************************************************************/
-static int open_mode_check(connection_struct *conn,
- const char *fname,
- SMB_DEV_T dev,
- SMB_INO_T inode,
- uint32 access_mask,
- uint32 share_access,
- uint32 create_options,
- int *p_flags,
- int *p_oplock_request,
- BOOL *p_all_current_opens_are_level_II)
+static NTSTATUS open_mode_check(connection_struct *conn,
+ const char *fname,
+ struct share_mode_lock *lck,
+ uint32 access_mask,
+ uint32 share_access,
+ uint32 create_options,
+ BOOL *file_existed)
{
int i;
- int num_share_modes;
- int oplock_contention_count = 0;
- share_mode_entry *old_shares = NULL;
- BOOL broke_oplock;
- BOOL delete_on_close;
- num_share_modes = get_share_modes(dev, inode, &old_shares, &delete_on_close);
-
- if(num_share_modes == 0) {
- SAFE_FREE(old_shares);
- return 0;
+ if(lck->num_share_modes == 0) {
+ return NT_STATUS_OK;
}
+
+ *file_existed = True;
- if (access_mask &&
- ((access_mask & ~(SYNCHRONIZE_ACCESS| FILE_READ_ATTRIBUTES|
- FILE_WRITE_ATTRIBUTES))==0) &&
- ((access_mask & (SYNCHRONIZE_ACCESS|FILE_READ_ATTRIBUTES|
- FILE_WRITE_ATTRIBUTES)) != 0)) {
+ if (is_stat_open(access_mask)) {
/* Stat open that doesn't trigger oplock breaks or share mode
* checks... ! JRA. */
- SAFE_FREE(old_shares);
- return num_share_modes;
+ return NT_STATUS_OK;
}
/* A delete on close prohibits everything */
- if (delete_on_close) {
- SAFE_FREE(old_shares);
- errno = EACCES;
- return -1;
+ if (lck->delete_on_close) {
+ return NT_STATUS_DELETE_PENDING;
}
/*
* Check if the share modes will give us access.
*/
- do {
- 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++) {
- share_mode_entry *share_entry = &old_shares[i];
- BOOL opb_ret;
-
#if defined(DEVELOPER)
- validate_my_share_entries(i, share_entry);
+ for(i = 0; i < lck->num_share_modes; i++) {
+ validate_my_share_entries(i, &lck->share_modes[i]);
+ }
#endif
- /*
- * By observation of NetBench, oplocks are broken
- * *before* share modes are checked. This allows a
- * file to be closed by the client if the share mode
- * would deny access and the client has an oplock.
- * Check if someone has an oplock on this file. If so
- * we must break it before continuing.
- */
+ if (!lp_share_modes(SNUM(conn))) {
+ return NT_STATUS_OK;
+ }
- if (!cause_oplock_break(*p_oplock_request,
- share_entry->op_type,
- access_mask)) {
- if (!LEVEL_II_OPLOCK_TYPE(share_entry->op_type)) {
- *p_all_current_opens_are_level_II = False;
- }
- continue;
- }
+ /* Now we check the share modes, after any oplock breaks. */
+ for(i = 0; i < lck->num_share_modes; i++) {
- /* This is an oplock break */
+ if (!is_valid_share_mode_entry(&lck->share_modes[i])) {
+ continue;
+ }
- 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());
+ /* someone else has a share lock on it, check to see if we can
+ * too */
+ if (share_conflict(&lck->share_modes[i],
+ access_mask, share_access)) {
+ return NT_STATUS_SHARING_VIOLATION;
+ }
+ }
+
+ return NT_STATUS_OK;
+}
- /* Oplock break - unlock to request it. */
- unlock_share_entry(conn, dev, inode);
-
- opb_ret = request_oplock_break(share_entry);
-
- /* Now relock. */
- lock_share_entry(conn, dev, inode);
-
- if (!opb_ret) {
- DEBUG(0,("open_mode_check: FAILED when breaking "
- "oplock (%x) on file %s, dev = %x, "
- "inode = %.0f\n",
- old_shares[i].op_type, fname,
- (unsigned int)dev, (double)inode));
- SAFE_FREE(old_shares);
- set_saved_error_triple(ERRDOS, ERRbadshare,
- NT_STATUS_SHARING_VIOLATION);
- return -1;
+static BOOL is_delete_request(files_struct *fsp) {
+ return ((fsp->access_mask == DELETE_ACCESS) &&
+ (fsp->oplock_type == NO_OPLOCK));
+}
+
+/*
+ * 1) No files open at all or internal open: Grant whatever the client wants.
+ *
+ * 2) Exclusive (or batch) oplock around: If the requested access is a delete
+ * request, break if the oplock around is a batch oplock. If it's another
+ * requested access type, break.
+ *
+ * 3) Only level2 around: Grant level2 and do nothing else.
+ */
+
+static BOOL delay_for_oplocks(struct share_mode_lock *lck,
+ files_struct *fsp,
+ int pass_number,
+ int oplock_request)
+{
+ int i;
+ struct share_mode_entry *exclusive = NULL;
+ BOOL valid_entry = False;
+ BOOL delay_it = False;
+ BOOL have_level2 = False;
+ NTSTATUS status;
+ char msg[MSG_SMB_SHARE_MODE_ENTRY_SIZE];
+
+ if (oplock_request & INTERNAL_OPEN_ONLY) {
+ fsp->oplock_type = NO_OPLOCK;
+ }
+
+ if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
+ return False;
+ }
+
+ for (i=0; i<lck->num_share_modes; i++) {
+
+ if (!is_valid_share_mode_entry(&lck->share_modes[i])) {
+ continue;
+ }
+
+ /* At least one entry is not an invalid or deferred entry. */
+ valid_entry = True;
+
+ if (pass_number == 1) {
+ if (BATCH_OPLOCK_TYPE(lck->share_modes[i].op_type)) {
+ SMB_ASSERT(exclusive == NULL);
+ exclusive = &lck->share_modes[i];
}
-
- broken_entry = SMB_MALLOC_P(struct share_mode_entry_list);
- if (!broken_entry) {
- smb_panic("open_mode_check: malloc fail.\n");
+ } else {
+ if (EXCLUSIVE_OPLOCK_TYPE(lck->share_modes[i].op_type)) {
+ SMB_ASSERT(exclusive == NULL);
+ exclusive = &lck->share_modes[i];
}
- broken_entry->entry = *share_entry;
- DLIST_ADD(broken_entry_list, broken_entry);
- broke_oplock = True;
-
- } /* end for */
-
- if (broke_oplock) {
- /* Update the current open table. */
- SAFE_FREE(old_shares);
- num_share_modes = get_share_modes(dev, inode,
- &old_shares,
- &delete_on_close);
}
- if (lp_share_modes(SNUM(conn))) {
- /* 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 (share_conflict(share_entry, access_mask,
- share_access)) {
- SAFE_FREE(old_shares);
- free_broken_entry_list(broken_entry_list);
- errno = EACCES;
- return -1;
- }
- }
+ if (lck->share_modes[i].op_type == LEVEL_II_OPLOCK) {
+ SMB_ASSERT(exclusive == NULL);
+ have_level2 = True;
}
+ }
- 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->entry,
- share_entry) &&
- EXCLUSIVE_OPLOCK_TYPE(share_entry->op_type))) {
- continue;
- }
-
- /*
- * 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->entry.pid, fname,
- (unsigned int)dev, (double)inode));
-
- 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->entry,
- NULL, &delete_on_close) == -1) {
- free_broken_entry_list(broken_entry_list);
- errno = EACCES;
- set_saved_error_triple(ERRDOS, ERRbadshare,
- NT_STATUS_SHARING_VIOLATION);
- return -1;
- }
-
- /*
- * We must reload the share modes after deleting the
- * other process's entry.
- */
-
- SAFE_FREE(old_shares);
- num_share_modes = get_share_modes(dev, inode,
- &old_shares,
- &delete_on_close);
- break;
- } /* end for paranoia... */
- } /* end for broken_entry */
- free_broken_entry_list(broken_entry_list);
- } while(broke_oplock);
-
- /*
- * Refuse to grant an oplock in case the contention limit is
- * reached when going through the lock list multiple times.
- */
-
- if(oplock_contention_count >= lp_oplock_contention_limit(SNUM(conn))) {
- *p_oplock_request = 0;
- DEBUG(4,("open_mode_check: oplock contention = %d. Not granting oplock.\n",
- oplock_contention_count ));
+ if (!valid_entry) {
+ /* All entries are placeholders or deferred.
+ * Directly grant whatever the client wants. */
+ if (fsp->oplock_type == NO_OPLOCK) {
+ /* Store a level2 oplock, but don't tell the client */
+ fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
+ }
+ return False;
}
-
- SAFE_FREE(old_shares);
- return num_share_modes;
-}
-/****************************************************************************
- Delete the record for a handled deferred open entry.
-****************************************************************************/
+ if (exclusive != NULL) { /* Found an exclusive oplock */
+ SMB_ASSERT(!have_level2);
+ delay_it = is_delete_request(fsp) ?
+ BATCH_OPLOCK_TYPE(exclusive->op_type) : True;
+ }
-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 (EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
+ /* We can at most grant level2 as there are other
+ * level2 or NO_OPLOCK entries. */
+ fsp->oplock_type = LEVEL_II_OPLOCK;
+ }
- if (!lp_defer_sharing_violations()) {
- return;
+ if ((fsp->oplock_type == NO_OPLOCK) && have_level2) {
+ /* Store a level2 oplock, but don't tell the client */
+ fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
}
- 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) {
+ if (!delay_it) {
+ return False;
+ }
- /* Remove the deferred open entry from the array. */
- delete_deferred_open_entry(entry);
- SAFE_FREE(de_array);
- return;
- }
+ /*
+ * Send a break message to the oplock holder and delay the open for
+ * our client.
+ */
+
+ DEBUG(10, ("Sending break request to PID %s\n",
+ procid_str_static(&exclusive->pid)));
+ exclusive->op_mid = get_current_mid();
+
+ /* Create the message. */
+ share_mode_entry_to_message(msg, exclusive);
+
+ /* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We
+ don't want this set in the share mode struct pointed to by lck. */
+
+ if (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE) {
+ SSVAL(msg,6,exclusive->op_type | FORCE_OPLOCK_BREAK_TO_NONE);
+ }
+
+ status = messaging_send_buf(smbd_messaging_context(), exclusive->pid,
+ MSG_SMB_BREAK_REQUEST,
+ (uint8 *)msg,
+ MSG_SMB_SHARE_MODE_ENTRY_SIZE);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(3, ("Could not send oplock break message: %s\n",
+ nt_errstr(status)));
}
- SAFE_FREE(de_array);
+
+ return True;
+}
+
+static BOOL request_timed_out(struct timeval request_time,
+ struct timeval timeout)
+{
+ struct timeval now, end_time;
+ GetTimeOfDay(&now);
+ end_time = timeval_sum(&request_time, &timeout);
+ return (timeval_compare(&end_time, &now) < 0);
}
/****************************************************************************
Handle the 1 second delay in returning a SHARING_VIOLATION error.
****************************************************************************/
-static void defer_open_sharing_error(connection_struct *conn,
- struct timeval *ptv,
- const char *fname,
- SMB_DEV_T dev,
- SMB_INO_T inode)
+static void defer_open(struct share_mode_lock *lck,
+ struct timeval request_time,
+ struct timeval timeout,
+ struct deferred_open_record *state)
{
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;
+ int i;
- if (!lp_defer_sharing_violations()) {
- return;
- }
+ /* Paranoia check */
- dib.dev = dev;
- dib.inode = inode;
+ for (i=0; i<lck->num_share_modes; i++) {
+ struct share_mode_entry *e = &lck->share_modes[i];
- 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;
+ if (!is_deferred_open_entry(e)) {
+ continue;
+ }
+
+ if (procid_is_me(&e->pid) && (e->op_mid == mid)) {
+ DEBUG(0, ("Trying to defer an already deferred "
+ "request: mid=%d, exiting\n", mid));
+ exit_server("attempt to defer a deferred request");
}
}
+ /* End paranoia check */
+
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 ));
+ "open entry for mid %u\n",
+ (unsigned int)request_time.tv_sec,
+ (unsigned int)request_time.tv_usec,
+ (unsigned int)mid));
- 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);
+ if (!push_deferred_smb_message(mid, request_time, timeout,
+ (char *)state, sizeof(*state))) {
+ exit_server("push_deferred_smb_message failed");
}
+ add_deferred_open(lck, mid, request_time, state->dev, state->inode);
/*
* Push the MID of this packet on the signing queue.
*/
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, uint32 share_mode)
-{
-#if HAVE_KERNEL_SHARE_MODES
- int kernel_mode = 0;
- if (share_mode == FILE_SHARE_WRITE) {
- kernel_mode = LOCK_MAND|LOCK_WRITE;
- } else if (share_mode == FILE_SHARE_READ) {
- kernel_mode = LOCK_MAND|LOCK_READ;
- } else if (share_mode == FILE_SHARE_NONE) {
- kernel_mode = LOCK_MAND;
- }
- if (kernel_mode) {
- flock(fsp->fh->fd, kernel_mode);
- }
-#endif
- ;
-}
/****************************************************************************
On overwrite open ensure that the attributes match.
****************************************************************************/
static BOOL open_match_attributes(connection_struct *conn,
- const char *path,
- uint32 old_dos_attr,
- uint32 new_dos_attr,
- mode_t existing_unx_mode,
- mode_t new_unx_mode,
- mode_t *returned_unx_mode)
+ const char *path,
+ uint32 old_dos_attr,
+ uint32 new_dos_attr,
+ mode_t existing_unx_mode,
+ mode_t new_unx_mode,
+ mode_t *returned_unx_mode)
{
uint32 noarch_old_dos_attr, noarch_new_dos_attr;
}
/* We need to duplicate this fsp. */
- dup_fsp = dup_file_fsp(fsp, access_mask, share_access, create_options);
- if (!dup_fsp) {
+ if (!NT_STATUS_IS_OK(dup_file_fsp(fsp, access_mask, share_access,
+ create_options, &dup_fsp))) {
return NULL;
}
****************************************************************************/
BOOL map_open_params_to_ntcreate(const char *fname, int deny_mode, int open_func,
- uint32 *paccess_mask,
- uint32 *pshare_mode,
- uint32 *pcreate_disposition,
- uint32 *pcreate_options)
+ uint32 *paccess_mask,
+ uint32 *pshare_mode,
+ uint32 *pcreate_disposition,
+ uint32 *pcreate_options)
{
uint32 access_mask;
uint32 share_mode;
/* Create the NT compatible access_mask. */
switch (GET_OPENX_MODE(deny_mode)) {
+ case DOS_OPEN_EXEC: /* Implies read-only - used to be FILE_READ_DATA */
case DOS_OPEN_RDONLY:
access_mask = FILE_GENERIC_READ;
break;
case DOS_OPEN_WRONLY:
access_mask = FILE_GENERIC_WRITE;
break;
- case DOS_OPEN_EXEC: /* This used to be FILE_READ_DATA... */
case DOS_OPEN_RDWR:
case DOS_OPEN_FCB:
access_mask = FILE_GENERIC_READ|FILE_GENERIC_WRITE;
}
-/* Map generic permissions to file object specific permissions */
-
-struct generic_mapping file_generic_mapping = {
- FILE_GENERIC_READ,
- FILE_GENERIC_WRITE,
- FILE_GENERIC_EXECUTE,
- FILE_GENERIC_ALL
-};
+static void schedule_defer_open(struct share_mode_lock *lck, struct timeval request_time)
+{
+ struct deferred_open_record state;
+
+ /* This is a relative time, added to the absolute
+ request_time value to get the absolute timeout time.
+ Note that if this is the second or greater time we enter
+ this codepath for this particular request mid then
+ request_time is left as the absolute time of the *first*
+ time this request mid was processed. This is what allows
+ the request to eventually time out. */
+
+ struct timeval timeout;
+
+ /* Normally the smbd we asked should respond within
+ * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
+ * the client did, give twice the timeout as a safety
+ * measure here in case the other smbd is stuck
+ * somewhere else. */
+
+ timeout = timeval_set(OPLOCK_BREAK_TIMEOUT*2, 0);
+
+ /* Nothing actually uses state.delayed_for_oplocks
+ but it's handy to differentiate in debug messages
+ between a 30 second delay due to oplock break, and
+ a 1 second delay for share mode conflicts. */
+
+ state.delayed_for_oplocks = True;
+ state.dev = lck->dev;
+ state.inode = lck->ino;
+
+ if (!request_timed_out(request_time, timeout)) {
+ defer_open(lck, request_time, timeout, &state);
+ }
+}
/****************************************************************************
Open a file with a share mode.
****************************************************************************/
-files_struct *open_file_ntcreate(connection_struct *conn,
- const char *fname,
- SMB_STRUCT_STAT *psbuf,
- uint32 access_mask, /* access bits (FILE_READ_DATA etc.) */
- uint32 share_access, /* share constants (FILE_SHARE_READ etc). */
- uint32 create_disposition, /* FILE_OPEN_IF etc. */
- uint32 create_options, /* options such as delete on close. */
- uint32 new_dos_attributes, /* attributes used for new file. */
- int oplock_request, /* internal Samba oplock codes. */
- /* Information (FILE_EXISTS etc.) */
- int *pinfo)
+NTSTATUS open_file_ntcreate(connection_struct *conn,
+ const char *fname,
+ SMB_STRUCT_STAT *psbuf,
+ uint32 access_mask, /* access bits (FILE_READ_DATA etc.) */
+ uint32 share_access, /* share constants (FILE_SHARE_READ etc) */
+ uint32 create_disposition, /* FILE_OPEN_IF etc. */
+ uint32 create_options, /* options such as delete on close. */
+ uint32 new_dos_attributes, /* attributes used for new file. */
+ int oplock_request, /* internal Samba oplock codes. */
+ /* Information (FILE_EXISTS etc.) */
+ int *pinfo,
+ files_struct **result)
{
int flags=0;
int flags2=0;
BOOL file_existed = VALID_STAT(*psbuf);
BOOL def_acl = False;
- BOOL internal_only_open = False;
+ BOOL posix_open = False;
+ BOOL new_file_created = False;
SMB_DEV_T dev = 0;
SMB_INO_T inode = 0;
- int num_share_modes = 0;
- BOOL all_current_opens_are_level_II = False;
- BOOL fsp_open = False;
+ NTSTATUS fsp_open = NT_STATUS_ACCESS_DENIED;
files_struct *fsp = NULL;
mode_t new_unx_mode = (mode_t)0;
mode_t unx_mode = (mode_t)0;
int info;
uint32 existing_dos_attributes = 0;
struct pending_message_list *pml = NULL;
- uint16 port = 0;
uint16 mid = get_current_mid();
+ struct timeval request_time = timeval_zero();
+ struct share_mode_lock *lck = NULL;
+ uint32 open_access_mask = access_mask;
+ NTSTATUS status;
+ int ret_flock;
+ char *parent_dir;
+ const char *newname;
if (conn->printer) {
/*
DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n", fname));
- return print_fsp_open(conn, fname);
+ return print_fsp_open(conn, fname, result);
}
- /* We add aARCH to this as this mode is only used if the file is
- * created new. */
- unx_mode = unix_mode(conn, new_dos_attributes | aARCH,fname, True);
+ if (!parent_dirname_talloc(tmp_talloc_ctx(), fname, &parent_dir,
+ &newname)) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (new_dos_attributes & FILE_FLAG_POSIX_SEMANTICS) {
+ posix_open = True;
+ unx_mode = (mode_t)(new_dos_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
+ new_dos_attributes = 0;
+ } else {
+ /* We add aARCH to this as this mode is only used if the file is
+ * created new. */
+ unx_mode = unix_mode(conn, new_dos_attributes | aARCH, fname,
+ parent_dir);
+ }
DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
"access_mask=0x%x share_access=0x%x "
create_disposition, create_options, unx_mode,
oplock_request));
- 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);
-
- set_saved_error_triple(ERRDOS, ERRbadshare,
- NT_STATUS_SHARING_VIOLATION);
- return NULL;
+ struct deferred_open_record *state =
+ (struct deferred_open_record *)pml->private_data.data;
+
+ /* Remember the absolute time of the original
+ request with this mid. We'll use it later to
+ see if this has timed out. */
+
+ request_time = pml->request_time;
+
+ /* Remove the deferred open entry under lock. */
+ lck = get_share_mode_lock(NULL, state->dev, state->inode, NULL, NULL);
+ if (lck == NULL) {
+ DEBUG(0, ("could not get share mode lock\n"));
+ } else {
+ del_deferred_open_entry(lck, mid);
+ TALLOC_FREE(lck);
}
+
/* Ensure we don't reprocess this message. */
- remove_sharing_violation_open_smb_message(mid);
+ remove_deferred_open_smb_message(mid);
}
- if (!check_name(fname,conn)) {
- return NULL;
+ status = check_name(conn, fname);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
}
- new_dos_attributes &= SAMBA_ATTRIBUTES_MASK;
- if (file_existed) {
- existing_dos_attributes = dos_mode(conn, fname, psbuf);
+ if (!posix_open) {
+ new_dos_attributes &= SAMBA_ATTRIBUTES_MASK;
+ if (file_existed) {
+ existing_dos_attributes = 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;
+ if (!lp_oplocks(SNUM(conn)) || global_client_failed_oplock_break ||
+ IS_VETO_OPLOCK_PATH(conn, fname)) {
+ /* Mask off everything except the private Samba bits. */
+ oplock_request &= SAMBA_PRIVATE_OPLOCK_MASK;
}
/* this is for OS/2 long file names - say we don't support them */
if (!lp_posix_pathnames() && strstr(fname,".+,;=[].")) {
/* OS/2 Workplace shell fix may be main code stream in a later
- * release. */
- set_saved_error_triple(ERRDOS, ERRcannotopen,
- NT_STATUS_OBJECT_NAME_NOT_FOUND);
+ * release. */
DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
"supported.\n"));
- return NULL;
+ if (use_nt_status()) {
+ return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+ }
+ return NT_STATUS_DOS(ERRDOS, ERRcannotopen);
}
switch( create_disposition ) {
DEBUG(5,("open_file_ntcreate: FILE_OPEN "
"requested for file %s and file "
"doesn't exist.\n", fname ));
- set_saved_error_triple(ERRDOS, ERRbadfile, NT_STATUS_OBJECT_NAME_NOT_FOUND);
errno = ENOENT;
- return NULL;
+ return NT_STATUS_OBJECT_NAME_NOT_FOUND;
}
break;
DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
"requested for file %s and file "
"doesn't exist.\n", fname ));
- set_saved_error_triple(ERRDOS, ERRbadfile, NT_STATUS_OBJECT_NAME_NOT_FOUND);
errno = ENOENT;
- return NULL;
+ return NT_STATUS_OBJECT_NAME_NOT_FOUND;
}
flags2 |= O_TRUNC;
break;
} else {
errno = EEXIST;
}
- return NULL;
+ return map_nt_error_from_unix(errno);
}
flags2 |= (O_CREAT|O_EXCL);
break;
break;
default:
- set_saved_error_triple(ERRDOS, ERRinvalidparam,
- NT_STATUS_INVALID_PARAMETER);
- return NULL;
+ return NT_STATUS_INVALID_PARAMETER;
}
/* We only care about matching attributes on file exists and
* overwrite. */
- if (file_existed && ((create_disposition == FILE_OVERWRITE) ||
+ if (!posix_open && file_existed && ((create_disposition == FILE_OVERWRITE) ||
(create_disposition == FILE_OVERWRITE_IF))) {
if (!open_match_attributes(conn, fname,
existing_dos_attributes,
(unsigned int)psbuf->st_mode,
(unsigned int)unx_mode ));
errno = EACCES;
- return NULL;
+ return NT_STATUS_ACCESS_DENIED;
}
}
/* This is a nasty hack - must fix... JRA. */
if (access_mask == MAXIMUM_ALLOWED_ACCESS) {
- access_mask = FILE_GENERIC_ALL;
+ open_access_mask = access_mask = FILE_GENERIC_ALL;
}
/*
*/
se_map_generic(&access_mask, &file_generic_mapping);
+ open_access_mask = access_mask;
+
+ if (flags2 & O_TRUNC) {
+ open_access_mask |= FILE_WRITE_DATA; /* This will cause oplock breaks. */
+ }
DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
"access_mask=0x%x\n", fname, access_mask ));
*/
if (access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) {
- flags = O_RDWR;
+ /* DENY_DOS opens are always underlying read-write on the
+ file handle, no matter what the requested access mask
+ says. */
+ if ((create_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) ||
+ access_mask & (FILE_READ_ATTRIBUTES|FILE_READ_DATA|FILE_READ_EA|FILE_EXECUTE)) {
+ flags = O_RDWR;
+ } else {
+ flags = O_WRONLY;
+ }
} else {
flags = O_RDONLY;
}
*/
#if defined(O_SYNC)
- if (create_options & FILE_WRITE_THROUGH) {
+ if ((create_options & FILE_WRITE_THROUGH) && lp_strict_sync(SNUM(conn))) {
flags2 |= O_SYNC;
}
#endif /* O_SYNC */
- if (!CAN_WRITE(conn)) {
+ if (posix_open & (access_mask & FILE_APPEND_DATA)) {
+ flags2 |= O_APPEND;
+ }
+
+ if (!posix_open && !CAN_WRITE(conn)) {
/*
* We should really return a permission denied error if either
* O_CREAT or O_TRUNC are set, but for compatibility with
DEBUG(5,("open_file_ntcreate: write access requested for "
"file %s on read only %s\n",
fname, !CAN_WRITE(conn) ? "share" : "file" ));
- set_saved_error_triple(ERRDOS, ERRnoaccess,
- NT_STATUS_ACCESS_DENIED);
errno = EACCES;
- return NULL;
+ return NT_STATUS_ACCESS_DENIED;
}
- fsp = file_new(conn);
- if(!fsp) {
- return NULL;
+ status = file_new(conn, &fsp);
+ if(!NT_STATUS_IS_OK(status)) {
+ return status;
}
- if (file_existed) {
+ fsp->dev = psbuf->st_dev;
+ fsp->inode = psbuf->st_ino;
+ fsp->share_access = share_access;
+ fsp->fh->private_options = create_options;
+ fsp->access_mask = open_access_mask; /* We change this to the
+ * requested access_mask after
+ * the open is done. */
+ fsp->posix_open = posix_open;
+
+ /* Ensure no SAMBA_PRIVATE bits can be set. */
+ fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
+
+ if (timeval_is_zero(&request_time)) {
+ request_time = fsp->open_time;
+ }
+ if (file_existed) {
dev = psbuf->st_dev;
inode = psbuf->st_ino;
- lock_share_entry(conn, dev, inode);
-
- num_share_modes = open_mode_check(conn, fname, dev, inode,
- access_mask, share_access,
- create_options,
- &flags, &oplock_request,
- &all_current_opens_are_level_II);
- if(num_share_modes == -1) {
-
- if (!internal_only_open) {
- NTSTATUS status;
- get_saved_error_triple(NULL, NULL, &status);
- if (NT_STATUS_EQUAL(status,NT_STATUS_SHARING_VIOLATION)) {
- /* Check if this can be done with the
- * deny_dos and fcb calls. */
- if (create_options &
- (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS|
- NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) {
- files_struct *fsp_dup;
- fsp_dup = fcb_or_dos_open(conn, fname, dev,
- inode, access_mask,
- share_access,
- create_options);
-
- if (fsp_dup) {
- unlock_share_entry(conn, dev, inode);
- file_free(fsp);
- if (pinfo) {
- *pinfo = FILE_WAS_OPENED;
- }
- conn->num_files_open++;
- return fsp_dup;
- }
+ lck = get_share_mode_lock(NULL, dev, inode,
+ conn->connectpath,
+ fname);
+
+ if (lck == NULL) {
+ file_free(fsp);
+ DEBUG(0, ("Could not get share mode lock\n"));
+ return NT_STATUS_SHARING_VIOLATION;
+ }
+
+ /* First pass - send break only on batch oplocks. */
+ if (delay_for_oplocks(lck, fsp, 1, oplock_request)) {
+ schedule_defer_open(lck, request_time);
+ TALLOC_FREE(lck);
+ file_free(fsp);
+ return NT_STATUS_SHARING_VIOLATION;
+ }
+
+ /* Use the client requested access mask here, not the one we
+ * open with. */
+ status = open_mode_check(conn, fname, lck,
+ access_mask, share_access,
+ create_options, &file_existed);
+
+ if (NT_STATUS_IS_OK(status)) {
+ /* We might be going to allow this open. Check oplock
+ * status again. */
+ /* Second pass - send break for both batch or
+ * exclusive oplocks. */
+ if (delay_for_oplocks(lck, fsp, 2, oplock_request)) {
+ schedule_defer_open(lck, request_time);
+ TALLOC_FREE(lck);
+ file_free(fsp);
+ return NT_STATUS_SHARING_VIOLATION;
+ }
+ }
+
+ if (NT_STATUS_EQUAL(status, NT_STATUS_DELETE_PENDING)) {
+ /* DELETE_PENDING is not deferred for a second */
+ TALLOC_FREE(lck);
+ file_free(fsp);
+ return status;
+ }
+
+ if (!NT_STATUS_IS_OK(status)) {
+ uint32 can_access_mask;
+ BOOL can_access = True;
+
+ SMB_ASSERT(NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION));
+
+ /* Check if this can be done with the deny_dos and fcb
+ * calls. */
+ if (create_options &
+ (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS|
+ NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) {
+ files_struct *fsp_dup;
+
+ /* Use the client requested access mask here,
+ * not the one we open with. */
+ fsp_dup = fcb_or_dos_open(conn, fname, dev,
+ inode, access_mask,
+ share_access,
+ create_options);
+
+ if (fsp_dup) {
+ TALLOC_FREE(lck);
+ file_free(fsp);
+ if (pinfo) {
+ *pinfo = FILE_WAS_OPENED;
}
+ conn->num_files_open++;
+ *result = fsp_dup;
+ return NT_STATUS_OK;
}
}
* MS-Access. If a file open will fail due to share
* permissions and also for security (access) reasons,
* we need to return the access failed error, not the
- * share error. This means we must attempt to open the
- * file anyway in order to get the UNIX access error -
- * even if we're going to fail the open for share
- * reasons. This is bad, as we're burning another fd
- * if there are existing locks but there's nothing
- * else 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.
+ * share error. We can't open the file due to kernel
+ * oplock deadlock (it's possible we failed above on
+ * the open_mode_check()) so use a userspace check.
*/
- errno = 0;
- fsp_open = open_file(fsp,conn,fname,psbuf,
- flags|(flags2&~(O_TRUNC|O_CREAT)),
- unx_mode,access_mask);
-
- DEBUG(4,("open_file_ntcreate : share_mode deny - "
- "calling open_file with flags=0x%X "
- "flags2=0x%X mode=0%o returned %d\n",
- flags, (flags2&~(O_TRUNC|O_CREAT)),
- (unsigned int)unx_mode, (int)fsp_open ));
-
- if (!fsp_open && errno) {
- /* Default error. */
- set_saved_error_triple(ERRDOS, ERRnoaccess,
- NT_STATUS_ACCESS_DENIED);
+
+ if (flags & O_RDWR) {
+ can_access_mask = FILE_READ_DATA|FILE_WRITE_DATA;
+ } else if (flags & O_WRONLY) {
+ can_access_mask = FILE_WRITE_DATA;
+ } else {
+ can_access_mask = FILE_READ_DATA;
+ }
+
+ if (((can_access_mask & FILE_WRITE_DATA) && !CAN_WRITE(conn)) ||
+ !can_access_file(conn,fname,psbuf,can_access_mask)) {
+ can_access = False;
}
/*
* cope with the braindead 1 second delay.
*/
- if (!internal_only_open) {
- NTSTATUS status;
- get_saved_error_triple(NULL, NULL, &status);
- if (NT_STATUS_EQUAL(status,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);
+ if (!(oplock_request & INTERNAL_OPEN_ONLY) &&
+ lp_defer_sharing_violations()) {
+ struct timeval timeout;
+ struct deferred_open_record state;
+ int timeout_usecs;
+
+ /* this is a hack to speed up torture tests
+ in 'make test' */
+ timeout_usecs = lp_parm_int(SNUM(conn),
+ "smbd","sharedelay",
+ SHARING_VIOLATION_USEC_WAIT);
+
+ /* This is a relative time, added to the absolute
+ request_time value to get the absolute timeout time.
+ Note that if this is the second or greater time we enter
+ this codepath for this particular request mid then
+ request_time is left as the absolute time of the *first*
+ time this request mid was processed. This is what allows
+ the request to eventually time out. */
+
+ timeout = timeval_set(0, timeout_usecs);
+
+ /* Nothing actually uses state.delayed_for_oplocks
+ but it's handy to differentiate in debug messages
+ between a 30 second delay due to oplock break, and
+ a 1 second delay for share mode conflicts. */
+
+ state.delayed_for_oplocks = False;
+ state.dev = dev;
+ state.inode = inode;
+
+ if (!request_timed_out(request_time,
+ timeout)) {
+ defer_open(lck, request_time, timeout,
+ &state);
}
}
- unlock_share_entry(conn, dev, inode);
- if (fsp_open) {
- fd_close(conn, fsp);
+ TALLOC_FREE(lck);
+ if (can_access) {
/*
* We have detected a sharing violation here
* so return the correct error code
*/
- set_saved_error_triple(ERRDOS, ERRbadshare,
- NT_STATUS_SHARING_VIOLATION);
+ status = NT_STATUS_SHARING_VIOLATION;
+ } else {
+ status = NT_STATUS_ACCESS_DENIED;
}
file_free(fsp);
- return NULL;
+ return status;
}
/*
*/
}
+ SMB_ASSERT(!file_existed || (lck != NULL));
+
/*
* Ensure we pay attention to default ACLs on directories if required.
*/
if ((flags2 & O_CREAT) && lp_inherit_acls(SNUM(conn)) &&
- (def_acl = directory_has_default_acl(conn, parent_dirname(fname)))) {
+ (def_acl = directory_has_default_acl(conn, parent_dir))) {
unx_mode = 0777;
}
- DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o\n",
- (unsigned int)flags,(unsigned int)flags2,(unsigned int)unx_mode));
+ DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
+ "access_mask = 0x%x, open_access_mask = 0x%x\n",
+ (unsigned int)flags, (unsigned int)flags2,
+ (unsigned int)unx_mode, (unsigned int)access_mask,
+ (unsigned int)open_access_mask));
/*
* open_file strips any O_TRUNC flags itself.
*/
- fsp_open = open_file(fsp,conn,fname,psbuf,flags|flags2,unx_mode,access_mask);
+ fsp_open = open_file(fsp, conn, parent_dir, newname, fname, psbuf,
+ flags|flags2, unx_mode, access_mask,
+ open_access_mask);
- if (!fsp_open && (flags == O_RDWR) && (errno != ENOENT)) {
- if((fsp_open = open_file(fsp,conn,fname,psbuf,
- O_RDONLY,unx_mode,access_mask)) == True) {
- flags = O_RDONLY;
- }
- }
-
- if (!fsp_open) {
- if(file_existed) {
- unlock_share_entry(conn, dev, inode);
+ if (!NT_STATUS_IS_OK(fsp_open)) {
+ if (lck != NULL) {
+ TALLOC_FREE(lck);
}
file_free(fsp);
- return NULL;
+ return fsp_open;
}
- /*
- * Deal with the race condition where two smbd's detect the file
- * doesn't exist and do the create at the same time. One of them will
- * win and set a share mode, the other (ie. this one) should check if
- * the requested share mode for this create is allowed.
- */
+ if (!file_existed) {
- if (!file_existed) {
+ /*
+ * Deal with the race condition where two smbd's detect the
+ * file doesn't exist and do the create at the same time. One
+ * of them will win and set a share mode, the other (ie. this
+ * one) should check if the requested share mode for this
+ * create is allowed.
+ */
/*
* Now the file exists and fsp is successfully opened,
dev = fsp->dev;
inode = fsp->inode;
- lock_share_entry_fsp(fsp);
-
- num_share_modes = open_mode_check(conn, fname, dev, inode,
- access_mask, share_access,
- create_options,
- &flags, &oplock_request,
- &all_current_opens_are_level_II);
-
- if(num_share_modes == -1) {
- NTSTATUS status;
- get_saved_error_triple(NULL, NULL, &status);
- if (NT_STATUS_EQUAL(status,NT_STATUS_SHARING_VIOLATION)) {
- /* Check if this can be done with the deny_dos
- * and fcb calls. */
- if (create_options &
- (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS|
- NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) {
- files_struct *fsp_dup;
- fsp_dup = fcb_or_dos_open(conn, fname, dev, inode,
- access_mask, share_access,
- create_options);
- if (fsp_dup) {
- unlock_share_entry(conn, dev, inode);
- fd_close(conn, fsp);
- file_free(fsp);
- if (pinfo) {
- *pinfo = FILE_WAS_OPENED;
- }
- conn->num_files_open++;
- return fsp_dup;
- }
- }
-
- /*
- * If we're returning a share violation,
- * ensure we cope with the braindead 1 second
- * delay.
- */
+ lck = get_share_mode_lock(NULL, dev, inode,
+ conn->connectpath,
+ fname);
- /* The fsp->open_time here represents the
- * current time of day. */
- defer_open_sharing_error(conn, &fsp->open_time,
- fname, dev, inode);
- }
+ if (lck == NULL) {
+ DEBUG(0, ("open_file_ntcreate: Could not get share "
+ "mode lock for %s\n", fname));
+ fd_close(conn, fsp);
+ file_free(fsp);
+ return NT_STATUS_SHARING_VIOLATION;
+ }
- unlock_share_entry_fsp(fsp);
- fd_close(conn,fsp);
+ /* First pass - send break only on batch oplocks. */
+ if (delay_for_oplocks(lck, fsp, 1, oplock_request)) {
+ schedule_defer_open(lck, request_time);
+ TALLOC_FREE(lck);
+ fd_close(conn, fsp);
file_free(fsp);
- /*
- * We have detected a sharing violation here, so
- * return the correct code.
- */
- set_saved_error_triple(ERRDOS, ERRbadshare,
- NT_STATUS_SHARING_VIOLATION);
- return NULL;
+ return NT_STATUS_SHARING_VIOLATION;
}
- /*
- * If there are any share modes set then the file *did*
- * exist. Ensure we return the correct value for action.
- */
+ status = open_mode_check(conn, fname, lck,
+ access_mask, share_access,
+ create_options, &file_existed);
+
+ if (NT_STATUS_IS_OK(status)) {
+ /* We might be going to allow this open. Check oplock
+ * status again. */
+ /* Second pass - send break for both batch or
+ * exclusive oplocks. */
+ if (delay_for_oplocks(lck, fsp, 2, oplock_request)) {
+ schedule_defer_open(lck, request_time);
+ TALLOC_FREE(lck);
+ fd_close(conn, fsp);
+ file_free(fsp);
+ return NT_STATUS_SHARING_VIOLATION;
+ }
+ }
+
+ if (!NT_STATUS_IS_OK(status)) {
+ struct deferred_open_record state;
- if (num_share_modes > 0) {
- file_existed = True;
+ fd_close(conn, fsp);
+ file_free(fsp);
+
+ state.delayed_for_oplocks = False;
+ state.dev = dev;
+ state.inode = inode;
+
+ /* Do it all over again immediately. In the second
+ * round we will find that the file existed and handle
+ * the DELETE_PENDING and FCB cases correctly. No need
+ * to duplicate the code here. Essentially this is a
+ * "goto top of this function", but don't tell
+ * anybody... */
+
+ defer_open(lck, request_time, timeval_zero(),
+ &state);
+ TALLOC_FREE(lck);
+ return status;
}
/*
* We exit this block with the share entry *locked*.....
*/
+
}
+ SMB_ASSERT(lck != NULL);
+
/* note that we ignore failure for the following. It is
basically a hack for NFS, and NFS will never set one of
these only read them. Nobody but Samba can ever set a deny
mode and we have already checked our more authoritative
locking database for permission to set this deny mode. If
- the kernel refuses the operations then the kernel is wrong */
+ the kernel refuses the operations then the kernel is wrong.
+ note that GPFS supports it as well - jmcd */
- kernel_flock(fsp, share_access);
+ ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, fsp->fh->fd, share_access);
+ if(ret_flock == -1 ){
+
+ TALLOC_FREE(lck);
+ fd_close(conn, fsp);
+ file_free(fsp);
+
+ return NT_STATUS_SHARING_VIOLATION;
+ }
/*
* At this point onwards, we can guarentee that the share entry
*/
if ((SMB_VFS_FTRUNCATE(fsp,fsp->fh->fd,0) == -1) ||
(SMB_VFS_FSTAT(fsp,fsp->fh->fd,psbuf)==-1)) {
- unlock_share_entry_fsp(fsp);
+ status = map_nt_error_from_unix(errno);
+ TALLOC_FREE(lck);
fd_close(conn,fsp);
file_free(fsp);
- return NULL;
+ return status;
}
}
fsp->access_mask = access_mask;
if (file_existed) {
+ /* stat opens on existing files don't get oplocks. */
+ if (is_stat_open(open_access_mask)) {
+ fsp->oplock_type = NO_OPLOCK;
+ }
+
if (!(flags2 & O_TRUNC)) {
info = FILE_WAS_OPENED;
} else {
}
} else {
info = FILE_WAS_CREATED;
- /* Change the owner if required. */
- if (lp_inherit_owner(SNUM(conn))) {
- change_owner_to_parent(conn, fsp, fsp->fsp_name,
- psbuf);
- }
}
if (pinfo) {
* file structs.
*/
- if(oplock_request && (num_share_modes == 0) &&
- !IS_VETO_OPLOCK_PATH(conn,fname) &&
- set_file_oplock(fsp, oplock_request) ) {
- port = global_oplock_port;
- } else if (oplock_request && all_current_opens_are_level_II) {
- port = global_oplock_port;
- oplock_request = LEVEL_II_OPLOCK;
- set_file_oplock(fsp, oplock_request);
- } else {
- port = 0;
- oplock_request = 0;
+ if ((fsp->oplock_type != NO_OPLOCK) &&
+ (fsp->oplock_type != FAKE_LEVEL_II_OPLOCK)) {
+ if (!set_file_oplock(fsp, fsp->oplock_type)) {
+ /* Could not get the kernel oplock */
+ fsp->oplock_type = NO_OPLOCK;
+ }
}
- set_share_mode(fsp, port, oplock_request);
-
- if (create_options & FILE_DELETE_ON_CLOSE) {
- uint32 dosattr= existing_dos_attributes;
- NTSTATUS result;
+ if (info == FILE_WAS_OVERWRITTEN || info == FILE_WAS_CREATED || info == FILE_WAS_SUPERSEDED) {
+ new_file_created = True;
+ }
- if (info == FILE_WAS_OVERWRITTEN || info == FILE_WAS_CREATED ||
- info == FILE_WAS_SUPERSEDED) {
- dosattr = new_dos_attributes;
- }
+ set_share_mode(lck, fsp, current_user.ut.uid, 0, fsp->oplock_type, new_file_created);
- result = can_set_delete_on_close(fsp, True, dosattr);
+ /* Handle strange delete on close create semantics. */
+ if ((create_options & FILE_DELETE_ON_CLOSE) && can_set_initial_delete_on_close(lck)) {
+ status = can_set_delete_on_close(fsp, True, new_dos_attributes);
- if (!NT_STATUS_IS_OK(result)) {
- uint8 u_e_c;
- uint32 u_e_code;
- BOOL dummy_del_on_close;
+ if (!NT_STATUS_IS_OK(status)) {
/* Remember to delete the mode we just added. */
- del_share_mode(fsp, NULL, &dummy_del_on_close);
- unlock_share_entry_fsp(fsp);
+ del_share_mode(lck, fsp);
+ TALLOC_FREE(lck);
fd_close(conn,fsp);
file_free(fsp);
- ntstatus_to_dos(result, &u_e_c, &u_e_code);
- set_saved_error_triple(u_e_c, u_e_code, result);
- return NULL;
+ return status;
}
- set_delete_on_close(fsp, True);
+ /* Note that here we set the *inital* delete on close flag,
+ not the regular one. The magic gets handled in close. */
+ fsp->initial_delete_on_close = True;
}
- if (info == FILE_WAS_OVERWRITTEN || info == FILE_WAS_CREATED ||
- info == FILE_WAS_SUPERSEDED) {
+ if (new_file_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,
+ if (!posix_open) {
+ file_set_dosmode(conn, fname,
new_dos_attributes | aARCH, NULL,
- True);
+ parent_dir);
+ }
}
}
* selected.
*/
- if (!file_existed && !def_acl) {
+ if (!posix_open && !file_existed && !def_acl) {
int saved_errno = errno; /* We might get ENOSYS in the next
* call.. */
- if (SMB_VFS_FCHMOD_ACL(fsp, fsp->fh->fd, unx_mode) == -1
- && errno == ENOSYS) {
+ if (SMB_VFS_FCHMOD_ACL(fsp, fsp->fh->fd, unx_mode) == -1 &&
+ errno == ENOSYS) {
errno = saved_errno; /* Ignore ENOSYS */
}
if (ret == -1 && errno == ENOSYS) {
errno = saved_errno; /* Ignore ENOSYS */
} else {
- DEBUG(5, ("open_file_shared: failed to reset "
+ DEBUG(5, ("open_file_ntcreate: reset "
"attributes of file %s to 0%o\n",
- fname, (unsigned int)new_unx_mode));
+ fname, (unsigned int)new_unx_mode));
ret = 0; /* Don't do the fchmod below. */
}
}
if ((ret == -1) &&
(SMB_VFS_FCHMOD(fsp, fsp->fh->fd, new_unx_mode) == -1))
- DEBUG(5, ("open_file_shared: failed to reset "
+ DEBUG(5, ("open_file_ntcreate: failed to reset "
"attributes of file %s to 0%o\n",
- fname, (unsigned int)new_unx_mode));
+ fname, (unsigned int)new_unx_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);
+ del_deferred_open_entry(lck, mid);
+ TALLOC_FREE(lck);
conn->num_files_open++;
- return fsp;
+ *result = fsp;
+ return NT_STATUS_OK;
}
/****************************************************************************
Open a file for for write to ensure that we can fchmod it.
****************************************************************************/
-files_struct *open_file_fchmod(connection_struct *conn, const char *fname,
- SMB_STRUCT_STAT *psbuf)
+NTSTATUS open_file_fchmod(connection_struct *conn, const char *fname,
+ SMB_STRUCT_STAT *psbuf, files_struct **result)
{
files_struct *fsp = NULL;
- BOOL fsp_open;
+ NTSTATUS status;
if (!VALID_STAT(*psbuf)) {
- return NULL;
+ return NT_STATUS_INVALID_PARAMETER;
}
- fsp = file_new(conn);
- if(!fsp) {
- return NULL;
+ status = file_new(conn, &fsp);
+ if(!NT_STATUS_IS_OK(status)) {
+ return status;
}
/* note! we must use a non-zero desired access or we don't get
a real file descriptor. Oh what a twisted web we weave. */
- fsp_open = open_file(fsp,conn,fname,psbuf,O_WRONLY,0,FILE_WRITE_DATA);
+ status = open_file(fsp, conn, NULL, NULL, fname, psbuf, O_WRONLY, 0,
+ FILE_WRITE_DATA, FILE_WRITE_DATA);
/*
* This is not a user visible file open.
* the conn->num_files_open.
*/
- if (!fsp_open) {
+ if (!NT_STATUS_IS_OK(status)) {
file_free(fsp);
- return NULL;
+ return status;
}
- return fsp;
+ *result = fsp;
+ return NT_STATUS_OK;
}
/****************************************************************************
Close the fchmod file fd - ensure no locks are lost.
****************************************************************************/
-int close_file_fchmod(files_struct *fsp)
+NTSTATUS close_file_fchmod(files_struct *fsp)
{
- int ret = fd_close(fsp->conn, fsp);
+ NTSTATUS status = fd_close(fsp->conn, fsp);
file_free(fsp);
- return ret;
+ return status;
+}
+
+static NTSTATUS mkdir_internal(connection_struct *conn,
+ const char *name,
+ uint32 file_attributes,
+ SMB_STRUCT_STAT *psbuf)
+{
+ mode_t mode;
+ char *parent_dir;
+ const char *dirname;
+ NTSTATUS status;
+
+ if(!CAN_WRITE(conn)) {
+ DEBUG(5,("mkdir_internal: failing create on read-only share "
+ "%s\n", lp_servicename(SNUM(conn))));
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ status = check_name(conn, name);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ if (!parent_dirname_talloc(tmp_talloc_ctx(), name, &parent_dir,
+ &dirname)) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
+ mode = (mode_t)(file_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
+ } else {
+ mode = unix_mode(conn, aDIR, name, parent_dir);
+ }
+
+ if (SMB_VFS_MKDIR(conn, name, mode) != 0) {
+ return map_nt_error_from_unix(errno);
+ }
+
+ /* Ensure we're checking for a symlink here.... */
+ /* We don't want to get caught by a symlink racer. */
+
+ if (SMB_VFS_LSTAT(conn, name, psbuf) == -1) {
+ DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
+ name, strerror(errno)));
+ return map_nt_error_from_unix(errno);
+ }
+
+ if (!S_ISDIR(psbuf->st_mode)) {
+ DEBUG(0, ("Directory just '%s' created is not a directory\n",
+ name));
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ if (lp_inherit_perms(SNUM(conn))) {
+ inherit_access_acl(conn, parent_dir, name, mode);
+ }
+
+ if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS)) {
+ /*
+ * Check if high bits should have been set,
+ * then (if bits are missing): add them.
+ * Consider bits automagically set by UNIX, i.e. SGID bit from parent
+ * dir.
+ */
+ if (mode & ~(S_IRWXU|S_IRWXG|S_IRWXO) && (mode & ~psbuf->st_mode)) {
+ SMB_VFS_CHMOD(conn, name,
+ psbuf->st_mode | (mode & ~psbuf->st_mode));
+ }
+ }
+
+ /* Change the owner if required. */
+ if (lp_inherit_owner(SNUM(conn))) {
+ change_dir_owner_to_parent(conn, parent_dir, name, psbuf);
+ }
+
+ notify_fname(conn, NOTIFY_ACTION_ADDED, FILE_NOTIFY_CHANGE_DIR_NAME,
+ name);
+
+ return NT_STATUS_OK;
}
/****************************************************************************
Open a directory from an NT SMB call.
****************************************************************************/
-files_struct *open_directory(connection_struct *conn,
- const char *fname,
- SMB_STRUCT_STAT *psbuf,
- uint32 access_mask,
- uint32 share_access,
- uint32 create_disposition,
- uint32 create_options,
- int *pinfo)
+NTSTATUS open_directory(connection_struct *conn,
+ const char *fname,
+ SMB_STRUCT_STAT *psbuf,
+ uint32 access_mask,
+ uint32 share_access,
+ uint32 create_disposition,
+ uint32 create_options,
+ uint32 file_attributes,
+ int *pinfo,
+ files_struct **result)
{
files_struct *fsp = NULL;
BOOL dir_existed = VALID_STAT(*psbuf) ? True : False;
- BOOL create_dir = False;
+ struct share_mode_lock *lck = NULL;
+ NTSTATUS status;
int info = 0;
DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
"share_access = 0x%x create_options = 0x%x, "
- "create_disposition = 0x%x\n",
+ "create_disposition = 0x%x, file_attributes = 0x%x\n",
fname,
(unsigned int)access_mask,
(unsigned int)share_access,
(unsigned int)create_options,
- (unsigned int)create_disposition));
+ (unsigned int)create_disposition,
+ (unsigned int)file_attributes));
if (is_ntfs_stream_name(fname)) {
DEBUG(0,("open_directory: %s is a stream name!\n", fname ));
- /* NB. Is the DOS error ERRbadpath or ERRbaddirectory ? */
- set_saved_error_triple(ERRDOS, ERRbadpath,
- NT_STATUS_NOT_A_DIRECTORY);
- return NULL;
- }
-
- if (dir_existed && !S_ISDIR(psbuf->st_mode)) {
- DEBUG(0,("open_directory: %s is not a directory !\n", fname ));
- /* NB. Is the DOS error ERRbadpath or ERRbaddirectory ? */
- set_saved_error_triple(ERRDOS, ERRbadpath,
- NT_STATUS_NOT_A_DIRECTORY);
- return NULL;
+ return NT_STATUS_NOT_A_DIRECTORY;
}
switch( create_disposition ) {
case FILE_OPEN:
- /* If directory exists open. If directory doesn't
- * exist error. */
- if (!dir_existed) {
- DEBUG(5,("open_directory: FILE_OPEN requested "
- "for directory %s and it doesn't "
- "exist.\n", fname ));
- set_saved_error_triple(ERRDOS, ERRbadfile,
- NT_STATUS_OBJECT_NAME_NOT_FOUND);
- return NULL;
- }
+
info = FILE_WAS_OPENED;
+
+ /*
+ * We want to follow symlinks here.
+ */
+
+ if (SMB_VFS_STAT(conn, fname, psbuf) != 0) {
+ return map_nt_error_from_unix(errno);
+ }
+
break;
case FILE_CREATE:
+
/* If directory exists error. If directory doesn't
* exist create. */
- if (dir_existed) {
- DEBUG(5,("open_directory: FILE_CREATE "
- "requested for directory %s and it "
- "already exists.\n", fname ));
- set_saved_error_triple(ERRDOS, ERRfilexists,
- NT_STATUS_OBJECT_NAME_COLLISION);
- return NULL;
+
+ status = mkdir_internal(conn,
+ fname,
+ file_attributes,
+ psbuf);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(2, ("open_directory: unable to create "
+ "%s. Error was %s\n", fname,
+ nt_errstr(status)));
+ return status;
}
- create_dir = True;
+
info = FILE_WAS_CREATED;
break;
case FILE_OPEN_IF:
- /* If directory exists open. If directory doesn't
- * exist create. */
- if (!dir_existed) {
- create_dir = True;
+ /*
+ * If directory exists open. If directory doesn't
+ * exist create.
+ */
+
+ status = mkdir_internal(conn,
+ fname,
+ file_attributes,
+ psbuf);
+
+ if (NT_STATUS_IS_OK(status)) {
info = FILE_WAS_CREATED;
- } else {
+ }
+
+ if (NT_STATUS_EQUAL(status,
+ NT_STATUS_OBJECT_NAME_COLLISION)) {
info = FILE_WAS_OPENED;
+ status = NT_STATUS_OK;
}
+
break;
case FILE_SUPERSEDE:
DEBUG(5,("open_directory: invalid create_disposition "
"0x%x for directory %s\n",
(unsigned int)create_disposition, fname));
- file_free(fsp);
- set_saved_error_triple(ERRDOS, ERRinvalidparam,
- NT_STATUS_INVALID_PARAMETER);
- return NULL;
+ return NT_STATUS_INVALID_PARAMETER;
}
- if (create_dir) {
- /*
- * Try and create the directory.
- */
-
- /* We know bad_path is false as it's caught earlier. */
-
- NTSTATUS status = mkdir_internal(conn, fname, False);
-
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(2,("open_directory: unable to create %s. "
- "Error was %s\n", fname, strerror(errno) ));
- /* Ensure we return the correct NT status to the
- * client. */
- set_saved_error_triple(0, 0, status);
- return NULL;
- }
-
- /* Ensure we're checking for a symlink here.... */
- /* We don't want to get caught by a symlink racer. */
-
- if(SMB_VFS_LSTAT(conn,fname, psbuf) != 0) {
- return NULL;
- }
-
- if(!S_ISDIR(psbuf->st_mode)) {
- DEBUG(0,("open_directory: %s is not a directory !\n",
- fname ));
- return NULL;
- }
+ if(!S_ISDIR(psbuf->st_mode)) {
+ DEBUG(5,("open_directory: %s is not a directory !\n",
+ fname ));
+ return NT_STATUS_NOT_A_DIRECTORY;
}
- fsp = file_new(conn);
- if(!fsp) {
- return NULL;
+ status = file_new(conn, &fsp);
+ if(!NT_STATUS_IS_OK(status)) {
+ return status;
}
/*
fsp->dev = psbuf->st_dev;
fsp->vuid = current_user.vuid;
fsp->file_pid = global_smbpid;
- fsp->can_lock = True;
+ fsp->can_lock = False;
fsp->can_read = False;
fsp->can_write = False;
fsp->sent_oplock_break = NO_BREAK_SENT;
fsp->is_directory = True;
fsp->is_stat = False;
+ fsp->posix_open = (file_attributes & FILE_FLAG_POSIX_SEMANTICS) ? True : False;
+
string_set(&fsp->fsp_name,fname);
+ lck = get_share_mode_lock(NULL, fsp->dev, fsp->inode,
+ conn->connectpath,
+ fname);
+
+ if (lck == NULL) {
+ DEBUG(0, ("open_directory: Could not get share mode lock for %s\n", fname));
+ file_free(fsp);
+ return NT_STATUS_SHARING_VIOLATION;
+ }
+
+ status = open_mode_check(conn, fname, lck,
+ access_mask, share_access,
+ create_options, &dir_existed);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(lck);
+ file_free(fsp);
+ return status;
+ }
+
+ set_share_mode(lck, fsp, current_user.ut.uid, 0, NO_OPLOCK, True);
+
+ /* For directories the delete on close bit at open time seems
+ always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
if (create_options & FILE_DELETE_ON_CLOSE) {
- NTSTATUS status = can_set_delete_on_close(fsp, True, 0);
- if (!NT_STATUS_IS_OK(status)) {
+ status = can_set_delete_on_close(fsp, True, 0);
+ if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status, NT_STATUS_DIRECTORY_NOT_EMPTY)) {
+ TALLOC_FREE(lck);
file_free(fsp);
- return NULL;
+ return status;
}
- }
- /* Change the owner if required. */
- if ((info == FILE_WAS_CREATED) && lp_inherit_owner(SNUM(conn))) {
- change_owner_to_parent(conn, fsp, fsp->fsp_name, psbuf);
+ if (NT_STATUS_IS_OK(status)) {
+ /* Note that here we set the *inital* delete on close flag,
+ not the regular one. The magic gets handled in close. */
+ fsp->initial_delete_on_close = True;
+ }
}
+ TALLOC_FREE(lck);
+
if (pinfo) {
*pinfo = info;
}
conn->num_files_open++;
- return fsp;
+ *result = fsp;
+ return NT_STATUS_OK;
+}
+
+NTSTATUS create_directory(connection_struct *conn, const char *directory)
+{
+ NTSTATUS status;
+ SMB_STRUCT_STAT sbuf;
+ files_struct *fsp;
+
+ SET_STAT_INVALID(sbuf);
+
+ status = open_directory(conn, directory, &sbuf,
+ FILE_READ_ATTRIBUTES, /* Just a stat open */
+ FILE_SHARE_NONE, /* Ignored for stat opens */
+ FILE_CREATE,
+ 0,
+ FILE_ATTRIBUTE_DIRECTORY,
+ NULL,
+ &fsp);
+
+ if (NT_STATUS_IS_OK(status)) {
+ close_file(fsp, NORMAL_CLOSE);
+ }
+
+ return status;
}
/****************************************************************************
Open a pseudo-file (no locking checks - a 'stat' open).
****************************************************************************/
-files_struct *open_file_stat(connection_struct *conn, char *fname,
- SMB_STRUCT_STAT *psbuf)
+NTSTATUS open_file_stat(connection_struct *conn, const char *fname,
+ SMB_STRUCT_STAT *psbuf, files_struct **result)
{
files_struct *fsp = NULL;
+ NTSTATUS status;
- if (!VALID_STAT(*psbuf))
- return NULL;
+ if (!VALID_STAT(*psbuf)) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
/* Can't 'stat' open directories. */
- if(S_ISDIR(psbuf->st_mode))
- return NULL;
+ if(S_ISDIR(psbuf->st_mode)) {
+ return NT_STATUS_FILE_IS_A_DIRECTORY;
+ }
- fsp = file_new(conn);
- if(!fsp)
- return NULL;
+ status = file_new(conn, &fsp);
+ if(!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
DEBUG(5,("open_file_stat: 'opening' file %s\n", fname));
conn->num_files_open++;
- return fsp;
+ *result = fsp;
+ return NT_STATUS_OK;
+}
+
+/****************************************************************************
+ Receive notification that one of our open files has been renamed by another
+ smbd process.
+****************************************************************************/
+
+void msg_file_was_renamed(struct messaging_context *msg,
+ void *private_data,
+ uint32_t msg_type,
+ struct server_id server_id,
+ DATA_BLOB *data)
+{
+ files_struct *fsp;
+ char *frm = (char *)data->data;
+ SMB_DEV_T dev;
+ SMB_INO_T inode;
+ const char *sharepath;
+ const char *newname;
+ size_t sp_len;
+
+ if (data->data == NULL
+ || data->length < MSG_FILE_RENAMED_MIN_SIZE + 2) {
+ DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
+ data->length));
+ return;
+ }
+
+ /* Unpack the message. */
+ dev = DEV_T_VAL(frm,0);
+ inode = INO_T_VAL(frm,8);
+ sharepath = &frm[16];
+ newname = sharepath + strlen(sharepath) + 1;
+ sp_len = strlen(sharepath);
+
+ DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
+ "dev %x, inode %.0f\n",
+ sharepath, newname, (unsigned int)dev, (double)inode ));
+
+ for(fsp = file_find_di_first(dev, inode); fsp; fsp = file_find_di_next(fsp)) {
+ if (memcmp(fsp->conn->connectpath, sharepath, sp_len) == 0) {
+ DEBUG(10,("msg_file_was_renamed: renaming file fnum %d from %s -> %s\n",
+ fsp->fnum, fsp->fsp_name, newname ));
+ string_set(&fsp->fsp_name, newname);
+ } else {
+ /* TODO. JRA. */
+ /* Now we have the complete path we can work out if this is
+ actually within this share and adjust newname accordingly. */
+ DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
+ "not sharepath %s) "
+ "fnum %d from %s -> %s\n",
+ fsp->conn->connectpath,
+ sharepath,
+ fsp->fnum,
+ fsp->fsp_name,
+ newname ));
+ }
+ }
}
git.samba.org / sfrench / samba-autobuild / .git / blobdiff