diff options
Diffstat (limited to 'source/smbd/server.c')
| -rw-r--r-- | source/smbd/server.c | 31 |
1 files changed, 17 insertions, 14 deletions
diff --git a/source/smbd/server.c b/source/smbd/server.c index 65e620c7f05..4ae139fc58e 100644 --- a/source/smbd/server.c +++ b/source/smbd/server.c @@ -937,7 +937,7 @@ int fd_attempt_close(file_fd_struct *fd_ptr) /**************************************************************************** open a file ****************************************************************************/ -void open_file(int fnum,int cnum,char *fname1,int flags,int mode, struct stat *sbuf) +static void open_file(int fnum,int cnum,char *fname1,int flags,int mode, struct stat *sbuf) { extern struct current_user current_user; pstring fname; @@ -1033,14 +1033,6 @@ void open_file(int fnum,int cnum,char *fname1,int flags,int mode, struct stat *s return; } - /* - * If O_TRUNC was set, ensure we truncate the file. - * open_file_shared explicitly clears this flag before - * calling open_file, so we can safely do this here. - */ - if(flags & O_TRUNC) - ftruncate(fd_ptr->fd, 0); - } else { int open_flags; /* We need to allocate a new file_fd_struct (this increments the @@ -1389,11 +1381,19 @@ free_and_exit: Helper for open_file_shared. Truncate a file after checking locking; close file if locked. **************************************************************************/ -static void truncate_unless_locked(int fnum, int cnum) +static void truncate_unless_locked(int fnum, int cnum, share_lock_token token, + BOOL *share_locked) { if (Files[fnum].can_write){ if (is_locked(fnum,cnum,0x3FFFFFFF,0)){ + /* If share modes are in force for this connection we + have the share entry locked. Unlock it before closing. */ + if (*share_locked && lp_share_modes(SNUM(cnum))) + unlock_share_entry( cnum, Files[fnum].fd_ptr->dev, + Files[fnum].fd_ptr->inode, token); close_file(fnum); + /* Share mode no longer locked. */ + *share_locked = False; errno = EACCES; unix_ERR_class = ERRDOS; unix_ERR_code = ERRlock; @@ -1600,12 +1600,15 @@ void open_file_shared(int fnum,int cnum,char *fname,int share_mode,int ofun, if (!file_existed) *action = 2; if (file_existed && (flags2 & O_TRUNC)) *action = 3; } - - if ((flags2&O_TRUNC) && file_existed) - truncate_unless_locked(fnum,cnum); - + /* We must create the share mode entry before truncate as + truncate can fail due to locking and have to close the + file (which expects the share_mode_entry to be there). + */ if (lp_share_modes(SNUM(cnum))) set_share_mode(token, fnum); + + if ((flags2&O_TRUNC) && file_existed) + truncate_unless_locked(fnum,cnum,token,&share_locked); } if (share_locked && lp_share_modes(SNUM(cnum))) |