diff options
author | Jeremy Allison <jra@samba.org> | 2000-04-22 00:33:16 +0000 |
---|---|---|
committer | Jeremy Allison <jra@samba.org> | 2000-04-22 00:33:16 +0000 |
commit | 6259f51dd9918eccc9697f3763d918f7c9b82b50 (patch) | |
tree | 1bbfa0d6eb5767f713b290743dd9fa9fb9f62ce9 /source3 | |
parent | b7a1d19d114288ac3292a26d2d42825e26884d36 (diff) | |
download | samba-6259f51dd9918eccc9697f3763d918f7c9b82b50.tar.gz samba-6259f51dd9918eccc9697f3763d918f7c9b82b50.tar.bz2 samba-6259f51dd9918eccc9697f3763d918f7c9b82b50.zip |
This is a *big* checkin that may break some things, but implements the
new open mechanism Andrew & I discussed.
config.sub:
configure: Included the QNX patch.
include/vfs.h:
smbd/vfs-wrap.c:
smbd/vfs.c: Added ftruncate vfs call (needed).
Note that we will also need locking calls in the vfs (to be added).
lib/util_unistr.c:
nmbd/nmbd_processlogon.c: Fix for NT domain logons causing nmbd to core dump.
Also fix for sidsize DOS bug.
locking/locking.c: Check value of ret before using it for memdup.
printing/printing.c: Convert print_fsp_open to return an allocated fsp.
rpc_server/srv_lsa.c: Fix for NT domain logons.
I have removed all use of lp_share_modes() from the code (although I
left the parameter in the table for backwards compatibility). It no longer makes
sense for this to exist.
smbd/close.c: Removed lp_share_modes().
smbd/fileio.c: Fixed parameters to unlock_share_entry call in panic code.
smbd/files.c: Correctly set the unix_ERR_code to ERRnofids on fsp allocation fail.
smbd/nttrans.c:
smbd/reply.c:
smbd/trans2.c: Changed all occurrences of open_file_shared/open_directory/
open_file_stat to return an fsp from the call.
smbd/open.c: Changed all occurrences of open_file_shared/open_directory/
open_file_stat to return an fsp from the call.
In addition I have fixed a long standing race condition in the deny mode
processing w.r.t. two smbd's creating a file. Andrew, please note that
your original idea of using open with O_EXCL in this case would not work
(I went over the races very carefully) and so we must re-check deny modes
*after* the open() call returns. This is because there is a race between
the open with O_EXCL and the lock of the share mode entry. Imagine the
case where the first smbd does the open with O_EXCL and a deny mode of DENY_ALL,
but is pre-empted before it locks the share modes and creates the deny
mode entry for DENY_ALL. A second smbd could then come in with O_RDONLY
and a deny mode of DENY_NONE and the two opens would be allowed.
The *only* way to fix this race is to lock the share modes after the
open and then do the deny mode checks *after* this lock in the case
where the file did not originally exist.
This code will need extensive testing but seems to initially work.
Jeremy.
(This used to be commit ab0ecc39d688f16b9692fe90b991f0b89287070a)
Diffstat (limited to 'source3')
-rwxr-xr-x | source3/config.sub | 2 | ||||
-rw-r--r-- | source3/include/proto.h | 13 | ||||
-rw-r--r-- | source3/include/vfs.h | 1 | ||||
-rw-r--r-- | source3/lib/util_unistr.c | 31 | ||||
-rw-r--r-- | source3/locking/locking.c | 3 | ||||
-rw-r--r-- | source3/nmbd/nmbd_processlogon.c | 11 | ||||
-rw-r--r-- | source3/printing/printing.c | 17 | ||||
-rw-r--r-- | source3/rpc_server/srv_lsa.c | 8 | ||||
-rw-r--r-- | source3/smbd/close.c | 13 | ||||
-rw-r--r-- | source3/smbd/fileio.c | 2 | ||||
-rw-r--r-- | source3/smbd/files.c | 8 | ||||
-rw-r--r-- | source3/smbd/nttrans.c | 56 | ||||
-rw-r--r-- | source3/smbd/open.c | 751 | ||||
-rw-r--r-- | source3/smbd/reply.c | 64 | ||||
-rw-r--r-- | source3/smbd/trans2.c | 165 | ||||
-rw-r--r-- | source3/smbd/vfs-wrap.c | 8 | ||||
-rw-r--r-- | source3/smbd/vfs.c | 7 |
17 files changed, 598 insertions, 562 deletions
diff --git a/source3/config.sub b/source3/config.sub index ccbdb0257d..90516535a1 100755 --- a/source3/config.sub +++ b/source3/config.sub @@ -827,7 +827,7 @@ case $os in | -riscix* | -lites* \ | -lynxos* | -bosx* | -nextstep* | -cxux* | -aout* | -elf* \ | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta | -udi \ - | -eabi* | -ieee*) + | -eabi* | -ieee* | -qnx*) ;; # CYGNUS LOCAL -go32 | -sim | -es1800* | -hms* | -xray | -os68k* | -none* | -v88r* \ diff --git a/source3/include/proto.h b/source3/include/proto.h index 4e5b614f56..dfa76b3995 100644 --- a/source3/include/proto.h +++ b/source3/include/proto.h @@ -493,8 +493,7 @@ char *string_truncate(char *s, int length); int dos_PutUniCode(char *dst,const char *src, ssize_t len, BOOL null_terminate); void ascii_to_unistr(uint16 *dest, const char *src, int maxlen); void unistr_to_ascii(char *dest, const uint16 *src, int len); -char *skip_unibuf(char *src, int len); -char *skip_unicode_string(char *buf,int n); +char *skip_unibuf(char *src, size_t len); char *dos_unistrn2(uint16 *src, int len); char *dos_unistr2(uint16 *src); char *dos_unistr2_to_str(UNISTR2 *str); @@ -1602,7 +1601,7 @@ int print_queue_snum(char *qname); BOOL print_queue_pause(int snum); BOOL print_queue_resume(int snum); BOOL print_queue_purge(int snum); -void print_fsp_open(files_struct *fsp,connection_struct *conn,char *jobname); +files_struct *print_fsp_open(connection_struct *conn,char *jobname); void print_fsp_end(files_struct *fsp); /*The following definitions come from profile/profile.c */ @@ -2928,6 +2927,7 @@ BOOL check_plaintext_password(char *user, char *old_passwd, /*The following definitions come from smbd/close.c */ +void close_filestruct(files_struct *fsp); int close_file(files_struct *fsp, BOOL normal_close); /*The following definitions come from smbd/conn.c */ @@ -3092,11 +3092,11 @@ int reply_nttrans(connection_struct *conn, /*The following definitions come from smbd/open.c */ int fd_close(struct connection_struct *conn, files_struct *fsp); -void open_file_shared(files_struct *fsp,connection_struct *conn,char *fname,int share_mode,int ofun, +files_struct *open_file_shared(connection_struct *conn,char *fname,int share_mode,int ofun, mode_t mode,int oplock_request, int *Access,int *action); -int open_file_stat(files_struct *fsp,connection_struct *conn, +files_struct *open_file_stat(connection_struct *conn, char *fname, int smb_ofun, SMB_STRUCT_STAT *pst, int *action); -int open_directory(files_struct *fsp,connection_struct *conn, +files_struct *open_directory(connection_struct *conn, char *fname, int smb_ofun, mode_t unixmode, int *action); BOOL check_file_sharing(connection_struct *conn,char *fname, BOOL rename_op); @@ -3311,6 +3311,7 @@ int vfswrap_lstat(char *path, int vfswrap_unlink(char *path); int vfswrap_chmod(char *path, mode_t mode); int vfswrap_utime(char *path, struct utimbuf *times); +int vfswrap_ftruncate(int fd, SMB_OFF_T offset); /*The following definitions come from smbd/vfs.c */ diff --git a/source3/include/vfs.h b/source3/include/vfs.h index fca9f7da84..a09991a0e7 100644 --- a/source3/include/vfs.h +++ b/source3/include/vfs.h @@ -136,6 +136,7 @@ struct vfs_ops { int (*unlink)(char *path); int (*chmod)(char *path, mode_t mode); int (*utime)(char *path, struct utimbuf *times); + int (*ftruncate)(int fd, SMB_OFF_T offset); }; struct vfs_options { diff --git a/source3/lib/util_unistr.c b/source3/lib/util_unistr.c index 0c88a0c7c7..71ef32a1fd 100644 --- a/source3/lib/util_unistr.c +++ b/source3/lib/util_unistr.c @@ -137,29 +137,22 @@ void unistr_to_ascii(char *dest, const uint16 *src, int len) *dest = 0; } -/* from TNG - should be fixed */ -char *skip_unibuf(char *src, int len) -{ - char *srcend = src + len; - - while (src < srcend && SVAL(src,0)) src += 2; - - return src; -} - - /******************************************************************* - Skip past some unicode strings in a buffer. + Skip past a unicode string, but not more than len. Always move + past a terminating zero if found. ********************************************************************/ -char *skip_unicode_string(char *buf,int n) +char *skip_unibuf(char *src, size_t len) { - while (n--) { - while (*buf) - buf += 2; - buf += 2; - } - return(buf); + char *srcend = src + len; + + while (src < srcend && SVAL(src,0)) + src += 2; + + if(!SVAL(src,0)) + src += 2; + + return src; } /******************************************************************* diff --git a/source3/locking/locking.c b/source3/locking/locking.c index bde1ffb567..affda89f08 100644 --- a/source3/locking/locking.c +++ b/source3/locking/locking.c @@ -662,7 +662,8 @@ int get_share_modes(connection_struct *conn, data = (struct locking_data *)dbuf.dptr; ret = data->num_share_mode_entries; - *shares = (share_mode_entry *)memdup(dbuf.dptr + sizeof(*data), ret * sizeof(**shares)); + if(ret) + *shares = (share_mode_entry *)memdup(dbuf.dptr + sizeof(*data), ret * sizeof(**shares)); free(dbuf.dptr); if (! *shares) return 0; diff --git a/source3/nmbd/nmbd_processlogon.c b/source3/nmbd/nmbd_processlogon.c index 9784afe9e2..bb4b7547a6 100644 --- a/source3/nmbd/nmbd_processlogon.c +++ b/source3/nmbd/nmbd_processlogon.c @@ -67,7 +67,7 @@ logons are not enabled.\n", inet_ntoa(p->ip) )); strupper(my_name); code = SVAL(buf,0); - DEBUG(1,("process_logon_packet: Logon from %s: code = %x\n", inet_ntoa(p->ip), code)); + DEBUG(1,("process_logon_packet: Logon from %s: code = 0x%x\n", inet_ntoa(p->ip), code)); switch (code) { @@ -202,10 +202,15 @@ reporting %s domain %s 0x%x ntversion=%x lm_nt token=%x lm_20 token=%x\n", domainsidsize = IVAL(q, 0); q += 4; - if (domainsidsize != 0) { + DEBUG(3,("process_logon_packet: SAMLOGON sidsize %d, len = %d\n", domainsidsize, len)); + + if (domainsidsize < (len - PTR_DIFF(q, buf)) && (domainsidsize != 0)) { q += domainsidsize; q = ALIGN4(q, buf); } + + DEBUG(3,("process_logon_packet: len = %d PTR_DIFF(q, buf) = %d\n", len, PTR_DIFF(q, buf) )); + if (len - PTR_DIFF(q, buf) > 8) { /* with NT5 clients we can sometimes get additional data - a length specificed string @@ -213,7 +218,7 @@ reporting %s domain %s 0x%x ntversion=%x lm_nt token=%x lm_20 token=%x\n", data (no idea what it is) */ int dom_len = CVAL(q, 0); q++; - if (dom_len != 0) { + if (dom_len < (len - PTR_DIFF(q, buf)) && (dom_len != 0)) { q += dom_len + 1; } q += 16; diff --git a/source3/printing/printing.c b/source3/printing/printing.c index 3202c6937d..58f284b4fc 100644 --- a/source3/printing/printing.c +++ b/source3/printing/printing.c @@ -856,20 +856,27 @@ BOOL print_queue_purge(int snum) open a print file and setup a fsp for it. This is a wrapper around print_job_start(). ***************************************************************************/ -void print_fsp_open(files_struct *fsp,connection_struct *conn,char *jobname) + +files_struct *print_fsp_open(connection_struct *conn,char *jobname) { int jobid; SMB_STRUCT_STAT sbuf; extern struct current_user current_user; + files_struct *fsp = file_new(); + + if(!fsp) + return NULL; jobid = print_job_start(SNUM(conn), jobname); - if (jobid == -1) return; + if (jobid == -1) { + file_free(fsp); + return NULL; + } /* setup a full fsp */ fsp->print_jobid = jobid; fsp->fd = print_job_fd(jobid); conn->vfs_ops.fstat(fsp->fd, &sbuf); - conn->num_files_open++; fsp->mode = sbuf.st_mode; fsp->inode = sbuf.st_ino; fsp->dev = sbuf.st_dev; @@ -893,6 +900,10 @@ void print_fsp_open(files_struct *fsp,connection_struct *conn,char *jobname) string_set(&fsp->fsp_name,print_job_fname(jobid)); fsp->wbmpx_ptr = NULL; fsp->wcp = NULL; + + conn->num_files_open++; + + return fsp; } /**************************************************************************** diff --git a/source3/rpc_server/srv_lsa.c b/source3/rpc_server/srv_lsa.c index 81e9b737ee..f5dd09d05e 100644 --- a/source3/rpc_server/srv_lsa.c +++ b/source3/rpc_server/srv_lsa.c @@ -512,8 +512,12 @@ static BOOL api_lsa_query_info(prs_struct *data, prs_struct *rdata) switch (q_i.info_class) { case 0x03: - fstrcpy(name, global_myworkgroup); - sid = &global_sam_sid; + if(lp_domain_logons()) { + fstrcpy(name, global_myworkgroup); + sid = &global_sam_sid; + } else { + *name = '\0'; + } break; case 0x05: fstrcpy(name, global_myname); diff --git a/source3/smbd/close.c b/source3/smbd/close.c index c4d323b1ba..ec28ff3540 100644 --- a/source3/smbd/close.c +++ b/source3/smbd/close.c @@ -65,7 +65,8 @@ static void check_magic(files_struct *fsp,connection_struct *conn) /**************************************************************************** Common code to close a file or a directory. ****************************************************************************/ -static void close_filestruct(files_struct *fsp) + +void close_filestruct(files_struct *fsp) { connection_struct *conn = fsp->conn; @@ -106,19 +107,15 @@ static int close_normal_file(files_struct *fsp, BOOL normal_close) return 0; } - if (lp_share_modes(SNUM(conn))) { - lock_share_entry_fsp(fsp); - del_share_mode(fsp); - } + lock_share_entry_fsp(fsp); + del_share_mode(fsp); + unlock_share_entry_fsp(fsp); if(EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) release_file_oplock(fsp); locking_close_file(fsp); - if (lp_share_modes(SNUM(conn))) - unlock_share_entry_fsp(fsp); - err = fd_close(conn, fsp); /* check for magic scripts */ diff --git a/source3/smbd/fileio.c b/source3/smbd/fileio.c index 5d8c3a9710..8f8f17563e 100644 --- a/source3/smbd/fileio.c +++ b/source3/smbd/fileio.c @@ -234,6 +234,7 @@ ssize_t write_file(files_struct *fsp, char *data, SMB_OFF_T pos, size_t n) /* Paranoia .... */ if (EXCLUSIVE_OPLOCK_TYPE(share_entry->op_type)) { DEBUG(0,("write_file: PANIC. share mode entry %d is an exlusive oplock !\n", i )); + unlock_share_entry(fsp->conn, fsp->dev, fsp->inode); abort(); } @@ -249,6 +250,7 @@ ssize_t write_file(files_struct *fsp, char *data, SMB_OFF_T pos, size_t n) /* Paranoia check... */ if(new_fsp == NULL) { DEBUG(0,("write_file: PANIC. share mode entry %d is not a local file !\n", i )); + unlock_share_entry(fsp->conn, fsp->dev, fsp->inode); abort(); } oplock_break_level2(new_fsp, True, token); diff --git a/source3/smbd/files.c b/source3/smbd/files.c index e971de095b..6c0465097b 100644 --- a/source3/smbd/files.c +++ b/source3/smbd/files.c @@ -77,11 +77,17 @@ files_struct *file_new(void ) } DEBUG(0,("ERROR! Out of file structures\n")); + unix_ERR_class = ERRSRV; + unix_ERR_code = ERRnofids; return NULL; } fsp = (files_struct *)malloc(sizeof(*fsp)); - if (!fsp) return NULL; + if (!fsp) { + unix_ERR_class = ERRSRV; + unix_ERR_code = ERRnofids; + return NULL; + } ZERO_STRUCTP(fsp); fsp->fd = -1; diff --git a/source3/smbd/nttrans.c b/source3/smbd/nttrans.c index bd77f17802..c82a8074d9 100644 --- a/source3/smbd/nttrans.c +++ b/source3/smbd/nttrans.c @@ -747,12 +747,6 @@ int reply_ntcreate_and_X(connection_struct *conn, unix_convert(fname,conn,0,&bad_path,NULL); - fsp = file_new(); - if (!fsp) { - restore_case_semantics(file_attributes); - return(ERROR(ERRSRV,ERRnofids)); - } - unixmode = unix_mode(conn,smb_attr | aARCH, fname); /* @@ -762,13 +756,11 @@ int reply_ntcreate_and_X(connection_struct *conn, if(create_options & FILE_DIRECTORY_FILE) { oplock_request = 0; - open_directory(fsp, conn, fname, smb_ofun, - unixmode, &smb_action); + fsp = open_directory(conn, fname, smb_ofun, unixmode, &smb_action); restore_case_semantics(file_attributes); - if(!fsp->open) { - file_free(fsp); + if(!fsp) { return(UNIXERROR(ERRDOS,ERRnoaccess)); } } else { @@ -789,10 +781,10 @@ int reply_ntcreate_and_X(connection_struct *conn, * before issuing an oplock break request to * our client. JRA. */ - open_file_shared(fsp,conn,fname,smb_open_mode, + fsp = open_file_shared(conn,fname,smb_open_mode, smb_ofun,unixmode, oplock_request,&rmode,&smb_action); - if (!fsp->open) { + if (!fsp) { /* We cheat here. There are two cases we * care about. One is a directory rename, * where the NT client will attempt to @@ -819,17 +811,15 @@ int reply_ntcreate_and_X(connection_struct *conn, */ if (create_options & FILE_NON_DIRECTORY_FILE) { - file_free(fsp); restore_case_semantics(file_attributes); SSVAL(outbuf, smb_flg2, FLAGS2_32_BIT_ERROR_CODES); return(ERROR(0, 0xc0000000|NT_STATUS_FILE_IS_A_DIRECTORY)); } oplock_request = 0; - open_directory(fsp, conn, fname, smb_ofun, unixmode, &smb_action); + fsp = open_directory(conn, fname, smb_ofun, unixmode, &smb_action); - if(!fsp->open) { - file_free(fsp); + if(!fsp) { restore_case_semantics(file_attributes); return(UNIXERROR(ERRDOS,ERRnoaccess)); } @@ -845,10 +835,9 @@ int reply_ntcreate_and_X(connection_struct *conn, oplock_request = 0; - open_file_stat(fsp,conn,fname,smb_open_mode,&sbuf,&smb_action); + fsp = open_file_stat(conn,fname,smb_open_mode,&sbuf,&smb_action); - if(!fsp->open) { - file_free(fsp); + if(!fsp) { restore_case_semantics(file_attributes); return(UNIXERROR(ERRDOS,ERRnoaccess)); } @@ -860,8 +849,6 @@ int reply_ntcreate_and_X(connection_struct *conn, unix_ERR_code = ERRbadpath; } - file_free(fsp); - restore_case_semantics(file_attributes); return(UNIXERROR(ERRDOS,ERRnoaccess)); @@ -1109,12 +1096,6 @@ static int call_nt_transact_create(connection_struct *conn, unix_convert(fname,conn,0,&bad_path,NULL); - fsp = file_new(); - if (!fsp) { - restore_case_semantics(file_attributes); - return(ERROR(ERRSRV,ERRnofids)); - } - unixmode = unix_mode(conn,smb_attr | aARCH, fname); /* @@ -1131,10 +1112,9 @@ static int call_nt_transact_create(connection_struct *conn, * CreateDirectory() call. */ - open_directory(fsp, conn, fname, smb_ofun, unixmode, &smb_action); + fsp = open_directory(conn, fname, smb_ofun, unixmode, &smb_action); - if(!fsp->open) { - file_free(fsp); + if(!fsp) { restore_case_semantics(file_attributes); return(UNIXERROR(ERRDOS,ERRnoaccess)); } @@ -1152,10 +1132,10 @@ static int call_nt_transact_create(connection_struct *conn, * Ordinary file case. */ - open_file_shared(fsp,conn,fname,smb_open_mode,smb_ofun,unixmode, + fsp = open_file_shared(conn,fname,smb_open_mode,smb_ofun,unixmode, oplock_request,&rmode,&smb_action); - if (!fsp->open) { + if (!fsp) { if(errno == EISDIR) { @@ -1164,17 +1144,15 @@ static int call_nt_transact_create(connection_struct *conn, */ if (create_options & FILE_NON_DIRECTORY_FILE) { - file_free(fsp); restore_case_semantics(file_attributes); SSVAL(outbuf, smb_flg2, FLAGS2_32_BIT_ERROR_CODES); return(ERROR(0, 0xc0000000|NT_STATUS_FILE_IS_A_DIRECTORY)); } oplock_request = 0; - open_directory(fsp, conn, fname, smb_ofun, unixmode, &smb_action); + fsp = open_directory(conn, fname, smb_ofun, unixmode, &smb_action); - if(!fsp->open) { - file_free(fsp); + if(!fsp) { restore_case_semantics(file_attributes); return(UNIXERROR(ERRDOS,ERRnoaccess)); } @@ -1191,10 +1169,9 @@ static int call_nt_transact_create(connection_struct *conn, oplock_request = 0; - open_file_stat(fsp,conn,fname,smb_open_mode,&sbuf,&smb_action); + fsp = open_file_stat(conn,fname,smb_open_mode,&sbuf,&smb_action); - if(!fsp->open) { - file_free(fsp); + if(!fsp) { restore_case_semantics(file_attributes); return(UNIXERROR(ERRDOS,ERRnoaccess)); } @@ -1204,7 +1181,6 @@ static int call_nt_transact_create(connection_struct *conn, unix_ERR_class = ERRDOS; unix_ERR_code = ERRbadpath; } - file_free(fsp); restore_case_semantics(file_attributes); diff --git a/source3/smbd/open.c b/source3/smbd/open.c index bd8e860a17..d2368aa44d 100644 --- a/source3/smbd/open.c +++ b/source3/smbd/open.c @@ -82,7 +82,7 @@ static void check_for_pipe(char *fname) Open a file. ****************************************************************************/ -static void open_file(files_struct *fsp,connection_struct *conn, +static BOOL open_file(files_struct *fsp,connection_struct *conn, char *fname1,int flags,mode_t mode) { extern struct current_user current_user; @@ -114,7 +114,7 @@ static void open_file(files_struct *fsp,connection_struct *conn, if(accmode != O_RDONLY) { DEBUG(3,("Permission denied opening %s\n",fname)); check_for_pipe(fname); - return; + return False; } 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 access into the @@ -131,7 +131,7 @@ static void open_file(files_struct *fsp,connection_struct *conn, DEBUG(3,("Error opening file %s (%s) (flags=%d)\n", fname,strerror(errno),flags)); check_for_pipe(fname); - return; + return False; } conn->vfs_ops.fstat(fsp->fd, &sbuf); @@ -145,10 +145,9 @@ static void open_file(files_struct *fsp,connection_struct *conn, if(S_ISDIR(sbuf.st_mode)) { fd_close(conn, fsp); errno = EISDIR; - return; + return False; } - conn->num_files_open++; fsp->mode = sbuf.st_mode; fsp->inode = sbuf.st_ino; fsp->dev = sbuf.st_dev; @@ -184,7 +183,9 @@ static void open_file(files_struct *fsp,connection_struct *conn, DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n", *sesssetup_user ? sesssetup_user : conn->user,fsp->fsp_name, BOOLSTR(fsp->can_read), BOOLSTR(fsp->can_write), - conn->num_files_open)); + conn->num_files_open + 1)); + + return True; } /**************************************************************************** @@ -193,35 +194,27 @@ static void open_file(files_struct *fsp,connection_struct *conn, Truncate a file after checking locking; close file if locked. **************************************************************************/ -static void truncate_unless_locked(files_struct *fsp, connection_struct *conn, int token, - BOOL *share_locked) +static int truncate_unless_locked(struct connection_struct *conn, files_struct *fsp) { - if (fsp->can_write){ - SMB_OFF_T mask2 = ((SMB_OFF_T)0x3) << (SMB_OFF_T_BITS-4); - SMB_OFF_T mask = (mask2<<2); - - if (is_locked(fsp,conn,~mask,0,WRITE_LOCK)){ - /* If share modes are in force for this connection we - have the share entry locked. Unlock it before closing. */ - if (*share_locked && lp_share_modes(SNUM(conn))) - unlock_share_entry_fsp(fsp); - close_file(fsp,False); - /* Share mode no longer locked. */ - *share_locked = False; - errno = EACCES; - unix_ERR_class = ERRDOS; - unix_ERR_code = ERRlock; - } else { - sys_ftruncate(fsp->fd,0); - } + SMB_BIG_UINT mask = (SMB_BIG_UINT)-1; + + if (!fsp->can_write) + return -1; + + if (is_locked(fsp,fsp->conn,mask,0,WRITE_LOCK)){ + errno = EACCES; + unix_ERR_class = ERRDOS; + unix_ERR_code = ERRlock; + return -1; + } else { + return conn->vfs_ops.ftruncate(fsp->fd,0); } } - /******************************************************************* return True if the filename is one of the special executable types ********************************************************************/ -static BOOL is_executable(char *fname) +static BOOL is_executable(const char *fname) { if ((fname = strrchr(fname,'.'))) { if (strequal(fname,".com") || @@ -334,364 +327,426 @@ check if we can open a file with a share mode ****************************************************************************/ static int check_share_mode( share_mode_entry *share, int deny_mode, - char *fname, - BOOL fcbopen, int *flags) + const char *fname, BOOL fcbopen, int *flags) { - int old_open_mode = GET_OPEN_MODE(share->share_mode); - int old_deny_mode = GET_DENY_MODE(share->share_mode); + int old_open_mode = GET_OPEN_MODE(share->share_mode); + int old_deny_mode = GET_DENY_MODE(share->share_mode); + + /* + * Don't allow any open once the delete on close flag has been + * set. + */ + + if(GET_DELETE_ON_CLOSE_FLAG(share->share_mode)) { + DEBUG(5,("check_share_mode: Failing open on file %s as delete on close flag is set.\n", + fname )); + unix_ERR_class = ERRDOS; + unix_ERR_code = ERRnoaccess; + return False; + } + + { + int access_allowed = access_table(deny_mode,old_deny_mode,old_open_mode, + (share->pid == getpid()),is_executable(fname)); + + if ((access_allowed == AFAIL) || + (!fcbopen && (access_allowed == AREAD && *flags == O_RDWR)) || + (access_allowed == AREAD && *flags != O_RDONLY) || + (access_allowed == AWRITE && *flags != O_WRONLY)) { + + DEBUG(2,("Share violation on file (%d,%d,%d,%d,%s,fcbopen = %d, flags = %d) = %d\n", + deny_mode,old_deny_mode,old_open_mode, + (int)share->pid,fname, fcbopen, *flags, access_allowed)); + + unix_ERR_class = ERRDOS; + unix_ERR_code = ERRbadshare; + + return False; + } + + if (access_allowed == AREAD) + *flags = O_RDONLY; + + if (access_allowed == AWRITE) + *flags = O_WRONLY; + + } + + return True; +} + +/**************************************************************************** + Deal with open deny mode and oplock break processing. + 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, int share_mode, int *p_flags, int *p_oplock_request, + BOOL *p_all_current_opens_are_level_II) +{ + int i; + int num_share_modes; + int oplock_contention_count = 0; + share_mode_entry *old_shares = 0; + BOOL fcbopen = False; + int deny_mode = GET_DENY_MODE(share_mode); + 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) + return 0; /* - * Don't allow any open once the delete on close flag has been - * set. + * Check if the share modes will give us access. */ - if(GET_DELETE_ON_CLOSE_FLAG(share->share_mode)) - { - DEBUG(5,("check_share_mode: Failing open on file %s as delete on close flag is set.\n", - fname )); - unix_ERR_class = ERRDOS; - unix_ERR_code = ERRnoaccess; - return False; - } + do { - { - int access_allowed = access_table(deny_mode,old_deny_mode,old_open_mode, - (share->pid == getpid()),is_executable(fname)); + broke_oplock = False; + *p_all_current_opens_are_level_II = True; - if ((access_allowed == AFAIL) || - (!fcbopen && (access_allowed == AREAD && *flags == O_RDWR)) || - (access_allowed == AREAD && *flags != O_RDONLY) || - (access_allowed == AWRITE && *flags != O_WRONLY)) - { - DEBUG(2,("Share violation on file (%d,%d,%d,%d,%s,fcbopen = %d, flags = %d) = %d\n", - deny_mode,old_deny_mode,old_open_mode, - (int)share->pid,fname, fcbopen, *flags, access_allowed)); + for(i = 0; i < num_share_modes; i++) { + share_mode_entry *share_entry = &old_shares[i]; + + /* + * 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. + */ - unix_ERR_class = ERRDOS; - unix_ERR_code = ERRbadshare; + if((*p_oplock_request && EXCLUSIVE_OPLOCK_TYPE(share_entry->op_type)) || + (!*p_oplock_request && (share_entry->op_type != NO_OPLOCK))) { - return False; + BOOL opb_ret; + + DEBUG(5,("open_mode_check: breaking oplock (%x) on file %s, \ +dev = %x, inode = %.0f\n", share_entry->op_type, fname, (unsigned int)dev, (double)inode)); + + /* Oplock break - unlock to request it. */ + unlock_share_entry(conn, dev, inode); + + opb_ret = request_oplock_break(share_entry, dev, inode); + + /* Now relock. */ + lock_share_entry(conn, dev, inode); + + if(opb_ret == False) { + free((char *)old_shares); + 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)); + errno = EACCES; + unix_ERR_class = ERRDOS; + unix_ERR_code = ERRbadshare; + return -1; + } + + broke_oplock = True; + *p_all_current_opens_are_level_II = False; + break; + + } else if (!LEVEL_II_OPLOCK_TYPE(share_entry->op_type)) { + *p_all_current_opens_are_level_II = False; + } + + /* someone else has a share lock on it, check to see + if we can too */ + + if(check_share_mode(share_entry, deny_mode, fname, fcbopen, p_flags) == False) { + free((char *)old_shares); + errno = EACCES; + return -1; + } + + } /* end for */ + + if(broke_oplock) { + free((char *)old_shares); + num_share_modes = get_share_modes(conn, dev, inode, &old_shares); + oplock_contention_count++; } + } while(broke_oplock); - if (access_allowed == AREAD) - *flags = O_RDONLY; + if(old_shares != 0) + free((char *)old_shares); - if (access_allowed == AWRITE) - *flags = O_WRONLY; + /* + * 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 )); } - return True; + return num_share_modes; } /**************************************************************************** -open a file with a share mode + Open a file with a share mode. ****************************************************************************/ -void open_file_shared(files_struct *fsp,connection_struct *conn,char *fname,int share_mode,int ofun, +files_struct *open_file_shared(connection_struct *conn,char *fname,int share_mode,int ofun, mode_t mode,int oplock_request, int *Access,int *action) { - int flags=0; - int flags2=0; - int deny_mode = GET_DENY_MODE(share_mode); - BOOL allow_share_delete = GET_ALLOW_SHARE_DELETE(share_mode); - SMB_STRUCT_STAT sbuf; - BOOL file_existed = vfs_file_exist(conn, fname, &sbuf); - BOOL share_locked = False; - BOOL fcbopen = False; - int token = 0; - SMB_DEV_T dev = 0; - SMB_INO_T inode = 0; - int num_share_modes = 0; - int oplock_contention_count = 0; - BOOL all_current_opens_are_level_II = False; - fsp->open = False; - fsp->fd = -1; - - if (conn->printer) { - /* printers are handled completely differently. Most of the passed parameters are - ignored */ - *Access = DOS_OPEN_WRONLY; - *action = FILE_WAS_CREATED; - print_fsp_open(fsp, conn, fname); - return; - } + int flags=0; + int flags2=0; + int deny_mode = GET_DENY_MODE(share_mode); + BOOL allow_share_delete = GET_ALLOW_SHARE_DELETE(share_mode); + SMB_STRUCT_STAT sbuf; + BOOL file_existed = vfs_file_exist(conn, fname, &sbuf); + BOOL fcbopen = False; + SMB_DEV_T dev = 0; + SMB_INO_T inode = 0; + int num_share_modes = 0; + BOOL all_current_opens_are_level_II = False; + files_struct *fsp = NULL; + int open_mode=0; + uint16 port = 0; + + if (conn->printer) { + /* printers are handled completely differently. Most of the passed parameters are + ignored */ + *Access = DOS_OPEN_WRONLY; + *action = FILE_WAS_CREATED; + return print_fsp_open(conn, fname); + } - 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 )); + fsp = file_new(); + if(!fsp) + return NULL; - if (!check_name(fname,conn)) { - return; - } + fsp->open = False; + fsp->fd = -1; - /* ignore any oplock requests if oplocks are disabled */ - if (!lp_oplocks(SNUM(conn)) || global_client_failed_oplock_break) { - oplock_request = 0; - } + DEBUG(10,("open_file_shared: fname = %s, share_mode = %x, ofun = %x, mode = %o, oplock request = %d\n", + fname, share_mode, ofun, (int)mode, oplock_request )); - /* this is for OS/2 EAs - try and say we don't support them */ - if (strstr(fname,".+,;=[].")) - { - unix_ERR_class = ERRDOS; - /* OS/2 Workplace shell fix may be main code stream in a later release. */ + if (!check_name(fname,conn)) { + file_free(fsp); + return NULL; + } + + /* ignore any oplock requests if oplocks are disabled */ + if (!lp_oplocks(SNUM(conn)) || global_client_failed_oplock_break) { + oplock_request = 0; + } + + /* this is for OS/2 EAs - try and say we don't support them */ + if (strstr(fname,".+,;=[].")) { + unix_ERR_class = ERRDOS; + /* OS/2 Workplace shell fix may be main code stream in a later release. */ #if 1 /* OS2_WPS_FIX - Recent versions of OS/2 need this. */ - unix_ERR_code = ERRcannotopen; + unix_ERR_code = ERRcannotopen; #else /* OS2_WPS_FIX */ - unix_ERR_code = ERROR_EAS_NOT_SUPPORTED; + unix_ERR_code = ERROR_EAS_NOT_SUPPORTED; #endif /* OS2_WPS_FIX */ - DEBUG(5,("open_file_shared: OS/2 EA's are not supported.\n")); - return; - } + DEBUG(5,("open_file_shared: OS/2 EA's are not supported.\n")); + file_free(fsp); + return NULL; + } - if ((GET_FILE_OPEN_DISPOSITION(ofun) == FILE_EXISTS_FAIL) && file_existed) - { - DEBUG(5,("open_file_shared: create new requested for file %s and file already exists.\n", - fname )); - errno = EEXIST; - return; - } + if ((GET_FILE_OPEN_DISPOSITION(ofun) == FILE_EXISTS_FAIL) && file_existed) { + DEBUG(5,("open_file_shared: create new requested for file %s and file already exists.\n", + fname )); + file_free(fsp); + errno = EEXIST; + return NULL; + } - if (GET_FILE_CREATE_DISPOSITION(ofun) == FILE_CREATE_IF_NOT_EXIST) - flags2 |= O_CREAT; - - if (GET_FILE_OPEN_DISPOSITION(ofun) == FILE_EXISTS_TRUNCATE) - flags2 |= O_TRUNC; - - if (GET_FILE_OPEN_DISPOSITION(ofun) == FILE_EXISTS_FAIL) - flags2 |= O_EXCL; - - /* note that we ignore the append flag as - append does not mean the same thing under dos and unix */ - - switch (GET_OPEN_MODE(share_mode)) - { - case DOS_OPEN_WRONLY: - flags = O_WRONLY; - break; - case DOS_OPEN_FCB: - fcbopen = True; - flags = O_RDWR; - break; - case DOS_OPEN_RDWR: - flags = O_RDWR; - break; - default: - flags = O_RDONLY; - break; - } + if (GET_FILE_CREATE_DISPOSITION(ofun) == FILE_CREATE_IF_NOT_EXIST) + flags2 |= O_CREAT; + + if (GET_FILE_OPEN_DISPOSITION(ofun) == FILE_EXISTS_TRUNCATE) + flags2 |= O_TRUNC; + + if (GET_FILE_OPEN_DISPOSITION(ofun) == FILE_EXISTS_FAIL) + flags2 |= O_EXCL; + + /* note that we ignore the append flag as + append does not mean the same thing under dos and unix */ + + switch (GET_OPEN_MODE(share_mode)) { + case DOS_OPEN_WRONLY: + flags = O_WRONLY; + break; + case DOS_OPEN_FCB: + fcbopen = True; + flags = O_RDWR; + break; + case DOS_OPEN_RDWR: + flags = O_RDWR; + break; + default: + flags = O_RDONLY; + break; + } #if defined(O_SYNC) - if (GET_FILE_SYNC_OPENMODE(share_mode)) { - flags2 |= O_SYNC; - } + if (GET_FILE_SYNC_OPENMODE(share_mode)) { + flags2 |= O_SYNC; + } #endif /* O_SYNC */ - if (flags != O_RDONLY && file_existed && - (!CAN_WRITE(conn) || IS_DOS_READONLY(dos_mode(conn,fname,&sbuf)))) - { - if (!fcbopen) - { - DEBUG(5,("open_file_shared: read/write access requested for file %s on read only %s\n", - fname, !CAN_WRITE(conn) ? "share" : "file" )); - errno = EACCES; - return; - } - flags = O_RDONLY; - } - - if (deny_mode > DENY_NONE && deny_mode!=DENY_FCB) - { - DEBUG(2,("Invalid deny mode %d on file %s\n",deny_mode,fname)); - errno = EINVAL; - return; - } - - if (lp_share_modes(SNUM(conn))) - { - int i; - share_mode_entry *old_shares = 0; - - if (file_existed) - { - dev = sbuf.st_dev; - inode = sbuf.st_ino; - lock_share_entry(conn, dev, inode); - share_locked = True; - num_share_modes = get_share_modes(conn, dev, inode, &old_shares); - } + if (flags != O_RDONLY && file_existed && + (!CAN_WRITE(conn) || IS_DOS_READONLY(dos_mode(conn,fname,&sbuf)))) { + 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" )); + file_free(fsp); + errno = EACCES; + return NULL; + } + flags = O_RDONLY; + } - /* - * Check if the share modes will give us access. - */ + if (deny_mode > DENY_NONE && deny_mode!=DENY_FCB) { + DEBUG(2,("Invalid deny mode %d on file %s\n",deny_mode,fname)); + file_free(fsp); + errno = EINVAL; + return NULL; + } - if(share_locked && (num_share_modes != 0)) - { - BOOL broke_oplock; + if (file_existed) { + dev = sbuf.st_dev; + inode = sbuf.st_ino; - do - { + lock_share_entry(conn, dev, inode); - broke_oplock = False; - all_current_opens_are_level_II = True; + num_share_modes = open_mode_check(conn, fname, dev, inode, share_mode, + &flags, &oplock_request, &all_current_opens_are_level_II); + if(num_share_modes == -1) { + unlock_share_entry(conn, dev, inode); + file_free(fsp); + return NULL; + } - for(i = 0; i < num_share_modes; i++) - { - share_mode_entry *share_entry = &old_shares[i]; - - /* - * 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((oplock_request && EXCLUSIVE_OPLOCK_TYPE(share_entry->op_type)) || - (!oplock_request && (share_entry->op_type != NO_OPLOCK))) - { + /* + * We exit this block with the share entry *locked*..... + */ + } - DEBUG(5,("open_file_shared: breaking oplock (%x) on file %s, \ -dev = %x, inode = %.0f\n", share_entry->op_type, fname, (unsigned int)dev, (double)inode)); + DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o\n", + flags,flags2,(int)mode)); - /* Oplock break.... */ - unlock_share_entry(conn, dev, inode); - if(request_oplock_break(share_entry, dev, inode) == False) - { - free((char *)old_shares); + fsp->open = open_file(fsp,conn,fname,flags|(flags2&~(O_TRUNC)),mode); - DEBUG(0,("open_file_shared: FAILED when breaking oplock (%x) on file %s, \ -dev = %x, inode = %.0f\n", old_shares[i].op_type, fname, (unsigned int)dev, (double)inode)); + if (!fsp->open && (flags == O_RDWR) && (errno != ENOENT) && fcbopen) { + if((fsp->open = open_file(fsp,conn,fname,O_RDONLY,mode)) == True) + flags = O_RDONLY; + } - errno = EACCES; - unix_ERR_class = ERRDOS; - unix_ERR_code = ERRbadshare; - return; - } - lock_share_entry(conn, dev, inode); - broke_oplock = True; - all_current_opens_are_level_II = False; - break; - } else if (!LEVEL_II_OPLOCK_TYPE(share_entry->op_type)) { - all_current_opens_are_level_II = False; - } + if (!fsp->open) { + if(file_existed) + unlock_share_entry(conn, dev, inode); + file_free(fsp); + return NULL; + } - /* someone else has a share lock on it, check to see - if we can too */ - if(check_share_mode(share_entry, deny_mode, fname, fcbopen, &flags) == False) - { - free((char *)old_shares); - unlock_share_entry(conn, dev, inode); - errno = EACCES; - return; - } + /* + * 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. + */ - } /* end for */ + if (!file_existed) { - if(broke_oplock) - { - free((char *)old_shares); - num_share_modes = get_share_modes(conn, dev, inode, &old_shares); - oplock_contention_count++; - } - } while(broke_oplock); - } + lock_share_entry_fsp(fsp); - if(old_shares != 0) - free((char *)old_shares); - } + num_share_modes = open_mode_check(conn, fname, dev, inode, share_mode, + &flags, &oplock_request, &all_current_opens_are_level_II); - /* - * Refuse to grant an oplock in case the contention limit is - * reached when going through the lock list multiple times. - */ + if(num_share_modes == -1) { + unlock_share_entry_fsp(fsp); + fd_close(conn,fsp); + file_free(fsp); + return NULL; + } - if(oplock_contention_count >= lp_oplock_contention_limit(SNUM(conn))) - { - oplock_request = 0; - DEBUG(4,("open_file_shared: oplock contention = %d. Not granting oplock.\n", - oplock_contention_count )); - } + /* + * We exit this block with the share entry *locked*..... + */ + } - DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o\n", - flags,flags2,(int)mode)); + /* + * At this point onwards, we can guarentee that the share entry + * is locked, whether we created the file or not, and that the + * deny mode is compatible with all current opens. + */ - open_file(fsp,conn,fname,flags|(flags2&~(O_TRUNC)),mode); - if (!fsp->open && flags==O_RDWR && errno != ENOENT && fcbopen) { - flags = O_RDONLY; - open_file(fsp,conn,fname,flags,mode); - } + /* + * If requested, truncate the file. + */ - if (fsp->open) - { - int open_mode=0; + if ((flags2&O_TRUNC) && (truncate_unless_locked(conn,fsp) == -1)) { + unlock_share_entry_fsp(fsp); + fd_close(conn,fsp); + file_free(fsp); + return NULL; + } - if((share_locked == False) && lp_share_modes(SNUM(conn))) - { - /* We created the file - thus we must now lock the share entry before creating it. */ - lock_share_entry_fsp(fsp); - share_locked = True; - } + switch (flags) { + case O_RDONLY: + open_mode = DOS_OPEN_RDONLY; + break; + case O_RDWR: + open_mode = DOS_OPEN_RDWR; + break; + case O_WRONLY: + open_mode = DOS_OPEN_WRONLY; + break; + } - switch (flags) - { - case O_RDONLY: - open_mode = DOS_OPEN_RDONLY; - break; - case O_RDWR: - open_mode = DOS_OPEN_RDWR; - break; - case O_WRONLY: - open_mode = DOS_OPEN_WRONLY; - break; - } + fsp->share_mode = SET_DENY_MODE(deny_mode) | + SET_OPEN_MODE(open_mode) | + SET_ALLOW_SHARE_DELETE(allow_share_delete); - fsp->share_mode = SET_DENY_MODE(deny_mode) | - SET_OPEN_MODE(open_mode) | - SET_ALLOW_SHARE_DELETE(allow_share_delete); + if (Access) + (*Access) = open_mode; - if (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; + } - 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; - } - /* 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(conn))) - { - uint16 port = 0; + /* + * Setup the oplock info in both the shared memory and + * file structs. + */ - /* - * Setup the oplock info in both the shared memory and - * 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(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; - } + set_share_mode(fsp, port, oplock_request); - set_share_mode(fsp, port, oplock_request); - } + unlock_share_entry_fsp(fsp); - if ((flags2&O_TRUNC) && file_existed) - truncate_unless_locked(fsp,conn,token,&share_locked); - } + conn->num_files_open++; - if (share_locked && lp_share_modes(SNUM(conn))) - unlock_share_entry_fsp(fsp); + return fsp; } /**************************************************************************** @@ -699,20 +754,26 @@ dev = %x, inode = %.0f\n", old_shares[i].op_type, fname, (unsigned int)dev, (dou with the 'stat_open' flag set ****************************************************************************/ -int open_file_stat(files_struct *fsp,connection_struct *conn, +files_struct *open_file_stat(connection_struct *conn, char *fname, int smb_ofun, SMB_STRUCT_STAT *pst, int *action) { extern struct current_user current_user; + files_struct *fsp = file_new(); + + if(!fsp) + return NULL; if(conn->vfs_ops.stat(dos_to_unix(fname, False), pst) < 0) { DEBUG(0,("open_file_stat: unable to stat name = %s. Error was %s\n", fname, strerror(errno) )); - return -1; + file_free(fsp); + return NULL; } if(S_ISDIR(pst->st_mode)) { DEBUG(0,("open_file_stat: %s is a directory !\n", fname )); - return -1; + file_free(fsp); + return NULL; } *action = FILE_WAS_OPENED; @@ -724,7 +785,6 @@ int open_file_stat(files_struct *fsp,connection_struct *conn, */ fsp->fd = -1; - conn->num_files_open++; fsp->mode = 0; GetTimeOfDay(&fsp->open_time); fsp->vuid = current_user.vuid; @@ -755,27 +815,34 @@ int open_file_stat(files_struct *fsp,connection_struct *conn, fsp->wbmpx_ptr = NULL; fsp->wcp = NULL; /* Write cache pointer. */ - return 0; + conn->num_files_open++; + + return fsp; } /**************************************************************************** Open a directory from an NT SMB call. ****************************************************************************/ -int open_directory(files_struct *fsp,connection_struct *conn, +files_struct *open_directory(connection_struct *conn, char *fname, int smb_ofun, mode_t unixmode, int *action) { extern struct current_user current_user; SMB_STRUCT_STAT st; BOOL got_stat = False; + files_struct *fsp = file_new(); + + if(!fsp) + return NULL; if(conn->vfs_ops.stat(dos_to_unix(fname, False), &st) == 0) { got_stat = True; } if (got_stat && (GET_FILE_OPEN_DISPOSITION(smb_ofun) == FILE_EXISTS_FAIL)) { + file_free(fsp); errno = EEXIST; /* Setup so correct error is returned to client. */ - return -1; + return NULL; } if (GET_FILE_CREATE_DISPOSITION(smb_ofun) == FILE_CREATE_IF_NOT_EXIST) { @@ -784,8 +851,9 @@ int open_directory(files_struct *fsp,connection_struct *conn, if(!S_ISDIR(st.st_mode)) { DEBUG(0,("open_directory: %s is not a directory !\n", fname )); + file_free(fsp); errno = EACCES; - return -1; + return NULL; } *action = FILE_WAS_OPENED; @@ -797,15 +865,17 @@ int open_directory(files_struct *fsp,connection_struct *conn, if(!CAN_WRITE(conn)) { DEBUG(2,("open_directory: failing create on read-only share\n")); + file_free(fsp); errno = EACCES; - return -1; + return NULL; } if(conn->vfs_ops.mkdir(dos_to_unix(fname, False), unix_mode(conn,aDIR, fname)) < 0) { DEBUG(0,("open_directory: unable to create %s. Error was %s\n", fname, strerror(errno) )); - return -1; + file_free(fsp); + return NULL; } *action = FILE_WAS_CREATED; @@ -819,12 +889,14 @@ int open_directory(files_struct *fsp,connection_struct *conn, if(!got_stat) { DEBUG(0,("open_directory: unable to stat name = %s. Error was %s\n", fname, strerror(errno) )); - return -1; + file_free(fsp); + return NULL; } if(!S_ISDIR(st.st_mode)) { DEBUG(0,("open_directory: %s is not a directory !\n", fname )); - return -1; + file_free(fsp); + return NULL; } *action = FILE_WAS_OPENED; @@ -838,7 +910,6 @@ int open_directory(files_struct *fsp,connection_struct *conn, */ fsp->fd = -1; - conn->num_files_open++; fsp->mode = 0; GetTimeOfDay(&fsp->open_time); fsp->vuid = current_user.vuid; @@ -867,7 +938,9 @@ int open_directory(files_struct *fsp,connection_struct *conn, string_set(&fsp->fsp_name,fname); fsp->wbmpx_ptr = NULL; - return 0; + conn->num_files_open++; + + return fsp; } /******************************************************************* @@ -886,10 +959,8 @@ BOOL check_file_sharing(connection_struct *conn,char *fname, BOOL rename_op) SMB_DEV_T dev; SMB_INO_T inode; - if(!lp_share_modes(SNUM(conn))) - return True; - - if (conn->vfs_ops.stat(dos_to_unix(fname,False),&sbuf) == -1) return(True); + if (conn->vfs_ops.stat(dos_to_unix(fname,False),&sbuf) == -1) + return(True); dev = sbuf.st_dev; inode = sbuf.st_ino; diff --git a/source3/smbd/reply.c b/source3/smbd/reply.c index e998e1741c..3acfd988d6 100644 --- a/source3/smbd/reply.c +++ b/source3/smbd/reply.c @@ -1545,23 +1545,18 @@ int reply_open(connection_struct *conn, char *inbuf,char *outbuf, int dum_size, unix_convert(fname,conn,0,&bad_path,NULL); - fsp = file_new(); - if (!fsp) - return(ERROR(ERRSRV,ERRnofids)); - unixmode = unix_mode(conn,aARCH,fname); - open_file_shared(fsp,conn,fname,share_mode,(FILE_FAIL_IF_NOT_EXIST|FILE_EXISTS_OPEN), + fsp = open_file_shared(conn,fname,share_mode,(FILE_FAIL_IF_NOT_EXIST|FILE_EXISTS_OPEN), unixmode, oplock_request,&rmode,NULL); - if (!fsp->open) + if (!fsp) { if((errno == ENOENT) && bad_path) { unix_ERR_class = ERRDOS; unix_ERR_code = ERRbadpath; } - file_free(fsp); return(UNIXERROR(ERRDOS,ERRnoaccess)); } @@ -1639,23 +1634,18 @@ int reply_open_and_X(connection_struct *conn, char *inbuf,char *outbuf,int lengt unix_convert(fname,conn,0,&bad_path,NULL); - fsp = file_new(); - if (!fsp) - return(ERROR(ERRSRV,ERRnofids)); - unixmode = unix_mode(conn,smb_attr | aARCH, fname); - open_file_shared(fsp,conn,fname,smb_mode,smb_ofun,unixmode, + fsp = open_file_shared(conn,fname,smb_mode,smb_ofun,unixmode, oplock_request, &rmode,&smb_action); - if (!fsp->open) + if (!fsp) { if((errno == ENOENT) && bad_path) { unix_ERR_class = ERRDOS; unix_ERR_code = ERRbadpath; } - file_free(fsp); return(UNIXERROR(ERRDOS,ERRnoaccess)); } @@ -1772,10 +1762,6 @@ int reply_mknew(connection_struct *conn, char *inbuf,char *outbuf, int dum_size, unixmode = unix_mode(conn,createmode,fname); - fsp = file_new(); - if (!fsp) - return(ERROR(ERRSRV,ERRnofids)); - if(com == SMBmknew) { /* We should fail if file exists. */ @@ -1788,17 +1774,16 @@ int reply_mknew(connection_struct *conn, char *inbuf,char *outbuf, int dum_size, } /* Open file in dos compatibility share mode. */ - open_file_shared(fsp,conn,fname,SET_DENY_MODE(DENY_FCB)|SET_OPEN_MODE(DOS_OPEN_FCB), + fsp = open_file_shared(conn,fname,SET_DENY_MODE(DENY_FCB)|SET_OPEN_MODE(DOS_OPEN_FCB), ofun, unixmode, oplock_request, NULL, NULL); - if (!fsp->open) + if (!fsp) { if((errno == ENOENT) && bad_path) { unix_ERR_class = ERRDOS; unix_ERR_code = ERRbadpath; } - file_free(fsp); return(UNIXERROR(ERRDOS,ERRnoaccess)); } @@ -1844,25 +1829,20 @@ int reply_ctemp(connection_struct *conn, char *inbuf,char *outbuf, int dum_size, unixmode = unix_mode(conn,createmode,fname); - fsp = file_new(); - if (fsp) - return(ERROR(ERRSRV,ERRnofids)); - pstrcpy(fname2,(char *)smbd_mktemp(fname)); /* Open file in dos compatibility share mode. */ /* We should fail if file exists. */ - open_file_shared(fsp,conn,fname2,SET_DENY_MODE(DENY_FCB)|SET_OPEN_MODE(DOS_OPEN_FCB), + fsp = open_file_shared(conn,fname2,SET_DENY_MODE(DENY_FCB)|SET_OPEN_MODE(DOS_OPEN_FCB), (FILE_CREATE_IF_NOT_EXIST|FILE_EXISTS_FAIL), unixmode, oplock_request, NULL, NULL); - if (!fsp->open) + if (!fsp) { if((errno == ENOENT) && bad_path) { unix_ERR_class = ERRDOS; unix_ERR_code = ERRbadpath; } - file_free(fsp); return(UNIXERROR(ERRDOS,ERRnoaccess)); } @@ -3025,15 +3005,10 @@ int reply_printopen(connection_struct *conn, if (!CAN_PRINT(conn)) return(ERROR(ERRDOS,ERRnoaccess)); - fsp = file_new(); - if (!fsp) - return(ERROR(ERRSRV,ERRnofids)); - /* Open for exclusive use, write only. */ - print_fsp_open(fsp,conn,"dos.prn"); + fsp = print_fsp_open(conn,"dos.prn"); - if (!fsp->open) { - file_free(fsp); + if (!fsp) { return(UNIXERROR(ERRDOS,ERRnoaccess)); } @@ -3745,32 +3720,21 @@ static BOOL copy_file(char *src,char *dest1,connection_struct *conn, int ofun, if (!vfs_file_exist(conn,src,&st)) return(False); - fsp1 = file_new(); - if (!fsp1) - return(False); - - open_file_shared(fsp1,conn,src,SET_DENY_MODE(DENY_NONE)|SET_OPEN_MODE(DOS_OPEN_RDONLY), + fsp1 = open_file_shared(conn,src,SET_DENY_MODE(DENY_NONE)|SET_OPEN_MODE(DOS_OPEN_RDONLY), (FILE_FAIL_IF_NOT_EXIST|FILE_EXISTS_OPEN),0,0,&Access,&action); - if (!fsp1->open) { - file_free(fsp1); + if (!fsp1) { return(False); } if (!target_is_directory && count) ofun = 1; - fsp2 = file_new(); - if (!fsp2) { - close_file(fsp1,False); - return(False); - } - open_file_shared(fsp2,conn,dest,SET_DENY_MODE(DENY_NONE)|SET_OPEN_MODE(DOS_OPEN_WRONLY), + fsp2 = open_file_shared(conn,dest,SET_DENY_MODE(DENY_NONE)|SET_OPEN_MODE(DOS_OPEN_WRONLY), ofun,st.st_mode,0,&Access,&action); - if (!fsp2->open) { + if (!fsp2) { close_file(fsp1,False); - file_free(fsp2); return(False); } diff --git a/source3/smbd/trans2.c b/source3/smbd/trans2.c index 2ca06ab746..f0a645d6c7 100644 --- a/source3/smbd/trans2.c +++ b/source3/smbd/trans2.c @@ -221,10 +221,6 @@ static int call_trans2open(connection_struct *conn, char *inbuf, char *outbuf, unix_convert(fname,conn,0,&bad_path,NULL); - fsp = file_new(); - if (!fsp) - return(ERROR(ERRSRV,ERRnofids)); - if (!check_name(fname,conn)) { if((errno == ENOENT) && bad_path) @@ -232,23 +228,21 @@ static int call_trans2open(connection_struct *conn, char *inbuf, char *outbuf, unix_ERR_class = ERRDOS; unix_ERR_code = ERRbadpath; } - file_free(fsp); return(UNIXERROR(ERRDOS,ERRnoaccess)); } unixmode = unix_mode(conn,open_attr | aARCH, fname); - open_file_shared(fsp,conn,fname,open_mode,open_ofun,unixmode, + fsp = open_file_shared(conn,fname,open_mode,open_ofun,unixmode, oplock_request, &rmode,&smb_action); - if (!fsp->open) + if (!fsp) { if((errno == ENOENT) && bad_path) { unix_ERR_class = ERRDOS; unix_ERR_code = ERRbadpath; } - file_free(fsp); return(UNIXERROR(ERRDOS,ERRnoaccess)); } @@ -1794,113 +1788,110 @@ static int call_trans2setfilepathinfo(connection_struct *conn, * the share mode contained ALLOW_SHARE_DELETE */ - if(lp_share_modes(SNUM(conn))) + if(!GET_ALLOW_SHARE_DELETE(fsp->share_mode)) + return(ERROR(ERRDOS,ERRnoaccess)); + + /* + * If the flag has been set then + * modify the share mode entry for all files we have open + * on this device and inode to tell other smbds we have + * changed the delete on close flag. + */ + + if(delete_on_close && !GET_DELETE_ON_CLOSE_FLAG(fsp->share_mode)) { - if(!GET_ALLOW_SHARE_DELETE(fsp->share_mode)) + int i; + files_struct *iterate_fsp; + SMB_DEV_T dev = fsp->dev; + SMB_INO_T inode = fsp->inode; + int num_share_modes; + share_mode_entry *current_shares = NULL; + + if (lock_share_entry_fsp(fsp) == False) return(ERROR(ERRDOS,ERRnoaccess)); /* - * If the flag has been set then - * modify the share mode entry for all files we have open - * on this device and inode to tell other smbds we have - * changed the delete on close flag. + * Before we allow this we need to ensure that all current opens + * on the file have the GET_ALLOW_SHARE_DELETE flag set. If they + * do not then we deny this (as we are essentially deleting the + * file at this point. */ - if(delete_on_close && !GET_DELETE_ON_CLOSE_FLAG(fsp->share_mode)) + num_share_modes = get_share_modes(conn, dev, inode, ¤t_shares); + for(i = 0; i < num_share_modes; i++) { - int i; - files_struct *iterate_fsp; - SMB_DEV_T dev = fsp->dev; - SMB_INO_T inode = fsp->inode; - int num_share_modes; - share_mode_entry *current_shares = NULL; - - if (lock_share_entry_fsp(fsp) == False) - return(ERROR(ERRDOS,ERRnoaccess)); - - /* - * Before we allow this we need to ensure that all current opens - * on the file have the GET_ALLOW_SHARE_DELETE flag set. If they - * do not then we deny this (as we are essentially deleting the - * file at this point. - */ - - num_share_modes = get_share_modes(conn, dev, inode, ¤t_shares); - for(i = 0; i < num_share_modes; i++) + if(!GET_ALLOW_SHARE_DELETE(current_shares[i].share_mode)) { - if(!GET_ALLOW_SHARE_DELETE(current_shares[i].share_mode)) - { - DEBUG(5,("call_trans2setfilepathinfo: refusing to set delete on close flag for fnum = %d, \ + DEBUG(5,("call_trans2setfilepathinfo: refusing to set delete on close flag for fnum = %d, \ file %s as a share exists that was not opened with FILE_DELETE access.\n", - fsp->fnum, fsp->fsp_name )); - /* - * Release the lock. - */ + fsp->fnum, fsp->fsp_name )); + /* + * Release the lock. + */ - unlock_share_entry_fsp(fsp); + unlock_share_entry_fsp(fsp); - /* - * current_shares was malloced by get_share_modes - free it here. - */ + /* + * current_shares was malloced by get_share_modes - free it here. + */ - free((char *)current_shares); + free((char *)current_shares); - /* - * Even though share violation would be more appropriate here, - * return ERRnoaccess as that's what NT does. - */ + /* + * Even though share violation would be more appropriate here, + * return ERRnoaccess as that's what NT does. + */ - return(ERROR(ERRDOS,ERRnoaccess)); - } + return(ERROR(ERRDOS,ERRnoaccess)); } + } - /* - * current_shares was malloced by get_share_modes - free it here. - */ + /* + * current_shares was malloced by get_share_modes - free it here. + */ - free((char *)current_shares); + free((char *)current_shares); - DEBUG(10,("call_trans2setfilepathinfo: %s delete on close flag for fnum = %d, file %s\n", - delete_on_close ? "Adding" : "Removing", fsp->fnum, fsp->fsp_name )); + DEBUG(10,("call_trans2setfilepathinfo: %s delete on close flag for fnum = %d, file %s\n", + delete_on_close ? "Adding" : "Removing", fsp->fnum, fsp->fsp_name )); - /* - * Go through all files we have open on the same device and - * inode (hanging off the same hash bucket) and set the DELETE_ON_CLOSE_FLAG. - * Other smbd's that have this file open will have to fend for themselves. We - * take care of this (rare) case in close_file(). See the comment there. - */ + /* + * Go through all files we have open on the same device and + * inode (hanging off the same hash bucket) and set the DELETE_ON_CLOSE_FLAG. + * Other smbd's that have this file open will have to fend for themselves. We + * take care of this (rare) case in close_file(). See the comment there. + */ - for(iterate_fsp = file_find_di_first(dev, inode); iterate_fsp; - iterate_fsp = file_find_di_next(iterate_fsp)) - { - int new_share_mode = (delete_on_close ? - (iterate_fsp->share_mode | DELETE_ON_CLOSE_FLAG) : - (iterate_fsp->share_mode & ~DELETE_ON_CLOSE_FLAG) ); + for(iterate_fsp = file_find_di_first(dev, inode); iterate_fsp; + iterate_fsp = file_find_di_next(iterate_fsp)) + { + int new_share_mode = (delete_on_close ? + (iterate_fsp->share_mode | DELETE_ON_CLOSE_FLAG) : + (iterate_fsp->share_mode & ~DELETE_ON_CLOSE_FLAG) ); - DEBUG(10,("call_trans2setfilepathinfo: Changing share mode for fnum %d, file %s \ + DEBUG(10,("call_trans2setfilepathinfo: Changing share mode for fnum %d, file %s \ dev = %x, inode = %.0f from %x to %x\n", - iterate_fsp->fnum, iterate_fsp->fsp_name, (unsigned int)dev, - (double)inode, iterate_fsp->share_mode, new_share_mode )); + iterate_fsp->fnum, iterate_fsp->fsp_name, (unsigned int)dev, + (double)inode, iterate_fsp->share_mode, new_share_mode )); - if(modify_share_mode(iterate_fsp, new_share_mode, iterate_fsp->oplock_type)==False) - DEBUG(0,("call_trans2setfilepathinfo: failed to change delete on close for fnum %d, \ + if(modify_share_mode(iterate_fsp, new_share_mode, iterate_fsp->oplock_type)==False) + DEBUG(0,("call_trans2setfilepathinfo: failed to change delete on close for fnum %d, \ dev = %x, inode = %.0f\n", iterate_fsp->fnum, (unsigned int)dev, (double)inode)); - } + } - /* - * Set the delete on close flag in the reference - * counted struct. Delete when the last reference - * goes away. - */ - fsp->delete_on_close = delete_on_close; + /* + * Set the delete on close flag in the reference + * counted struct. Delete when the last reference + * goes away. + */ + fsp->delete_on_close = delete_on_close; - unlock_share_entry_fsp(fsp); + unlock_share_entry_fsp(fsp); - DEBUG(10, ("call_trans2setfilepathinfo: %s delete on close flag for fnum = %d, file %s\n", - delete_on_close ? "Added" : "Removed", fsp->fnum, fsp->fsp_name )); + DEBUG(10, ("call_trans2setfilepathinfo: %s delete on close flag for fnum = %d, file %s\n", + delete_on_close ? "Added" : "Removed", fsp->fnum, fsp->fsp_name )); - } /* end if(delete_on_close && !GET_DELETE_ON_CLOSE_FLAG(fsp->share_mode)) */ - } /* end if lp_share_modes() */ + } /* end if(delete_on_close && !GET_DELETE_ON_CLOSE_FLAG(fsp->share_mode)) */ } /* end if is_directory. */ } else return(ERROR(ERRDOS,ERRunknownlevel)); diff --git a/source3/smbd/vfs-wrap.c b/source3/smbd/vfs-wrap.c index b9c22ef1f9..a3dd752023 100644 --- a/source3/smbd/vfs-wrap.c +++ b/source3/smbd/vfs-wrap.c @@ -297,3 +297,11 @@ int vfswrap_utime(char *path, struct utimbuf *times) result = utime(path, times); return result; } + +int vfswrap_ftruncate(int fd, SMB_OFF_T offset) +{ + int result; + + result = sys_ftruncate(fd, offset); + return result; +} diff --git a/source3/smbd/vfs.c b/source3/smbd/vfs.c index e92235e230..d76d64684b 100644 --- a/source3/smbd/vfs.c +++ b/source3/smbd/vfs.c @@ -64,7 +64,8 @@ struct vfs_ops default_vfs_ops = { vfswrap_lstat, vfswrap_unlink, vfswrap_chmod, - vfswrap_utime + vfswrap_utime, + vfswrap_ftruncate }; /**************************************************************************** @@ -208,6 +209,10 @@ BOOL vfs_init_custom(connection_struct *conn) conn->vfs_ops.utime = default_vfs_ops.utime; } + if (conn->vfs_ops.ftruncate == NULL) { + conn->vfs_ops.ftruncate= default_vfs_ops.ftruncate; + } + return True; } #endif |