diff options
author | Jelmer Vernooij <jelmer@samba.org> | 2008-10-11 14:44:10 +0200 |
---|---|---|
committer | Jelmer Vernooij <jelmer@samba.org> | 2008-10-11 14:44:10 +0200 |
commit | 6a78e56277799672b7ac187c57e546836e136f79 (patch) | |
tree | 87f0336cb1908d01690b74c56a44f4713559b5bc /source3/smbd/process.c | |
parent | ddbddbd80c80b872cdd36a01f9a3a6bc2eca1b1f (diff) | |
parent | f0a27064869871806343648de3b5a0667118872f (diff) | |
download | samba-6a78e56277799672b7ac187c57e546836e136f79.tar.gz samba-6a78e56277799672b7ac187c57e546836e136f79.tar.bz2 samba-6a78e56277799672b7ac187c57e546836e136f79.zip |
Merge branch 'master' of ssh://git.samba.org/data/git/samba into arc4
Diffstat (limited to 'source3/smbd/process.c')
-rw-r--r-- | source3/smbd/process.c | 193 |
1 files changed, 9 insertions, 184 deletions
diff --git a/source3/smbd/process.c b/source3/smbd/process.c index b2d19e11e3..32629fd392 100644 --- a/source3/smbd/process.c +++ b/source3/smbd/process.c @@ -706,7 +706,7 @@ The timeout is in milliseconds ****************************************************************************/ static NTSTATUS receive_message_or_smb(TALLOC_CTX *mem_ctx, char **buffer, - size_t *buffer_len, int timeout, + size_t *buffer_len, size_t *p_unread, bool *p_encrypted) { fd_set r_fds, w_fds; @@ -720,13 +720,8 @@ static NTSTATUS receive_message_or_smb(TALLOC_CTX *mem_ctx, char **buffer, again: - if (timeout >= 0) { - to.tv_sec = timeout / 1000; - to.tv_usec = (timeout % 1000) * 1000; - } else { - to.tv_sec = SMBD_SELECT_TIMEOUT; - to.tv_usec = 0; - } + to.tv_sec = SMBD_SELECT_TIMEOUT; + to.tv_usec = 0; /* * Note that this call must be before processing any SMB @@ -869,7 +864,7 @@ static NTSTATUS receive_message_or_smb(TALLOC_CTX *mem_ctx, char **buffer, /* Did we timeout ? */ if (selrtn == 0) { - return NT_STATUS_IO_TIMEOUT; + goto again; } /* @@ -1837,23 +1832,6 @@ void chain_reply(struct smb_request *req) } /**************************************************************************** - Setup the needed select timeout in milliseconds. -****************************************************************************/ - -static int setup_select_timeout(void) -{ - int select_timeout; - - select_timeout = SMBD_SELECT_TIMEOUT*1000; - - if (print_notify_messages_pending()) { - select_timeout = MIN(select_timeout, 1000); - } - - return select_timeout; -} - -/**************************************************************************** Check if services need reloading. ****************************************************************************/ @@ -1907,113 +1885,18 @@ void check_reload(time_t t) } /**************************************************************************** - Process any timeout housekeeping. Return False if the caller should exit. -****************************************************************************/ - -static void timeout_processing(int *select_timeout, - time_t *last_timeout_processing_time) -{ - time_t t; - - *last_timeout_processing_time = t = time(NULL); - - /* become root again if waiting */ - change_to_root_user(); - - /* check if we need to reload services */ - check_reload(t); - - if(global_machine_password_needs_changing && - /* for ADS we need to do a regular ADS password change, not a domain - password change */ - lp_security() == SEC_DOMAIN) { - - unsigned char trust_passwd_hash[16]; - time_t lct; - void *lock; - - /* - * We're in domain level security, and the code that - * read the machine password flagged that the machine - * password needs changing. - */ - - /* - * First, open the machine password file with an exclusive lock. - */ - - lock = secrets_get_trust_account_lock(NULL, lp_workgroup()); - - if (lock == NULL) { - DEBUG(0,("process: unable to lock the machine account password for \ -machine %s in domain %s.\n", global_myname(), lp_workgroup() )); - return; - } - - if(!secrets_fetch_trust_account_password(lp_workgroup(), trust_passwd_hash, &lct, NULL)) { - DEBUG(0,("process: unable to read the machine account password for \ -machine %s in domain %s.\n", global_myname(), lp_workgroup())); - TALLOC_FREE(lock); - return; - } - - /* - * Make sure someone else hasn't already done this. - */ - - if(t < lct + lp_machine_password_timeout()) { - global_machine_password_needs_changing = False; - TALLOC_FREE(lock); - return; - } - - /* always just contact the PDC here */ - - change_trust_account_password( lp_workgroup(), NULL); - global_machine_password_needs_changing = False; - TALLOC_FREE(lock); - } - - /* update printer queue caches if necessary */ - - update_monitored_printq_cache(); - - /* - * Now we are root, check if the log files need pruning. - * Force a log file check. - */ - force_check_log_size(); - check_log_size(); - - /* Send any queued printer notify message to interested smbd's. */ - - print_notify_send_messages(smbd_messaging_context(), 0); - - /* - * Modify the select timeout depending upon - * what we have remaining in our queues. - */ - - *select_timeout = setup_select_timeout(); - - return; -} - -/**************************************************************************** Process commands from the client ****************************************************************************/ void smbd_process(void) { - time_t last_timeout_processing_time = time(NULL); unsigned int num_smbs = 0; size_t unread_bytes = 0; max_recv = MIN(lp_maxxmit(),BUFFER_SIZE); while (True) { - int select_timeout = setup_select_timeout(); - int num_echos; + NTSTATUS status; char *inbuf = NULL; size_t inbuf_len = 0; bool encrypted = false; @@ -2021,82 +1904,24 @@ void smbd_process(void) errno = 0; - /* Did someone ask for immediate checks on things like blocking locks ? */ - if (select_timeout == 0) { - timeout_processing(&select_timeout, - &last_timeout_processing_time); - num_smbs = 0; /* Reset smb counter. */ - } - run_events(smbd_event_context(), 0, NULL, NULL); - while (True) { - NTSTATUS status; - - status = receive_message_or_smb( - talloc_tos(), &inbuf, &inbuf_len, - select_timeout, &unread_bytes, &encrypted); - - if (NT_STATUS_IS_OK(status)) { - break; - } - - if (NT_STATUS_EQUAL(status, NT_STATUS_IO_TIMEOUT)) { - timeout_processing( - &select_timeout, - &last_timeout_processing_time); - continue; - } + status = receive_message_or_smb( + talloc_tos(), &inbuf, &inbuf_len, + &unread_bytes, &encrypted); + if (!NT_STATUS_IS_OK(status)) { DEBUG(3, ("receive_message_or_smb failed: %s, " "exiting\n", nt_errstr(status))); return; - - num_smbs = 0; /* Reset smb counter. */ } - - /* - * Ensure we do timeout processing if the SMB we just got was - * only an echo request. This allows us to set the select - * timeout in 'receive_message_or_smb()' to any value we like - * without worrying that the client will send echo requests - * faster than the select timeout, thus starving out the - * essential processing (change notify, blocking locks) that - * the timeout code does. JRA. - */ - num_echos = smb_echo_count; - process_smb(inbuf, inbuf_len, unread_bytes, encrypted); TALLOC_FREE(inbuf); - if (smb_echo_count != num_echos) { - timeout_processing(&select_timeout, - &last_timeout_processing_time); - num_smbs = 0; /* Reset smb counter. */ - } - num_smbs++; - /* - * If we are getting smb requests in a constant stream - * with no echos, make sure we attempt timeout processing - * every select_timeout milliseconds - but only check for this - * every 200 smb requests. - */ - - if ((num_smbs % 200) == 0) { - time_t new_check_time = time(NULL); - if(new_check_time - last_timeout_processing_time >= (select_timeout/1000)) { - timeout_processing( - &select_timeout, - &last_timeout_processing_time); - num_smbs = 0; /* Reset smb counter. */ - last_timeout_processing_time = new_check_time; /* Reset time. */ - } - } - /* The timeout_processing function isn't run nearly often enough to implement 'max log size' without overrunning the size of the file by many megabytes. |