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//usr/include/proftpd/options.h
/* * ProFTPD - FTP server daemon * Copyright (c) 1997, 1998 Public Flood Software * Copyright (c) 1999, 2000 MacGyver aka Habeeb J. Dihu <macgyver@tos.net> * Copyright (c) 2001-2023 The ProFTPD Project team * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA. * * As a special exemption, Public Flood Software/MacGyver aka Habeeb J. Dihu * and other respective copyright holders give permission to link this program * with OpenSSL, and distribute the resulting executable, without including * the source code for OpenSSL in the source distribution. */ /* User configurable defaults and tunable parameters. */ #ifndef PR_OPTIONS_H #define PR_OPTIONS_H /* Tunable parameters */ /* This defines the timeout for the main select() loop, defines the number * of seconds to wait for a session request before checking for things such * as shutdown requests, perform signal dispatching, etc before waitinng * for requests again. */ #define PR_TUNABLE_SELECT_TIMEOUT 30 /* Hash table size is the number of items in the module hash tables. */ #define PR_TUNABLE_HASH_TABLE_SIZE 40 /* "Backlog" is the number of connections that can be received at one * burst before the kernel rejects. This can be configured by the * "tcpBackLog" configuration directive, this value is just the default. * If a backlog value of -1 is supported, it means "use system/kernel default". */ #ifndef PR_TUNABLE_DEFAULT_BACKLOG # ifdef LISTEN_NEGATIVE_BACKLOG # define PR_TUNABLE_DEFAULT_BACKLOG -1 # else # define PR_TUNABLE_DEFAULT_BACKLOG 128 # endif /* LISTEN_NEGATIVE_BACKLOG */ #endif /* PR_TUNABLE_DEFAULT_BACKLOG */ /* The default TCP send/receive buffer sizes, should explicit sizes not * be defined at compile time, or should the runtime determination process * fail. * * Note that these default buffer sizes are only used if the service cannot * determine the platform's favored network buffer sizes using getsockopt(2). * If you wish to override the use of getsockopt(2) to determine the network * buffer sizes to use, you can use the PR_TUNABLE_RCVBUFSZ and * PR_TUNABLE_SNDBUFSZ macros to define, at compile-time, the network buffer * sizes to use. */ #ifndef PR_TUNABLE_DEFAULT_RCVBUFSZ # define PR_TUNABLE_DEFAULT_RCVBUFSZ 65536 #endif /* PR_TUNABLE_DEFAULT_RCVBUFSZ */ #ifndef PR_TUNABLE_DEFAULT_SNDBUFSZ # define PR_TUNABLE_DEFAULT_SNDBUFSZ 65536 #endif /* PR_TUNABLE_DEFAULT_SNDBUFSZ */ /* Default internal buffer size used for data transfers and other * miscellaneous tasks. */ #ifndef PR_TUNABLE_BUFFER_SIZE # define PR_TUNABLE_BUFFER_SIZE 1024 #endif /* There is also a definable buffer size used specifically for parsing * lines of text from the config file: PR_TUNABLE_PARSER_BUFFER_SIZE. * * You should manually set the PR_TUNABLE_PARSER_BUFFER_SIZE only if you * have exceptionally long configuration lines. */ #ifndef PR_TUNABLE_PARSER_BUFFER_SIZE # define PR_TUNABLE_PARSER_BUFFER_SIZE 4096 #endif /* There is also a definable buffer size used specifically for data * transfers: PR_TUNABLE_XFER_BUFFER_SIZE. By default, this buffer * size is automatically determined, at runtime, as the smaller of the * TCP receive and send buffer sizes. * * You should manually set the PR_TUNABLE_XFER_BUFFER_SIZE only in * special circumstances, when you need to explicitly control that * buffer size. */ #ifndef PR_TUNABLE_XFER_BUFFER_SIZE # define PR_TUNABLE_XFER_BUFFER_SIZE PR_TUNABLE_BUFFER_SIZE #endif /* Maximum FTP command size. For details on this size of 512KB, see * the Bug#4014 discussion. */ #ifndef PR_TUNABLE_CMD_BUFFER_SIZE # define PR_TUNABLE_CMD_BUFFER_SIZE (512 * 1024) #endif /* Maximum path length. GNU HURD (and some others) do not define * MAXPATHLEN. POSIX' PATH_MAX is mandated to be at least 256 * (according to some), so 1K, in the absence of MAXPATHLEN, should be * a reasonable default. */ #ifndef PR_TUNABLE_PATH_MAX # ifdef MAXPATHLEN # define PR_TUNABLE_PATH_MAX MAXPATHLEN # else # define PR_TUNABLE_PATH_MAX 1024 # endif #endif /* Default timeouts, if not explicitly configured via * the TimeoutLogin, TimeoutIdle, etc directives. */ #ifndef PR_TUNABLE_TIMEOUTIDENT # define PR_TUNABLE_TIMEOUTIDENT 10 #endif #ifndef PR_TUNABLE_TIMEOUTIDLE # define PR_TUNABLE_TIMEOUTIDLE 600 #endif /* The default command timeout in many command-line FTP clients (e.g. * lukemftp, used on BSDs and maybe Linux?) is 60 seconds. To avoid having * those clients close the control connection because proftpd takes too * long, while performing lingering closes, to send a response, keep the * default linger timeout under 60 seconds. */ #ifndef PR_TUNABLE_TIMEOUTLINGER # define PR_TUNABLE_TIMEOUTLINGER 10 #endif #ifndef PR_TUNABLE_TIMEOUTLOGIN # define PR_TUNABLE_TIMEOUTLOGIN 300 #endif #ifndef PR_TUNABLE_TIMEOUTNOXFER # define PR_TUNABLE_TIMEOUTNOXFER 300 #endif #ifndef PR_TUNABLE_TIMEOUTSTALLED # define PR_TUNABLE_TIMEOUTSTALLED 3600 #endif /* Number of bytes in a new memory pool. During file transfers, * quite a few pools can be created, which eat up a lot of memory. * Tune this if ProFTPD seems too memory hungry (warning! too low * can negatively impact performance) */ #ifndef PR_TUNABLE_NEW_POOL_SIZE # define PR_TUNABLE_NEW_POOL_SIZE 512 #endif /* Number of bytes in certain scoreboard fields, usually for reporting * the full command received from the connected client, or the current * working directory for the session. */ #ifndef PR_TUNABLE_SCOREBOARD_BUFFER_SIZE # define PR_TUNABLE_SCOREBOARD_BUFFER_SIZE 80 #endif /* Number of seconds between scoreboard scrubs, where the scoreboard is * scanned for slots containing invalid PIDs. Defaults to 30 seconds. */ #ifndef PR_TUNABLE_SCOREBOARD_SCRUB_TIMER # define PR_TUNABLE_SCOREBOARD_SCRUB_TIMER 30 #endif /* Maximum number of attempted updates to the scoreboard during a * file transfer before an actual write is done. This is to allow * an optimization where the scoreboard is not updated on every loop * through the transfer buffer. */ #ifndef PR_TUNABLE_XFER_SCOREBOARD_UPDATES # define PR_TUNABLE_XFER_SCOREBOARD_UPDATES 10 #endif #ifndef PR_TUNABLE_CALLER_DEPTH /* Max depth of call stack if stacktrace support is enabled. */ # define PR_TUNABLE_CALLER_DEPTH 32 #endif #ifndef PR_TUNABLE_ENV_MAX /* Max length of environment variable values allowed by proftpd. */ # define PR_TUNABLE_ENV_MAX 2048 #endif #ifndef PR_TUNABLE_GLOBBING_MAX_RECURSION /* Max number of recursion/directory levels to support when globbing. */ # define PR_TUNABLE_GLOBBING_MAX_RECURSION 8 #endif #ifndef PR_TUNABLE_GLOBBING_MAX_MATCHES /* Max number of matches to support when globbing. */ # define PR_TUNABLE_GLOBBING_MAX_MATCHES 100000UL #endif #ifndef PR_TUNABLE_LOGIN_MAX /* Maximum length of login name. * * Ideally, we'd use _POSIX_LOGIN_NAME_MAX here, if it was defined. However, * doing so would cause trouble for those sites that use databases for * storing user information; such sites often use email addresses as * login names. Given that, let's use 256 as a login name size. */ # define PR_TUNABLE_LOGIN_MAX 256 #endif #ifndef PR_TUNABLE_PASSWORD_MAX /* Maximum length of a password. */ # define PR_TUNABLE_PASSWORD_MAX 1024 #endif #ifndef PR_TUNABLE_EINTR_RETRY_INTERVAL /* Define the time to delay, in seconds, after a system call has been * interrupted (errno is EINTR) before retrying that call. * * The default behavior is delay 0.1 secs between retries. */ # define PR_TUNABLE_EINTR_RETRY_INTERVAL 0.1 #endif #ifndef PR_TUNABLE_XFER_LOG_MODE # define PR_TUNABLE_XFER_LOG_MODE 0644 #endif /* FS Statcache tuning. */ #if !defined(PR_TUNABLE_FS_STATCACHE_SIZE) # define PR_TUNABLE_FS_STATCACHE_SIZE 30000 #endif #if !defined(PR_TUNABLE_FS_STATCACHE_MAX_AGE) # define PR_TUNABLE_FS_STATCACHE_MAX_AGE 3 #endif #endif /* PR_OPTIONS_H */
