From 3f749924f82efd5b2f4b424f6c69a89a2959e4b3 Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Sun, 19 Jun 2005 21:34:03 +0000 Subject: [PATCH] Simplify uses of readdir() by creating a function ReadDir() that includes error checking and an appropriate ereport(ERROR) message. This gets rid of rather tedious and error-prone manipulation of errno, as well as a Windows-specific bug workaround, at more than a dozen call sites. After an idea in a recent patch by Heikki Linnakangas. --- contrib/dbsize/dbsize.c | 19 ++------ src/backend/access/transam/slru.c | 25 +---------- src/backend/access/transam/twophase.c | 53 ++-------------------- src/backend/access/transam/xlog.c | 36 ++------------- src/backend/commands/tablespace.c | 51 ++------------------- src/backend/postmaster/pgarch.c | 21 +-------- src/backend/storage/file/fd.c | 65 +++++++++++++++++++++++---- src/backend/utils/adt/misc.c | 12 ++--- src/include/storage/fd.h | 3 +- src/timezone/pgtz.c | 26 ++++------- 10 files changed, 88 insertions(+), 223 deletions(-) diff --git a/contrib/dbsize/dbsize.c b/contrib/dbsize/dbsize.c index afa1937145..903de97b37 100644 --- a/contrib/dbsize/dbsize.c +++ b/contrib/dbsize/dbsize.c @@ -5,7 +5,7 @@ * Copyright (c) 2002-2005, PostgreSQL Global Development Group * * IDENTIFICATION - * $PostgreSQL: pgsql/contrib/dbsize/dbsize.c,v 1.17 2005/05/27 00:57:48 neilc Exp $ + * $PostgreSQL: pgsql/contrib/dbsize/dbsize.c,v 1.18 2005/06/19 21:34:00 tgl Exp $ * */ @@ -58,7 +58,7 @@ db_dir_size(const char *path) if (!dirdesc) return 0; - while ((direntry = readdir(dirdesc)) != NULL) + while ((direntry = ReadDir(dirdesc, path)) != NULL) { struct stat fst; @@ -97,13 +97,8 @@ calculate_database_size(Oid dbOid) /* Scan the non-default tablespaces */ snprintf(pathname, MAXPGPATH, "%s/pg_tblspc", DataDir); dirdesc = AllocateDir(pathname); - if (!dirdesc) - ereport(ERROR, - (errcode_for_file_access(), - errmsg("could not open tablespace directory \"%s\": %m", - pathname))); - while ((direntry = readdir(dirdesc)) != NULL) + while ((direntry = ReadDir(dirdesc, pathname)) != NULL) { if (strcmp(direntry->d_name, ".") == 0 || strcmp(direntry->d_name, "..") == 0) @@ -147,13 +142,7 @@ pg_tablespace_size(PG_FUNCTION_ARGS) dirdesc = AllocateDir(tblspcPath); - if (!dirdesc) - ereport(ERROR, - (errcode_for_file_access(), - errmsg("could not open tablespace directory \"%s\": %m", - tblspcPath))); - - while ((direntry = readdir(dirdesc)) != NULL) + while ((direntry = ReadDir(dirdesc, tblspcPath)) != NULL) { struct stat fst; diff --git a/src/backend/access/transam/slru.c b/src/backend/access/transam/slru.c index cfc4fd67ea..24f9a94779 100644 --- a/src/backend/access/transam/slru.c +++ b/src/backend/access/transam/slru.c @@ -48,7 +48,7 @@ * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/backend/access/transam/slru.c,v 1.24 2005/02/12 23:53:37 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/access/transam/slru.c,v 1.25 2005/06/19 21:34:01 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -924,14 +924,7 @@ SlruScanDirectory(SlruCtl ctl, int cutoffPage, bool doDeletions) cutoffPage -= cutoffPage % SLRU_PAGES_PER_SEGMENT; cldir = AllocateDir(ctl->Dir); - if (cldir == NULL) - ereport(ERROR, - (errcode_for_file_access(), - errmsg("could not open directory \"%s\": %m", - ctl->Dir))); - - errno = 0; - while ((clde = readdir(cldir)) != NULL) + while ((clde = ReadDir(cldir, ctl->Dir)) != NULL) { if (strlen(clde->d_name) == 4 && strspn(clde->d_name, "0123456789ABCDEF") == 4) @@ -950,21 +943,7 @@ SlruScanDirectory(SlruCtl ctl, int cutoffPage, bool doDeletions) } } } - errno = 0; } -#ifdef WIN32 - - /* - * This fix is in mingw cvs (runtime/mingwex/dirent.c rev 1.4), but - * not in released version - */ - if (GetLastError() == ERROR_NO_MORE_FILES) - errno = 0; -#endif - if (errno) - ereport(ERROR, - (errcode_for_file_access(), - errmsg("could not read directory \"%s\": %m", ctl->Dir))); FreeDir(cldir); return found; diff --git a/src/backend/access/transam/twophase.c b/src/backend/access/transam/twophase.c index 1aa9ce9b02..6b78467ae1 100644 --- a/src/backend/access/transam/twophase.c +++ b/src/backend/access/transam/twophase.c @@ -7,7 +7,7 @@ * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/access/transam/twophase.c,v 1.4 2005/06/19 20:00:38 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/access/transam/twophase.c,v 1.5 2005/06/19 21:34:01 tgl Exp $ * * NOTES * Each global transaction is associated with a global transaction @@ -1440,13 +1440,7 @@ PrescanPreparedTransactions(void) snprintf(dir, MAXPGPATH, "%s/%s", DataDir, TWOPHASE_DIR); cldir = AllocateDir(dir); - if (cldir == NULL) - ereport(ERROR, - (errcode_for_file_access(), - errmsg("could not open directory \"%s\": %m", dir))); - - errno = 0; - while ((clde = readdir(cldir)) != NULL) + while ((clde = ReadDir(cldir, dir)) != NULL) { if (strlen(clde->d_name) == 8 && strspn(clde->d_name, "0123456789ABCDEF") == 8) @@ -1466,7 +1460,6 @@ PrescanPreparedTransactions(void) (errmsg("removing future twophase state file \"%s\"", clde->d_name))); RemoveTwoPhaseFile(xid, true); - errno = 0; continue; } @@ -1483,7 +1476,6 @@ PrescanPreparedTransactions(void) (errmsg("removing corrupt twophase state file \"%s\"", clde->d_name))); RemoveTwoPhaseFile(xid, true); - errno = 0; continue; } @@ -1496,7 +1488,6 @@ PrescanPreparedTransactions(void) clde->d_name))); RemoveTwoPhaseFile(xid, true); pfree(buf); - errno = 0; continue; } @@ -1528,22 +1519,7 @@ PrescanPreparedTransactions(void) pfree(buf); } - errno = 0; } -#ifdef WIN32 - - /* - * This fix is in mingw cvs (runtime/mingwex/dirent.c rev 1.4), but - * not in released version - */ - if (GetLastError() == ERROR_NO_MORE_FILES) - errno = 0; -#endif - if (errno) - ereport(ERROR, - (errcode_for_file_access(), - errmsg("could not read directory \"%s\": %m", dir))); - FreeDir(cldir); return result; @@ -1566,13 +1542,7 @@ RecoverPreparedTransactions(void) snprintf(dir, MAXPGPATH, "%s/%s", DataDir, TWOPHASE_DIR); cldir = AllocateDir(dir); - if (cldir == NULL) - ereport(ERROR, - (errcode_for_file_access(), - errmsg("could not open directory \"%s\": %m", dir))); - - errno = 0; - while ((clde = readdir(cldir)) != NULL) + while ((clde = ReadDir(cldir, dir)) != NULL) { if (strlen(clde->d_name) == 8 && strspn(clde->d_name, "0123456789ABCDEF") == 8) @@ -1594,7 +1564,6 @@ RecoverPreparedTransactions(void) (errmsg("removing stale twophase state file \"%s\"", clde->d_name))); RemoveTwoPhaseFile(xid, true); - errno = 0; continue; } @@ -1606,7 +1575,6 @@ RecoverPreparedTransactions(void) (errmsg("removing corrupt twophase state file \"%s\"", clde->d_name))); RemoveTwoPhaseFile(xid, true); - errno = 0; continue; } @@ -1655,22 +1623,7 @@ RecoverPreparedTransactions(void) pfree(buf); } - errno = 0; } -#ifdef WIN32 - - /* - * This fix is in mingw cvs (runtime/mingwex/dirent.c rev 1.4), but - * not in released version - */ - if (GetLastError() == ERROR_NO_MORE_FILES) - errno = 0; -#endif - if (errno) - ereport(ERROR, - (errcode_for_file_access(), - errmsg("could not read directory \"%s\": %m", dir))); - FreeDir(cldir); } diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c index b15949b285..3a55a521c1 100644 --- a/src/backend/access/transam/xlog.c +++ b/src/backend/access/transam/xlog.c @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.202 2005/06/19 20:00:38 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.203 2005/06/19 21:34:01 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -2265,8 +2265,7 @@ MoveOfflineLogs(uint32 log, uint32 seg, XLogRecPtr endptr, XLogFileName(lastoff, ThisTimeLineID, log, seg); - errno = 0; - while ((xlde = readdir(xldir)) != NULL) + while ((xlde = ReadDir(xldir, XLogDir)) != NULL) { /* * We ignore the timeline part of the XLOG segment identifiers in @@ -2326,22 +2325,8 @@ MoveOfflineLogs(uint32 log, uint32 seg, XLogRecPtr endptr, XLogArchiveCleanup(xlde->d_name); } } - errno = 0; } -#ifdef WIN32 - /* - * This fix is in mingw cvs (runtime/mingwex/dirent.c rev 1.4), but - * not in released version - */ - if (GetLastError() == ERROR_NO_MORE_FILES) - errno = 0; -#endif - if (errno) - ereport(ERROR, - (errcode_for_file_access(), - errmsg("could not read transaction log directory \"%s\": %m", - XLogDir))); FreeDir(xldir); } @@ -2362,8 +2347,7 @@ RemoveOldBackupHistory(void) errmsg("could not open transaction log directory \"%s\": %m", XLogDir))); - errno = 0; - while ((xlde = readdir(xldir)) != NULL) + while ((xlde = ReadDir(xldir, XLogDir)) != NULL) { if (strlen(xlde->d_name) > 24 && strspn(xlde->d_name, "0123456789ABCDEF") == 24 && @@ -2381,22 +2365,8 @@ RemoveOldBackupHistory(void) XLogArchiveCleanup(xlde->d_name); } } - errno = 0; } -#ifdef WIN32 - /* - * This fix is in mingw cvs (runtime/mingwex/dirent.c rev 1.4), but - * not in released version - */ - if (GetLastError() == ERROR_NO_MORE_FILES) - errno = 0; -#endif - if (errno) - ereport(ERROR, - (errcode_for_file_access(), - errmsg("could not read transaction log directory \"%s\": %m", - XLogDir))); FreeDir(xldir); } diff --git a/src/backend/commands/tablespace.c b/src/backend/commands/tablespace.c index fac20708c0..a469a8fa34 100644 --- a/src/backend/commands/tablespace.c +++ b/src/backend/commands/tablespace.c @@ -37,7 +37,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/commands/tablespace.c,v 1.21 2005/06/06 20:22:57 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/commands/tablespace.c,v 1.22 2005/06/19 21:34:01 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -519,23 +519,16 @@ remove_tablespace_directories(Oid tablespaceoid, bool redo) pfree(location); return true; } - ereport(ERROR, - (errcode_for_file_access(), - errmsg("could not open directory \"%s\": %m", - location))); + /* else let ReadDir report the error */ } - errno = 0; - while ((de = readdir(dirdesc)) != NULL) + while ((de = ReadDir(dirdesc, location)) != NULL) { /* Note we ignore PG_VERSION for the nonce */ if (strcmp(de->d_name, ".") == 0 || strcmp(de->d_name, "..") == 0 || strcmp(de->d_name, "PG_VERSION") == 0) - { - errno = 0; continue; - } subfile = palloc(strlen(location) + 1 + strlen(de->d_name) + 1); sprintf(subfile, "%s/%s", location, de->d_name); @@ -555,22 +548,8 @@ remove_tablespace_directories(Oid tablespaceoid, bool redo) subfile))); pfree(subfile); - errno = 0; } -#ifdef WIN32 - /* - * This fix is in mingw cvs (runtime/mingwex/dirent.c rev 1.4), but - * not in released version - */ - if (GetLastError() == ERROR_NO_MORE_FILES) - errno = 0; -#endif - if (errno) - ereport(ERROR, - (errcode_for_file_access(), - errmsg("could not read directory \"%s\": %m", - location))); FreeDir(dirdesc); /* @@ -685,38 +664,16 @@ directory_is_empty(const char *path) struct dirent *de; dirdesc = AllocateDir(path); - if (dirdesc == NULL) - ereport(ERROR, - (errcode_for_file_access(), - errmsg("could not open directory \"%s\": %m", - path))); - errno = 0; - while ((de = readdir(dirdesc)) != NULL) + while ((de = ReadDir(dirdesc, path)) != NULL) { if (strcmp(de->d_name, ".") == 0 || strcmp(de->d_name, "..") == 0) - { - errno = 0; continue; - } FreeDir(dirdesc); return false; } -#ifdef WIN32 - /* - * This fix is in mingw cvs (runtime/mingwex/dirent.c rev 1.4), but - * not in released version - */ - if (GetLastError() == ERROR_NO_MORE_FILES) - errno = 0; -#endif - if (errno) - ereport(ERROR, - (errcode_for_file_access(), - errmsg("could not read directory \"%s\": %m", - path))); FreeDir(dirdesc); return true; } diff --git a/src/backend/postmaster/pgarch.c b/src/backend/postmaster/pgarch.c index fc2d9ce729..e5eecb2dbc 100644 --- a/src/backend/postmaster/pgarch.c +++ b/src/backend/postmaster/pgarch.c @@ -19,7 +19,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/postmaster/pgarch.c,v 1.15 2005/03/10 07:14:03 neilc Exp $ + * $PostgreSQL: pgsql/src/backend/postmaster/pgarch.c,v 1.16 2005/06/19 21:34:01 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -510,8 +510,7 @@ pgarch_readyXlog(char *xlog) errmsg("could not open archive status directory \"%s\": %m", XLogArchiveStatusDir))); - errno = 0; - while ((rlde = readdir(rldir)) != NULL) + while ((rlde = ReadDir(rldir, XLogArchiveStatusDir)) != NULL) { int basenamelen = (int) strlen(rlde->d_name) - 6; @@ -531,23 +530,7 @@ pgarch_readyXlog(char *xlog) strcpy(newxlog, rlde->d_name); } } - - errno = 0; } -#ifdef WIN32 - - /* - * This fix is in mingw cvs (runtime/mingwex/dirent.c rev 1.4), but - * not in released version - */ - if (GetLastError() == ERROR_NO_MORE_FILES) - errno = 0; -#endif - if (errno) - ereport(ERROR, - (errcode_for_file_access(), - errmsg("could not read archive status directory \"%s\": %m", - XLogArchiveStatusDir))); FreeDir(rldir); if (found) diff --git a/src/backend/storage/file/fd.c b/src/backend/storage/file/fd.c index 81ba3edbbe..b91e667d0b 100644 --- a/src/backend/storage/file/fd.c +++ b/src/backend/storage/file/fd.c @@ -7,7 +7,7 @@ * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/storage/file/fd.c,v 1.116 2005/05/20 14:53:26 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/storage/file/fd.c,v 1.117 2005/06/19 21:34:02 tgl Exp $ * * NOTES: * @@ -1337,6 +1337,59 @@ TryAgain: return NULL; } +/* + * Read a directory opened with AllocateDir, ereport'ing any error. + * + * This is easier to use than raw readdir() since it takes care of some + * otherwise rather tedious and error-prone manipulation of errno. Also, + * if you are happy with a generic error message for AllocateDir failure, + * you can just do + * + * dir = AllocateDir(path); + * while ((dirent = ReadDir(dir, path)) != NULL) + * process dirent; + * FreeDir(path); + * + * since a NULL dir parameter is taken as indicating AllocateDir failed. + * (Make sure errno hasn't been changed since AllocateDir if you use this + * shortcut.) + * + * The pathname passed to AllocateDir must be passed to this routine too, + * but it is only used for error reporting. + */ +struct dirent * +ReadDir(DIR *dir, const char *dirname) +{ + struct dirent *dent; + + /* Give a generic message for AllocateDir failure, if caller didn't */ + if (dir == NULL) + ereport(ERROR, + (errcode_for_file_access(), + errmsg("could not open directory \"%s\": %m", + dirname))); + + errno = 0; + if ((dent = readdir(dir)) != NULL) + return dent; + +#ifdef WIN32 + /* + * This fix is in mingw cvs (runtime/mingwex/dirent.c rev 1.4), but + * not in released version + */ + if (GetLastError() == ERROR_NO_MORE_FILES) + errno = 0; +#endif + + if (errno) + ereport(ERROR, + (errcode_for_file_access(), + errmsg("could not read directory \"%s\": %m", + dirname))); + return NULL; +} + /* * Close a directory opened with AllocateDir. * @@ -1526,14 +1579,8 @@ RemovePgTempFiles(void) */ snprintf(db_path, sizeof(db_path), "%s/base", DataDir); db_dir = AllocateDir(db_path); - if (db_dir == NULL) - { - /* this really should not happen */ - elog(LOG, "could not open directory \"%s\": %m", db_path); - return; - } - while ((db_de = readdir(db_dir)) != NULL) + while ((db_de = ReadDir(db_dir, db_path)) != NULL) { if (strcmp(db_de->d_name, ".") == 0 || strcmp(db_de->d_name, "..") == 0) @@ -1576,7 +1623,7 @@ RemovePgTempFilesInDir(const char *tmpdirname) return; } - while ((temp_de = readdir(temp_dir)) != NULL) + while ((temp_de = ReadDir(temp_dir, tmpdirname)) != NULL) { if (strcmp(temp_de->d_name, ".") == 0 || strcmp(temp_de->d_name, "..") == 0) diff --git a/src/backend/utils/adt/misc.c b/src/backend/utils/adt/misc.c index 886ff01122..4553253966 100644 --- a/src/backend/utils/adt/misc.c +++ b/src/backend/utils/adt/misc.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/utils/adt/misc.c,v 1.43 2005/05/19 21:35:47 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/utils/adt/misc.c,v 1.44 2005/06/19 21:34:02 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -187,11 +187,10 @@ pg_tablespace_databases(PG_FUNCTION_ARGS) if (!fctx->dirdesc) /* not a tablespace */ SRF_RETURN_DONE(funcctx); - while ((de = readdir(fctx->dirdesc)) != NULL) + while ((de = ReadDir(fctx->dirdesc, fctx->location)) != NULL) { char *subdir; DIR *dirdesc; - Oid datOid = atooid(de->d_name); /* this test skips . and .., but is awfully weak */ @@ -204,16 +203,13 @@ pg_tablespace_databases(PG_FUNCTION_ARGS) subdir = palloc(strlen(fctx->location) + 1 + strlen(de->d_name) + 1); sprintf(subdir, "%s/%s", fctx->location, de->d_name); dirdesc = AllocateDir(subdir); - pfree(subdir); - if (!dirdesc) - continue; /* XXX more sloppiness */ - - while ((de = readdir(dirdesc)) != 0) + while ((de = ReadDir(dirdesc, subdir)) != NULL) { if (strcmp(de->d_name, ".") != 0 && strcmp(de->d_name, "..") != 0) break; } FreeDir(dirdesc); + pfree(subdir); if (!de) continue; /* indeed, nothing in it */ diff --git a/src/include/storage/fd.h b/src/include/storage/fd.h index 20c2c64c89..0cebfb85bb 100644 --- a/src/include/storage/fd.h +++ b/src/include/storage/fd.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/storage/fd.h,v 1.51 2005/05/20 14:53:26 momjian Exp $ + * $PostgreSQL: pgsql/src/include/storage/fd.h,v 1.52 2005/06/19 21:34:03 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -76,6 +76,7 @@ extern int FreeFile(FILE *file); /* Operations to allow use of the library routines */ extern DIR *AllocateDir(const char *dirname); +extern struct dirent *ReadDir(DIR *dir, const char *dirname); extern int FreeDir(DIR *dir); /* If you've really really gotta have a plain kernel FD, use this */ diff --git a/src/timezone/pgtz.c b/src/timezone/pgtz.c index b5b9107c75..391c3e552c 100644 --- a/src/timezone/pgtz.c +++ b/src/timezone/pgtz.c @@ -6,7 +6,7 @@ * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group * * IDENTIFICATION - * $PostgreSQL: pgsql/src/timezone/pgtz.c,v 1.33 2005/06/15 00:09:26 momjian Exp $ + * $PostgreSQL: pgsql/src/timezone/pgtz.c,v 1.34 2005/06/19 21:34:03 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -409,11 +409,12 @@ identify_system_timezone(void) * score. bestzonename must be a buffer of length TZ_STRLEN_MAX + 1. */ static void -scan_available_timezones(char *tzdir, char *tzdirsub, struct tztry * tt, +scan_available_timezones(char *tzdir, char *tzdirsub, struct tztry *tt, int *bestscore, char *bestzonename) { int tzdir_orig_len = strlen(tzdir); DIR *dirdesc; + struct dirent *direntry; dirdesc = AllocateDir(tzdir); if (!dirdesc) @@ -424,22 +425,10 @@ scan_available_timezones(char *tzdir, char *tzdirsub, struct tztry * tt, return; } - for (;;) + while ((direntry = ReadDir(dirdesc, tzdir)) != NULL) { - struct dirent *direntry; struct stat statbuf; - errno = 0; - direntry = readdir(dirdesc); - if (!direntry) - { - if (errno) - ereport(LOG, - (errcode_for_file_access(), - errmsg("error reading directory: %m"))); - break; - } - /* Ignore . and .., plus any other "hidden" files */ if (direntry->d_name[0] == '.') continue; @@ -452,6 +441,7 @@ scan_available_timezones(char *tzdir, char *tzdirsub, struct tztry * tt, ereport(LOG, (errcode_for_file_access(), errmsg("could not stat \"%s\": %m", tzdir))); + tzdir[tzdir_orig_len] = '\0'; continue; } @@ -480,12 +470,12 @@ scan_available_timezones(char *tzdir, char *tzdirsub, struct tztry * tt, StrNCpy(bestzonename, tzdirsub, TZ_STRLEN_MAX + 1); } } + + /* Restore tzdir */ + tzdir[tzdir_orig_len] = '\0'; } FreeDir(dirdesc); - - /* Restore tzdir */ - tzdir[tzdir_orig_len] = '\0'; } #else /* WIN32 */