11/*
2- * $PostgreSQL: pgsql/contrib/pg_archivecleanup/pg_archivecleanup.c,v 1.2 2010/06/17 17:31:27 tgl Exp $
2+ * $PostgreSQL: pgsql/contrib/pg_archivecleanup/pg_archivecleanup.c,v 1.3 2010/07/06 19:18:55 momjian Exp $
33 *
44 * pg_archivecleanup.c
55 *
@@ -40,8 +40,9 @@ bool debug = false; /* are we debugging? */
4040char * archiveLocation ; /* where to find the archive? */
4141char * restartWALFileName ; /* the file from which we can restart restore */
4242char WALFilePath [MAXPGPATH ]; /* the file path including archive */
43- char exclusiveCleanupFileName [MAXPGPATH ]; /* the oldest file we want to
44- * remain in archive */
43+ char exclusiveCleanupFileName [MAXPGPATH ]; /* the oldest file we
44+ * want to remain in
45+ * archive */
4546
4647
4748/* =====================================================================
@@ -68,14 +69,14 @@ char exclusiveCleanupFileName[MAXPGPATH]; /* the oldest file we want to
6869/*
6970 * Initialize allows customized commands into the archive cleanup program.
7071 *
71- * You may wish to add code to check for tape libraries, etc..
72+ * You may wish to add code to check for tape libraries, etc..
7273 */
7374static void
7475Initialize (void )
7576{
7677 /*
77- * This code assumes that archiveLocation is a directory, so we use
78- * stat to test if it's accessible.
78+ * This code assumes that archiveLocation is a directory, so we use stat
79+ * to test if it's accessible.
7980 */
8081 struct stat stat_buf ;
8182
@@ -100,22 +101,21 @@ CleanupPriorWALFiles(void)
100101 while ((xlde = readdir (xldir )) != NULL )
101102 {
102103 /*
103- * We ignore the timeline part of the XLOG segment identifiers
104- * in deciding whether a segment is still needed. This
105- * ensures that we won't prematurely remove a segment from a
106- * parent timeline. We could probably be a little more
107- * proactive about removing segments of non-parent timelines,
108- * but that would be a whole lot more complicated.
104+ * We ignore the timeline part of the XLOG segment identifiers in
105+ * deciding whether a segment is still needed. This ensures that
106+ * we won't prematurely remove a segment from a parent timeline.
107+ * We could probably be a little more proactive about removing
108+ * segments of non-parent timelines, but that would be a whole lot
109+ * more complicated.
109110 *
110- * We use the alphanumeric sorting property of the filenames
111- * to decide which ones are earlier than the
112- * exclusiveCleanupFileName file. Note that this means files
113- * are not removed in the order they were originally written,
114- * in case this worries you.
111+ * We use the alphanumeric sorting property of the filenames to
112+ * decide which ones are earlier than the exclusiveCleanupFileName
113+ * file. Note that this means files are not removed in the order
114+ * they were originally written, in case this worries you.
115115 */
116116 if (strlen (xlde -> d_name ) == XLOG_DATA_FNAME_LEN &&
117- strspn (xlde -> d_name , "0123456789ABCDEF" ) == XLOG_DATA_FNAME_LEN &&
118- strcmp (xlde -> d_name + 8 , exclusiveCleanupFileName + 8 ) < 0 )
117+ strspn (xlde -> d_name , "0123456789ABCDEF" ) == XLOG_DATA_FNAME_LEN &&
118+ strcmp (xlde -> d_name + 8 , exclusiveCleanupFileName + 8 ) < 0 )
119119 {
120120#ifdef WIN32
121121 snprintf (WALFilePath , MAXPGPATH , "%s\\%s" , archiveLocation , xlde -> d_name );
@@ -152,13 +152,13 @@ CleanupPriorWALFiles(void)
152152static void
153153SetWALFileNameForCleanup (void )
154154{
155- bool fnameOK = false;
155+ bool fnameOK = false;
156156
157157 /*
158- * If restartWALFileName is a WAL file name then just use it directly.
159- * If restartWALFileName is a .backup filename, make sure we use
160- * the prefix of the filename, otherwise we will remove wrong files
161- * since 000000010000000000000010.00000020.backup is after
158+ * If restartWALFileName is a WAL file name then just use it directly. If
159+ * restartWALFileName is a .backup filename, make sure we use the prefix
160+ * of the filename, otherwise we will remove wrong files since
161+ * 000000010000000000000010.00000020.backup is after
162162 * 000000010000000000000010.
163163 */
164164 if (strlen (restartWALFileName ) == XLOG_DATA_FNAME_LEN &&
@@ -169,17 +169,20 @@ SetWALFileNameForCleanup(void)
169169 }
170170 else if (strlen (restartWALFileName ) == XLOG_BACKUP_FNAME_LEN )
171171 {
172- int args ;
172+ int args ;
173173 uint32 tli = 1 ,
174174 log = 0 ,
175175 seg = 0 ,
176176 offset = 0 ;
177+
177178 args = sscanf (restartWALFileName , "%08X%08X%08X.%08X.backup" , & tli , & log , & seg , & offset );
178179 if (args == 4 )
179180 {
180181 fnameOK = true;
182+
181183 /*
182- * Use just the prefix of the filename, ignore everything after first period
184+ * Use just the prefix of the filename, ignore everything after
185+ * first period
183186 */
184187 XLogFileName (exclusiveCleanupFileName , tli , log , seg );
185188 }
@@ -205,12 +208,12 @@ usage(void)
205208 printf ("Usage:\n" );
206209 printf (" %s [OPTION]... ARCHIVELOCATION OLDESTKEPTWALFILE\n" , progname );
207210 printf ("\n"
208- "for use as an archive_cleanup_command in the recovery.conf when standby_mode = on:\n"
211+ "for use as an archive_cleanup_command in the recovery.conf when standby_mode = on:\n"
209212 " archive_cleanup_command = 'pg_archivecleanup [OPTION]... ARCHIVELOCATION %%r'\n"
210213 "e.g.\n"
211214 " archive_cleanup_command = 'pg_archivecleanup /mnt/server/archiverdir %%r'\n" );
212215 printf ("\n"
213- "or for use as a standalone archive cleaner:\n"
216+ "or for use as a standalone archive cleaner:\n"
214217 "e.g.\n"
215218 " pg_archivecleanup /mnt/server/archiverdir 000000010000000000000010.00000020.backup\n" );
216219 printf ("\nOptions:\n" );
@@ -258,9 +261,10 @@ main(int argc, char **argv)
258261
259262 /*
260263 * We will go to the archiveLocation to check restartWALFileName.
261- * restartWALFileName may not exist anymore, which would not be an error, so
262- * we separate the archiveLocation and restartWALFileName so we can check
263- * separately whether archiveLocation exists, if not that is an error
264+ * restartWALFileName may not exist anymore, which would not be an error,
265+ * so we separate the archiveLocation and restartWALFileName so we can
266+ * check separately whether archiveLocation exists, if not that is an
267+ * error
264268 */
265269 if (optind < argc )
266270 {
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