mdclean

git-svn-id: http://opensvn.csie.org/pttbbs/pttbbs/trunk/pttbbs@113 63ad8ddf-47c3-0310-b6dd-a9e9d9715204

1 files changed, 81 insertions, 0 deletions

diff --git a/util/mdclean.c b/util/mdclean.c
new file mode 100644
index 00000000..f8f58728
--- /dev/null
+++ b/util/mdclean.c
@@ -0,0 +1,81 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "config.h"
+#include <sys/types.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <err.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include <sys/mount.h>
+
+#define  MAXDSs   1048576
+#define  LEAVE    10
+#define  CLEAN    10
+typedef struct {
+    time_t  atime;
+    char    name[60];
+} DS;
+
+DS      ds[MAXDSs];
+int     nDSs;
+
+int compar(const void *a, const void *b)
+{
+    return ((DS *)a)->atime - ((DS *)b)->atime;
+}
+
+int main(int argc, char **argv)
+{
+    DIR     *dirp;
+    struct  dirent *dp;
+    struct  stat   sb;
+    struct  statfs sf;
+    char    *fn;
+    time_t  now;
+    if( chdir(BBSHOME "/cache") < 0 )
+	err(1, "chdir");
+    
+    if( (dirp = opendir(".")) == NULL )
+	err(1, "opendir");
+
+    statfs(".", &sf);
+    if( sf.f_bfree * 100 / sf.f_blocks > LEAVE )
+	return 0;
+
+    now = time(NULL);
+    while( (dp = readdir(dirp)) != NULL ){
+	fn = dp->d_name;
+	if( fn[0] != 'e' && fn[0] != 'b' )
+	    continue;
+	if( stat(fn, &sb) < 0 )
+	    continue;
+	if( sb.st_atime < now - 1800 ){
+	    printf("atime: %s\n", fn);
+	    unlink(fn);
+	}
+	else if( sb.st_mtime < now - 7200 ){
+	    printf("mtime: %s\n", fn);
+	    unlink(fn);
+	}
+	else{
+	    if( nDSs != MAXDSs ){
+		strcpy(ds[nDSs].name, fn);
+		ds[nDSs].atime = sb.st_atime;
+		++nDSs;
+	    }
+	}
+    }
+    
+    statfs(".", &sf);
+    if( sf.f_bfree * 100 / sf.f_blocks <= LEAVE ){
+	qsort(ds, nDSs, sizeof(DS), compar);
+	nDSs = nDSs * CLEAN / 100;
+	while( nDSs-- ){
+	    printf("%s\n", ds[nDSs].name);
+	    unlink(ds[nDSs].name);
+	}
+    }
+    return 0;
+}