-// $Id: vdu.c,v 1.2 2003/09/30 20:16:53 ensc Exp $
+// $Id: vdu-new.c,v 1.2 2004/08/17 14:44:14 mef-pl_kernel Exp $
// Copyright (C) 2003 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
// based on vdu.cc by Jacques Gelinas
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#define _LARGEFILE64_SOURCE
+
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <dirent.h>
#include <errno.h>
#include <string.h>
+#include <sys/ioctl.h>
+
+#include <assert.h>
+
+#include "vdu.h"
+
+HashTable tbl;
+
+static int // boolean
+INOPut(PHashTable tbl, ino64_t* key, struct stat64 **val){
+ return Put(tbl, key, val);
+}
__extension__ typedef long long longlong;
+//__extension__ typedef long longlong;
+
+static longlong inodes;
+static longlong blocks;
+static longlong size;
+
+static short verbose = 0;
+
+static inline void warning(char *s) {
+ fprintf(stderr,"%s (%s)\n",s,strerror(errno));
+}
+
+void panic(char *s) {
+ warning(s);
+ exit(2);
+}
-static int vdu_onedir (char const *path, longlong *size)
+static void vdu_onedir (char const *path)
{
- int ret = -1;
- int dirfd = open (path,O_RDONLY); // A handle to speed up
- // chdir
- if (dirfd == -1){
- fprintf (stderr,"Can't open directory %s (%s)\n",path
- ,strerror(errno));
- }else{
- DIR *dir;
-
- fchdir (dirfd);
- dir = opendir (".");
- if (dir == NULL){
- fprintf (stderr,"Can't open (opendir) directory %s (%s)\n",path
- ,strerror(errno));
- }else{
- struct stat dirst;
- struct dirent *ent;
- longlong dirsize = 0;
-
- ret = 0;
- lstat (".",&dirst);
- while ((ent=readdir(dir))!=NULL){
- struct stat st;
- if (lstat(ent->d_name,&st)==-1){
- fprintf (stderr,"Can't stat %s/%s (%s)\n",path
- ,ent->d_name,strerror(errno));
- ret = -1;
- break;
- }else if (S_ISREG(st.st_mode)){
- if (st.st_nlink == 1){
- dirsize += st.st_size;
- }
- }else if (S_ISDIR(st.st_mode) && st.st_dev == dirst.st_dev){
- if (strcmp(ent->d_name,".")!=0
- && strcmp(ent->d_name,"..")!=0){
- char *tmp = malloc(strlen(path) + strlen(ent->d_name) + 2);
- if (tmp==0) ret=-1;
- else {
- strcpy(tmp, path);
- strcat(tmp, "/");
- strcat(tmp, ent->d_name);
- ret = vdu_onedir(tmp,&dirsize);
- free(tmp);
- fchdir (dirfd);
- }
- }
- }
- }
- closedir (dir);
- *size += dirsize;
+ char const *foo = path;
+ struct stat64 dirst, st;
+ struct dirent *ent;
+ char *name;
+ DIR *dir;
+ int dirfd;
+ longlong dirsize, dirinodes, dirblocks;
+
+ dirsize = dirinodes = dirblocks = 0;
+
+ // A handle to speed up chdir
+ if ((dirfd = open (path,O_RDONLY)) == -1) {
+ fprintf (stderr,"Can't open directory %s\n",path);
+ panic("open failed");
+ }
+
+ if (fchdir (dirfd) == -1) {
+ fprintf (stderr,"Can't fchdir directory %s\n",path);
+ panic("fchdir failed");
+ }
+
+ if (fstat64 (dirfd,&dirst) != 0) {
+ fprintf (stderr,"Can't lstat directory %s\n",path);
+ panic("lstat failed");
+ }
+
+ if ((dir = opendir (".")) == NULL) {
+ fprintf (stderr,"Can't open (opendir) directory %s\n",path);
+ panic("opendir failed");
+ }
+
+
+ /* Walk the directory entries and compute the sum of inodes,
+ * blocks, and disk space used. This code will recursively descend
+ * down the directory structure.
+ */
+
+ while ((ent=readdir(dir))!=NULL){
+ if (lstat64(ent->d_name,&st)==-1){
+ fprintf (stderr,"Can't stat %s/%s\n",path,ent->d_name);
+ warning("lstat failed");
+ continue;
+ }
+
+ dirinodes ++;
+
+ if (S_ISREG(st.st_mode)){
+ if (st.st_nlink > 1){
+ struct stat64 *val;
+ int nlink;
+
+ /* Check hash table if we've seen this inode
+ * before. Note that the hash maintains a
+ * (inode,struct stat) key value pair.
+ */
+
+ val = &st;
+
+ (void) INOPut(&tbl,&st.st_ino,&val);
+
+ /* Note that after the INOPut call "val" refers to the
+ * value entry in the hash table --- not &st. This
+ * means that if the inode has been put into the hash
+ * table before, val will refer to the first st that
+ * was put into the hashtable. Otherwise, if it is
+ * the first time it is put into the hash table, then
+ * val will be equal to this &st.
+ */
+ nlink = val->st_nlink;
+ nlink --;
+
+ /* val refers to value in hash tbale */
+ if (nlink == 0) {
+
+ /* We saw all hard links to this particular inode
+ * as part of this sweep of vdu. So account for
+ * the size and blocks required by the file.
+ */
+
+ dirsize += val->st_size;
+ dirblocks += val->st_blocks;
+
+ /* Do not delete the (ino,val) tuple from the tbl,
+ * as we need to handle the case when we are
+ * double counting a file due to a bind mount.
+ */
+ val->st_nlink = 0;
+
+ } else if (nlink > 0) {
+ val->st_nlink = nlink;
+ } else /* if(nlink < 0) */ {
+ /* We get here when we are double counting nlinks
+ due a bind mount. */
+
+ /* DO NOTHING */
+ }
+ } else {
+ dirsize += st.st_size;
+ dirblocks += st.st_blocks;
+ }
+
+ } else if (S_ISDIR(st.st_mode)) {
+ if ((st.st_dev == dirst.st_dev) &&
+ (strcmp(ent->d_name,".")!=0) &&
+ (strcmp(ent->d_name,"..")!=0)) {
+
+ dirsize += st.st_size;
+ dirblocks += st.st_blocks;
+
+ name = strdup(ent->d_name);
+ if (name==0) {
+ panic("Out of memory\n");
}
- close (dirfd);
+ vdu_onedir(name);
+ free(name);
+ fchdir(dirfd);
+ }
+ } else {
+ // dirsize += st.st_size;
+ // dirblocks += st.st_blocks;
}
- return ret;
+ }
+ closedir (dir);
+ close (dirfd);
+ if (verbose)
+ printf("%16lld %16lld %16lld %s\n",dirinodes, dirblocks, dirsize,foo);
+ inodes += dirinodes;
+ blocks += dirblocks;
+ size += dirsize;
}
-int main (int argc, char *argv[])
+static void
+Count(ino64_t* key, struct stat64* val) {
+ if(val->st_nlink) {
+ blocks += val->st_blocks;
+ size += val->st_size;
+ printf("ino=%16lld nlink=%d\n",val->st_ino, val->st_nlink);
+ }
+}
+
+int
+main (int argc, char **argv)
{
- int ret = -1;
- if (argc < 2){
- fprintf (stderr,"vdu version %s\n",VERSION);
- fprintf (stderr,"vdu directory ...\n\n");
- fprintf (stderr
- ,"Compute the size of a directory tree, ignoring files\n"
- "with more than one link.\n");
- }else{
- int i;
-
- ret = 0;
- for (i=1; i<argc && ret != -1; i++){
- longlong size = 0;
- long ksize;
-
- ret = vdu_onedir (argv[i],&size);
- ksize = size >> 10;
- printf ("%s\t%ldK\n",argv[i],ksize);
- }
+ int startdir, i;
+
+ if (argc < 2){
+ fprintf (stderr,"vdu version %s\n",VERSION);
+ fprintf (stderr,"vdu directory ...\n\n");
+ fprintf (stderr,"Compute the size of a directory tree.\n");
+ }else{
+ if ((startdir = open (".",O_RDONLY)) == -1) {
+ fprintf (stderr,"Can't open current working directory\n");
+ panic("open failed");
}
- return ret;
+
+ /* hash table support for hard link count */
+ (void) Init(&tbl,0,0);
+
+ for (i=1; i<argc; i++){
+ inodes = blocks = size = 0;
+ vdu_onedir (argv[i]);
+
+ printf("%16lld %16lld %16lld %s\n",
+ inodes,
+ blocks>>1,
+ size,
+ argv[i]);
+ if (fchdir (startdir) == -1) {
+ panic("fchdir failed");
+ }
+ }
+
+ if(0) {
+ /* show size & blocks for files with nlinks from outside of dir */
+ inodes = blocks = size = 0;
+ Iterate(&tbl,Count);
+ printf("%16lld %16lld %16lld NOT COUNTED\n",
+ inodes,
+ blocks,
+ size);
+ }
+
+ // Dispose(&tbl); this fails to delete all entries
+ close(startdir);
+ }
+ return 0;
}
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * End:
+ */
git://git.onelab.eu / util-vserver.git / blobdiff