const char *devname(dev_t devno)
{
static char namebuf[sizeof(DEV_PATH) + MAXNAMLEN + 2];
static DIR dp;
struct dirent *entry;
struct stat fstat;
if (opendir_r(&dp, DEV_PATH) != (DIR *) NULL) {
while ((entry = readdir(&dp)) != (struct dirent *) NULL) {
sprintf(namebuf, "%s/%s", DEV_PATH, entry->d_name);
if (stat(namebuf, &fstat) != 0)
continue;
if (!S_ISBLK(fstat.st_mode))
continue;
if (fstat.st_rdev != devno)
continue;
closedir_r(&dp);
return namebuf;
}
}
closedir_r(&dp);
sprintf(namebuf, "%d", devno);
return namebuf;
}
/*
* dodir - process the directory d. Return the long size (in blocks)
* of d and its descendants.
*/
long dodir(char *d, int thislev, dev_t dev)
{
int maybe_print;
struct stat s;
long total;
DIR dir;
struct dirent *entry;
static char dent[LINELEN];
if (lstat(d, &s) < 0) {
fprintf(stderr, "%s: %s: %s\n", prog, d, strerror(errno));
return 0L;
}
if (s.st_dev != dev && dev != 0 && crosschk)
return 0L;
total = s.st_size;
if (kbytes)
total = (total + 1023L) / 1024L;
else
total = (total + (long) (BLOCK_SIZE - 1L)) / (long) BLOCK_SIZE;
switch (s.st_mode & S_IFMT) {
case S_IFDIR:
/*
* Directories should not be linked except to "." and "..", so this
* directory should not already have been done.
*/
maybe_print = !silent;
if (opendir_r(&dir, d) == NULL) break;
while ((entry = readdir(&dir)) != NULL) {
if (strcmp(entry->d_name, ".") == 0 ||
strcmp(entry->d_name, "..") == 0)
continue;
if (!makedname(d, entry->d_name, dent, sizeof(dent)))
continue;
total += dodir(dent, thislev - 1, s.st_dev);
}
closedir_r(&dir);
break;
case S_IFBLK:
case S_IFCHR:
/* st_size for special files is not related to blocks used. */
total = 0L;
/* Fall through. */
default:
if (s.st_nlink > 1 && done(s.st_dev, s.st_ino, s.st_nlink))
return 0L;
maybe_print = all;
break;
}
if (thislev >= levels || (maybe_print && thislev >= 0))
printf("%ld\t%s\n", total, d);
return (total);
}