13 struct history *chain;
21 #define dirfd(d) (*(int *)d)
23 static int do_nftw(char *path, int (*fn)(const char *, const struct stat *, int, struct FTW *), int fd_limit, int flags, struct history *h)
25 size_t l = strlen(path), j = l && path[l-1]=='/' ? l-1 : l;
34 if ((flags & FTW_PHYS) ? lstat(path, &st) : stat(path, &st) < 0) {
35 if (!(flags & FTW_PHYS) && errno==ENOENT && !lstat(path, &st))
37 else if (errno != EACCES) return -1;
39 } else if (S_ISDIR(st.st_mode)) {
40 if (flags & FTW_DEPTH) type = FTW_DP;
42 } else if (S_ISLNK(st.st_mode)) {
43 if (flags & FTW_PHYS) type = FTW_SL;
49 if ((flags & FTW_MOUNT) && h && st.st_dev != h->dev)
55 new.level = h ? h->level+1 : 0;
58 lev.level = new.level;
63 for (k=j; k && path[k]=='/'; k--);
64 for (; k && path[k-1]!='/'; k--);
68 if (type == FTW_D || type == FTW_DP) {
69 dfd = open(path, O_RDONLY);
71 if (dfd < 0 && err == EACCES) type = FTW_DNR;
72 if (!fd_limit) close(dfd);
75 if (!(flags & FTW_DEPTH) && (r=fn(path, &st, type, &lev)))
78 for (; h; h = h->chain)
79 if (h->dev == st.st_dev && h->ino == st.st_ino)
82 if ((type == FTW_D || type == FTW_DP) && fd_limit) {
87 DIR *d = fdopendir(dfd);
90 while ((de = readdir(d))) {
91 if (de->d_name[0] == '.'
93 || (de->d_name[1]=='.'
94 && !de->d_name[2]))) continue;
95 if (strlen(de->d_name) >= PATH_MAX-l) {
101 strcpy(path+j+1, de->d_name);
102 if ((r=do_nftw(path, fn, fd_limit-1, flags, &new))) {
115 if ((flags & FTW_DEPTH) && (r=fn(path, &st, type, &lev)))
121 int nftw(const char *path, int (*fn)(const char *, const struct stat *, int, struct FTW *), int fd_limit, int flags)
125 char pathbuf[PATH_MAX+1];
127 if (fd_limit <= 0) return 0;
131 errno = ENAMETOOLONG;
134 memcpy(pathbuf, path, l+1);
136 pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
137 r = do_nftw(pathbuf, fn, fd_limit, flags, NULL);
138 pthread_setcancelstate(cs, 0);
142 weak_alias(nftw, nftw64);