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 st.st_dev = st.st_ino = 0;
36 if ((flags & FTW_PHYS) ? lstat(path, &st) : stat(path, &st) < 0) {
37 if (!(flags & FTW_PHYS) && errno==ENOENT && !lstat(path, &st))
39 else if (errno != EACCES) return -1;
41 } else if (S_ISDIR(st.st_mode)) {
42 if (flags & FTW_DEPTH) type = FTW_DP;
44 } else if (S_ISLNK(st.st_mode)) {
45 if (flags & FTW_PHYS) type = FTW_SL;
51 if ((flags & FTW_MOUNT) && h && type != FTW_NS && st.st_dev != h->dev)
57 new.level = h ? h->level+1 : 0;
60 lev.level = new.level;
65 for (k=j; k && path[k]=='/'; k--);
66 for (; k && path[k-1]!='/'; k--);
70 if (type == FTW_D || type == FTW_DP) {
71 dfd = open(path, O_RDONLY);
73 if (dfd < 0 && err == EACCES) type = FTW_DNR;
74 if (!fd_limit) close(dfd);
77 if (!(flags & FTW_DEPTH) && (r=fn(path, &st, type, &lev)))
80 for (; h; h = h->chain)
81 if (h->dev == st.st_dev && h->ino == st.st_ino)
84 if ((type == FTW_D || type == FTW_DP) && fd_limit) {
89 DIR *d = fdopendir(dfd);
92 while ((de = readdir(d))) {
93 if (de->d_name[0] == '.'
95 || (de->d_name[1]=='.'
96 && !de->d_name[2]))) continue;
97 if (strlen(de->d_name) >= PATH_MAX-l) {
103 strcpy(path+j+1, de->d_name);
104 if ((r=do_nftw(path, fn, fd_limit-1, flags, &new))) {
117 if ((flags & FTW_DEPTH) && (r=fn(path, &st, type, &lev)))
123 int nftw(const char *path, int (*fn)(const char *, const struct stat *, int, struct FTW *), int fd_limit, int flags)
127 char pathbuf[PATH_MAX+1];
129 if (fd_limit <= 0) return 0;
133 errno = ENAMETOOLONG;
136 memcpy(pathbuf, path, l+1);
138 pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
139 r = do_nftw(pathbuf, fn, fd_limit, flags, NULL);
140 pthread_setcancelstate(cs, 0);