109 lines
2.4 KiB
C
109 lines
2.4 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "../fs.h"
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#include "../util.h"
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int recurse_status = 0;
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void
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recurse(int dirfd, const char *name, void *data, struct recursor *r)
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{
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struct dirent *d;
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struct history *new, *h;
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struct stat st, dst;
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DIR *dp;
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int flags = 0, fd;
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size_t pathlen = r->pathlen;
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if (dirfd == AT_FDCWD)
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pathlen = estrlcpy(r->path, name, sizeof(r->path));
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if (r->follow == 'P' || (r->follow == 'H' && r->depth))
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flags |= AT_SYMLINK_NOFOLLOW;
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if (fstatat(dirfd, name, &st, flags) < 0) {
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if (!(r->flags & SILENT)) {
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weprintf("stat %s:", r->path);
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recurse_status = 1;
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}
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return;
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}
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if (!S_ISDIR(st.st_mode)) {
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r->fn(dirfd, name, &st, data, r);
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return;
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}
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new = emalloc(sizeof(struct history));
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new->prev = r->hist;
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r->hist = new;
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new->dev = st.st_dev;
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new->ino = st.st_ino;
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for (h = new->prev; h; h = h->prev)
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if (h->ino == st.st_ino && h->dev == st.st_dev)
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return;
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if (!r->depth && (r->flags & DIRFIRST))
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r->fn(dirfd, name, &st, data, r);
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if (!r->maxdepth || r->depth + 1 < r->maxdepth) {
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fd = openat(dirfd, name, O_RDONLY | O_CLOEXEC | O_DIRECTORY);
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if (fd < 0) {
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weprintf("open %s:", r->path);
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recurse_status = 1;
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}
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if (!(dp = fdopendir(fd))) {
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if (!(r->flags & SILENT)) {
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weprintf("fdopendir:");
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recurse_status = 1;
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}
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return;
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}
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if (r->path[pathlen - 1] != '/')
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r->path[pathlen++] = '/';
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if (r->follow == 'H')
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flags |= AT_SYMLINK_NOFOLLOW;
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while ((d = readdir(dp))) {
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if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
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continue;
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r->pathlen = pathlen + estrlcpy(r->path + pathlen, d->d_name, sizeof(r->path) - pathlen);
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if (fstatat(fd, d->d_name, &dst, flags) < 0) {
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if (!(r->flags & SILENT)) {
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weprintf("stat %s:", r->path);
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recurse_status = 1;
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}
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} else if ((r->flags & SAMEDEV) && dst.st_dev != st.st_dev) {
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continue;
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} else {
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r->depth++;
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r->fn(fd, d->d_name, &dst, data, r);
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r->depth--;
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}
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}
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r->path[pathlen - 1] = '\0';
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r->pathlen = pathlen - 1;
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closedir(dp);
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}
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if (!r->depth) {
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if (!(r->flags & DIRFIRST))
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r->fn(dirfd, name, &st, data, r);
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while (r->hist) {
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h = r->hist;
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r->hist = r->hist->prev;
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free(h);
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}
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}
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}
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