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Diffstat (limited to 'lib/fstree/fstree_from_dir.c')
-rw-r--r--lib/fstree/fstree_from_dir.c493
1 files changed, 0 insertions, 493 deletions
diff --git a/lib/fstree/fstree_from_dir.c b/lib/fstree/fstree_from_dir.c
deleted file mode 100644
index 01f331d..0000000
--- a/lib/fstree/fstree_from_dir.c
+++ /dev/null
@@ -1,493 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * fstree_from_dir.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "config.h"
-#include "fstree.h"
-
-#include <dirent.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-
-#if defined(_WIN32) || defined(__WINDOWS__)
-#define UNIX_EPOCH_ON_W32 11644473600UL
-#define W32_TICS_PER_SEC 10000000UL
-
-static sqfs_u32 w32time_to_sqfs_time(const FILETIME *ft)
-{
- sqfs_u64 w32ts;
-
- w32ts = ft->dwHighDateTime;
- w32ts <<= 32UL;
- w32ts |= ft->dwLowDateTime;
-
- w32ts /= W32_TICS_PER_SEC;
-
- if (w32ts <= UNIX_EPOCH_ON_W32)
- return 0;
-
- w32ts -= UNIX_EPOCH_ON_W32;
-
- return (w32ts < 0x0FFFFFFFFUL) ? w32ts : 0xFFFFFFFF;
-}
-
-static int add_node(fstree_t *fs, tree_node_t *root,
- scan_node_callback cb, void *user,
- unsigned int flags,
- const LPWIN32_FIND_DATAW entry)
-{
- tree_node_t *n;
- DWORD length;
-
- if (entry->cFileName[0] == '.') {
- if (entry->cFileName[1] == '\0')
- return 0;
-
- if (entry->cFileName[1] == '.' && entry->cFileName[2] == '\0')
- return 0;
- }
-
- length = WideCharToMultiByte(CP_UTF8, 0, entry->cFileName,
- -1, NULL, 0, NULL, NULL);
- if (length <= 0) {
- w32_perror("converting path to UTF-8");
- return -1;
- }
-
- n = calloc(1, sizeof(*n) + length + 1);
- if (n == NULL) {
- fprintf(stderr, "creating tree node: out-of-memory\n");
- return -1;
- }
-
- n->name = (char *)n->payload;
- WideCharToMultiByte(CP_UTF8, 0, entry->cFileName, -1,
- n->name, length + 1, NULL, NULL);
-
- if (entry->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
- if (flags & DIR_SCAN_NO_DIR) {
- free(n);
- return 0;
- }
-
- n->mode = S_IFDIR | 0755;
- } else {
- if (flags & DIR_SCAN_NO_FILE) {
- free(n);
- return 0;
- }
-
- n->mode = S_IFREG | 0644;
- }
-
- if (cb != NULL) {
- int ret = cb(user, fs, n);
-
- if (ret != 0) {
- free(n);
- return ret < 0 ? ret : 0;
- }
- }
-
- if (flags & DIR_SCAN_KEEP_TIME) {
- n->mod_time = w32time_to_sqfs_time(&(entry->ftLastWriteTime));
- } else {
- n->mod_time = fs->defaults.st_mtime;
- }
-
- fstree_insert_sorted(root, n);
- return 0;
-}
-
-static int scan_dir(fstree_t *fs, tree_node_t *root,
- const char *path, const WCHAR *wpath,
- scan_node_callback cb, void *user,
- unsigned int flags)
-{
- WIN32_FIND_DATAW entry;
- HANDLE dirhnd;
-
- dirhnd = FindFirstFileW(wpath, &entry);
-
- if (dirhnd == INVALID_HANDLE_VALUE)
- goto fail_perror;
-
- do {
- if (add_node(fs, root, cb, user, flags, &entry))
- goto fail;
- } while (FindNextFileW(dirhnd, &entry));
-
- if (GetLastError() != ERROR_NO_MORE_FILES)
- goto fail_perror;
-
- FindClose(dirhnd);
- return 0;
-fail_perror:
- w32_perror(path);
-fail:
- if (dirhnd != INVALID_HANDLE_VALUE)
- FindClose(dirhnd);
- return -1;
-}
-
-int fstree_from_dir(fstree_t *fs, tree_node_t *root,
- const char *path, scan_node_callback cb,
- void *user, unsigned int flags)
-{
- WCHAR *wpath = NULL, *new = NULL;
- size_t len, newlen;
- tree_node_t *n;
-
- /* path -> to_wchar(path) + L"\*" */
- wpath = path_to_windows(path);
- if (wpath == NULL) {
- fprintf(stderr, "%s: allocation failure.\n", path);
- return -1;
- }
-
- for (len = 0; wpath[len] != '\0'; ++len)
- ;
-
- newlen = len + 1;
-
- if (len > 0 && wpath[len - 1] != '\\')
- newlen += 1;
-
- new = realloc(wpath, sizeof(wpath[0]) * (newlen + 1));
- if (new == NULL) {
- fprintf(stderr, "%s: allocation failure.\n", path);
- goto fail;
- }
-
- wpath = new;
-
- if (len > 0 && wpath[len - 1] != '\\')
- wpath[len++] = '\\';
-
- wpath[len++] = '*';
- wpath[len++] = '\0';
-
- /* scan directory contents */
- if (scan_dir(fs, root, path, wpath, cb, user, flags))
- goto fail;
-
- free(wpath);
- wpath = NULL;
-
- /* recursion step */
- if (flags & DIR_SCAN_NO_RECURSION)
- return 0;
-
- for (n = root->data.dir.children; n != NULL; n = n->next) {
- if (!S_ISDIR(n->mode))
- continue;
-
- if (fstree_from_subdir(fs, n, path, n->name, cb, user, flags))
- return -1;
- }
-
- return 0;
-fail:
- free(wpath);
- return -1;
-}
-
-int fstree_from_subdir(fstree_t *fs, tree_node_t *root,
- const char *path, const char *subdir,
- scan_node_callback cb, void *user,
- unsigned int flags)
-{
- size_t len, plen, slen;
- WCHAR *wpath = NULL;
- char *temp = NULL;
- tree_node_t *n;
-
- plen = strlen(path);
- slen = subdir == NULL ? 0 : strlen(subdir);
-
- if (slen == 0)
- return fstree_from_dir(fs, root, path, cb, user, flags);
-
- len = plen + 1 + slen + 2;
-
- temp = calloc(1, len + 1);
- if (temp == NULL) {
- fprintf(stderr, "%s/%s: allocation failure.\n", path, subdir);
- return -1;
- }
-
- memcpy(temp, path, plen);
- temp[plen] = '/';
- memcpy(temp + plen + 1, subdir, slen);
- temp[plen + 1 + slen ] = '/';
- temp[plen + 1 + slen + 1] = '*';
- temp[plen + 1 + slen + 2] = '\0';
-
- wpath = path_to_windows(temp);
- if (wpath == NULL) {
- fprintf(stderr, "%s: allocation failure.\n", temp);
- goto fail;
- }
-
- if (scan_dir(fs, root, temp, wpath, cb, user, flags))
- goto fail;
-
- free(wpath);
- wpath = NULL;
-
- if (flags & DIR_SCAN_NO_RECURSION) {
- free(temp);
- return 0;
- }
-
- temp[plen + 1 + slen] = '\0';
-
- for (n = root->data.dir.children; n != NULL; n = n->next) {
- if (!S_ISDIR(n->mode))
- continue;
-
- if (fstree_from_subdir(fs, n, temp, n->name, cb, user, flags))
- goto fail;
- }
-
- free(temp);
- return 0;
-fail:
- free(temp);
- free(wpath);
- return -1;
-
-}
-#else
-static void discard_node(tree_node_t *root, tree_node_t *n)
-{
- tree_node_t *it;
-
- if (n == root->data.dir.children) {
- root->data.dir.children = n->next;
- } else {
- it = root->data.dir.children;
-
- while (it != NULL && it->next != n)
- it = it->next;
-
- if (it != NULL)
- it->next = n->next;
- }
-
- free(n);
-}
-
-static int populate_dir(int dir_fd, fstree_t *fs, tree_node_t *root,
- dev_t devstart, scan_node_callback cb,
- void *user, unsigned int flags)
-{
- char *extra = NULL;
- struct dirent *ent;
- int ret, childfd;
- struct stat sb;
- tree_node_t *n;
- DIR *dir;
-
- dir = fdopendir(dir_fd);
- if (dir == NULL) {
- perror("fdopendir");
- close(dir_fd);
- return -1;
- }
-
- /* XXX: fdopendir can dup and close dir_fd internally
- and still be compliant with the spec. */
- dir_fd = dirfd(dir);
-
- for (;;) {
- errno = 0;
- ent = readdir(dir);
-
- if (ent == NULL) {
- if (errno) {
- perror("readdir");
- goto fail;
- }
- break;
- }
-
- if (!strcmp(ent->d_name, "..") || !strcmp(ent->d_name, "."))
- continue;
-
- if (fstatat(dir_fd, ent->d_name, &sb, AT_SYMLINK_NOFOLLOW)) {
- perror(ent->d_name);
- goto fail;
- }
-
- switch (sb.st_mode & S_IFMT) {
- case S_IFSOCK:
- if (flags & DIR_SCAN_NO_SOCK)
- continue;
- break;
- case S_IFLNK:
- if (flags & DIR_SCAN_NO_SLINK)
- continue;
- break;
- case S_IFREG:
- if (flags & DIR_SCAN_NO_FILE)
- continue;
- break;
- case S_IFBLK:
- if (flags & DIR_SCAN_NO_BLK)
- continue;
- break;
- case S_IFCHR:
- if (flags & DIR_SCAN_NO_CHR)
- continue;
- break;
- case S_IFIFO:
- if (flags & DIR_SCAN_NO_FIFO)
- continue;
- break;
- default:
- break;
- }
-
- if ((flags & DIR_SCAN_ONE_FILESYSTEM) && sb.st_dev != devstart)
- continue;
-
- if (S_ISLNK(sb.st_mode)) {
- size_t size;
-
- if ((sizeof(sb.st_size) > sizeof(size_t)) &&
- sb.st_size > SIZE_MAX) {
- errno = EOVERFLOW;
- goto fail_rdlink;
- }
-
- if (SZ_ADD_OV((size_t)sb.st_size, 1, &size)) {
- errno = EOVERFLOW;
- goto fail_rdlink;
- }
-
- extra = calloc(1, size);
- if (extra == NULL)
- goto fail_rdlink;
-
- if (readlinkat(dir_fd, ent->d_name,
- extra, (size_t)sb.st_size) < 0) {
- goto fail_rdlink;
- }
-
- extra[sb.st_size] = '\0';
- }
-
- if (!(flags & DIR_SCAN_KEEP_TIME))
- sb.st_mtime = fs->defaults.st_mtime;
-
- if (S_ISDIR(sb.st_mode) && (flags & DIR_SCAN_NO_DIR)) {
- n = fstree_get_node_by_path(fs, root, ent->d_name,
- false, false);
- if (n == NULL)
- continue;
-
- ret = 0;
- } else {
- n = fstree_mknode(root, ent->d_name,
- strlen(ent->d_name), extra, &sb);
- if (n == NULL) {
- perror("creating tree node");
- goto fail;
- }
-
- ret = (cb == NULL) ? 0 : cb(user, fs, n);
- }
-
- free(extra);
- extra = NULL;
-
- if (ret < 0)
- goto fail;
-
- if (ret > 0) {
- discard_node(root, n);
- continue;
- }
-
- if (S_ISDIR(n->mode) && !(flags & DIR_SCAN_NO_RECURSION)) {
- childfd = openat(dir_fd, n->name, O_DIRECTORY |
- O_RDONLY | O_CLOEXEC);
- if (childfd < 0) {
- perror(n->name);
- goto fail;
- }
-
- if (populate_dir(childfd, fs, n, devstart,
- cb, user, flags)) {
- goto fail;
- }
- }
- }
-
- closedir(dir);
- return 0;
-fail_rdlink:
- perror("readlink");
-fail:
- closedir(dir);
- free(extra);
- return -1;
-}
-
-int fstree_from_subdir(fstree_t *fs, tree_node_t *root,
- const char *path, const char *subdir,
- scan_node_callback cb, void *user,
- unsigned int flags)
-{
- struct stat sb;
- int fd, subfd;
-
- if (!S_ISDIR(root->mode)) {
- fprintf(stderr,
- "scanning %s/%s into %s: target is not a directory\n",
- path, subdir == NULL ? "" : subdir, root->name);
- return -1;
- }
-
- fd = open(path, O_DIRECTORY | O_RDONLY | O_CLOEXEC);
- if (fd < 0) {
- perror(path);
- return -1;
- }
-
- if (subdir != NULL) {
- subfd = openat(fd, subdir, O_DIRECTORY | O_RDONLY | O_CLOEXEC);
-
- if (subfd < 0) {
- fprintf(stderr, "%s/%s: %s\n", path, subdir,
- strerror(errno));
- close(fd);
- return -1;
- }
-
- close(fd);
- fd = subfd;
- }
-
- if (fstat(fd, &sb)) {
- fprintf(stderr, "%s/%s: %s\n", path,
- subdir == NULL ? "" : subdir,
- strerror(errno));
- close(fd);
- return -1;
- }
-
- return populate_dir(fd, fs, root, sb.st_dev, cb, user, flags);
-}
-
-int fstree_from_dir(fstree_t *fs, tree_node_t *root,
- const char *path, scan_node_callback cb,
- void *user, unsigned int flags)
-{
- return fstree_from_subdir(fs, root, path, NULL, cb, user, flags);
-}
-#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 07:22:47 +0000