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Move find_apk_path to Rust

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topjohnwu
2023-06-10 01:40:45 -07:00
parent 40f25f4d56
commit f33f1d25d0
6 changed files with 44 additions and 64 deletions
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59
native/src/base/files.cpp
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@@ -20,48 +20,6 @@ int fd_pathat(int dirfd, const char *name, char *path, size_t size) {
return 0;
}
template <typename Func>
static void post_order_walk(int dirfd, const Func &fn) {
auto dir = xopen_dir(dirfd);
if (!dir) return;
for (dirent *entry; (entry = xreaddir(dir.get()));) {
if (entry->d_type == DT_DIR)
post_order_walk(xopenat(dirfd, entry->d_name, O_RDONLY | O_CLOEXEC), fn);
fn(dirfd, entry);
}
}
enum walk_result {
CONTINUE, SKIP, ABORT
};
template <typename Func>
static walk_result pre_order_walk(int dirfd, const Func &fn) {
auto dir = xopen_dir(dirfd);
if (!dir) {
close(dirfd);
return SKIP;
}
for (dirent *entry; (entry = xreaddir(dir.get()));) {
switch (fn(dirfd, entry)) {
case CONTINUE:
break;
case SKIP:
continue;
case ABORT:
return ABORT;
}
if (entry->d_type == DT_DIR) {
int fd = xopenat(dirfd, entry->d_name, O_RDONLY | O_CLOEXEC);
if (pre_order_walk(fd, fn) == ABORT)
return ABORT;
}
}
return CONTINUE;
}
void mv_path(const char *src, const char *dest) {
file_attr attr;
getattr(src, &attr);
@@ -447,23 +405,6 @@ mmap_data::~mmap_data() {
munmap(_buf, _sz);
}
string find_apk_path(const char *pkg) {
char buf[PATH_MAX];
size_t len = strlen(pkg);
pre_order_walk(xopen("/data/app", O_RDONLY), [&](int dfd, dirent *entry) -> walk_result {
if (entry->d_type != DT_DIR)
return SKIP;
if (strncmp(entry->d_name, pkg, len) == 0 && entry->d_name[len] == '-') {
fd_pathat(dfd, entry->d_name, buf, sizeof(buf));
return ABORT;
} else if (strncmp(entry->d_name, "~~", 2) == 0) {
return CONTINUE;
} else return SKIP;
});
string path(buf);
return path.append("/base.apk");
}
string resolve_preinit_dir(const char *base_dir) {
string dir = base_dir;
if (access((dir + "/unencrypted").data(), F_OK) == 0) {