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77
node_modules/@parcel/watcher/src/unix/legacy.cc
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77
node_modules/@parcel/watcher/src/unix/legacy.cc
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#include <string>
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// weird error on linux
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#ifdef __THROW
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#undef __THROW
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#endif
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#define __THROW
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#ifdef _LIBC
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# include <include/sys/stat.h>
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#else
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# include <sys/stat.h>
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#endif
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#include <dirent.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include "../DirTree.hh"
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#include "../shared/BruteForceBackend.hh"
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#define CONVERT_TIME(ts) ((uint64_t)ts.tv_sec * 1000000000 + ts.tv_nsec)
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#if __APPLE__
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#define st_mtim st_mtimespec
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#endif
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#define ISDOT(a) (a[0] == '.' && (!a[1] || (a[1] == '.' && !a[2])))
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void iterateDir(WatcherRef watcher, const std::shared_ptr <DirTree> tree, const char *relative, int parent_fd, const std::string &dirname) {
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int open_flags = (O_RDONLY | O_CLOEXEC | O_DIRECTORY | O_NOCTTY | O_NONBLOCK | O_NOFOLLOW);
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int new_fd = openat(parent_fd, relative, open_flags);
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if (new_fd == -1) {
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if (errno == EACCES) {
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return; // ignore insufficient permissions
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}
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throw WatcherError(strerror(errno), watcher);
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}
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struct stat rootAttributes;
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fstatat(new_fd, ".", &rootAttributes, AT_SYMLINK_NOFOLLOW);
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tree->add(dirname, CONVERT_TIME(rootAttributes.st_mtim), true);
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if (DIR *dir = fdopendir(new_fd)) {
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while (struct dirent *ent = (errno = 0, readdir(dir))) {
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if (ISDOT(ent->d_name)) continue;
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std::string fullPath = dirname + "/" + ent->d_name;
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if (!watcher->isIgnored(fullPath)) {
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struct stat attrib;
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fstatat(new_fd, ent->d_name, &attrib, AT_SYMLINK_NOFOLLOW);
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bool isDir = ent->d_type == DT_DIR;
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if (isDir) {
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iterateDir(watcher, tree, ent->d_name, new_fd, fullPath);
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} else {
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tree->add(fullPath, CONVERT_TIME(attrib.st_mtim), isDir);
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}
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}
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}
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closedir(dir);
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} else {
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close(new_fd);
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}
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if (errno) {
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throw WatcherError(strerror(errno), watcher);
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}
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}
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void BruteForceBackend::readTree(WatcherRef watcher, std::shared_ptr <DirTree> tree) {
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int fd = open(watcher->mDir.c_str(), O_RDONLY);
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if (fd) {
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iterateDir(watcher, tree, ".", fd, watcher->mDir);
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close(fd);
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}
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}
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