Cleanup and add more xwraps
This commit is contained in:
topjohnwu
parent
cddeaffada
commit
594a67fe28
@ -145,7 +145,7 @@ static void exec_common_script(const char* stage) {
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struct dirent *entry;
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snprintf(buf, PATH_MAX, "%s/%s.d", COREDIR, stage);
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if (!(dir = opendir(buf)))
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if (!(dir = xopendir(buf)))
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return;
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while ((entry = xreaddir(dir))) {
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@ -190,7 +190,7 @@ static void construct_tree(const char *module, struct node_entry *parent) {
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char *parent_path = get_full_path(parent);
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snprintf(buf, PATH_MAX, "%s/%s%s", MOUNTPOINT, module, parent_path);
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if (!(dir = opendir(buf)))
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if (!(dir = xopendir(buf)))
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goto cleanup;
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while ((entry = xreaddir(dir))) {
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@ -258,7 +258,7 @@ static void clone_skeleton(struct node_entry *node) {
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// Clone the structure
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char *full_path = get_full_path(node);
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snprintf(buf, PATH_MAX, "%s%s", MIRRDIR, full_path);
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if (!(dir = opendir(buf)))
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if (!(dir = xopendir(buf)))
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goto cleanup;
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while ((entry = xreaddir(dir))) {
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if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
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@ -278,7 +278,7 @@ static void clone_skeleton(struct node_entry *node) {
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xstat(full_path, &s);
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getfilecon(full_path, &con);
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LOGI("tmpfs: %s\n", full_path);
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mount("tmpfs", full_path, "tmpfs", 0, NULL);
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xmount("tmpfs", full_path, "tmpfs", 0, NULL);
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chmod(full_path, s.st_mode & 0777);
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chown(full_path, s.st_uid, s.st_gid);
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setfilecon(full_path, con);
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@ -405,11 +405,11 @@ static void daemon_init() {
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// Setup links under /sbin
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xmount(NULL, "/", NULL, MS_REMOUNT, NULL);
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xmkdir("/root", 0755);
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xchmod("/root", 0755);
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chmod("/root", 0755);
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root = xopen("/root", O_RDONLY | O_CLOEXEC);
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sbin = xopen("/sbin", O_RDONLY | O_CLOEXEC);
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dir = fdopendir(sbin);
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while((entry = readdir(dir))) {
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dir = xfdopendir(sbin);
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while((entry = xreaddir(dir))) {
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if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0) continue;
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linkat(sbin, entry->d_name, root, entry->d_name, 0);
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if (strcmp(entry->d_name, "magisk") == 0)
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@ -420,16 +420,16 @@ static void daemon_init() {
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sbin = xopen("/sbin", O_RDONLY | O_CLOEXEC);
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fchmod(sbin, 0755);
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fsetfilecon(sbin, "u:object_r:rootfs:s0");
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dir = fdopendir(root);
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while((entry = readdir(dir))) {
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dir = xfdopendir(root);
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while((entry = xreaddir(dir))) {
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if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0) continue;
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snprintf(target, sizeof(target), "/root/%s", entry->d_name);
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snprintf(linkpath, sizeof(linkpath), "/sbin/%s", entry->d_name);
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symlink(target, linkpath);
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xsymlink(target, linkpath);
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}
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for (int i = 0; applet[i]; ++i) {
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snprintf(linkpath, sizeof(linkpath), "/sbin/%s", applet[i]);
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symlink("/root/magisk", linkpath);
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xsymlink("/root/magisk", linkpath);
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}
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xmkdir("/magisk", 0755);
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xmount(NULL, "/", NULL, MS_REMOUNT | MS_RDONLY, NULL);
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@ -476,20 +476,20 @@ static void daemon_init() {
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}
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vec_deep_destroy(&mounts);
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if (!seperate_vendor) {
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symlink(MIRRDIR "/system/vendor", MIRRDIR "/vendor");
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xsymlink(MIRRDIR "/system/vendor", MIRRDIR "/vendor");
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#ifdef MAGISK_DEBUG
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LOGI("link: %s -> %s\n", MIRRDIR "/system/vendor", MIRRDIR "/vendor");
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#else
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LOGI("link: %s\n", MIRRDIR "/vendor");
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#endif
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}
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mkdir_p(MIRRDIR "/bin", 0755);
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xmkdir_p(MIRRDIR "/bin", 0755);
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bind_mount(DATABIN, MIRRDIR "/bin");
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LOGI("* Setting up internal busybox");
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mkdir_p(BBPATH, 0755);
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xmkdir_p(BBPATH, 0755);
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exec_command_sync(MIRRDIR "/bin/busybox", "--install", "-s", BBPATH, NULL);
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symlink(MIRRDIR "/bin/busybox", BBPATH "/busybox");
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xsymlink(MIRRDIR "/bin/busybox", BBPATH "/busybox");
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}
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static int prepare_img() {
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@ -569,7 +569,7 @@ void fix_filecon() {
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****************/
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static void unblock_boot_process() {
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close(open(UNBLOCKFILE, O_RDONLY | O_CREAT));
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close(xopen(UNBLOCKFILE, O_RDONLY | O_CREAT));
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pthread_exit(NULL);
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}
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@ -689,7 +689,7 @@ void post_fs_data(int client) {
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if (access(buf, F_OK) == 0) {
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snprintf(buf2, PATH_MAX, "%s/%s/vendor", MOUNTPOINT, module);
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unlink(buf2);
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symlink(buf, buf2);
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xsymlink(buf, buf2);
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}
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construct_tree(module, sys_root);
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}
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@ -729,7 +729,6 @@ core_only:
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auto_start_magiskhide();
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unblock:
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unblock_boot_process();
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}
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@ -155,7 +155,7 @@ void start_daemon() {
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dump_policydb(SELINUX_LOAD);
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// Continue the larger patch in another thread, we will join later
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pthread_create(&sepol_patch, NULL, large_sepol_patch, NULL);
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xpthread_create(&sepol_patch, NULL, large_sepol_patch, NULL);
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struct sockaddr_un sun;
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fd = setup_socket(&sun);
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@ -170,7 +170,7 @@ void start_daemon() {
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unlock_blocks();
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// Notifiy init the daemon is started
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close(open(UNBLOCKFILE, O_RDONLY));
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close(xopen(UNBLOCKFILE, O_RDONLY));
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// Loop forever to listen for requests
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while(1) {
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@ -187,25 +187,19 @@ void start_daemon() {
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int connect_daemon() {
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struct sockaddr_un sun;
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int fd = setup_socket(&sun);
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if (connect(fd, (struct sockaddr*) &sun, sizeof(sun))) {
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if (xconnect(fd, (struct sockaddr*) &sun, sizeof(sun))) {
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// If we cannot access the daemon, we start a daemon in the child process if possible
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if (getuid() != UID_ROOT || getgid() != UID_ROOT) {
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fprintf(stderr, "Starting daemon requires root: %s\n", strerror(errno));
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PLOGE("start daemon");
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fprintf(stderr, "No daemon is currently running!\n");
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exit(1);
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}
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switch (fork()) {
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case -1:
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PLOGE("fork");
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case 0:
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if (xfork() == 0) {
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LOGD("client: connect fail, try launching new daemon process\n");
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close(fd);
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xsetsid();
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start_daemon();
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break;
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default:
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break;
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}
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do {
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@ -24,12 +24,14 @@ FILE *xfdopen(int fd, const char *mode);
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#define xopen(...) GET_MACRO(__VA_ARGS__, xopen3, xopen2)(__VA_ARGS__)
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int xopen2(const char *pathname, int flags);
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int xopen3(const char *pathname, int flags, mode_t mode);
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int xopenat(int dirfd, const char *pathname, int flags);
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ssize_t xwrite(int fd, const void *buf, size_t count);
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ssize_t xread(int fd, void *buf, size_t count);
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ssize_t xxread(int fd, void *buf, size_t count);
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int xpipe2(int pipefd[2], int flags);
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int xsetns(int fd, int nstype);
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DIR *xopendir(const char *name);
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DIR *xfdopendir(int fd);
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struct dirent *xreaddir(DIR *dirp);
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pid_t xsetsid();
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int xsocket(int domain, int type, int protocol);
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@ -49,19 +51,21 @@ int xstat(const char *pathname, struct stat *buf);
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int xlstat(const char *pathname, struct stat *buf);
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int xdup2(int oldfd, int newfd);
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ssize_t xreadlink(const char *pathname, char *buf, size_t bufsiz);
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ssize_t xreadlinkat(int dirfd, const char *pathname, char *buf, size_t bufsiz);
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int xsymlink(const char *target, const char *linkpath);
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int xmount(const char *source, const char *target,
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const char *filesystemtype, unsigned long mountflags,
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const void *data);
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int xumount(const char *target);
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int xumount2(const char *target, int flags);
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int xchmod(const char *pathname, mode_t mode);
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int xrename(const char *oldpath, const char *newpath);
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int xmkdir(const char *pathname, mode_t mode);
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int xmkdir_p(const char *pathname, mode_t mode);
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int xmkdirat(int dirfd, const char *pathname, mode_t mode);
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void *xmmap(void *addr, size_t length, int prot, int flags,
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int fd, off_t offset);
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ssize_t xsendfile(int out_fd, int in_fd, off_t *offset, size_t count);
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int xmkdir_p(const char *pathname, mode_t mode);
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pid_t xfork();
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// misc.c
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@ -50,16 +50,16 @@ void rm_rf(const char *path) {
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void frm_rf(int dirfd) {
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struct dirent *entry;
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int newfd;
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DIR *dir = fdopendir(dirfd);
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DIR *dir = xfdopendir(dirfd);
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while ((entry = readdir(dir))) {
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while ((entry = xreaddir(dir))) {
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if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
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continue;
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if (is_excl(entry->d_name))
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continue;
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switch (entry->d_type) {
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case DT_DIR:
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newfd = openat(dirfd, entry->d_name, O_RDONLY | O_CLOEXEC);
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newfd = xopenat(dirfd, entry->d_name, O_RDONLY | O_CLOEXEC);
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frm_rf(newfd);
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close(newfd);
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unlinkat(dirfd, entry->d_name, AT_REMOVEDIR);
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@ -88,7 +88,7 @@ void mv_f(const char *source, const char *destination) {
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close(dest);
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} else{
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getattr(source, &a);
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rename(source, destination);
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xrename(source, destination);
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setattr(destination, &a);
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}
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rmdir(source);
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@ -101,8 +101,8 @@ void mv_dir(int src, int dest) {
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int newsrc, newdest;
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struct file_attr a;
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dir = fdopendir(src);
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while ((entry = readdir(dir))) {
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dir = xfdopendir(src);
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while ((entry = xreaddir(dir))) {
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if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
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continue;
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if (is_excl(entry->d_name))
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@ -110,9 +110,9 @@ void mv_dir(int src, int dest) {
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getattrat(src, entry->d_name, &a);
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switch (entry->d_type) {
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case DT_DIR:
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mkdirat(dest, entry->d_name, a.st.st_mode & 0777);
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newsrc = openat(src, entry->d_name, O_RDONLY | O_CLOEXEC);
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newdest = openat(dest, entry->d_name, O_RDONLY | O_CLOEXEC);
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xmkdirat(dest, entry->d_name, a.st.st_mode & 0777);
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newsrc = xopenat(src, entry->d_name, O_RDONLY | O_CLOEXEC);
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newdest = xopenat(dest, entry->d_name, O_RDONLY | O_CLOEXEC);
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fsetattr(newdest, &a);
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mv_dir(newsrc, newdest);
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close(newsrc);
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@ -164,11 +164,10 @@ void clone_dir(int src, int dest) {
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DIR *dir;
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int srcfd, destfd, newsrc, newdest;
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char buf[PATH_MAX];
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ssize_t size;
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struct file_attr a;
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dir = fdopendir(src);
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while ((entry = readdir(dir))) {
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dir = xfdopendir(src);
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while ((entry = xreaddir(dir))) {
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if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
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continue;
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if (is_excl(entry->d_name))
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@ -176,25 +175,24 @@ void clone_dir(int src, int dest) {
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getattrat(src, entry->d_name, &a);
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switch (entry->d_type) {
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case DT_DIR:
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mkdirat(dest, entry->d_name, a.st.st_mode & 0777);
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xmkdirat(dest, entry->d_name, a.st.st_mode & 0777);
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setattrat(dest, entry->d_name, &a);
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newsrc = openat(src, entry->d_name, O_RDONLY | O_CLOEXEC);
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newdest = openat(dest, entry->d_name, O_RDONLY | O_CLOEXEC);
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newsrc = xopenat(src, entry->d_name, O_RDONLY | O_CLOEXEC);
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newdest = xopenat(dest, entry->d_name, O_RDONLY | O_CLOEXEC);
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clone_dir(newsrc, newdest);
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close(newsrc);
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close(newdest);
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break;
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case DT_REG:
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destfd = openat(dest, entry->d_name, O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC, a.st.st_mode & 0777);
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srcfd = openat(src, entry->d_name, O_RDONLY | O_CLOEXEC);
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sendfile(destfd, srcfd, 0, a.st.st_size);
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destfd = xopenat(dest, entry->d_name, O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC);
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srcfd = xopenat(src, entry->d_name, O_RDONLY | O_CLOEXEC);
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xsendfile(destfd, srcfd, 0, a.st.st_size);
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fsetattr(destfd, &a);
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close(destfd);
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close(srcfd);
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break;
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case DT_LNK:
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size = readlinkat(src, entry->d_name, buf, sizeof(buf));
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buf[size] = '\0';
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xreadlinkat(src, entry->d_name, buf, sizeof(buf));
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symlinkat(buf, dest, entry->d_name);
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setattrat(dest, entry->d_name, &a);
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break;
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@ -285,15 +283,15 @@ void restorecon(int dirfd, int force) {
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fsetfilecon(dirfd, SYSTEM_CON);
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freecon(con);
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dir = fdopendir(dirfd);
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while ((entry = readdir(dir))) {
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dir = xfdopendir(dirfd);
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while ((entry = xreaddir(dir))) {
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if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
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continue;
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if (entry->d_type == DT_DIR) {
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fd = openat(dirfd, entry->d_name, O_RDONLY | O_CLOEXEC);
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fd = xopenat(dirfd, entry->d_name, O_RDONLY | O_CLOEXEC);
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restorecon(fd, force);
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} else {
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fd = openat(dirfd, entry->d_name, O_PATH | O_NOFOLLOW | O_CLOEXEC);
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fd = xopenat(dirfd, entry->d_name, O_PATH | O_NOFOLLOW | O_CLOEXEC);
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fgetfilecon(fd, &con);
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if (force || strlen(con) == 0 || strcmp(con, UNLABEL_CON) == 0)
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fsetfilecon(fd, SYSTEM_CON);
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@ -164,7 +164,7 @@ int merge_img(const char *source, const char *target) {
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if (access(source, F_OK) == -1)
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return 0;
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if (access(target, F_OK) == -1) {
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rename(source, target);
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xrename(source, target);
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return 0;
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}
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@ -188,7 +188,7 @@ int merge_img(const char *source, const char *target) {
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DIR *dir;
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struct dirent *entry;
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if (!(dir = opendir(SOURCE_TMP)))
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if (!(dir = xopendir(SOURCE_TMP)))
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return 1;
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while ((entry = xreaddir(dir))) {
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if (entry->d_type == DT_DIR) {
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@ -140,12 +140,12 @@ static void proc_name_filter(int pid) {
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char buf[64];
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int fd;
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snprintf(buf, sizeof(buf), "/proc/%d/cmdline", pid);
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if ((fd = open(buf, O_RDONLY)) == -1)
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if (access(buf, R_OK) == -1 || (fd = xopen(buf, O_RDONLY)) == -1)
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return;
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if (fdgets(buf, sizeof(buf), fd) == 0) {
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snprintf(buf, sizeof(buf), "/proc/%d/comm", pid);
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close(fd);
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if ((fd = open(buf, O_RDONLY)) == -1)
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if (access(buf, R_OK) == -1 || (fd = xopen(buf, O_RDONLY)) == -1)
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return;
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fdgets(buf, sizeof(buf), fd);
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}
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@ -169,7 +169,7 @@ void unlock_blocks() {
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if ((dev = xopen("/dev/block", O_RDONLY | O_CLOEXEC)) < 0)
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return;
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dir = fdopendir(dev);
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dir = xfdopendir(dev);
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while((entry = readdir(dir))) {
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if (entry->d_type == DT_BLK) {
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@ -231,7 +231,7 @@ static int v_exec_command(int err, int *fd, void (*setupenv)(struct vector*), co
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envp = environ;
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}
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int pid = fork();
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int pid = xfork();
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if (pid != 0) {
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if (fd && *fd < 0) {
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// Give the read end and close write end
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@ -308,11 +308,11 @@ int switch_mnt_ns(int pid) {
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}
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int fork_dont_care() {
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int pid = fork();
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int pid = xfork();
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if (pid) {
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waitpid(pid, NULL, 0);
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return pid;
|
||||
} else if ((pid = fork())) {
|
||||
} else if ((pid = xfork())) {
|
||||
exit(0);
|
||||
}
|
||||
return 0;
|
||||
|
||||
@ -1,8 +1,8 @@
|
||||
/* xwrap.c - wrappers around existing library functions.
|
||||
*
|
||||
* Functions with the x prefix are wrappers that either succeed or kill the
|
||||
* program with an error message, but never return failure. They usually have
|
||||
* the same arguments and return value as the function they wrap.
|
||||
* Functions with the x prefix are wrappers that either succeed or log the
|
||||
* error message. They usually have the same arguments and return value
|
||||
* as the function they wrap.
|
||||
*
|
||||
*/
|
||||
|
||||
@ -57,6 +57,14 @@ int xopen3(const char *pathname, int flags, mode_t mode) {
|
||||
return fd;
|
||||
}
|
||||
|
||||
int xopenat(int dirfd, const char *pathname, int flags) {
|
||||
int fd = openat(dirfd, pathname, flags);
|
||||
if (fd < 0) {
|
||||
PLOGE("openat: %s", pathname);
|
||||
}
|
||||
return fd;
|
||||
}
|
||||
|
||||
ssize_t xwrite(int fd, const void *buf, size_t count) {
|
||||
int ret = write(fd, buf, count);
|
||||
if (count != ret) {
|
||||
@ -107,6 +115,14 @@ DIR *xopendir(const char *name) {
|
||||
return d;
|
||||
}
|
||||
|
||||
DIR *xfdopendir(int fd) {
|
||||
DIR *d = fdopendir(fd);
|
||||
if (d == NULL) {
|
||||
PLOGE("fdopendir");
|
||||
}
|
||||
return d;
|
||||
}
|
||||
|
||||
struct dirent *xreaddir(DIR *dirp) {
|
||||
errno = 0;
|
||||
struct dirent *e = readdir(dirp);
|
||||
@ -251,7 +267,16 @@ ssize_t xreadlink(const char *pathname, char *buf, size_t bufsiz) {
|
||||
PLOGE("readlink %s", pathname);
|
||||
} else {
|
||||
buf[ret] = '\0';
|
||||
++ret;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
ssize_t xreadlinkat(int dirfd, const char *pathname, char *buf, size_t bufsiz) {
|
||||
ssize_t ret = readlinkat(dirfd, pathname, buf, bufsiz);
|
||||
if (ret == -1) {
|
||||
PLOGE("readlinkat %s", pathname);
|
||||
} else {
|
||||
buf[ret] = '\0';
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
@ -290,14 +315,6 @@ int xumount2(const char *target, int flags) {
|
||||
return ret;
|
||||
}
|
||||
|
||||
int xchmod(const char *pathname, mode_t mode) {
|
||||
int ret = chmod(pathname, mode);
|
||||
if (ret == -1) {
|
||||
PLOGE("chmod %s %u", pathname, mode);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
int xrename(const char *oldpath, const char *newpath) {
|
||||
int ret = rename(oldpath, newpath);
|
||||
if (ret == -1) {
|
||||
@ -314,6 +331,22 @@ int xmkdir(const char *pathname, mode_t mode) {
|
||||
return ret;
|
||||
}
|
||||
|
||||
int xmkdir_p(const char *pathname, mode_t mode) {
|
||||
int ret = mkdir_p(pathname, mode);
|
||||
if (ret == -1) {
|
||||
PLOGE("mkdir_p %s", pathname);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
int xmkdirat(int dirfd, const char *pathname, mode_t mode) {
|
||||
int ret = mkdirat(dirfd, pathname, mode);
|
||||
if (ret == -1 && errno != EEXIST) {
|
||||
PLOGE("mkdirat %s %u", pathname, mode);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
void *xmmap(void *addr, size_t length, int prot, int flags,
|
||||
int fd, off_t offset) {
|
||||
void *ret = mmap(addr, length, prot, flags, fd, offset);
|
||||
@ -331,10 +364,10 @@ ssize_t xsendfile(int out_fd, int in_fd, off_t *offset, size_t count) {
|
||||
return ret;
|
||||
}
|
||||
|
||||
int xmkdir_p(const char *pathname, mode_t mode) {
|
||||
int ret = mkdir_p(pathname, mode);
|
||||
pid_t xfork() {
|
||||
int ret = fork();
|
||||
if (ret == -1) {
|
||||
PLOGE("mkdir_p %s", pathname);
|
||||
PLOGE("fork");
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user