Exemplos de mntns_get_root_by_mnt_id em C++ (Cpp)

Exemplo n.º 1

Arquivo: files-reg.c Projeto: 8472/criu

static int open_remap_linked(struct reg_file_info *rfi,
		RemapFilePathEntry *rfe)
{
	struct file_remap *rm;
	struct file_desc *rdesc;
	struct reg_file_info *rrfi;
	uid_t owner = -1;

	rdesc = find_file_desc_raw(FD_TYPES__REG, rfe->remap_id);
	if (!rdesc) {
		pr_err("Can't find target file %x\n", rfe->remap_id);
		return -1;
	}

	rm = xmalloc(sizeof(*rm));
	if (!rm)
		return -1;

	rrfi = container_of(rdesc, struct reg_file_info, d);
	pr_info("Remapped %s -> %s\n", rfi->path, rrfi->path);

	if (root_ns_mask & CLONE_NEWUSER) {
		int rfd;
		struct stat st;

		rfd = mntns_get_root_by_mnt_id(rfi->rfe->mnt_id);
		if (fstatat(rfd, rrfi->path, &st, AT_SYMLINK_NOFOLLOW)) {
			pr_perror("Can't get owner of link remap %s", rrfi->path);
			xfree(rm);
			return -1;
		}

		owner = st.st_uid;
	}

	rm->rpath = rrfi->path;
	rm->users = 0;
	rm->is_dir = false;
	rm->owner = owner;
	rm->rmnt_id = rfi->rfe->mnt_id;
	rfi->remap = rm;
	return 0;
}

Exemplo n.º 2

Arquivo: files-reg.c Projeto: adrianreber/criu

static int open_remap_linked(struct reg_file_info *rfi,
		RemapFilePathEntry *rfe)
{
	if (root_ns_mask & CLONE_NEWUSER) {
		int rfd;
		struct stat st;

		rfd = mntns_get_root_by_mnt_id(rfi->rfe->mnt_id);
		if (fstatat(rfd, rfi->remap->rpath, &st, AT_SYMLINK_NOFOLLOW)) {
			pr_perror("Can't get owner of link remap %s", rfi->remap->rpath);
			return -1;
		}

		rfi->remap->uid = st.st_uid;
		rfi->remap->gid = st.st_gid;
	}

	return 0;
}