static int open_socket_map(int pid, struct vma_area *vm)
{
VmaEntry *vma = vm->e;
struct file_desc *fd;
struct fdinfo_list_entry *le;
pr_info("Getting packet socket fd for %d:%x\n",
pid, (int)vma->shmid);
fd = find_file_desc_raw(FD_TYPES__PACKETSK, vma->shmid);
if (!fd) {
pr_err("No packet socket %x\n", (int)vma->shmid);
return -1;
}
list_for_each_entry(le, &fd->fd_info_head, desc_list)
if (le->pid == pid) {
int fd;
/*
* Restorer will close the mmap-ed fd
*/
fd = dup(le->fe->fd);
if (!fd) {
pr_perror("Can't dup packet sk");
return -1;
}
vma->fd = fd;
return 0;
}
pr_err("No open packet socket %x by %d\n", (int)vma->shmid, pid);
return -1;
}
static int collect_remap_linked(struct reg_file_info *rfi,
RemapFilePathEntry *rfe)
{
struct file_remap *rm;
struct file_desc *rdesc;
struct reg_file_info *rrfi;
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);
rm->rpath = rrfi->path;
rm->is_dir = false;
rm->uid = -1;
rm->gid = -1;
rm->rmnt_id = rfi->rfe->mnt_id;
rfi->remap = rm;
return 0;
}
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;
}
