* (C) Copyright IBM Corp. 2007, 2008
*
* Authors:
- * Daniel Lezcano <dlezcano at fr.ibm.com>
+ * Daniel Lezcano <daniel.lezcano at free.fr>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef _conf_h
-#define _conf_h
+#ifndef __LXC_CONF_H
+#define __LXC_CONF_H
+
+#include "config.h"
#include <netinet/in.h>
+#include <net/if.h>
#include <sys/param.h>
+#include <sys/types.h>
+#include <stdbool.h>
+
+#include "list.h"
+#include "start.h" /* for lxc_handler */
-#include <lxc/list.h>
+#if HAVE_SCMP_FILTER_CTX
+typedef void * scmp_filter_ctx;
+#endif
enum {
- EMPTY,
- VETH,
- MACVLAN,
- PHYS,
- VLAN,
- MAXCONFTYPE,
+ LXC_NET_EMPTY,
+ LXC_NET_VETH,
+ LXC_NET_MACVLAN,
+ LXC_NET_PHYS,
+ LXC_NET_VLAN,
+ LXC_NET_NONE,
+ LXC_NET_MAXCONFTYPE,
};
/*
*/
struct lxc_inet6dev {
struct in6_addr addr;
- struct in6_addr bcast;
+ struct in6_addr mcast;
struct in6_addr acast;
int prefix;
};
struct ifla_veth {
char *pair; /* pair name */
+ char veth1[IFNAMSIZ]; /* needed for deconf */
};
struct ifla_vlan {
- uint flags;
- uint fmask;
- ushort vid;
- ushort pad;
+ unsigned int flags;
+ unsigned int fmask;
+ unsigned short vid;
+ unsigned short pad;
};
struct ifla_macvlan {
/*
* Defines a structure to configure a network device
- * @link : lxc.network.link, name of bridge or host iface to attach if any
- * @name : lxc.network.name, name of iface on the container side
- * @flags : flag of the network device (IFF_UP, ... )
- * @ipv4 : a list of ipv4 addresses to be set on the network device
- * @ipv6 : a list of ipv6 addresses to be set on the network device
+ * @link : lxc.network.link, name of bridge or host iface to attach if any
+ * @name : lxc.network.name, name of iface on the container side
+ * @flags : flag of the network device (IFF_UP, ... )
+ * @ipv4 : a list of ipv4 addresses to be set on the network device
+ * @ipv6 : a list of ipv6 addresses to be set on the network device
+ * @upscript : a script filename to be executed during interface configuration
+ * @downscript : a script filename to be executed during interface destruction
*/
struct lxc_netdev {
int type;
union netdev_p priv;
struct lxc_list ipv4;
struct lxc_list ipv6;
+ struct in_addr *ipv4_gateway;
+ bool ipv4_gateway_auto;
+ struct in6_addr *ipv6_gateway;
+ bool ipv6_gateway_auto;
+ char *upscript;
+ char *downscript;
};
/*
char *value;
};
+enum idtype {
+ ID_TYPE_UID,
+ ID_TYPE_GID
+};
+
+/*
+ * id_map is an id map entry. Form in confile is:
+ * lxc.id_map = u 0 9800 100
+ * lxc.id_map = u 1000 9900 100
+ * lxc.id_map = g 0 9800 100
+ * lxc.id_map = g 1000 9900 100
+ * meaning the container can use uids and gids 0-99 and 1000-1099,
+ * with [ug]id 0 mapping to [ug]id 9800 on the host, and [ug]id 1000 to
+ * [ug]id 9900 on the host.
+ */
+struct id_map {
+ enum idtype idtype;
+ unsigned long hostid, nsid, range;
+};
+
/*
* Defines a structure containing a pty information for
* virtualizing a tty
struct lxc_pty_info *pty_info;
};
+struct lxc_tty_state;
+
+/*
+ * Defines the structure to store the console information
+ * @peer : the file descriptor put/get console traffic
+ * @name : the file name of the slave pty
+ */
+struct lxc_console {
+ int slave;
+ int master;
+ int peer;
+ struct lxc_pty_info peerpty;
+ struct lxc_epoll_descr *descr;
+ char *path;
+ char *log_path;
+ int log_fd;
+ char name[MAXPATHLEN];
+ struct termios *tios;
+ struct lxc_tty_state *tty_state;
+};
+
+/*
+ * Defines a structure to store the rootfs location, the
+ * optionals pivot_root, rootfs mount paths
+ * @rootfs : a path to the rootfs
+ * @pivot_root : a path to a pivot_root location to be used
+ */
+struct lxc_rootfs {
+ char *path;
+ char *mount;
+ char *pivot;
+ char *options;
+};
+
+/*
+ * Automatic mounts for LXC to perform inside the container
+ */
+enum {
+ LXC_AUTO_PROC_RW = 0x001, /* /proc read-write */
+ LXC_AUTO_PROC_MIXED = 0x002, /* /proc/sys and /proc/sysrq-trigger read-only */
+ LXC_AUTO_PROC_MASK = 0x003,
+
+ LXC_AUTO_SYS_RW = 0x004, /* /sys */
+ LXC_AUTO_SYS_RO = 0x008, /* /sys read-only */
+ LXC_AUTO_SYS_MASK = 0x00C,
+
+ LXC_AUTO_CGROUP_RO = 0x010, /* /sys/fs/cgroup (partial mount, read-only) */
+ LXC_AUTO_CGROUP_RW = 0x020, /* /sys/fs/cgroup (partial mount, read-write) */
+ LXC_AUTO_CGROUP_MIXED = 0x030, /* /sys/fs/cgroup (partial mount, paths r/o, cgroup r/w) */
+ LXC_AUTO_CGROUP_FULL_RO = 0x040, /* /sys/fs/cgroup (full mount, read-only) */
+ LXC_AUTO_CGROUP_FULL_RW = 0x050, /* /sys/fs/cgroup (full mount, read-write) */
+ LXC_AUTO_CGROUP_FULL_MIXED = 0x060, /* /sys/fs/cgroup (full mount, parent r/o, own r/w) */
+ /* These are defined in such a way as to retain
+ * binary compatibility with earlier versions of
+ * this code. If the previous mask is applied,
+ * both of these will default back to the _MIXED
+ * variants, which is safe. */
+ LXC_AUTO_CGROUP_NOSPEC = 0x0B0, /* /sys/fs/cgroup (partial mount, r/w or mixed, depending on caps) */
+ LXC_AUTO_CGROUP_FULL_NOSPEC = 0x0E0, /* /sys/fs/cgroup (full mount, r/w or mixed, depending on caps) */
+ LXC_AUTO_CGROUP_MASK = 0x0F0,
+
+ LXC_AUTO_ALL_MASK = 0x0FF, /* all known settings */
+};
+
/*
* Defines the global container configuration
- * @rootfs : the root directory to run the container
- * @mount : the list of mount points
- * @network : the network configuration
- * @utsname : the container utsname
+ * @rootfs : root directory to run the container
+ * @pivotdir : pivotdir path, if not set default will be used
+ * @mount : list of mount points
+ * @tty : numbers of tty
+ * @pts : new pts instance
+ * @mount_list : list of mount point (alternative to fstab file)
+ * @network : network configuration
+ * @utsname : container utsname
+ * @fstab : path to a fstab file format
+ * @caps : list of the capabilities to drop
+ * @keepcaps : list of the capabilities to keep
+ * @tty_info : tty data
+ * @console : console data
+ * @ttydir : directory (under /dev) in which to create console and ttys
+ * @lsm_aa_profile : apparmor profile to switch to or NULL
+ * @lsm_se_context : selinux type to switch to or NULL
*/
+enum lxchooks {
+ LXCHOOK_PRESTART, LXCHOOK_PREMOUNT, LXCHOOK_MOUNT, LXCHOOK_AUTODEV,
+ LXCHOOK_START, LXCHOOK_POSTSTOP, LXCHOOK_CLONE, NUM_LXC_HOOKS};
+extern char *lxchook_names[NUM_LXC_HOOKS];
+
+struct saved_nic {
+ int ifindex;
+ char *orig_name;
+};
+
struct lxc_conf {
- char *rootfs;
- char *pivotdir;
+ int is_execute;
char *fstab;
int tty;
int pts;
+ int reboot;
+ int need_utmp_watch;
+ int personality;
struct utsname *utsname;
struct lxc_list cgroup;
+ struct lxc_list id_map;
struct lxc_list network;
+ struct saved_nic *saved_nics;
+ int num_savednics;
+ int auto_mounts;
struct lxc_list mount_list;
+ struct lxc_list caps;
+ struct lxc_list keepcaps;
struct lxc_tty_info tty_info;
- char console[MAXPATHLEN];
+ struct lxc_console console;
+ struct lxc_rootfs rootfs;
+ char *ttydir;
+ int close_all_fds;
+ struct lxc_list hooks[NUM_LXC_HOOKS];
+
+ char *lsm_aa_profile;
+ char *lsm_se_context;
+ int tmp_umount_proc;
+ char *seccomp; // filename with the seccomp rules
+#if HAVE_SCMP_FILTER_CTX
+ scmp_filter_ctx *seccomp_ctx;
+#endif
+ int maincmd_fd;
+ int autodev; // if 1, mount and fill a /dev at start
+ int haltsignal; // signal used to halt container
+ int stopsignal; // signal used to hard stop container
+ int kmsg; // if 1, create /dev/kmsg symlink
+ char *rcfile; // Copy of the top level rcfile we read
+
+ // Logfile and logleve can be set in a container config file.
+ // Those function as defaults. The defaults can be overriden
+ // by command line. However we don't want the command line
+ // specified values to be saved on c->save_config(). So we
+ // store the config file specified values here.
+ char *logfile; // the logfile as specifed in config
+ int loglevel; // loglevel as specifed in config (if any)
+
+ int inherit_ns_fd[LXC_NS_MAX];
+
+ int start_auto;
+ int start_delay;
+ int start_order;
+ struct lxc_list groups;
};
+int run_lxc_hooks(const char *name, char *hook, struct lxc_conf *conf,
+ const char *lxcpath, char *argv[]);
+
+extern int detect_shared_rootfs(void);
+
/*
* Initialize the lxc configuration structure
*/
extern struct lxc_conf *lxc_conf_init(void);
+extern void lxc_conf_free(struct lxc_conf *conf);
+
+extern int pin_rootfs(const char *rootfs);
-extern int lxc_create_network(struct lxc_list *networks);
+extern int lxc_requests_empty_network(struct lxc_handler *handler);
+extern int lxc_create_network(struct lxc_handler *handler);
+extern void lxc_delete_network(struct lxc_handler *handler);
extern int lxc_assign_network(struct lxc_list *networks, pid_t pid);
+extern int lxc_map_ids(struct lxc_list *idmap, pid_t pid);
+extern int lxc_find_gateway_addresses(struct lxc_handler *handler);
extern int lxc_create_tty(const char *name, struct lxc_conf *conf);
extern void lxc_delete_tty(struct lxc_tty_info *tty_info);
+extern int lxc_clear_config_network(struct lxc_conf *c);
+extern int lxc_clear_nic(struct lxc_conf *c, const char *key);
+extern int lxc_clear_config_caps(struct lxc_conf *c);
+extern int lxc_clear_config_keepcaps(struct lxc_conf *c);
+extern int lxc_clear_cgroups(struct lxc_conf *c, const char *key);
+extern int lxc_clear_mount_entries(struct lxc_conf *c);
+extern int lxc_clear_automounts(struct lxc_conf *c);
+extern int lxc_clear_hooks(struct lxc_conf *c, const char *key);
+extern int lxc_clear_idmaps(struct lxc_conf *c);
+extern int lxc_clear_groups(struct lxc_conf *c);
+
/*
* Configure the container from inside
*/
-struct lxc_handler;
-
-extern int lxc_setup(const char *name, struct lxc_conf *lxc_conf);
+struct cgroup_process_info;
+extern int lxc_setup(struct lxc_handler *handler);
-extern int conf_has(const char *name, const char *info);
+extern void lxc_rename_phys_nics_on_shutdown(int netnsfd, struct lxc_conf *conf);
-#define conf_has_fstab(__name) conf_has(__name, "fstab")
-#define conf_has_rootfs(__name) conf_has(__name, "rootfs")
-#define conf_has_pivotdir(__name) conf_has(__name, "pivotdir")
-#define conf_has_utsname(__name) conf_has(__name, "utsname")
-#define conf_has_network(__name) conf_has(__name, "network")
-#define conf_has_console(__name) conf_has(__name, "console")
-#define conf_has_cgroup(__name) conf_has(__name, "cgroup")
-#define conf_has_tty(__name) conf_has(__name, "tty")
-#define conf_has_pts(__name) conf_has(__name, "pts")
+extern int find_unmapped_nsuid(struct lxc_conf *conf, enum idtype idtype);
+extern int mapped_hostid(unsigned id, struct lxc_conf *conf, enum idtype idtype);
+extern int chown_mapped_root(char *path, struct lxc_conf *conf);
+extern int ttys_shift_ids(struct lxc_conf *c);
+extern int userns_exec_1(struct lxc_conf *conf, int (*fn)(void *), void *data);
+extern int parse_mntopts(const char *mntopts, unsigned long *mntflags,
+ char **mntdata);
+extern void tmp_proc_unmount(struct lxc_conf *lxc_conf);
#endif
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