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-rw-r--r--src/libsystemd/sd-bus/bus-container.c8
-rw-r--r--src/machine/machine-dbus.c217
-rw-r--r--src/machine/machine.h4
-rw-r--r--src/machine/machinectl.c75
-rw-r--r--src/machine/machined-dbus.c45
-rw-r--r--src/shared/bus-errors.h1
-rw-r--r--src/shared/logs-show.c4
-rw-r--r--src/shared/util.c103
-rw-r--r--src/shared/util.h4
9 files changed, 384 insertions, 77 deletions
diff --git a/src/libsystemd/sd-bus/bus-container.c b/src/libsystemd/sd-bus/bus-container.c
index 6bd7ad6318..dd4bf1512e 100644
--- a/src/libsystemd/sd-bus/bus-container.c
+++ b/src/libsystemd/sd-bus/bus-container.c
@@ -42,7 +42,7 @@ int bus_container_connect_socket(sd_bus *b) {
if (r < 0)
return r;
- r = namespace_open(leader, &pidnsfd, &mntnsfd, &rootfd);
+ r = namespace_open(leader, &pidnsfd, &mntnsfd, NULL, &rootfd);
if (r < 0)
return r;
@@ -61,7 +61,7 @@ int bus_container_connect_socket(sd_bus *b) {
if (child == 0) {
pid_t grandchild;
- r = namespace_enter(pidnsfd, mntnsfd, rootfd);
+ r = namespace_enter(pidnsfd, mntnsfd, -1, rootfd);
if (r < 0)
_exit(255);
@@ -140,7 +140,7 @@ int bus_container_connect_kernel(sd_bus *b) {
if (r < 0)
return r;
- r = namespace_open(leader, &pidnsfd, &mntnsfd, &rootfd);
+ r = namespace_open(leader, &pidnsfd, &mntnsfd, NULL, &rootfd);
if (r < 0)
return r;
@@ -156,7 +156,7 @@ int bus_container_connect_kernel(sd_bus *b) {
pair[0] = safe_close(pair[0]);
- r = namespace_enter(pidnsfd, mntnsfd, rootfd);
+ r = namespace_enter(pidnsfd, mntnsfd, -1, rootfd);
if (r < 0)
_exit(EXIT_FAILURE);
diff --git a/src/machine/machine-dbus.c b/src/machine/machine-dbus.c
index 83ef82d2e0..c9c3de0d04 100644
--- a/src/machine/machine-dbus.c
+++ b/src/machine/machine-dbus.c
@@ -22,11 +22,15 @@
#include <errno.h>
#include <string.h>
#include <sys/capability.h>
+#include <arpa/inet.h>
+#include "sd-rtnl.h"
#include "bus-util.h"
#include "bus-label.h"
#include "strv.h"
#include "machine.h"
+#include "rtnl-util.h"
+#include "bus-errors.h"
static int property_get_id(
sd_bus *bus,
@@ -79,7 +83,7 @@ static int property_get_state(
static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_class, machine_class, MachineClass);
-static int method_terminate(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
+int bus_machine_method_terminate(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
Machine *m = userdata;
int r;
@@ -94,7 +98,7 @@ static int method_terminate(sd_bus *bus, sd_bus_message *message, void *userdata
return sd_bus_reply_method_return(message, NULL);
}
-static int method_kill(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
+int bus_machine_method_kill(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
Machine *m = userdata;
const char *swho;
int32_t signo;
@@ -127,6 +131,208 @@ static int method_kill(sd_bus *bus, sd_bus_message *message, void *userdata, sd_
return sd_bus_reply_method_return(message, NULL);
}
+int bus_machine_method_get_addresses(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ _cleanup_close_pair_ int pair[2] = { -1, -1 };
+ _cleanup_free_ char *us = NULL, *them = NULL;
+ _cleanup_close_ int netns_fd = -1;
+ Machine *m = userdata;
+ const char *p;
+ siginfo_t si;
+ pid_t child;
+ int r;
+
+ assert(bus);
+ assert(message);
+ assert(m);
+
+ r = readlink_malloc("/proc/self/ns/net", &us);
+ if (r < 0)
+ return sd_bus_error_set_errno(error, r);
+
+ p = procfs_file_alloca(m->leader, "ns/net");
+ r = readlink_malloc(p, &them);
+ if (r < 0)
+ return sd_bus_error_set_errno(error, r);
+
+ if (streq(us, them))
+ return sd_bus_error_setf(error, BUS_ERROR_NO_PRIVATE_NETWORKING, "Machine %s does not use private networking", m->name);
+
+ r = namespace_open(m->leader, NULL, NULL, &netns_fd, NULL);
+ if (r < 0)
+ return sd_bus_error_set_errno(error, r);
+
+ if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, pair) < 0)
+ return sd_bus_error_set_errno(error, -errno);
+
+ child = fork();
+ if (child < 0)
+ return sd_bus_error_set_errno(error, -errno);
+
+ if (child == 0) {
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *resp = NULL;
+ _cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;
+ sd_rtnl_message *addr;
+
+ pair[0] = safe_close(pair[0]);
+
+ r = namespace_enter(-1, -1, netns_fd, -1);
+ if (r < 0)
+ _exit(EXIT_FAILURE);
+
+ r = sd_rtnl_open(&rtnl, 0);
+ if (r < 0)
+ _exit(EXIT_FAILURE);
+
+ r = sd_rtnl_message_new_addr(rtnl, &req, RTM_GETADDR, 0, AF_UNSPEC);
+ if (r < 0)
+ _exit(EXIT_FAILURE);
+
+ r = sd_rtnl_message_request_dump(req, true);
+ if (r < 0)
+ _exit(EXIT_FAILURE);
+
+ r = sd_rtnl_call(rtnl, req, 0, &resp);
+ if (r < 0)
+ _exit(EXIT_FAILURE);
+
+ for (addr = resp; addr; addr = sd_rtnl_message_next(addr)) {
+ uint16_t type;
+ unsigned char family;
+ union {
+ struct in_addr in;
+ struct in6_addr in6;
+ } in_addr;
+ struct iovec iov[2];
+
+ r = sd_rtnl_message_get_type(addr, &type);
+ if (r < 0)
+ _exit(EXIT_FAILURE);
+
+ if (type != RTM_NEWADDR)
+ continue;
+
+ r = sd_rtnl_message_addr_get_family(addr, &family);
+ if (r < 0)
+ _exit(EXIT_FAILURE);
+
+ iov[0] = (struct iovec) { .iov_base = &family, .iov_len = sizeof(family) };
+
+ switch (family) {
+
+ case AF_INET:
+
+ r = sd_rtnl_message_read_in_addr(addr, IFA_LOCAL, &in_addr.in);
+ if (r < 0)
+ _exit(EXIT_FAILURE);
+
+ if (in_addr.in.s_addr == htobe32(INADDR_LOOPBACK))
+ continue;
+
+ iov[1] = (struct iovec) { .iov_base = &in_addr.in, .iov_len = sizeof(in_addr.in) };
+ break;
+
+ case AF_INET6:
+
+ r = sd_rtnl_message_read_in6_addr(addr, IFA_ADDRESS, &in_addr.in6);
+ if (r < 0)
+ _exit(EXIT_FAILURE);
+
+ if (IN6_IS_ADDR_LOOPBACK(&in_addr.in6))
+ continue;
+
+ iov[1] = (struct iovec) { .iov_base = &in_addr.in6, .iov_len = sizeof(in_addr.in6) };
+ break;
+
+ default:
+ continue;
+ }
+
+ r = writev(pair[1], iov, 2);
+ if (r < 0)
+ _exit(EXIT_FAILURE);
+ }
+
+ _exit(EXIT_SUCCESS);
+ }
+
+ pair[1] = safe_close(pair[1]);
+
+ r = sd_bus_message_new_method_return(message, &reply);
+ if (r < 0)
+ return sd_bus_error_set_errno(error, r);
+
+ r = sd_bus_message_open_container(reply, 'a', "(yay)");
+ if (r < 0)
+ return sd_bus_error_set_errno(error, r);
+
+ for (;;) {
+ unsigned char family;
+ ssize_t n;
+ union {
+ struct in_addr in;
+ struct in6_addr in6;
+ } in_addr;
+ struct iovec iov[2];
+ struct msghdr mh = {
+ .msg_iov = iov,
+ .msg_iovlen = 2,
+ };
+
+ iov[0] = (struct iovec) { .iov_base = &family, .iov_len = sizeof(family) };
+ iov[1] = (struct iovec) { .iov_base = &in_addr, .iov_len = sizeof(in_addr) };
+
+ n = recvmsg(pair[0], &mh, 0);
+ if (n < 0)
+ return sd_bus_error_set_errno(error, -errno);
+ if ((size_t) n < sizeof(family))
+ break;
+
+ r = sd_bus_message_open_container(reply, 'r', "yay");
+ if (r < 0)
+ return sd_bus_error_set_errno(error, r);
+
+ r = sd_bus_message_append(reply, "y", family);
+ if (r < 0)
+ return sd_bus_error_set_errno(error, r);
+
+ switch (family) {
+
+ case AF_INET:
+ if (n != sizeof(struct in_addr) + sizeof(family))
+ return sd_bus_error_set_errno(error, EIO);
+
+ r = sd_bus_message_append_array(reply, 'y', &in_addr.in, sizeof(in_addr.in));
+ break;
+
+ case AF_INET6:
+ if (n != sizeof(struct in6_addr) + sizeof(family))
+ return sd_bus_error_set_errno(error, EIO);
+
+ r = sd_bus_message_append_array(reply, 'y', &in_addr.in6, sizeof(in_addr.in6));
+ break;
+ }
+ if (r < 0)
+ return sd_bus_error_set_errno(error, r);
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return sd_bus_error_set_errno(error, r);
+ }
+
+ r = wait_for_terminate(child, &si);
+ if (r < 0)
+ return sd_bus_error_set_errno(error, r);
+ if (si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS)
+ return sd_bus_error_set_errno(error, EIO);
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return sd_bus_error_set_errno(error, r);
+
+ return sd_bus_send(bus, reply, NULL);
+}
+
const sd_bus_vtable machine_vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_PROPERTY("Name", "s", NULL, offsetof(Machine, name), SD_BUS_VTABLE_PROPERTY_CONST),
@@ -139,9 +345,10 @@ const sd_bus_vtable machine_vtable[] = {
SD_BUS_PROPERTY("Class", "s", property_get_class, offsetof(Machine, class), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("RootDirectory", "s", NULL, offsetof(Machine, root_directory), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("State", "s", property_get_state, 0, 0),
- SD_BUS_METHOD("Terminate", NULL, NULL, method_terminate, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)),
- SD_BUS_METHOD("Kill", "si", NULL, method_kill, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)),
- SD_BUS_VTABLE_END
+ SD_BUS_METHOD("Terminate", NULL, NULL, bus_machine_method_terminate, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)),
+ SD_BUS_METHOD("Kill", "si", NULL, bus_machine_method_kill, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)),
+ SD_BUS_METHOD("GetAddresses", NULL, "a(yay)", bus_machine_method_get_addresses, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_VTABLE_END
};
int machine_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) {
diff --git a/src/machine/machine.h b/src/machine/machine.h
index f4aefc550f..a894a463a9 100644
--- a/src/machine/machine.h
+++ b/src/machine/machine.h
@@ -96,6 +96,10 @@ char *machine_bus_path(Machine *s);
int machine_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error);
int machine_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error);
+int bus_machine_method_terminate(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error);
+int bus_machine_method_kill(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error);
+int bus_machine_method_get_addresses(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error);
+
int machine_send_signal(Machine *m, bool new_machine);
int machine_send_create_reply(Machine *m, sd_bus_error *error);
diff --git a/src/machine/machinectl.c b/src/machine/machinectl.c
index 6337aa274f..c2bf7e5197 100644
--- a/src/machine/machinectl.c
+++ b/src/machine/machinectl.c
@@ -27,6 +27,8 @@
#include <pwd.h>
#include <locale.h>
#include <fcntl.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
#include "sd-bus.h"
#include "log.h"
@@ -165,6 +167,63 @@ static int show_unit_cgroup(sd_bus *bus, const char *unit, pid_t leader) {
return 0;
}
+static int print_addresses(sd_bus *bus, const char *name, const char *prefix, const char *prefix2) {
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ int r;
+
+ assert(bus);
+ assert(name);
+ assert(prefix);
+ assert(prefix2);
+
+ r = sd_bus_call_method(bus,
+ "org.freedesktop.machine1",
+ "/org/freedesktop/machine1",
+ "org.freedesktop.machine1.Manager",
+ "GetMachineAddresses",
+ NULL,
+ &reply,
+ "s", name);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_enter_container(reply, 'a', "(yay)");
+ if (r < 0)
+ return bus_log_parse_error(r);
+
+ while ((r = sd_bus_message_enter_container(reply, 'r', "yay")) > 0) {
+ unsigned char family;
+ const void *a;
+ size_t sz;
+ char buffer[MAX(INET6_ADDRSTRLEN, INET_ADDRSTRLEN)];
+
+ r = sd_bus_message_read(reply, "y", &family);
+ if (r < 0)
+ return bus_log_parse_error(r);
+
+ r = sd_bus_message_read_array(reply, 'y', &a, &sz);
+ if (r < 0)
+ return bus_log_parse_error(r);
+
+ printf("%s%s\n", prefix, inet_ntop(family, a, buffer, sizeof(buffer)));
+
+ r = sd_bus_message_exit_container(reply);
+ if (r < 0)
+ return bus_log_parse_error(r);
+
+ if (prefix != prefix2)
+ prefix = prefix2;
+ }
+ if (r < 0)
+ return bus_log_parse_error(r);
+
+ r = sd_bus_message_exit_container(reply);
+ if (r < 0)
+ return bus_log_parse_error(r);
+
+ return 0;
+}
+
typedef struct MachineStatusInfo {
char *name;
sd_id128_t id;
@@ -221,6 +280,10 @@ static void print_machine_status_info(sd_bus *bus, MachineStatusInfo *i) {
if (i->root_directory)
printf("\t Root: %s\n", i->root_directory);
+ print_addresses(bus, i->name,
+ "\t Address: ",
+ "\t ");
+
if (i->unit) {
printf("\t Unit: %s\n", i->unit);
show_unit_cgroup(bus, i->unit, i->leader);
@@ -427,7 +490,7 @@ static int openpt_in_namespace(pid_t pid, int flags) {
pid_t child;
siginfo_t si;
- r = namespace_open(pid, &pidnsfd, &mntnsfd, &rootfd);
+ r = namespace_open(pid, &pidnsfd, &mntnsfd, NULL, &rootfd);
if (r < 0)
return r;
@@ -441,7 +504,7 @@ static int openpt_in_namespace(pid_t pid, int flags) {
if (child == 0) {
pair[0] = safe_close(pair[0]);
- r = namespace_enter(pidnsfd, mntnsfd, rootfd);
+ r = namespace_enter(pidnsfd, mntnsfd, -1, rootfd);
if (r < 0)
_exit(EXIT_FAILURE);
@@ -466,10 +529,10 @@ static int openpt_in_namespace(pid_t pid, int flags) {
pair[1] = safe_close(pair[1]);
r = wait_for_terminate(child, &si);
- if (r < 0 || si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS) {
-
- return r < 0 ? r : -EIO;
- }
+ if (r < 0)
+ return r;
+ if (si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS)
+ return -EIO;
if (recvmsg(pair[0], &mh, MSG_NOSIGNAL|MSG_CMSG_CLOEXEC) < 0)
return -errno;
diff --git a/src/machine/machined-dbus.c b/src/machine/machined-dbus.c
index a32d7f5d75..0078a277d9 100644
--- a/src/machine/machined-dbus.c
+++ b/src/machine/machined-dbus.c
@@ -27,7 +27,6 @@
#include "sd-id128.h"
#include "sd-messages.h"
-
#include "strv.h"
#include "mkdir.h"
#include "path-util.h"
@@ -343,50 +342,49 @@ static int method_terminate_machine(sd_bus *bus, sd_bus_message *message, void *
if (!machine)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
- r = machine_stop(machine);
- if (r < 0)
- return sd_bus_error_set_errno(error, r);
-
- return sd_bus_reply_method_return(message, NULL);
+ return bus_machine_method_terminate(bus, message, machine, error);
}
static int method_kill_machine(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
Machine *machine;
const char *name;
- const char *swho;
- int32_t signo;
- KillWho who;
int r;
assert(bus);
assert(message);
assert(m);
- r = sd_bus_message_read(message, "ssi", &name, &swho, &signo);
+ r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return sd_bus_error_set_errno(error, r);
- if (isempty(swho))
- who = KILL_ALL;
- else {
- who = kill_who_from_string(swho);
- if (who < 0)
- return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid kill parameter '%s'", swho);
- }
-
- if (signo <= 0 || signo >= _NSIG)
- return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo);
-
machine = hashmap_get(m->machines, name);
if (!machine)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
- r = machine_kill(machine, who, signo);
+ return bus_machine_method_kill(bus, message, machine, error);
+}
+
+static int method_get_machine_addresses(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ Manager *m = userdata;
+ Machine *machine;
+ const char *name;
+ int r;
+
+ assert(bus);
+ assert(message);
+ assert(m);
+
+ r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return sd_bus_error_set_errno(error, r);
- return sd_bus_reply_method_return(message, NULL);
+ machine = hashmap_get(m->machines, name);
+ if (!machine)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
+
+ return bus_machine_method_get_addresses(bus, message, machine, error);
}
const sd_bus_vtable manager_vtable[] = {
@@ -398,6 +396,7 @@ const sd_bus_vtable manager_vtable[] = {
SD_BUS_METHOD("RegisterMachine", "sayssus", "o", method_register_machine, 0),
SD_BUS_METHOD("KillMachine", "ssi", NULL, method_kill_machine, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)),
SD_BUS_METHOD("TerminateMachine", "s", NULL, method_terminate_machine, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)),
+ SD_BUS_METHOD("GetMachineAddresses", "s", "a(yay)", method_get_machine_addresses, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_SIGNAL("MachineNew", "so", 0),
SD_BUS_SIGNAL("MachineRemoved", "so", 0),
SD_BUS_VTABLE_END
diff --git a/src/shared/bus-errors.h b/src/shared/bus-errors.h
index 5637935915..45e129387f 100644
--- a/src/shared/bus-errors.h
+++ b/src/shared/bus-errors.h
@@ -42,6 +42,7 @@
#define BUS_ERROR_NO_SUCH_MACHINE "org.freedesktop.machine1.NoSuchMachine"
#define BUS_ERROR_NO_MACHINE_FOR_PID "org.freedesktop.machine1.NoMachineForPID"
#define BUS_ERROR_MACHINE_EXISTS "org.freedesktop.machine1.MachineExists"
+#define BUS_ERROR_NO_PRIVATE_NETWORKING "org.freedesktop.machine1.NoPrivateNetworking"
#define BUS_ERROR_NO_SUCH_SESSION "org.freedesktop.login1.NoSuchSession"
#define BUS_ERROR_NO_SESSION_FOR_PID "org.freedesktop.login1.NoSessionForPID"
diff --git a/src/shared/logs-show.c b/src/shared/logs-show.c
index 72c9ad2eba..c3578ac918 100644
--- a/src/shared/logs-show.c
+++ b/src/shared/logs-show.c
@@ -1158,7 +1158,7 @@ static int get_boot_id_for_machine(const char *machine, sd_id128_t *boot_id) {
if (r < 0)
return r;
- r = namespace_open(pid, &pidnsfd, &mntnsfd, &rootfd);
+ r = namespace_open(pid, &pidnsfd, &mntnsfd, NULL, &rootfd);
if (r < 0)
return r;
@@ -1174,7 +1174,7 @@ static int get_boot_id_for_machine(const char *machine, sd_id128_t *boot_id) {
pair[0] = safe_close(pair[0]);
- r = namespace_enter(pidnsfd, mntnsfd, rootfd);
+ r = namespace_enter(pidnsfd, mntnsfd, -1, rootfd);
if (r < 0)
_exit(EXIT_FAILURE);
diff --git a/src/shared/util.c b/src/shared/util.c
index 020c1da7a9..0cc51e0962 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -6091,60 +6091,93 @@ int container_get_leader(const char *machine, pid_t *pid) {
return 0;
}
-int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *root_fd) {
- _cleanup_close_ int pidnsfd = -1, mntnsfd = -1;
- const char *pidns, *mntns, *root;
+int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *netns_fd, int *root_fd) {
+ _cleanup_close_ int pidnsfd = -1, mntnsfd = -1, netnsfd = -1;
int rfd;
assert(pid >= 0);
- assert(pidns_fd);
- assert(mntns_fd);
- assert(root_fd);
- mntns = procfs_file_alloca(pid, "ns/mnt");
- mntnsfd = open(mntns, O_RDONLY|O_NOCTTY|O_CLOEXEC);
- if (mntnsfd < 0)
- return -errno;
+ if (mntns_fd) {
+ const char *mntns;
- pidns = procfs_file_alloca(pid, "ns/pid");
- pidnsfd = open(pidns, O_RDONLY|O_NOCTTY|O_CLOEXEC);
- if (pidnsfd < 0)
- return -errno;
+ mntns = procfs_file_alloca(pid, "ns/mnt");
+ mntnsfd = open(mntns, O_RDONLY|O_NOCTTY|O_CLOEXEC);
+ if (mntnsfd < 0)
+ return -errno;
+ }
- root = procfs_file_alloca(pid, "root");
- rfd = open(root, O_RDONLY|O_NOCTTY|O_CLOEXEC|O_DIRECTORY);
- if (rfd < 0)
- return -errno;
+ if (pidns_fd) {
+ const char *pidns;
+
+ pidns = procfs_file_alloca(pid, "ns/pid");
+ pidnsfd = open(pidns, O_RDONLY|O_NOCTTY|O_CLOEXEC);
+ if (pidnsfd < 0)
+ return -errno;
+ }
+
+ if (netns_fd) {
+ const char *netns;
+
+ netns = procfs_file_alloca(pid, "ns/net");
+ netnsfd = open(netns, O_RDONLY|O_NOCTTY|O_CLOEXEC);
+ if (netnsfd < 0)
+ return -errno;
+ }
+
+ if (root_fd) {
+ const char *root;
+
+ root = procfs_file_alloca(pid, "root");
+ rfd = open(root, O_RDONLY|O_NOCTTY|O_CLOEXEC|O_DIRECTORY);
+ if (rfd < 0)
+ return -errno;
+ }
+
+ if (pidns_fd)
+ *pidns_fd = pidnsfd;
- *pidns_fd = pidnsfd;
- *mntns_fd = mntnsfd;
- *root_fd = rfd;
- pidnsfd = -1;
- mntnsfd = -1;
+ if (mntns_fd)
+ *mntns_fd = mntnsfd;
+
+ if (netns_fd)
+ *netns_fd = netnsfd;
+
+ if (root_fd)
+ *root_fd = rfd;
+
+ pidnsfd = mntnsfd = netnsfd = -1;
return 0;
}
-int namespace_enter(int pidns_fd, int mntns_fd, int root_fd) {
- assert(pidns_fd >= 0);
- assert(mntns_fd >= 0);
- assert(root_fd >= 0);
+int namespace_enter(int pidns_fd, int mntns_fd, int netns_fd, int root_fd) {
- if (setns(pidns_fd, CLONE_NEWPID) < 0)
- return -errno;
+ if (pidns_fd >= 0)
+ if (setns(pidns_fd, CLONE_NEWPID) < 0)
+ return -errno;
- if (setns(mntns_fd, CLONE_NEWNS) < 0)
- return -errno;
+ if (mntns_fd >= 0)
+ if (setns(mntns_fd, CLONE_NEWNS) < 0)
+ return -errno;
- if (fchdir(root_fd) < 0)
- return -errno;
+ if (netns_fd >= 0)
+ if (setns(netns_fd, CLONE_NEWNET) < 0)
+ return -errno;
- if (chroot(".") < 0)
- return -errno;
+ if (root_fd >= 0) {
+ if (fchdir(root_fd) < 0)
+ return -errno;
+
+ if (chroot(".") < 0)
+ return -errno;
+ }
if (setresgid(0, 0, 0) < 0)
return -errno;
+ if (setgroups(0, NULL) < 0)
+ return -errno;
+
if (setresuid(0, 0, 0) < 0)
return -errno;
diff --git a/src/shared/util.h b/src/shared/util.h
index f2ce4f0d6e..7a7d15c82c 100644
--- a/src/shared/util.h
+++ b/src/shared/util.h
@@ -910,8 +910,8 @@ int parse_proc_cmdline(int (*parse_word)(const char *key, const char *value));
int container_get_leader(const char *machine, pid_t *pid);
-int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *root_fd);
-int namespace_enter(int pidns_fd, int mntns_fd, int root_fd);
+int namespace_open(pid_t pid, int *pidns_fd, int *mntns_fd, int *netns_fd, int *root_fd);
+int namespace_enter(int pidns_fd, int mntns_fd, int netns_fd, int root_fd);
bool pid_is_alive(pid_t pid);
bool pid_is_unwaited(pid_t pid);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-03 14:13:56 +0000