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11 Commits

Author SHA1 Message Date
Yu Watanabe 9e9133dd7a
Merge 99bd85d19b into bbec1c87d3 2024-11-26 22:06:43 +01:00
gerblesh bbec1c87d3 sysext: set SELinux context for hierarchies and workdir 2024-11-26 17:47:32 +00:00
Yu Watanabe f29a07f3fc man: several more assorted fixes
Continuation of 4ebbb5bfe8.
Closes #35307.
2024-11-26 17:28:14 +01:00
Luca Boccassi 0566bd9643
machine: increase timeouts in attempt to fix #35115 (#35117)
An attempt to fix https://github.com/systemd/systemd/issues/35115
2024-11-26 16:12:56 +00:00
Lennart Poettering 7b4b3a8f7b sd-varlink: fix bug when enqueuing messages with fds asynchronously
When determining the poll events to wait for we need to take the queue
of pending messages that carry fds into account. Otherwise we might end
up not waking up if such an fd-carrying message is enqueued
asynchronously (i.e. not from a dispatch callback).
2024-11-26 16:06:53 +00:00
Winterhuman 5bed97dd57
man/systemd-system.conf: Correct "struct" to "strict" (#35364) 2024-11-26 22:41:49 +09:00
Yu Watanabe 99bd85d19b namespace-util: introduce pidref_namespace_open_by_type() helper function
Then, let's make pidref_namespace_open() handle ENOENT correctly
when procfs is not mounted.
2024-11-26 02:16:28 +09:00
Yu Watanabe 3a48995730 namespace-util: introduce pid_namespace_stat() helper function
It correctly handles ENOENT correctly when procfs is not mounted.
2024-11-26 02:16:24 +09:00
Yu Watanabe 2eb6427ab2 namespace-util: refuse remote pidref in pidref_namespace_open() 2024-11-26 02:10:17 +09:00
Ivan Kruglov 3aa3f130c1 machine: add debug for systemd-nspawn@.service 2024-11-19 19:12:32 +01:00
Ivan Kruglov df18408ac6 machine: increase timeouts in attempt to fix #35115 2024-11-19 18:04:27 +01:00
13 changed files with 171 additions and 91 deletions

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@ -128,7 +128,8 @@
<para>If <option>-keep-download=yes</option> is specified the image will be downloaded and stored in <para>If <option>-keep-download=yes</option> is specified the image will be downloaded and stored in
a read-only subvolume/directory in the image directory that is named after the specified URL and its a read-only subvolume/directory in the image directory that is named after the specified URL and its
HTTP etag. A writable snapshot is then taken from this subvolume, and named after the specified local HTTP etag (see <ulink url="https://en.wikipedia.org/wiki/HTTP_ETag">HTTP ETag</ulink> for more
information). A writable snapshot is then taken from this subvolume, and named after the specified local
name. This behavior ensures that creating multiple instances of the same URL is efficient, as name. This behavior ensures that creating multiple instances of the same URL is efficient, as
multiple downloads are not necessary. In order to create only the read-only image, and avoid creating multiple downloads are not necessary. In order to create only the read-only image, and avoid creating
its writable snapshot, specify <literal>-</literal> as local name.</para> its writable snapshot, specify <literal>-</literal> as local name.</para>

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@ -28,7 +28,9 @@
<title>Description</title> <title>Description</title>
<para><command>pam_systemd_loadkey</command> reads a NUL-separated password list from the kernel keyring, <para><command>pam_systemd_loadkey</command> reads a NUL-separated password list from the kernel keyring,
and sets the last password in the list as the PAM authtok.</para> and sets the last password in the list as the PAM authtok, which can be used by e.g.
<citerefentry project='man-pages'><refentrytitle>pam_get_authtok</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
</para>
<para>The password list is supposed to be stored in the "user" keyring of the root user, <para>The password list is supposed to be stored in the "user" keyring of the root user,
by an earlier call to by an earlier call to

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@ -61,7 +61,10 @@
<literal>systemd-run0</literal> PAM stack.</para> <literal>systemd-run0</literal> PAM stack.</para>
<para>Note that <command>run0</command> is implemented as an alternative multi-call invocation of <para>Note that <command>run0</command> is implemented as an alternative multi-call invocation of
<citerefentry><refentrytitle>systemd-run</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para> <citerefentry><refentrytitle>systemd-run</refentrytitle><manvolnum>1</manvolnum></citerefentry>. That is,
<command>run0</command> is a symbolic link to <command>systemd-run</command> executable file, and it
behaves as <command>run0</command> if it is invoked through the symbolic link, otherwise behaves as
<command>systemd-run</command>.</para>
</refsect1> </refsect1>
<refsect1> <refsect1>

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@ -41,8 +41,10 @@
<refsect1> <refsect1>
<title>Kernel Command Line</title> <title>Kernel Command Line</title>
<para><filename>systemd-rfkill</filename> understands the <para>
following kernel command line parameter:</para> <command>systemd-rfkill</command> understands the following kernel command line parameter. See also
<citerefentry><refentrytitle>kernel-command-line</refentrytitle><manvolnum>7</manvolnum></citerefentry>.
</para>
<variablelist class='kernel-commandline-options'> <variablelist class='kernel-commandline-options'>
<varlistentry> <varlistentry>

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@ -302,7 +302,7 @@
and running in an initrd equivalent to true, otherwise false. This implements a restricted subset of and running in an initrd equivalent to true, otherwise false. This implements a restricted subset of
the per-unit setting of the same name, see the per-unit setting of the same name, see
<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry> for <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry> for
details: currently, the <literal>full</literal> or <literal>struct</literal> values are not details: currently, the <literal>full</literal> or <literal>strict</literal> values are not
supported.</para> supported.</para>
<xi:include href="version-info.xml" xpointer="v256"/></listitem> <xi:include href="version-info.xml" xpointer="v256"/></listitem>

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@ -394,9 +394,9 @@
<listitem><para>SBAT metadata associated with the UKI or addon. SBAT policies are useful to revoke <listitem><para>SBAT metadata associated with the UKI or addon. SBAT policies are useful to revoke
whole groups of UKIs or addons with a single, static policy update that does not take space in whole groups of UKIs or addons with a single, static policy update that does not take space in
DBX/MOKX. If not specified manually, a default metadata entry consisting of DBX/MOKX. If not specified manually, a default metadata entry consisting of
<literal>uki,1,UKI,uki,1,https://uapi-group.org/specifications/specs/unified_kernel_image/</literal> <programlisting>uki,1,UKI,uki,1,https://uapi-group.org/specifications/specs/unified_kernel_image/</programlisting>
for UKIs and for UKIs and
<literal>uki-addon,1,UKI Addon,addon,1,https://www.freedesktop.org/software/systemd/man/latest/systemd-stub.html</literal> <programlisting>uki-addon,1,UKI Addon,addon,1,https://www.freedesktop.org/software/systemd/man/latest/systemd-stub.html</programlisting>
for addons will be used, to ensure it is always possible to revoke them. For more information on for addons will be used, to ensure it is always possible to revoke them. For more information on
SBAT see <ulink url="https://github.com/rhboot/shim/blob/main/SBAT.md">Shim documentation</ulink>. SBAT see <ulink url="https://github.com/rhboot/shim/blob/main/SBAT.md">Shim documentation</ulink>.
</para> </para>

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@ -289,7 +289,8 @@ int write_string_file_full(
const char *fn, const char *fn,
const char *line, const char *line,
WriteStringFileFlags flags, WriteStringFileFlags flags,
const struct timespec *ts) { const struct timespec *ts,
const char *label_fn) {
bool call_label_ops_post = false, made_file = false; bool call_label_ops_post = false, made_file = false;
_cleanup_fclose_ FILE *f = NULL; _cleanup_fclose_ FILE *f = NULL;
@ -321,7 +322,8 @@ int write_string_file_full(
mode_t mode = write_string_file_flags_to_mode(flags); mode_t mode = write_string_file_flags_to_mode(flags);
if (FLAGS_SET(flags, WRITE_STRING_FILE_LABEL|WRITE_STRING_FILE_CREATE)) { if (FLAGS_SET(flags, WRITE_STRING_FILE_LABEL|WRITE_STRING_FILE_CREATE)) {
r = label_ops_pre(dir_fd, fn, mode); const char *lookup = label_fn ? label_fn : fn;
r = label_ops_pre(dir_fd, lookup, mode);
if (r < 0) if (r < 0)
goto fail; goto fail;

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@ -51,12 +51,13 @@ int write_string_stream_full(FILE *f, const char *line, WriteStringFileFlags fla
static inline int write_string_stream(FILE *f, const char *line, WriteStringFileFlags flags) { static inline int write_string_stream(FILE *f, const char *line, WriteStringFileFlags flags) {
return write_string_stream_full(f, line, flags, /* ts= */ NULL); return write_string_stream_full(f, line, flags, /* ts= */ NULL);
} }
int write_string_file_full(int dir_fd, const char *fn, const char *line, WriteStringFileFlags flags, const struct timespec *ts);
int write_string_file_full(int dir_fd, const char *fn, const char *line, WriteStringFileFlags flags, const struct timespec *ts, const char *label_fn);
static inline int write_string_file(const char *fn, const char *line, WriteStringFileFlags flags) { static inline int write_string_file(const char *fn, const char *line, WriteStringFileFlags flags) {
return write_string_file_full(AT_FDCWD, fn, line, flags, /* ts= */ NULL); return write_string_file_full(AT_FDCWD, fn, line, flags, /* ts= */ NULL, /*label_fn=*/ NULL);
} }
static inline int write_string_file_at(int dir_fd, const char *fn, const char *line, WriteStringFileFlags flags) { static inline int write_string_file_at(int dir_fd, const char *fn, const char *line, WriteStringFileFlags flags) {
return write_string_file_full(dir_fd, fn, line, flags, /* ts= */ NULL); return write_string_file_full(dir_fd, fn, line, flags, /* ts= */ NULL, /*label_fn=*/ NULL);
} }
int write_string_filef(const char *fn, WriteStringFileFlags flags, const char *format, ...) _printf_(3, 4); int write_string_filef(const char *fn, WriteStringFileFlags flags, const char *format, ...) _printf_(3, 4);

View File

@ -48,6 +48,28 @@ static NamespaceType clone_flag_to_namespace_type(unsigned long clone_flag) {
return _NAMESPACE_TYPE_INVALID; return _NAMESPACE_TYPE_INVALID;
} }
static int pidref_namespace_open_by_type(const PidRef *pidref, NamespaceType type) {
assert(type >= 0);
assert(type < _NAMESPACE_TYPE_MAX);
/* Here, pidref can be NULL or unset, but cannot be remote. */
if (pidref_is_remote(pidref))
return -EREMOTE;
const char *p = pid_namespace_path(pidref ? pidref->pid : 0, type);
int fd = RET_NERRNO(open(p, O_RDONLY|O_NOCTTY|O_CLOEXEC));
if (fd == -ENOENT && proc_mounted() == 0)
return -ENOSYS;
/* Here, we do not call pidref_verify(). The caller should call it on success. */
return fd;
}
int namespace_open_by_type(NamespaceType type) {
return pidref_namespace_open_by_type(NULL, type);
}
int pidref_namespace_open( int pidref_namespace_open(
const PidRef *pidref, const PidRef *pidref,
int *ret_pidns_fd, int *ret_pidns_fd,
@ -60,51 +82,47 @@ int pidref_namespace_open(
userns_fd = -EBADF, root_fd = -EBADF; userns_fd = -EBADF, root_fd = -EBADF;
int r; int r;
assert(pidref_is_set(pidref)); assert(pidref);
if (!pidref_is_set(pidref))
return -ESRCH;
if (pidref_is_remote(pidref))
return -EREMOTE;
if (ret_pidns_fd) { if (ret_pidns_fd) {
const char *pidns; pidns_fd = pidref_namespace_open_by_type(pidref, NAMESPACE_PID);
pidns = pid_namespace_path(pidref->pid, NAMESPACE_PID);
pidns_fd = open(pidns, O_RDONLY|O_NOCTTY|O_CLOEXEC);
if (pidns_fd < 0) if (pidns_fd < 0)
return -errno; return pidns_fd;
} }
if (ret_mntns_fd) { if (ret_mntns_fd) {
const char *mntns; mntns_fd = pidref_namespace_open_by_type(pidref, NAMESPACE_MOUNT);
mntns = pid_namespace_path(pidref->pid, NAMESPACE_MOUNT);
mntns_fd = open(mntns, O_RDONLY|O_NOCTTY|O_CLOEXEC);
if (mntns_fd < 0) if (mntns_fd < 0)
return -errno; return mntns_fd;
} }
if (ret_netns_fd) { if (ret_netns_fd) {
const char *netns; netns_fd = pidref_namespace_open_by_type(pidref, NAMESPACE_NET);
netns = pid_namespace_path(pidref->pid, NAMESPACE_NET);
netns_fd = open(netns, O_RDONLY|O_NOCTTY|O_CLOEXEC);
if (netns_fd < 0) if (netns_fd < 0)
return -errno; return netns_fd;
} }
if (ret_userns_fd) { if (ret_userns_fd) {
const char *userns; userns_fd = pidref_namespace_open_by_type(pidref, NAMESPACE_USER);
if (userns_fd < 0 && userns_fd != -ENOENT)
userns = pid_namespace_path(pidref->pid, NAMESPACE_USER); return userns_fd;
userns_fd = open(userns, O_RDONLY|O_NOCTTY|O_CLOEXEC);
if (userns_fd < 0 && errno != ENOENT)
return -errno;
} }
if (ret_root_fd) { if (ret_root_fd) {
const char *root; const char *root;
root = procfs_file_alloca(pidref->pid, "root"); root = procfs_file_alloca(pidref->pid, "root");
root_fd = open(root, O_RDONLY|O_NOCTTY|O_CLOEXEC|O_DIRECTORY); root_fd = RET_NERRNO(open(root, O_RDONLY|O_NOCTTY|O_CLOEXEC|O_DIRECTORY));
if (root_fd == -ENOENT)
return proc_mounted() > 0 ? -ENOENT : -ENOSYS;
if (root_fd < 0) if (root_fd < 0)
return -errno; return root_fd;
} }
r = pidref_verify(pidref); r = pidref_verify(pidref);
@ -402,9 +420,25 @@ int netns_acquire(void) {
return TAKE_FD(netns_fd); return TAKE_FD(netns_fd);
} }
static int pid_namespace_stat(pid_t pid, NamespaceType type, struct stat *ret) {
assert(type >= 0);
assert(type < _NAMESPACE_TYPE_MAX);
assert(ret);
const char *p = pid_namespace_path(pid, type);
if (stat(p, ret) < 0) {
if (errno == ENOENT)
return proc_mounted() == 0 ? -ENOSYS : -ENOENT;
return -errno;
}
return 0;
}
int in_same_namespace(pid_t pid1, pid_t pid2, NamespaceType type) { int in_same_namespace(pid_t pid1, pid_t pid2, NamespaceType type) {
const char *ns_path;
struct stat ns_st1, ns_st2; struct stat ns_st1, ns_st2;
int r;
if (pid1 == 0) if (pid1 == 0)
pid1 = getpid_cached(); pid1 = getpid_cached();
@ -415,13 +449,13 @@ int in_same_namespace(pid_t pid1, pid_t pid2, NamespaceType type) {
if (pid1 == pid2) if (pid1 == pid2)
return 1; return 1;
ns_path = pid_namespace_path(pid1, type); r = pid_namespace_stat(pid1, type, &ns_st1);
if (stat(ns_path, &ns_st1) < 0) if (r < 0)
return -errno; return r;
ns_path = pid_namespace_path(pid2, type); r = pid_namespace_stat(pid2, type, &ns_st2);
if (stat(ns_path, &ns_st2) < 0) if (r < 0)
return -errno; return r;
return stat_inode_same(&ns_st1, &ns_st2); return stat_inode_same(&ns_st1, &ns_st2);
} }
@ -464,22 +498,6 @@ int parse_userns_uid_range(const char *s, uid_t *ret_uid_shift, uid_t *ret_uid_r
return 0; return 0;
} }
int namespace_open_by_type(NamespaceType type) {
const char *p;
int fd;
assert(type >= 0);
assert(type < _NAMESPACE_TYPE_MAX);
p = pid_namespace_path(0, type);
fd = RET_NERRNO(open(p, O_RDONLY|O_NOCTTY|O_CLOEXEC));
if (fd == -ENOENT && proc_mounted() == 0)
return -ENOSYS;
return fd;
}
int namespace_is_init(NamespaceType type) { int namespace_is_init(NamespaceType type) {
int r; int r;
@ -489,13 +507,8 @@ int namespace_is_init(NamespaceType type) {
if (namespace_info[type].root_inode == 0) if (namespace_info[type].root_inode == 0)
return -EBADR; /* Cannot answer this question */ return -EBADR; /* Cannot answer this question */
const char *p = pid_namespace_path(0, type);
struct stat st; struct stat st;
r = RET_NERRNO(stat(p, &st)); r = pid_namespace_stat(0, type, &st);
if (r == -ENOENT)
/* If the /proc/ns/<type> API is not around in /proc/ then ns is off in the kernel and we are in the init ns */
return proc_mounted() == 0 ? -ENOSYS : true;
if (r < 0) if (r < 0)
return r; return r;
@ -503,7 +516,7 @@ int namespace_is_init(NamespaceType type) {
} }
int is_our_namespace(int fd, NamespaceType request_type) { int is_our_namespace(int fd, NamespaceType request_type) {
int clone_flag; int r, clone_flag;
assert(fd >= 0); assert(fd >= 0);
@ -522,13 +535,9 @@ int is_our_namespace(int fd, NamespaceType request_type) {
if (fstat(fd, &st_fd) < 0) if (fstat(fd, &st_fd) < 0)
return -errno; return -errno;
const char *p = pid_namespace_path(0, found_type); r = pid_namespace_stat(0, found_type, &st_ours);
if (stat(p, &st_ours) < 0) { if (r < 0)
if (errno == ENOENT) return r;
return proc_mounted() == 0 ? -ENOSYS : -ENOENT;
return -errno;
}
return stat_inode_same(&st_ours, &st_fd); return stat_inode_same(&st_ours, &st_fd);
} }

View File

@ -1698,7 +1698,8 @@ _public_ int sd_varlink_get_events(sd_varlink *v) {
ret |= EPOLLIN; ret |= EPOLLIN;
if (!v->write_disconnected && if (!v->write_disconnected &&
v->output_buffer_size > 0) (v->output_queue ||
v->output_buffer_size > 0))
ret |= EPOLLOUT; ret |= EPOLLOUT;
return ret; return ret;

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@ -1,5 +1,6 @@
/* SPDX-License-Identifier: LGPL-2.1-or-later */ /* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <errno.h>
#include <fcntl.h> #include <fcntl.h>
#include <getopt.h> #include <getopt.h>
#include <linux/loop.h> #include <linux/loop.h>
@ -45,6 +46,7 @@
#include "process-util.h" #include "process-util.h"
#include "rm-rf.h" #include "rm-rf.h"
#include "sort-util.h" #include "sort-util.h"
#include "selinux-util.h"
#include "string-table.h" #include "string-table.h"
#include "string-util.h" #include "string-util.h"
#include "terminal-util.h" #include "terminal-util.h"
@ -899,6 +901,7 @@ static int resolve_mutable_directory(
_cleanup_free_ char *path = NULL, *resolved_path = NULL, *dir_name = NULL; _cleanup_free_ char *path = NULL, *resolved_path = NULL, *dir_name = NULL;
const char *root = arg_root, *base = MUTABLE_EXTENSIONS_BASE_DIR; const char *root = arg_root, *base = MUTABLE_EXTENSIONS_BASE_DIR;
int r; int r;
_cleanup_close_ int atfd = -EBADF;
assert(hierarchy); assert(hierarchy);
assert(ret_resolved_mutable_directory); assert(ret_resolved_mutable_directory);
@ -943,6 +946,14 @@ static int resolve_mutable_directory(
r = mkdir_p(path_in_root, 0700); r = mkdir_p(path_in_root, 0700);
if (r < 0) if (r < 0)
return log_error_errno(r, "Failed to create a directory '%s': %m", path_in_root); return log_error_errno(r, "Failed to create a directory '%s': %m", path_in_root);
atfd = open(path_in_root, O_DIRECTORY|O_CLOEXEC);
if (atfd < 0)
return log_error_errno(errno, "Failed to open directory '%s': %m", path_in_root);
r = mac_selinux_fix_full(atfd, NULL, hierarchy, 0);
if (r < 0)
return log_error_errno(r, "Failed to fix SELinux label for '%s': %m", path_in_root);
} }
r = chase(path, root, CHASE_PREFIX_ROOT, &resolved_path, NULL); r = chase(path, root, CHASE_PREFIX_ROOT, &resolved_path, NULL);
@ -1289,6 +1300,7 @@ static int mount_overlayfs_with_op(
int r; int r;
const char *top_layer = NULL; const char *top_layer = NULL;
_cleanup_close_ int atfd = -EBADF;
assert(op); assert(op);
assert(overlay_path); assert(overlay_path);
@ -1301,10 +1313,28 @@ static int mount_overlayfs_with_op(
if (r < 0) if (r < 0)
return log_error_errno(r, "Failed to make directory '%s': %m", meta_path); return log_error_errno(r, "Failed to make directory '%s': %m", meta_path);
atfd = open(meta_path, O_DIRECTORY|O_CLOEXEC);
if (atfd < 0)
return log_error_errno(errno, "Failed to open directory '%s': %m", meta_path);
r = mac_selinux_fix_full(atfd, NULL, op->hierarchy, 0);
if (r < 0)
return log_error_errno(r, "Failed to fix SELinux label for '%s': %m", meta_path);
if (op->upper_dir && op->work_dir) { if (op->upper_dir && op->work_dir) {
r = mkdir_p(op->work_dir, 0700); r = mkdir_p(op->work_dir, 0700);
if (r < 0) if (r < 0)
return log_error_errno(r, "Failed to make directory '%s': %m", op->work_dir); return log_error_errno(r, "Failed to make directory '%s': %m", op->work_dir);
_cleanup_close_ int dfd = -EBADF;
dfd = open(op->work_dir, O_DIRECTORY|O_CLOEXEC);
if (dfd < 0)
return log_error_errno(errno, "Failed to open directory '%s': %m", op->work_dir);
r = mac_selinux_fix_full(dfd, NULL, op->hierarchy, 0);
if (r < 0)
return log_error_errno(r, "Failed to fix SELinux label for '%s': %m", op->work_dir);
top_layer = op->upper_dir; top_layer = op->upper_dir;
} else { } else {
assert(!strv_isempty(op->lower_dirs)); assert(!strv_isempty(op->lower_dirs));
@ -1325,7 +1355,7 @@ static int mount_overlayfs_with_op(
return 0; return 0;
} }
static int write_extensions_file(ImageClass image_class, char **extensions, const char *meta_path) { static int write_extensions_file(ImageClass image_class, char **extensions, const char *meta_path, const char *hierarchy) {
_cleanup_free_ char *f = NULL, *buf = NULL; _cleanup_free_ char *f = NULL, *buf = NULL;
int r; int r;
@ -1343,14 +1373,15 @@ static int write_extensions_file(ImageClass image_class, char **extensions, cons
if (!buf) if (!buf)
return log_oom(); return log_oom();
r = write_string_file(f, buf, WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_MKDIR_0755); const char *hierarchy_path = path_join(hierarchy, image_class_info[image_class].dot_directory_name, image_class_info[image_class].short_identifier_plural);
r = write_string_file_full(AT_FDCWD,f, buf, WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_MKDIR_0755|WRITE_STRING_FILE_LABEL, NULL, hierarchy_path);
if (r < 0) if (r < 0)
return log_error_errno(r, "Failed to write extension meta file '%s': %m", f); return log_error_errno(r, "Failed to write extension meta file '%s': %m", f);
return 0; return 0;
} }
static int write_dev_file(ImageClass image_class, const char *meta_path, const char *overlay_path) { static int write_dev_file(ImageClass image_class, const char *meta_path, const char *overlay_path, const char *hierarchy) {
_cleanup_free_ char *f = NULL; _cleanup_free_ char *f = NULL;
struct stat st; struct stat st;
int r; int r;
@ -1372,14 +1403,15 @@ static int write_dev_file(ImageClass image_class, const char *meta_path, const c
/* Modifying the underlying layers while the overlayfs is mounted is technically undefined, but at /* Modifying the underlying layers while the overlayfs is mounted is technically undefined, but at
* least it won't crash or deadlock, as per the kernel docs about overlayfs: * least it won't crash or deadlock, as per the kernel docs about overlayfs:
* https://www.kernel.org/doc/html/latest/filesystems/overlayfs.html#changes-to-underlying-filesystems */ * https://www.kernel.org/doc/html/latest/filesystems/overlayfs.html#changes-to-underlying-filesystems */
r = write_string_file(f, FORMAT_DEVNUM(st.st_dev), WRITE_STRING_FILE_CREATE); const char *hierarchy_path = path_join(hierarchy, image_class_info[image_class].dot_directory_name, image_class_info[image_class].short_identifier_plural);
r = write_string_file_full(AT_FDCWD, f, FORMAT_DEVNUM(st.st_dev), WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_LABEL, NULL, hierarchy_path);
if (r < 0) if (r < 0)
return log_error_errno(r, "Failed to write '%s': %m", f); return log_error_errno(r, "Failed to write '%s': %m", f);
return 0; return 0;
} }
static int write_work_dir_file(ImageClass image_class, const char *meta_path, const char *work_dir) { static int write_work_dir_file(ImageClass image_class, const char *meta_path, const char *work_dir, const char* hierarchy) {
_cleanup_free_ char *escaped_work_dir_in_root = NULL, *f = NULL; _cleanup_free_ char *escaped_work_dir_in_root = NULL, *f = NULL;
char *work_dir_in_root = NULL; char *work_dir_in_root = NULL;
int r; int r;
@ -1406,7 +1438,8 @@ static int write_work_dir_file(ImageClass image_class, const char *meta_path, co
escaped_work_dir_in_root = cescape(work_dir_in_root); escaped_work_dir_in_root = cescape(work_dir_in_root);
if (!escaped_work_dir_in_root) if (!escaped_work_dir_in_root)
return log_oom(); return log_oom();
r = write_string_file(f, escaped_work_dir_in_root, WRITE_STRING_FILE_CREATE); const char *hierarchy_path = path_join(hierarchy, image_class_info[image_class].dot_directory_name, "work_dir");
r = write_string_file_full(AT_FDCWD, f, escaped_work_dir_in_root, WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_LABEL, NULL, hierarchy_path);
if (r < 0) if (r < 0)
return log_error_errno(r, "Failed to write '%s': %m", f); return log_error_errno(r, "Failed to write '%s': %m", f);
@ -1418,8 +1451,10 @@ static int store_info_in_meta(
char **extensions, char **extensions,
const char *meta_path, const char *meta_path,
const char *overlay_path, const char *overlay_path,
const char *work_dir) { const char *work_dir,
const char *hierarchy) {
_cleanup_free_ char *f = NULL;
_cleanup_close_ int atfd = -EBADF;
int r; int r;
assert(extensions); assert(extensions);
@ -1427,15 +1462,32 @@ static int store_info_in_meta(
assert(overlay_path); assert(overlay_path);
/* work_dir may be NULL */ /* work_dir may be NULL */
r = write_extensions_file(image_class, extensions, meta_path); f = path_join(meta_path, image_class_info[image_class].dot_directory_name);
if (!f)
return log_oom();
r = mkdir_p(f, 0755);
if (r < 0) if (r < 0)
return r; return r;
r = write_dev_file(image_class, meta_path, overlay_path); atfd = open(f, O_DIRECTORY|O_CLOEXEC);
if (atfd < 0)
return log_error_errno(errno, "Failed to open directory '%s': %m", f);
r = mac_selinux_fix_full(atfd, NULL, hierarchy, 0);
if (r < 0)
return log_error_errno(r, "Failed to fix SELinux label for '%s': %m", hierarchy);
r = write_extensions_file(image_class, extensions, meta_path, hierarchy);
if (r < 0) if (r < 0)
return r; return r;
r = write_work_dir_file(image_class, meta_path, work_dir); r = write_dev_file(image_class, meta_path, overlay_path, hierarchy);
if (r < 0)
return r;
r = write_work_dir_file(image_class, meta_path, work_dir, hierarchy);
if (r < 0) if (r < 0)
return r; return r;
@ -1501,6 +1553,8 @@ static int merge_hierarchy(
assert(overlay_path); assert(overlay_path);
assert(workspace_path); assert(workspace_path);
mac_selinux_init();
r = determine_used_extensions(hierarchy, paths, &used_paths, &extensions_used); r = determine_used_extensions(hierarchy, paths, &used_paths, &extensions_used);
if (r < 0) if (r < 0)
return r; return r;
@ -1528,7 +1582,7 @@ static int merge_hierarchy(
if (r < 0) if (r < 0)
return r; return r;
r = store_info_in_meta(image_class, extensions, meta_path, overlay_path, op->work_dir); r = store_info_in_meta(image_class, extensions, meta_path, overlay_path, op->work_dir, op->hierarchy);
if (r < 0) if (r < 0)
return r; return r;

View File

@ -29,7 +29,7 @@ static int apply_timestamp(const char *path, struct timespec *ts) {
timespec_load_nsec(ts)) < 0) timespec_load_nsec(ts)) < 0)
return log_oom(); return log_oom();
r = write_string_file_full(AT_FDCWD, path, message, WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_ATOMIC|WRITE_STRING_FILE_LABEL, ts); r = write_string_file_full(AT_FDCWD, path, message, WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_ATOMIC|WRITE_STRING_FILE_LABEL, ts, NULL);
if (r == -EROFS) if (r == -EROFS)
log_debug_errno(r, "Cannot create \"%s\", file system is read-only.", path); log_debug_errno(r, "Cannot create \"%s\", file system is read-only.", path);
else if (r < 0) else if (r < 0)

View File

@ -22,6 +22,11 @@ trap at_exit EXIT
systemctl service-log-level systemd-machined debug systemctl service-log-level systemd-machined debug
systemctl service-log-level systemd-importd debug systemctl service-log-level systemd-importd debug
# per request in https://github.com/systemd/systemd/pull/35117
systemctl edit --runtime --stdin 'systemd-nspawn@.service' --drop-in=debug.conf <<EOF
[Service]
Environment=SYSTEMD_LOG_LEVEL=debug
EOF
# Mount temporary directory over /var/lib/machines to not pollute the image # Mount temporary directory over /var/lib/machines to not pollute the image
mkdir -p /var/lib/machines mkdir -p /var/lib/machines
@ -278,13 +283,13 @@ varlinkctl call /run/systemd/machine/io.systemd.Machine io.systemd.Machine.List
# sending TRAP signal # sending TRAP signal
rm -f /var/lib/machines/long-running/trap rm -f /var/lib/machines/long-running/trap
varlinkctl call /run/systemd/machine/io.systemd.Machine io.systemd.Machine.Kill '{"name":"long-running", "whom": "leader", "signal": 5}' varlinkctl call /run/systemd/machine/io.systemd.Machine io.systemd.Machine.Kill '{"name":"long-running", "whom": "leader", "signal": 5}'
timeout 30 bash -c "until test -e /var/lib/machines/long-running/trap; do sleep .5; done" timeout 120 bash -c "until test -e /var/lib/machines/long-running/trap; do sleep .5; done"
# test io.systemd.Machine.Terminate # test io.systemd.Machine.Terminate
long_running_machine_start long_running_machine_start
rm -f /var/lib/machines/long-running/terminate rm -f /var/lib/machines/long-running/terminate
varlinkctl call /run/systemd/machine/io.systemd.Machine io.systemd.Machine.Terminate '{"name":"long-running"}' varlinkctl call /run/systemd/machine/io.systemd.Machine io.systemd.Machine.Terminate '{"name":"long-running"}'
timeout 10 bash -c "until test -e /var/lib/machines/long-running/terminate; do sleep .5; done" timeout 30 bash -c "until test -e /var/lib/machines/long-running/terminate; do sleep .5; done"
timeout 30 bash -c "while varlinkctl call /run/systemd/machine/io.systemd.Machine io.systemd.Machine.List '{\"name\":\"long-running\"}'; do sleep 0.5; done" timeout 30 bash -c "while varlinkctl call /run/systemd/machine/io.systemd.Machine io.systemd.Machine.List '{\"name\":\"long-running\"}'; do sleep 0.5; done"
# test io.systemd.Machine.Register # test io.systemd.Machine.Register
@ -356,7 +361,7 @@ journalctl --sync
machinectl terminate container-without-os-release machinectl terminate container-without-os-release
machinectl terminate long-running machinectl terminate long-running
# wait for the container being stopped, otherwise acquiring image metadata by io.systemd.MachineImage.List may fail in the below. # wait for the container being stopped, otherwise acquiring image metadata by io.systemd.MachineImage.List may fail in the below.
timeout 10 bash -c "while machinectl status long-running &>/dev/null; do sleep .5; done" timeout 30 bash -c "while machinectl status long-running &>/dev/null; do sleep .5; done"
systemctl kill --signal=KILL systemd-nspawn@long-running.service || : systemctl kill --signal=KILL systemd-nspawn@long-running.service || :
(ip addr show lo | grep -q 192.168.1.100) || ip address add 192.168.1.100/24 dev lo (ip addr show lo | grep -q 192.168.1.100) || ip address add 192.168.1.100/24 dev lo