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authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2016-10-10 15:55:20 -0400
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2016-10-11 16:50:07 -0400
commit60e76d4897d48d2187f8bf129147aaf4eb81a59f (patch)
tree52690210b36e6667a0fccce32402c18d17586e44
parentadd554f4e16f3ece6bca1448a5ef4f859984fd8d (diff)
nspawn,mount-util: add [u]mount_verbose and use it in nspawn
This makes it easier to debug failed nspawn invocations: Mounting sysfs on /var/lib/machines/fedora-rawhide/sys (MS_RDONLY|MS_NOSUID|MS_NOEXEC|MS_NODEV "")... Mounting tmpfs on /var/lib/machines/fedora-rawhide/dev (MS_NOSUID|MS_STRICTATIME "mode=755,uid=1450901504,gid=1450901504")... Mounting tmpfs on /var/lib/machines/fedora-rawhide/dev/shm (MS_NOSUID|MS_NODEV|MS_STRICTATIME "mode=1777,uid=1450901504,gid=1450901504")... Mounting tmpfs on /var/lib/machines/fedora-rawhide/run (MS_NOSUID|MS_NODEV|MS_STRICTATIME "mode=755,uid=1450901504,gid=1450901504")... Bind-mounting /sys/fs/selinux on /var/lib/machines/fedora-rawhide/sys/fs/selinux (MS_BIND "")... Remounting /var/lib/machines/fedora-rawhide/sys/fs/selinux (MS_RDONLY|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_BIND|MS_REMOUNT "")... Mounting proc on /proc (MS_NOSUID|MS_NOEXEC|MS_NODEV "")... Bind-mounting /proc/sys on /proc/sys (MS_BIND "")... Remounting /proc/sys (MS_RDONLY|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_BIND|MS_REMOUNT "")... Bind-mounting /proc/sysrq-trigger on /proc/sysrq-trigger (MS_BIND "")... Remounting /proc/sysrq-trigger (MS_RDONLY|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_BIND|MS_REMOUNT "")... Mounting tmpfs on /tmp (MS_STRICTATIME "mode=1777,uid=0,gid=0")... Mounting tmpfs on /sys/fs/cgroup (MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_STRICTATIME "mode=755,uid=0,gid=0")... Mounting cgroup on /sys/fs/cgroup/systemd (MS_NOSUID|MS_NOEXEC|MS_NODEV "none,name=systemd,xattr")... Failed to mount cgroup on /sys/fs/cgroup/systemd (MS_NOSUID|MS_NOEXEC|MS_NODEV "none,name=systemd,xattr"): No such file or directory
-rw-r--r--src/basic/mount-util.c105
-rw-r--r--src/basic/mount-util.h9
-rw-r--r--src/nspawn/nspawn-cgroup.c13
-rw-r--r--src/nspawn/nspawn-mount.c162
-rw-r--r--src/nspawn/nspawn.c78
5 files changed, 236 insertions, 131 deletions
diff --git a/src/basic/mount-util.c b/src/basic/mount-util.c
index b9affb4e70..0ef00676ef 100644
--- a/src/basic/mount-util.c
+++ b/src/basic/mount-util.c
@@ -581,3 +581,108 @@ const char* mode_to_inaccessible_node(mode_t mode) {
}
return NULL;
}
+
+#define FLAG(name) (flags & name ? STRINGIFY(name) "|" : "")
+static char* mount_flags_to_string(long unsigned flags) {
+ char *x;
+ _cleanup_free_ char *y = NULL;
+ long unsigned overflow;
+
+ overflow = flags & ~(MS_RDONLY |
+ MS_NOSUID |
+ MS_NODEV |
+ MS_NOEXEC |
+ MS_SYNCHRONOUS |
+ MS_REMOUNT |
+ MS_MANDLOCK |
+ MS_DIRSYNC |
+ MS_NOATIME |
+ MS_NODIRATIME |
+ MS_BIND |
+ MS_MOVE |
+ MS_REC |
+ MS_SILENT |
+ MS_POSIXACL |
+ MS_UNBINDABLE |
+ MS_PRIVATE |
+ MS_SLAVE |
+ MS_SHARED |
+ MS_RELATIME |
+ MS_KERNMOUNT |
+ MS_I_VERSION |
+ MS_STRICTATIME |
+ MS_LAZYTIME);
+
+ if (flags == 0 || overflow != 0)
+ if (asprintf(&y, "%lx", overflow) < 0)
+ return NULL;
+
+ x = strjoin(FLAG(MS_RDONLY),
+ FLAG(MS_NOSUID),
+ FLAG(MS_NODEV),
+ FLAG(MS_NOEXEC),
+ FLAG(MS_SYNCHRONOUS),
+ FLAG(MS_REMOUNT),
+ FLAG(MS_MANDLOCK),
+ FLAG(MS_DIRSYNC),
+ FLAG(MS_NOATIME),
+ FLAG(MS_NODIRATIME),
+ FLAG(MS_BIND),
+ FLAG(MS_MOVE),
+ FLAG(MS_REC),
+ FLAG(MS_SILENT),
+ FLAG(MS_POSIXACL),
+ FLAG(MS_UNBINDABLE),
+ FLAG(MS_PRIVATE),
+ FLAG(MS_SLAVE),
+ FLAG(MS_SHARED),
+ FLAG(MS_RELATIME),
+ FLAG(MS_KERNMOUNT),
+ FLAG(MS_I_VERSION),
+ FLAG(MS_STRICTATIME),
+ FLAG(MS_LAZYTIME),
+ y, NULL);
+ if (!x)
+ return NULL;
+ if (!y)
+ x[strlen(x) - 1] = '\0'; /* truncate the last | */
+ return x;
+}
+
+int mount_verbose(
+ int error_log_level,
+ const char *what,
+ const char *where,
+ const char *type,
+ unsigned long flags,
+ const char *options) {
+
+ _cleanup_free_ char *fl = NULL;
+
+ fl = mount_flags_to_string(flags);
+
+ if ((flags & MS_REMOUNT) && !what && !type)
+ log_debug("Remounting %s (%s \"%s\")...",
+ where, strnull(fl), strempty(options));
+ else if (!what && !type)
+ log_debug("Mounting %s (%s \"%s\")...",
+ where, strnull(fl), strempty(options));
+ else if ((flags & MS_BIND) && !type)
+ log_debug("Bind-mounting %s on %s (%s \"%s\")...",
+ what, where, strnull(fl), strempty(options));
+ else
+ log_debug("Mounting %s on %s (%s \"%s\")...",
+ strna(type), where, strnull(fl), strempty(options));
+ if (mount(what, where, type, flags, options) < 0)
+ return log_full_errno(error_log_level, errno,
+ "Failed to mount %s on %s (%s \"%s\"): %m",
+ strna(type), where, strnull(fl), strempty(options));
+ return 0;
+}
+
+int umount_verbose(const char *what) {
+ log_debug("Umounting %s...", what);
+ if (umount(what) < 0)
+ return log_error_errno(errno, "Failed to unmount %s: %m", what);
+ return 0;
+}
diff --git a/src/basic/mount-util.h b/src/basic/mount-util.h
index 74730de663..4f305df19f 100644
--- a/src/basic/mount-util.h
+++ b/src/basic/mount-util.h
@@ -52,3 +52,12 @@ union file_handle_union {
const char* mode_to_inaccessible_node(mode_t mode);
#define FILE_HANDLE_INIT { .handle.handle_bytes = MAX_HANDLE_SZ }
+
+int mount_verbose(
+ int error_log_level,
+ const char *what,
+ const char *where,
+ const char *type,
+ unsigned long flags,
+ const char *options);
+int umount_verbose(const char *where);
diff --git a/src/nspawn/nspawn-cgroup.c b/src/nspawn/nspawn-cgroup.c
index aa0da04955..6793df1286 100644
--- a/src/nspawn/nspawn-cgroup.c
+++ b/src/nspawn/nspawn-cgroup.c
@@ -23,6 +23,7 @@
#include "fd-util.h"
#include "fileio.h"
#include "mkdir.h"
+#include "mount-util.h"
#include "nspawn-cgroup.h"
#include "string-util.h"
#include "strv.h"
@@ -90,13 +91,13 @@ int sync_cgroup(pid_t pid, CGroupUnified unified_requested) {
return log_error_errno(errno, "Failed to generate temporary mount point for unified hierarchy: %m");
if (unified)
- r = mount("cgroup", tree, "cgroup", MS_NOSUID|MS_NOEXEC|MS_NODEV, "none,name=systemd,xattr");
+ r = mount_verbose(LOG_ERR, "cgroup", tree, "cgroup",
+ MS_NOSUID|MS_NOEXEC|MS_NODEV, "none,name=systemd,xattr");
else
- r = mount("cgroup", tree, "cgroup2", MS_NOSUID|MS_NOEXEC|MS_NODEV, NULL);
- if (r < 0) {
- r = log_error_errno(errno, "Failed to mount unified hierarchy: %m");
+ r = mount_verbose(LOG_ERR, "cgroup", tree, "cgroup2",
+ MS_NOSUID|MS_NOEXEC|MS_NODEV, NULL);
+ if (r < 0)
goto finish;
- }
undo_mount = true;
@@ -110,7 +111,7 @@ int sync_cgroup(pid_t pid, CGroupUnified unified_requested) {
finish:
if (undo_mount)
- (void) umount(tree);
+ (void) umount_verbose(tree);
(void) rmdir(tree);
return r;
diff --git a/src/nspawn/nspawn-mount.c b/src/nspawn/nspawn-mount.c
index 02dc94cfe1..da5bc68a89 100644
--- a/src/nspawn/nspawn-mount.c
+++ b/src/nspawn/nspawn-mount.c
@@ -250,8 +250,10 @@ int mount_sysfs(const char *dest) {
(void) mkdir(full, 0755);
- if (mount("sysfs", full, "sysfs", MS_RDONLY|MS_NOSUID|MS_NOEXEC|MS_NODEV, NULL) < 0)
- return log_error_errno(errno, "Failed to mount sysfs to %s: %m", full);
+ r = mount_verbose(LOG_ERR, "sysfs", full, "sysfs",
+ MS_RDONLY|MS_NOSUID|MS_NOEXEC|MS_NODEV, NULL);
+ if (r < 0)
+ return r;
FOREACH_STRING(x, "block", "bus", "class", "dev", "devices", "kernel") {
_cleanup_free_ char *from = NULL, *to = NULL;
@@ -266,15 +268,19 @@ int mount_sysfs(const char *dest) {
(void) mkdir(to, 0755);
- if (mount(from, to, NULL, MS_BIND, NULL) < 0)
- return log_error_errno(errno, "Failed to mount /sys/%s into place: %m", x);
+ r = mount_verbose(LOG_ERR, from, to, NULL, MS_BIND, NULL);
+ if (r < 0)
+ return r;
- if (mount(NULL, to, NULL, MS_BIND|MS_RDONLY|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_REMOUNT, NULL) < 0)
- return log_error_errno(errno, "Failed to mount /sys/%s read-only: %m", x);
+ r = mount_verbose(LOG_ERR, NULL, to, NULL,
+ MS_BIND|MS_RDONLY|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_REMOUNT, NULL);
+ if (r < 0)
+ return r;
}
- if (umount(full) < 0)
- return log_error_errno(errno, "Failed to unmount %s: %m", full);
+ r = umount_verbose(full);
+ if (r < 0)
+ return r;
if (rmdir(full) < 0)
return log_error_errno(errno, "Failed to remove %s: %m", full);
@@ -290,10 +296,8 @@ int mount_sysfs(const char *dest) {
(void) mkdir_p(x, 0755);
}
- if (mount(NULL, top, NULL, MS_BIND|MS_RDONLY|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_REMOUNT, NULL) < 0)
- return log_error_errno(errno, "Failed to make %s read-only: %m", top);
-
- return 0;
+ return mount_verbose(LOG_ERR, NULL, top, NULL,
+ MS_BIND|MS_RDONLY|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_REMOUNT, NULL);
}
int mount_all(const char *dest,
@@ -375,17 +379,14 @@ int mount_all(const char *dest,
o = options;
}
- if (mount(mount_table[k].what,
- where,
- mount_table[k].type,
- mount_table[k].flags,
- o) < 0) {
-
- if (mount_table[k].fatal)
- return log_error_errno(errno, "mount(%s) failed: %m", where);
-
- log_warning_errno(errno, "mount(%s) failed, ignoring: %m", where);
- }
+ r = mount_verbose(mount_table[k].fatal ? LOG_ERR : LOG_WARNING,
+ mount_table[k].what,
+ where,
+ mount_table[k].type,
+ mount_table[k].flags,
+ o);
+ if (r < 0 && mount_table[k].fatal)
+ return r;
}
return 0;
@@ -470,12 +471,12 @@ static int mount_bind(const char *dest, CustomMount *m) {
if (r < 0)
return log_error_errno(r, "Failed to create mount point %s: %m", where);
- } else {
+ } else
return log_error_errno(errno, "Failed to stat %s: %m", where);
- }
- if (mount(m->source, where, NULL, mount_flags, mount_opts) < 0)
- return log_error_errno(errno, "mount(%s) failed: %m", where);
+ r = mount_verbose(LOG_ERR, m->source, where, NULL, mount_flags, mount_opts);
+ if (r < 0)
+ return r;
if (m->read_only) {
r = bind_remount_recursive(where, true, NULL);
@@ -510,10 +511,7 @@ static int mount_tmpfs(
return log_oom();
options = r > 0 ? buf : m->options;
- if (mount("tmpfs", where, "tmpfs", MS_NODEV|MS_STRICTATIME, options) < 0)
- return log_error_errno(errno, "tmpfs mount to %s failed: %m", where);
-
- return 0;
+ return mount_verbose(LOG_ERR, "tmpfs", where, "tmpfs", MS_NODEV|MS_STRICTATIME, options);
}
static char *joined_and_escaped_lower_dirs(char * const *lower) {
@@ -575,10 +573,7 @@ static int mount_overlay(const char *dest, CustomMount *m) {
options = strjoina("lowerdir=", lower, ",upperdir=", escaped_source, ",workdir=", escaped_work_dir);
}
- if (mount("overlay", where, "overlay", m->read_only ? MS_RDONLY : 0, options) < 0)
- return log_error_errno(errno, "overlay mount to %s failed: %m", where);
-
- return 0;
+ return mount_verbose(LOG_ERR, "overlay", where, "overlay", m->read_only ? MS_RDONLY : 0, options);
}
int mount_custom(
@@ -665,7 +660,7 @@ static int get_controllers(Set *subsystems) {
static int mount_legacy_cgroup_hierarchy(const char *dest, const char *controller, const char *hierarchy,
CGroupUnified unified_requested, bool read_only) {
- char *to;
+ const char *to, *fstype, *opts;
int r;
to = strjoina(strempty(dest), "/sys/fs/cgroup/", hierarchy);
@@ -681,22 +676,30 @@ static int mount_legacy_cgroup_hierarchy(const char *dest, const char *controlle
/* The superblock mount options of the mount point need to be
* identical to the hosts', and hence writable... */
if (streq(controller, SYSTEMD_CGROUP_CONTROLLER)) {
- if (unified_requested >= CGROUP_UNIFIED_SYSTEMD)
- r = mount("cgroup", to, "cgroup2", MS_NOSUID|MS_NOEXEC|MS_NODEV, NULL);
- else
- r = mount("cgroup", to, "cgroup", MS_NOSUID|MS_NOEXEC|MS_NODEV, "none,name=systemd,xattr");
- } else
- r = mount("cgroup", to, "cgroup", MS_NOSUID|MS_NOEXEC|MS_NODEV, controller);
+ if (unified_requested >= CGROUP_UNIFIED_SYSTEMD) {
+ fstype = "cgroup2";
+ opts = NULL;
+ } else {
+ fstype = "cgroup";
+ opts = "none,name=systemd,xattr";
+ }
+ } else {
+ fstype = "cgroup";
+ opts = controller;
+ }
+ r = mount_verbose(LOG_ERR, "cgroup", to, fstype, MS_NOSUID|MS_NOEXEC|MS_NODEV, opts);
if (r < 0)
- return log_error_errno(errno, "Failed to mount to %s: %m", to);
+ return r;
- /* ... hence let's only make the bind mount read-only, not the
- * superblock. */
+ /* ... hence let's only make the bind mount read-only, not the superblock. */
if (read_only) {
- if (mount(NULL, to, NULL, MS_BIND|MS_REMOUNT|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_RDONLY, NULL) < 0)
- return log_error_errno(errno, "Failed to remount %s read-only: %m", to);
+ r = mount_verbose(LOG_ERR, NULL, to, NULL,
+ MS_BIND|MS_REMOUNT|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_RDONLY, NULL);
+ if (r < 0)
+ return r;
}
+
return 1;
}
@@ -728,8 +731,10 @@ static int mount_legacy_cgns_supported(
if (r < 0)
return log_oom();
- if (mount("tmpfs", cgroup_root, "tmpfs", MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_STRICTATIME, options) < 0)
- return log_error_errno(errno, "Failed to mount /sys/fs/cgroup: %m");
+ r = mount_verbose(LOG_ERR, "tmpfs", cgroup_root, "tmpfs",
+ MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_STRICTATIME, options);
+ if (r < 0)
+ return r;
}
if (cg_all_unified() > 0)
@@ -788,10 +793,9 @@ skip_controllers:
if (r < 0)
return r;
- if (!userns) {
- if (mount(NULL, cgroup_root, NULL, MS_REMOUNT|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_STRICTATIME|MS_RDONLY, "mode=755") < 0)
- return log_error_errno(errno, "Failed to remount %s read-only: %m", cgroup_root);
- }
+ if (!userns)
+ return mount_verbose(LOG_ERR, NULL, cgroup_root, NULL,
+ MS_REMOUNT|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_STRICTATIME|MS_RDONLY, "mode=755");
return 0;
}
@@ -820,8 +824,10 @@ static int mount_legacy_cgns_unsupported(
if (r < 0)
return log_oom();
- if (mount("tmpfs", cgroup_root, "tmpfs", MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_STRICTATIME, options) < 0)
- return log_error_errno(errno, "Failed to mount /sys/fs/cgroup: %m");
+ r = mount_verbose(LOG_ERR, "tmpfs", cgroup_root, "tmpfs",
+ MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_STRICTATIME, options);
+ if (r < 0)
+ return r;
}
if (cg_all_unified() > 0)
@@ -887,10 +893,8 @@ skip_controllers:
if (r < 0)
return r;
- if (mount(NULL, cgroup_root, NULL, MS_REMOUNT|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_STRICTATIME|MS_RDONLY, "mode=755") < 0)
- return log_error_errno(errno, "Failed to remount %s read-only: %m", cgroup_root);
-
- return 0;
+ return mount_verbose(LOG_ERR, NULL, cgroup_root, NULL,
+ MS_REMOUNT|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_STRICTATIME|MS_RDONLY, "mode=755");
}
static int mount_unified_cgroups(const char *dest) {
@@ -917,10 +921,7 @@ static int mount_unified_cgroups(const char *dest) {
return -EINVAL;
}
- if (mount("cgroup", p, "cgroup2", MS_NOSUID|MS_NOEXEC|MS_NODEV, NULL) < 0)
- return log_error_errno(errno, "Failed to mount unified cgroup hierarchy to %s: %m", p);
-
- return 0;
+ return mount_verbose(LOG_ERR, "cgroup", p, "cgroup2", MS_NOSUID|MS_NOEXEC|MS_NODEV, NULL);
}
int mount_cgroups(
@@ -965,14 +966,13 @@ int mount_systemd_cgroup_writable(
}
/* Make our own cgroup a (writable) bind mount */
- if (mount(systemd_own, systemd_own, NULL, MS_BIND, NULL) < 0)
- return log_error_errno(errno, "Failed to turn %s into a bind mount: %m", own_cgroup_path);
+ r = mount_verbose(LOG_ERR, systemd_own, systemd_own, NULL, MS_BIND, NULL);
+ if (r < 0)
+ return r;
/* And then remount the systemd cgroup root read-only */
- if (mount(NULL, systemd_root, NULL, MS_BIND|MS_REMOUNT|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_RDONLY, NULL) < 0)
- return log_error_errno(errno, "Failed to mount cgroup root read-only: %m");
-
- return 0;
+ return mount_verbose(LOG_ERR, NULL, systemd_root, NULL,
+ MS_BIND|MS_REMOUNT|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_RDONLY, NULL);
}
int setup_volatile_state(
@@ -1009,10 +1009,7 @@ int setup_volatile_state(
if (r > 0)
options = buf;
- if (mount("tmpfs", p, "tmpfs", MS_STRICTATIME, options) < 0)
- return log_error_errno(errno, "Failed to mount tmpfs to /var: %m");
-
- return 0;
+ return mount_verbose(LOG_ERR, "tmpfs", p, "tmpfs", MS_STRICTATIME, options);
}
int setup_volatile(
@@ -1045,10 +1042,9 @@ int setup_volatile(
if (r > 0)
options = buf;
- if (mount("tmpfs", template, "tmpfs", MS_STRICTATIME, options) < 0) {
- r = log_error_errno(errno, "Failed to mount tmpfs for root directory: %m");
+ r = mount_verbose(LOG_ERR, "tmpfs", template, "tmpfs", MS_STRICTATIME, options);
+ if (r < 0)
goto fail;
- }
tmpfs_mounted = true;
@@ -1061,10 +1057,9 @@ int setup_volatile(
goto fail;
}
- if (mount(f, t, NULL, MS_BIND|MS_REC, NULL) < 0) {
- r = log_error_errno(errno, "Failed to create /usr bind mount: %m");
+ r = mount_verbose(LOG_ERR, f, t, NULL, MS_BIND|MS_REC, NULL);
+ if (r < 0)
goto fail;
- }
bind_mounted = true;
@@ -1074,10 +1069,9 @@ int setup_volatile(
goto fail;
}
- if (mount(template, directory, NULL, MS_MOVE, NULL) < 0) {
- r = log_error_errno(errno, "Failed to move root mount: %m");
+ r = mount_verbose(LOG_ERR, template, directory, NULL, MS_MOVE, NULL);
+ if (r < 0)
goto fail;
- }
(void) rmdir(template);
@@ -1085,10 +1079,10 @@ int setup_volatile(
fail:
if (bind_mounted)
- (void) umount(t);
+ (void) umount_verbose(t);
if (tmpfs_mounted)
- (void) umount(template);
+ (void) umount_verbose(template);
(void) rmdir(template);
return r;
}
diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
index d62b8c6b82..d95204f71e 100644
--- a/src/nspawn/nspawn.c
+++ b/src/nspawn/nspawn.c
@@ -1316,14 +1316,10 @@ static int setup_resolv_conf(const char *dest) {
* advantage that the container will be able to follow the host's DNS server configuration changes
* transparently. */
- if (mount("/usr/lib/systemd/resolv.conf", where, NULL, MS_BIND, NULL) < 0)
- log_warning_errno(errno, "Failed to mount /etc/resolv.conf in the container, ignoring: %m");
- else {
- if (mount(NULL, where, NULL, MS_BIND|MS_REMOUNT|MS_RDONLY|MS_NOSUID|MS_NODEV, NULL) < 0)
- return log_error_errno(errno, "Failed to remount /etc/resolv.conf read-only: %m");
-
- return 0;
- }
+ r = mount_verbose(LOG_WARNING, "/usr/lib/systemd/resolv.conf", where, NULL, MS_BIND, NULL);
+ if (r >= 0)
+ return mount_verbose(LOG_ERR, NULL, where, NULL,
+ MS_BIND|MS_REMOUNT|MS_RDONLY|MS_NOSUID|MS_NODEV, NULL);
}
/* If that didn't work, let's copy the file */
@@ -1365,10 +1361,10 @@ static int setup_boot_id(const char *dest) {
if (r < 0)
return log_error_errno(r, "Failed to write boot id: %m");
- if (mount(from, to, NULL, MS_BIND, NULL) < 0)
- r = log_error_errno(errno, "Failed to bind mount boot id: %m");
- else if (mount(NULL, to, NULL, MS_BIND|MS_REMOUNT|MS_RDONLY|MS_NOSUID|MS_NODEV, NULL) < 0)
- r = log_error_errno(errno, "Failed to make boot id read-only: %m");
+ r = mount_verbose(LOG_ERR, from, to, NULL, MS_BIND, NULL);
+ if (r >= 0)
+ r = mount_verbose(LOG_ERR, NULL, to, NULL,
+ MS_BIND|MS_REMOUNT|MS_RDONLY|MS_NOSUID|MS_NODEV, NULL);
(void) unlink(from);
return r;
@@ -1430,8 +1426,9 @@ static int copy_devnodes(const char *dest) {
r = touch(to);
if (r < 0)
return log_error_errno(r, "touch (%s) failed: %m", to);
- if (mount(from, to, NULL, MS_BIND, NULL) < 0)
- return log_error_errno(errno, "Both mknod and bind mount (%s) failed: %m", to);
+ r = mount_verbose(LOG_DEBUG, from, to, NULL, MS_BIND, NULL);
+ if (r < 0)
+ return log_error_errno(r, "Both mknod and bind mount (%s) failed: %m", to);
}
r = userns_lchown(to, 0, 0);
@@ -1467,8 +1464,9 @@ static int setup_pts(const char *dest) {
p = prefix_roota(dest, "/dev/pts");
if (mkdir(p, 0755) < 0)
return log_error_errno(errno, "Failed to create /dev/pts: %m");
- if (mount("devpts", p, "devpts", MS_NOSUID|MS_NOEXEC, options) < 0)
- return log_error_errno(errno, "Failed to mount /dev/pts: %m");
+ r = mount_verbose(LOG_ERR, "devpts", p, "devpts", MS_NOSUID|MS_NOEXEC, options);
+ if (r < 0)
+ return r;
r = userns_lchown(p, 0, 0);
if (r < 0)
return log_error_errno(r, "Failed to chown /dev/pts: %m");
@@ -1513,10 +1511,7 @@ static int setup_dev_console(const char *dest, const char *console) {
if (r < 0)
return log_error_errno(r, "touch() for /dev/console failed: %m");
- if (mount(console, to, NULL, MS_BIND, NULL) < 0)
- return log_error_errno(errno, "Bind mount for /dev/console failed: %m");
-
- return 0;
+ return mount_verbose(LOG_ERR, console, to, NULL, MS_BIND, NULL);
}
static int setup_kmsg(const char *dest, int kmsg_socket) {
@@ -1540,8 +1535,9 @@ static int setup_kmsg(const char *dest, int kmsg_socket) {
if (mkfifo(from, 0600) < 0)
return log_error_errno(errno, "mkfifo() for /run/kmsg failed: %m");
- if (mount(from, to, NULL, MS_BIND, NULL) < 0)
- return log_error_errno(errno, "Bind mount for /proc/kmsg failed: %m");
+ r = mount_verbose(LOG_ERR, from, to, NULL, MS_BIND, NULL);
+ if (r < 0)
+ return r;
fd = open(from, O_RDWR|O_NDELAY|O_CLOEXEC);
if (fd < 0)
@@ -1711,7 +1707,8 @@ static int setup_journal(const char *directory) {
if (r < 0)
return log_error_errno(r, "Failed to create %s: %m", q);
- if (mount(p, q, NULL, MS_BIND, NULL) < 0)
+ r = mount_verbose(LOG_DEBUG, p, q, NULL, MS_BIND, NULL);
+ if (r < 0)
return log_error_errno(errno, "Failed to bind mount journal from host into guest: %m");
return 0;
@@ -1776,18 +1773,17 @@ static int setup_propagate(const char *root) {
return log_error_errno(r, "Failed to create /run/systemd/nspawn/incoming: %m");
q = prefix_roota(root, "/run/systemd/nspawn/incoming");
- if (mount(p, q, NULL, MS_BIND, NULL) < 0)
- return log_error_errno(errno, "Failed to install propagation bind mount.");
+ r = mount_verbose(LOG_ERR, p, q, NULL, MS_BIND, NULL);
+ if (r < 0)
+ return r;
- if (mount(NULL, q, NULL, MS_BIND|MS_REMOUNT|MS_RDONLY, NULL) < 0)
- return log_error_errno(errno, "Failed to make propagation mount read-only");
+ r = mount_verbose(LOG_ERR, NULL, q, NULL, MS_BIND|MS_REMOUNT|MS_RDONLY, NULL);
+ if (r < 0)
+ return r;
/* machined will MS_MOVE into that directory, and that's only
* supported for non-shared mounts. */
- if (mount(NULL, q, NULL, MS_SLAVE, NULL) < 0)
- return log_error_errno(errno, "Failed to make propagation mount slave");
-
- return 0;
+ return mount_verbose(LOG_ERR, NULL, q, NULL, MS_SLAVE, NULL);
}
static int setup_image(char **device_path, int *loop_nr) {
@@ -2313,10 +2309,7 @@ static int mount_device(const char *what, const char *where, const char *directo
return -EOPNOTSUPP;
}
- if (mount(what, p, fstype, MS_NODEV|(rw ? 0 : MS_RDONLY), NULL) < 0)
- return log_error_errno(errno, "Failed to mount %s: %m", what);
-
- return 0;
+ return mount_verbose(LOG_ERR, what, p, fstype, MS_NODEV|(rw ? 0 : MS_RDONLY), NULL);
#else
log_error("--image= is not supported, compiled without blkid support.");
return -EOPNOTSUPP;
@@ -2976,8 +2969,9 @@ static int outer_child(
/* Mark everything as slave, so that we still
* receive mounts from the real root, but don't
* propagate mounts to the real root. */
- if (mount(NULL, "/", NULL, MS_SLAVE|MS_REC, NULL) < 0)
- return log_error_errno(errno, "MS_SLAVE|MS_REC failed: %m");
+ r = mount_verbose(LOG_ERR, NULL, "/", NULL, MS_SLAVE|MS_REC, NULL);
+ if (r < 0)
+ return r;
r = mount_devices(directory,
root_device, root_device_rw,
@@ -3023,8 +3017,9 @@ static int outer_child(
}
/* Turn directory into bind mount */
- if (mount(directory, directory, NULL, MS_BIND|MS_REC, NULL) < 0)
- return log_error_errno(errno, "Failed to make bind mount: %m");
+ r = mount_verbose(LOG_ERR, directory, directory, NULL, MS_BIND|MS_REC, NULL);
+ if (r < 0)
+ return r;
/* Mark everything as shared so our mounts get propagated down. This is
* required to make new bind mounts available in systemd services
@@ -3032,8 +3027,9 @@ static int outer_child(
* See https://github.com/systemd/systemd/issues/3860
* Further submounts (such as /dev) done after this will inherit the
* shared propagation mode.*/
- if (mount(NULL, directory, NULL, MS_SHARED|MS_REC, NULL) < 0)
- return log_error_errno(errno, "MS_SHARED|MS_REC failed: %m");
+ r = mount_verbose(LOG_ERR, NULL, directory, NULL, MS_SHARED|MS_REC, NULL);
+ if (r < 0)
+ return r;
r = recursive_chown(directory, arg_uid_shift, arg_uid_range);
if (r < 0)