diff options
| author | Iago López Galeiras <iago@endocode.com> | 2015-05-13 15:45:48 +0200 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2015-05-13 15:56:59 +0200 |
| commit | 54b4755f15438c86991d5a4eaadc47150f7e5a84 (patch) | |
| tree | a351cd2f566f8928c2294040527d65a0469dc669 | |
| parent | f00929ad622c978f8ad83590a15a765b4beecac9 (diff) | |
nspawn: only mount the cgroup root if it's not already mounted
This allows the user to set the cgroups manually before calling nspawn.
| -rw-r--r-- | src/nspawn/nspawn.c | 27 |
1 files changed, 13 insertions, 14 deletions
diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c index 8c91726aeb..1ba55932bf 100644 --- a/src/nspawn/nspawn.c +++ b/src/nspawn/nspawn.c @@ -1031,18 +1031,19 @@ static int mount_all(const char *dest) { } MountPoint; static const MountPoint mount_table[] = { - { "proc", "/proc", "proc", NULL, MS_NOSUID|MS_NOEXEC|MS_NODEV, true }, - { "/proc/sys", "/proc/sys", NULL, NULL, MS_BIND, true }, /* Bind mount first */ - { NULL, "/proc/sys", NULL, NULL, MS_BIND|MS_RDONLY|MS_REMOUNT, true }, /* Then, make it r/o */ - { "sysfs", "/sys", "sysfs", NULL, MS_RDONLY|MS_NOSUID|MS_NOEXEC|MS_NODEV, true }, - { "tmpfs", "/dev", "tmpfs", "mode=755", MS_NOSUID|MS_STRICTATIME, true }, - { "devpts", "/dev/pts", "devpts","newinstance,ptmxmode=0666,mode=620,gid=" STRINGIFY(TTY_GID), MS_NOSUID|MS_NOEXEC, true }, - { "tmpfs", "/dev/shm", "tmpfs", "mode=1777", MS_NOSUID|MS_NODEV|MS_STRICTATIME, true }, - { "tmpfs", "/run", "tmpfs", "mode=755", MS_NOSUID|MS_NODEV|MS_STRICTATIME, true }, - { "tmpfs", "/tmp", "tmpfs", "mode=1777", MS_STRICTATIME, true }, + { "proc", "/proc", "proc", NULL, MS_NOSUID|MS_NOEXEC|MS_NODEV, true }, + { "/proc/sys", "/proc/sys", NULL, NULL, MS_BIND, true }, /* Bind mount first */ + { NULL, "/proc/sys", NULL, NULL, MS_BIND|MS_RDONLY|MS_REMOUNT, true }, /* Then, make it r/o */ + { "sysfs", "/sys", "sysfs", NULL, MS_RDONLY|MS_NOSUID|MS_NOEXEC|MS_NODEV, true }, + { "tmpfs", "/sys/fs/cgroup", "tmpfs", "mode=755", MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_STRICTATIME, true }, + { "tmpfs", "/dev", "tmpfs", "mode=755", MS_NOSUID|MS_STRICTATIME, true }, + { "devpts", "/dev/pts", "devpts", "newinstance,ptmxmode=0666,mode=620,gid=" STRINGIFY(TTY_GID), MS_NOSUID|MS_NOEXEC, true }, + { "tmpfs", "/dev/shm", "tmpfs", "mode=1777", MS_NOSUID|MS_NODEV|MS_STRICTATIME, true }, + { "tmpfs", "/run", "tmpfs", "mode=755", MS_NOSUID|MS_NODEV|MS_STRICTATIME, true }, + { "tmpfs", "/tmp", "tmpfs", "mode=1777", MS_STRICTATIME, true }, #ifdef HAVE_SELINUX - { "/sys/fs/selinux", "/sys/fs/selinux", NULL, NULL, MS_BIND, false }, /* Bind mount first */ - { NULL, "/sys/fs/selinux", NULL, NULL, MS_BIND|MS_RDONLY|MS_REMOUNT, false }, /* Then, make it r/o */ + { "/sys/fs/selinux", "/sys/fs/selinux", NULL, NULL, MS_BIND, false }, /* Bind mount first */ + { NULL, "/sys/fs/selinux", NULL, NULL, MS_BIND|MS_RDONLY|MS_REMOUNT, false }, /* Then, make it r/o */ #endif }; @@ -1324,9 +1325,6 @@ static int mount_cgroup(const char *dest) { if (r < 0) return log_error_errno(r, "Failed to determine our own cgroup path: %m"); - cgroup_root = strjoina(dest, "/sys/fs/cgroup"); - if (mount("tmpfs", cgroup_root, "tmpfs", MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_STRICTATIME, "mode=755") < 0) - return log_error_errno(errno, "Failed to mount tmpfs to /sys/fs/cgroup: %m"); for (;;) { _cleanup_free_ char *controller = NULL, *origin = NULL, *combined = NULL; @@ -1386,6 +1384,7 @@ static int mount_cgroup(const char *dest) { 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"); + cgroup_root = strjoina(dest, "/sys/fs/cgroup"); 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); |