On Wed, 13.05.15 15:45, Iago López Galeiras ([email protected]) wrote:
> This allows the user to set the cgroups manually before calling
> nspawn.
Applied! Thanks!
> ---
> src/nspawn/nspawn.c | 23 +++++++++++------------
> 1 file changed, 11 insertions(+), 12 deletions(-)
>
> diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
> index 8c91726..f292c63 100644
> --- a/src/nspawn/nspawn.c
> +++ b/src/nspawn/nspawn.c
> @@ -1031,15 +1031,16 @@ 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 */
> @@ -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);
>
> --
> 2.4.0
>
> _______________________________________________
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Lennart
--
Lennart Poettering, Red Hat
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