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authorLennart Poettering <lennart@poettering.net>2016-07-14 12:37:28 +0200
committerLennart Poettering <lennart@poettering.net>2016-07-22 15:53:45 +0200
commit29206d4619843252c2e04f20dc03c246547600a2 (patch)
treea30c2f5b2e90f016c5ed46452ac27264f2afae1c /src/libsystemd/sd-bus
parent66dccd8d85aac9f029c626aac8d2b7e58d239b47 (diff)
core: add a concept of "dynamic" user ids, that are allocated as long as a service is running
This adds a new boolean setting DynamicUser= to service files. If set, a new user will be allocated dynamically when the unit is started, and released when it is stopped. The user ID is allocated from the range 61184..65519. The user will not be added to /etc/passwd (but an NSS module to be added later should make it show up in getent passwd). For now, care should be taken that the service writes no files to disk, since this might result in files owned by UIDs that might get assigned dynamically to a different service later on. Later patches will tighten sandboxing in order to ensure that this cannot happen, except for a few selected directories. A simple way to test this is: systemd-run -p DynamicUser=1 /bin/sleep 99999
Diffstat (limited to 'src/libsystemd/sd-bus')
-rw-r--r--src/libsystemd/sd-bus/bus-common-errors.c1
-rw-r--r--src/libsystemd/sd-bus/bus-common-errors.h1
2 files changed, 2 insertions, 0 deletions
diff --git a/src/libsystemd/sd-bus/bus-common-errors.c b/src/libsystemd/sd-bus/bus-common-errors.c
index 02e3bf904c..32be3cdc38 100644
--- a/src/libsystemd/sd-bus/bus-common-errors.c
+++ b/src/libsystemd/sd-bus/bus-common-errors.c
@@ -44,6 +44,7 @@ BUS_ERROR_MAP_ELF_REGISTER const sd_bus_error_map bus_common_errors[] = {
SD_BUS_ERROR_MAP(BUS_ERROR_NO_ISOLATION, EPERM),
SD_BUS_ERROR_MAP(BUS_ERROR_SHUTTING_DOWN, ECANCELED),
SD_BUS_ERROR_MAP(BUS_ERROR_SCOPE_NOT_RUNNING, EHOSTDOWN),
+ SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_DYNAMIC_USER, ESRCH),
SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_MACHINE, ENXIO),
SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_IMAGE, ENOENT),
diff --git a/src/libsystemd/sd-bus/bus-common-errors.h b/src/libsystemd/sd-bus/bus-common-errors.h
index c8f369cb78..befb6fbfe0 100644
--- a/src/libsystemd/sd-bus/bus-common-errors.h
+++ b/src/libsystemd/sd-bus/bus-common-errors.h
@@ -40,6 +40,7 @@
#define BUS_ERROR_NO_ISOLATION "org.freedesktop.systemd1.NoIsolation"
#define BUS_ERROR_SHUTTING_DOWN "org.freedesktop.systemd1.ShuttingDown"
#define BUS_ERROR_SCOPE_NOT_RUNNING "org.freedesktop.systemd1.ScopeNotRunning"
+#define BUS_ERROR_NO_SUCH_DYNAMIC_USER "org.freedesktop.systemd1.NoSuchDynamicUser"
#define BUS_ERROR_NO_SUCH_MACHINE "org.freedesktop.machine1.NoSuchMachine"
#define BUS_ERROR_NO_SUCH_IMAGE "org.freedesktop.machine1.NoSuchImage"