diff options
| -rw-r--r-- | man/systemd-detect-virt.xml | 17 | ||||
| -rw-r--r-- | src/detect-virt/detect-virt.c | 22 |
2 files changed, 34 insertions, 5 deletions
diff --git a/man/systemd-detect-virt.xml b/man/systemd-detect-virt.xml index 9ea9141d4d..190ab19152 100644 --- a/man/systemd-detect-virt.xml +++ b/man/systemd-detect-virt.xml @@ -139,7 +139,7 @@ </row> <row> - <entry morerows="5">container</entry> + <entry morerows="5">Container</entry> <entry><varname>openvz</varname></entry> <entry>OpenVZ/Virtuozzo</entry> </row> @@ -197,6 +197,18 @@ </varlistentry> <varlistentry> + <term><option>-r</option></term> + <term><option>--chroot</option></term> + + <listitem><para>Detect whether invoked in a + <citerefentry><refentrytitle>chroot</refentrytitle><manvolnum>2</manvolnum></citerefentry> + environment. In this mode no output is written, but the return + value indicates whether the process was invoked in a + <function>chroot()</function> + environment or not.</para></listitem> + </varlistentry> + + <varlistentry> <term><option>-q</option></term> <term><option>--quiet</option></term> @@ -221,7 +233,8 @@ <title>See Also</title> <para> <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, - <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> + <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry><refentrytitle>chroot</refentrytitle><manvolnum>2</manvolnum></citerefentry> </para> </refsect1> diff --git a/src/detect-virt/detect-virt.c b/src/detect-virt/detect-virt.c index dcf4e9749e..0a256c29be 100644 --- a/src/detect-virt/detect-virt.c +++ b/src/detect-virt/detect-virt.c @@ -31,7 +31,8 @@ static bool arg_quiet = false; static enum { ANY_VIRTUALIZATION, ONLY_VM, - ONLY_CONTAINER + ONLY_CONTAINER, + ONLY_CHROOT, } arg_mode = ANY_VIRTUALIZATION; static void help(void) { @@ -41,6 +42,7 @@ static void help(void) { " --version Show package version\n" " -c --container Only detect whether we are run in a container\n" " -v --vm Only detect whether we are run in a VM\n" + " -r --chroot Detect whether we are run in a chroot() environment\n" " -q --quiet Don't output anything, just set return value\n" , program_invocation_short_name); } @@ -55,7 +57,8 @@ static int parse_argv(int argc, char *argv[]) { { "help", no_argument, NULL, 'h' }, { "version", no_argument, NULL, ARG_VERSION }, { "container", no_argument, NULL, 'c' }, - { "vm", optional_argument, NULL, 'v' }, + { "vm", no_argument, NULL, 'v' }, + { "chroot", no_argument, NULL, 'r' }, { "quiet", no_argument, NULL, 'q' }, {} }; @@ -65,7 +68,7 @@ static int parse_argv(int argc, char *argv[]) { assert(argc >= 0); assert(argv); - while ((c = getopt_long(argc, argv, "hqcv", options, NULL)) >= 0) + while ((c = getopt_long(argc, argv, "hqcvr", options, NULL)) >= 0) switch (c) { @@ -88,6 +91,10 @@ static int parse_argv(int argc, char *argv[]) { arg_mode = ONLY_VM; break; + case 'r': + arg_mode = ONLY_CHROOT; + break; + case '?': return -EINVAL; @@ -137,6 +144,15 @@ int main(int argc, char *argv[]) { break; + case ONLY_CHROOT: + r = running_in_chroot(); + if (r < 0) { + log_error_errno(r, "Failed to check for chroot() environment: %m"); + return EXIT_FAILURE; + } + + return r ? EXIT_SUCCESS : EXIT_FAILURE; + case ANY_VIRTUALIZATION: default: r = detect_virtualization(); |