Signed-off-by: Miroslav Lichvar <mlich...@redhat.com>
---
phc2sys.8 | 8 ++++++++
phc2sys.c | 3 +++
2 files changed, 11 insertions(+)
diff --git a/phc2sys.8 b/phc2sys.8
index 45cb0e3..4fe1967 100644
--- a/phc2sys.8
+++ b/phc2sys.8
@@ -401,6 +401,14 @@ Same as option
.B \-z
(see above).
+.TP
+.B user
+The name of the user to which should
+.B phc2sys
+switch in order to drop the root privileges. By default,
+.B phc2sys
+will keep the identity of the user under which it is started.
+
.SH TIME SCALE USAGE
.B Ptp4l
diff --git a/phc2sys.c b/phc2sys.c
index 15f8d75..dc28287 100644
--- a/phc2sys.c
+++ b/phc2sys.c
@@ -1633,6 +1633,9 @@ int main(int argc, char *argv[])
goto bad_usage;
}
+ if (drop_root_privileges(config_get_string(cfg, NULL, "user")))
+ goto bad_usage;
+
r = -1;
if (wait_sync) {
--
2.17.1
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