diff options
| -rw-r--r-- | tools/virtiofsd/passthrough_ll.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c index e49650b63d..3ba1d90984 100644 --- a/tools/virtiofsd/passthrough_ll.c +++ b/tools/virtiofsd/passthrough_ll.c @@ -2531,6 +2531,17 @@ static void print_capabilities(void) } /* + * Drop all Linux capabilities because the wait parent process only needs to + * sit in waitpid(2) and terminate. + */ +static void setup_wait_parent_capabilities(void) +{ + capng_setpid(syscall(SYS_gettid)); + capng_clear(CAPNG_SELECT_BOTH); + capng_apply(CAPNG_SELECT_BOTH); +} + +/* * Move to a new mount, net, and pid namespaces to isolate this process. */ static void setup_namespaces(struct lo_data *lo, struct fuse_session *se) @@ -2563,6 +2574,8 @@ static void setup_namespaces(struct lo_data *lo, struct fuse_session *se) pid_t waited; int wstatus; + setup_wait_parent_capabilities(); + /* The parent waits for the child */ do { waited = waitpid(child, &wstatus, 0); |