usernsexec: init log fd

lxc-usernsexec uses some functions (e.g. lxc_map_ids()), which are part of the lxc library and thus use the WARN etc. macros to emit log messages. However, it doesn't initialize the log in any way, so these messages go into the ether. lxc-usernsexec currently has no log parameters, so let's just log these to stderr. Someone can do something fancier later if they want. Signed-off-by: Tycho Andersen <tycho@tycho.ws>

usernsexec: init log fd
27abc1fe · Tycho Andersen · Christian Brauner · 2f642144 · 27abc1fe
Unverified Commit 27abc1fe authored Mar 12, 2018 by Tycho Andersen Committed by Christian Brauner Aug 23, 2018
Hide whitespace changes
Inline Side-by-side

Showing with 4 additions and 0 deletions

lxc_usernsexec.c src/lxc/tools/lxc_usernsexec.c +4 -0

No files found.
--- a/src/lxc/tools/lxc_usernsexec.c
+++ b/src/lxc/tools/lxc_usernsexec.c
@@ -53,6 +53,8 @@
 #define MS_SLAVE (1 << 19)
 #endif

+extern int lxc_log_fd;
+
 int unshare(int flags);

 static void usage(const char *name)
@@ -274,6 +276,8 @@ int main(int argc, char *argv[])
 	int pipe1[2],  // child tells parent it has unshared
 	    pipe2[2];  // parent tells child it is mapped and may proceed

+	lxc_log_fd = STDERR_FILENO;
+
 	memset(ttyname0, '\0', sizeof(ttyname0));
 	memset(ttyname1, '\0', sizeof(ttyname1));
 	memset(ttyname2, '\0', sizeof(ttyname2));