github/linuxkit
1
0
Fork 0
mirror of https://github.com/linuxkit/linuxkit.git synced 2025-07-25 19:54:38 +00:00
Code Issues Projects Releases Wiki Activity

transfused: hook debug into HUP-toggled run-time debug system

Browse Source
This commit is contained in:
David Sheets 2016-02-11 12:09:30 +00:00
parent 2fec071a41
commit fee789baf1
1 changed files with 6 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
alpine/packages/transfused/transfused.c
View File

@ -17,8 +17,6 @@
int debug = 0; int debug = 0;
int save_trace;
typedef struct { typedef struct {
char * socket9p_root; char * socket9p_root;
} parameters; } parameters;
@ -116,7 +114,7 @@ void copy(copy_thread_state * copy_state) {
read_count = read(from, buf, COPY_BUFSZ); read_count = read(from, buf, COPY_BUFSZ);
if (read_count == -1) die(1, "", "copy %s: error reading: ", descr); if (read_count == -1) die(1, "", "copy %s: error reading: ", descr);
if (save_trace) { if (debug) {
int trace_fd; int trace_fd;
char * trace_path; char * trace_path;
@ -343,14 +341,12 @@ void * handle_connection_thread(void * connection) {
return handle_connection((connection_state *) connection); return handle_connection((connection_state *) connection);
} }
void toggle_save_trace(int sig) { void toggle_debug(int sig) {
save_trace = !save_trace; debug = !debug;
} }
void setup_save_trace() { void setup_debug() {
save_trace = 0; if (SIG_ERR == signal(SIGHUP, toggle_debug))
if (SIG_ERR == signal(SIGHUP, toggle_save_trace))
die(1, "Couldn't set SIGHUP behavior", ""); die(1, "Couldn't set SIGHUP behavior", "");
if (siginterrupt(SIGHUP, 1)) if (siginterrupt(SIGHUP, 1))
@ -377,7 +373,7 @@ int main(int argc, char * argv[]) {
if (asprintf(&events_path, "%s/events", params.socket9p_root) == -1) if (asprintf(&events_path, "%s/events", params.socket9p_root) == -1)
die(1, "", "Couldn't allocate events path: "); die(1, "", "Couldn't allocate events path: ");
setup_save_trace(); setup_debug();
events = open(events_path, O_RDONLY | O_CLOEXEC); events = open(events_path, O_RDONLY | O_CLOEXEC);
if (events != -1) { if (events != -1) {