static int
create_conf(const char *spec)
{
char *devname, *unitname, *confpath, *p;
int ret;
devname = evaluate_spec(spec);
if (!devname) {
error("Cannot convert '%s' to device name: %s",
spec, strerror(errno));
return -1;
}
unitname = path_escape(devname);
if (!unitname) {
error("Cannot convert '%s' to systemd unit name: %s",
devname, strerror(errno));
free(devname);
return -1;
}
free(devname);
confpath = malloc(unitdirlen + 1 + strlen(unitname) +
sizeof(".device.d/timeout.conf"));
if (!confpath) {
error("Cannot allocate path for '%s': %s",
unitname, strerror(errno));
free(unitname);
return -1;
}
p = stpcpy(confpath, unitdir);
*p++ = '/';
p = stpcpy(p, unitname);
p = stpcpy(p, ".device.d");
free(unitname);
if (mkdir(confpath, S_IRWXU | S_IRWXG | S_IRWXO) && errno != EEXIST) {
error("Cannot create directory '%s': %s",
confpath, strerror(errno));
free(confpath);
return -1;
}
p = stpcpy(p, "/timeout.conf");
ret = write_conf(confpath);
free(confpath);
return ret;
}
static JSBool
js_httpEscape(JSContext *cx, JSObject *obj,
uintN argc, jsval *argv, jsval *rval)
{
const char *str;
char *r;
if (!JS_ConvertArguments(cx, argc, argv, "s", &str))
return JS_FALSE;
size_t l = strlen(str);
r = malloc((l * 3) + 1);
path_escape(r, l * 3, str);
*rval = STRING_TO_JSVAL(JS_NewString(cx, r, strlen(r)));
return JS_TRUE;
}
static char* ctl_makepath(const char* name, const char* ext)
{
char* res;
char *file;
file = strrchr(name, '/');
if (!file) {
BWPRINTF("invalid name %s\n", name);
return NULL;
}
if (asprintf(&res, BLKTAP_CTRL_DIR "/log_%s.%s", file, ext) < 0) {
BWPRINTF("could not allocate path");
return NULL;
}
path_escape(res + strlen(BLKTAP_CTRL_DIR) + 5, strlen(file));
return res;
}
static int shmem_open(struct tdlog_state* s, const char* name)
{
int i, l, fd;
/* device name -> path */
if (asprintf(&s->shmpath, "/log_%s.wlog", name) < 0) {
BWPRINTF("could not allocate shm path");
return -1;
}
path_escape(s->shmpath + 5, strlen(name));
if ((fd = shm_open(s->shmpath, O_CREAT|O_RDWR, 0750)) < 0) {
BWPRINTF("could not open shared memory file %s: %s", s->shmpath,
strerror(errno));
goto err;
}
if (ftruncate(fd, SHMSIZE) < 0) {
BWPRINTF("error truncating shmem to size %u", SHMSIZE);
close(fd);
goto err;
}
s->shm = mmap(NULL, SHMSIZE, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
close(fd);
if (s->shm == MAP_FAILED) {
BWPRINTF("could not mmap write log shm: %s", strerror(errno));
goto err;
}
return 0;
err:
s->shm = NULL;
free(s->shmpath);
s->shmpath = NULL;
return -1;
}
