lib/libgeom/geom_ctl.c

54 gctl_dump(struct gctl_req *req, FILE *f)
60 	if (req == NULL) {
64 	fprintf(f, "Dump of gctl request at %p:\n", req);
65 	if (req->error != NULL)
66 		fprintf(f, "  error:\t\"%s\"\n", req->error);
69 	for (i = 0; i < req->narg; i++) {
70 		ap = &req->arg[i];
95 gctl_set_error(struct gctl_req *req, const char *error, ...)
99 	if (req->error != NULL)
102 	vasprintf(&req->error, error, ap);
111 gctl_check_alloc(struct gctl_req *req, void *ptr)
116 	gctl_set_error(req, nomemmsg);
117 	if (req->error == NULL)
118 		req->error = nomemmsg;
136 gctl_new_arg(struct gctl_req *req)
140 	req->narg++;
141 	req->arg = reallocf(req->arg, sizeof *ap * req->narg);
142 	gctl_check_alloc(req, req->arg);
143 	if (req->arg == NULL) {
144 		req->narg = 0;
147 	ap = req->arg + (req->narg - 1);
153 gctl_param_add(struct gctl_req *req, const char *name, int len, void *value,
158 	if (req == NULL || req->error != NULL)
160 	ap = gctl_new_arg(req);
164 	gctl_check_alloc(req, ap->name);
179 gctl_ro_param(struct gctl_req *req, const char *name, int len, const void* value)
182 	gctl_param_add(req, name, len, __DECONST(void *, value), GCTL_PARAM_RD);
186 gctl_rw_param(struct gctl_req *req, const char *name, int len, void *value)
189 	gctl_param_add(req, name, len, value, GCTL_PARAM_RW);
193 gctl_issue(struct gctl_req *req)
197 	if (req == NULL)
199 	if (req->error != NULL)
200 		return (req->error);
202 	req->version = GCTL_VERSION;
203 	req->lerror = BUFSIZ;		/* XXX: arbitrary number */
204 	req->error = calloc(1, req->lerror);
205 	if (req->error == NULL) {
206 		gctl_check_alloc(req, req->error);
207 		return (req->error);
209 	req->lerror--;
213 	error = ioctl(fd, GEOM_CTL, req);
215 	if (req->error[0] != '\0')
216 		return (req->error);
223 gctl_free(struct gctl_req *req)
227 	if (req == NULL)
229 	for (i = 0; i < req->narg; i++) {
230 		if (req->arg[i].name != NULL)
231 			free(req->arg[i].name);
233 	free(req->arg);
234 	if (req->error != NULL && req->error != nomemmsg)
235 		free(req->error);
236 	free(req);