lib/libgeom/geom_ctl.c

55 gctl_dump(struct gctl_req *req, FILE *f)
61 	if (req == NULL) {
65 	fprintf(f, "Dump of gctl request at %p:\n", req);
66 	if (req->error != NULL)
67 		fprintf(f, "  error:\t\"%s\"\n", req->error);
70 	for (i = 0; i < req->narg; i++) {
71 		ap = &req->arg[i];
96 gctl_set_error(struct gctl_req *req, const char *error, ...)
100 	if (req->error != NULL)
103 	vasprintf(&req->error, error, ap);
112 gctl_check_alloc(struct gctl_req *req, void *ptr)
117 	gctl_set_error(req, nomemmsg);
118 	if (req->error == NULL)
119 		req->error = nomemmsg;
137 gctl_new_arg(struct gctl_req *req)
141 	req->narg++;
142 	req->arg = reallocf(req->arg, sizeof *ap * req->narg);
143 	gctl_check_alloc(req, req->arg);
144 	if (req->arg == NULL) {
145 		req->narg = 0;
148 	ap = req->arg + (req->narg - 1);
154 gctl_param_add(struct gctl_req *req, const char *name, int len, void *value,
159 	if (req == NULL || req->error != NULL)
161 	ap = gctl_new_arg(req);
165 	gctl_check_alloc(req, ap->name);
180 gctl_ro_param(struct gctl_req *req, const char *name, int len, const void* value)
183 	gctl_param_add(req, name, len, __DECONST(void *, value), GCTL_PARAM_RD);
187 gctl_rw_param(struct gctl_req *req, const char *name, int len, void *value)
190 	gctl_param_add(req, name, len, value, GCTL_PARAM_RW);
194 gctl_issue(struct gctl_req *req)
198 	if (req == NULL)
200 	if (req->error != NULL)
201 		return (req->error);
203 	req->version = GCTL_VERSION;
204 	req->lerror = BUFSIZ;		/* XXX: arbitrary number */
205 	req->error = calloc(1, req->lerror);
206 	if (req->error == NULL) {
207 		gctl_check_alloc(req, req->error);
208 		return (req->error);
210 	req->lerror--;
214 	error = ioctl(fd, GEOM_CTL, req);
216 	if (req->error[0] != '\0')
217 		return (req->error);
224 gctl_free(struct gctl_req *req)
228 	if (req == NULL)
230 	for (i = 0; i < req->narg; i++) {
231 		if (req->arg[i].name != NULL)
232 			free(req->arg[i].name);
234 	free(req->arg);
235 	if (req->error != NULL && req->error != nomemmsg)
236 		free(req->error);
237 	free(req);