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-rw-r--r--src/irmd/reg/flow.c222
-rw-r--r--src/irmd/reg/flow.h83
-rw-r--r--src/irmd/reg/ipcp.c152
-rw-r--r--src/irmd/reg/ipcp.h58
-rw-r--r--src/irmd/reg/name.c451
-rw-r--r--src/irmd/reg/name.h103
-rw-r--r--src/irmd/reg/proc.c265
-rw-r--r--src/irmd/reg/proc.h75
-rw-r--r--src/irmd/reg/prog.c174
-rw-r--r--src/irmd/reg/prog.h52
10 files changed, 1635 insertions, 0 deletions
diff --git a/src/irmd/reg/flow.c b/src/irmd/reg/flow.c
new file mode 100644
index 00000000..30b9c504
--- /dev/null
+++ b/src/irmd/reg/flow.c
@@ -0,0 +1,222 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2023
+ *
+ * The IPC Resource Manager - Registry - Flows
+ *
+ * Dimitri Staessens <dimitri@ouroboros.rocks>
+ * Sander Vrijders <sander@ouroboros.rocks>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., http://www.fsf.org/about/contact/.
+ */
+
+#define _POSIX_C_SOURCE 200112L
+
+#include "config.h"
+
+#define OUROBOROS_PREFIX "reg-flow"
+
+#include <ouroboros/errno.h>
+#include <ouroboros/logs.h>
+#include <ouroboros/time_utils.h>
+#include <ouroboros/pthread.h>
+
+#include "flow.h"
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct reg_flow * reg_flow_create(pid_t n_pid,
+ pid_t n_1_pid,
+ int flow_id,
+ qosspec_t qs)
+{
+ pthread_condattr_t cattr;
+ struct reg_flow * f;
+
+ f = malloc(sizeof(*f));
+ if (f == NULL)
+ goto fail_malloc;
+
+ memset(f, 0, sizeof(*f));
+
+ if (pthread_condattr_init(&cattr))
+ goto fail_cattr;
+
+#ifndef __APPLE__
+ pthread_condattr_setclock(&cattr, PTHREAD_COND_CLOCK);
+#endif
+ if (pthread_cond_init(&f->cond, &cattr))
+ goto fail_cond;
+
+ if (pthread_mutex_init(&f->mtx, NULL))
+ goto fail_mutex;
+
+ f->n_rb = shm_rbuff_create(n_pid, flow_id);
+ if (f->n_rb == NULL) {
+ log_err("Could not create ringbuffer for process %d.", n_pid);
+ goto fail_n_rbuff;
+ }
+
+ f->n_1_rb = shm_rbuff_create(n_1_pid, flow_id);
+ if (f->n_1_rb == NULL) {
+ log_err("Could not create ringbuffer for process %d.", n_1_pid);
+ goto fail_n_1_rbuff;
+ }
+
+ if (clock_gettime(CLOCK_MONOTONIC, &f->t0) < 0)
+ log_warn("Failed to set timestamp.");
+
+ pthread_condattr_destroy(&cattr);
+
+ f->n_pid = n_pid;
+ f->n_1_pid = n_1_pid;
+ f->flow_id = flow_id;
+ f->qs = qs;
+
+ f->state = FLOW_ALLOC_PENDING;
+
+ return f;
+
+ fail_n_1_rbuff:
+ shm_rbuff_destroy(f->n_rb);
+ fail_n_rbuff:
+ pthread_mutex_destroy(&f->mtx);
+ fail_mutex:
+ pthread_cond_destroy(&f->cond);
+ fail_cond:
+ pthread_condattr_destroy(&cattr);
+ fail_cattr:
+ free(f);
+ fail_malloc:
+ return NULL;
+}
+
+static void cancel_irm_destroy(void * o)
+{
+ struct reg_flow * f = (struct reg_flow *) o;
+
+ pthread_mutex_unlock(&f->mtx);
+
+ pthread_cond_destroy(&f->cond);
+ pthread_mutex_destroy(&f->mtx);
+
+ shm_rbuff_destroy(f->n_rb);
+ shm_rbuff_destroy(f->n_1_rb);
+
+ free(f);
+}
+
+void reg_flow_destroy(struct reg_flow * f)
+{
+ assert(f);
+
+ pthread_mutex_lock(&f->mtx);
+
+ assert(f->data.len == 0);
+
+ if (f->state == FLOW_DESTROY) {
+ pthread_mutex_unlock(&f->mtx);
+ return;
+ }
+
+ if (f->state == FLOW_ALLOC_PENDING)
+ f->state = FLOW_DESTROY;
+ else
+ f->state = FLOW_NULL;
+
+ pthread_cond_broadcast(&f->cond);
+
+ pthread_cleanup_push(cancel_irm_destroy, f);
+
+ while (f->state != FLOW_NULL)
+ pthread_cond_wait(&f->cond, &f->mtx);
+
+ pthread_cleanup_pop(true);
+}
+
+enum flow_state reg_flow_get_state(struct reg_flow * f)
+{
+ enum flow_state state;
+
+ assert(f);
+
+ pthread_mutex_lock(&f->mtx);
+
+ state = f->state;
+
+ pthread_mutex_unlock(&f->mtx);
+
+ return state;
+}
+
+void reg_flow_set_state(struct reg_flow * f,
+ enum flow_state state)
+{
+ assert(f);
+ assert(state != FLOW_DESTROY);
+
+ pthread_mutex_lock(&f->mtx);
+
+ f->state = state;
+ pthread_cond_broadcast(&f->cond);
+
+ pthread_mutex_unlock(&f->mtx);
+}
+
+int reg_flow_wait_state(struct reg_flow * f,
+ enum flow_state state,
+ struct timespec * dl)
+{
+ int ret = 0;
+ int s;
+
+ assert(f);
+ assert(state != FLOW_NULL);
+ assert(state != FLOW_DESTROY);
+ assert(state != FLOW_DEALLOC_PENDING);
+
+ pthread_mutex_lock(&f->mtx);
+
+ assert(f->state != FLOW_NULL);
+
+ pthread_cleanup_push(__cleanup_mutex_unlock, &f->mtx);
+
+ while (!(f->state == state ||
+ f->state == FLOW_DESTROY ||
+ f->state == FLOW_DEALLOC_PENDING) &&
+ ret != -ETIMEDOUT) {
+ if (dl != NULL)
+ ret = -pthread_cond_timedwait(&f->cond,
+ &f->mtx,
+ dl);
+ else
+ ret = -pthread_cond_wait(&f->cond,
+ &f->mtx);
+ }
+
+ if (f->state == FLOW_DESTROY ||
+ f->state == FLOW_DEALLOC_PENDING ||
+ ret == -ETIMEDOUT) {
+ f->state = FLOW_NULL;
+ pthread_cond_broadcast(&f->cond);
+ }
+
+ s = f->state;
+
+ pthread_cleanup_pop(true);
+
+ return ret ? ret : s;
+}
diff --git a/src/irmd/reg/flow.h b/src/irmd/reg/flow.h
new file mode 100644
index 00000000..9af15032
--- /dev/null
+++ b/src/irmd/reg/flow.h
@@ -0,0 +1,83 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2023
+ *
+ * The IPC Resource Manager - Registry - Flows
+ *
+ * Dimitri Staessens <dimitri@ouroboros.rocks>
+ * Sander Vrijders <sander@ouroboros.rocks>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., http://www.fsf.org/about/contact/.
+ */
+
+#ifndef OUROBOROS_IRMD_REG_FLOW_H
+#define OUROBOROS_IRMD_REG_FLOW_H
+
+#include <ouroboros/list.h>
+#include <ouroboros/qos.h>
+#include <ouroboros/shm_rbuff.h>
+#include <ouroboros/utils.h>
+
+#include <sys/types.h>
+#include <pthread.h>
+#include <time.h>
+
+enum flow_state {
+ FLOW_NULL = 0,
+ FLOW_ALLOC_PENDING,
+ FLOW_ALLOC_REQ_PENDING,
+ FLOW_ALLOCATED,
+ FLOW_DEALLOC_PENDING,
+ FLOW_DESTROY
+};
+
+struct reg_flow {
+ struct list_head next;
+
+ int flow_id;
+
+ pid_t n_pid;
+ pid_t n_1_pid;
+
+ qosspec_t qs;
+ time_t mpl;
+ buffer_t data;
+
+ struct shm_rbuff * n_rb;
+ struct shm_rbuff * n_1_rb;
+
+ struct timespec t0;
+
+ enum flow_state state;
+ pthread_cond_t cond;
+ pthread_mutex_t mtx;
+};
+
+struct reg_flow * reg_flow_create(pid_t n_pid,
+ pid_t n_1_pid,
+ int flow_id,
+ qosspec_t qs);
+
+void reg_flow_destroy(struct reg_flow * f);
+
+enum flow_state reg_flow_get_state(struct reg_flow * f);
+
+
+void reg_flow_set_state(struct reg_flow * f,
+ enum flow_state state);
+
+int reg_flow_wait_state(struct reg_flow * f,
+ enum flow_state state,
+ struct timespec * timeo);
+
+#endif /* OUROBOROS_IRMD_REG_FLOW_H */
diff --git a/src/irmd/reg/ipcp.c b/src/irmd/reg/ipcp.c
new file mode 100644
index 00000000..62505871
--- /dev/null
+++ b/src/irmd/reg/ipcp.c
@@ -0,0 +1,152 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2023
+ *
+ * The IPC Resource Manager - Registry - IPCPs
+ *
+ * Dimitri Staessens <dimitri@ouroboros.rocks>
+ * Sander Vrijders <sander@ouroboros.rocks>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., http://www.fsf.org/about/contact/.
+ */
+
+#if defined(__linux__) || defined(__CYGWIN__)
+#define _DEFAULT_SOURCE
+#else
+#define _POSIX_C_SOURCE 200809L
+#endif
+
+#include "config.h"
+
+#include <ouroboros/errno.h>
+#include <ouroboros/hash.h>
+#include <ouroboros/ipcp.h>
+#include <ouroboros/pthread.h>
+#include <ouroboros/time_utils.h>
+
+#include "ipcp.h"
+
+#include <assert.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct reg_ipcp * reg_ipcp_create(const char * name,
+ enum ipcp_type type)
+{
+ struct reg_ipcp * ipcp;
+ pthread_condattr_t cattr;
+
+ ipcp = malloc(sizeof(*ipcp));
+ if (ipcp == NULL)
+ goto fail_malloc;
+
+ if (pthread_mutex_init(&ipcp->mtx, NULL))
+ goto fail_mutex;
+
+ if (pthread_condattr_init(&cattr))
+ goto fail_cattr;
+#ifndef __APPLE__
+ pthread_condattr_setclock(&cattr, PTHREAD_COND_CLOCK);
+#endif
+ if (pthread_cond_init(&ipcp->cond, &cattr))
+ goto fail_cond;
+
+ ipcp->name = strdup(name);
+ if (ipcp->name == NULL)
+ goto fail_name;
+
+ pthread_condattr_destroy(&cattr);
+
+ ipcp->layer = NULL;
+ ipcp->type = type;
+ ipcp->state = IPCP_BOOT;
+
+ list_head_init(&ipcp->next);
+
+ return ipcp;
+
+ fail_name:
+ pthread_cond_destroy(&ipcp->cond);
+ fail_cond:
+ pthread_condattr_destroy(&cattr);
+ fail_cattr:
+ pthread_mutex_destroy(&ipcp->mtx);
+ fail_mutex:
+ free(ipcp);
+ fail_malloc:
+ return NULL;
+}
+
+void reg_ipcp_destroy(struct reg_ipcp * ipcp)
+{
+ assert(ipcp);
+
+ pthread_mutex_lock(&ipcp->mtx);
+
+ while (ipcp->state == IPCP_BOOT)
+ pthread_cond_wait(&ipcp->cond, &ipcp->mtx);
+
+ free(ipcp->layer);
+ free(ipcp->name);
+
+ pthread_mutex_unlock(&ipcp->mtx);
+
+ pthread_cond_destroy(&ipcp->cond);
+ pthread_mutex_destroy(&ipcp->mtx);
+
+ free(ipcp);
+}
+
+void reg_ipcp_set_state(struct reg_ipcp * ipcp,
+ enum ipcp_state state)
+{
+ pthread_mutex_lock(&ipcp->mtx);
+
+ ipcp->state = state;
+ pthread_cond_broadcast(&ipcp->cond);
+
+ pthread_mutex_unlock(&ipcp->mtx);
+}
+
+int reg_ipcp_wait_boot(struct reg_ipcp * ipcp)
+{
+ int ret = 0;
+ struct timespec dl;
+ struct timespec to = {SOCKET_TIMEOUT / 1000,
+ (SOCKET_TIMEOUT % 1000) * MILLION};
+
+ clock_gettime(PTHREAD_COND_CLOCK, &dl);
+ ts_add(&dl, &to, &dl);
+
+ pthread_mutex_lock(&ipcp->mtx);
+
+ while (ipcp->state == IPCP_BOOT && ret != ETIMEDOUT)
+ ret = pthread_cond_timedwait(&ipcp->cond, &ipcp->mtx, &dl);
+
+ if (ret == ETIMEDOUT) {
+ kill(ipcp->pid, SIGTERM);
+ ipcp->state = IPCP_NULL;
+ pthread_cond_signal(&ipcp->cond);
+ }
+
+ if (ipcp->state != IPCP_LIVE) {
+ pthread_mutex_unlock(&ipcp->mtx);
+ return -1;
+ }
+
+ pthread_mutex_unlock(&ipcp->mtx);
+
+ return 0;
+}
diff --git a/src/irmd/reg/ipcp.h b/src/irmd/reg/ipcp.h
new file mode 100644
index 00000000..8ad334cf
--- /dev/null
+++ b/src/irmd/reg/ipcp.h
@@ -0,0 +1,58 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2023
+ *
+ * The IPC Resource Manager - Registry - IPCPs
+ *
+ * Dimitri Staessens <dimitri@ouroboros.rocks>
+ * Sander Vrijders <sander@ouroboros.rocks>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., http://www.fsf.org/about/contact/.
+ */
+
+#ifndef OUROBOROS_IRMD_REG_IPCP_H
+#define OUROBOROS_IRMD_REG_IPCP_H
+
+#include <ouroboros/list.h>
+
+enum ipcp_state {
+ IPCP_NULL = 0,
+ IPCP_BOOT,
+ IPCP_LIVE
+};
+
+struct reg_ipcp {
+ struct list_head next;
+
+ char * name;
+ pid_t pid;
+ enum ipcp_type type;
+ enum hash_algo dir_hash_algo;
+ char * layer;
+
+ enum ipcp_state state;
+ pthread_cond_t cond;
+ pthread_mutex_t mtx;
+};
+
+struct reg_ipcp * reg_ipcp_create(const char * name,
+ enum ipcp_type type);
+
+void reg_ipcp_destroy(struct reg_ipcp * i);
+
+void reg_ipcp_set_state(struct reg_ipcp * i,
+ enum ipcp_state state);
+
+int reg_ipcp_wait_boot(struct reg_ipcp * i);
+
+#endif /* OUROBOROS_IRMD_REG_IPCP_H */ \ No newline at end of file
diff --git a/src/irmd/reg/name.c b/src/irmd/reg/name.c
new file mode 100644
index 00000000..7e13e888
--- /dev/null
+++ b/src/irmd/reg/name.c
@@ -0,0 +1,451 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2023
+ *
+ * The IPC Resource Manager - Registry - Names
+ *
+ * Dimitri Staessens <dimitri@ouroboros.rocks>
+ * Sander Vrijders <sander@ouroboros.rocks>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., http://www.fsf.org/about/contact/.
+ */
+
+#if defined(__linux__) || defined(__CYGWIN__)
+#define _DEFAULT_SOURCE
+#else
+#define _POSIX_C_SOURCE 200809L
+#endif
+
+#include "config.h"
+
+#define OUROBOROS_PREFIX "reg_name"
+
+#include <ouroboros/errno.h>
+#include <ouroboros/logs.h>
+#include <ouroboros/time_utils.h>
+#include <ouroboros/pthread.h>
+
+#include "name.h"
+#include "utils.h"
+
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <signal.h>
+#include <unistd.h>
+#include <limits.h>
+#include <assert.h>
+
+struct reg_name * reg_name_create(const char * name,
+ enum pol_balance lb)
+{
+ pthread_condattr_t cattr;
+ struct reg_name * n;
+
+ assert(name != NULL);
+
+ n = malloc(sizeof(*n));
+ if (n == NULL)
+ goto fail_malloc;
+
+ if (pthread_condattr_init(&cattr))
+ goto fail_cattr;
+
+#ifndef __APPLE__
+ pthread_condattr_setclock(&cattr, PTHREAD_COND_CLOCK);
+#endif
+ if (pthread_cond_init(&n->cond, &cattr))
+ goto fail_cond;
+
+ if (pthread_mutex_init(&n->mtx, NULL))
+ goto fail_mutex;
+
+ n->name = strdup(name);
+ if (n->name == NULL)
+ goto fail_name;
+
+ pthread_condattr_destroy(&cattr);
+
+ list_head_init(&n->next);
+ list_head_init(&n->reg_progs);
+ list_head_init(&n->reg_pids);
+
+ n->pol_lb = lb;
+ n->state = NAME_IDLE;
+
+ return n;
+
+ fail_name:
+ pthread_mutex_destroy(&n->mtx);
+ fail_mutex:
+ pthread_cond_destroy(&n->cond);
+ fail_cond:
+ pthread_condattr_destroy(&cattr);
+ fail_cattr:
+ free(n);
+ fail_malloc:
+ return NULL;
+}
+
+static void cancel_reg_name_destroy(void * o)
+{
+ struct reg_name * name;
+ struct list_head * p;
+ struct list_head * h;
+
+ name = (struct reg_name *) o;
+
+ pthread_mutex_unlock(&name->mtx);
+
+ pthread_cond_destroy(&name->cond);
+ pthread_mutex_destroy(&name->mtx);
+
+ if (name->name != NULL)
+ free(name->name);
+
+ list_for_each_safe(p, h, &name->reg_pids) {
+ struct pid_el * pe = list_entry(p, struct pid_el, next);
+ list_del(&pe->next);
+ free(pe);
+ }
+
+ list_for_each_safe(p, h, &name->reg_progs) {
+ struct str_el * se = list_entry(p, struct str_el, next);
+ list_del(&se->next);
+ free(se->str);
+ free(se);
+ }
+
+ free(name);
+}
+
+void reg_name_destroy(struct reg_name * name)
+{
+ if (name == NULL)
+ return;
+
+ pthread_mutex_lock(&name->mtx);
+
+ if (name->state == NAME_DESTROY) {
+ pthread_mutex_unlock(&name->mtx);
+ return;
+ }
+
+ if (name->state != NAME_FLOW_ACCEPT)
+ name->state = NAME_NULL;
+ else
+ name->state = NAME_DESTROY;
+
+ pthread_cond_broadcast(&name->cond);
+
+ pthread_cleanup_push(cancel_reg_name_destroy, name);
+
+ while (name->state != NAME_NULL)
+ pthread_cond_wait(&name->cond, &name->mtx);
+
+ pthread_cleanup_pop(true);
+}
+
+static bool reg_name_has_prog(struct reg_name * name,
+ const char * prog)
+{
+ struct list_head * p;
+
+ list_for_each(p, &name->reg_progs) {
+ struct str_el * name = list_entry(p, struct str_el, next);
+ if (!strcmp(name->str, prog))
+ return true;
+ }
+
+ return false;
+}
+
+int reg_name_add_prog(struct reg_name * name,
+ struct reg_prog * a)
+{
+ struct str_el * n;
+
+ if (reg_name_has_prog(name, a->prog)) {
+ log_warn("Program %s already accepting flows for %s.",
+ a->prog, name->name);
+ return 0;
+ }
+
+ if (!(a->flags & BIND_AUTO)) {
+ log_dbg("Program %s cannot be auto-instantiated.", a->prog);
+ return 0;
+ }
+
+ n = malloc(sizeof(*n));
+ if (n == NULL)
+ return -ENOMEM;
+
+ n->str = strdup(a->prog);
+ if (n->str == NULL) {
+ free(n);
+ return -ENOMEM;
+ }
+
+ list_add(&n->next, &name->reg_progs);
+
+ pthread_mutex_lock(&name->mtx);
+
+ if (name->state == NAME_IDLE)
+ name->state = NAME_AUTO_ACCEPT;
+
+ pthread_mutex_unlock(&name->mtx);
+
+ return 0;
+}
+
+void reg_name_del_prog(struct reg_name * name,
+ const char * prog)
+{
+ struct list_head * p;
+ struct list_head * h;
+
+ list_for_each_safe(p, h, &name->reg_progs) {
+ struct str_el * se = list_entry(p, struct str_el, next);
+ if (strcmp(prog, se->str) == 0) {
+ list_del(&se->next);
+ free(se->str);
+ free(se);
+ }
+ }
+
+ pthread_mutex_lock(&name->mtx);
+
+ if (name->state == NAME_AUTO_ACCEPT && list_is_empty(&name->reg_progs)) {
+ name->state = NAME_IDLE;
+ pthread_cond_broadcast(&name->cond);
+ }
+
+ pthread_mutex_unlock(&name->mtx);
+}
+
+char * reg_name_get_prog(struct reg_name * name)
+{
+ if (!list_is_empty(&name->reg_pids) || list_is_empty(&name->reg_progs))
+ return NULL;
+
+ return list_first_entry(&name->reg_progs, struct str_el, next)->str;
+}
+
+static bool reg_name_has_pid(struct reg_name * name,
+ pid_t pid)
+{
+ struct list_head * p;
+
+ list_for_each(p, &name->reg_progs) {
+ struct pid_el * name = list_entry(p, struct pid_el, next);
+ if (name->pid == pid)
+ return true;
+ }
+
+ return false;
+}
+
+int reg_name_add_pid(struct reg_name * name,
+ pid_t pid)
+{
+ struct pid_el * i;
+
+ assert(name);
+
+ if (reg_name_has_pid(name, pid)) {
+ log_dbg("Process already registered with this name.");
+ return -EPERM;
+ }
+
+ pthread_mutex_lock(&name->mtx);
+
+ if (name->state == NAME_NULL) {
+ pthread_mutex_unlock(&name->mtx);
+ log_dbg("Tried to add instance in NULL state.");
+ return -EPERM;
+ }
+
+ i = malloc(sizeof(*i));
+ if (i == NULL) {
+ pthread_mutex_unlock(&name->mtx);
+ return -ENOMEM;
+ }
+
+ i->pid = pid;
+
+ /* load balancing policy assigns queue order for this process. */
+ switch(name->pol_lb) {
+ case LB_RR: /* Round robin policy. */
+ list_add_tail(&i->next, &name->reg_pids);
+ break;
+ case LB_SPILL: /* Keep accepting flows on the current process */
+ list_add(&i->next, &name->reg_pids);
+ break;
+ default:
+ free(i);
+ assert(false);
+ };
+
+ if (name->state == NAME_IDLE ||
+ name->state == NAME_AUTO_ACCEPT ||
+ name->state == NAME_AUTO_EXEC) {
+ name->state = NAME_FLOW_ACCEPT;
+ pthread_cond_broadcast(&name->cond);
+ }
+
+ pthread_mutex_unlock(&name->mtx);
+
+ return 0;
+}
+
+void reg_name_set_policy(struct reg_name * name,
+ enum pol_balance lb)
+{
+ name->pol_lb = lb;
+}
+
+static void reg_name_check_state(struct reg_name * name)
+{
+ assert(name);
+
+ if (name->state == NAME_DESTROY) {
+ name->state = NAME_NULL;
+ pthread_cond_broadcast(&name->cond);
+ return;
+ }
+
+ if (list_is_empty(&name->reg_pids)) {
+ if (!list_is_empty(&name->reg_progs))
+ name->state = NAME_AUTO_ACCEPT;
+ else
+ name->state = NAME_IDLE;
+ } else {
+ name->state = NAME_FLOW_ACCEPT;
+ }
+
+ pthread_cond_broadcast(&name->cond);
+}
+
+void reg_name_del_pid_el(struct reg_name * name,
+ struct pid_el * p)
+{
+ assert(name);
+ assert(p);
+
+ list_del(&p->next);
+ free(p);
+
+ reg_name_check_state(name);
+}
+
+void reg_name_del_pid(struct reg_name * name,
+ pid_t pid)
+{
+ struct list_head * p;
+ struct list_head * h;
+
+ assert(name);
+
+ if (name == NULL)
+ return;
+
+ list_for_each_safe(p, h, &name->reg_pids) {
+ struct pid_el * a = list_entry(p, struct pid_el, next);
+ if (a->pid == pid) {
+ list_del(&a->next);
+ free(a);
+ }
+ }
+
+ reg_name_check_state(name);
+}
+
+pid_t reg_name_get_pid(struct reg_name * name)
+{
+ if (name == NULL)
+ return -1;
+
+ if (list_is_empty(&name->reg_pids))
+ return -1;
+
+ return list_first_entry(&name->reg_pids, struct pid_el, next)->pid;
+}
+
+enum name_state reg_name_get_state(struct reg_name * name)
+{
+ enum name_state state;
+
+ assert(name);
+
+ pthread_mutex_lock(&name->mtx);
+
+ state = name->state;
+
+ pthread_mutex_unlock(&name->mtx);
+
+ return state;
+}
+
+int reg_name_set_state(struct reg_name * name,
+ enum name_state state)
+{
+ assert(state != NAME_DESTROY);
+
+ pthread_mutex_lock(&name->mtx);
+
+ name->state = state;
+ pthread_cond_broadcast(&name->cond);
+
+ pthread_mutex_unlock(&name->mtx);
+
+ return 0;
+}
+
+int reg_name_leave_state(struct reg_name * name,
+ enum name_state state,
+ struct timespec * timeout)
+{
+ struct timespec abstime;
+ int ret = 0;
+
+ assert(name);
+ assert(state != NAME_DESTROY);
+
+ if (timeout != NULL) {
+ clock_gettime(PTHREAD_COND_CLOCK, &abstime);
+ ts_add(&abstime, timeout, &abstime);
+ }
+
+ pthread_mutex_lock(&name->mtx);
+
+ pthread_cleanup_push(__cleanup_mutex_unlock, &name->mtx);
+
+ while (name->state == state && ret != -ETIMEDOUT)
+ if (timeout)
+ ret = -pthread_cond_timedwait(&name->cond,
+ &name->mtx,
+ &abstime);
+ else
+ ret = -pthread_cond_wait(&name->cond,
+ &name->mtx);
+
+ if (name->state == NAME_DESTROY) {
+ ret = -1;
+ name->state = NAME_NULL;
+ pthread_cond_broadcast(&name->cond);
+ }
+
+ pthread_cleanup_pop(true);
+
+ return ret;
+}
diff --git a/src/irmd/reg/name.h b/src/irmd/reg/name.h
new file mode 100644
index 00000000..0731782c
--- /dev/null
+++ b/src/irmd/reg/name.h
@@ -0,0 +1,103 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2023
+ *
+ * The IPC Resource Manager - Registry - Names
+ *
+ * Dimitri Staessens <dimitri@ouroboros.rocks>
+ * Sander Vrijders <sander@ouroboros.rocks>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., http://www.fsf.org/about/contact/.
+ */
+
+#ifndef OUROBOROS_IRMD_REG_NAME_H
+#define OUROBOROS_IRMD_REG_NAME_H
+
+#include <ouroboros/hash.h>
+#include <ouroboros/ipcp.h>
+#include <ouroboros/list.h>
+#include <ouroboros/irm.h>
+
+#include "proc.h"
+#include "prog.h"
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <pthread.h>
+#include <string.h>
+#include <sys/types.h>
+
+enum name_state {
+ NAME_NULL = 0,
+ NAME_IDLE,
+ NAME_AUTO_ACCEPT,
+ NAME_AUTO_EXEC,
+ NAME_FLOW_ACCEPT,
+ NAME_FLOW_ARRIVED,
+ NAME_DESTROY
+};
+
+/* An entry in the registry */
+struct reg_name {
+ struct list_head next;
+ char * name;
+
+ /* Policies for this name. */
+ enum pol_balance pol_lb; /* Load balance incoming flows. */
+ /* Programs that can be instantiated by the irmd. */
+ struct list_head reg_progs;
+ /* Processes that are listening for this name. */
+ struct list_head reg_pids;
+
+ enum name_state state;
+ pthread_cond_t cond;
+ pthread_mutex_t mtx;
+};
+
+struct reg_name * reg_name_create(const char * name,
+ enum pol_balance lb);
+
+void reg_name_destroy(struct reg_name * n);
+
+int reg_name_add_prog(struct reg_name * n,
+ struct reg_prog * p);
+
+void reg_name_del_prog(struct reg_name * n,
+ const char * prog);
+
+char * reg_name_get_prog(struct reg_name * n);
+
+int reg_name_add_pid(struct reg_name * n,
+ pid_t pid);
+
+void reg_name_del_pid(struct reg_name * n,
+ pid_t pid);
+
+void reg_name_del_pid_el(struct reg_name * n,
+ struct pid_el * p);
+
+pid_t reg_name_get_pid(struct reg_name * n);
+
+void reg_name_set_policy(struct reg_name * n,
+ enum pol_balance lb);
+
+enum name_state reg_name_get_state(struct reg_name * n);
+
+int reg_name_set_state(struct reg_name * n,
+ enum name_state state);
+
+int reg_name_leave_state(struct reg_name * n,
+ enum name_state state,
+ struct timespec * timeout);
+
+#endif /* OUROBOROS_IRMD_REG_NAME_H */
diff --git a/src/irmd/reg/proc.c b/src/irmd/reg/proc.c
new file mode 100644
index 00000000..1aae789d
--- /dev/null
+++ b/src/irmd/reg/proc.c
@@ -0,0 +1,265 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2023
+ *
+ * The IPC Resource Manager - Registry - Processes
+ *
+ * Dimitri Staessens <dimitri@ouroboros.rocks>
+ * Sander Vrijders <sander@ouroboros.rocks>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., http://www.fsf.org/about/contact/.
+ */
+
+#if defined(__linux__) || defined(__CYGWIN__)
+#define _DEFAULT_SOURCE
+#else
+#define _POSIX_C_SOURCE 200112L
+#endif
+
+#include "config.h"
+
+#include <ouroboros/list.h>
+#include <ouroboros/errno.h>
+#include <ouroboros/time_utils.h>
+
+#include "proc.h"
+#include "name.h"
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <limits.h>
+#include <assert.h>
+
+struct reg_proc * reg_proc_create(pid_t pid,
+ const char * prog)
+{
+ struct reg_proc * proc;
+ pthread_condattr_t cattr;
+
+ assert(prog);
+
+ proc = malloc(sizeof(*proc));
+ if (proc == NULL)
+ goto fail_malloc;
+
+ if (pthread_condattr_init(&cattr))
+ goto fail_condattr;
+
+#ifndef __APPLE__
+ pthread_condattr_setclock(&cattr, PTHREAD_COND_CLOCK);
+#endif
+
+ if (pthread_mutex_init(&proc->lock, NULL))
+ goto fail_mutex;
+
+ if (pthread_cond_init(&proc->cond, &cattr))
+ goto fail_cond;
+
+ proc->set = shm_flow_set_create(pid);
+ if (proc->set == NULL)
+ goto fail_set;
+
+ proc->prog = strdup(prog);
+ if(proc->prog == NULL)
+ goto fail_prog;
+
+ list_head_init(&proc->next);
+ list_head_init(&proc->names);
+
+ proc->pid = pid;
+ proc->name = NULL;
+ proc->state = PROC_INIT;
+
+ return proc;
+
+ fail_prog:
+ shm_flow_set_destroy(proc->set);
+ fail_set:
+ pthread_cond_destroy(&proc->cond);;
+ fail_cond:
+ pthread_mutex_destroy(&proc->lock);
+ fail_mutex:
+ pthread_condattr_destroy(&cattr);
+ fail_condattr:
+ free(proc);
+ fail_malloc:
+ return NULL;
+}
+
+static void cancel_reg_proc(void * o)
+{
+ struct reg_proc * proc = (struct reg_proc *) o;
+
+ proc->state = PROC_NULL;
+
+ pthread_mutex_unlock(&proc->lock);
+}
+
+void reg_proc_destroy(struct reg_proc * proc)
+{
+ struct list_head * p;
+ struct list_head * h;
+
+ assert(proc);
+
+ pthread_mutex_lock(&proc->lock);
+
+ if (proc->state == PROC_DESTROY) {
+ pthread_mutex_unlock(&proc->lock);
+ return;
+ }
+
+ if (proc->state == PROC_SLEEP)
+ proc->state = PROC_DESTROY;
+
+ pthread_cond_signal(&proc->cond);
+
+ pthread_cleanup_push(cancel_reg_proc, proc);
+
+ while (proc->state != PROC_INIT)
+ pthread_cond_wait(&proc->cond, &proc->lock);
+
+ pthread_cleanup_pop(false);
+
+ pthread_mutex_unlock(&proc->lock);
+
+ shm_flow_set_destroy(proc->set);
+
+ pthread_cond_destroy(&proc->cond);
+ pthread_mutex_destroy(&proc->lock);
+
+ list_for_each_safe(p, h, &proc->names) {
+ struct str_el * n = list_entry(p, struct str_el, next);
+ list_del(&n->next);
+ if (n->str != NULL)
+ free(n->str);
+ free(n);
+ }
+
+ free(proc->prog);
+ free(proc);
+}
+
+int reg_proc_add_name(struct reg_proc * proc,
+ const char * name)
+{
+ struct str_el * s;
+
+ assert(proc);
+ assert(name);
+
+ s = malloc(sizeof(*s));
+ if (s == NULL)
+ goto fail_malloc;
+
+ s->str = strdup(name);
+ if (s->str == NULL)
+ goto fail_name;
+
+ list_add(&s->next, &proc->names);
+
+ return 0;
+
+ fail_name:
+ free(s);
+ fail_malloc:
+ return -ENOMEM;
+}
+
+void reg_proc_del_name(struct reg_proc * proc,
+ const char * name)
+{
+ struct list_head * p = NULL;
+ struct list_head * h = NULL;
+
+ assert(proc);
+ assert(name);
+
+ list_for_each_safe(p, h, &proc->names) {
+ struct str_el * s = list_entry(p, struct str_el, next);
+ if (!strcmp(name, s->str)) {
+ list_del(&s->next);
+ free(s->str);
+ free(s);
+ }
+ }
+}
+
+int reg_proc_sleep(struct reg_proc * proc,
+ struct timespec * dl)
+{
+
+ int ret = 0;
+
+ assert(proc);
+
+ pthread_mutex_lock(&proc->lock);
+
+ if (proc->state != PROC_WAKE && proc->state != PROC_DESTROY)
+ proc->state = PROC_SLEEP;
+
+ pthread_cleanup_push(cancel_reg_proc, proc);
+
+ while (proc->state == PROC_SLEEP && ret != -ETIMEDOUT)
+ if (dl != NULL)
+ ret = -pthread_cond_timedwait(&proc->cond,
+ &proc->lock, dl);
+ else
+ ret = -pthread_cond_wait(&proc->cond, &proc->lock);
+
+ pthread_cleanup_pop(false);
+
+ if (proc->state == PROC_DESTROY) {
+ if (proc->name != NULL)
+ reg_name_del_pid(proc->name, proc->pid);
+ ret = -1;
+ }
+
+ proc->state = PROC_INIT;
+
+ pthread_cond_broadcast(&proc->cond);
+ pthread_mutex_unlock(&proc->lock);
+
+ return ret;
+}
+
+void reg_proc_wake(struct reg_proc * proc,
+ struct reg_name * name)
+{
+ assert(proc);
+ assert(name);
+
+ pthread_mutex_lock(&proc->lock);
+
+ if (proc->state != PROC_SLEEP) {
+ pthread_mutex_unlock(&proc->lock);
+ return;
+ }
+
+ proc->state = PROC_WAKE;
+ proc->name = name;
+
+ pthread_cond_broadcast(&proc->cond);
+
+ pthread_cleanup_push(cancel_reg_proc, proc);
+
+ while (proc->state == PROC_WAKE)
+ pthread_cond_wait(&proc->cond, &proc->lock);
+
+ pthread_cleanup_pop(false);
+
+ if (proc->state == PROC_DESTROY)
+ proc->state = PROC_INIT;
+
+ pthread_mutex_unlock(&proc->lock);
+}
diff --git a/src/irmd/reg/proc.h b/src/irmd/reg/proc.h
new file mode 100644
index 00000000..fb11f34f
--- /dev/null
+++ b/src/irmd/reg/proc.h
@@ -0,0 +1,75 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2023
+ *
+ * The IPC Resource Manager - Registry - Processes
+ *
+ * Dimitri Staessens <dimitri@ouroboros.rocks>
+ * Sander Vrijders <sander@ouroboros.rocks>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., http://www.fsf.org/about/contact/.
+ */
+
+#ifndef OUROBOROS_IRMD_REG_PROC_H
+#define OUROBOROS_IRMD_REG_PROC_H
+
+#include <ouroboros/shm_flow_set.h>
+
+#include "utils.h"
+
+#include <unistd.h>
+#include <pthread.h>
+
+enum proc_state {
+ PROC_NULL = 0,
+ PROC_INIT,
+ PROC_SLEEP,
+ PROC_WAKE,
+ PROC_DESTROY
+};
+
+struct reg_proc {
+ struct list_head next;
+ pid_t pid;
+ char * prog; /* program instantiated */
+ struct list_head names; /* names for which process accepts flows */
+ struct shm_flow_set * set;
+
+ struct reg_name * name; /* name for which a flow arrived */
+
+ /* The process will block on this */
+ enum proc_state state;
+ pthread_cond_t cond;
+ pthread_mutex_t lock;
+};
+
+struct reg_proc * reg_proc_create(pid_t proc,
+ const char * prog);
+
+void reg_proc_destroy(struct reg_proc * proc);
+
+int reg_proc_sleep(struct reg_proc * proc,
+ struct timespec * timeo);
+
+void reg_proc_wake(struct reg_proc * proc,
+ struct reg_name * name);
+
+void reg_proc_cancel(struct reg_proc * proc);
+
+int reg_proc_add_name(struct reg_proc * proc,
+ const char * name);
+
+void reg_proc_del_name(struct reg_proc * proc,
+ const char * name);
+
+#endif /* OUROBOROS_IRMD_REG_PROC_H */
diff --git a/src/irmd/reg/prog.c b/src/irmd/reg/prog.c
new file mode 100644
index 00000000..e3fd6105
--- /dev/null
+++ b/src/irmd/reg/prog.c
@@ -0,0 +1,174 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2023
+ *
+ * The IPC Resource Manager - Registry - Programs
+ *
+ * Dimitri Staessens <dimitri@ouroboros.rocks>
+ * Sander Vrijders <sander@ouroboros.rocks>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., http://www.fsf.org/about/contact/.
+ */
+
+#if defined(__linux__) || defined(__CYGWIN__)
+#define _DEFAULT_SOURCE
+#else
+#define _POSIX_C_SOURCE 200809L
+#endif
+
+#include <ouroboros/errno.h>
+#include <ouroboros/irm.h>
+#include <ouroboros/utils.h>
+
+#include "prog.h"
+#include "utils.h"
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+static char ** create_argv(const char * prog,
+ size_t argc,
+ char ** argv)
+{
+ char ** argv2;
+ size_t i;
+
+ argv2 = malloc((argc + 2) * sizeof(*argv2)); /* prog + args + NULL */
+ if (argv2 == 0)
+ goto fail_malloc;
+
+ argv2[0] = strdup(prog);
+ if (argv2[0] == NULL)
+ goto fail_prog;
+
+ for (i = 1; i <= argc; ++i) {
+ argv2[i] = strdup(argv[i - 1]);
+ if (argv2[i] == NULL)
+ goto fail_arg;
+ }
+
+ argv2[argc + 1] = NULL;
+
+ return argv2;
+
+ fail_arg:
+ argvfree(argv2);
+ fail_prog:
+ free(argv2);
+ fail_malloc:
+ return NULL;
+}
+
+struct reg_prog * reg_prog_create(const char * prog,
+ uint32_t flags,
+ int argc,
+ char ** argv)
+{
+ struct reg_prog * p;
+
+ assert(prog);
+
+ p = malloc(sizeof(*p));
+ if (p == NULL)
+ goto fail_malloc;
+
+ memset(p, 0, sizeof(*p));
+
+ p->prog = strdup(path_strip(prog));
+ if (p->prog == NULL)
+ goto fail_prog;
+
+ if (argc > 0 && flags & BIND_AUTO) {
+ p->argv = create_argv(prog, argc, argv);
+ if (p->argv == NULL)
+ goto fail_argv;
+ }
+
+ list_head_init(&p->next);
+ list_head_init(&p->names);
+
+ p->flags = flags;
+
+ return p;
+
+ fail_argv:
+ free(p->prog);
+ fail_prog:
+ free(p);
+ fail_malloc:
+ return NULL;
+}
+
+void reg_prog_destroy(struct reg_prog * prog)
+{
+ struct list_head * p;
+ struct list_head * h;
+
+ if (prog == NULL)
+ return;
+
+ list_for_each_safe(p, h, &prog->names) {
+ struct str_el * s = list_entry(p, struct str_el, next);
+ list_del(&s->next);
+ free(s->str);
+ free(s);
+ }
+
+ argvfree(prog->argv);
+ free(prog->prog);
+ free(prog);
+}
+
+int reg_prog_add_name(struct reg_prog * prog,
+ const char * name)
+{
+ struct str_el * s;
+
+ if (prog == NULL || name == NULL)
+ return -EINVAL;
+
+ s = malloc(sizeof(*s));
+ if (s == NULL)
+ goto fail_malloc;
+
+ s->str = strdup(name);
+ if(s->str == NULL)
+ goto fail_name;
+
+ list_add(&s->next, &prog->names);
+
+ return 0;
+
+ fail_name:
+ free(s);
+ fail_malloc:
+ return -ENOMEM;
+}
+
+void reg_prog_del_name(struct reg_prog * prog,
+ const char * name)
+{
+ struct list_head * p;
+ struct list_head * h;
+
+ list_for_each_safe(p, h, &prog->names) {
+ struct str_el * s = list_entry(p, struct str_el, next);
+ if (!strcmp(name, s->str)) {
+ list_del(&s->next);
+ free(s->str);
+ free(s);
+ }
+ }
+}
diff --git a/src/irmd/reg/prog.h b/src/irmd/reg/prog.h
new file mode 100644
index 00000000..c45f2d8c
--- /dev/null
+++ b/src/irmd/reg/prog.h
@@ -0,0 +1,52 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2023
+ *
+ * The IPC Resource Manager - Registry - Programs
+ *
+ * Dimitri Staessens <dimitri@ouroboros.rocks>
+ * Sander Vrijders <sander@ouroboros.rocks>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., http://www.fsf.org/about/contact/.
+ */
+
+#ifndef OUROBOROS_IRMD_REG_PROG_H
+#define OUROBOROS_IRMD_REG_PROG_H
+
+#include <ouroboros/list.h>
+
+#include <unistd.h>
+#include <stdint.h>
+
+struct reg_prog {
+ struct list_head next;
+ char * prog; /* name of binary */
+ uint32_t flags;
+ char ** argv;
+ struct list_head names; /* names that all instances will listen for */
+};
+
+struct reg_prog * reg_prog_create(const char * prog,
+ uint32_t flags,
+ int argc,
+ char ** argv);
+
+void reg_prog_destroy(struct reg_prog * prog);
+
+int reg_prog_add_name(struct reg_prog * prog,
+ const char * name);
+
+void reg_prog_del_name(struct reg_prog * prog,
+ const char * name);
+
+#endif /* OUROBOROS_IRMD_REG_PROG_H */
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