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authordimitri staessens <dimitri.staessens@intec.ugent.be>2016-06-20 23:49:35 +0200
committerdimitri staessens <dimitri.staessens@intec.ugent.be>2016-06-21 00:14:14 +0200
commita46114ec01e8d174a41744f4f1b49905613847dc (patch)
tree9a76d884afc10c276c0b4e3af989d68a9556551b /src/ipcpd/local/main.c
parent34f96731f5fb8ab8a1f7018366fc28fd041d73e2 (diff)
downloadouroboros-a46114ec01e8d174a41744f4f1b49905613847dc.tar.gz
ouroboros-a46114ec01e8d174a41744f4f1b49905613847dc.zip
lib, irmd, ipcp: robust mutexes
Update to POSIX 200112L to allow use of robust mutexes in the shm_du_map. Removed the implementation of the rw_lock in favor of pthread_rwlock_t. Placeholder for the shm_du_map_sanitize function.
Diffstat (limited to 'src/ipcpd/local/main.c')
-rw-r--r--src/ipcpd/local/main.c121
1 files changed, 60 insertions, 61 deletions
diff --git a/src/ipcpd/local/main.c b/src/ipcpd/local/main.c
index 43ca14da..1e033a21 100644
--- a/src/ipcpd/local/main.c
+++ b/src/ipcpd/local/main.c
@@ -33,7 +33,6 @@
#include <ouroboros/bitmap.h>
#include <ouroboros/flow.h>
#include <ouroboros/dev.h>
-#include <ouroboros/rw_lock.h>
#define OUROBOROS_PREFIX "ipcpd/local"
@@ -76,7 +75,7 @@ struct shim_ap_data {
int in_out[AP_MAX_FLOWS];
struct flow flows[AP_MAX_FLOWS];
- rw_lock_t flows_lock;
+ pthread_rwlock_t flows_lock;
pthread_t mainloop;
pthread_t sduloop;
@@ -137,7 +136,7 @@ static int shim_ap_init(char * ap_name)
_ap_instance->in_out[i] = -1;
}
- rw_lock_init(&_ap_instance->flows_lock);
+ pthread_rwlock_init(&_ap_instance->flows_lock, NULL);
return 0;
}
@@ -149,7 +148,7 @@ void shim_ap_fini()
if (_ap_instance == NULL)
return;
- rw_lock_wrlock(&_ipcp->state_lock);
+ pthread_rwlock_wrlock(&_ipcp->state_lock);
if (_ipcp->state != IPCP_SHUTDOWN)
LOG_WARN("Cleaning up AP while not in shutdown.");
@@ -163,14 +162,14 @@ void shim_ap_fini()
if (_ap_instance->rb != NULL)
shm_ap_rbuff_destroy(_ap_instance->rb);
- rw_lock_wrlock(&_ap_instance->flows_lock);
+ pthread_rwlock_wrlock(&_ap_instance->flows_lock);
for (i = 0; i < AP_MAX_FLOWS; i ++)
if (_ap_instance->flows[i].rb != NULL)
shm_ap_rbuff_close(_ap_instance->flows[i].rb);
- rw_lock_unlock(&_ap_instance->flows_lock);
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ap_instance->flows_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
free(_ap_instance);
}
@@ -206,18 +205,18 @@ static void * ipcp_local_sdu_loop(void * o)
continue;
}
- rw_lock_rdlock(&_ipcp->state_lock);
+ pthread_rwlock_rdlock(&_ipcp->state_lock);
if (_ipcp->state != IPCP_ENROLLED) {
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
return (void *) 1; /* -ENOTENROLLED */
}
- rw_lock_rdlock(&_ap_instance->flows_lock);
+ pthread_rwlock_rdlock(&_ap_instance->flows_lock);
fd = _ap_instance->in_out[port_id_to_fd(e->port_id)];
if (fd == -1) {
- rw_lock_unlock(&_ap_instance->flows_lock);
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ap_instance->flows_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
free(e);
continue;
}
@@ -226,8 +225,8 @@ static void * ipcp_local_sdu_loop(void * o)
while (shm_ap_rbuff_write(_ap_instance->flows[fd].rb, e) < 0)
;
- rw_lock_unlock(&_ap_instance->flows_lock);
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ap_instance->flows_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
}
return (void *) 1;
@@ -249,14 +248,14 @@ void ipcp_sig_handler(int sig, siginfo_t * info, void * c)
LOG_DBG("Terminating by order of %d. Bye.",
info->si_pid);
- rw_lock_wrlock(&_ipcp->state_lock);
+ pthread_rwlock_wrlock(&_ipcp->state_lock);
if (_ipcp->state == IPCP_ENROLLED)
clean_threads = true;
_ipcp->state = IPCP_SHUTDOWN;
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
if (clean_threads) {
pthread_cancel(_ap_instance->sduloop);
@@ -278,12 +277,12 @@ static int ipcp_local_bootstrap(struct dif_config * conf)
}
if (_ipcp->state != IPCP_INIT) {
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
LOG_ERR("IPCP in wrong state.");
return -1;
}
- rw_lock_wrlock(&_ipcp->state_lock);
+ pthread_rwlock_wrlock(&_ipcp->state_lock);
_ipcp->state = IPCP_ENROLLED;
@@ -292,7 +291,7 @@ static int ipcp_local_bootstrap(struct dif_config * conf)
ipcp_local_sdu_loop,
NULL);
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
LOG_DBG("Bootstrapped local IPCP with pid %d.",
getpid());
@@ -302,25 +301,25 @@ static int ipcp_local_bootstrap(struct dif_config * conf)
static int ipcp_local_name_reg(char * name)
{
- rw_lock_rdlock(&_ipcp->state_lock);
+ pthread_rwlock_rdlock(&_ipcp->state_lock);
if (_ipcp->state != IPCP_ENROLLED) {
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
LOG_DBGF("Won't register with non-enrolled IPCP.");
return -1; /* -ENOTENROLLED */
}
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
- rw_lock_rdlock(&_ipcp->state_lock);
+ pthread_rwlock_rdlock(&_ipcp->state_lock);
if (ipcp_data_add_reg_entry(_ipcp->data, name)) {
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
LOG_DBGF("Failed to add %s to local registry.", name);
return -1;
}
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
LOG_DBG("Registered %s.", name);
@@ -329,11 +328,11 @@ static int ipcp_local_name_reg(char * name)
static int ipcp_local_name_unreg(char * name)
{
- rw_lock_rdlock(&_ipcp->state_lock);
+ pthread_rwlock_rdlock(&_ipcp->state_lock);
ipcp_data_del_reg_entry(_ipcp->data, name);
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
return 0;
}
@@ -356,26 +355,26 @@ static int ipcp_local_flow_alloc(pid_t n_pid,
/* This ipcpd has all QoS */
- rw_lock_rdlock(&_ipcp->state_lock);
+ pthread_rwlock_rdlock(&_ipcp->state_lock);
if (_ipcp->state != IPCP_ENROLLED) {
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
LOG_DBGF("Won't allocate flow with non-enrolled IPCP.");
return -1; /* -ENOTENROLLED */
}
rb = shm_ap_rbuff_open(n_pid);
if (rb == NULL) {
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
return -1; /* -ENORBUFF */
}
- rw_lock_wrlock(&_ap_instance->flows_lock);
+ pthread_rwlock_wrlock(&_ap_instance->flows_lock);
in_fd = bmp_allocate(_ap_instance->fds);
if (!bmp_is_id_valid(_ap_instance->fds, in_fd)) {
- rw_lock_unlock(&_ap_instance->flows_lock);
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ap_instance->flows_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
return -EMFILE;
}
@@ -391,8 +390,8 @@ static int ipcp_local_flow_alloc(pid_t n_pid,
src_ae_name);
if (port_id < 0) {
- rw_lock_unlock(&_ap_instance->flows_lock);
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ap_instance->flows_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
LOG_ERR("Could not get port id from IRMd");
/* shm_ap_rbuff_close(n_pid); */
return -1;
@@ -401,8 +400,8 @@ static int ipcp_local_flow_alloc(pid_t n_pid,
out_fd = bmp_allocate(_ap_instance->fds);
if (!bmp_is_id_valid(_ap_instance->fds, out_fd)) {
/* shm_ap_rbuff_close(n_pid); */
- rw_lock_unlock(&_ap_instance->flows_lock);
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ap_instance->flows_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
return -1; /* -ENOMOREFDS */
}
@@ -413,8 +412,8 @@ static int ipcp_local_flow_alloc(pid_t n_pid,
_ap_instance->in_out[in_fd] = out_fd;
_ap_instance->in_out[out_fd] = in_fd;
- rw_lock_unlock(&_ap_instance->flows_lock);
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ap_instance->flows_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
LOG_DBGF("Pending local allocation request, port_id %d.", port_id);
@@ -433,23 +432,23 @@ static int ipcp_local_flow_alloc_resp(pid_t n_pid,
if (response)
return 0;
- rw_lock_rdlock(&_ipcp->state_lock);
+ pthread_rwlock_rdlock(&_ipcp->state_lock);
/* awaken pending flow */
- rw_lock_wrlock(&_ap_instance->flows_lock);
+ pthread_rwlock_wrlock(&_ap_instance->flows_lock);
in_fd = port_id_to_fd(port_id);
if (in_fd < 0) {
- rw_lock_unlock(&_ap_instance->flows_lock);
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ap_instance->flows_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
LOG_DBGF("Could not find flow with port_id %d.", port_id);
return -1;
}
if (_ap_instance->flows[in_fd].state != FLOW_PENDING) {
- rw_lock_unlock(&_ap_instance->flows_lock);
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ap_instance->flows_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
LOG_DBGF("Flow was not pending.");
return -1;
}
@@ -460,8 +459,8 @@ static int ipcp_local_flow_alloc_resp(pid_t n_pid,
_ap_instance->flows[in_fd].state = FLOW_NULL;
_ap_instance->flows[in_fd].port_id = -1;
_ap_instance->in_out[in_fd] = -1;
- rw_lock_unlock(&_ap_instance->flows_lock);
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ap_instance->flows_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
return -1;
}
@@ -472,24 +471,24 @@ static int ipcp_local_flow_alloc_resp(pid_t n_pid,
out_fd = _ap_instance->in_out[in_fd];
if (out_fd < 0) {
- rw_lock_unlock(&_ap_instance->flows_lock);
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ap_instance->flows_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
LOG_DBGF("No pending local flow with port_id %d.", port_id);
return -1;
}
if (_ap_instance->flows[out_fd].state != FLOW_PENDING) {
/* FIXME: clean up other end */
- rw_lock_unlock(&_ap_instance->flows_lock);
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ap_instance->flows_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
LOG_DBGF("Flow was not pending.");
return -1;
}
_ap_instance->flows[out_fd].state = FLOW_ALLOCATED;
- rw_lock_unlock(&_ap_instance->flows_lock);
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ap_instance->flows_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
if ((ret = ipcp_flow_alloc_reply(getpid(),
_ap_instance->flows[out_fd].port_id,
@@ -509,13 +508,13 @@ static int ipcp_local_flow_dealloc(int port_id)
int fd = -1;
struct shm_ap_rbuff * rb;
- rw_lock_rdlock(&_ipcp->state_lock);
- rw_lock_wrlock(&_ap_instance->flows_lock);
+ pthread_rwlock_rdlock(&_ipcp->state_lock);
+ pthread_rwlock_wrlock(&_ap_instance->flows_lock);
fd = port_id_to_fd(port_id);
if (fd < 0) {
- rw_lock_unlock(&_ap_instance->flows_lock);
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ap_instance->flows_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
LOG_DBGF("Could not find flow with port_id %d.", port_id);
return 0;
}
@@ -532,12 +531,12 @@ static int ipcp_local_flow_dealloc(int port_id)
rb = _ap_instance->flows[fd].rb;
_ap_instance->flows[fd].rb = NULL;
- rw_lock_unlock(&_ap_instance->flows_lock);
+ pthread_rwlock_unlock(&_ap_instance->flows_lock);
if (rb != NULL)
shm_ap_rbuff_close(rb);
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
LOG_DBGF("Flow with port_id %d deallocated.", port_id);
@@ -632,7 +631,7 @@ int main (int argc, char * argv[])
exit(1);
}
- rw_lock_wrlock(&_ipcp->state_lock);
+ pthread_rwlock_wrlock(&_ipcp->state_lock);
pthread_sigmask(SIG_BLOCK, &sigset, NULL);
@@ -640,7 +639,7 @@ int main (int argc, char * argv[])
pthread_sigmask(SIG_UNBLOCK, &sigset, NULL);
- rw_lock_unlock(&_ipcp->state_lock);
+ pthread_rwlock_unlock(&_ipcp->state_lock);
pthread_join(_ap_instance->mainloop, NULL);