mirrors/Astral
1
0
Fork 0
mirror of https://github.com/Mathewnd/Astral.git synced 2026-10-30 14:08:21 +00:00
Code Issues Packages Projects Releases Wiki Activity

pipefs: named pipe support

Browse Source
This commit is contained in:
Matheus
2024-08-11 14:46:16 -03:00
parent b6ed9c1bac
commit 227b390f30
5 changed files with 36 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel-src/fs/pipefs.c
+19 -11
View File
@@ -72,16 +72,14 @@ int pipefs_open(vnode_t **node, int flags, cred_t *cred) {
// and there are either no writers or no readers.
eventlistener_t listener;
EVENT_INITLISTENER(&listener);
EVENT_ATTACH(&listener, &pipenode->openevent);
if (flags & V_FFLAGS_READ)
EVENT_ATTACH(&listener, &pipenode->writeopenevent);
else
EVENT_ATTACH(&listener, &pipenode->readopenevent);
while (1) {
VOP_UNLOCK(*node);
error = EVENT_WAIT(&listener, 0);
VOP_LOCK(*node);
if (error || (pipenode->writers > 0 && pipenode->readers > 0))
break;
}
VOP_UNLOCK(*node);
error = EVENT_WAIT(&listener, 0);
VOP_LOCK(*node);
EVENT_DETACHALL(&listener);
@@ -90,7 +88,10 @@ int pipefs_open(vnode_t **node, int flags, cred_t *cred) {
VOP_UNLOCK(*node);
pipefs_close(*node, flags, cred);
} else {
EVENT_SIGNAL(&pipenode->openevent);
if (flags & V_FFLAGS_READ)
EVENT_SIGNAL(&pipenode->readopenevent);
else
EVENT_SIGNAL(&pipenode->writeopenevent);
VOP_UNLOCK(*node);
}
@@ -374,7 +375,8 @@ static void ctor(scache_t *cache, void *obj) {
VOP_INIT(&node->vnode, &vnops, 0, V_TYPE_FIFO, NULL);
node->attr.inode = ++currentinode;
POLL_INITHEADER(&node->pollheader);
EVENT_INITHEADER(&node->openevent);
EVENT_INITHEADER(&node->writeopenevent);
EVENT_INITHEADER(&node->readopenevent);
}
void pipefs_init() {
@@ -406,6 +408,7 @@ int pipefs_getbinding(vnode_t *node, vnode_t **pipep) {
if (node->fifobinding) {
*pipep = node->fifobinding;
VOP_HOLD(*pipep);
return 0;
}
@@ -413,6 +416,11 @@ int pipefs_getbinding(vnode_t *node, vnode_t **pipep) {
if (error)
return error;
VOP_HOLD(*pipep);
node->fifobinding = *pipep;
return error;
}
void pipefs_leavebinding(vnode_t *pipenode) {
VOP_RELEASE(pipenode);
}