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processctl() PCTL_SPAWN cmd, scheduler embryo state, redirected pipes

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This commit is contained in:
Kamil Kowalczyk
2025-09-10 01:11:22 +02:00
parent c4c26e0e19
commit 91c493c818
17 changed files with 183 additions and 28 deletions
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47
kernel/syscall/ipcpipe.c
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@ -43,12 +43,14 @@ int32_t SYSCALL5(sys_ipcpipe, pid1, pipenum1, cmd1, buffer1, len1) {
goto done;
}
if ((ret = ipc_pipeinit(pipe)) < 0) {
if ((ret = ipc_pipeinit(pipe, proc->pid)) < 0) {
ret = E_NOMEMORY;
goto done;
}
spinlock_acquire(&proc->pipes_spinlock);
proc->pipes[pipenum] = pipe;
spinlock_release(&proc->pipes_spinlock);
ret = E_OK;
} break;
@ -64,7 +66,9 @@ int32_t SYSCALL5(sys_ipcpipe, pid1, pipenum1, cmd1, buffer1, len1) {
goto done;
}
spinlock_acquire(&proc->pipes_spinlock);
IpcPipe *pipe = proc->pipes[pipenum];
spinlock_release(&proc->pipes_spinlock);
if (pipe == NULL) {
ret = E_INVALIDARGUMENT;
@ -85,7 +89,9 @@ int32_t SYSCALL5(sys_ipcpipe, pid1, pipenum1, cmd1, buffer1, len1) {
goto done;
}
spinlock_acquire(&proc->pipes_spinlock);
IpcPipe *pipe = proc->pipes[pipenum];
spinlock_release(&proc->pipes_spinlock);
if (pipe == NULL) {
ret = E_INVALIDARGUMENT;
@ -100,7 +106,9 @@ int32_t SYSCALL5(sys_ipcpipe, pid1, pipenum1, cmd1, buffer1, len1) {
goto done;
}
spinlock_acquire(&proc->pipes_spinlock);
IpcPipe *pipe = proc->pipes[pipenum];
spinlock_release(&proc->pipes_spinlock);
if (pipe == NULL) {
ret = E_INVALIDARGUMENT;
@ -125,6 +133,43 @@ int32_t SYSCALL5(sys_ipcpipe, pid1, pipenum1, cmd1, buffer1, len1) {
ret = E_OK;
} break;
case IPCPIPE_REPLACE: {
if (pipenum >= PROC_PIPEHANDLES_MAX) {
ret = E_NOMEMORY;
goto done;
}
uint64_t pid2 = buffer1;
uint64_t pipenum2 = len1;
spinlock_acquire(&PROCS.spinlock);
Proc *proc2 = NULL;
LL_FINDPROP(PROCS.procs, proc2, pid, pid2);
spinlock_release(&PROCS.spinlock);
if (proc2 == NULL) {
ret = E_INVALIDARGUMENT;
goto done;
}
if (pipenum2 >= PROC_PIPEHANDLES_MAX) {
ret = E_NOMEMORY;
goto done;
}
spinlock_acquire(&proc2->pipes_spinlock);
spinlock_acquire(&proc->pipes_spinlock);
if (proc->pipes[pipenum] != NULL) {
ipc_pipefree(proc->pipes[pipenum]);
dlfree(proc->pipes[pipenum]);
proc->pipes[pipenum] = NULL;
}
proc->pipes[pipenum] = proc2->pipes[pipenum2];
spinlock_release(&proc->pipes_spinlock);
spinlock_release(&proc2->pipes_spinlock);
} break;
default: {
ret = E_INVALIDARGUMENT;
} break;