kamkow1/my-os-project2
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ipcpipe Add pipe ownership guards

Browse Source
This commit is contained in:
Kamil Kowalczyk
2025-10-01 19:57:09 +02:00
parent fa8a774115
commit 0e4a35eb86
2 changed files with 5 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
kernel/syscall/ipcpipe.c
View File

@ -68,11 +68,11 @@ int32_t SYSCALL5(sys_ipcpipe, pid1, pipenum1, cmd1, buffer1, len1) {
}
spinlock_acquire(&proc->pipes_spinlock);
if (proc->pipes[pipenum] != NULL) {
if (proc->pipes[pipenum] != NULL && proc->pid == proc->pipes[pipenum]->ownerpid) {
ipc_pipefree(proc->pipes[pipenum]);
dlfree(proc->pipes[pipenum]);
proc->pipes[pipenum] = NULL;
}
proc->pipes[pipenum] = NULL;
spinlock_release(&proc->pipes_spinlock);
ret = E_OK;
} break;
@ -182,10 +182,9 @@ int32_t SYSCALL5(sys_ipcpipe, pid1, pipenum1, cmd1, buffer1, len1) {
spinlock_acquire(&proc2->pipes_spinlock);
spinlock_acquire(&proc->pipes_spinlock);
if (proc->pipes[pipenum] != NULL) {
if (proc->pipes[pipenum] != NULL && proc->pid == proc->pipes[pipenum]->ownerpid) {
ipc_pipefree(proc->pipes[pipenum]);
dlfree(proc->pipes[pipenum]);
proc->pipes[pipenum] = NULL;
}
proc->pipes[pipenum] = proc2->pipes[pipenum2];