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Simple IPC with pipes

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This commit is contained in:
Kamil Kowalczyk
2025-09-06 11:47:01 +02:00
parent 643d692259
commit cd0e262e56
21 changed files with 312 additions and 17 deletions
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31
kernel/proc/proc.c
View File

@ -12,6 +12,7 @@
#include "errors.h"
#include "vfs/vfs.h"
#include "bootinfo/bootinfo.h"
#include "ipc/pipe/pipe.h"
#define PROC_REAPER_FREQ 30
@ -162,6 +163,9 @@ Proc *proc_spawnuser(char *mountpoint, char *path) {
proc->state = PROC_READY;
proc->pid = pids++;
proc->pipes[0] = dlmalloc(sizeof(IpcPipe));
ipc_pipeinit(proc->pipes[0]);
return proc;
}
@ -201,6 +205,14 @@ void proc_reaper(void) {
}
}
for (size_t i = 0; i < PROC_PIPEHANDLES_MAX; i++) {
if (zombie->pipes[i] != NULL) {
dlfree(zombie->pipes[i]);
ipc_pipefree(zombie->pipes[i]);
zombie->pipes[i] = NULL;
}
}
pmm_free((uintptr_t)(zombie->platformdata.kstack - PROC_STACKSIZE), PROC_STACKBLOCKS);
if (!zombie->kern) {
@ -278,16 +290,31 @@ void proc_status(void) {
}
}
Proc *init_proc = NULL;
#define PIPEREADER_BUF_SIZE 100
void proc_init_pipereader(void) {
char buf[PIPEREADER_BUF_SIZE];
hal_memset(buf, 0, sizeof(buf));
for (;;) {
int32_t read = ipc_piperead(init_proc->pipes[0], buf, PIPEREADER_BUF_SIZE);
kprintf("%.*s", read, buf);
hal_memset(buf, 0, sizeof(buf));
}
}
void proc_init(void) {
spinlock_init(&PROCS.spinlock);
PROCS.procs = NULL;
Proc *idle = proc_spawnkern(&proc_idle, "kIDLE");
Proc *idle = proc_spawnkern(&proc_idle, "k-idle");
proc_register(idle);
PROCS.current = idle;
/* proc_register(proc_spawnkern(&proc_status, "status")); */
proc_register(proc_spawnuser("base", "/bin/init"));
init_proc = proc_spawnuser("base", "/bin/init");
proc_register(init_proc);
proc_register(proc_spawnkern(&proc_init_pipereader, "k-init-pipereader"));
hal_switchproc(&PROCS.current->platformdata.trapframe, (void *)PROCS.current->platformdata.cr3);
}

7
kernel/proc/proc.h
View File

@ -6,6 +6,7 @@
#include "spinlock/spinlock.h"
#include "bitmap/bitmap.h"
#include "vfs/vfs.h"
#include "ipc/pipe/pipe.h"
#define PROC_NAME_MAX 0x100
@ -13,7 +14,9 @@
#define PROC_STACKSIZE (PROC_STACKBLOCKS * BITMAP_BLOCK_SIZE)
#define PROC_MAX 0x100 // max amount of processes
#define PROC_VFSHANDLES_MAX 0x80
#define PROC_VFSHANDLES_MAX 0x80
#define PROC_PIPEHANDLES_MAX 0x20
typedef struct {
IntrStackFrame trapframe;
@ -42,6 +45,8 @@ typedef struct Proc {
VfsObj *vobjs[PROC_VFSHANDLES_MAX];
uint64_t vobjcnt;
IpcPipe *pipes[PROC_PIPEHANDLES_MAX];
} Proc;
typedef struct {