81 lines
1.6 KiB
C
81 lines
1.6 KiB
C
#include <stdint.h>
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#include "syscall.h"
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#include "proc/proc.h"
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#include "spinlock/spinlock.h"
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#include "errors.h"
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#include "util/util.h"
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#include "sysdefs/processctl.h"
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#include "vfs/vfs.h"
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#include "path/path.h"
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#include "kprintf.h"
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#define PCTL_MP_MAX 0xff
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#define PCTL_PATH_MAX VFS_PATH_MAX
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int32_t SYSCALL3(sys_processctl, pid1, cmd1, arg1) {
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uint64_t pid = pid1;
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uint64_t cmd = cmd1;
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int32_t ret = E_OK;
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if (pid == (uint64_t)-1) {
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pid = PROCS.current->pid;
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}
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spinlock_acquire(&PROCS.spinlock);
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Proc *proc = NULL;
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LL_FINDPROP(PROCS.procs, proc, pid, pid);
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spinlock_release(&PROCS.spinlock);
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if (proc == NULL) {
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if (cmd == PCTL_POLLSTATE) {
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ret = 2;
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goto done;
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}
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ret = E_INVALIDARGUMENT;
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goto done;
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}
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switch (cmd) {
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case PCTL_KILL: {
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proc_kill(proc);
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ret = E_DOSCHEDULING;
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} break;
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case PCTL_SPAWN: {
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const char *opath = (const char *)arg1;
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if (opath == NULL) {
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ret = E_INVALIDARGUMENT;
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goto done;
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}
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char mp[PCTL_MP_MAX];
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char path[PCTL_PATH_MAX];
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path_parse(opath, mp, path);
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Proc *newproc = proc_spawnuser(mp, path);
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if (newproc == NULL) {
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ret = E_NOMEMORY;
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goto done;
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}
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proc_register(newproc);
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ret = newproc->pid;
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} break;
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case PCTL_POLLSTATE: {
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ret = proc->state;
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} break;
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case PCTL_RUN: {
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proc->state = PROC_READY;
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} break;
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case PCTL_GETPID: {
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ret = proc->pid;
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} break;
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default: {
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ret = E_INVALIDARGUMENT;
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} break;
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}
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done:
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return ret;
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}
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