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Store device structs in a dynamic list

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This commit is contained in:
Kamil Kowalczyk
2025-10-03 22:25:16 +02:00
parent c0178a1405
commit 57ba9ff126
10 changed files with 44 additions and 24 deletions
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28
kernel/syscall/devctl.c
View File

@ -10,10 +10,7 @@
#include "dev/ps2kbdev.h"
#include "util/util.h"
Dev *DEVS[] = {
[0x10] = &TERMDEV,
[0x11] = &PS2KBDEV,
};
Dev *DEVS = NULL;
int32_t SYSCALL5(sys_devctl, devh1, cmd1, buffer1, len1, extra1) {
uint64_t *devh = (uint64_t *)devh1;
@ -26,9 +23,18 @@ int32_t SYSCALL5(sys_devctl, devh1, cmd1, buffer1, len1, extra1) {
switch (cmd) {
case DEVCTL_GET_HANDLE: {
uint64_t devid = buffer1;
if (devid >= LEN(DEVS)) {
ret = E_INVALIDARGUMENT;
Dev *founddev = NULL;
size_t i = 0;
Dev *dev, *devtmp;
LL_FOREACH_SAFE_IDX(DEVS, dev, devtmp, i) {
if (i == buffer1) {
founddev = dev;
break;
}
}
if (founddev == NULL) {
ret = E_NOENTRY;
goto done;
}
@ -36,14 +42,14 @@ int32_t SYSCALL5(sys_devctl, devh1, cmd1, buffer1, len1, extra1) {
for (size_t i = 0; i < PROC_DEVHANDLES_MAX; i++) {
if (proc->devs[i] == NULL) {
found = true;
proc->devs[i] = DEVS[devid];
proc->devs[i] = founddev;
*devh = i;
break;
}
}
if (!found) {
ret = E_NOENTRY;
ret = E_NOMEMORY;
goto done;
}
} break;
@ -59,6 +65,10 @@ int32_t SYSCALL5(sys_devctl, devh1, cmd1, buffer1, len1, extra1) {
}
Dev *dev = proc->devs[*devh];
if (dev == NULL) {
ret = E_NOENTRY;
goto done;
}
ret = dev->fns[cmd]((uint8_t *)buffer1, (size_t)len1, (void *)extra1);
} break;
}

3
kernel/syscall/devctl.h
View File

@ -3,6 +3,9 @@
#include <stdint.h>
#include "syscall.h"
#include "dev/dev.h"
extern Dev *DEVS;
int32_t SYSCALL5(sys_devctl, devh1, cmd1, buffer1, len1, extra1);