From 4ca0bdf61196d0c3fd3f0fdbfb2d72481025cca2 Mon Sep 17 00:00:00 2001 From: Jon Santmyer Date: Sun, 6 Sep 2026 16:50:28 -0400 Subject: add syscall for vtt_write --- sys/syscall_vtt.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 sys/syscall_vtt.c (limited to 'sys/syscall_vtt.c') diff --git a/sys/syscall_vtt.c b/sys/syscall_vtt.c new file mode 100644 index 0000000..4b58b2c --- /dev/null +++ b/sys/syscall_vtt.c @@ -0,0 +1,42 @@ +#include "jove.h" +#include "lib/printf.h" +#include "lib/virtterm.h" +#include "syscall.h" + +static int +s_syscall_vtt_write( + jove_owned_obj_t *vtt, + size_t payload_bytes, + void *payload_data) +{ + if(payload_bytes < sizeof(struct syscall_vtt_write)) { + kprintf("syscall_vtt_write: message is too small for this syscall!\n"); + return EOOB; + } + struct syscall_vtt_write *payload = payload_data; + if(payload_bytes < sizeof(struct syscall_vtt_write) + payload->len) { + kprintf("syscall_vtt_write: message is to small for payload! (%i vs %i)\n", + payload->len, payload_bytes); + return EOOB; + } + return vt_write(vtt, payload->data, payload->len); +} + +int +_syscall_handle_vtt( + jove_owned_obj_t *pcb_obj, + jove_owned_obj_t *objdir, + jove_owned_obj_t *message_obj, + jove_owned_obj_t *target_obj, + struct syscall_header *header, + size_t bytes_left, + void *payload_data) +{ + switch(header->callid) { + case 0: + return s_syscall_vtt_write(target_obj, bytes_left, payload_data); + default: + kprintf("syscall_vtt: vtt object does not support syscall %i\n", header->callid); + return EOOB; + } +} -- cgit v1.2.3