89 lines
2.0 KiB
C
89 lines
2.0 KiB
C
#include <rpc.h>
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#include <pthread.h>
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#include <serdes.h>
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#include <dbg.h>
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#include <sys/types.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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int num_devs;
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int max_devs;
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char** dev_names;
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pid_t* dev_pids;
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void devfs_mount(void* args) {
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serdes_state state;
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serialize_int(0,&state);
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serialize_ptr(NULL,&state);
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rpc_return(state.buf,state.sizeorpos);
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free(state.buf);
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pthread_exit(NULL);
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}
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void open(void* args) {
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serdes_state state;
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start_deserialize(args,&state);
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char* path=deserialize_str(&state);
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deserialize_ptr(&state);
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rpc_deallocate_buf(args,state.sizeorpos);
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int i;
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char found=0;
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for (i=0;i<num_devs;i++) {
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if (strcmp(dev_names[i],path)==0) {
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found=1;
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break;
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}
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}
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if (!found) {
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state.buf=NULL;
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state.sizeorpos=0;
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serialize_int(1,&state);
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serialize_ptr(NULL,&state);
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serialize_int(0,&state);
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rpc_return(state.buf,state.sizeorpos);
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pthread_exit(NULL);
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}
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state.buf=NULL;
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state.sizeorpos=0;
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serialize_int(0,&state);
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serialize_ptr(NULL,&state);
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serialize_int(dev_pids[i],&state);
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rpc_return(state.buf,state.sizeorpos);
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free(state.buf);
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pthread_exit(NULL);
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}
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void register_dev(void* args) {
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serdes_state state;
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start_deserialize(args,&state);
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char* name=deserialize_str(&state);
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pid_t pid=deserialize_int(&state);
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rpc_deallocate_buf(args,state.sizeorpos);
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if (num_devs==max_devs) {
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max_devs+=32;
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dev_names=realloc(dev_names,sizeof(char*)*max_devs);
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dev_pids=realloc(dev_pids,sizeof(pid_t)*max_devs);
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}
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dev_names[num_devs]=name;
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dev_pids[num_devs]=pid;
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num_devs++;
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rpc_return(NULL,0);
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pthread_exit(NULL);
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}
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int main() {
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num_devs=0;
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max_devs=32;
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dev_names=malloc(sizeof(char*)*32);
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dev_pids=malloc(sizeof(pid_t)*32);
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rpc_register_func("mount",&devfs_mount);
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rpc_register_func("open",&open);
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rpc_register_func("register_dev",®ister_dev);
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register_fs("devfs",getpid());
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serial_print("Devfs initialized\n");
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rpc_mark_as_init();
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}
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