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#define FOOLOS_MODULE_NAME "syscalls"
#include "lib/buffer/ringbuffer.h"
#include "lib/logger/log.h"
#include "lib/bool/bool.h"
#include "fs/fs.h"
#include "fs/ext2.h"
#include "kernel/console.h"
#include "kernel/config.h"
#include <sys/stat.h>
static int preread;
static int alloc=0x600000; // TODO: implement properly sbrk!!!
int syscall_write(int file, char *buf, int len)
{
#ifdef LOG_SYSCALLS
log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"write(file=%d, buf=0x%08X, len=%d)", file,buf,len);
#endif
// ALL output to stdout
for(int i=0;i<len;i++)
{
//PutConsoleChar(buf[i],0b1111111111000000);
console_put_char(buf[i]);
}
return len;
}
int syscall_read(int file, char *buf, int len)
{
#ifdef LOG_SYSCALLS
log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"read(file=%d, buf=0x%08X, len=%d)", file,buf,len);
#endif
// stdin
if(file==1)
{
char c;
while(1)
{
asm("cli");
bool ret=ringbuffer_get(&c);
asm("sti");
if(ret)
{
*buf=c;
if(c=='X')return 0;
return 1;
}
}
}
}
int syscall_readdir(const char *name,fs_dirent *dirs,int max)
{
#ifdef LOG_SYSCALLS
log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"readdir(name=0x%08X, dirs=0x%08X, %d)", name,dirs,max);
#endif
return fs_readdir(name,dirs,max);
}
int syscall_execve(char *name, char **argv, char **env)
{
#ifdef LOG_SYSCALLS
log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"execve (name=0x%08X, argvs=0x%08X, env=0x%08X)", name,argv,env);
#endif
ext2_inode_content(EXT2_RAM_ADDRESS,name,0x800000,0x100000);
// autorun "user-space" prog
asm("push $0x800000");
asm("ret");
}
int syscall_open(char *name, int flags, int len)
{
#ifdef LOG_SYSCALLS
log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"open (name=0x%08X, flags=%d, len=%d)", name,flags,len);
#endif
return 1;
}
//newcomers
//
int syscall_close(int file,int none1,int none2)
{
#ifdef LOG_SYSCALLS
log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"close (file=%d)", file);
#endif
return -1;
}
int syscall_fstat(int file, struct stat *st,int none)
{
#ifdef LOG_SYSCALLS
log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"fstat (file=%d,stat=0x%08X)", file,st);
#endif
st->st_mode = S_IFCHR;
return 0;
}
int syscall_isatty(int file,int none1,int none2)
{
#ifdef LOG_SYSCALLS
log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"isatty (file=%d)", file);
#endif
return 1;
}
int syscall_lseek(int file,int ptr,int dir)
{
#ifdef LOG_SYSCALLS
log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"lseek (file=%d, ptr=%d, dir=%d)", file,ptr,dir);
#endif
if(dir==0)preread=ptr;
else{ while(1);}
return preread;
}
caddr_t syscall_sbrk(int incr, int none1, int none2)
{
#ifdef LOG_SYSCALLS
log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"sbrk (incr=%d)", incr);
#endif
int oldalloc=alloc;
alloc+=incr;
return oldalloc;
/*
extern char end;
// char _end;
static char *heap_end;
char *prev_heap_end;
if (heap_end == 0) {
heap_end = &end;
}
prev_heap_end = heap_end;
if (heap_end + incr > stack_ptr) {
write (1, "Heap and stack collision\n", 25);
abort ();
}
heap_end += incr;
return (caddr_t) prev_heap_end;
*/
}
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