Imbus/xv6-riscv-kernel
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fork/wait/exit work

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This commit is contained in:
Robert Morris 2019-05-31 09:45:59 -04:00
parent 0f90388c89
commit 2ec1959fd1
30 changed files with 1098 additions and 1863 deletions
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12
sysfile.c
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@ -41,11 +41,11 @@ static int
fdalloc(struct file *f)
{
int fd;
struct proc *curproc = myproc();
struct proc *p = myproc();
for(fd = 0; fd < NOFILE; fd++){
if(curproc->ofile[fd] == 0){
curproc->ofile[fd] = f;
if(p->ofile[fd] == 0){
p->ofile[fd] = f;
return fd;
}
}
@ -374,7 +374,7 @@ sys_chdir(void)
{
char *path;
struct inode *ip;
struct proc *curproc = myproc();
struct proc *p = myproc();
begin_op();
if(argstr(0, &path) < 0 || (ip = namei(path)) == 0){
@ -388,9 +388,9 @@ sys_chdir(void)
return -1;
}
iunlock(ip);
iput(curproc->cwd);
iput(p->cwd);
end_op();
curproc->cwd = ip;
p->cwd = ip;
return 0;
}