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fd: Standartize arguments for fd opening stages handlers

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Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Pavel Emelyanov 2012-09-13 00:17:57 +04:00
parent b0502e4fe8
commit cc41192f10
1 changed files with 28 additions and 26 deletions
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54
files.c
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@ -378,21 +378,22 @@ static int send_fd_to_self(int fd, struct fdinfo_list_entry *fle, int *sock)
return 0;
}
static int post_open_fd(int pid, FdinfoEntry *fe, struct file_desc *d)
static int post_open_fd(int pid, struct fdinfo_list_entry *fle)
{
struct fdinfo_list_entry *fle;
struct file_desc *d = fle->desc;
struct fdinfo_list_entry *flem;
if (!d->ops->post_open)
return 0;
if (is_service_fd(fe->fd, CTL_TTY_OFF))
return d->ops->post_open(d, fe->fd);
if (is_service_fd(fle->fe->fd, CTL_TTY_OFF))
return d->ops->post_open(d, fle->fe->fd);
fle = file_master(d);
if ((fle->pid != pid) || (fe->fd != fle->fe->fd))
flem = file_master(d);
if ((flem->pid != pid) || (fle->fe->fd != flem->fe->fd))
return 0;
return d->ops->post_open(d, fle->fe->fd);
return d->ops->post_open(d, flem->fe->fd);
}
@ -425,50 +426,51 @@ static int serve_out_fd(int pid, int fd, struct file_desc *d)
return 0;
}
static int open_fd(int pid, FdinfoEntry *fe, struct file_desc *d)
static int open_fd(int pid, struct fdinfo_list_entry *fle)
{
struct file_desc *d = fle->desc;
int new_fd;
struct fdinfo_list_entry *fle;
struct fdinfo_list_entry *flem;
fle = file_master(d);
if ((fle->pid != pid) || (fe->fd != fle->fe->fd))
flem = file_master(d);
if ((flem->pid != pid) || (fle->fe->fd != flem->fe->fd))
return 0;
new_fd = d->ops->open(d);
if (new_fd < 0)
return -1;
if (reopen_fd_as(fe->fd, new_fd))
if (reopen_fd_as(fle->fe->fd, new_fd))
return -1;
fcntl(fe->fd, F_SETFD, fe->flags);
fcntl(fle->fe->fd, F_SETFD, fle->fe->flags);
return serve_out_fd(pid, fe->fd, d);
return serve_out_fd(pid, fle->fe->fd, d);
}
static int receive_fd(int pid, FdinfoEntry *fe, struct file_desc *d)
static int receive_fd(int pid, struct fdinfo_list_entry *fle)
{
int tmp;
struct fdinfo_list_entry *fle;
struct fdinfo_list_entry *flem;
fle = file_master(d);
flem = file_master(fle->desc);
if (fle->pid == pid)
if (flem->pid == pid)
return 0;
pr_info("\tReceive fd for %d\n", fe->fd);
pr_info("\tReceive fd for %d\n", fle->fe->fd);
tmp = recv_fd(fe->fd);
tmp = recv_fd(fle->fe->fd);
if (tmp < 0) {
pr_err("Can't get fd %d\n", tmp);
return -1;
}
close(fe->fd);
close(fle->fe->fd);
if (reopen_fd_as(fe->fd, tmp) < 0)
if (reopen_fd_as(fle->fe->fd, tmp) < 0)
return -1;
fcntl(tmp, F_SETFD, fe->flags);
fcntl(tmp, F_SETFD, fle->fe->flags);
return 0;
}
@ -492,13 +494,13 @@ static int open_fdinfo(int pid, struct fdinfo_list_entry *fle, int state)
ret = open_transport_fd(pid, fle);
break;
case FD_STATE_CREATE:
ret = open_fd(pid, fle->fe, fle->desc);
ret = open_fd(pid, fle);
break;
case FD_STATE_RECV:
ret = receive_fd(pid, fle->fe, fle->desc);
ret = receive_fd(pid, fle);
break;
case FD_STATE_POST_CREATE:
ret = post_open_fd(pid, fle->fe, fle->desc);
ret = post_open_fd(pid, fle);
break;
}