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fd: Split fd opening and serving out routines

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Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Pavel Emelyanov 2012-09-13 00:08:39 +04:00
parent ae4796d025
commit b0502e4fe8
1 changed files with 28 additions and 20 deletions
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48
files.c
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@ -395,41 +395,28 @@ static int post_open_fd(int pid, FdinfoEntry *fe, struct file_desc *d)
return d->ops->post_open(d, fle->fe->fd);
}
static int open_fd(int pid, FdinfoEntry *fe, struct file_desc *d)
static int serve_out_fd(int pid, int fd, struct file_desc *d)
{
int ret;
int sock;
int sock, ret;
struct fdinfo_list_entry *fle;
fle = file_master(d);
if ((fle->pid != pid) || (fe->fd != fle->fe->fd))
return 0;
ret = d->ops->open(d);
if (ret < 0)
return -1;
if (reopen_fd_as(fe->fd, ret))
return -1;
fcntl(fe->fd, F_SETFD, fe->flags);
sock = socket(PF_UNIX, SOCK_DGRAM, 0);
if (sock < 0) {
pr_perror("Can't create socket");
return -1;
}
pr_info("\t\tCreate fd for %d\n", fe->fd);
pr_info("\t\tCreate fd for %d\n", fd);
list_for_each_entry(fle, &d->fd_info_head, desc_list) {
if (pid == fle->pid)
ret = send_fd_to_self(fe->fd, fle, &sock);
ret = send_fd_to_self(fd, fle, &sock);
else
ret = send_fd_to_peer(fe->fd, fle, sock);
ret = send_fd_to_peer(fd, fle, sock);
if (ret) {
pr_err("Can't sent fd %d to %d\n", fe->fd, fle->pid);
pr_err("Can't sent fd %d to %d\n", fd, fle->pid);
return -1;
}
}
@ -438,6 +425,27 @@ static int open_fd(int pid, FdinfoEntry *fe, struct file_desc *d)
return 0;
}
static int open_fd(int pid, FdinfoEntry *fe, struct file_desc *d)
{
int new_fd;
struct fdinfo_list_entry *fle;
fle = file_master(d);
if ((fle->pid != pid) || (fe->fd != fle->fe->fd))
return 0;
new_fd = d->ops->open(d);
if (new_fd < 0)
return -1;
if (reopen_fd_as(fe->fd, new_fd))
return -1;
fcntl(fe->fd, F_SETFD, fe->flags);
return serve_out_fd(pid, fe->fd, d);
}
static int receive_fd(int pid, FdinfoEntry *fe, struct file_desc *d)
{
int tmp;