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[PATCH] smbfs: Make conn_pid a struct pid

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smbfs keeps track of the user space server process in conn_pid.  This converts
that track to use a struct pid instead of pid_t.  This keeps us safe from pid
wrap around issues and prepares the way for the pid namespace.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Eric W. Biederman 2006-12-13 00:35:10 -08:00 committed by Linus Torvalds
parent 3cec556a84
commit a71113da44
4 changed files with 10 additions and 8 deletions
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5
fs/smbfs/inode.c
View file

@ -482,12 +482,13 @@ smb_put_super(struct super_block *sb)
smb_close_socket(server);
if (server->conn_pid)
kill_proc(server->conn_pid, SIGTERM, 1);
kill_pid(server->conn_pid, SIGTERM, 1);
kfree(server->ops);
smb_unload_nls(server);
sb->s_fs_info = NULL;
smb_unlock_server(server);
put_pid(server->conn_pid);
kfree(server);
}
@ -530,7 +531,7 @@ static int smb_fill_super(struct super_block *sb, void *raw_data, int silent)
INIT_LIST_HEAD(&server->xmitq);
INIT_LIST_HEAD(&server->recvq);
server->conn_error = 0;
server->conn_pid = 0;
server->conn_pid = NULL;
server->state = CONN_INVALID; /* no connection yet */
server->generation = 0;

6
fs/smbfs/proc.c
View file

@ -877,7 +877,7 @@ smb_newconn(struct smb_sb_info *server, struct smb_conn_opt *opt)
goto out_putf;
server->sock_file = filp;
server->conn_pid = current->pid;
server->conn_pid = get_pid(task_pid(current));
server->opt = *opt;
server->generation += 1;
server->state = CONN_VALID;
@ -971,8 +971,8 @@ smb_newconn(struct smb_sb_info *server, struct smb_conn_opt *opt)
}
VERBOSE("protocol=%d, max_xmit=%d, pid=%d capabilities=0x%x\n",
server->opt.protocol, server->opt.max_xmit, server->conn_pid,
server->opt.capabilities);
server->opt.protocol, server->opt.max_xmit,
pid_nr(server->conn_pid), server->opt.capabilities);
/* FIXME: this really should be done by smbmount. */
if (server->opt.max_xmit > SMB_MAX_PACKET_SIZE) {

5
fs/smbfs/smbiod.c
View file

@ -152,7 +152,7 @@ int smbiod_retry(struct smb_sb_info *server)
{
struct list_head *head;
struct smb_request *req;
pid_t pid = server->conn_pid;
struct pid *pid = get_pid(server->conn_pid);
int result = 0;
VERBOSE("state: %d\n", server->state);
@ -222,7 +222,7 @@ int smbiod_retry(struct smb_sb_info *server)
/*
* Note: use the "priv" flag, as a user process may need to reconnect.
*/
result = kill_proc(pid, SIGUSR1, 1);
result = kill_pid(pid, SIGUSR1, 1);
if (result) {
/* FIXME: this is most likely fatal, umount? */
printk(KERN_ERR "smb_retry: signal failed [%d]\n", result);
@ -233,6 +233,7 @@ int smbiod_retry(struct smb_sb_info *server)
/* FIXME: The retried requests should perhaps get a "time boost". */
out:
put_pid(pid);
return result;
}

2
include/linux/smb_fs_sb.h
View file

@ -55,7 +55,7 @@ struct smb_sb_info {
* generation is incremented.
*/
unsigned int generation;
pid_t conn_pid;
struct pid *conn_pid;
struct smb_conn_opt opt;
wait_queue_head_t conn_wq;
int conn_complete;