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[PATCH] s390: update fs3270 to use a struct pid

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Replaces the pid_t value with a struct pid to avoid pid wrap around
problems.

Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-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:
Cedric Le Goater 2006-10-02 02:17:28 -07:00 committed by Linus Torvalds
parent 2425c08b37
commit 782237a241
1 changed files with 6 additions and 5 deletions
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11
drivers/s390/char/fs3270.c
View File

@ -27,7 +27,7 @@ struct raw3270_fn fs3270_fn;
struct fs3270 {
struct raw3270_view view;
pid_t fs_pid; /* Pid of controlling program. */
struct pid *fs_pid; /* Pid of controlling program. */
int read_command; /* ccw command to use for reads. */
int write_command; /* ccw command to use for writes. */
int attention; /* Got attention. */
@ -102,7 +102,7 @@ fs3270_restore_callback(struct raw3270_request *rq, void *data)
fp = (struct fs3270 *) rq->view;
if (rq->rc != 0 || rq->rescnt != 0) {
if (fp->fs_pid)
kill_proc(fp->fs_pid, SIGHUP, 1);
kill_pid(fp->fs_pid, SIGHUP, 1);
}
fp->rdbuf_size = 0;
raw3270_request_reset(rq);
@ -173,7 +173,7 @@ fs3270_save_callback(struct raw3270_request *rq, void *data)
*/
if (rq->rc != 0 || rq->rescnt == 0) {
if (fp->fs_pid)
kill_proc(fp->fs_pid, SIGHUP, 1);
kill_pid(fp->fs_pid, SIGHUP, 1);
fp->rdbuf_size = 0;
} else
fp->rdbuf_size = fp->rdbuf->size - rq->rescnt;
@ -442,7 +442,7 @@ fs3270_open(struct inode *inode, struct file *filp)
return PTR_ERR(fp);
init_waitqueue_head(&fp->wait);
fp->fs_pid = current->pid;
fp->fs_pid = get_pid(task_pid(current));
rc = raw3270_add_view(&fp->view, &fs3270_fn, minor);
if (rc) {
fs3270_free_view(&fp->view);
@ -480,7 +480,8 @@ fs3270_close(struct inode *inode, struct file *filp)
fp = filp->private_data;
filp->private_data = NULL;
if (fp) {
fp->fs_pid = 0;
put_pid(fp->fs_pid);
fp->fs_pid = NULL;
raw3270_reset(&fp->view);
raw3270_put_view(&fp->view);
raw3270_del_view(&fp->view);