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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  [PATCH] get rid of __exit_files(), __exit_fs() and __put_fs_struct()
  [PATCH] proc_readfd_common() race fix
  [PATCH] double-free of inode on alloc_file() failure exit in create_write_pipe()
  [PATCH] teach seq_file to discard entries
  [PATCH] umount_tree() will unhash everything itself
  [PATCH] get rid of more nameidata passing in namespace.c
  [PATCH] switch a bunch of LSM hooks from nameidata to path
  [PATCH] lock exclusively in collect_mounts() and drop_collected_mounts()
  [PATCH] move a bunch of declarations to fs/internal.h
This commit is contained in:
Linus Torvalds
2008-04-22 18:27:56 -07:00
parent 934b7024f0 1ec7f1ddbe
commit 94bc891b00
18 changed files with 118 additions and 120 deletions
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16
fs/seq_file.c
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@@ -25,6 +25,7 @@
* into the buffer. In case of error ->start() and ->next() return
* ERR_PTR(error). In the end of sequence they return %NULL. ->show()
* returns 0 in case of success and negative number in case of error.
* Returning SEQ_SKIP means "discard this element and move on".
*/
int seq_open(struct file *file, const struct seq_operations *op)
{
@@ -114,8 +115,10 @@ ssize_t seq_read(struct file *file, char __user *buf, size_t size, loff_t *ppos)
if (!p || IS_ERR(p))
break;
err = m->op->show(m, p);
if (err)
if (err < 0)
break;
if (unlikely(err))
m->count = 0;
if (m->count < m->size)
goto Fill;
m->op->stop(m, p);
@@ -140,9 +143,10 @@ Fill:
break;
}
err = m->op->show(m, p);
if (err || m->count == m->size) {
if (m->count == m->size || err) {
m->count = offs;
break;
if (likely(err <= 0))
break;
}
pos = next;
}
@@ -199,8 +203,12 @@ static int traverse(struct seq_file *m, loff_t offset)
if (IS_ERR(p))
break;
error = m->op->show(m, p);
if (error)
if (error < 0)
break;
if (unlikely(error)) {
error = 0;
m->count = 0;
}
if (m->count == m->size)
goto Eoverflow;
if (pos + m->count > offset) {