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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-08-03 11:35:20 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-08-03 11:35:20 -0700 |
| commit | a782e866497217f22c5d9014cbb7be8549151376 (patch) | |
| tree | f1fd2e196c53618e2485d7bc04b654158fefa21f /fs/open.c | |
| parent | d9395512c5bd326924ba0b36ee0d5d51d763a8d6 (diff) | |
| parent | 868941b14441282ba08761b770fc6cad69d5bdb7 (diff) | |
Merge tag 'pull-work.lseek' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs lseek updates from Al Viro:
"Jason's lseek series.
Saner handling of 'lseek should fail with ESPIPE' - this gets rid of
the magical no_llseek thing and makes checks consistent.
In particular, the ad-hoc "can we do splice via internal pipe" checks
got saner (and somewhat more permissive, which is what Jason had been
after, AFAICT)"
* tag 'pull-work.lseek' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fs: remove no_llseek
fs: check FMODE_LSEEK to control internal pipe splicing
vfio: do not set FMODE_LSEEK flag
dma-buf: remove useless FMODE_LSEEK flag
fs: do not compare against ->llseek
fs: clear or set FMODE_LSEEK based on llseek function
Diffstat (limited to 'fs/open.c')
| -rw-r--r-- | fs/open.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/open.c b/fs/open.c index 2790aac66e58..1177e8d1cf83 100644 --- a/fs/open.c +++ b/fs/open.c @@ -888,6 +888,8 @@ static int do_dentry_open(struct file *f, if ((f->f_mode & FMODE_WRITE) && likely(f->f_op->write || f->f_op->write_iter)) f->f_mode |= FMODE_CAN_WRITE; + if ((f->f_mode & FMODE_LSEEK) && !f->f_op->llseek) + f->f_mode &= ~FMODE_LSEEK; if (f->f_mapping->a_ops && f->f_mapping->a_ops->direct_IO) f->f_mode |= FMODE_CAN_ODIRECT; |