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| author | Al Viro <viro@zeniv.linux.org.uk> | 2008-07-26 16:01:20 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2008-07-26 20:53:45 -0400 |
| commit | 4e1e018ecc6f7bfd10fc75b3ff9715cc8164e0a2 (patch) | |
| tree | 75404b1269b079a327551f76a9b3f941f5b11a77 /fs/open.c | |
| parent | 6c5d0512a091480c9f981162227fdb1c9d70e555 (diff) | |
| download | lwn-4e1e018ecc6f7bfd10fc75b3ff9715cc8164e0a2.tar.gz lwn-4e1e018ecc6f7bfd10fc75b3ff9715cc8164e0a2.zip | |
[PATCH] fix RLIM_NOFILE handling
* dup2() should return -EBADF on exceeded sysctl_nr_open
* dup() should *not* return -EINVAL even if you have rlimit set to 0;
it should get -EMFILE instead.
Check for orig_start exceeding rlimit taken to sys_fcntl().
Failing expand_files() in dup{2,3}() now gets -EMFILE remapped to -EBADF.
Consequently, remaining checks for rlimit are taken to expand_files().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/open.c')
| -rw-r--r-- | fs/open.c | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/fs/open.c b/fs/open.c index 3fe1a6857c75..52647be277a2 100644 --- a/fs/open.c +++ b/fs/open.c @@ -972,7 +972,6 @@ int get_unused_fd_flags(int flags) int fd, error; struct fdtable *fdt; - error = -EMFILE; spin_lock(&files->file_lock); repeat: @@ -980,13 +979,6 @@ repeat: fd = find_next_zero_bit(fdt->open_fds->fds_bits, fdt->max_fds, files->next_fd); - /* - * N.B. For clone tasks sharing a files structure, this test - * will limit the total number of files that can be opened. - */ - if (fd >= current->signal->rlim[RLIMIT_NOFILE].rlim_cur) - goto out; - /* Do we need to expand the fd array or fd set? */ error = expand_files(files, fd); if (error < 0) @@ -997,7 +989,6 @@ repeat: * If we needed to expand the fs array we * might have blocked - try again. */ - error = -EMFILE; goto repeat; } |