diff options
Diffstat (limited to 'fs/file.c')
| -rw-r--r-- | fs/file.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/fs/file.c b/fs/file.c index fd4694e688ab..92197dd9fdc8 100644 --- a/fs/file.c +++ b/fs/file.c @@ -652,6 +652,43 @@ out_unlock: return -EBADF; } +void do_close_on_exec(struct files_struct *files) +{ + unsigned i; + struct fdtable *fdt; + + /* exec unshares first */ + BUG_ON(atomic_read(&files->count) != 1); + spin_lock(&files->file_lock); + for (i = 0; ; i++) { + unsigned long set; + unsigned fd = i * BITS_PER_LONG; + fdt = files_fdtable(files); + if (fd >= fdt->max_fds) + break; + set = fdt->close_on_exec[i]; + if (!set) + continue; + fdt->close_on_exec[i] = 0; + for ( ; set ; fd++, set >>= 1) { + struct file *file; + if (!(set & 1)) + continue; + file = fdt->fd[fd]; + if (!file) + continue; + rcu_assign_pointer(fdt->fd[fd], NULL); + __put_unused_fd(files, fd); + spin_unlock(&files->file_lock); + filp_close(file, files); + cond_resched(); + spin_lock(&files->file_lock); + } + + } + spin_unlock(&files->file_lock); +} + struct file *fget(unsigned int fd) { struct file *file; |