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authorAl Viro <viro@zeniv.linux.org.uk>2008-07-30 04:13:04 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2008-08-01 11:25:23 -0400
commit1027abe8827b47f7e9c4ed6514fde3d44f79963c (patch)
treebe6aba7e46176534cc71622de53a8bcbf28a06c4 /fs/open.c
parenta1bc6eb4b499ae67ada9a01660010580b6569403 (diff)
downloadop-kernel-dev-1027abe8827b47f7e9c4ed6514fde3d44f79963c.zip
op-kernel-dev-1027abe8827b47f7e9c4ed6514fde3d44f79963c.tar.gz
[PATCH] merge locate_fd() and get_unused_fd()
New primitive: alloc_fd(start, flags). get_unused_fd() and get_unused_fd_flags() become wrappers on top of it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/open.c')
-rw-r--r--fs/open.c56
1 files changed, 0 insertions, 56 deletions
diff --git a/fs/open.c b/fs/open.c
index 52647be..07da935 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -963,62 +963,6 @@ struct file *dentry_open(struct dentry *dentry, struct vfsmount *mnt, int flags)
}
EXPORT_SYMBOL(dentry_open);
-/*
- * Find an empty file descriptor entry, and mark it busy.
- */
-int get_unused_fd_flags(int flags)
-{
- struct files_struct * files = current->files;
- int fd, error;
- struct fdtable *fdt;
-
- spin_lock(&files->file_lock);
-
-repeat:
- fdt = files_fdtable(files);
- fd = find_next_zero_bit(fdt->open_fds->fds_bits, fdt->max_fds,
- files->next_fd);
-
- /* Do we need to expand the fd array or fd set? */
- error = expand_files(files, fd);
- if (error < 0)
- goto out;
-
- if (error) {
- /*
- * If we needed to expand the fs array we
- * might have blocked - try again.
- */
- goto repeat;
- }
-
- FD_SET(fd, fdt->open_fds);
- if (flags & O_CLOEXEC)
- FD_SET(fd, fdt->close_on_exec);
- else
- FD_CLR(fd, fdt->close_on_exec);
- files->next_fd = fd + 1;
-#if 1
- /* Sanity check */
- if (fdt->fd[fd] != NULL) {
- printk(KERN_WARNING "get_unused_fd: slot %d not NULL!\n", fd);
- fdt->fd[fd] = NULL;
- }
-#endif
- error = fd;
-
-out:
- spin_unlock(&files->file_lock);
- return error;
-}
-
-int get_unused_fd(void)
-{
- return get_unused_fd_flags(0);
-}
-
-EXPORT_SYMBOL(get_unused_fd);
-
static void __put_unused_fd(struct files_struct *files, unsigned int fd)
{
struct fdtable *fdt = files_fdtable(files);
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