X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=fs%2Fpipe.c;h=ebafde7d6abab948f9fa3a23e71f39360c757c71;hb=8328258e745b80290534c9ab5bede6cd8340ea75;hp=f8b6bdcb879aa8f4ba9ccfa7340edb087d7e2d57;hpb=1709775828de83b099554176b6d4971ebc772962;p=powerpc.git

diff --git a/fs/pipe.c b/fs/pipe.c
index f8b6bdcb87..ebafde7d6a 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -16,6 +16,7 @@
 #include <linux/uio.h>
 #include <linux/highmem.h>
 #include <linux/pagemap.h>
+#include <linux/audit.h>
 
 #include <asm/uaccess.h>
 #include <asm/ioctls.h>
@@ -207,7 +208,7 @@ int generic_pipe_buf_pin(struct pipe_inode_info *info, struct pipe_buffer *buf)
 	return 0;
 }
 
-static struct pipe_buf_operations anon_pipe_buf_ops = {
+static const struct pipe_buf_operations anon_pipe_buf_ops = {
 	.can_merge = 1,
 	.map = generic_pipe_buf_map,
 	.unmap = generic_pipe_buf_unmap,
@@ -243,7 +244,7 @@ pipe_read(struct kiocb *iocb, const struct iovec *_iov,
 		if (bufs) {
 			int curbuf = pipe->curbuf;
 			struct pipe_buffer *buf = pipe->bufs + curbuf;
-			struct pipe_buf_operations *ops = buf->ops;
+			const struct pipe_buf_operations *ops = buf->ops;
 			void *addr;
 			size_t chars = buf->len;
 			int error, atomic;
@@ -365,7 +366,7 @@ pipe_write(struct kiocb *iocb, const struct iovec *_iov,
 		int lastbuf = (pipe->curbuf + pipe->nrbufs - 1) &
 							(PIPE_BUFFERS-1);
 		struct pipe_buffer *buf = pipe->bufs + lastbuf;
-		struct pipe_buf_operations *ops = buf->ops;
+		const struct pipe_buf_operations *ops = buf->ops;
 		int offset = buf->offset + buf->len;
 
 		if (ops->can_merge && offset + chars <= PAGE_SIZE) {
@@ -756,7 +757,7 @@ const struct file_operations rdwr_fifo_fops = {
 	.fasync		= pipe_rdwr_fasync,
 };
 
-static struct file_operations read_pipe_fops = {
+static const struct file_operations read_pipe_fops = {
 	.llseek		= no_llseek,
 	.read		= do_sync_read,
 	.aio_read	= pipe_read,
@@ -768,7 +769,7 @@ static struct file_operations read_pipe_fops = {
 	.fasync		= pipe_read_fasync,
 };
 
-static struct file_operations write_pipe_fops = {
+static const struct file_operations write_pipe_fops = {
 	.llseek		= no_llseek,
 	.read		= bad_pipe_r,
 	.write		= do_sync_write,
@@ -780,7 +781,7 @@ static struct file_operations write_pipe_fops = {
 	.fasync		= pipe_write_fasync,
 };
 
-static struct file_operations rdwr_pipe_fops = {
+static const struct file_operations rdwr_pipe_fops = {
 	.llseek		= no_llseek,
 	.read		= do_sync_read,
 	.aio_read	= pipe_read,
@@ -935,8 +936,9 @@ struct file *create_write_pipe(void)
 
 void free_write_pipe(struct file *f)
 {
-	mntput(f->f_path.mnt);
+	free_pipe_info(f->f_dentry->d_inode);
 	dput(f->f_path.dentry);
+	mntput(f->f_path.mnt);
 	put_filp(f);
 }
 
@@ -984,6 +986,10 @@ int do_pipe(int *fd)
 		goto err_fdr;
 	fdw = error;
 
+	error = audit_fd_pair(fdr, fdw);
+	if (error < 0)
+		goto err_fdw;
+
 	fd_install(fdr, fr);
 	fd_install(fdw, fw);
 	fd[0] = fdr;
@@ -991,9 +997,13 @@ int do_pipe(int *fd)
 
 	return 0;
 
+ err_fdw:
+	put_unused_fd(fdw);
  err_fdr:
 	put_unused_fd(fdr);
  err_read_pipe:
+	dput(fr->f_dentry);
+	mntput(fr->f_vfsmnt);
 	put_filp(fr);
  err_write_pipe:
 	free_write_pipe(fw);