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authorJiri Slaby <jslaby@suse.cz>2017-06-13 13:35:50 +0200
committerJeff Layton <jlayton@redhat.com>2017-06-14 08:46:36 -0400
commit393cc3f51135ea2520521f776ef3afdf3395c797 (patch)
tree39e155523cb90f73b234ebf1bf3a580ba0ab1e36
parent94073ad77fff221b5e66b8b9863a546ba212d6a3 (diff)
downloadop-kernel-dev-393cc3f51135ea2520521f776ef3afdf3395c797.zip
op-kernel-dev-393cc3f51135ea2520521f776ef3afdf3395c797.tar.gz
fs/fcntl: f_setown, allow returning error
Allow f_setown to return an error value. We will fail in the next patch with EINVAL for bad input to f_setown, so tile the path for the later patch. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Reviewed-by: Jeff Layton <jlayton@redhat.com> Cc: Jeff Layton <jlayton@poochiereds.net> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Signed-off-by: Jeff Layton <jlayton@redhat.com>
-rw-r--r--fs/fcntl.c7
-rw-r--r--include/linux/fs.h2
-rw-r--r--net/socket.c3
3 files changed, 6 insertions, 6 deletions
diff --git a/fs/fcntl.c b/fs/fcntl.c
index bbf8034..313eba8 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -109,7 +109,7 @@ void __f_setown(struct file *filp, struct pid *pid, enum pid_type type,
}
EXPORT_SYMBOL(__f_setown);
-void f_setown(struct file *filp, unsigned long arg, int force)
+int f_setown(struct file *filp, unsigned long arg, int force)
{
enum pid_type type;
struct pid *pid;
@@ -123,6 +123,8 @@ void f_setown(struct file *filp, unsigned long arg, int force)
pid = find_vpid(who);
__f_setown(filp, pid, type, force);
rcu_read_unlock();
+
+ return 0;
}
EXPORT_SYMBOL(f_setown);
@@ -305,8 +307,7 @@ static long do_fcntl(int fd, unsigned int cmd, unsigned long arg,
force_successful_syscall_return();
break;
case F_SETOWN:
- f_setown(filp, arg, 1);
- err = 0;
+ err = f_setown(filp, arg, 1);
break;
case F_GETOWN_EX:
err = f_getown_ex(filp, arg);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index aa4affb..25ee1ff 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1249,7 +1249,7 @@ extern void fasync_free(struct fasync_struct *);
extern void kill_fasync(struct fasync_struct **, int, int);
extern void __f_setown(struct file *filp, struct pid *, enum pid_type, int force);
-extern void f_setown(struct file *filp, unsigned long arg, int force);
+extern int f_setown(struct file *filp, unsigned long arg, int force);
extern void f_delown(struct file *filp);
extern pid_t f_getown(struct file *filp);
extern int send_sigurg(struct fown_struct *fown);
diff --git a/net/socket.c b/net/socket.c
index c2564eb..a30a1e32 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -950,8 +950,7 @@ static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg)
err = -EFAULT;
if (get_user(pid, (int __user *)argp))
break;
- f_setown(sock->file, pid, 1);
- err = 0;
+ err = f_setown(sock->file, pid, 1);
break;
case FIOGETOWN:
case SIOCGPGRP:
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