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-rw-r--r--fs/locks.c25
1 files changed, 23 insertions, 2 deletions
diff --git a/fs/locks.c b/fs/locks.c
index 5eb259e..09062e3 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1580,7 +1580,8 @@ asmlinkage long sys_flock(unsigned int fd, unsigned int cmd)
cmd &= ~LOCK_NB;
unlock = (cmd == LOCK_UN);
- if (!unlock && !(cmd & LOCK_MAND) && !(filp->f_mode & 3))
+ if (!unlock && !(cmd & LOCK_MAND) &&
+ !(filp->f_mode & (FMODE_READ|FMODE_WRITE)))
goto out_putf;
error = flock_make_lock(filp, &lock, cmd);
@@ -2078,6 +2079,7 @@ int vfs_cancel_lock(struct file *filp, struct file_lock *fl)
EXPORT_SYMBOL_GPL(vfs_cancel_lock);
#ifdef CONFIG_PROC_FS
+#include <linux/proc_fs.h>
#include <linux/seq_file.h>
static void lock_get_status(struct seq_file *f, struct file_lock *fl,
@@ -2183,12 +2185,31 @@ static void locks_stop(struct seq_file *f, void *v)
unlock_kernel();
}
-struct seq_operations locks_seq_operations = {
+static const struct seq_operations locks_seq_operations = {
.start = locks_start,
.next = locks_next,
.stop = locks_stop,
.show = locks_show,
};
+
+static int locks_open(struct inode *inode, struct file *filp)
+{
+ return seq_open(filp, &locks_seq_operations);
+}
+
+static const struct file_operations proc_locks_operations = {
+ .open = locks_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+static int __init proc_locks_init(void)
+{
+ proc_create("locks", 0, NULL, &proc_locks_operations);
+ return 0;
+}
+module_init(proc_locks_init);
#endif
/**
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