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-rw-r--r--fs/seq_file.c28
1 files changed, 21 insertions, 7 deletions
diff --git a/fs/seq_file.c b/fs/seq_file.c
index 0cbd0494b79..f2bc3dfd0b8 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -9,6 +9,7 @@
#include <linux/export.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
+#include <linux/cred.h>
#include <asm/uaccess.h>
#include <asm/page.h>
@@ -56,6 +57,9 @@ int seq_open(struct file *file, const struct seq_operations *op)
memset(p, 0, sizeof(*p));
mutex_init(&p->lock);
p->op = op;
+#ifdef CONFIG_USER_NS
+ p->user_ns = file->f_cred->user_ns;
+#endif
/*
* Wrappers around seq_open(e.g. swaps_open) need to be
@@ -292,18 +296,18 @@ EXPORT_SYMBOL(seq_read);
* seq_lseek - ->llseek() method for sequential files.
* @file: the file in question
* @offset: new position
- * @origin: 0 for absolute, 1 for relative position
+ * @whence: 0 for absolute, 1 for relative position
*
* Ready-made ->f_op->llseek()
*/
-loff_t seq_lseek(struct file *file, loff_t offset, int origin)
+loff_t seq_lseek(struct file *file, loff_t offset, int whence)
{
struct seq_file *m = file->private_data;
loff_t retval = -EINVAL;
mutex_lock(&m->lock);
m->version = file->f_version;
- switch (origin) {
+ switch (whence) {
case 1:
offset += file->f_pos;
case 0:
@@ -385,15 +389,12 @@ int seq_escape(struct seq_file *m, const char *s, const char *esc)
}
EXPORT_SYMBOL(seq_escape);
-int seq_printf(struct seq_file *m, const char *f, ...)
+int seq_vprintf(struct seq_file *m, const char *f, va_list args)
{
- va_list args;
int len;
if (m->count < m->size) {
- va_start(args, f);
len = vsnprintf(m->buf + m->count, m->size - m->count, f, args);
- va_end(args);
if (m->count + len < m->size) {
m->count += len;
return 0;
@@ -402,6 +403,19 @@ int seq_printf(struct seq_file *m, const char *f, ...)
seq_set_overflow(m);
return -1;
}
+EXPORT_SYMBOL(seq_vprintf);
+
+int seq_printf(struct seq_file *m, const char *f, ...)
+{
+ int ret;
+ va_list args;
+
+ va_start(args, f);
+ ret = seq_vprintf(m, f, args);
+ va_end(args);
+
+ return ret;
+}
EXPORT_SYMBOL(seq_printf);
/**