Differential D35883 Diff 109621 sys/compat/linuxkpi/common/src/linux_seq_file.c

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sys/compat/linuxkpi/common/src/linux_seq_file.c

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MALLOC_DEFINE(M_LSEQ, "seq_file", "seq_file");		MALLOC_DEFINE(M_LSEQ, "seq_file", "seq_file");

ssize_t		ssize_t
seq_read(struct linux_file f, char ubuf, size_t size, off_t *ppos)		seq_read(struct linux_file f, char ubuf, size_t size, off_t *ppos)
{		{
struct seq_file *m = f->private_data;		struct seq_file *m = f->private_data;
void *p;		void *p;
int rc;		int rc;
off_t pos = 0;

p = m->op->start(m, &pos);		p = m->op->start(m, ppos);
		markjUnsubmitted Done Inline Actions Is this a bug fix? markj: Is this a bug fix?
		jfreeAuthorUnsubmitted Done Inline Actions Yes. jfree: Yes.
rc = m->op->show(m, p);		rc = m->op->show(m, p);
if (rc)		if (rc)
return (rc);		return (rc);
return (size);		return (size);
}		}

int		int
seq_write(struct seq_file seq, const void data, size_t len)		seq_write(struct seq_file seq, const void data, size_t len)
Show All 34 Lines
{		{
}		}

int		int
seq_open(struct linux_file f, const struct seq_operations op)		seq_open(struct linux_file f, const struct seq_operations op)
{		{
struct seq_file *p;		struct seq_file *p;

if (f->private_data != NULL)
log(LOG_WARNING, "%s private_data not NULL", __func__);

if ((p = malloc(sizeof(*p), M_LSEQ, M_NOWAIT\|M_ZERO)) == NULL)		if ((p = malloc(sizeof(*p), M_LSEQ, M_NOWAIT\|M_ZERO)) == NULL)
return (-ENOMEM);		return (-ENOMEM);

f->private_data = p;		/*
		* This seq_file's ->buf is passed in through f->private_data.
		* A clean seq_file implementation is needed to remove the
		* FreeBSD sbuf dependency.
		*/
		if (f->private_data != NULL)
		p->buf = (struct sbuf *) f->private_data;

p->op = op;		p->op = op;
p->file = f;		p->file = f;
		f->private_data = (void *) p;
return (0);		return (0);
}		}

int		int
single_open(struct linux_file f, int (show)(struct seq_file , void ), void *d)		single_open(struct linux_file f, int (show)(struct seq_file , void ), void *d)
{		{
struct seq_operations *op;		struct seq_operations *op;
int rc = -ENOMEM;		int rc = -ENOMEM;
Show All 33 Lines	single_release(struct vnode v, struct linux_file f)
/* be NULL safe */		/* be NULL safe */
if ((m = f->private_data) == NULL)		if ((m = f->private_data) == NULL)
return (0);		return (0);

op = m->op;		op = m->op;
rc = seq_release(v, f);		rc = seq_release(v, f);
free(__DECONST(void *, op), M_LSEQ);		free(__DECONST(void *, op), M_LSEQ);
return (rc);		return (rc);
		}

		void
		seq_vprintf(struct seq_file m, const char fmt, va_list args)
		{
		sbuf_vprintf(m->buf, fmt, args);
		return;
		}

		void
		seq_printf(struct seq_file m, const char fmt, ...)
		{
		va_list args;

		va_start(args, fmt);
		seq_vprintf(m, fmt, args);
		va_end(args);

		return;
}		}