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LinuxKPI: seq_file add "private" versions.

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Add __seq_open_private() and seq_release_private() needed by iwlwifi
debugfs support.

Sponsored by:	The FreeBSD Foundation
MFC after:	3 days
Reviewed by:	emaste
Differential Revision: https://reviews.freebsd.org/D37089
This commit is contained in:
Bjoern A. Zeeb 2022-10-22 18:07:37 +00:00
parent eefd863cba
commit b5a8107590
2 changed files with 36 additions and 0 deletions
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3
sys/compat/linuxkpi/common/include/linux/seq_file.h
View File

@ -69,6 +69,9 @@ struct seq_operations {
ssize_t seq_read(struct linux_file *, char *, size_t, off_t *);
int seq_write(struct seq_file *seq, const void *data, size_t len);
void *__seq_open_private(struct linux_file *, const struct seq_operations *, int);
int seq_release_private(struct inode *, struct linux_file *);
int seq_open(struct linux_file *f, const struct seq_operations *op);
int seq_release(struct inode *inode, struct linux_file *file);

33
sys/compat/linuxkpi/common/src/linux_seq_file.c
View File

@ -130,6 +130,29 @@ seq_open(struct linux_file *f, const struct seq_operations *op)
return (0);
}
void *
__seq_open_private(struct linux_file *f, const struct seq_operations *op, int size)
{
struct seq_file *seq_file;
void *private;
int error;
private = malloc(size, M_LSEQ, M_NOWAIT|M_ZERO);
if (private == NULL)
return (NULL);
error = seq_open(f, op);
if (error < 0) {
free(private, M_LSEQ);
return (NULL);
}
seq_file = (struct seq_file *)f->private_data;
seq_file->private = private;
return (private);
}
int
single_open(struct linux_file *f, int (*show)(struct seq_file *, void *), void *d)
{
@ -166,6 +189,16 @@ seq_release(struct inode *inode __unused, struct linux_file *file)
return (0);
}
int
seq_release_private(struct inode *inode __unused, struct linux_file *f)
{
struct seq_file *seq;
seq = (struct seq_file *)f->private_data;
free(seq->private, M_LSEQ);
return (seq_release(inode, f));
}
int
single_release(struct vnode *v, struct linux_file *f)
{