Messages in this thread Patch in this message | | | Date | Thu, 10 Jul 2003 00:02:05 -0300 (BRT) | From | Marcelo Tosatti <> | Subject | [PATCH] add seq file helpers from 2.5 (fwd) |
| |
Viro,
I think you are the right person to review that.
Would you do me the favour?
---------- Forwarded message ---------- Date: Wed, 09 Jul 2003 20:16:54 -0400 From: Jeff Muizelaar <kernel@infidigm.net> To: Marcelo Tosatti <marcelo@conectiva.com.br> Subject: [PATCH] add seq file helpers from 2.5
Marcelo,
The attached patch adds the single_* helpers that have been in 2.5 since May 2002, it also adds some missing includes that are in 2.5.
-Jeffdiff -urN linux-2.4.21-bk1/fs/seq_file.c linux-2.4.21-bk1-seq-file-single/fs/seq_file.c --- linux-2.4.21-bk1/fs/seq_file.c 2003-06-13 10:51:37.000000000 -0400 +++ linux-2.4.21-bk1-seq-file-single/fs/seq_file.c 2003-07-09 20:06:25.000000000 -0400 @@ -295,3 +295,45 @@ m->count = m->size; return -1; } + +static void *single_start(struct seq_file *p, loff_t *pos) +{ + return NULL + (*pos == 0); +} + +static void *single_next(struct seq_file *p, void *v, loff_t *pos) +{ + ++*pos; + return NULL; +} + +static void single_stop(struct seq_file *p, void *v) +{ +} + +int single_open(struct file *file, int (*show)(struct seq_file *, void*), void *data) +{ + struct seq_operations *op = kmalloc(sizeof(*op), GFP_KERNEL); + int res = -ENOMEM; + + if (op) { + op->start = single_start; + op->next = single_next; + op->stop = single_stop; + op->show = show; + res = seq_open(file, op); + if (!res) + ((struct seq_file *)file->private_data)->private = data; + else + kfree(op); + } + return res; +} + +int single_release(struct inode *inode, struct file *file) +{ + struct seq_operations *op = ((struct seq_file *)file->private_data)->op; + int res = seq_release(inode, file); + kfree(op); + return res; +} diff -urN linux-2.4.21-bk1/include/linux/seq_file.h linux-2.4.21-bk1-seq-file-single/include/linux/seq_file.h --- linux-2.4.21-bk1/include/linux/seq_file.h 2002-08-02 20:39:45.000000000 -0400 +++ linux-2.4.21-bk1-seq-file-single/include/linux/seq_file.h 2003-07-06 08:57:25.000000000 -0400 @@ -2,7 +2,13 @@ #define _LINUX_SEQ_FILE_H #ifdef __KERNEL__ +#include <linux/types.h> +#include <linux/string.h> +#include <asm/semaphore.h> + struct seq_operations; +struct file; +struct inode; struct seq_file { char *buf; @@ -52,5 +58,8 @@ int seq_printf(struct seq_file *, const char *, ...) __attribute__ ((format (printf,2,3))); + +int single_open(struct file *, int (*)(struct seq_file *, void *), void *); +int single_release(struct inode *, struct file *); #endif #endif
| |