75 lines
1.6 KiB
C
75 lines
1.6 KiB
C
#include "ksudoku.h"
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#define KSTUDY_VERSION "0.1"
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#define KSTUDY_DESC "Kernel Sudoku Module"
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static MATRIX_ATTR_RO(is_valid);
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static MATRIX_ATTR_RO(is_solved);
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/**
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* sudoku_create_file - create sysfs attribute file for the given sudoku.
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* @sudoku: sudoku
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* @attr: sudoku attribute descriptor.
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*/
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int sudoku_create_file(struct sudoku *s,
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const struct matrix_attribute *attr)
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{
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int error = 0;
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if (s) {
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WARN(((attr->attr.mode & S_IWUGO) && !attr->store),
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"Attribute %s: write permission without 'store'\n",
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attr->attr.name);
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WARN(((attr->attr.mode & S_IRUGO) && !attr->show),
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"Attribute %s: read permission without 'show'\n",
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attr->attr.name);
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error = sysfs_create_file(&s->kobj, &attr->attr);
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}
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return error;
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}
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EXPORT_SYMBOL_GPL(sudoku_create_file);
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static ssize_t is_valid_show(struct kobject *kobj, struct attribute *attr,
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char *buf)
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{
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struct sudoku_attribute *s_attr = to_sudoku_attr(attr);
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struct sudoku *s = to_sudoku(kobj);
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ssize_t ret = -EIO;
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if (s_attr->show)
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ret = s_attr->show(s, s_attr, buf);
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if (ret >= (ssize_t)PAGE_SIZE) {
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printk("is_valid_show: %pS returned bad count\n",
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s_attr->show);
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}
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return ret;
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}
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static int kstudy_init(void)
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{
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printk(KERN_ALERT "Init ksudoku.\n");
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return 0;
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}
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static void kstudy_exit(void)
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{
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printk(KERN_ALERT "Exit ksudoku.\n");
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}
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MODULE_AUTHOR("Sameer Rahmani <lxsameer@gnu.org>");
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MODULE_DESCRIPTION(KSTUDY_DESC);
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MODULE_VERSION(KSTUDY_VERSION);
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MODULE_LICENSE("GPL");
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module_init(kstudy_init);
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module_exit(kstudy_exit);
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