/src/barebox/include/notifier.h

Source
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __NOTIFIER_H
#define __NOTIFIER_H

#include <linux/list.h>

/*
 * Notifer chains loosely based on the according Linux framework
 */

struct notifier_block {
  int (*notifier_call)(struct notifier_block *, unsigned long, void *);
  struct list_head list;
};

struct notifier_head {
  struct list_head blocks;
};

int notifier_chain_register(struct notifier_head *nh, struct notifier_block *n);
int notifier_chain_unregister(struct notifier_head *nh, struct notifier_block *n);

int notifier_call_chain(struct notifier_head *nh, unsigned long val, void *v);

/*
 * Register a function which is called upon changes of
 * clock frequencies in the system.
 */
int clock_register_client(struct notifier_block *nb);
int clock_unregister_client(struct notifier_block *nb);
int clock_notifier_call_chain(void);

#define NOTIFIER_HEAD(name)         \
  struct notifier_head name = {       \
    .blocks = LIST_HEAD_INIT((name).blocks),  \
  };

#define NOTIFY_DONE   0x0000    /* Don't care */
#define NOTIFY_OK   0x0001    /* Suits me */
#define NOTIFY_STOP_MASK  0x8000    /* Don't call further */
#define NOTIFY_BAD    (NOTIFY_STOP_MASK|0x0002)
            /* Bad/Veto action */
/*
 * Clean way to return from the notifier and stop further calls.
 */
#define NOTIFY_STOP   (NOTIFY_OK|NOTIFY_STOP_MASK)

/* Encapsulate (negative) errno value (in particular, NOTIFY_BAD <=> EPERM). */
static inline int notifier_from_errno(int err)
{
  if (err)
    return NOTIFY_STOP_MASK | (NOTIFY_OK - err);

  return NOTIFY_OK;
}

#endif /* __NOTIFIER_H */

Line	Count	Source
1		/* SPDX-License-Identifier: GPL-2.0-only */
2		#ifndef __NOTIFIER_H
3		#define __NOTIFIER_H
4
5		#include <linux/list.h>
6
7		/*
8		* Notifer chains loosely based on the according Linux framework
9		*/
10
11		struct notifier_block {
12		int (notifier_call)(struct notifier_block , unsigned long, void *);
13		struct list_head list;
14		};
15
16		struct notifier_head {
17		struct list_head blocks;
18		};
19
20		int notifier_chain_register(struct notifier_head nh, struct notifier_block n);
21		int notifier_chain_unregister(struct notifier_head nh, struct notifier_block n);
22
23		int notifier_call_chain(struct notifier_head nh, unsigned long val, void v);
24
25		/*
26		* Register a function which is called upon changes of
27		* clock frequencies in the system.
28		*/
29		int clock_register_client(struct notifier_block *nb);
30		int clock_unregister_client(struct notifier_block *nb);
31		int clock_notifier_call_chain(void);
32
33		#define NOTIFIER_HEAD(name) \
34		struct notifier_head name = { \
35		.blocks = LIST_HEAD_INIT((name).blocks), \
36		};
37
38	0	#define NOTIFY_DONE 0x0000 /* Don't care */
39		#define NOTIFY_OK 0x0001 /* Suits me */
40	0	#define NOTIFY_STOP_MASK 0x8000 /* Don't call further */
41		#define NOTIFY_BAD (NOTIFY_STOP_MASK\|0x0002)
42		/* Bad/Veto action */
43		/*
44		* Clean way to return from the notifier and stop further calls.
45		*/
46		#define NOTIFY_STOP (NOTIFY_OK\|NOTIFY_STOP_MASK)
47
48		/* Encapsulate (negative) errno value (in particular, NOTIFY_BAD <=> EPERM). */
49		static inline int notifier_from_errno(int err)
50	0	{
51	0	if (err)
52	0	return NOTIFY_STOP_MASK \| (NOTIFY_OK - err);
53	0
54	0	return NOTIFY_OK;
55	0	} Unexecuted instantiation: console_common.c:notifier_from_errno Unexecuted instantiation: bootm.c:notifier_from_errno Unexecuted instantiation: memtest.c:notifier_from_errno Unexecuted instantiation: console.c:notifier_from_errno Unexecuted instantiation: console_ctrlc.c:notifier_from_errno Unexecuted instantiation: environment.c:notifier_from_errno Unexecuted instantiation: hush.c:notifier_from_errno Unexecuted instantiation: fastboot.c:notifier_from_errno Unexecuted instantiation: go.c:notifier_from_errno Unexecuted instantiation: bfetch.c:notifier_from_errno Unexecuted instantiation: notifier.c:notifier_from_errno Unexecuted instantiation: show_progress.c:notifier_from_errno Unexecuted instantiation: libfile.c:notifier_from_errno Unexecuted instantiation: fs.c:notifier_from_errno
56
57		#endif /* __NOTIFIER_H */

Coverage Report

Created: 2026-10-13 06:38