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util/sysfs.h
46 строк
2 KB
Dan Williams
util: Implement common bind/unbind helpers
27 янв 2022, 00:37
27 янв 2022, 00:37
e31fc77
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/* SPDX-License-Identifier: LGPL-2.1 */ /* Copyright (C) 2014-2020, Intel Corporation. All rights reserved. */ #ifndef __UTIL_SYSFS_H__ #define __UTIL_SYSFS_H__ #include <string.h> typedef void *(*add_dev_fn)(void *parent, int id, const char *dev_path); #define SYSFS_ATTR_SIZE 1024 struct log_ctx; int __sysfs_read_attr(struct log_ctx *ctx, const char *path, char *buf); int __sysfs_write_attr(struct log_ctx *ctx, const char *path, const char *buf); int __sysfs_write_attr_quiet(struct log_ctx *ctx, const char *path, const char *buf); int __sysfs_device_parse(struct log_ctx *ctx, const char *base_path, const char *dev_name, void *parent, add_dev_fn add_dev); #define sysfs_read_attr(c, p, b) __sysfs_read_attr(&(c)->ctx, (p), (b)) #define sysfs_write_attr(c, p, b) __sysfs_write_attr(&(c)->ctx, (p), (b)) #define sysfs_write_attr_quiet(c, p, b) __sysfs_write_attr_quiet(&(c)->ctx, (p), (b)) #define sysfs_device_parse(c, b, d, p, fn) __sysfs_device_parse(&(c)->ctx, \ (b), (d), (p), (fn)) static inline const char *devpath_to_devname(const char *devpath) { return strrchr(devpath, '/') + 1; } struct kmod_ctx; struct kmod_module; struct kmod_module *__util_modalias_to_module(struct kmod_ctx *kmod_ctx, const char *alias, struct log_ctx *log); #define util_modalias_to_module(ctx, buf) \ __util_modalias_to_module((ctx)->kmod_ctx, buf, &(ctx)->ctx) int __util_bind(const char *devname, struct kmod_module *module, const char *bus, struct log_ctx *ctx); #define util_bind(n, m, b, c) __util_bind(n, m, b, &(c)->ctx) int __util_unbind(const char *devpath, struct log_ctx *ctx); #define util_unbind(p, c) __util_unbind(p, &(c)->ctx) #endif /* __UTIL_SYSFS_H__ */