c0c1ffea58
The sysfs nodes can change from devices to devices for a particular class of peripheral. Some of them even change after suspend/resume, e.g. rfkill for USB bluetooth adapters. This patch adds to the way how ueventd rules with wildcard are handled. In addition to matching the prefix with a trailing wildcard, now rules can have wildcard anywhere in the rule. The wildcard matching is implemented using fnmatch(), where its matching is simliar to shell pathname expansion. It suits this particular usage model well. To avoid abuse, the number of slashes has to match between path name and the rule. For example, instead of creating a rule to match: /sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.3/2-1.3:1.0/bluetooth/hci0/rfkill* , this would suffice: /sys/devices/pci0000:00/0000:00:1d.0/*/*/*/*/bluetooth/hci0/rfkill* The prefix matching behavior is retained, such that those rules do not have to pay for processing penalty with fnmatch(). Change-Id: I3ae6a39c838f6d12801cb71958e481b016f731f5 Signed-off-by: Daniel Leung <daniel.leung@intel.com>
29 lines
1 KiB
C
29 lines
1 KiB
C
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _INIT_DEVICES_H
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#define _INIT_DEVICES_H
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#include <sys/stat.h>
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extern void handle_device_fd();
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extern void device_init(void);
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extern int add_dev_perms(const char *name, const char *attr,
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mode_t perm, unsigned int uid,
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unsigned int gid, unsigned short prefix,
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unsigned short wildcard);
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int get_device_fd();
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#endif /* _INIT_DEVICES_H */
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