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https://github.com/ibm-s390-linux/s390-tools.git
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8b3cc6e4c1
Add basic checking when reading udev rules and print a warning when an
invalid udev rule file is found. This addresses the current inconsistent
behavior:
- CCW devices: invalid udev rules are considered valid
- CCW group devices: invalid udev rules are silently ignored
- zFCP LUNs: invalid rules cause chzdev/lszdev to silently terminate
with non-zero exit code
Checks include a test for empty or truncated rule files that might be
the result of an interrupted chzdev operation, or a file system or I/O
error.
Note: The recommended way to correct invalid udev rules is to either
remove the offending rules file, or to repeat the associated persistent
configuration step.
Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Reported-by: Steffen Maier <maier@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
/*
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* zdev - Modify and display the persistent configuration of devices
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*
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* Copyright IBM Corp. 2016, 2017
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#ifndef UDEV_H
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#define UDEV_H
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#include "lib/util_list.h"
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#include "exit_code.h"
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struct attrib;
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struct setting_list;
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extern int udev_need_settle;
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extern int udev_no_settle;
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/* Single key-operator-value entry in a udev rule line.*/
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struct udev_entry_node {
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struct util_list_node node;
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char *key;
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char *op;
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char *value;
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};
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/* Single udev line in a udev rule file. */
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struct udev_line_node {
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struct util_list_node node;
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struct util_list entries;
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char *line;
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};
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/* Udev rule file. */
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struct udev_file {
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struct util_list lines;
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};
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exit_code_t udev_read_file(const char *, struct udev_file **);
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bool udev_file_is_empty(struct udev_file *file);
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void udev_free_file(struct udev_file *);
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void udev_file_print(struct udev_file *);
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void udev_get_device_ids(const char *type, struct util_list *list,
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bool autoconf);
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exit_code_t udev_remove_rule(const char *type, const char *id, bool autoconf);
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void udev_settle(void);
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void udev_add_internal_from_entry(struct setting_list *list,
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struct udev_entry_node *entry,
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struct attrib **attribs);
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#endif /* UDEV_H */
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