7a182f1034
This partially reverts 25de7aa7b9
.
Fixes #14473.
2394 lines
94 KiB
C
2394 lines
94 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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#include <ctype.h>
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#include "alloc-util.h"
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#include "architecture.h"
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#include "conf-files.h"
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#include "def.h"
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#include "device-util.h"
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#include "dirent-util.h"
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#include "escape.h"
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#include "fd-util.h"
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#include "fileio.h"
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#include "format-util.h"
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#include "fs-util.h"
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#include "glob-util.h"
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#include "libudev-util.h"
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#include "list.h"
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#include "mkdir.h"
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#include "nulstr-util.h"
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#include "parse-util.h"
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#include "path-util.h"
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#include "proc-cmdline.h"
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#include "stat-util.h"
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#include "strv.h"
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#include "strxcpyx.h"
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#include "sysctl-util.h"
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#include "udev-builtin.h"
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#include "udev-event.h"
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#include "udev-rules.h"
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#include "user-util.h"
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#include "virt.h"
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#define RULES_DIRS (const char* const*) CONF_PATHS_STRV("udev/rules.d")
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typedef enum {
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OP_MATCH, /* == */
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OP_NOMATCH, /* != */
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OP_ADD, /* += */
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OP_REMOVE, /* -= */
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OP_ASSIGN, /* = */
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OP_ASSIGN_FINAL, /* := */
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_OP_TYPE_MAX,
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_OP_TYPE_INVALID = -1
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} UdevRuleOperatorType;
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typedef enum {
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MATCH_TYPE_EMPTY, /* empty string */
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MATCH_TYPE_PLAIN, /* no special characters */
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MATCH_TYPE_PLAIN_WITH_EMPTY, /* no special characters with empty string, e.g., "|foo" */
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MATCH_TYPE_GLOB, /* shell globs ?,*,[] */
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MATCH_TYPE_GLOB_WITH_EMPTY, /* shell globs ?,*,[] with empty string, e.g., "|foo*" */
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MATCH_TYPE_SUBSYSTEM, /* "subsystem", "bus", or "class" */
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_MATCH_TYPE_MAX,
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_MATCH_TYPE_INVALID = -1
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} UdevRuleMatchType;
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typedef enum {
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SUBST_TYPE_PLAIN, /* no substitution */
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SUBST_TYPE_FORMAT, /* % or $ */
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SUBST_TYPE_SUBSYS, /* "[<SUBSYSTEM>/<KERNEL>]<attribute>" format */
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_SUBST_TYPE_MAX,
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_SUBST_TYPE_INVALID = -1
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} UdevRuleSubstituteType;
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typedef enum {
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/* lvalues which take match or nomatch operator */
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TK_M_ACTION, /* string, device_get_action() */
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TK_M_DEVPATH, /* path, sd_device_get_devpath() */
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TK_M_KERNEL, /* string, sd_device_get_sysname() */
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TK_M_DEVLINK, /* strv, sd_device_get_devlink_first(), sd_device_get_devlink_next() */
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TK_M_NAME, /* string, name of network interface */
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TK_M_ENV, /* string, device property, takes key through attribute */
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TK_M_CONST, /* string, system-specific hard-coded constant */
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TK_M_TAG, /* strv, sd_device_get_tag_first(), sd_device_get_tag_next() */
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TK_M_SUBSYSTEM, /* string, sd_device_get_subsystem() */
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TK_M_DRIVER, /* string, sd_device_get_driver() */
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TK_M_ATTR, /* string, takes filename through attribute, sd_device_get_sysattr_value(), util_resolve_subsys_kernel(), etc. */
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TK_M_SYSCTL, /* string, takes kernel parameter through attribute */
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/* matches parent paramters */
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TK_M_PARENTS_KERNEL, /* string */
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TK_M_PARENTS_SUBSYSTEM, /* string */
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TK_M_PARENTS_DRIVER, /* string */
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TK_M_PARENTS_ATTR, /* string */
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TK_M_PARENTS_TAG, /* strv */
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TK_M_TEST, /* path, optionally mode_t can be specified by attribute, test the existence of a file */
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TK_M_PROGRAM, /* string, execute a program */
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TK_M_IMPORT_FILE, /* path */
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TK_M_IMPORT_PROGRAM, /* string, import properties from the result of program */
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TK_M_IMPORT_BUILTIN, /* string, import properties from the result of built-in command */
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TK_M_IMPORT_DB, /* string, import properties from database */
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TK_M_IMPORT_CMDLINE, /* string, kernel command line */
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TK_M_IMPORT_PARENT, /* string, parent property */
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TK_M_RESULT, /* string, result of TK_M_PROGRAM */
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#define _TK_M_MAX (TK_M_RESULT + 1)
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#define _TK_A_MIN _TK_M_MAX
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/* lvalues which take one of assign operators */
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TK_A_OPTIONS_STRING_ESCAPE_NONE, /* no argument */
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TK_A_OPTIONS_STRING_ESCAPE_REPLACE, /* no argument */
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TK_A_OPTIONS_DB_PERSIST, /* no argument */
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TK_A_OPTIONS_INOTIFY_WATCH, /* boolean */
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TK_A_OPTIONS_DEVLINK_PRIORITY, /* int */
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TK_A_OWNER, /* user name */
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TK_A_GROUP, /* group name */
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TK_A_MODE, /* mode string */
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TK_A_OWNER_ID, /* uid_t */
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TK_A_GROUP_ID, /* gid_t */
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TK_A_MODE_ID, /* mode_t */
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TK_A_TAG, /* string */
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TK_A_OPTIONS_STATIC_NODE, /* device path, /dev/... */
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TK_A_SECLABEL, /* string with attribute */
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TK_A_ENV, /* string with attribute */
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TK_A_NAME, /* ifname */
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TK_A_DEVLINK, /* string */
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TK_A_ATTR, /* string with attribute */
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TK_A_SYSCTL, /* string with attribute */
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TK_A_RUN_BUILTIN, /* string */
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TK_A_RUN_PROGRAM, /* string */
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_TK_TYPE_MAX,
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_TK_TYPE_INVALID = -1,
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} UdevRuleTokenType;
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typedef enum {
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LINE_HAS_NAME = 1 << 0, /* has NAME= */
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LINE_HAS_DEVLINK = 1 << 1, /* has SYMLINK=, OWNER=, GROUP= or MODE= */
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LINE_HAS_STATIC_NODE = 1 << 2, /* has OPTIONS=static_node */
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LINE_HAS_GOTO = 1 << 3, /* has GOTO= */
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LINE_HAS_LABEL = 1 << 4, /* has LABEL= */
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LINE_UPDATE_SOMETHING = 1 << 5, /* has other TK_A_* or TK_M_IMPORT tokens */
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} UdevRuleLineType;
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typedef struct UdevRuleFile UdevRuleFile;
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typedef struct UdevRuleLine UdevRuleLine;
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typedef struct UdevRuleToken UdevRuleToken;
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struct UdevRuleToken {
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UdevRuleTokenType type:8;
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UdevRuleOperatorType op:8;
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UdevRuleMatchType match_type:8;
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UdevRuleSubstituteType attr_subst_type:7;
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bool attr_match_remove_trailing_whitespace:1;
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const char *value;
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void *data;
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LIST_FIELDS(UdevRuleToken, tokens);
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};
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struct UdevRuleLine {
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char *line;
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unsigned line_number;
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UdevRuleLineType type;
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const char *label;
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const char *goto_label;
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UdevRuleLine *goto_line;
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UdevRuleFile *rule_file;
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UdevRuleToken *current_token;
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LIST_HEAD(UdevRuleToken, tokens);
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LIST_FIELDS(UdevRuleLine, rule_lines);
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};
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struct UdevRuleFile {
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char *filename;
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UdevRuleLine *current_line;
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LIST_HEAD(UdevRuleLine, rule_lines);
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LIST_FIELDS(UdevRuleFile, rule_files);
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};
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struct UdevRules {
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usec_t dirs_ts_usec;
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ResolveNameTiming resolve_name_timing;
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Hashmap *known_users;
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Hashmap *known_groups;
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UdevRuleFile *current_file;
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LIST_HEAD(UdevRuleFile, rule_files);
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};
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/*** Logging helpers ***/
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#define log_rule_full(device, rules, level, error, fmt, ...) \
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({ \
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UdevRules *_r = (rules); \
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UdevRuleFile *_f = _r ? _r->current_file : NULL; \
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UdevRuleLine *_l = _f ? _f->current_line : NULL; \
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const char *_n = _f ? _f->filename : NULL; \
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\
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log_device_full(device, level, error, "%s:%u " fmt, \
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strna(_n), _l ? _l->line_number : 0, \
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##__VA_ARGS__); \
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})
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#define log_rule_debug(device, rules, ...) log_rule_full(device, rules, LOG_DEBUG, 0, ##__VA_ARGS__)
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#define log_rule_info(device, rules, ...) log_rule_full(device, rules, LOG_INFO, 0, ##__VA_ARGS__)
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#define log_rule_notice(device, rules, ...) log_rule_full(device, rules, LOG_NOTICE, 0, ##__VA_ARGS__)
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#define log_rule_warning(device, rules, ...) log_rule_full(device, rules, LOG_WARNING, 0, ##__VA_ARGS__)
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#define log_rule_error(device, rules, ...) log_rule_full(device, rules, LOG_ERR, 0, ##__VA_ARGS__)
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#define log_rule_debug_errno(device, rules, error, ...) log_rule_full(device, rules, LOG_DEBUG, error, ##__VA_ARGS__)
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#define log_rule_info_errno(device, rules, error, ...) log_rule_full(device, rules, LOG_INFO, error, ##__VA_ARGS__)
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#define log_rule_notice_errno(device, rules, error, ...) log_rule_full(device, rules, LOG_NOTICE, error, ##__VA_ARGS__)
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#define log_rule_warning_errno(device, rules, error, ...) log_rule_full(device, rules, LOG_WARNING, error, ##__VA_ARGS__)
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#define log_rule_error_errno(device, rules, error, ...) log_rule_full(device, rules, LOG_ERR, error, ##__VA_ARGS__)
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#define log_token_full(rules, ...) log_rule_full(NULL, rules, ##__VA_ARGS__)
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#define log_token_debug(rules, ...) log_token_full(rules, LOG_DEBUG, 0, ##__VA_ARGS__)
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#define log_token_info(rules, ...) log_token_full(rules, LOG_INFO, 0, ##__VA_ARGS__)
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#define log_token_notice(rules, ...) log_token_full(rules, LOG_NOTICE, 0, ##__VA_ARGS__)
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#define log_token_warning(rules, ...) log_token_full(rules, LOG_WARNING, 0, ##__VA_ARGS__)
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#define log_token_error(rules, ...) log_token_full(rules, LOG_ERR, 0, ##__VA_ARGS__)
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#define log_token_debug_errno(rules, error, ...) log_token_full(rules, LOG_DEBUG, error, ##__VA_ARGS__)
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#define log_token_info_errno(rules, error, ...) log_token_full(rules, LOG_INFO, error, ##__VA_ARGS__)
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#define log_token_notice_errno(rules, error, ...) log_token_full(rules, LOG_NOTICE, error, ##__VA_ARGS__)
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#define log_token_warning_errno(rules, error, ...) log_token_full(rules, LOG_WARNING, error, ##__VA_ARGS__)
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#define log_token_error_errno(rules, error, ...) log_token_full(rules, LOG_ERR, error, ##__VA_ARGS__)
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#define _log_token_invalid(rules, key, type) \
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log_token_error_errno(rules, SYNTHETIC_ERRNO(EINVAL), \
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"Invalid %s for %s.", type, key)
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#define log_token_invalid_op(rules, key) _log_token_invalid(rules, key, "operator")
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#define log_token_invalid_attr(rules, key) _log_token_invalid(rules, key, "attribute")
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#define log_token_invalid_attr_format(rules, key, attr, offset, hint) \
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log_token_error_errno(rules, SYNTHETIC_ERRNO(EINVAL), \
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"Invalid attribute \"%s\" for %s (char %zu: %s), ignoring, but please fix it.", \
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attr, key, offset, hint)
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#define log_token_invalid_value(rules, key, value, offset, hint) \
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log_token_error_errno(rules, SYNTHETIC_ERRNO(EINVAL), \
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"Invalid value \"%s\" for %s (char %zu: %s), ignoring, but please fix it.", \
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value, key, offset, hint)
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static void log_unknown_owner(sd_device *dev, UdevRules *rules, int error, const char *entity, const char *name) {
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if (IN_SET(abs(error), ENOENT, ESRCH))
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log_rule_error(dev, rules, "Unknown %s '%s', ignoring", entity, name);
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else
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log_rule_error_errno(dev, rules, error, "Failed to resolve %s '%s', ignoring: %m", entity, name);
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}
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/*** Other functions ***/
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static void udev_rule_token_free(UdevRuleToken *token) {
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free(token);
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}
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static void udev_rule_line_clear_tokens(UdevRuleLine *rule_line) {
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UdevRuleToken *i, *next;
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assert(rule_line);
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LIST_FOREACH_SAFE(tokens, i, next, rule_line->tokens)
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udev_rule_token_free(i);
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rule_line->tokens = NULL;
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}
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static void udev_rule_line_free(UdevRuleLine *rule_line) {
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if (!rule_line)
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return;
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udev_rule_line_clear_tokens(rule_line);
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if (rule_line->rule_file) {
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if (rule_line->rule_file->current_line == rule_line)
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rule_line->rule_file->current_line = rule_line->rule_lines_prev;
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LIST_REMOVE(rule_lines, rule_line->rule_file->rule_lines, rule_line);
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}
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free(rule_line->line);
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free(rule_line);
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}
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DEFINE_TRIVIAL_CLEANUP_FUNC(UdevRuleLine*, udev_rule_line_free);
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static void udev_rule_file_free(UdevRuleFile *rule_file) {
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UdevRuleLine *i, *next;
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if (!rule_file)
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return;
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LIST_FOREACH_SAFE(rule_lines, i, next, rule_file->rule_lines)
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udev_rule_line_free(i);
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free(rule_file->filename);
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free(rule_file);
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}
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UdevRules *udev_rules_free(UdevRules *rules) {
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UdevRuleFile *i, *next;
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if (!rules)
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return NULL;
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LIST_FOREACH_SAFE(rule_files, i, next, rules->rule_files)
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udev_rule_file_free(i);
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hashmap_free_free_key(rules->known_users);
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hashmap_free_free_key(rules->known_groups);
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return mfree(rules);
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}
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static int rule_resolve_user(UdevRules *rules, const char *name, uid_t *ret) {
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_cleanup_free_ char *n = NULL;
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uid_t uid;
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void *val;
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int r;
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assert(rules);
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assert(name);
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val = hashmap_get(rules->known_users, name);
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if (val) {
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*ret = PTR_TO_UID(val);
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return 0;
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}
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r = get_user_creds(&name, &uid, NULL, NULL, NULL, USER_CREDS_ALLOW_MISSING);
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if (r < 0) {
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log_unknown_owner(NULL, rules, r, "user", name);
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*ret = UID_INVALID;
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return 0;
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}
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n = strdup(name);
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if (!n)
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return -ENOMEM;
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r = hashmap_ensure_allocated(&rules->known_users, &string_hash_ops);
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if (r < 0)
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return r;
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r = hashmap_put(rules->known_users, n, UID_TO_PTR(uid));
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if (r < 0)
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return r;
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TAKE_PTR(n);
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*ret = uid;
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return 0;
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}
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static int rule_resolve_group(UdevRules *rules, const char *name, gid_t *ret) {
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_cleanup_free_ char *n = NULL;
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gid_t gid;
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void *val;
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int r;
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assert(rules);
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assert(name);
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val = hashmap_get(rules->known_groups, name);
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if (val) {
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*ret = PTR_TO_GID(val);
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return 0;
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}
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r = get_group_creds(&name, &gid, USER_CREDS_ALLOW_MISSING);
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if (r < 0) {
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log_unknown_owner(NULL, rules, r, "group", name);
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*ret = GID_INVALID;
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return 0;
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}
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n = strdup(name);
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if (!n)
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return -ENOMEM;
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r = hashmap_ensure_allocated(&rules->known_groups, &string_hash_ops);
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if (r < 0)
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return r;
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r = hashmap_put(rules->known_groups, n, GID_TO_PTR(gid));
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if (r < 0)
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return r;
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TAKE_PTR(n);
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*ret = gid;
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return 0;
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}
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static UdevRuleSubstituteType rule_get_substitution_type(const char *str) {
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assert(str);
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if (str[0] == '[')
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return SUBST_TYPE_SUBSYS;
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if (strchr(str, '%') || strchr(str, '$'))
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return SUBST_TYPE_FORMAT;
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return SUBST_TYPE_PLAIN;
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}
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static void rule_line_append_token(UdevRuleLine *rule_line, UdevRuleToken *token) {
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assert(rule_line);
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assert(token);
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if (rule_line->current_token)
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LIST_APPEND(tokens, rule_line->current_token, token);
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else
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LIST_APPEND(tokens, rule_line->tokens, token);
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rule_line->current_token = token;
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}
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static int rule_line_add_token(UdevRuleLine *rule_line, UdevRuleTokenType type, UdevRuleOperatorType op, char *value, void *data) {
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UdevRuleToken *token;
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UdevRuleMatchType match_type = _MATCH_TYPE_INVALID;
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UdevRuleSubstituteType subst_type = _SUBST_TYPE_INVALID;
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bool remove_trailing_whitespace = false;
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size_t len;
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assert(rule_line);
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assert(type >= 0 && type < _TK_TYPE_MAX);
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assert(op >= 0 && op < _OP_TYPE_MAX);
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if (type < _TK_M_MAX) {
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assert(value);
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assert(IN_SET(op, OP_MATCH, OP_NOMATCH));
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if (type == TK_M_SUBSYSTEM && STR_IN_SET(value, "subsystem", "bus", "class"))
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match_type = MATCH_TYPE_SUBSYSTEM;
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else if (isempty(value))
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match_type = MATCH_TYPE_EMPTY;
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else if (streq(value, "?*")) {
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/* Convert KEY=="?*" -> KEY!="" */
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match_type = MATCH_TYPE_EMPTY;
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op = op == OP_MATCH ? OP_NOMATCH : OP_MATCH;
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} else if (string_is_glob(value))
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match_type = MATCH_TYPE_GLOB;
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else
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match_type = MATCH_TYPE_PLAIN;
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if (type < TK_M_TEST || type == TK_M_RESULT) {
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/* Convert value string to nulstr. */
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bool bar = true, empty = false;
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char *a, *b;
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for (a = b = value; *a != '\0'; a++) {
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if (*a != '|') {
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*b++ = *a;
|
|
bar = false;
|
|
} else {
|
|
if (bar)
|
|
empty = true;
|
|
else
|
|
*b++ = '\0';
|
|
bar = true;
|
|
}
|
|
}
|
|
*b = '\0';
|
|
if (bar)
|
|
empty = true;
|
|
|
|
if (empty) {
|
|
if (match_type == MATCH_TYPE_GLOB)
|
|
match_type = MATCH_TYPE_GLOB_WITH_EMPTY;
|
|
if (match_type == MATCH_TYPE_PLAIN)
|
|
match_type = MATCH_TYPE_PLAIN_WITH_EMPTY;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (IN_SET(type, TK_M_ATTR, TK_M_PARENTS_ATTR)) {
|
|
assert(value);
|
|
assert(data);
|
|
|
|
len = strlen(value);
|
|
if (len > 0 && !isspace(value[len - 1]))
|
|
remove_trailing_whitespace = true;
|
|
|
|
subst_type = rule_get_substitution_type((const char*) data);
|
|
}
|
|
|
|
token = new(UdevRuleToken, 1);
|
|
if (!token)
|
|
return -ENOMEM;
|
|
|
|
*token = (UdevRuleToken) {
|
|
.type = type,
|
|
.op = op,
|
|
.value = value,
|
|
.data = data,
|
|
.match_type = match_type,
|
|
.attr_subst_type = subst_type,
|
|
.attr_match_remove_trailing_whitespace = remove_trailing_whitespace,
|
|
};
|
|
|
|
rule_line_append_token(rule_line, token);
|
|
|
|
if (token->type == TK_A_NAME)
|
|
SET_FLAG(rule_line->type, LINE_HAS_NAME, true);
|
|
|
|
else if (IN_SET(token->type, TK_A_DEVLINK,
|
|
TK_A_OWNER, TK_A_GROUP, TK_A_MODE,
|
|
TK_A_OWNER_ID, TK_A_GROUP_ID, TK_A_MODE_ID))
|
|
SET_FLAG(rule_line->type, LINE_HAS_DEVLINK, true);
|
|
|
|
else if (token->type == TK_A_OPTIONS_STATIC_NODE)
|
|
SET_FLAG(rule_line->type, LINE_HAS_STATIC_NODE, true);
|
|
|
|
else if (token->type >= _TK_A_MIN ||
|
|
IN_SET(token->type, TK_M_PROGRAM,
|
|
TK_M_IMPORT_FILE, TK_M_IMPORT_PROGRAM, TK_M_IMPORT_BUILTIN,
|
|
TK_M_IMPORT_DB, TK_M_IMPORT_CMDLINE, TK_M_IMPORT_PARENT))
|
|
SET_FLAG(rule_line->type, LINE_UPDATE_SOMETHING, true);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void check_value_format_and_warn(UdevRules *rules, const char *key, const char *value, bool nonempty) {
|
|
size_t offset;
|
|
const char *hint;
|
|
|
|
if (nonempty && isempty(value))
|
|
log_token_invalid_value(rules, key, value, (size_t) 0, "empty value");
|
|
else if (udev_check_format(value, &offset, &hint) < 0)
|
|
log_token_invalid_value(rules, key, value, offset + 1, hint);
|
|
}
|
|
|
|
static int check_attr_format_and_warn(UdevRules *rules, const char *key, const char *value) {
|
|
size_t offset;
|
|
const char *hint;
|
|
|
|
if (isempty(value))
|
|
return log_token_invalid_attr(rules, key);
|
|
if (udev_check_format(value, &offset, &hint) < 0)
|
|
log_token_invalid_attr_format(rules, key, value, offset + 1, hint);
|
|
return 0;
|
|
}
|
|
|
|
static int parse_token(UdevRules *rules, const char *key, char *attr, UdevRuleOperatorType op, char *value) {
|
|
bool is_match = IN_SET(op, OP_MATCH, OP_NOMATCH);
|
|
UdevRuleLine *rule_line;
|
|
int r;
|
|
|
|
assert(rules);
|
|
assert(rules->current_file);
|
|
assert(rules->current_file->current_line);
|
|
assert(key);
|
|
assert(value);
|
|
|
|
rule_line = rules->current_file->current_line;
|
|
|
|
if (streq(key, "ACTION")) {
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
if (!is_match)
|
|
return log_token_invalid_op(rules, key);
|
|
|
|
r = rule_line_add_token(rule_line, TK_M_ACTION, op, value, NULL);
|
|
} else if (streq(key, "DEVPATH")) {
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
if (!is_match)
|
|
return log_token_invalid_op(rules, key);
|
|
|
|
r = rule_line_add_token(rule_line, TK_M_DEVPATH, op, value, NULL);
|
|
} else if (streq(key, "KERNEL")) {
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
if (!is_match)
|
|
return log_token_invalid_op(rules, key);
|
|
|
|
r = rule_line_add_token(rule_line, TK_M_KERNEL, op, value, NULL);
|
|
} else if (streq(key, "SYMLINK")) {
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
if (op == OP_REMOVE)
|
|
return log_token_invalid_op(rules, key);
|
|
|
|
if (!is_match) {
|
|
check_value_format_and_warn(rules, key, value, false);
|
|
r = rule_line_add_token(rule_line, TK_A_DEVLINK, op, value, NULL);
|
|
} else
|
|
r = rule_line_add_token(rule_line, TK_M_DEVLINK, op, value, NULL);
|
|
} else if (streq(key, "NAME")) {
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
if (op == OP_REMOVE)
|
|
return log_token_invalid_op(rules, key);
|
|
if (op == OP_ADD) {
|
|
log_token_warning(rules, "%s key takes '==', '!=', '=', or ':=' operator, assuming '=', but please fix it.", key);
|
|
op = OP_ASSIGN;
|
|
}
|
|
|
|
if (!is_match) {
|
|
if (streq(value, "%k"))
|
|
return log_token_error_errno(rules, SYNTHETIC_ERRNO(EINVAL),
|
|
"Ignoring NAME=\"%%k\" is ignored, as it breaks kernel supplied names.");
|
|
if (isempty(value))
|
|
return log_token_error_errno(rules, SYNTHETIC_ERRNO(EINVAL),
|
|
"Ignoring NAME=\"\", as udev will not delete any device nodes.");
|
|
check_value_format_and_warn(rules, key, value, false);
|
|
|
|
r = rule_line_add_token(rule_line, TK_A_NAME, op, value, NULL);
|
|
} else
|
|
r = rule_line_add_token(rule_line, TK_M_NAME, op, value, NULL);
|
|
} else if (streq(key, "ENV")) {
|
|
if (isempty(attr))
|
|
return log_token_invalid_attr(rules, key);
|
|
if (op == OP_REMOVE)
|
|
return log_token_invalid_op(rules, key);
|
|
if (op == OP_ASSIGN_FINAL) {
|
|
log_token_warning(rules, "%s key takes '==', '!=', '=', or '+=' operator, assuming '=', but please fix it.", key);
|
|
op = OP_ASSIGN;
|
|
}
|
|
|
|
if (!is_match) {
|
|
if (STR_IN_SET(attr,
|
|
"ACTION", "DEVLINKS", "DEVNAME", "DEVPATH", "DEVTYPE", "DRIVER",
|
|
"IFINDEX", "MAJOR", "MINOR", "SEQNUM", "SUBSYSTEM", "TAGS"))
|
|
return log_token_error_errno(rules, SYNTHETIC_ERRNO(EINVAL),
|
|
"Invalid ENV attribute. '%s' cannot be set.", attr);
|
|
|
|
check_value_format_and_warn(rules, key, value, false);
|
|
|
|
r = rule_line_add_token(rule_line, TK_A_ENV, op, value, attr);
|
|
} else
|
|
r = rule_line_add_token(rule_line, TK_M_ENV, op, value, attr);
|
|
} else if (streq(key, "CONST")) {
|
|
if (isempty(attr) || !STR_IN_SET(attr, "arch", "virt"))
|
|
return log_token_invalid_attr(rules, key);
|
|
if (!is_match)
|
|
return log_token_invalid_op(rules, key);
|
|
r = rule_line_add_token(rule_line, TK_M_CONST, op, value, attr);
|
|
} else if (streq(key, "TAG")) {
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
if (op == OP_ASSIGN_FINAL) {
|
|
log_token_warning(rules, "%s key takes '==', '!=', '=', or '+=' operator, assuming '=', but please fix it.", key);
|
|
op = OP_ASSIGN;
|
|
}
|
|
|
|
if (!is_match) {
|
|
check_value_format_and_warn(rules, key, value, true);
|
|
|
|
r = rule_line_add_token(rule_line, TK_A_TAG, op, value, NULL);
|
|
} else
|
|
r = rule_line_add_token(rule_line, TK_M_TAG, op, value, NULL);
|
|
} else if (streq(key, "SUBSYSTEM")) {
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
if (!is_match)
|
|
return log_token_invalid_op(rules, key);
|
|
|
|
if (STR_IN_SET(value, "bus", "class"))
|
|
log_token_warning(rules, "'%s' must be specified as 'subsystem'; please fix it", value);
|
|
|
|
r = rule_line_add_token(rule_line, TK_M_SUBSYSTEM, op, value, NULL);
|
|
} else if (streq(key, "DRIVER")) {
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
if (!is_match)
|
|
return log_token_invalid_op(rules, key);
|
|
|
|
r = rule_line_add_token(rule_line, TK_M_DRIVER, op, value, NULL);
|
|
} else if (streq(key, "ATTR")) {
|
|
r = check_attr_format_and_warn(rules, key, attr);
|
|
if (r < 0)
|
|
return r;
|
|
if (op == OP_REMOVE)
|
|
return log_token_invalid_op(rules, key);
|
|
if (IN_SET(op, OP_ADD, OP_ASSIGN_FINAL)) {
|
|
log_token_warning(rules, "%s key takes '==', '!=', or '=' operator, assuming '=', but please fix it.", key);
|
|
op = OP_ASSIGN;
|
|
}
|
|
|
|
if (!is_match) {
|
|
check_value_format_and_warn(rules, key, value, false);
|
|
r = rule_line_add_token(rule_line, TK_A_ATTR, op, value, attr);
|
|
} else
|
|
r = rule_line_add_token(rule_line, TK_M_ATTR, op, value, attr);
|
|
} else if (streq(key, "SYSCTL")) {
|
|
r = check_attr_format_and_warn(rules, key, attr);
|
|
if (r < 0)
|
|
return r;
|
|
if (op == OP_REMOVE)
|
|
return log_token_invalid_op(rules, key);
|
|
if (IN_SET(op, OP_ADD, OP_ASSIGN_FINAL)) {
|
|
log_token_warning(rules, "%s key takes '==', '!=', or '=' operator, assuming '=', but please fix it.", key);
|
|
op = OP_ASSIGN;
|
|
}
|
|
|
|
if (!is_match) {
|
|
check_value_format_and_warn(rules, key, value, false);
|
|
r = rule_line_add_token(rule_line, TK_A_SYSCTL, op, value, attr);
|
|
} else
|
|
r = rule_line_add_token(rule_line, TK_M_SYSCTL, op, value, attr);
|
|
} else if (streq(key, "KERNELS")) {
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
if (!is_match)
|
|
return log_token_invalid_op(rules, key);
|
|
|
|
r = rule_line_add_token(rule_line, TK_M_PARENTS_KERNEL, op, value, NULL);
|
|
} else if (streq(key, "SUBSYSTEMS")) {
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
if (!is_match)
|
|
return log_token_invalid_op(rules, key);
|
|
|
|
r = rule_line_add_token(rule_line, TK_M_PARENTS_SUBSYSTEM, op, value, NULL);
|
|
} else if (streq(key, "DRIVERS")) {
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
if (!is_match)
|
|
return log_token_invalid_op(rules, key);
|
|
|
|
r = rule_line_add_token(rule_line, TK_M_PARENTS_DRIVER, op, value, NULL);
|
|
} else if (streq(key, "ATTRS")) {
|
|
r = check_attr_format_and_warn(rules, key, attr);
|
|
if (r < 0)
|
|
return r;
|
|
if (!is_match)
|
|
return log_token_invalid_op(rules, key);
|
|
|
|
if (startswith(attr, "device/"))
|
|
log_token_warning(rules, "'device' link may not be available in future kernels; please fix it.");
|
|
if (strstr(attr, "../"))
|
|
log_token_warning(rules, "Direct reference to parent sysfs directory, may break in future kernels; please fix it.");
|
|
|
|
r = rule_line_add_token(rule_line, TK_M_PARENTS_ATTR, op, value, attr);
|
|
} else if (streq(key, "TAGS")) {
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
if (!is_match)
|
|
return log_token_invalid_op(rules, key);
|
|
|
|
r = rule_line_add_token(rule_line, TK_M_PARENTS_TAG, op, value, NULL);
|
|
} else if (streq(key, "TEST")) {
|
|
mode_t mode = MODE_INVALID;
|
|
|
|
if (!isempty(attr)) {
|
|
r = parse_mode(attr, &mode);
|
|
if (r < 0)
|
|
return log_token_error_errno(rules, r, "Failed to parse mode '%s': %m", attr);
|
|
}
|
|
check_value_format_and_warn(rules, key, value, true);
|
|
if (!is_match)
|
|
return log_token_invalid_op(rules, key);
|
|
|
|
r = rule_line_add_token(rule_line, TK_M_TEST, op, value, MODE_TO_PTR(mode));
|
|
} else if (streq(key, "PROGRAM")) {
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
check_value_format_and_warn(rules, key, value, true);
|
|
if (op == OP_REMOVE)
|
|
return log_token_invalid_op(rules, key);
|
|
if (!is_match) {
|
|
log_token_debug(rules, "%s key takes '==' or '!=' operator, assuming '=='.", key);
|
|
op = OP_MATCH;
|
|
}
|
|
|
|
r = rule_line_add_token(rule_line, TK_M_PROGRAM, op, value, NULL);
|
|
} else if (streq(key, "IMPORT")) {
|
|
if (isempty(attr))
|
|
return log_token_invalid_attr(rules, key);
|
|
check_value_format_and_warn(rules, key, value, true);
|
|
if (op == OP_REMOVE)
|
|
return log_token_invalid_op(rules, key);
|
|
if (!is_match) {
|
|
log_token_debug(rules, "%s key takes '==' or '!=' operator, assuming '=='.", key);
|
|
op = OP_MATCH;
|
|
}
|
|
|
|
if (streq(attr, "file"))
|
|
r = rule_line_add_token(rule_line, TK_M_IMPORT_FILE, op, value, NULL);
|
|
else if (streq(attr, "program")) {
|
|
UdevBuiltinCommand cmd;
|
|
|
|
cmd = udev_builtin_lookup(value);
|
|
if (cmd >= 0) {
|
|
log_token_debug(rules,"Found builtin command '%s' for %s, replacing attribute", value, key);
|
|
r = rule_line_add_token(rule_line, TK_M_IMPORT_BUILTIN, op, value, UDEV_BUILTIN_CMD_TO_PTR(cmd));
|
|
} else
|
|
r = rule_line_add_token(rule_line, TK_M_IMPORT_PROGRAM, op, value, NULL);
|
|
} else if (streq(attr, "builtin")) {
|
|
UdevBuiltinCommand cmd;
|
|
|
|
cmd = udev_builtin_lookup(value);
|
|
if (cmd < 0)
|
|
return log_token_error_errno(rules, SYNTHETIC_ERRNO(EINVAL),
|
|
"Unknown builtin command: %s", value);
|
|
r = rule_line_add_token(rule_line, TK_M_IMPORT_BUILTIN, op, value, UDEV_BUILTIN_CMD_TO_PTR(cmd));
|
|
} else if (streq(attr, "db"))
|
|
r = rule_line_add_token(rule_line, TK_M_IMPORT_DB, op, value, NULL);
|
|
else if (streq(attr, "cmdline"))
|
|
r = rule_line_add_token(rule_line, TK_M_IMPORT_CMDLINE, op, value, NULL);
|
|
else if (streq(attr, "parent"))
|
|
r = rule_line_add_token(rule_line, TK_M_IMPORT_PARENT, op, value, NULL);
|
|
else
|
|
return log_token_invalid_attr(rules, key);
|
|
} else if (streq(key, "RESULT")) {
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
if (!is_match)
|
|
return log_token_invalid_op(rules, key);
|
|
|
|
r = rule_line_add_token(rule_line, TK_M_RESULT, op, value, NULL);
|
|
} else if (streq(key, "OPTIONS")) {
|
|
char *tmp;
|
|
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
if (is_match || op == OP_REMOVE)
|
|
return log_token_invalid_op(rules, key);
|
|
if (op == OP_ADD) {
|
|
log_token_debug(rules, "Operator '+=' is specified to %s key, assuming '='.", key);
|
|
op = OP_ASSIGN;
|
|
}
|
|
|
|
if (streq(value, "string_escape=none"))
|
|
r = rule_line_add_token(rule_line, TK_A_OPTIONS_STRING_ESCAPE_NONE, op, NULL, NULL);
|
|
else if (streq(value, "string_escape=replace"))
|
|
r = rule_line_add_token(rule_line, TK_A_OPTIONS_STRING_ESCAPE_REPLACE, op, NULL, NULL);
|
|
else if (streq(value, "db_persist"))
|
|
r = rule_line_add_token(rule_line, TK_A_OPTIONS_DB_PERSIST, op, NULL, NULL);
|
|
else if (streq(value, "watch"))
|
|
r = rule_line_add_token(rule_line, TK_A_OPTIONS_INOTIFY_WATCH, op, NULL, INT_TO_PTR(1));
|
|
else if (streq(value, "nowatch"))
|
|
r = rule_line_add_token(rule_line, TK_A_OPTIONS_INOTIFY_WATCH, op, NULL, INT_TO_PTR(0));
|
|
else if ((tmp = startswith(value, "static_node=")))
|
|
r = rule_line_add_token(rule_line, TK_A_OPTIONS_STATIC_NODE, op, tmp, NULL);
|
|
else if ((tmp = startswith(value, "link_priority="))) {
|
|
int prio;
|
|
|
|
r = safe_atoi(tmp, &prio);
|
|
if (r < 0)
|
|
return log_token_error_errno(rules, r, "Failed to parse link priority '%s': %m", tmp);
|
|
r = rule_line_add_token(rule_line, TK_A_OPTIONS_DEVLINK_PRIORITY, op, NULL, INT_TO_PTR(prio));
|
|
} else {
|
|
log_token_warning(rules, "Invalid value for OPTIONS key, ignoring: '%s'", value);
|
|
return 0;
|
|
}
|
|
} else if (streq(key, "OWNER")) {
|
|
uid_t uid;
|
|
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
if (is_match || op == OP_REMOVE)
|
|
return log_token_invalid_op(rules, key);
|
|
if (op == OP_ADD) {
|
|
log_token_warning(rules, "%s key takes '=' or ':=' operator, assuming '=', but please fix it.", key);
|
|
op = OP_ASSIGN;
|
|
}
|
|
|
|
if (parse_uid(value, &uid) >= 0)
|
|
r = rule_line_add_token(rule_line, TK_A_OWNER_ID, op, NULL, UID_TO_PTR(uid));
|
|
else if (rules->resolve_name_timing == RESOLVE_NAME_EARLY &&
|
|
rule_get_substitution_type(value) == SUBST_TYPE_PLAIN) {
|
|
r = rule_resolve_user(rules, value, &uid);
|
|
if (r < 0)
|
|
return log_token_error_errno(rules, r, "Failed to resolve user name '%s': %m", value);
|
|
|
|
r = rule_line_add_token(rule_line, TK_A_OWNER_ID, op, NULL, UID_TO_PTR(uid));
|
|
} else if (rules->resolve_name_timing != RESOLVE_NAME_NEVER) {
|
|
check_value_format_and_warn(rules, key, value, true);
|
|
r = rule_line_add_token(rule_line, TK_A_OWNER, op, value, NULL);
|
|
} else {
|
|
log_token_debug(rules, "Resolving user name is disabled, ignoring %s=%s", key, value);
|
|
return 0;
|
|
}
|
|
} else if (streq(key, "GROUP")) {
|
|
gid_t gid;
|
|
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
if (is_match || op == OP_REMOVE)
|
|
return log_token_invalid_op(rules, key);
|
|
if (op == OP_ADD) {
|
|
log_token_warning(rules, "%s key takes '=' or ':=' operator, assuming '=', but please fix it.", key);
|
|
op = OP_ASSIGN;
|
|
}
|
|
|
|
if (parse_gid(value, &gid) >= 0)
|
|
r = rule_line_add_token(rule_line, TK_A_GROUP_ID, op, NULL, GID_TO_PTR(gid));
|
|
else if (rules->resolve_name_timing == RESOLVE_NAME_EARLY &&
|
|
rule_get_substitution_type(value) == SUBST_TYPE_PLAIN) {
|
|
r = rule_resolve_group(rules, value, &gid);
|
|
if (r < 0)
|
|
return log_token_error_errno(rules, r, "Failed to resolve group name '%s': %m", value);
|
|
|
|
r = rule_line_add_token(rule_line, TK_A_GROUP_ID, op, NULL, GID_TO_PTR(gid));
|
|
} else if (rules->resolve_name_timing != RESOLVE_NAME_NEVER) {
|
|
check_value_format_and_warn(rules, key, value, true);
|
|
r = rule_line_add_token(rule_line, TK_A_GROUP, op, value, NULL);
|
|
} else {
|
|
log_token_debug(rules, "Resolving group name is disabled, ignoring %s=%s", key, value);
|
|
return 0;
|
|
}
|
|
} else if (streq(key, "MODE")) {
|
|
mode_t mode;
|
|
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
if (is_match || op == OP_REMOVE)
|
|
return log_token_invalid_op(rules, key);
|
|
if (op == OP_ADD) {
|
|
log_token_warning(rules, "%s key takes '=' or ':=' operator, assuming '=', but please fix it.", key);
|
|
op = OP_ASSIGN;
|
|
}
|
|
|
|
if (parse_mode(value, &mode) >= 0)
|
|
r = rule_line_add_token(rule_line, TK_A_MODE_ID, op, NULL, MODE_TO_PTR(mode));
|
|
else {
|
|
check_value_format_and_warn(rules, key, value, true);
|
|
r = rule_line_add_token(rule_line, TK_A_MODE, op, value, NULL);
|
|
}
|
|
} else if (streq(key, "SECLABEL")) {
|
|
if (isempty(attr))
|
|
return log_token_invalid_attr(rules, key);
|
|
check_value_format_and_warn(rules, key, value, true);
|
|
if (is_match || op == OP_REMOVE)
|
|
return log_token_invalid_op(rules, key);
|
|
if (op == OP_ASSIGN_FINAL) {
|
|
log_token_warning(rules, "%s key takes '=' or '+=' operator, assuming '=', but please fix it.", key);
|
|
op = OP_ASSIGN;
|
|
}
|
|
|
|
r = rule_line_add_token(rule_line, TK_A_SECLABEL, op, value, NULL);
|
|
} else if (streq(key, "RUN")) {
|
|
if (is_match || op == OP_REMOVE)
|
|
return log_token_invalid_op(rules, key);
|
|
check_value_format_and_warn(rules, key, value, true);
|
|
if (!attr || streq(attr, "program"))
|
|
r = rule_line_add_token(rule_line, TK_A_RUN_PROGRAM, op, value, NULL);
|
|
else if (streq(attr, "builtin")) {
|
|
UdevBuiltinCommand cmd;
|
|
|
|
cmd = udev_builtin_lookup(value);
|
|
if (cmd < 0)
|
|
return log_token_error_errno(rules, SYNTHETIC_ERRNO(EINVAL),
|
|
"Unknown builtin command '%s', ignoring", value);
|
|
r = rule_line_add_token(rule_line, TK_A_RUN_BUILTIN, op, value, UDEV_BUILTIN_CMD_TO_PTR(cmd));
|
|
} else
|
|
return log_token_invalid_attr(rules, key);
|
|
} else if (streq(key, "GOTO")) {
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
if (op != OP_ASSIGN)
|
|
return log_token_invalid_op(rules, key);
|
|
if (FLAGS_SET(rule_line->type, LINE_HAS_GOTO)) {
|
|
log_token_warning(rules, "Contains multiple GOTO key, ignoring GOTO=\"%s\".", value);
|
|
return 0;
|
|
}
|
|
|
|
rule_line->goto_label = value;
|
|
SET_FLAG(rule_line->type, LINE_HAS_GOTO, true);
|
|
return 1;
|
|
} else if (streq(key, "LABEL")) {
|
|
if (attr)
|
|
return log_token_invalid_attr(rules, key);
|
|
if (op != OP_ASSIGN)
|
|
return log_token_invalid_op(rules, key);
|
|
|
|
rule_line->label = value;
|
|
SET_FLAG(rule_line->type, LINE_HAS_LABEL, true);
|
|
return 1;
|
|
} else
|
|
return log_token_error_errno(rules, SYNTHETIC_ERRNO(EINVAL), "Invalid key '%s'", key);
|
|
if (r < 0)
|
|
return log_oom();
|
|
|
|
return 1;
|
|
}
|
|
|
|
static UdevRuleOperatorType parse_operator(const char *op) {
|
|
assert(op);
|
|
|
|
if (startswith(op, "=="))
|
|
return OP_MATCH;
|
|
if (startswith(op, "!="))
|
|
return OP_NOMATCH;
|
|
if (startswith(op, "+="))
|
|
return OP_ADD;
|
|
if (startswith(op, "-="))
|
|
return OP_REMOVE;
|
|
if (startswith(op, "="))
|
|
return OP_ASSIGN;
|
|
if (startswith(op, ":="))
|
|
return OP_ASSIGN_FINAL;
|
|
|
|
return _OP_TYPE_INVALID;
|
|
}
|
|
|
|
static int parse_line(char **line, char **ret_key, char **ret_attr, UdevRuleOperatorType *ret_op, char **ret_value) {
|
|
char *key_begin, *key_end, *attr, *tmp, *value, *i, *j;
|
|
UdevRuleOperatorType op;
|
|
|
|
assert(line);
|
|
assert(*line);
|
|
assert(ret_key);
|
|
assert(ret_op);
|
|
assert(ret_value);
|
|
|
|
key_begin = skip_leading_chars(*line, WHITESPACE ",");
|
|
|
|
if (isempty(key_begin))
|
|
return 0;
|
|
|
|
for (key_end = key_begin; ; key_end++) {
|
|
if (key_end[0] == '\0')
|
|
return -EINVAL;
|
|
if (strchr(WHITESPACE "={", key_end[0]))
|
|
break;
|
|
if (strchr("+-!:", key_end[0]) && key_end[1] == '=')
|
|
break;
|
|
}
|
|
if (key_end[0] == '{') {
|
|
attr = key_end + 1;
|
|
tmp = strchr(attr, '}');
|
|
if (!tmp)
|
|
return -EINVAL;
|
|
*tmp++ = '\0';
|
|
} else {
|
|
attr = NULL;
|
|
tmp = key_end;
|
|
}
|
|
|
|
tmp = skip_leading_chars(tmp, NULL);
|
|
op = parse_operator(tmp);
|
|
if (op < 0)
|
|
return -EINVAL;
|
|
|
|
key_end[0] = '\0';
|
|
|
|
tmp += op == OP_ASSIGN ? 1 : 2;
|
|
value = skip_leading_chars(tmp, NULL);
|
|
|
|
/* value must be double quotated */
|
|
if (value[0] != '"')
|
|
return -EINVAL;
|
|
value++;
|
|
|
|
/* unescape double quotation '\"' -> '"' */
|
|
for (i = j = value; ; i++, j++) {
|
|
if (*i == '"')
|
|
break;
|
|
if (*i == '\0')
|
|
return -EINVAL;
|
|
if (i[0] == '\\' && i[1] == '"')
|
|
i++;
|
|
*j = *i;
|
|
}
|
|
j[0] = '\0';
|
|
|
|
*line = i+1;
|
|
*ret_key = key_begin;
|
|
*ret_attr = attr;
|
|
*ret_op = op;
|
|
*ret_value = value;
|
|
return 1;
|
|
}
|
|
|
|
static void sort_tokens(UdevRuleLine *rule_line) {
|
|
UdevRuleToken *head_old;
|
|
|
|
assert(rule_line);
|
|
|
|
head_old = TAKE_PTR(rule_line->tokens);
|
|
rule_line->current_token = NULL;
|
|
|
|
while (!LIST_IS_EMPTY(head_old)) {
|
|
UdevRuleToken *t, *min_token = NULL;
|
|
|
|
LIST_FOREACH(tokens, t, head_old)
|
|
if (!min_token || min_token->type > t->type)
|
|
min_token = t;
|
|
|
|
LIST_REMOVE(tokens, head_old, min_token);
|
|
rule_line_append_token(rule_line, min_token);
|
|
}
|
|
}
|
|
|
|
static int rule_add_line(UdevRules *rules, const char *line_str, unsigned line_nr) {
|
|
_cleanup_(udev_rule_line_freep) UdevRuleLine *rule_line = NULL;
|
|
_cleanup_free_ char *line = NULL;
|
|
UdevRuleFile *rule_file;
|
|
char *p;
|
|
int r;
|
|
|
|
assert(rules);
|
|
assert(rules->current_file);
|
|
assert(line_str);
|
|
|
|
rule_file = rules->current_file;
|
|
|
|
if (isempty(line_str))
|
|
return 0;
|
|
|
|
line = strdup(line_str);
|
|
if (!line)
|
|
return log_oom();
|
|
|
|
rule_line = new(UdevRuleLine, 1);
|
|
if (!rule_line)
|
|
return log_oom();
|
|
|
|
*rule_line = (UdevRuleLine) {
|
|
.line = TAKE_PTR(line),
|
|
.line_number = line_nr,
|
|
.rule_file = rule_file,
|
|
};
|
|
|
|
if (rule_file->current_line)
|
|
LIST_APPEND(rule_lines, rule_file->current_line, rule_line);
|
|
else
|
|
LIST_APPEND(rule_lines, rule_file->rule_lines, rule_line);
|
|
|
|
rule_file->current_line = rule_line;
|
|
|
|
for (p = rule_line->line; !isempty(p); ) {
|
|
char *key, *attr, *value;
|
|
UdevRuleOperatorType op;
|
|
|
|
r = parse_line(&p, &key, &attr, &op, &value);
|
|
if (r < 0)
|
|
return log_token_error_errno(rules, r, "Invalid key/value pair, ignoring.");
|
|
if (r == 0)
|
|
break;
|
|
|
|
r = parse_token(rules, key, attr, op, value);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
if (rule_line->type == 0) {
|
|
log_token_warning(rules, "The line takes no effect, ignoring.");
|
|
return 0;
|
|
}
|
|
|
|
sort_tokens(rule_line);
|
|
TAKE_PTR(rule_line);
|
|
return 0;
|
|
}
|
|
|
|
static void rule_resolve_goto(UdevRuleFile *rule_file) {
|
|
UdevRuleLine *line, *line_next, *i;
|
|
|
|
assert(rule_file);
|
|
|
|
/* link GOTOs to LABEL rules in this file to be able to fast-forward */
|
|
LIST_FOREACH_SAFE(rule_lines, line, line_next, rule_file->rule_lines) {
|
|
if (!FLAGS_SET(line->type, LINE_HAS_GOTO))
|
|
continue;
|
|
|
|
LIST_FOREACH_AFTER(rule_lines, i, line)
|
|
if (streq_ptr(i->label, line->goto_label)) {
|
|
line->goto_line = i;
|
|
break;
|
|
}
|
|
|
|
if (!line->goto_line) {
|
|
log_error("%s:%u: GOTO=\"%s\" has no matching label, ignoring",
|
|
rule_file->filename, line->line_number, line->goto_label);
|
|
|
|
SET_FLAG(line->type, LINE_HAS_GOTO, false);
|
|
line->goto_label = NULL;
|
|
|
|
if ((line->type & ~LINE_HAS_LABEL) == 0) {
|
|
log_notice("%s:%u: The line takes no effect any more, dropping",
|
|
rule_file->filename, line->line_number);
|
|
if (line->type == LINE_HAS_LABEL)
|
|
udev_rule_line_clear_tokens(line);
|
|
else
|
|
udev_rule_line_free(line);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int parse_file(UdevRules *rules, const char *filename) {
|
|
_cleanup_free_ char *continuation = NULL, *name = NULL;
|
|
_cleanup_fclose_ FILE *f = NULL;
|
|
UdevRuleFile *rule_file;
|
|
bool ignore_line = false;
|
|
unsigned line_nr = 0;
|
|
int r;
|
|
|
|
f = fopen(filename, "re");
|
|
if (!f) {
|
|
if (errno == ENOENT)
|
|
return 0;
|
|
|
|
return -errno;
|
|
}
|
|
|
|
(void) fd_warn_permissions(filename, fileno(f));
|
|
|
|
if (null_or_empty_fd(fileno(f))) {
|
|
log_debug("Skipping empty file: %s", filename);
|
|
return 0;
|
|
}
|
|
|
|
log_debug("Reading rules file: %s", filename);
|
|
|
|
name = strdup(filename);
|
|
if (!name)
|
|
return log_oom();
|
|
|
|
rule_file = new(UdevRuleFile, 1);
|
|
if (!rule_file)
|
|
return log_oom();
|
|
|
|
*rule_file = (UdevRuleFile) {
|
|
.filename = TAKE_PTR(name),
|
|
};
|
|
|
|
if (rules->current_file)
|
|
LIST_APPEND(rule_files, rules->current_file, rule_file);
|
|
else
|
|
LIST_APPEND(rule_files, rules->rule_files, rule_file);
|
|
|
|
rules->current_file = rule_file;
|
|
|
|
for (;;) {
|
|
_cleanup_free_ char *buf = NULL;
|
|
size_t len;
|
|
char *line;
|
|
|
|
r = read_line(f, UTIL_LINE_SIZE, &buf);
|
|
if (r < 0)
|
|
return r;
|
|
if (r == 0)
|
|
break;
|
|
|
|
line_nr++;
|
|
line = skip_leading_chars(buf, NULL);
|
|
|
|
if (line[0] == '#')
|
|
continue;
|
|
|
|
len = strlen(line);
|
|
|
|
if (continuation && !ignore_line) {
|
|
if (strlen(continuation) + len >= UTIL_LINE_SIZE)
|
|
ignore_line = true;
|
|
|
|
if (!strextend(&continuation, line, NULL))
|
|
return log_oom();
|
|
|
|
if (!ignore_line) {
|
|
line = continuation;
|
|
len = strlen(line);
|
|
}
|
|
}
|
|
|
|
if (len > 0 && line[len - 1] == '\\') {
|
|
if (ignore_line)
|
|
continue;
|
|
|
|
line[len - 1] = '\0';
|
|
if (!continuation) {
|
|
continuation = strdup(line);
|
|
if (!continuation)
|
|
return log_oom();
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
if (ignore_line)
|
|
log_error("%s:%u: Line is too long, ignored", filename, line_nr);
|
|
else if (len > 0)
|
|
(void) rule_add_line(rules, line, line_nr);
|
|
|
|
continuation = mfree(continuation);
|
|
ignore_line = false;
|
|
}
|
|
|
|
rule_resolve_goto(rule_file);
|
|
return 0;
|
|
}
|
|
|
|
int udev_rules_new(UdevRules **ret_rules, ResolveNameTiming resolve_name_timing) {
|
|
_cleanup_(udev_rules_freep) UdevRules *rules = NULL;
|
|
_cleanup_strv_free_ char **files = NULL;
|
|
char **f;
|
|
int r;
|
|
|
|
assert(resolve_name_timing >= 0 && resolve_name_timing < _RESOLVE_NAME_TIMING_MAX);
|
|
|
|
rules = new(UdevRules, 1);
|
|
if (!rules)
|
|
return -ENOMEM;
|
|
|
|
*rules = (UdevRules) {
|
|
.resolve_name_timing = resolve_name_timing,
|
|
};
|
|
|
|
(void) udev_rules_check_timestamp(rules);
|
|
|
|
r = conf_files_list_strv(&files, ".rules", NULL, 0, RULES_DIRS);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to enumerate rules files: %m");
|
|
|
|
STRV_FOREACH(f, files)
|
|
(void) parse_file(rules, *f);
|
|
|
|
*ret_rules = TAKE_PTR(rules);
|
|
return 0;
|
|
}
|
|
|
|
bool udev_rules_check_timestamp(UdevRules *rules) {
|
|
if (!rules)
|
|
return false;
|
|
|
|
return paths_check_timestamp(RULES_DIRS, &rules->dirs_ts_usec, true);
|
|
}
|
|
|
|
static bool token_match_string(UdevRuleToken *token, const char *str) {
|
|
const char *i, *value;
|
|
bool match = false;
|
|
|
|
assert(token);
|
|
assert(token->value);
|
|
assert(token->type < _TK_M_MAX);
|
|
|
|
str = strempty(str);
|
|
value = token->value;
|
|
|
|
switch (token->match_type) {
|
|
case MATCH_TYPE_EMPTY:
|
|
match = isempty(str);
|
|
break;
|
|
case MATCH_TYPE_SUBSYSTEM:
|
|
NULSTR_FOREACH(i, "subsystem\0class\0bus\0")
|
|
if (streq(i, str)) {
|
|
match = true;
|
|
break;
|
|
}
|
|
break;
|
|
case MATCH_TYPE_PLAIN_WITH_EMPTY:
|
|
if (isempty(str)) {
|
|
match = true;
|
|
break;
|
|
}
|
|
_fallthrough_;
|
|
case MATCH_TYPE_PLAIN:
|
|
NULSTR_FOREACH(i, value)
|
|
if (streq(i, str)) {
|
|
match = true;
|
|
break;
|
|
}
|
|
break;
|
|
case MATCH_TYPE_GLOB_WITH_EMPTY:
|
|
if (isempty(str)) {
|
|
match = true;
|
|
break;
|
|
}
|
|
_fallthrough_;
|
|
case MATCH_TYPE_GLOB:
|
|
NULSTR_FOREACH(i, value)
|
|
if ((fnmatch(i, str, 0) == 0)) {
|
|
match = true;
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
assert_not_reached("Invalid match type");
|
|
}
|
|
|
|
return token->op == (match ? OP_MATCH : OP_NOMATCH);
|
|
}
|
|
|
|
static bool token_match_attr(UdevRuleToken *token, sd_device *dev, UdevEvent *event) {
|
|
char nbuf[UTIL_NAME_SIZE], vbuf[UTIL_NAME_SIZE];
|
|
const char *name, *value;
|
|
|
|
assert(token);
|
|
assert(dev);
|
|
assert(event);
|
|
|
|
name = (const char*) token->data;
|
|
|
|
switch (token->attr_subst_type) {
|
|
case SUBST_TYPE_FORMAT:
|
|
(void) udev_event_apply_format(event, name, nbuf, sizeof(nbuf), false);
|
|
name = nbuf;
|
|
_fallthrough_;
|
|
case SUBST_TYPE_PLAIN:
|
|
if (sd_device_get_sysattr_value(dev, name, &value) < 0)
|
|
return false;
|
|
break;
|
|
case SUBST_TYPE_SUBSYS:
|
|
if (util_resolve_subsys_kernel(name, vbuf, sizeof(vbuf), true) < 0)
|
|
return false;
|
|
value = vbuf;
|
|
break;
|
|
default:
|
|
assert_not_reached("Invalid attribute substitution type");
|
|
}
|
|
|
|
/* remove trailing whitespace, if not asked to match for it */
|
|
if (token->attr_match_remove_trailing_whitespace) {
|
|
if (value != vbuf) {
|
|
strscpy(vbuf, sizeof(vbuf), value);
|
|
value = vbuf;
|
|
}
|
|
|
|
delete_trailing_chars(vbuf, NULL);
|
|
}
|
|
|
|
return token_match_string(token, value);
|
|
}
|
|
|
|
static int get_property_from_string(char *line, char **ret_key, char **ret_value) {
|
|
char *key, *val;
|
|
size_t len;
|
|
|
|
assert(line);
|
|
assert(ret_key);
|
|
assert(ret_value);
|
|
|
|
/* find key */
|
|
key = skip_leading_chars(line, NULL);
|
|
|
|
/* comment or empty line */
|
|
if (IN_SET(key[0], '#', '\0')) {
|
|
*ret_key = *ret_value = NULL;
|
|
return 0;
|
|
}
|
|
|
|
/* split key/value */
|
|
val = strchr(key, '=');
|
|
if (!val)
|
|
return -EINVAL;
|
|
*val++ = '\0';
|
|
|
|
key = strstrip(key);
|
|
if (isempty(key))
|
|
return -EINVAL;
|
|
|
|
val = strstrip(val);
|
|
if (isempty(val))
|
|
return -EINVAL;
|
|
|
|
/* unquote */
|
|
if (IN_SET(val[0], '"', '\'')) {
|
|
len = strlen(val);
|
|
if (len == 1 || val[len-1] != val[0])
|
|
return -EINVAL;
|
|
val[len-1] = '\0';
|
|
val++;
|
|
}
|
|
|
|
*ret_key = key;
|
|
*ret_value = val;
|
|
return 1;
|
|
}
|
|
|
|
static int import_parent_into_properties(sd_device *dev, const char *filter) {
|
|
const char *key, *val;
|
|
sd_device *parent;
|
|
int r;
|
|
|
|
assert(dev);
|
|
assert(filter);
|
|
|
|
r = sd_device_get_parent(dev, &parent);
|
|
if (r == -ENOENT)
|
|
return 0;
|
|
if (r < 0)
|
|
return r;
|
|
|
|
FOREACH_DEVICE_PROPERTY(parent, key, val) {
|
|
if (fnmatch(filter, key, 0) != 0)
|
|
continue;
|
|
r = device_add_property(dev, key, val);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int attr_subst_subdir(char attr[static UTIL_PATH_SIZE]) {
|
|
_cleanup_closedir_ DIR *dir = NULL;
|
|
struct dirent *dent;
|
|
char buf[UTIL_PATH_SIZE], *p;
|
|
const char *tail;
|
|
size_t len, size;
|
|
|
|
assert(attr);
|
|
|
|
tail = strstr(attr, "/*/");
|
|
if (!tail)
|
|
return 0;
|
|
|
|
len = tail - attr + 1; /* include slash at the end */
|
|
tail += 2; /* include slash at the beginning */
|
|
|
|
p = buf;
|
|
size = sizeof(buf);
|
|
size -= strnpcpy(&p, size, attr, len);
|
|
|
|
dir = opendir(buf);
|
|
if (!dir)
|
|
return -errno;
|
|
|
|
FOREACH_DIRENT_ALL(dent, dir, break) {
|
|
if (dent->d_name[0] == '.')
|
|
continue;
|
|
|
|
strscpyl(p, size, dent->d_name, tail, NULL);
|
|
if (faccessat(dirfd(dir), p, F_OK, 0) < 0)
|
|
continue;
|
|
|
|
strcpy(attr, buf);
|
|
return 0;
|
|
}
|
|
|
|
return -ENOENT;
|
|
}
|
|
|
|
static int udev_rule_apply_token_to_event(
|
|
UdevRules *rules,
|
|
sd_device *dev,
|
|
UdevEvent *event,
|
|
usec_t timeout_usec,
|
|
Hashmap *properties_list) {
|
|
|
|
UdevRuleToken *token;
|
|
char buf[UTIL_PATH_SIZE];
|
|
const char *val;
|
|
size_t count;
|
|
bool match;
|
|
int r;
|
|
|
|
assert(rules);
|
|
assert(dev);
|
|
assert(event);
|
|
|
|
/* This returns the following values:
|
|
* 0 on the current token does not match the event,
|
|
* 1 on the current token matches the event, and
|
|
* negative errno on some critical errors. */
|
|
|
|
token = rules->current_file->current_line->current_token;
|
|
|
|
switch (token->type) {
|
|
case TK_M_ACTION: {
|
|
DeviceAction a;
|
|
|
|
r = device_get_action(dev, &a);
|
|
if (r < 0)
|
|
return log_rule_error_errno(dev, rules, r, "Failed to get uevent action type: %m");
|
|
|
|
return token_match_string(token, device_action_to_string(a));
|
|
}
|
|
case TK_M_DEVPATH:
|
|
r = sd_device_get_devpath(dev, &val);
|
|
if (r < 0)
|
|
return log_rule_error_errno(dev, rules, r, "Failed to get devpath: %m");
|
|
|
|
return token_match_string(token, val);
|
|
case TK_M_KERNEL:
|
|
case TK_M_PARENTS_KERNEL:
|
|
r = sd_device_get_sysname(dev, &val);
|
|
if (r < 0)
|
|
return log_rule_error_errno(dev, rules, r, "Failed to get sysname: %m");
|
|
|
|
return token_match_string(token, val);
|
|
case TK_M_DEVLINK:
|
|
FOREACH_DEVICE_DEVLINK(dev, val)
|
|
if (token_match_string(token, strempty(startswith(val, "/dev/"))))
|
|
return token->op == OP_MATCH;
|
|
return token->op == OP_NOMATCH;
|
|
case TK_M_NAME:
|
|
return token_match_string(token, event->name);
|
|
case TK_M_ENV:
|
|
if (sd_device_get_property_value(dev, (const char*) token->data, &val) < 0)
|
|
val = hashmap_get(properties_list, token->data);
|
|
|
|
return token_match_string(token, val);
|
|
case TK_M_CONST: {
|
|
const char *k = token->data;
|
|
|
|
if (streq(k, "arch"))
|
|
val = architecture_to_string(uname_architecture());
|
|
else if (streq(k, "virt"))
|
|
val = virtualization_to_string(detect_virtualization());
|
|
else
|
|
assert_not_reached("Invalid CONST key");
|
|
return token_match_string(token, val);
|
|
}
|
|
case TK_M_TAG:
|
|
case TK_M_PARENTS_TAG:
|
|
FOREACH_DEVICE_TAG(dev, val)
|
|
if (token_match_string(token, val))
|
|
return token->op == OP_MATCH;
|
|
return token->op == OP_NOMATCH;
|
|
case TK_M_SUBSYSTEM:
|
|
case TK_M_PARENTS_SUBSYSTEM:
|
|
r = sd_device_get_subsystem(dev, &val);
|
|
if (r == -ENOENT)
|
|
val = NULL;
|
|
else if (r < 0)
|
|
return log_rule_error_errno(dev, rules, r, "Failed to get subsystem: %m");
|
|
|
|
return token_match_string(token, val);
|
|
case TK_M_DRIVER:
|
|
case TK_M_PARENTS_DRIVER:
|
|
r = sd_device_get_driver(dev, &val);
|
|
if (r == -ENOENT)
|
|
val = NULL;
|
|
else if (r < 0)
|
|
return log_rule_error_errno(dev, rules, r, "Failed to get driver: %m");
|
|
|
|
return token_match_string(token, val);
|
|
case TK_M_ATTR:
|
|
case TK_M_PARENTS_ATTR:
|
|
return token_match_attr(token, dev, event);
|
|
case TK_M_SYSCTL: {
|
|
_cleanup_free_ char *value = NULL;
|
|
|
|
(void) udev_event_apply_format(event, (const char*) token->data, buf, sizeof(buf), false);
|
|
r = sysctl_read(sysctl_normalize(buf), &value);
|
|
if (r < 0 && r != -ENOENT)
|
|
return log_rule_error_errno(dev, rules, r, "Failed to read sysctl '%s': %m", buf);
|
|
|
|
return token_match_string(token, strstrip(value));
|
|
}
|
|
case TK_M_TEST: {
|
|
mode_t mode = PTR_TO_MODE(token->data);
|
|
struct stat statbuf;
|
|
|
|
(void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false);
|
|
if (!path_is_absolute(buf) &&
|
|
util_resolve_subsys_kernel(buf, buf, sizeof(buf), false) < 0) {
|
|
char tmp[UTIL_PATH_SIZE];
|
|
|
|
r = sd_device_get_syspath(dev, &val);
|
|
if (r < 0)
|
|
return log_rule_error_errno(dev, rules, r, "Failed to get syspath: %m");
|
|
|
|
strscpy(tmp, sizeof(tmp), buf);
|
|
strscpyl(buf, sizeof(buf), val, "/", tmp, NULL);
|
|
}
|
|
|
|
r = attr_subst_subdir(buf);
|
|
if (r == -ENOENT)
|
|
return token->op == OP_NOMATCH;
|
|
if (r < 0)
|
|
return log_rule_error_errno(dev, rules, r, "Failed to test the existence of '%s': %m", buf);
|
|
|
|
if (stat(buf, &statbuf) < 0)
|
|
return token->op == OP_NOMATCH;
|
|
|
|
if (mode == MODE_INVALID)
|
|
return token->op == OP_MATCH;
|
|
|
|
match = (statbuf.st_mode & mode) > 0;
|
|
return token->op == (match ? OP_MATCH : OP_NOMATCH);
|
|
}
|
|
case TK_M_PROGRAM: {
|
|
char result[UTIL_LINE_SIZE];
|
|
|
|
event->program_result = mfree(event->program_result);
|
|
(void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false);
|
|
log_rule_debug(dev, rules, "Running PROGRAM '%s'", buf);
|
|
|
|
r = udev_event_spawn(event, timeout_usec, true, buf, result, sizeof(result));
|
|
if (r != 0) {
|
|
if (r < 0)
|
|
log_rule_warning_errno(dev, rules, r, "Failed to execute '%s', ignoring: %m", buf);
|
|
else /* returned value is positive when program fails */
|
|
log_rule_debug(dev, rules, "Command \"%s\" returned %d (error), ignoring", buf, r);
|
|
return token->op == OP_NOMATCH;
|
|
}
|
|
|
|
delete_trailing_chars(result, "\n");
|
|
count = util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT);
|
|
if (count > 0)
|
|
log_rule_debug(dev, rules, "Replaced %zu character(s) from result of '%s'",
|
|
count, buf);
|
|
|
|
event->program_result = strdup(result);
|
|
return token->op == OP_MATCH;
|
|
}
|
|
case TK_M_IMPORT_FILE: {
|
|
_cleanup_fclose_ FILE *f = NULL;
|
|
|
|
(void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false);
|
|
log_rule_debug(dev, rules, "Importing properties from '%s'", buf);
|
|
|
|
f = fopen(buf, "re");
|
|
if (!f) {
|
|
if (errno != ENOENT)
|
|
return log_rule_error_errno(dev, rules, errno,
|
|
"Failed to open '%s': %m", buf);
|
|
return token->op == OP_NOMATCH;
|
|
}
|
|
|
|
for (;;) {
|
|
_cleanup_free_ char *line = NULL;
|
|
char *key, *value;
|
|
|
|
r = read_line(f, LONG_LINE_MAX, &line);
|
|
if (r < 0) {
|
|
log_rule_debug_errno(dev, rules, r,
|
|
"Failed to read '%s', ignoring: %m", buf);
|
|
return token->op == OP_NOMATCH;
|
|
}
|
|
if (r == 0)
|
|
break;
|
|
|
|
r = get_property_from_string(line, &key, &value);
|
|
if (r < 0) {
|
|
log_rule_debug_errno(dev, rules, r,
|
|
"Failed to parse key and value from '%s', ignoring: %m",
|
|
line);
|
|
continue;
|
|
}
|
|
if (r == 0)
|
|
continue;
|
|
|
|
r = device_add_property(dev, key, value);
|
|
if (r < 0)
|
|
return log_rule_error_errno(dev, rules, r,
|
|
"Failed to add property %s=%s: %m",
|
|
key, value);
|
|
}
|
|
|
|
return token->op == OP_MATCH;
|
|
}
|
|
case TK_M_IMPORT_PROGRAM: {
|
|
char result[UTIL_LINE_SIZE], *line, *pos;
|
|
|
|
(void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false);
|
|
log_rule_debug(dev, rules, "Importing properties from results of '%s'", buf);
|
|
|
|
r = udev_event_spawn(event, timeout_usec, true, buf, result, sizeof result);
|
|
if (r != 0) {
|
|
if (r < 0)
|
|
log_rule_warning_errno(dev, rules, r, "Failed to execute '%s', ignoring: %m", buf);
|
|
else /* returned value is positive when program fails */
|
|
log_rule_debug(dev, rules, "Command \"%s\" returned %d (error), ignoring", buf, r);
|
|
return token->op == OP_NOMATCH;
|
|
}
|
|
|
|
for (line = result; !isempty(line); line = pos) {
|
|
char *key, *value;
|
|
|
|
pos = strchr(line, '\n');
|
|
if (pos)
|
|
*pos++ = '\0';
|
|
|
|
r = get_property_from_string(line, &key, &value);
|
|
if (r < 0) {
|
|
log_rule_debug_errno(dev, rules, r,
|
|
"Failed to parse key and value from '%s', ignoring: %m",
|
|
line);
|
|
continue;
|
|
}
|
|
if (r == 0)
|
|
continue;
|
|
|
|
r = device_add_property(dev, key, value);
|
|
if (r < 0)
|
|
return log_rule_error_errno(dev, rules, r,
|
|
"Failed to add property %s=%s: %m",
|
|
key, value);
|
|
}
|
|
|
|
return token->op == OP_MATCH;
|
|
}
|
|
case TK_M_IMPORT_BUILTIN: {
|
|
UdevBuiltinCommand cmd = PTR_TO_UDEV_BUILTIN_CMD(token->data);
|
|
unsigned mask = 1U << (int) cmd;
|
|
|
|
if (udev_builtin_run_once(cmd)) {
|
|
/* check if we ran already */
|
|
if (event->builtin_run & mask) {
|
|
log_rule_debug(dev, rules, "Skipping builtin '%s' in IMPORT key",
|
|
udev_builtin_name(cmd));
|
|
/* return the result from earlier run */
|
|
return token->op == (event->builtin_ret & mask ? OP_NOMATCH : OP_MATCH);
|
|
}
|
|
/* mark as ran */
|
|
event->builtin_run |= mask;
|
|
}
|
|
|
|
(void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false);
|
|
log_rule_debug(dev, rules, "Importing properties from results of builtin command '%s'", buf);
|
|
|
|
r = udev_builtin_run(dev, cmd, buf, false);
|
|
if (r < 0) {
|
|
/* remember failure */
|
|
log_rule_debug_errno(dev, rules, r, "Failed to run builtin '%s': %m", buf);
|
|
event->builtin_ret |= mask;
|
|
}
|
|
return token->op == (r >= 0 ? OP_MATCH : OP_NOMATCH);
|
|
}
|
|
case TK_M_IMPORT_DB: {
|
|
if (!event->dev_db_clone)
|
|
return token->op == OP_NOMATCH;
|
|
r = sd_device_get_property_value(event->dev_db_clone, token->value, &val);
|
|
if (r == -ENOENT)
|
|
return token->op == OP_NOMATCH;
|
|
if (r < 0)
|
|
return log_rule_error_errno(dev, rules, r,
|
|
"Failed to get property '%s' from database: %m",
|
|
token->value);
|
|
|
|
r = device_add_property(dev, token->value, val);
|
|
if (r < 0)
|
|
return log_rule_error_errno(dev, rules, r, "Failed to add property '%s=%s': %m",
|
|
token->value, val);
|
|
return token->op == OP_MATCH;
|
|
}
|
|
case TK_M_IMPORT_CMDLINE: {
|
|
_cleanup_free_ char *value = NULL;
|
|
|
|
r = proc_cmdline_get_key(token->value, PROC_CMDLINE_VALUE_OPTIONAL, &value);
|
|
if (r < 0)
|
|
return log_rule_error_errno(dev, rules, r,
|
|
"Failed to read '%s' option from /proc/cmdline: %m",
|
|
token->value);
|
|
if (r == 0)
|
|
return token->op == OP_NOMATCH;
|
|
|
|
r = device_add_property(dev, token->value, value ?: "1");
|
|
if (r < 0)
|
|
return log_rule_error_errno(dev, rules, r, "Failed to add property '%s=%s': %m",
|
|
token->value, value ?: "1");
|
|
return token->op == OP_MATCH;
|
|
}
|
|
case TK_M_IMPORT_PARENT: {
|
|
(void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false);
|
|
r = import_parent_into_properties(dev, buf);
|
|
if (r < 0)
|
|
return log_rule_error_errno(dev, rules, r,
|
|
"Failed to import properties '%s' from parent: %m",
|
|
buf);
|
|
return token->op == (r > 0 ? OP_MATCH : OP_NOMATCH);
|
|
}
|
|
case TK_M_RESULT:
|
|
return token_match_string(token, event->program_result);
|
|
case TK_A_OPTIONS_STRING_ESCAPE_NONE:
|
|
event->esc = ESCAPE_NONE;
|
|
break;
|
|
case TK_A_OPTIONS_STRING_ESCAPE_REPLACE:
|
|
event->esc = ESCAPE_REPLACE;
|
|
break;
|
|
case TK_A_OPTIONS_DB_PERSIST:
|
|
device_set_db_persist(dev);
|
|
break;
|
|
case TK_A_OPTIONS_INOTIFY_WATCH:
|
|
if (event->inotify_watch_final)
|
|
break;
|
|
if (token->op == OP_ASSIGN_FINAL)
|
|
event->inotify_watch_final = true;
|
|
|
|
event->inotify_watch = token->data;
|
|
break;
|
|
case TK_A_OPTIONS_DEVLINK_PRIORITY:
|
|
device_set_devlink_priority(dev, PTR_TO_INT(token->data));
|
|
break;
|
|
case TK_A_OWNER: {
|
|
char owner[UTIL_NAME_SIZE];
|
|
const char *ow = owner;
|
|
|
|
if (event->owner_final)
|
|
break;
|
|
if (token->op == OP_ASSIGN_FINAL)
|
|
event->owner_final = true;
|
|
|
|
(void) udev_event_apply_format(event, token->value, owner, sizeof(owner), false);
|
|
r = get_user_creds(&ow, &event->uid, NULL, NULL, NULL, USER_CREDS_ALLOW_MISSING);
|
|
if (r < 0)
|
|
log_unknown_owner(dev, rules, r, "user", owner);
|
|
else
|
|
log_rule_debug(dev, rules, "OWNER %s(%u)", owner, event->uid);
|
|
break;
|
|
}
|
|
case TK_A_GROUP: {
|
|
char group[UTIL_NAME_SIZE];
|
|
const char *gr = group;
|
|
|
|
if (event->group_final)
|
|
break;
|
|
if (token->op == OP_ASSIGN_FINAL)
|
|
event->group_final = true;
|
|
|
|
(void) udev_event_apply_format(event, token->value, group, sizeof(group), false);
|
|
r = get_group_creds(&gr, &event->gid, USER_CREDS_ALLOW_MISSING);
|
|
if (r < 0)
|
|
log_unknown_owner(dev, rules, r, "group", group);
|
|
else
|
|
log_rule_debug(dev, rules, "GROUP %s(%u)", group, event->gid);
|
|
break;
|
|
}
|
|
case TK_A_MODE: {
|
|
char mode_str[UTIL_NAME_SIZE];
|
|
|
|
if (event->mode_final)
|
|
break;
|
|
if (token->op == OP_ASSIGN_FINAL)
|
|
event->mode_final = true;
|
|
|
|
(void) udev_event_apply_format(event, token->value, mode_str, sizeof(mode_str), false);
|
|
r = parse_mode(mode_str, &event->mode);
|
|
if (r < 0)
|
|
log_rule_error_errno(dev, rules, r, "Failed to parse mode '%s', ignoring: %m", mode_str);
|
|
else
|
|
log_rule_debug(dev, rules, "MODE %#o", event->mode);
|
|
break;
|
|
}
|
|
case TK_A_OWNER_ID:
|
|
if (event->owner_final)
|
|
break;
|
|
if (token->op == OP_ASSIGN_FINAL)
|
|
event->owner_final = true;
|
|
if (!token->data)
|
|
break;
|
|
event->uid = PTR_TO_UID(token->data);
|
|
log_rule_debug(dev, rules, "OWNER %u", event->uid);
|
|
break;
|
|
case TK_A_GROUP_ID:
|
|
if (event->group_final)
|
|
break;
|
|
if (token->op == OP_ASSIGN_FINAL)
|
|
event->group_final = true;
|
|
if (!token->data)
|
|
break;
|
|
event->gid = PTR_TO_GID(token->data);
|
|
log_rule_debug(dev, rules, "GROUP %u", event->gid);
|
|
break;
|
|
case TK_A_MODE_ID:
|
|
if (event->mode_final)
|
|
break;
|
|
if (token->op == OP_ASSIGN_FINAL)
|
|
event->mode_final = true;
|
|
if (!token->data)
|
|
break;
|
|
event->mode = PTR_TO_MODE(token->data);
|
|
log_rule_debug(dev, rules, "MODE %#o", event->mode);
|
|
break;
|
|
case TK_A_SECLABEL: {
|
|
_cleanup_free_ char *name = NULL, *label = NULL;
|
|
char label_str[UTIL_LINE_SIZE] = {};
|
|
|
|
name = strdup((const char*) token->data);
|
|
if (!name)
|
|
return log_oom();
|
|
|
|
(void) udev_event_apply_format(event, token->value, label_str, sizeof(label_str), false);
|
|
if (!isempty(label_str))
|
|
label = strdup(label_str);
|
|
else
|
|
label = strdup(token->value);
|
|
if (!label)
|
|
return log_oom();
|
|
|
|
if (token->op == OP_ASSIGN)
|
|
ordered_hashmap_clear_free_free(event->seclabel_list);
|
|
|
|
r = ordered_hashmap_ensure_allocated(&event->seclabel_list, NULL);
|
|
if (r < 0)
|
|
return log_oom();
|
|
|
|
r = ordered_hashmap_put(event->seclabel_list, name, label);
|
|
if (r < 0)
|
|
return log_oom();
|
|
log_rule_debug(dev, rules, "SECLABEL{%s}='%s'", name, label);
|
|
name = label = NULL;
|
|
break;
|
|
}
|
|
case TK_A_ENV: {
|
|
const char *name = (const char*) token->data;
|
|
char value_new[UTIL_NAME_SIZE], *p = value_new;
|
|
size_t l = sizeof(value_new);
|
|
|
|
if (isempty(token->value)) {
|
|
if (token->op == OP_ADD)
|
|
break;
|
|
r = device_add_property(dev, name, NULL);
|
|
if (r < 0)
|
|
return log_rule_error_errno(dev, rules, r, "Failed to remove property '%s': %m", name);
|
|
break;
|
|
}
|
|
|
|
if (token->op == OP_ADD &&
|
|
sd_device_get_property_value(dev, name, &val) >= 0)
|
|
l = strpcpyl(&p, l, val, " ", NULL);
|
|
|
|
(void) udev_event_apply_format(event, token->value, p, l, false);
|
|
|
|
r = device_add_property(dev, name, value_new);
|
|
if (r < 0)
|
|
return log_rule_error_errno(dev, rules, r, "Failed to add property '%s=%s': %m", name, value_new);
|
|
break;
|
|
}
|
|
case TK_A_TAG: {
|
|
(void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false);
|
|
if (token->op == OP_ASSIGN)
|
|
device_cleanup_tags(dev);
|
|
|
|
if (buf[strspn(buf, ALPHANUMERICAL "-_")] != '\0') {
|
|
log_rule_error(dev, rules, "Invalid tag name '%s', ignoring", buf);
|
|
break;
|
|
}
|
|
if (token->op == OP_REMOVE)
|
|
device_remove_tag(dev, buf);
|
|
else {
|
|
r = device_add_tag(dev, buf);
|
|
if (r < 0)
|
|
return log_rule_error_errno(dev, rules, r, "Failed to add tag '%s': %m", buf);
|
|
}
|
|
break;
|
|
}
|
|
case TK_A_NAME: {
|
|
if (event->name_final)
|
|
break;
|
|
if (token->op == OP_ASSIGN_FINAL)
|
|
event->name_final = true;
|
|
|
|
(void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false);
|
|
if (IN_SET(event->esc, ESCAPE_UNSET, ESCAPE_REPLACE)) {
|
|
count = util_replace_chars(buf, "/");
|
|
if (count > 0)
|
|
log_rule_debug(dev, rules, "Replaced %zu character(s) from result of NAME=\"%s\"",
|
|
count, token->value);
|
|
}
|
|
if (sd_device_get_devnum(dev, NULL) >= 0 &&
|
|
(sd_device_get_devname(dev, &val) < 0 ||
|
|
!streq_ptr(buf, startswith(val, "/dev/")))) {
|
|
log_rule_error(dev, rules,
|
|
"Kernel device nodes cannot be renamed, ignoring NAME=\"%s\"; please fix it.",
|
|
token->value);
|
|
break;
|
|
}
|
|
if (free_and_strdup(&event->name, buf) < 0)
|
|
return log_oom();
|
|
|
|
log_rule_debug(dev, rules, "NAME '%s'", event->name);
|
|
break;
|
|
}
|
|
case TK_A_DEVLINK: {
|
|
char *p;
|
|
|
|
if (event->devlink_final)
|
|
break;
|
|
if (sd_device_get_devnum(dev, NULL) < 0)
|
|
break;
|
|
if (token->op == OP_ASSIGN_FINAL)
|
|
event->devlink_final = true;
|
|
if (IN_SET(token->op, OP_ASSIGN, OP_ASSIGN_FINAL))
|
|
device_cleanup_devlinks(dev);
|
|
|
|
/* allow multiple symlinks separated by spaces */
|
|
(void) udev_event_apply_format(event, token->value, buf, sizeof(buf), event->esc != ESCAPE_NONE);
|
|
if (event->esc == ESCAPE_UNSET)
|
|
count = util_replace_chars(buf, "/ ");
|
|
else if (event->esc == ESCAPE_REPLACE)
|
|
count = util_replace_chars(buf, "/");
|
|
else
|
|
count = 0;
|
|
if (count > 0)
|
|
log_rule_debug(dev, rules, "Replaced %zu character(s) from result of LINK", count);
|
|
|
|
p = skip_leading_chars(buf, NULL);
|
|
while (!isempty(p)) {
|
|
char filename[UTIL_PATH_SIZE], *next;
|
|
|
|
next = strchr(p, ' ');
|
|
if (next) {
|
|
*next++ = '\0';
|
|
next = skip_leading_chars(next, NULL);
|
|
}
|
|
|
|
strscpyl(filename, sizeof(filename), "/dev/", p, NULL);
|
|
r = device_add_devlink(dev, filename);
|
|
if (r < 0)
|
|
return log_rule_error_errno(dev, rules, r, "Failed to add devlink '%s': %m", filename);
|
|
|
|
log_rule_debug(dev, rules, "LINK '%s'", p);
|
|
p = next;
|
|
}
|
|
break;
|
|
}
|
|
case TK_A_ATTR: {
|
|
const char *key_name = (const char*) token->data;
|
|
char value[UTIL_NAME_SIZE];
|
|
|
|
if (util_resolve_subsys_kernel(key_name, buf, sizeof(buf), false) < 0 &&
|
|
sd_device_get_syspath(dev, &val) >= 0)
|
|
strscpyl(buf, sizeof(buf), val, "/", key_name, NULL);
|
|
|
|
r = attr_subst_subdir(buf);
|
|
if (r < 0) {
|
|
log_rule_error_errno(dev, rules, r, "Could not find file matches '%s', ignoring: %m", buf);
|
|
break;
|
|
}
|
|
(void) udev_event_apply_format(event, token->value, value, sizeof(value), false);
|
|
|
|
log_rule_debug(dev, rules, "ATTR '%s' writing '%s'", buf, value);
|
|
r = write_string_file(buf, value, WRITE_STRING_FILE_VERIFY_ON_FAILURE | WRITE_STRING_FILE_DISABLE_BUFFER | WRITE_STRING_FILE_AVOID_NEWLINE);
|
|
if (r < 0)
|
|
log_rule_error_errno(dev, rules, r, "Failed to write ATTR{%s}, ignoring: %m", buf);
|
|
break;
|
|
}
|
|
case TK_A_SYSCTL: {
|
|
char value[UTIL_NAME_SIZE];
|
|
|
|
(void) udev_event_apply_format(event, (const char*) token->data, buf, sizeof(buf), false);
|
|
(void) udev_event_apply_format(event, token->value, value, sizeof(value), false);
|
|
sysctl_normalize(buf);
|
|
log_rule_debug(dev, rules, "SYSCTL '%s' writing '%s'", buf, value);
|
|
r = sysctl_write(buf, value);
|
|
if (r < 0)
|
|
log_rule_error_errno(dev, rules, r, "Failed to write SYSCTL{%s}='%s', ignoring: %m", buf, value);
|
|
break;
|
|
}
|
|
case TK_A_RUN_BUILTIN:
|
|
case TK_A_RUN_PROGRAM: {
|
|
_cleanup_free_ char *cmd = NULL;
|
|
|
|
if (event->run_final)
|
|
break;
|
|
if (token->op == OP_ASSIGN_FINAL)
|
|
event->run_final = true;
|
|
|
|
if (IN_SET(token->op, OP_ASSIGN, OP_ASSIGN_FINAL))
|
|
ordered_hashmap_clear_free_key(event->run_list);
|
|
|
|
r = ordered_hashmap_ensure_allocated(&event->run_list, NULL);
|
|
if (r < 0)
|
|
return log_oom();
|
|
|
|
(void) udev_event_apply_format(event, token->value, buf, sizeof(buf), false);
|
|
|
|
cmd = strdup(buf);
|
|
if (!cmd)
|
|
return log_oom();
|
|
|
|
r = ordered_hashmap_put(event->run_list, cmd, token->data);
|
|
if (r < 0)
|
|
return log_oom();
|
|
|
|
TAKE_PTR(cmd);
|
|
|
|
log_rule_debug(dev, rules, "RUN '%s'", token->value);
|
|
break;
|
|
}
|
|
case TK_A_OPTIONS_STATIC_NODE:
|
|
/* do nothing for events. */
|
|
break;
|
|
default:
|
|
assert_not_reached("Invalid token type");
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool token_is_for_parents(UdevRuleToken *token) {
|
|
return token->type >= TK_M_PARENTS_KERNEL && token->type <= TK_M_PARENTS_TAG;
|
|
}
|
|
|
|
static int udev_rule_apply_parent_token_to_event(
|
|
UdevRules *rules,
|
|
UdevEvent *event) {
|
|
|
|
UdevRuleLine *line;
|
|
UdevRuleToken *head;
|
|
int r;
|
|
|
|
line = rules->current_file->current_line;
|
|
head = rules->current_file->current_line->current_token;
|
|
event->dev_parent = event->dev;
|
|
for (;;) {
|
|
LIST_FOREACH(tokens, line->current_token, head) {
|
|
if (!token_is_for_parents(line->current_token))
|
|
return true; /* All parent tokens match. */
|
|
r = udev_rule_apply_token_to_event(rules, event->dev_parent, event, 0, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
if (r == 0)
|
|
break;
|
|
}
|
|
if (!line->current_token)
|
|
/* All parent tokens match. But no assign tokens in the line. Hmm... */
|
|
return true;
|
|
|
|
if (sd_device_get_parent(event->dev_parent, &event->dev_parent) < 0) {
|
|
event->dev_parent = NULL;
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int udev_rule_apply_line_to_event(
|
|
UdevRules *rules,
|
|
UdevEvent *event,
|
|
usec_t timeout_usec,
|
|
Hashmap *properties_list,
|
|
UdevRuleLine **next_line) {
|
|
|
|
UdevRuleLine *line = rules->current_file->current_line;
|
|
UdevRuleLineType mask = LINE_HAS_GOTO | LINE_UPDATE_SOMETHING;
|
|
UdevRuleToken *token, *next_token;
|
|
bool parents_done = false;
|
|
DeviceAction action;
|
|
int r;
|
|
|
|
r = device_get_action(event->dev, &action);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (action != DEVICE_ACTION_REMOVE) {
|
|
if (sd_device_get_devnum(event->dev, NULL) >= 0)
|
|
mask |= LINE_HAS_DEVLINK;
|
|
|
|
if (sd_device_get_ifindex(event->dev, NULL) >= 0)
|
|
mask |= LINE_HAS_NAME;
|
|
}
|
|
|
|
if ((line->type & mask) == 0)
|
|
return 0;
|
|
|
|
event->esc = ESCAPE_UNSET;
|
|
LIST_FOREACH_SAFE(tokens, token, next_token, line->tokens) {
|
|
line->current_token = token;
|
|
|
|
if (token_is_for_parents(token)) {
|
|
if (parents_done)
|
|
continue;
|
|
|
|
r = udev_rule_apply_parent_token_to_event(rules, event);
|
|
if (r <= 0)
|
|
return r;
|
|
|
|
parents_done = true;
|
|
continue;
|
|
}
|
|
|
|
r = udev_rule_apply_token_to_event(rules, event->dev, event, timeout_usec, properties_list);
|
|
if (r <= 0)
|
|
return r;
|
|
}
|
|
|
|
if (line->goto_line)
|
|
*next_line = line->goto_line;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int udev_rules_apply_to_event(
|
|
UdevRules *rules,
|
|
UdevEvent *event,
|
|
usec_t timeout_usec,
|
|
Hashmap *properties_list) {
|
|
|
|
UdevRuleFile *file;
|
|
UdevRuleLine *next_line;
|
|
int r;
|
|
|
|
assert(rules);
|
|
assert(event);
|
|
|
|
LIST_FOREACH(rule_files, file, rules->rule_files) {
|
|
rules->current_file = file;
|
|
LIST_FOREACH_SAFE(rule_lines, file->current_line, next_line, file->rule_lines) {
|
|
r = udev_rule_apply_line_to_event(rules, event, timeout_usec, properties_list, &next_line);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int apply_static_dev_perms(const char *devnode, uid_t uid, gid_t gid, mode_t mode, char **tags) {
|
|
char device_node[UTIL_PATH_SIZE], tags_dir[UTIL_PATH_SIZE], tag_symlink[UTIL_PATH_SIZE];
|
|
_cleanup_free_ char *unescaped_filename = NULL;
|
|
struct stat stats;
|
|
char **t;
|
|
int r;
|
|
|
|
assert(devnode);
|
|
|
|
if (uid == UID_INVALID && gid == GID_INVALID && mode == MODE_INVALID && !tags)
|
|
return 0;
|
|
|
|
strscpyl(device_node, sizeof(device_node), "/dev/", devnode, NULL);
|
|
if (stat(device_node, &stats) < 0) {
|
|
if (errno != ENOENT)
|
|
return log_error_errno(errno, "Failed to stat %s: %m", device_node);
|
|
return 0;
|
|
}
|
|
|
|
if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode)) {
|
|
log_warning("%s is neither block nor character device, ignoring.", device_node);
|
|
return 0;
|
|
}
|
|
|
|
if (!strv_isempty(tags)) {
|
|
unescaped_filename = xescape(devnode, "/.");
|
|
if (!unescaped_filename)
|
|
return log_oom();
|
|
}
|
|
|
|
/* export the tags to a directory as symlinks, allowing otherwise dead nodes to be tagged */
|
|
STRV_FOREACH(t, tags) {
|
|
strscpyl(tags_dir, sizeof(tags_dir), "/run/udev/static_node-tags/", *t, "/", NULL);
|
|
r = mkdir_p(tags_dir, 0755);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to create %s: %m", tags_dir);
|
|
|
|
strscpyl(tag_symlink, sizeof(tag_symlink), tags_dir, unescaped_filename, NULL);
|
|
r = symlink(device_node, tag_symlink);
|
|
if (r < 0 && errno != EEXIST)
|
|
return log_error_errno(errno, "Failed to create symlink %s -> %s: %m",
|
|
tag_symlink, device_node);
|
|
}
|
|
|
|
/* don't touch the permissions if only the tags were set */
|
|
if (uid == UID_INVALID && gid == GID_INVALID && mode == MODE_INVALID)
|
|
return 0;
|
|
|
|
if (mode == MODE_INVALID)
|
|
mode = gid_is_valid(gid) ? 0660 : 0600;
|
|
if (!uid_is_valid(uid))
|
|
uid = 0;
|
|
if (!gid_is_valid(gid))
|
|
gid = 0;
|
|
|
|
r = chmod_and_chown(device_node, mode, uid, gid);
|
|
if (r == -ENOENT)
|
|
return 0;
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to chown '%s' %u %u: %m", device_node, uid, gid);
|
|
else
|
|
log_debug("chown '%s' %u:%u with mode %#o", device_node, uid, gid, mode);
|
|
|
|
(void) utimensat(AT_FDCWD, device_node, NULL, 0);
|
|
return 0;
|
|
}
|
|
|
|
static int udev_rule_line_apply_static_dev_perms(UdevRuleLine *rule_line) {
|
|
UdevRuleToken *token;
|
|
_cleanup_strv_free_ char **tags = NULL;
|
|
uid_t uid = UID_INVALID;
|
|
gid_t gid = GID_INVALID;
|
|
mode_t mode = MODE_INVALID;
|
|
int r;
|
|
|
|
assert(rule_line);
|
|
|
|
if (!FLAGS_SET(rule_line->type, LINE_HAS_STATIC_NODE))
|
|
return 0;
|
|
|
|
LIST_FOREACH(tokens, token, rule_line->tokens)
|
|
if (token->type == TK_A_OWNER_ID)
|
|
uid = PTR_TO_UID(token->data);
|
|
else if (token->type == TK_A_GROUP_ID)
|
|
gid = PTR_TO_GID(token->data);
|
|
else if (token->type == TK_A_MODE_ID)
|
|
mode = PTR_TO_MODE(token->data);
|
|
else if (token->type == TK_A_TAG) {
|
|
r = strv_extend(&tags, token->value);
|
|
if (r < 0)
|
|
return log_oom();
|
|
} else if (token->type == TK_A_OPTIONS_STATIC_NODE) {
|
|
r = apply_static_dev_perms(token->value, uid, gid, mode, tags);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int udev_rules_apply_static_dev_perms(UdevRules *rules) {
|
|
UdevRuleFile *file;
|
|
UdevRuleLine *line;
|
|
int r;
|
|
|
|
assert(rules);
|
|
|
|
LIST_FOREACH(rule_files, file, rules->rule_files)
|
|
LIST_FOREACH(rule_lines, line, file->rule_lines) {
|
|
r = udev_rule_line_apply_static_dev_perms(line);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
return 0;
|
|
}
|