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authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2019-06-27 08:51:53 +0200
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2019-06-28 16:20:48 +0200
commite79c228b527cf5fd45a32edb0f8fff124a680cc3 (patch)
treea39c44d07cff0644e78dcebb077e1435c4d14389 /src/udev/udev-rules.c
parentd4114f704f71ba309e316e66499cd454b96d630c (diff)
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udev: move rule structure definitions into the .c file
They are (and should) only be used there, no need to expose them.
Diffstat (limited to 'src/udev/udev-rules.c')
-rw-r--r--src/udev/udev-rules.c146
1 files changed, 146 insertions, 0 deletions
diff --git a/src/udev/udev-rules.c b/src/udev/udev-rules.c
index 8ad346b7ac..40f743a033 100644
--- a/src/udev/udev-rules.c
+++ b/src/udev/udev-rules.c
@@ -14,6 +14,7 @@
#include "fs-util.h"
#include "glob-util.h"
#include "libudev-util.h"
+#include "list.h"
#include "mkdir.h"
#include "nulstr-util.h"
#include "parse-util.h"
@@ -31,6 +32,151 @@
#define RULES_DIRS (const char* const*) CONF_PATHS_STRV("udev/rules.d")
+typedef enum {
+ OP_MATCH, /* == */
+ OP_NOMATCH, /* != */
+ OP_ADD, /* += */
+ OP_REMOVE, /* -= */
+ OP_ASSIGN, /* = */
+ OP_ASSIGN_FINAL, /* := */
+ _OP_TYPE_MAX,
+ _OP_TYPE_INVALID = -1
+} UdevRuleOperatorType;
+
+typedef enum {
+ MATCH_TYPE_EMPTY, /* empty string */
+ MATCH_TYPE_PLAIN, /* no special characters */
+ MATCH_TYPE_GLOB, /* shell globs ?,*,[] */
+ MATCH_TYPE_SUBSYSTEM, /* "subsystem", "bus", or "class" */
+ _MATCH_TYPE_MAX,
+ _MATCH_TYPE_INVALID = -1
+} UdevRuleMatchType;
+
+typedef enum {
+ SUBST_TYPE_PLAIN, /* no substitution */
+ SUBST_TYPE_FORMAT, /* % or $ */
+ SUBST_TYPE_SUBSYS, /* "[<SUBSYSTEM>/<KERNEL>]<attribute>" format */
+ _SUBST_TYPE_MAX,
+ _SUBST_TYPE_INVALID = -1
+} UdevRuleSubstituteType;
+
+typedef enum {
+ /* lvalues which take match or nomatch operator */
+ TK_M_ACTION, /* string, device_get_action() */
+ TK_M_DEVPATH, /* path, sd_device_get_devpath() */
+ TK_M_KERNEL, /* string, sd_device_get_sysname() */
+ TK_M_DEVLINK, /* strv, sd_device_get_devlink_first(), sd_device_get_devlink_next() */
+ TK_M_NAME, /* string, name of network interface */
+ TK_M_ENV, /* string, device property, takes key through attribute */
+ TK_M_TAG, /* strv, sd_device_get_tag_first(), sd_device_get_tag_next() */
+ TK_M_SUBSYSTEM, /* string, sd_device_get_subsystem() */
+ TK_M_DRIVER, /* string, sd_device_get_driver() */
+ TK_M_ATTR, /* string, takes filename through attribute, sd_device_get_sysattr_value(), util_resolve_subsys_kernel(), etc. */
+ TK_M_SYSCTL, /* string, takes kernel parameter through attribute */
+
+ /* matches parent paramters */
+ TK_M_PARENTS_KERNEL, /* string */
+ TK_M_PARENTS_SUBSYSTEM, /* string */
+ TK_M_PARENTS_DRIVER, /* string */
+ TK_M_PARENTS_ATTR, /* string */
+ TK_M_PARENTS_TAG, /* strv */
+
+ TK_M_TEST, /* path, optionally mode_t can be specified by attribute, test the existence of a file */
+ TK_M_PROGRAM, /* string, execute a program */
+ TK_M_IMPORT_FILE, /* path */
+ TK_M_IMPORT_PROGRAM, /* string, import properties from the result of program */
+ TK_M_IMPORT_BUILTIN, /* string, import properties from the result of built-in command */
+ TK_M_IMPORT_DB, /* string, import properties from database */
+ TK_M_IMPORT_CMDLINE, /* string, kernel command line */
+ TK_M_IMPORT_PARENT, /* string, parent property */
+ TK_M_RESULT, /* string, result of TK_M_PROGRAM */
+
+#define _TK_M_MAX (TK_M_RESULT + 1)
+#define _TK_A_MIN _TK_M_MAX
+
+ /* lvalues which take one of assign operators */
+ TK_A_OPTIONS_STRING_ESCAPE_NONE, /* no argument */
+ TK_A_OPTIONS_STRING_ESCAPE_REPLACE, /* no argument */
+ TK_A_OPTIONS_DB_PERSIST, /* no argument */
+ TK_A_OPTIONS_INOTIFY_WATCH, /* boolean */
+ TK_A_OPTIONS_DEVLINK_PRIORITY, /* int */
+ TK_A_OWNER, /* user name */
+ TK_A_GROUP, /* group name */
+ TK_A_MODE, /* mode string */
+ TK_A_OWNER_ID, /* uid_t */
+ TK_A_GROUP_ID, /* gid_t */
+ TK_A_MODE_ID, /* mode_t */
+ TK_A_TAG, /* string */
+ TK_A_OPTIONS_STATIC_NODE, /* device path, /dev/... */
+ TK_A_SECLABEL, /* string with attribute */
+ TK_A_ENV, /* string with attribute */
+ TK_A_NAME, /* ifname */
+ TK_A_DEVLINK, /* string */
+ TK_A_ATTR, /* string with attribute */
+ TK_A_SYSCTL, /* string with attribute */
+ TK_A_RUN_BUILTIN, /* string */
+ TK_A_RUN_PROGRAM, /* string */
+
+ _TK_TYPE_MAX,
+ _TK_TYPE_INVALID = -1,
+} UdevRuleTokenType;
+
+typedef enum {
+ LINE_HAS_NAME = 1 << 0, /* has NAME= */
+ LINE_HAS_DEVLINK = 1 << 1, /* has SYMLINK=, OWNER=, GROUP= or MODE= */
+ LINE_HAS_STATIC_NODE = 1 << 2, /* has OPTIONS=static_node */
+ LINE_HAS_GOTO = 1 << 3, /* has GOTO= */
+ LINE_HAS_LABEL = 1 << 4, /* has LABEL= */
+ LINE_UPDATE_SOMETHING = 1 << 5, /* has other TK_A_* or TK_M_IMPORT tokens */
+} UdevRuleLineType;
+
+typedef struct UdevRuleFile UdevRuleFile;
+typedef struct UdevRuleLine UdevRuleLine;
+typedef struct UdevRuleToken UdevRuleToken;
+
+struct UdevRuleToken {
+ UdevRuleTokenType type:8;
+ UdevRuleOperatorType op:8;
+ UdevRuleMatchType match_type:8;
+ UdevRuleSubstituteType attr_subst_type:7;
+ bool attr_match_remove_trailing_whitespace:1;
+ const char *value;
+ void *data;
+ LIST_FIELDS(UdevRuleToken, tokens);
+};
+
+struct UdevRuleLine {
+ char *line;
+ unsigned line_number;
+ UdevRuleLineType type;
+
+ const char *label;
+ const char *goto_label;
+ UdevRuleLine *goto_line;
+
+ UdevRuleFile *rule_file;
+ UdevRuleToken *current_token;
+ LIST_HEAD(UdevRuleToken, tokens);
+ LIST_FIELDS(UdevRuleLine, rule_lines);
+};
+
+struct UdevRuleFile {
+ char *filename;
+ UdevRuleLine *current_line;
+ LIST_HEAD(UdevRuleLine, rule_lines);
+ LIST_FIELDS(UdevRuleFile, rule_files);
+};
+
+struct UdevRules {
+ usec_t dirs_ts_usec;
+ ResolveNameTiming resolve_name_timing;
+ Hashmap *known_users;
+ Hashmap *known_groups;
+ UdevRuleFile *current_file;
+ LIST_HEAD(UdevRuleFile, rule_files);
+};
+
+
/*** Logging helpers ***/
#define log_rule_full(device, rules, level, error, fmt, ...) \