X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udev%2Fudev-rules.c;h=221865c9dcd921b69b500a5b883218ed795a6f19;hp=96645e8f02ec6b1f82d4d5e06325bd23e4fb793d;hb=0e4fa2abfefd6fd955e8cada7caf2733dabc529e;hpb=9257ecfc191ede0029e3486fd50c85b080927d0b diff --git a/udev/udev-rules.c b/udev/udev-rules.c index 96645e8f0..221865c9d 100644 --- a/udev/udev-rules.c +++ b/udev/udev-rules.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2003-2009 Kay Sievers + * Copyright (C) 2003-2010 Kay Sievers * Copyright (C) 2008 Alan Jenkins * * This program is free software: you can redistribute it and/or modify @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -124,6 +125,7 @@ enum token_type { TK_M_DEVLINK, /* val */ TK_M_NAME, /* val */ TK_M_ENV, /* val, attr */ + TK_M_TAG, /* val */ TK_M_SUBSYSTEM, /* val */ TK_M_DRIVER, /* val */ TK_M_WAITFOR, /* val */ @@ -140,15 +142,15 @@ enum token_type { TK_M_PROGRAM, /* val */ TK_M_IMPORT_FILE, /* val */ TK_M_IMPORT_PROG, /* val */ + TK_M_IMPORT_DB, /* val */ + TK_M_IMPORT_CMDLINE, /* val */ TK_M_IMPORT_PARENT, /* val */ TK_M_RESULT, /* val */ TK_M_MAX, - TK_A_IGNORE_DEVICE, TK_A_STRING_ESCAPE_NONE, TK_A_STRING_ESCAPE_REPLACE, TK_A_INOTIFY_WATCH, /* int */ - TK_A_NUM_FAKE_PART, /* int */ TK_A_DEVLINK_PRIO, /* int */ TK_A_OWNER, /* val */ TK_A_GROUP, /* val */ @@ -156,15 +158,15 @@ enum token_type { TK_A_OWNER_ID, /* uid_t */ TK_A_GROUP_ID, /* gid_t */ TK_A_MODE_ID, /* mode_t */ + TK_A_STATIC_NODE, /* val */ TK_A_ENV, /* val, attr */ + TK_A_TAG, /* val */ TK_A_NAME, /* val */ TK_A_DEVLINK, /* val */ TK_A_EVENT_TIMEOUT, /* int */ - TK_A_IGNORE_REMOVE, TK_A_ATTR, /* val, attr */ TK_A_RUN, /* val, bool */ TK_A_GOTO, /* size_t */ - TK_A_LAST_RULE, TK_END, }; @@ -172,10 +174,12 @@ enum token_type { /* we try to pack stuff in a way that we take only 12 bytes per token */ struct token { union { - unsigned char type; /* same as in rule and key */ + unsigned char type; /* same in rule and key */ struct { enum token_type type:8; - unsigned int flags:8; + bool can_set_name:1; + bool has_static_node:1; + unsigned int unused:6; unsigned short token_count; unsigned int label_off; unsigned short filename_off; @@ -190,12 +194,12 @@ struct token { unsigned int value_off; union { unsigned int attr_off; - int ignore_error; + int devlink_unique; + int fail_on_error; unsigned int rule_goto; mode_t mode; uid_t uid; gid_t gid; - int num_fake_part; int devlink_prio; int event_timeout; int watch; @@ -255,6 +259,7 @@ static const char *token_str(enum token_type type) [TK_M_DEVLINK] = "M DEVLINK", [TK_M_NAME] = "M NAME", [TK_M_ENV] = "M ENV", + [TK_M_TAG] = "M TAG", [TK_M_SUBSYSTEM] = "M SUBSYSTEM", [TK_M_DRIVER] = "M DRIVER", [TK_M_WAITFOR] = "M WAITFOR", @@ -271,31 +276,31 @@ static const char *token_str(enum token_type type) [TK_M_PROGRAM] = "M PROGRAM", [TK_M_IMPORT_FILE] = "M IMPORT_FILE", [TK_M_IMPORT_PROG] = "M IMPORT_PROG", + [TK_M_IMPORT_DB] = "M IMPORT_DB", + [TK_M_IMPORT_CMDLINE] = "M IMPORT_CMDLINE", [TK_M_IMPORT_PARENT] = "M IMPORT_PARENT", [TK_M_RESULT] = "M RESULT", [TK_M_MAX] = "M MAX", - [TK_A_IGNORE_DEVICE] = "A IGNORE_DEVICE", [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE", [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE", [TK_A_INOTIFY_WATCH] = "A INOTIFY_WATCH", - [TK_A_NUM_FAKE_PART] = "A NUM_FAKE_PART", [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO", [TK_A_OWNER] = "A OWNER", [TK_A_GROUP] = "A GROUP", [TK_A_MODE] = "A MODE", [TK_A_OWNER_ID] = "A OWNER_ID", [TK_A_GROUP_ID] = "A GROUP_ID", + [TK_A_STATIC_NODE] = "A STATIC_NODE", [TK_A_MODE_ID] = "A MODE_ID", [TK_A_ENV] = "A ENV", + [TK_A_TAG] = "A ENV", [TK_A_NAME] = "A NAME", [TK_A_DEVLINK] = "A DEVLINK", [TK_A_EVENT_TIMEOUT] = "A EVENT_TIMEOUT", - [TK_A_IGNORE_REMOVE] = "A IGNORE_REMOVE", [TK_A_ATTR] = "A ATTR", [TK_A_RUN] = "A RUN", [TK_A_GOTO] = "A GOTO", - [TK_A_LAST_RULE] = "A LAST_RULE", [TK_END] = "END", }; @@ -318,11 +323,10 @@ static void dump_token(struct udev_rules *rules, struct token *token) const char *tk_ptr = (char *)token; unsigned int idx = (tk_ptr - tks_ptr) / sizeof(struct token); - dbg(rules->udev, "* RULE %s:%u, token: %u, count: %u, label: '%s', flags: 0x%02x\n", + dbg(rules->udev, "* RULE %s:%u, token: %u, count: %u, label: '%s'\n", &rules->buf[token->rule.filename_off], token->rule.filename_line, idx, token->rule.token_count, - &rules->buf[token->rule.label_off], - token->rule.flags); + &rules->buf[token->rule.label_off]); break; } case TK_M_ACTION: @@ -339,6 +343,8 @@ static void dump_token(struct udev_rules *rules, struct token *token) case TK_M_PROGRAM: case TK_M_IMPORT_FILE: case TK_M_IMPORT_PROG: + case TK_M_IMPORT_DB: + case TK_M_IMPORT_CMDLINE: case TK_M_IMPORT_PARENT: case TK_M_RESULT: case TK_A_NAME: @@ -358,11 +364,12 @@ static void dump_token(struct udev_rules *rules, struct token *token) dbg(rules->udev, "%s %s '%s' '%s'(%s)\n", token_str(type), operation_str(op), attr, value, string_glob_str(glob)); break; - case TK_A_IGNORE_DEVICE: + case TK_M_TAG: + case TK_A_TAG: + dbg(rules->udev, "%s %s '%s'\n", token_str(type), operation_str(op), value); + break; case TK_A_STRING_ESCAPE_NONE: case TK_A_STRING_ESCAPE_REPLACE: - case TK_A_LAST_RULE: - case TK_A_IGNORE_REMOVE: dbg(rules->udev, "%s\n", token_str(type)); break; case TK_M_TEST: @@ -372,11 +379,8 @@ static void dump_token(struct udev_rules *rules, struct token *token) case TK_A_INOTIFY_WATCH: dbg(rules->udev, "%s %u\n", token_str(type), token->key.watch); break; - case TK_A_NUM_FAKE_PART: - dbg(rules->udev, "%s %u\n", token_str(type), token->key.num_fake_part); - break; case TK_A_DEVLINK_PRIO: - dbg(rules->udev, "%s %s %u\n", token_str(type), operation_str(op), token->key.devlink_prio); + dbg(rules->udev, "%s %u\n", token_str(type), token->key.devlink_prio); break; case TK_A_OWNER_ID: dbg(rules->udev, "%s %s %u\n", token_str(type), operation_str(op), token->key.uid); @@ -387,8 +391,11 @@ static void dump_token(struct udev_rules *rules, struct token *token) case TK_A_MODE_ID: dbg(rules->udev, "%s %s %#o\n", token_str(type), operation_str(op), token->key.mode); break; + case TK_A_STATIC_NODE: + dbg(rules->udev, "%s '%s'\n", token_str(type), value); + break; case TK_A_EVENT_TIMEOUT: - dbg(rules->udev, "%s %s %u\n", token_str(type), operation_str(op), token->key.event_timeout); + dbg(rules->udev, "%s %u\n", token_str(type), token->key.event_timeout); break; case TK_A_GOTO: dbg(rules->udev, "%s '%s' %u\n", token_str(type), value, token->key.rule_goto); @@ -721,7 +728,7 @@ static int import_property_from_string(struct udev_device *dev, char *line) entry = udev_device_add_property(dev, key, val); /* store in db, skip private keys */ if (key[0] != '.') - udev_list_entry_set_flag(entry, 1); + udev_list_entry_set_flags(entry, 1); } return 0; } @@ -744,12 +751,12 @@ static int import_program_into_properties(struct udev_device *dev, const char *p { struct udev *udev = udev_device_get_udev(dev); char **envp; - char result[4096]; + char result[UTIL_LINE_SIZE]; size_t reslen; char *line; envp = udev_device_get_properties_envp(dev); - if (util_run_program(udev, program, envp, result, sizeof(result), &reslen) != 0) + if (util_run_program(udev, program, envp, result, sizeof(result), &reslen, NULL, false) != 0) return -1; line = result; @@ -789,7 +796,7 @@ static int import_parent_into_properties(struct udev_device *dev, const char *fi entry = udev_device_add_property(dev, key, val); /* store in db, skip private keys */ if (key[0] != '.') - udev_list_entry_set_flag(entry, 1); + udev_list_entry_set_flags(entry, 1); } } return 0; @@ -836,7 +843,7 @@ static int wait_for_file(struct udev_device *dev, const char *file, int timeout) static int attr_subst_subdir(char *attr, size_t len) { - int found = 0; + bool found = false; if (strstr(attr, "/*/")) { char *pos; @@ -861,7 +868,7 @@ static int attr_subst_subdir(char *attr, size_t len) continue; util_strscpyl(attr, len, dirname, "/", dent->d_name, tail, NULL); if (stat(attr, &stats) == 0) { - found = 1; + found = true; break; } } @@ -890,7 +897,7 @@ static int get_key(struct udev *udev, char **line, char **key, enum operation_ty return -1; *key = linepos; - while (1) { + for (;;) { linepos++; if (linepos[0] == '\0') return -1; @@ -1005,14 +1012,17 @@ static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type, case TK_M_PROGRAM: case TK_M_IMPORT_FILE: case TK_M_IMPORT_PROG: + case TK_M_IMPORT_DB: + case TK_M_IMPORT_CMDLINE: case TK_M_IMPORT_PARENT: case TK_M_RESULT: case TK_A_OWNER: case TK_A_GROUP: case TK_A_MODE: case TK_A_NAME: - case TK_A_DEVLINK: case TK_A_GOTO: + case TK_M_TAG: + case TK_A_TAG: token->key.value_off = add_string(rule_tmp->rules, value); break; case TK_M_ENV: @@ -1024,23 +1034,23 @@ static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type, token->key.value_off = add_string(rule_tmp->rules, value); token->key.attr_off = add_string(rule_tmp->rules, attr); break; + case TK_A_DEVLINK: + token->key.value_off = add_string(rule_tmp->rules, value); + token->key.devlink_unique = *(int *)data; + break; case TK_M_TEST: token->key.value_off = add_string(rule_tmp->rules, value); if (data != NULL) token->key.mode = *(mode_t *)data; break; - case TK_A_IGNORE_DEVICE: case TK_A_STRING_ESCAPE_NONE: case TK_A_STRING_ESCAPE_REPLACE: - case TK_A_IGNORE_REMOVE: - case TK_A_LAST_RULE: break; case TK_A_RUN: token->key.value_off = add_string(rule_tmp->rules, value); - token->key.ignore_error = *(int *)data; + token->key.fail_on_error = *(int *)data; break; case TK_A_INOTIFY_WATCH: - case TK_A_NUM_FAKE_PART: case TK_A_DEVLINK_PRIO: token->key.devlink_prio = *(int *)data; break; @@ -1053,6 +1063,9 @@ static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type, case TK_A_MODE_ID: token->key.mode = *(mode_t *)data; break; + case TK_A_STATIC_NODE: + token->key.value_off = add_string(rule_tmp->rules, value); + break; case TK_A_EVENT_TIMEOUT: token->key.event_timeout = *(int *)data; break; @@ -1127,7 +1140,7 @@ static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp) for (i = 0; i < rule_tmp->token_cur; i++) { enum token_type next_val = TK_UNSET; - unsigned int next_idx; + unsigned int next_idx = 0; unsigned int j; /* find smallest value */ @@ -1160,6 +1173,9 @@ static int add_rule(struct udev_rules *rules, char *line, char *linepos; char *attr; struct rule_tmp rule_tmp; + bool bus_warn = false; + bool sysfs_warn = false; + bool id_warn = false; memset(&rule_tmp, 0x00, sizeof(struct rule_tmp)); rule_tmp.rules = rules; @@ -1168,7 +1184,7 @@ static int add_rule(struct udev_rules *rules, char *line, rule_tmp.rule.rule.filename_line = lineno; linepos = line; - while (1) { + for (;;) { char *key; char *value; enum operation_type op; @@ -1244,8 +1260,7 @@ static int add_rule(struct udev_rules *rules, char *line, continue; } - if (strcmp(key, "KERNELS") == 0 || - strcmp(key, "ID") == 0) { + if (strcmp(key, "KERNELS") == 0) { if (op > OP_MATCH_MAX) { err(rules->udev, "invalid KERNELS operation\n"); goto invalid; @@ -1254,8 +1269,37 @@ static int add_rule(struct udev_rules *rules, char *line, continue; } - if (strcmp(key, "SUBSYSTEMS") == 0 || - strcmp(key, "BUS") == 0) { + if (strcmp(key, "ID") == 0) { + if (!id_warn) { + id_warn = true; + err(rules->udev, "ID= will be removed in a future udev version, " + "please use KERNEL= to match the event device, or KERNELS= " + "to match a parent device, in %s:%u\n", filename, lineno); + } + if (op > OP_MATCH_MAX) { + err(rules->udev, "invalid KERNELS operation\n"); + goto invalid; + } + rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL); + continue; + } + + if (strcmp(key, "SUBSYSTEMS") == 0) { + if (op > OP_MATCH_MAX) { + err(rules->udev, "invalid SUBSYSTEMS operation\n"); + goto invalid; + } + rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL); + continue; + } + + if (strcmp(key, "BUS") == 0) { + if (!bus_warn) { + bus_warn = true; + err(rules->udev, "BUS= will be removed in a future udev version, " + "please use SUBSYSTEM= to match the event device, or SUBSYSTEMS= " + "to match a parent device, in %s:%u\n", filename, lineno); + } if (op > OP_MATCH_MAX) { err(rules->udev, "invalid SUBSYSTEMS operation\n"); goto invalid; @@ -1273,8 +1317,7 @@ static int add_rule(struct udev_rules *rules, char *line, continue; } - if (strncmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0 || - strncmp(key, "SYSFS{", sizeof("SYSFS{")-1) == 0) { + if (strncmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0) { if (op > OP_MATCH_MAX) { err(rules->udev, "invalid ATTRS operation\n"); goto invalid; @@ -1294,6 +1337,26 @@ static int add_rule(struct udev_rules *rules, char *line, continue; } + if (strncmp(key, "SYSFS{", sizeof("SYSFS{")-1) == 0) { + if (!sysfs_warn) { + sysfs_warn = true; + err(rules->udev, "SYSFS{}= will be removed in a future udev version, " + "please use ATTR{}= to match the event device, or ATTRS{}= " + "to match a parent device, in %s:%u\n", filename, lineno); + } + if (op > OP_MATCH_MAX) { + err(rules->udev, "invalid ATTRS operation\n"); + goto invalid; + } + attr = get_key_attribute(rules->udev, key + sizeof("ATTRS")-1); + if (attr == NULL) { + err(rules->udev, "error parsing ATTRS attribute\n"); + goto invalid; + } + rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr); + continue; + } + if (strncmp(key, "ENV{", sizeof("ENV{")-1) == 0) { attr = get_key_attribute(rules->udev, key + sizeof("ENV")-1); if (attr == NULL) { @@ -1310,6 +1373,14 @@ static int add_rule(struct udev_rules *rules, char *line, continue; } + if (strcmp(key, "TAG") == 0) { + if (op < OP_MATCH_MAX) + rule_add_key(&rule_tmp, TK_M_TAG, op, value, NULL); + else + rule_add_key(&rule_tmp, TK_A_TAG, op, value, NULL); + continue; + } + if (strcmp(key, "PROGRAM") == 0) { rule_add_key(&rule_tmp, TK_M_PROGRAM, op, value, NULL); continue; @@ -1332,6 +1403,12 @@ static int add_rule(struct udev_rules *rules, char *line, } else if (attr != NULL && strstr(attr, "file")) { dbg(rules->udev, "IMPORT will be included as file\n"); rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL); + } else if (attr != NULL && strstr(attr, "db")) { + dbg(rules->udev, "IMPORT will include db values\n"); + rule_add_key(&rule_tmp, TK_M_IMPORT_DB, op, value, NULL); + } else if (attr != NULL && strstr(attr, "cmdline")) { + dbg(rules->udev, "IMPORT will include db values\n"); + rule_add_key(&rule_tmp, TK_M_IMPORT_CMDLINE, op, value, NULL); } else if (attr != NULL && strstr(attr, "parent")) { dbg(rules->udev, "IMPORT will include the parent values\n"); rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL); @@ -1407,36 +1484,34 @@ static int add_rule(struct udev_rules *rules, char *line, if (op < OP_MATCH_MAX) { rule_add_key(&rule_tmp, TK_M_NAME, op, value, NULL); } else { - if (value[0] == '\0') - info(rules->udev, "name empty, node creation suppressed\n"); - else if (strcmp(value, "%k") == 0) - err(rules->udev, "NAME=\"%%k\" is superfluous and breaks " - "kernel supplied names, please remove it from %s:%u\n", filename, lineno); - rule_add_key(&rule_tmp, TK_A_NAME, op, value, NULL); - attr = get_key_attribute(rules->udev, key + sizeof("NAME")-1); - if (attr != NULL) { - if (strstr(attr, "all_partitions") != NULL) { - int num = DEFAULT_FAKE_PARTITIONS_COUNT; - - dbg(rules->udev, "creation of partition nodes requested\n"); - rule_add_key(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num); - } - if (strstr(attr, "ignore_remove") != NULL) { - dbg(rules->udev, "remove event should be ignored\n"); - rule_add_key(&rule_tmp, TK_A_IGNORE_REMOVE, 0, NULL, NULL); - } + if (strcmp(value, "%k") == 0) { + err(rules->udev, "NAME=\"%%k\" is ignored, because it breaks kernel supplied names, " + "please remove it from %s:%u\n", filename, lineno); + continue; + } + if (value[0] == '\0') { + info(rules->udev, "NAME=\"\" is ignored, because udev will not delete any device nodes, " + "please remove it from %s:%u\n", filename, lineno); + continue; } + rule_add_key(&rule_tmp, TK_A_NAME, op, value, NULL); } - rule_tmp.rule.rule.flags = 1; + rule_tmp.rule.rule.can_set_name = true; continue; } - if (strcmp(key, "SYMLINK") == 0) { - if (op < OP_MATCH_MAX) + if (strncmp(key, "SYMLINK", sizeof("SYMLINK")-1) == 0) { + if (op < OP_MATCH_MAX) { rule_add_key(&rule_tmp, TK_M_DEVLINK, op, value, NULL); - else - rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, NULL); - rule_tmp.rule.rule.flags = 1; + } else { + int flag = 0; + + attr = get_key_attribute(rules->udev, key + sizeof("SYMLINK")-1); + if (attr != NULL && strstr(attr, "unique") != NULL) + flag = 1; + rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, &flag); + } + rule_tmp.rule.rule.can_set_name = true; continue; } @@ -1453,7 +1528,7 @@ static int add_rule(struct udev_rules *rules, char *line, } else if (rules->resolve_names >= 0) { rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL); } - rule_tmp.rule.rule.flags = 1; + rule_tmp.rule.rule.can_set_name = true; continue; } @@ -1470,7 +1545,7 @@ static int add_rule(struct udev_rules *rules, char *line, } else if (rules->resolve_names >= 0) { rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL); } - rule_tmp.rule.rule.flags = 1; + rule_tmp.rule.rule.can_set_name = true; continue; } @@ -1483,68 +1558,55 @@ static int add_rule(struct udev_rules *rules, char *line, rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode); else rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL); - rule_tmp.rule.rule.flags = 1; + rule_tmp.rule.rule.can_set_name = true; continue; } if (strcmp(key, "OPTIONS") == 0) { const char *pos; - if (strstr(value, "last_rule") != NULL) { - dbg(rules->udev, "last rule to be applied\n"); - rule_add_key(&rule_tmp, TK_A_LAST_RULE, 0, NULL, NULL); - } - if (strstr(value, "ignore_device") != NULL) { - dbg(rules->udev, "device should be ignored\n"); - rule_add_key(&rule_tmp, TK_A_IGNORE_DEVICE, 0, NULL, NULL); - } - if (strstr(value, "ignore_remove") != NULL) { - dbg(rules->udev, "remove event should be ignored\n"); - rule_add_key(&rule_tmp, TK_A_IGNORE_REMOVE, 0, NULL, NULL); - } pos = strstr(value, "link_priority="); if (pos != NULL) { int prio = atoi(&pos[strlen("link_priority=")]); - rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, 0, NULL, &prio); + rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, op, NULL, &prio); dbg(rules->udev, "link priority=%i\n", prio); } pos = strstr(value, "event_timeout="); if (pos != NULL) { int tout = atoi(&pos[strlen("event_timeout=")]); - rule_add_key(&rule_tmp, TK_A_EVENT_TIMEOUT, 0, NULL, &tout); + rule_add_key(&rule_tmp, TK_A_EVENT_TIMEOUT, op, NULL, &tout); dbg(rules->udev, "event timeout=%i\n", tout); } pos = strstr(value, "string_escape="); if (pos != NULL) { pos = &pos[strlen("string_escape=")]; if (strncmp(pos, "none", strlen("none")) == 0) - rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, 0, NULL, NULL); + rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, op, NULL, NULL); else if (strncmp(pos, "replace", strlen("replace")) == 0) - rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, 0, NULL, NULL); - } - if (strstr(value, "all_partitions") != NULL) { - int num = DEFAULT_FAKE_PARTITIONS_COUNT; - - rule_add_key(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num); - dbg(rules->udev, "creation of partition nodes requested\n"); + rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, op, NULL, NULL); } pos = strstr(value, "nowatch"); if (pos != NULL) { const int off = 0; - rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, 0, NULL, &off); + rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &off); dbg(rules->udev, "inotify watch of device disabled\n"); } else { pos = strstr(value, "watch"); if (pos != NULL) { const int on = 1; - rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, 0, NULL, &on); + rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &on); dbg(rules->udev, "inotify watch of device requested\n"); } } + pos = strstr(value, "static_node="); + if (pos != NULL) { + rule_add_key(&rule_tmp, TK_A_STATIC_NODE, op, &pos[strlen("static_node=")], NULL); + rule_tmp.rule.rule.has_static_node = true; + } continue; } err(rules->udev, "unknown key '%s' in %s:%u\n", key, filename, lineno); @@ -1581,7 +1643,7 @@ static int parse_file(struct udev_rules *rules, const char *filename, unsigned s first_token = rules->token_cur; - while(fgets(line, sizeof(line), f) != NULL) { + while (fgets(line, sizeof(line), f) != NULL) { char *key; size_t len; @@ -1603,6 +1665,8 @@ static int parse_file(struct udev_rules *rules, const char *filename, unsigned s while (line[len-2] == '\\') { if (fgets(&line[len-2], (sizeof(line)-len)+2, f) == NULL) break; + if (strlen(&line[len-2]) < 2) + break; line_nr++; len = strlen(line); } @@ -1650,7 +1714,7 @@ static int add_matching_files(struct udev *udev, struct udev_list_node *file_lis return -1; } - while (1) { + for (;;) { struct dirent *dent; dent = readdir(dir); @@ -1687,23 +1751,27 @@ struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) struct udev_list_entry *file_loop, *file_tmp; struct token end_token; - rules = malloc(sizeof(struct udev_rules)); + rules = calloc(1, sizeof(struct udev_rules)); if (rules == NULL) return NULL; - memset(rules, 0x00, sizeof(struct udev_rules)); rules->udev = udev; rules->resolve_names = resolve_names; udev_list_init(&file_list); /* init token array and string buffer */ rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token)); - if (rules->tokens == NULL) + if (rules->tokens == NULL) { + free(rules); return NULL; + } rules->token_max = PREALLOC_TOKEN; rules->buf = malloc(PREALLOC_STRBUF); - if (rules->buf == NULL) + if (rules->buf == NULL) { + free(rules->tokens); + free(rules); return NULL; + } rules->buf_max = PREALLOC_STRBUF; /* offset 0 is always '\0' */ rules->buf[0] = '\0'; @@ -1712,8 +1780,12 @@ struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max); rules->trie_nodes = malloc(PREALLOC_TRIE * sizeof(struct trie_node)); - if (rules->trie_nodes == NULL) + if (rules->trie_nodes == NULL) { + free(rules->buf); + free(rules->tokens); + free(rules); return NULL; + } rules->trie_nodes_max = PREALLOC_TRIE; /* offset 0 is the trie root, with an empty string */ memset(rules->trie_nodes, 0x00, sizeof(struct trie_node)); @@ -1731,13 +1803,7 @@ struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) add_matching_files(udev, &file_list, SYSCONFDIR "/udev/rules.d", ".rules"); /* read dynamic/temporary rules */ - util_strscpyl(filename, sizeof(filename), udev_get_dev_path(udev), "/.udev/rules.d", NULL); - if (stat(filename, &statbuf) != 0) { - util_create_path(udev, filename); - udev_selinux_setfscreatecon(udev, filename, S_IFDIR|0755); - mkdir(filename, 0755); - udev_selinux_resetfscreatecon(udev); - } + util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/rules.d", NULL); udev_list_init(&sort_list); add_matching_files(udev, &sort_list, filename, ".rules"); @@ -1790,13 +1856,13 @@ struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) filename_off = add_string(rules, filename); /* the offset in the rule is limited to unsigned short */ if (filename_off < USHRT_MAX) - udev_list_entry_set_flag(file_loop, filename_off); + udev_list_entry_set_flags(file_loop, filename_off); } /* parse list of files */ udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) { const char *filename = udev_list_entry_get_name(file_loop); - unsigned int filename_off = udev_list_entry_get_flag(file_loop); + unsigned int filename_off = udev_list_entry_get_flags(file_loop); if (stat(filename, &statbuf) == 0 && statbuf.st_size > 0) parse_file(rules, filename, filename_off); @@ -1870,7 +1936,7 @@ static int match_key(struct udev_rules *rules, struct token *token, const char * { char *key_value = &rules->buf[token->key.value_off]; char *pos; - int match = 0; + bool match = false; if (val == NULL) val = ""; @@ -1889,7 +1955,7 @@ static int match_key(struct udev_rules *rules, struct token *token, const char * split = &rules->buf[token->key.value_off]; len = strlen(val); - while (1) { + for (;;) { const char *next; next = strchr(split, '|'); @@ -2007,27 +2073,26 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event struct token *cur; struct token *rule; enum escape_type esc = ESCAPE_UNSET; - int can_set_name; + bool can_set_name; if (rules->tokens == NULL) return -1; - can_set_name = ((strcmp(udev_device_get_action(event->dev), "add") == 0 || - strcmp(udev_device_get_action(event->dev), "change") == 0) && + can_set_name = ((strcmp(udev_device_get_action(event->dev), "remove") != 0) && (major(udev_device_get_devnum(event->dev)) > 0 || - strcmp(udev_device_get_subsystem(event->dev), "net") == 0)); + udev_device_get_ifindex(event->dev) > 0)); /* loop through token list, match, run actions or forward to next rule */ cur = &rules->tokens[0]; rule = cur; - while (1) { + for (;;) { dump_token(rules, cur); switch (cur->type) { case TK_RULE: /* current rule */ rule = cur; /* possibly skip rules which want to set NAME, SYMLINK, OWNER, GROUP, MODE */ - if (!can_set_name && rule->rule.flags) + if (!can_set_name && rule->rule.can_set_name) goto nomatch; esc = ESCAPE_UNSET; break; @@ -2047,14 +2112,14 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event { size_t devlen = strlen(udev_get_dev_path(event->udev))+1; struct udev_list_entry *list_entry; - int match = 0; + bool match = false; udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(event->dev)) { const char *devlink; devlink = &udev_list_entry_get_name(list_entry)[devlen]; if (match_key(rules, cur, devlink) == 0) { - match = 1; + match = true; break; } } @@ -2080,6 +2145,21 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event goto nomatch; break; } + case TK_M_TAG: + { + struct udev_list_entry *list_entry; + bool match = false; + + udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(event->dev)) { + if (strcmp(&rules->buf[cur->key.value_off], udev_list_entry_get_name(list_entry)) == 0) { + match = true; + break; + } + } + if (!match && (cur->key.op != OP_NOMATCH)) + goto nomatch; + break; + } case TK_M_SUBSYSTEM: if (match_key(rules, cur, udev_device_get_subsystem(event->dev)) != 0) goto nomatch; @@ -2117,7 +2197,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event /* loop over parents */ event->dev_parent = event->dev; - while (1) { + for (;;) { struct token *key; dbg(event->udev, "parent: '%s'\n", udev_device_get_syspath(event->dev_parent)); @@ -2204,7 +2284,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event program, &rules->buf[rule->rule.filename_off], rule->rule.filename_line); - if (util_run_program(event->udev, program, envp, result, sizeof(result), NULL) != 0) { + if (util_run_program(event->udev, program, envp, result, sizeof(result), NULL, NULL, false) != 0) { if (cur->key.op != OP_NOMATCH) goto nomatch; } else { @@ -2247,6 +2327,66 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event goto nomatch; break; } + case TK_M_IMPORT_DB: + { + const char *key = &rules->buf[cur->key.value_off]; + const char *value; + + value = udev_device_get_property_value(event->dev_db, key); + if (value != NULL) { + struct udev_list_entry *entry; + + entry = udev_device_add_property(event->dev, key, value); + udev_list_entry_set_flags(entry, 1); + } else { + if (cur->key.op != OP_NOMATCH) + goto nomatch; + } + break; + } + case TK_M_IMPORT_CMDLINE: + { + FILE *f; + bool imported = false; + + f = fopen("/proc/cmdline", "r"); + if (f != NULL) { + char cmdline[4096]; + + if (fgets(cmdline, sizeof(cmdline), f) != NULL) { + const char *key = &rules->buf[cur->key.value_off]; + char *pos; + + pos = strstr(cmdline, key); + if (pos != NULL) { + struct udev_list_entry *entry; + + pos += strlen(key); + if (pos[0] == '\0' || isspace(pos[0])) { + /* we import simple flags as 'FLAG=1' */ + entry = udev_device_add_property(event->dev, key, "1"); + udev_list_entry_set_flags(entry, 1); + imported = true; + } else if (pos[0] == '=') { + const char *value; + + pos++; + value = pos; + while (pos[0] != '\0' && !isspace(pos[0])) + pos++; + pos[0] = '\0'; + entry = udev_device_add_property(event->dev, key, value); + udev_list_entry_set_flags(entry, 1); + imported = true; + } + } + } + fclose(f); + } + if (!imported && cur->key.op != OP_NOMATCH) + goto nomatch; + break; + } case TK_M_IMPORT_PARENT: { char import[UTIL_PATH_SIZE]; @@ -2261,25 +2401,17 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event if (match_key(rules, cur, event->program_result) != 0) goto nomatch; break; - - case TK_A_IGNORE_DEVICE: - event->ignore_device = 1; - return 0; - break; case TK_A_STRING_ESCAPE_NONE: esc = ESCAPE_NONE; break; case TK_A_STRING_ESCAPE_REPLACE: esc = ESCAPE_REPLACE; break; - case TK_A_NUM_FAKE_PART: - if (strcmp(udev_device_get_subsystem(event->dev), "block") != 0) - break; - if (udev_device_get_sysnum(event->dev) != NULL) - break; - udev_device_set_num_fake_partitions(event->dev, cur->key.num_fake_part); - break; case TK_A_INOTIFY_WATCH: + if (event->inotify_watch_final) + break; + if (cur->key.op == OP_ASSIGN_FINAL) + event->inotify_watch_final = true; event->inotify_watch = cur->key.watch; break; case TK_A_DEVLINK_PRIO: @@ -2292,7 +2424,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event if (event->owner_final) break; if (cur->key.op == OP_ASSIGN_FINAL) - event->owner_final = 1; + event->owner_final = true; udev_event_apply_format(event, &rules->buf[cur->key.value_off], owner, sizeof(owner)); event->uid = util_lookup_user(event->udev, owner); info(event->udev, "OWNER %u %s:%u\n", @@ -2308,7 +2440,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event if (event->group_final) break; if (cur->key.op == OP_ASSIGN_FINAL) - event->group_final = 1; + event->group_final = true; udev_event_apply_format(event, &rules->buf[cur->key.value_off], group, sizeof(group)); event->gid = util_lookup_group(event->udev, group); info(event->udev, "GROUP %u %s:%u\n", @@ -2325,12 +2457,12 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event if (event->mode_final) break; if (cur->key.op == OP_ASSIGN_FINAL) - event->mode_final = 1; + event->mode_final = true; udev_event_apply_format(event, &rules->buf[cur->key.value_off], mode, sizeof(mode)); event->mode = strtol(mode, &endptr, 8); if (endptr[0] != '\0') { - err(event->udev, "invalide mode '%s' set default mode 0660\n", mode); - event->mode = 0660; + err(event->udev, "invalide mode '%s' set default mode 0600\n", mode); + event->mode = 0600; } info(event->udev, "MODE %#o %s:%u\n", event->mode, @@ -2342,7 +2474,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event if (event->owner_final) break; if (cur->key.op == OP_ASSIGN_FINAL) - event->owner_final = 1; + event->owner_final = true; event->uid = cur->key.uid; info(event->udev, "OWNER %u %s:%u\n", event->uid, @@ -2353,7 +2485,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event if (event->group_final) break; if (cur->key.op == OP_ASSIGN_FINAL) - event->group_final = 1; + event->group_final = true; event->gid = cur->key.gid; info(event->udev, "GROUP %u %s:%u\n", event->gid, @@ -2364,13 +2496,15 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event if (event->mode_final) break; if (cur->key.op == OP_ASSIGN_FINAL) - event->mode_final = 1; + event->mode_final = true; event->mode = cur->key.mode; info(event->udev, "MODE %#o %s:%u\n", event->mode, &rules->buf[rule->rule.filename_off], rule->rule.filename_line); break; + case TK_A_STATIC_NODE: + break; case TK_A_ENV: { const char *name = &rules->buf[cur->key.attr_off]; @@ -2384,12 +2518,17 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event entry = udev_device_add_property(event->dev, name, temp_value); /* store in db, skip private keys */ if (name[0] != '.') - udev_list_entry_set_flag(entry, 1); + udev_list_entry_set_flags(entry, 1); } else { udev_device_add_property(event->dev, name, NULL); } break; } + case TK_A_TAG: + if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) + udev_device_cleanup_tags_list(event->dev); + udev_device_add_tag(event->dev, &rules->buf[cur->key.value_off]); + break; case TK_A_NAME: { const char *name = &rules->buf[cur->key.value_off]; @@ -2399,7 +2538,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event if (event->name_final) break; if (cur->key.op == OP_ASSIGN_FINAL) - event->name_final = 1; + event->name_final = true; udev_event_apply_format(event, name, name_str, sizeof(name_str)); if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) { count = udev_util_replace_chars(name_str, "/"); @@ -2426,7 +2565,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event if (major(udev_device_get_devnum(event->dev)) == 0) break; if (cur->key.op == OP_ASSIGN_FINAL) - event->devlink_final = 1; + event->devlink_final = true; if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) udev_device_cleanup_devlinks_list(event->dev); @@ -2443,35 +2582,28 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event while (isspace(pos[0])) pos++; next = strchr(pos, ' '); - while (next) { + while (next != NULL) { next[0] = '\0'; - info(event->udev, "LINK '%s' %s:%u\n", - pos, - &rules->buf[rule->rule.filename_off], - rule->rule.filename_line); + info(event->udev, "LINK '%s' %s:%u\n", pos, + &rules->buf[rule->rule.filename_off], rule->rule.filename_line); util_strscpyl(filename, sizeof(filename), udev_get_dev_path(event->udev), "/", pos, NULL); - udev_device_add_devlink(event->dev, filename); + udev_device_add_devlink(event->dev, filename, cur->key.devlink_unique); while (isspace(next[1])) next++; pos = &next[1]; next = strchr(pos, ' '); } if (pos[0] != '\0') { - info(event->udev, "LINK '%s' %s:%u\n", - pos, - &rules->buf[rule->rule.filename_off], - rule->rule.filename_line); + info(event->udev, "LINK '%s' %s:%u\n", pos, + &rules->buf[rule->rule.filename_off], rule->rule.filename_line); util_strscpyl(filename, sizeof(filename), udev_get_dev_path(event->udev), "/", pos, NULL); - udev_device_add_devlink(event->dev, filename); + udev_device_add_devlink(event->dev, filename, cur->key.devlink_unique); } } break; case TK_A_EVENT_TIMEOUT: udev_device_set_event_timeout(event->dev, cur->key.event_timeout); break; - case TK_A_IGNORE_REMOVE: - udev_device_set_ignore_remove(event->dev, 1); - break; case TK_A_ATTR: { const char *key_name = &rules->buf[cur->key.attr_off]; @@ -2509,8 +2641,8 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event rule->rule.filename_line); list_entry = udev_list_entry_add(event->udev, &event->run_list, &rules->buf[cur->key.value_off], NULL, 1, 0); - if (cur->key.ignore_error) - udev_list_entry_set_flag(list_entry, 1); + if (cur->key.fail_on_error) + udev_list_entry_set_flags(list_entry, 1); break; } case TK_A_GOTO: @@ -2518,7 +2650,6 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event break; cur = &rules->tokens[cur->key.rule_goto]; continue; - case TK_A_LAST_RULE: case TK_END: return 0; @@ -2539,3 +2670,75 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event (unsigned int) (cur - rules->tokens)); } } + +void udev_rules_apply_static_dev_perms(struct udev_rules *rules) +{ + struct token *cur; + struct token *rule; + uid_t uid = 0; + gid_t gid = 0; + mode_t mode = 0; + + if (rules->tokens == NULL) + return; + + cur = &rules->tokens[0]; + rule = cur; + for (;;) { + switch (cur->type) { + case TK_RULE: + /* current rule */ + rule = cur; + + /* skip rules without a static_node tag */ + if (!rule->rule.has_static_node) + goto next; + + uid = 0; + gid = 0; + mode = 0; + break; + case TK_A_OWNER_ID: + uid = cur->key.uid; + break; + case TK_A_GROUP_ID: + gid = cur->key.gid; + break; + case TK_A_MODE_ID: + mode = cur->key.mode; + break; + case TK_A_STATIC_NODE: { + char filename[UTIL_PATH_SIZE]; + struct stat stats; + /* we assure, that the permissions tokens are sorted before the static token */ + if (mode == 0 && uid == 0 && gid == 0) + goto next; + util_strscpyl(filename, sizeof(filename), udev_get_dev_path(rules->udev), "/", + &rules->buf[cur->key.value_off], NULL); + if (stat(filename, &stats) != 0) + goto next; + if (!S_ISBLK(stats.st_mode) && !S_ISCHR(stats.st_mode)) + goto next; + if (mode != 0 && mode != (stats.st_mode & 0777)) { + chmod(filename, mode); + info(rules->udev, "chmod '%s' %#o\n", filename, mode); + } + if ((uid != 0 && uid != stats.st_uid) || (gid != 0 && gid != stats.st_gid)) { + chown(filename, uid, gid); + info(rules->udev, "chown '%s' %u %u\n", filename, uid, gid); + } + utimensat(AT_FDCWD, filename, NULL, 0); + break; + } + case TK_END: + return; + } + + cur++; + continue; +next: + /* fast-forward to next rule */ + cur = rule + rule->rule.token_count; + continue; + } +}