X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udev%2Fudev-rules.c;h=2ae30d81f6c9567d1cfb8adabcb5994097a25b3c;hp=665ad71e80f3289a1234930e1ab0b06fa4c48503;hb=c7c32e9c9835a0bdaee931f33ac0fc86a1e4c415;hpb=6270756cdca967adce6badaf1360d872a0907bf0 diff --git a/udev/udev-rules.c b/udev/udev-rules.c index 665ad71e8..2ae30d81f 100644 --- a/udev/udev-rules.c +++ b/udev/udev-rules.c @@ -1,5 +1,6 @@ /* - * Copyright (C) 2008 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 * it under the terms of the GNU General Public License as published by @@ -16,7 +17,9 @@ */ #include +#include #include +#include #include #include #include @@ -25,11 +28,62 @@ #include #include #include +#include #include "udev.h" #define PREALLOC_TOKEN 2048 #define PREALLOC_STRBUF 32 * 1024 +#define PREALLOC_TRIE 256 + +struct uid_gid { + unsigned int name_off; + union { + uid_t uid; + gid_t gid; + }; +}; + +struct trie_node { + /* this node's first child */ + unsigned int child_idx; + /* the next child of our parent node's child list */ + unsigned int next_child_idx; + /* this node's last child (shortcut for append) */ + unsigned int last_child_idx; + unsigned int value_off; + unsigned short value_len; + unsigned char key; +}; + +struct udev_rules { + struct udev *udev; + int resolve_names; + + /* every key in the rules file becomes a token */ + struct token *tokens; + unsigned int token_cur; + unsigned int token_max; + + /* all key strings are copied to a single string buffer */ + char *buf; + size_t buf_cur; + size_t buf_max; + unsigned int buf_count; + + /* during rule parsing, strings are indexed to find duplicates */ + struct trie_node *trie_nodes; + unsigned int trie_nodes_cur; + unsigned int trie_nodes_max; + + /* during rule parsing, uid/gid lookup results are cached */ + struct uid_gid *uids; + unsigned int uids_cur; + unsigned int uids_max; + struct uid_gid *gids; + unsigned int gids_cur; + unsigned int gids_max; +}; /* KEY=="", KEY!="", KEY+="", KEY="", KEY:="" */ enum operation_type { @@ -44,17 +98,6 @@ enum operation_type { OP_ASSIGN_FINAL, }; -static const char *operation_str[] = { - [OP_UNSET] = "UNSET", - [OP_MATCH] = "match", - [OP_NOMATCH] = "nomatch", - [OP_MATCH_MAX] = "MATCH_MAX", - - [OP_ADD] = "add", - [OP_ASSIGN] = "assign", - [OP_ASSIGN_FINAL] = "assign-final", -}; - enum string_glob_type { GL_UNSET, GL_PLAIN, /* no special chars */ @@ -62,20 +105,14 @@ enum string_glob_type { GL_SPLIT, /* multi-value A|B */ GL_SPLIT_GLOB, /* multi-value with glob A*|B* */ GL_SOMETHING, /* commonly used "?*" */ - GL_FORMAT, }; -#ifdef DEBUG -static const char *string_glob_str[] = { - [GL_UNSET] = "UNSET", - [GL_PLAIN] = "plain", - [GL_GLOB] = "glob", - [GL_SPLIT] = "split", - [GL_SPLIT_GLOB] = "split-glob", - [GL_SOMETHING] = "split-glob", - [GL_FORMAT] = "format", +enum string_subst_type { + SB_UNSET, + SB_NONE, + SB_FORMAT, + SB_SUBSYS, }; -#endif /* tokens of a rule are sorted/handled in this order */ enum token_type { @@ -88,11 +125,13 @@ 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 */ TK_M_ATTR, /* val, attr */ + TK_M_PARENTS_MIN, TK_M_KERNELS, /* val */ TK_M_SUBSYSTEMS, /* val */ TK_M_DRIVERS, /* val */ @@ -100,17 +139,20 @@ enum token_type { TK_M_PARENTS_MAX, TK_M_TEST, /* val, mode_t */ + TK_M_EVENT_TIMEOUT, /* int */ 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_NUM_FAKE_PART, /* int */ + TK_A_DB_PERSIST, + TK_A_INOTIFY_WATCH, /* int */ TK_A_DEVLINK_PRIO, /* int */ TK_A_OWNER, /* val */ TK_A_GROUP, /* val */ @@ -118,95 +160,50 @@ 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, }; -static const char *token_str[] = { - [TK_UNSET] = "UNSET", - [TK_RULE] = "RULE", - - [TK_M_ACTION] = "M ACTION", - [TK_M_DEVPATH] = "M DEVPATH", - [TK_M_KERNEL] = "M KERNEL", - [TK_M_DEVLINK] = "M DEVLINK", - [TK_M_NAME] = "M NAME", - [TK_M_ENV] = "M ENV", - [TK_M_SUBSYSTEM] = "M SUBSYSTEM", - [TK_M_DRIVER] = "M DRIVER", - [TK_M_WAITFOR] = "M WAITFOR", - [TK_M_ATTR] = "M ATTR", - - [TK_M_KERNELS] = "M KERNELS", - [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS", - [TK_M_DRIVERS] = "M DRIVERS", - [TK_M_ATTRS] = "M ATTRS", - [TK_M_PARENTS_MAX] = "M PARENTS_MAX", - - [TK_M_TEST] = "M TEST", - [TK_M_PROGRAM] = "M PROGRAM", - [TK_M_IMPORT_FILE] = "M IMPORT_FILE", - [TK_M_IMPORT_PROG] = "M IMPORT_PROG", - [TK_M_IMPORT_PARENT] = "M MPORT_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_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_MODE_ID] = "A MODE_ID", - [TK_A_ENV] = "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", -}; - +/* we try to pack stuff in a way that we take only 12 bytes per token */ struct token { - enum token_type type; union { + unsigned char type; /* same in rule and key */ struct { - unsigned int next_rule; + enum token_type type:8; + bool can_set_name:1; + bool has_static_node:1; + unsigned int unused:6; + unsigned short token_count; unsigned int label_off; - unsigned int filename_off; + unsigned short filename_off; + unsigned short filename_line; } rule; struct { - unsigned short op; - unsigned short glob; + enum token_type type:8; + enum operation_type op:8; + enum string_glob_type glob:8; + enum string_subst_type subst:4; + enum string_subst_type attrsubst:4; unsigned int value_off; union { unsigned int attr_off; - int ignore_error; - int i; + 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; }; } key; }; @@ -220,75 +217,340 @@ struct rule_tmp { unsigned int token_cur; }; -struct uid_gid { - unsigned int name_off; - union { - uid_t uid; - gid_t gid; +#ifdef ENABLE_DEBUG +static const char *operation_str(enum operation_type type) +{ + static const char *operation_strs[] = { + [OP_UNSET] = "UNSET", + [OP_MATCH] = "match", + [OP_NOMATCH] = "nomatch", + [OP_MATCH_MAX] = "MATCH_MAX", + + [OP_ADD] = "add", + [OP_ASSIGN] = "assign", + [OP_ASSIGN_FINAL] = "assign-final", +} ; + + return operation_strs[type]; +} + +static const char *string_glob_str(enum string_glob_type type) +{ + static const char *string_glob_strs[] = { + [GL_UNSET] = "UNSET", + [GL_PLAIN] = "plain", + [GL_GLOB] = "glob", + [GL_SPLIT] = "split", + [GL_SPLIT_GLOB] = "split-glob", + [GL_SOMETHING] = "split-glob", }; -}; -struct udev_rules { - struct udev *udev; - int resolve_names; + return string_glob_strs[type]; +} - /* every key in the rules file becomes a token */ - struct token *tokens; - unsigned int token_cur; - unsigned int token_max; +static const char *token_str(enum token_type type) +{ + static const char *token_strs[] = { + [TK_UNSET] = "UNSET", + [TK_RULE] = "RULE", + + [TK_M_ACTION] = "M ACTION", + [TK_M_DEVPATH] = "M DEVPATH", + [TK_M_KERNEL] = "M KERNEL", + [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", + [TK_M_ATTR] = "M ATTR", + + [TK_M_PARENTS_MIN] = "M PARENTS_MIN", + [TK_M_KERNELS] = "M KERNELS", + [TK_M_SUBSYSTEMS] = "M SUBSYSTEMS", + [TK_M_DRIVERS] = "M DRIVERS", + [TK_M_ATTRS] = "M ATTRS", + [TK_M_PARENTS_MAX] = "M PARENTS_MAX", + + [TK_M_TEST] = "M TEST", + [TK_M_EVENT_TIMEOUT] = "M EVENT_TIMEOUT", + [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_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE", + [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE", + [TK_A_DB_PERSIST] = "A DB_PERSIST", + [TK_A_INOTIFY_WATCH] = "A INOTIFY_WATCH", + [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_ATTR] = "A ATTR", + [TK_A_RUN] = "A RUN", + [TK_A_GOTO] = "A GOTO", + + [TK_END] = "END", + }; - /* all key strings are copied to a single string buffer */ - char *buf; - size_t buf_cur; - size_t buf_max; - unsigned int buf_count; + return token_strs[type]; +} - /* during rule parsing, we cache uid/gid lookup results */ - struct uid_gid *uids; - unsigned int uids_cur; - unsigned int uids_max; - struct uid_gid *gids; - unsigned int gids_cur; - unsigned int gids_max; -}; +static void dump_token(struct udev_rules *rules, struct token *token) +{ + enum token_type type = token->type; + enum operation_type op = token->key.op; + enum string_glob_type glob = token->key.glob; + const char *value = &rules->buf[token->key.value_off]; + const char *attr = &rules->buf[token->key.attr_off]; -/* NOTE: we could lookup and return existing strings, or tails of strings */ -static int add_string(struct udev_rules *rules, const char *str) + switch (type) { + case TK_RULE: + { + const char *tks_ptr = (char *)rules->tokens; + 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'\n", + &rules->buf[token->rule.filename_off], token->rule.filename_line, + idx, token->rule.token_count, + &rules->buf[token->rule.label_off]); + break; + } + case TK_M_ACTION: + case TK_M_DEVPATH: + case TK_M_KERNEL: + case TK_M_SUBSYSTEM: + case TK_M_DRIVER: + case TK_M_WAITFOR: + case TK_M_DEVLINK: + case TK_M_NAME: + case TK_M_KERNELS: + case TK_M_SUBSYSTEMS: + case TK_M_DRIVERS: + 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: + case TK_A_DEVLINK: + case TK_A_OWNER: + case TK_A_GROUP: + case TK_A_MODE: + case TK_A_RUN: + dbg(rules->udev, "%s %s '%s'(%s)\n", + token_str(type), operation_str(op), value, string_glob_str(glob)); + break; + case TK_M_ATTR: + case TK_M_ATTRS: + case TK_M_ENV: + case TK_A_ATTR: + case TK_A_ENV: + dbg(rules->udev, "%s %s '%s' '%s'(%s)\n", + token_str(type), operation_str(op), attr, value, string_glob_str(glob)); + break; + 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_DB_PERSIST: + dbg(rules->udev, "%s\n", token_str(type)); + break; + case TK_M_TEST: + dbg(rules->udev, "%s %s '%s'(%s) %#o\n", + token_str(type), operation_str(op), value, string_glob_str(glob), token->key.mode); + break; + case TK_A_INOTIFY_WATCH: + dbg(rules->udev, "%s %u\n", token_str(type), token->key.watch); + break; + case TK_A_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); + break; + case TK_A_GROUP_ID: + dbg(rules->udev, "%s %s %u\n", token_str(type), operation_str(op), token->key.gid); + break; + 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_M_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); + break; + case TK_END: + dbg(rules->udev, "* %s\n", token_str(type)); + break; + case TK_M_PARENTS_MIN: + case TK_M_PARENTS_MAX: + case TK_M_MAX: + case TK_UNSET: + dbg(rules->udev, "unknown type %u\n", type); + break; + } +} + +static void dump_rules(struct udev_rules *rules) { - size_t len = strlen(str)+1; - int off; + unsigned int i; - /* offset 0 is always '\0' */ - if (str[0] == '\0') - return 0; + dbg(rules->udev, "dumping %u (%zu bytes) tokens, %u (%zu bytes) strings\n", + rules->token_cur, + rules->token_cur * sizeof(struct token), + rules->buf_count, + rules->buf_cur); + for(i = 0; i < rules->token_cur; i++) + dump_token(rules, &rules->tokens[i]); +} +#else +static inline const char *operation_str(enum operation_type type) { return NULL; } +static inline const char *token_str(enum token_type type) { return NULL; } +static inline void dump_token(struct udev_rules *rules, struct token *token) {} +static inline void dump_rules(struct udev_rules *rules) {} +#endif /* ENABLE_DEBUG */ + +static int add_new_string(struct udev_rules *rules, const char *str, size_t bytes) +{ + int off; /* grow buffer if needed */ - if (rules->buf_cur + len+1 >= rules->buf_max) { + if (rules->buf_cur + bytes+1 >= rules->buf_max) { char *buf; unsigned int add; /* double the buffer size */ add = rules->buf_max; - if (add < len * 8) - add = len * 8; + if (add < bytes * 8) + add = bytes * 8; buf = realloc(rules->buf, rules->buf_max + add); if (buf == NULL) return -1; - info(rules->udev, "extend buffer from %zu to %zu\n", rules->buf_max, rules->buf_max + add); + dbg(rules->udev, "extend buffer from %zu to %zu\n", rules->buf_max, rules->buf_max + add); rules->buf = buf; rules->buf_max += add; } off = rules->buf_cur; - memcpy(&rules->buf[rules->buf_cur], str, len); - rules->buf_cur += len; + memcpy(&rules->buf[rules->buf_cur], str, bytes); + rules->buf_cur += bytes; rules->buf_count++; return off; } -static int add_token(struct udev_rules *rules, struct token *token) +static int add_string(struct udev_rules *rules, const char *str) { + unsigned int node_idx; + struct trie_node *new_node; + unsigned int new_node_idx; + unsigned char key; + unsigned short len; + unsigned int depth; + unsigned int off; + struct trie_node *parent; + + /* walk trie, start from last character of str to find matching tails */ + len = strlen(str); + key = str[len-1]; + node_idx = 0; + for (depth = 0; depth <= len; depth++) { + struct trie_node *node; + unsigned int child_idx; + + node = &rules->trie_nodes[node_idx]; + off = node->value_off + node->value_len - len; + + /* match against current node */ + if (depth == len || (node->value_len >= len && memcmp(&rules->buf[off], str, len) == 0)) + return off; + + /* lookup child node */ + key = str[len - 1 - depth]; + child_idx = node->child_idx; + while (child_idx > 0) { + struct trie_node *child; + + child = &rules->trie_nodes[child_idx]; + if (child->key == key) + break; + child_idx = child->next_child_idx; + } + if (child_idx == 0) + break; + node_idx = child_idx; + } + + /* string not found, add it */ + off = add_new_string(rules, str, len + 1); + + /* grow trie nodes if needed */ + if (rules->trie_nodes_cur >= rules->trie_nodes_max) { + struct trie_node *nodes; + unsigned int add; + + /* double the buffer size */ + add = rules->trie_nodes_max; + if (add < 8) + add = 8; + + nodes = realloc(rules->trie_nodes, (rules->trie_nodes_max + add) * sizeof(struct trie_node)); + if (nodes == NULL) + return -1; + dbg(rules->udev, "extend trie nodes from %u to %u\n", + rules->trie_nodes_max, rules->trie_nodes_max + add); + rules->trie_nodes = nodes; + rules->trie_nodes_max += add; + } + + /* get a new node */ + new_node_idx = rules->trie_nodes_cur; + rules->trie_nodes_cur++; + new_node = &rules->trie_nodes[new_node_idx]; + memset(new_node, 0x00, sizeof(struct trie_node)); + new_node->value_off = off; + new_node->value_len = len; + new_node->key = key; + + /* join the parent's child list */ + parent = &rules->trie_nodes[node_idx]; + if (parent->child_idx == 0) { + parent->child_idx = new_node_idx; + } else { + struct trie_node *last_child; + last_child = &rules->trie_nodes[parent->last_child_idx]; + last_child->next_child_idx = new_node_idx; + } + parent->last_child_idx = new_node_idx; + return off; +} + +static int add_token(struct udev_rules *rules, struct token *token) +{ /* grow buffer if needed */ if (rules->token_cur+1 >= rules->token_max) { struct token *tokens; @@ -302,7 +564,7 @@ static int add_token(struct udev_rules *rules, struct token *token) tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token)); if (tokens == NULL) return -1; - info(rules->udev, "extend tokens from %u to %u\n", rules->token_max, rules->token_max + add); + dbg(rules->udev, "extend tokens from %u to %u\n", rules->token_max, rules->token_max + add); rules->tokens = tokens; rules->token_max += add; } @@ -341,7 +603,7 @@ static uid_t add_uid(struct udev_rules *rules, const char *owner) uids = realloc(rules->uids, (rules->uids_max + add ) * sizeof(struct uid_gid)); if (uids == NULL) return uid; - info(rules->udev, "extend uids from %u to %u\n", rules->uids_max, rules->uids_max + add); + dbg(rules->udev, "extend uids from %u to %u\n", rules->uids_max, rules->uids_max + add); rules->uids = uids; rules->uids_max += add; } @@ -384,7 +646,7 @@ static gid_t add_gid(struct udev_rules *rules, const char *group) gids = realloc(rules->gids, (rules->gids_max + add ) * sizeof(struct uid_gid)); if (gids == NULL) return gid; - info(rules->udev, "extend gids from %u to %u\n", rules->gids_max, rules->gids_max + add); + dbg(rules->udev, "extend gids from %u to %u\n", rules->gids_max, rules->gids_max + add); rules->gids = gids; rules->gids_max += add; } @@ -453,7 +715,7 @@ static int import_property_from_string(struct udev_device *dev, char *line) val++; } - info(udev, "adding '%s'='%s'\n", key, val); + dbg(udev, "adding '%s'='%s'\n", key, val); /* handle device, renamed by external tool, returning new path */ if (strcmp(key, "DEVPATH") == 0) { @@ -461,15 +723,15 @@ static int import_property_from_string(struct udev_device *dev, char *line) info(udev, "updating devpath from '%s' to '%s'\n", udev_device_get_devpath(dev), val); - util_strlcpy(syspath, udev_get_sys_path(udev), sizeof(syspath)); - util_strlcat(syspath, val, sizeof(syspath)); + util_strscpyl(syspath, sizeof(syspath), udev_get_sys_path(udev), val, NULL); udev_device_set_syspath(dev, syspath); } else { struct udev_list_entry *entry; entry = udev_device_add_property(dev, key, val); - /* store in db */ - udev_list_entry_set_flag(entry, 1); + /* store in db, skip private keys */ + if (key[0] != '.') + udev_list_entry_set_flags(entry, 1); } return 0; } @@ -488,17 +750,18 @@ static int import_file_into_properties(struct udev_device *dev, const char *file return 0; } -static int import_program_into_properties(struct udev_device *dev, const char *program) +static int import_program_into_properties(struct udev_event *event, const char *program, const sigset_t *sigmask) { - struct udev *udev = udev_device_get_udev(dev); + struct udev_device *dev = event->dev; char **envp; - char result[2048]; - size_t reslen; + char result[UTIL_LINE_SIZE]; char *line; + int err; envp = udev_device_get_properties_envp(dev); - if (util_run_program(udev, program, envp, result, sizeof(result), &reslen) != 0) - return -1; + err = udev_event_spawn(event, program, envp, sigmask, result, sizeof(result)); + if (err < 0) + return err; line = result; while (line != NULL) { @@ -535,8 +798,9 @@ static int import_parent_into_properties(struct udev_device *dev, const char *fi dbg(udev, "import key '%s=%s'\n", key, val); entry = udev_device_add_property(dev, key, val); - /* store in db */ - udev_list_entry_set_flag(entry, 1); + /* store in db, skip private keys */ + if (key[0] != '.') + udev_list_entry_set_flags(entry, 1); } } return 0; @@ -554,17 +818,16 @@ static int wait_for_file(struct udev_device *dev, const char *file, int timeout) /* a relative path is a device attribute */ devicepath[0] = '\0'; if (file[0] != '/') { - util_strlcpy(devicepath, udev_get_sys_path(udev), sizeof(devicepath)); - util_strlcat(devicepath, udev_device_get_devpath(dev), sizeof(devicepath)); - - util_strlcpy(filepath, devicepath, sizeof(filepath)); - util_strlcat(filepath, "/", sizeof(filepath)); - util_strlcat(filepath, file, sizeof(filepath)); + util_strscpyl(devicepath, sizeof(devicepath), + udev_get_sys_path(udev), udev_device_get_devpath(dev), NULL); + util_strscpyl(filepath, sizeof(filepath), devicepath, "/", file, NULL); file = filepath; } dbg(udev, "will wait %i sec for '%s'\n", timeout, file); while (--loop) { + const struct timespec duration = { 0, 1000 * 1000 * 1000 / WAIT_LOOP_PER_SECOND }; + /* lookup file */ if (stat(file, &stats) == 0) { info(udev, "file '%s' appeared after %i loops\n", file, (timeout * WAIT_LOOP_PER_SECOND) - loop-1); @@ -576,7 +839,7 @@ static int wait_for_file(struct udev_device *dev, const char *file, int timeout) return -2; } info(udev, "wait for '%s' for %i mseconds\n", file, 1000 / WAIT_LOOP_PER_SECOND); - usleep(1000 * 1000 / WAIT_LOOP_PER_SECOND); + nanosleep(&duration, NULL); } info(udev, "waiting for '%s' failed\n", file); return -1; @@ -584,17 +847,21 @@ static int wait_for_file(struct udev_device *dev, const char *file, int timeout) static int attr_subst_subdir(char *attr, size_t len) { - char *pos; - int found = 0; + bool found = false; - pos = strstr(attr, "/*/"); - if (pos != NULL) { - char str[UTIL_PATH_SIZE]; + if (strstr(attr, "/*/")) { + char *pos; + char dirname[UTIL_PATH_SIZE]; + const char *tail; DIR *dir; - pos[1] = '\0'; - util_strlcpy(str, &pos[2], sizeof(str)); - dir = opendir(attr); + util_strscpy(dirname, sizeof(dirname), attr); + pos = strstr(dirname, "/*/"); + if (pos == NULL) + return -1; + pos[0] = '\0'; + tail = &pos[2]; + dir = opendir(dirname); if (dir != NULL) { struct dirent *dent; @@ -603,18 +870,14 @@ static int attr_subst_subdir(char *attr, size_t len) if (dent->d_name[0] == '.') continue; - util_strlcat(attr, dent->d_name, len); - util_strlcat(attr, str, len); + util_strscpyl(attr, len, dirname, "/", dent->d_name, tail, NULL); if (stat(attr, &stats) == 0) { - found = 1; + found = true; break; } - pos[1] = '\0'; } closedir(dir); } - if (!found) - util_strlcat(attr, str, len); } return found; @@ -626,7 +889,7 @@ static int get_key(struct udev *udev, char **line, char **key, enum operation_ty char *temp; linepos = *line; - if (linepos == NULL && linepos[0] == '\0') + if (linepos == NULL || linepos[0] == '\0') return -1; /* skip whitespace */ @@ -638,7 +901,7 @@ 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; @@ -701,7 +964,7 @@ static int get_key(struct udev *udev, char **line, char **key, enum operation_ty return -1; temp[0] = '\0'; temp++; - dbg(udev, "%s '%s'-'%s'\n", operation_str[*op], *key, *value); + dbg(udev, "%s '%s'-'%s'\n", operation_str(*op), *key, *value); /* move line to next key */ *line = temp; @@ -729,13 +992,12 @@ static char *get_key_attribute(struct udev *udev, char *str) return NULL; } -static int rule_add_token(struct rule_tmp *rule_tmp, enum token_type type, - enum operation_type op, - const char *value, const void *data) +static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type, + enum operation_type op, + const char *value, const void *data) { struct token *token = &rule_tmp->token[rule_tmp->token_cur]; - const char *attr = data; - enum string_glob_type glob; + const char *attr = NULL; memset(token, 0x00, sizeof(struct token)); @@ -754,14 +1016,17 @@ static int rule_add_token(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: @@ -769,27 +1034,28 @@ static int rule_add_token(struct rule_tmp *rule_tmp, enum token_type type, case TK_M_ATTRS: case TK_A_ATTR: case TK_A_ENV: + attr = data; 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: + case TK_A_DB_PERSIST: break; case TK_A_RUN: token->key.value_off = add_string(rule_tmp->rules, value); - token->key.ignore_error = *(int *)data; - break; - case TK_A_NUM_FAKE_PART: - token->key.num_fake_part = *(int *)data; + token->key.fail_on_error = *(int *)data; break; + case TK_A_INOTIFY_WATCH: case TK_A_DEVLINK_PRIO: token->key.devlink_prio = *(int *)data; break; @@ -802,171 +1068,74 @@ static int rule_add_token(struct rule_tmp *rule_tmp, enum token_type type, case TK_A_MODE_ID: token->key.mode = *(mode_t *)data; break; - case TK_A_EVENT_TIMEOUT: - token->key.event_timeout = *(int *)data; - break; - case TK_RULE: - case TK_M_PARENTS_MAX: - case TK_M_MAX: - case TK_END: - case TK_UNSET: - err(rule_tmp->rules->udev, "wrong type %u\n", type); - return -1; - } - - glob = GL_PLAIN; - if (value != NULL) { - if (type < TK_M_MAX) { - /* check if we need to split or call fnmatch() while matching rules */ - int has_split; - int has_glob; - - has_split = (strchr(value, '|') != NULL); - has_glob = (strchr(value, '*') != NULL || strchr(value, '?') != NULL || - strchr(value, '[') != NULL || strchr(value, ']') != NULL); - if (has_split && has_glob) { - glob = GL_SPLIT_GLOB; - } else if (has_split) { - glob = GL_SPLIT; - } else if (has_glob) { - if (strcmp(value, "?*") == 0) - glob = GL_SOMETHING; - else - glob = GL_GLOB; - } - } else { - /* check if we need to substitute format strings for matching rules */ - if (strchr(value, '%') != NULL || strchr(value, '$') != NULL) - glob = GL_FORMAT; - } - } - - token->type = type; - token->key.op = op; - token->key.glob = glob; - rule_tmp->token_cur++; - if (rule_tmp->token_cur >= ARRAY_SIZE(rule_tmp->token)) { - err(rule_tmp->rules->udev, "temporary rule array too small\n"); - return -1; - } - return 0; -} - -#ifdef DEBUG -static void dump_token(struct udev_rules *rules, struct token *token) -{ - enum token_type type = token->type; - enum operation_type op = token->key.op; - enum string_glob_type glob = token->key.glob; - const char *value = &rules->buf[token->key.value_off]; - const char *attr = &rules->buf[token->key.attr_off]; - - switch (type) { - case TK_RULE: - { - const char *tks_ptr = (char *)rules->tokens; - const char *tk_ptr = (char *)token; - unsigned int off = tk_ptr - tks_ptr; - - dbg(rules->udev, "* RULE '%s', off: %u(%u), next: %u, label: '%s'\n", - &rules->buf[token->rule.filename_off], - off / (unsigned int) sizeof(struct token), off, - token->rule.next_rule, - &rules->buf[token->rule.label_off]); - break; - } - case TK_M_ACTION: - case TK_M_DEVPATH: - case TK_M_KERNEL: - case TK_M_SUBSYSTEM: - case TK_M_DRIVER: - case TK_M_WAITFOR: - case TK_M_DEVLINK: - case TK_M_NAME: - case TK_M_KERNELS: - case TK_M_SUBSYSTEMS: - case TK_M_DRIVERS: - case TK_M_PROGRAM: - case TK_M_IMPORT_FILE: - case TK_M_IMPORT_PROG: - case TK_M_IMPORT_PARENT: - case TK_M_RESULT: - case TK_A_NAME: - case TK_A_DEVLINK: - case TK_A_OWNER: - case TK_A_GROUP: - case TK_A_MODE: - case TK_A_RUN: - dbg(rules->udev, "%s %s '%s'(%s)\n", - token_str[type], operation_str[op], value, string_glob_str[glob]); - break; - case TK_M_ATTR: - case TK_M_ATTRS: - case TK_M_ENV: - case TK_A_ATTR: - case TK_A_ENV: - 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_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: - dbg(rules->udev, "%s %s '%s'(%s) %#o\n", - token_str[type], operation_str[op], value, string_glob_str[glob], token->key.mode); - 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); - break; - case TK_A_OWNER_ID: - dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.uid); - break; - case TK_A_GROUP_ID: - dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.gid); - break; - 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_EVENT_TIMEOUT: - dbg(rules->udev, "%s %s %u\n", token_str[type], operation_str[op], token->key.event_timeout); - break; - case TK_A_GOTO: - dbg(rules->udev, "%s '%s' %u\n", token_str[type], value, token->key.rule_goto); + case TK_A_STATIC_NODE: + token->key.value_off = add_string(rule_tmp->rules, value); break; - case TK_END: - dbg(rules->udev, "* %s\n", token_str[type]); + case TK_M_EVENT_TIMEOUT: + token->key.event_timeout = *(int *)data; break; + case TK_RULE: + case TK_M_PARENTS_MIN: case TK_M_PARENTS_MAX: case TK_M_MAX: + case TK_END: case TK_UNSET: - dbg(rules->udev, "unknown type %u\n", type); - break; + err(rule_tmp->rules->udev, "wrong type %u\n", type); + return -1; } -} -static void dump_rules(struct udev_rules *rules) -{ - unsigned int i; + if (value != NULL && type < TK_M_MAX) { + /* check if we need to split or call fnmatch() while matching rules */ + enum string_glob_type glob; + int has_split; + int has_glob; + + has_split = (strchr(value, '|') != NULL); + has_glob = (strchr(value, '*') != NULL || strchr(value, '?') != NULL || strchr(value, '[') != NULL); + if (has_split && has_glob) { + glob = GL_SPLIT_GLOB; + } else if (has_split) { + glob = GL_SPLIT; + } else if (has_glob) { + if (strcmp(value, "?*") == 0) + glob = GL_SOMETHING; + else + glob = GL_GLOB; + } else { + glob = GL_PLAIN; + } + token->key.glob = glob; + } - dbg(rules->udev, "dumping %u (%zu bytes) tokens, %u (%zu bytes) strings\n", - rules->token_cur, - rules->token_cur * sizeof(struct token), - rules->buf_count, - rules->buf_cur); - for(i = 0; i < rules->token_cur; i++) - dump_token(rules, &rules->tokens[i]); + if (value != NULL && type > TK_M_MAX) { + /* check if assigned value has substitution chars */ + if (value[0] == '[') + token->key.subst = SB_SUBSYS; + else if (strchr(value, '%') != NULL || strchr(value, '$') != NULL) + token->key.subst = SB_FORMAT; + else + token->key.subst = SB_NONE; + } + + if (attr != NULL) { + /* check if property/attribut name has substitution chars */ + if (attr[0] == '[') + token->key.attrsubst = SB_SUBSYS; + else if (strchr(attr, '%') != NULL || strchr(attr, '$') != NULL) + token->key.attrsubst = SB_FORMAT; + else + token->key.attrsubst = SB_NONE; + } + + token->key.type = type; + token->key.op = op; + rule_tmp->token_cur++; + if (rule_tmp->token_cur >= ARRAY_SIZE(rule_tmp->token)) { + err(rule_tmp->rules->udev, "temporary rule array too small\n"); + return -1; + } + return 0; } -#else -static inline void dump_token(struct udev_rules *rules, struct token *token) {} -static inline void dump_rules(struct udev_rules *rules) {} -#endif /* DEBUG */ static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp) { @@ -976,7 +1145,7 @@ 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 */ @@ -1006,19 +1175,21 @@ static int sort_token(struct udev_rules *rules, struct rule_tmp *rule_tmp) static int add_rule(struct udev_rules *rules, char *line, const char *filename, unsigned int filename_off, unsigned int lineno) { - int valid = 0; char *linepos; char *attr; - int physdev = 0; 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; rule_tmp.rule.type = TK_RULE; rule_tmp.rule.rule.filename_off = filename_off; + rule_tmp.rule.rule.filename_line = lineno; linepos = line; - while (1) { + for (;;) { char *key; char *value; enum operation_type op; @@ -1026,37 +1197,34 @@ static int add_rule(struct udev_rules *rules, char *line, if (get_key(rules->udev, &linepos, &key, &op, &value) != 0) break; - if (strcasecmp(key, "ACTION") == 0) { + if (strcmp(key, "ACTION") == 0) { if (op > OP_MATCH_MAX) { err(rules->udev, "invalid ACTION operation\n"); goto invalid; } - rule_add_token(&rule_tmp, TK_M_ACTION, op, value, NULL); - valid = 1; + rule_add_key(&rule_tmp, TK_M_ACTION, op, value, NULL); continue; } - if (strcasecmp(key, "DEVPATH") == 0) { + if (strcmp(key, "DEVPATH") == 0) { if (op > OP_MATCH_MAX) { err(rules->udev, "invalid DEVPATH operation\n"); goto invalid; } - rule_add_token(&rule_tmp, TK_M_DEVPATH, op, value, NULL); - valid = 1; + rule_add_key(&rule_tmp, TK_M_DEVPATH, op, value, NULL); continue; } - if (strcasecmp(key, "KERNEL") == 0) { + if (strcmp(key, "KERNEL") == 0) { if (op > OP_MATCH_MAX) { err(rules->udev, "invalid KERNEL operation\n"); goto invalid; } - rule_add_token(&rule_tmp, TK_M_KERNEL, op, value, NULL); - valid = 1; + rule_add_key(&rule_tmp, TK_M_KERNEL, op, value, NULL); continue; } - if (strcasecmp(key, "SUBSYSTEM") == 0) { + if (strcmp(key, "SUBSYSTEM") == 0) { if (op > OP_MATCH_MAX) { err(rules->udev, "invalid SUBSYSTEM operation\n"); goto invalid; @@ -1068,72 +1236,93 @@ static int add_rule(struct udev_rules *rules, char *line, if (strcmp(value, "bus") == 0 || strcmp(value, "class") == 0) err(rules->udev, "'%s' must be specified as 'subsystem' \n" "please fix it in %s:%u", value, filename, lineno); - rule_add_token(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL); + rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL); } else - rule_add_token(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL); - valid = 1; + rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL); continue; } - if (strcasecmp(key, "DRIVER") == 0) { + if (strcmp(key, "DRIVER") == 0) { if (op > OP_MATCH_MAX) { err(rules->udev, "invalid DRIVER operation\n"); goto invalid; } - rule_add_token(&rule_tmp, TK_M_DRIVER, op, value, NULL); - valid = 1; + rule_add_key(&rule_tmp, TK_M_DRIVER, op, value, NULL); continue; } - if (strncasecmp(key, "ATTR{", sizeof("ATTR{")-1) == 0) { + if (strncmp(key, "ATTR{", sizeof("ATTR{")-1) == 0) { attr = get_key_attribute(rules->udev, key + sizeof("ATTR")-1); if (attr == NULL) { err(rules->udev, "error parsing ATTR attribute\n"); goto invalid; } if (op < OP_MATCH_MAX) { - rule_add_token(&rule_tmp, TK_M_ATTR, op, value, attr); + rule_add_key(&rule_tmp, TK_M_ATTR, op, value, attr); } else { - rule_add_token(&rule_tmp, TK_A_ATTR, op, value, attr); + rule_add_key(&rule_tmp, TK_A_ATTR, op, value, attr); + } + continue; + } + + if (strcmp(key, "KERNELS") == 0) { + if (op > OP_MATCH_MAX) { + err(rules->udev, "invalid KERNELS operation\n"); + goto invalid; } - valid = 1; + rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL); continue; } - if (strcasecmp(key, "KERNELS") == 0 || - strcasecmp(key, "ID") == 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_token(&rule_tmp, TK_M_KERNELS, op, value, NULL); - valid = 1; + 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 (strcasecmp(key, "SUBSYSTEMS") == 0 || - strcasecmp(key, "BUS") == 0) { + 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; } - rule_add_token(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL); - valid = 1; + rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL); continue; } - if (strcasecmp(key, "DRIVERS") == 0) { + if (strcmp(key, "DRIVERS") == 0) { if (op > OP_MATCH_MAX) { err(rules->udev, "invalid DRIVERS operation\n"); goto invalid; } - rule_add_token(&rule_tmp, TK_M_DRIVERS, op, value, NULL); - valid = 1; + rule_add_key(&rule_tmp, TK_M_DRIVERS, op, value, NULL); continue; } - if (strncasecmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0 || - strncasecmp(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; @@ -1149,95 +1338,112 @@ static int add_rule(struct udev_rules *rules, char *line, else if (strstr(attr, "../") != NULL) err(rules->udev, "do not reference parent sysfs directories directly, " "it may break with a future kernel, please fix it in %s:%u", filename, lineno); - rule_add_token(&rule_tmp, TK_M_ATTRS, op, value, attr); - valid = 1; + rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr); + 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 (strncasecmp(key, "ENV{", sizeof("ENV{")-1) == 0) { + if (strncmp(key, "ENV{", sizeof("ENV{")-1) == 0) { attr = get_key_attribute(rules->udev, key + sizeof("ENV")-1); if (attr == NULL) { err(rules->udev, "error parsing ENV attribute\n"); goto invalid; } - if (strncmp(attr, "PHYSDEV", 7) == 0) - physdev = 1; if (op < OP_MATCH_MAX) { - if (rule_add_token(&rule_tmp, TK_M_ENV, op, value, attr) != 0) + if (rule_add_key(&rule_tmp, TK_M_ENV, op, value, attr) != 0) goto invalid; } else { - if (rule_add_token(&rule_tmp, TK_A_ENV, op, value, attr) != 0) + if (rule_add_key(&rule_tmp, TK_A_ENV, op, value, attr) != 0) goto invalid; } - valid = 1; continue; } - if (strcasecmp(key, "PROGRAM") == 0) { - rule_add_token(&rule_tmp, TK_M_PROGRAM, op, value, NULL); - valid = 1; + 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; } - if (strcasecmp(key, "RESULT") == 0) { + if (strcmp(key, "RESULT") == 0) { if (op > OP_MATCH_MAX) { err(rules->udev, "invalid RESULT operation\n"); goto invalid; } - rule_add_token(&rule_tmp, TK_M_RESULT, op, value, NULL); - valid = 1; + rule_add_key(&rule_tmp, TK_M_RESULT, op, value, NULL); continue; } - if (strncasecmp(key, "IMPORT", sizeof("IMPORT")-1) == 0) { + if (strncmp(key, "IMPORT", sizeof("IMPORT")-1) == 0) { attr = get_key_attribute(rules->udev, key + sizeof("IMPORT")-1); if (attr != NULL && strstr(attr, "program")) { dbg(rules->udev, "IMPORT will be executed\n"); - rule_add_token(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL); - valid = 1; + rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL); } else if (attr != NULL && strstr(attr, "file")) { dbg(rules->udev, "IMPORT will be included as file\n"); - rule_add_token(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL); - valid = 1; + 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_token(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL); - valid = 1; + rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL); } else { /* figure it out if it is executable */ char file[UTIL_PATH_SIZE]; char *pos; struct stat statbuf; - util_strlcpy(file, value, sizeof(file)); + /* allow programs in /lib/udev called without the path */ + if (value[0] != '/') + util_strscpyl(file, sizeof(file), LIBEXECDIR "/", value, NULL); + else + util_strscpy(file, sizeof(file), value); pos = strchr(file, ' '); if (pos) pos[0] = '\0'; - - /* allow programs in /lib/udev called without the path */ - if (strchr(file, '/') == NULL) { - util_strlcpy(file, UDEV_PREFIX "/lib/udev/", sizeof(file)); - util_strlcat(file, value, sizeof(file)); - pos = strchr(file, ' '); - if (pos) - pos[0] = '\0'; - } - dbg(rules->udev, "IMPORT auto mode for '%s'\n", file); - if (!lstat(file, &statbuf) && (statbuf.st_mode & S_IXUSR)) { + if (stat(file, &statbuf) == 0 && (statbuf.st_mode & S_IXUSR)) { dbg(rules->udev, "IMPORT will be executed (autotype)\n"); - rule_add_token(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL); - valid = 1; + rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL); } else { dbg(rules->udev, "IMPORT will be included as file (autotype)\n"); - rule_add_token(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL); - valid = 1; + rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL); } } continue; } - if (strncasecmp(key, "TEST", sizeof("TEST")-1) == 0) { + if (strncmp(key, "TEST", sizeof("TEST")-1) == 0) { mode_t mode = 0; if (op > OP_MATCH_MAX) { @@ -1247,197 +1453,197 @@ static int add_rule(struct udev_rules *rules, char *line, attr = get_key_attribute(rules->udev, key + sizeof("TEST")-1); if (attr != NULL) { mode = strtol(attr, NULL, 8); - rule_add_token(&rule_tmp, TK_M_TEST, op, value, &mode); + rule_add_key(&rule_tmp, TK_M_TEST, op, value, &mode); } else { - rule_add_token(&rule_tmp, TK_M_TEST, op, value, NULL); + rule_add_key(&rule_tmp, TK_M_TEST, op, value, NULL); } - valid = 1; continue; } - if (strncasecmp(key, "RUN", sizeof("RUN")-1) == 0) { + if (strncmp(key, "RUN", sizeof("RUN")-1) == 0) { int flag = 0; attr = get_key_attribute(rules->udev, key + sizeof("RUN")-1); - if (attr != NULL && strstr(attr, "ignore_error")) + if (attr != NULL && strstr(attr, "fail_event_on_error")) flag = 1; - rule_add_token(&rule_tmp, TK_A_RUN, op, value, &flag); - valid = 1; + rule_add_key(&rule_tmp, TK_A_RUN, op, value, &flag); continue; } - if (strcasecmp(key, "WAIT_FOR") == 0 || strcasecmp(key, "WAIT_FOR_SYSFS") == 0) { - rule_add_token(&rule_tmp, TK_M_WAITFOR, 0, value, NULL); - valid = 1; + if (strcmp(key, "WAIT_FOR") == 0 || strcmp(key, "WAIT_FOR_SYSFS") == 0) { + rule_add_key(&rule_tmp, TK_M_WAITFOR, 0, value, NULL); continue; } - if (strcasecmp(key, "LABEL") == 0) { + if (strcmp(key, "LABEL") == 0) { rule_tmp.rule.rule.label_off = add_string(rules, value); - valid = 1; continue; } - if (strcasecmp(key, "GOTO") == 0) { - rule_add_token(&rule_tmp, TK_A_GOTO, 0, value, NULL); - valid = 1; + if (strcmp(key, "GOTO") == 0) { + rule_add_key(&rule_tmp, TK_A_GOTO, 0, value, NULL); continue; } - if (strncasecmp(key, "NAME", sizeof("NAME")-1) == 0) { + if (strncmp(key, "NAME", sizeof("NAME")-1) == 0) { if (op < OP_MATCH_MAX) { - rule_add_token(&rule_tmp, TK_M_NAME, op, value, NULL); + rule_add_key(&rule_tmp, TK_M_NAME, op, value, NULL); } else { - if (value[0] == '\0') - dbg(rules->udev, "name empty, node creation suppressed\n"); - rule_add_token(&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_token(&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_token(&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.can_set_name = true; continue; } - if (strcasecmp(key, "SYMLINK") == 0) { - if (op < OP_MATCH_MAX) - rule_add_token(&rule_tmp, TK_M_DEVLINK, op, value, NULL); - else - rule_add_token(&rule_tmp, TK_A_DEVLINK, op, value, NULL); - valid = 1; + 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 { + 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; } - if (strcasecmp(key, "OWNER") == 0) { + if (strcmp(key, "OWNER") == 0) { uid_t uid; char *endptr; uid = strtoul(value, &endptr, 10); if (endptr[0] == '\0') { - rule_add_token(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); - } else if (rules->resolve_names && strchr("$%", value[0]) == NULL) { + rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); + } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) { uid = add_uid(rules, value); - rule_add_token(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); - } else { - rule_add_token(&rule_tmp, TK_A_OWNER, op, value, NULL); + rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); + } else if (rules->resolve_names >= 0) { + rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL); } - valid = 1; + rule_tmp.rule.rule.can_set_name = true; continue; } - if (strcasecmp(key, "GROUP") == 0) { + if (strcmp(key, "GROUP") == 0) { gid_t gid; char *endptr; gid = strtoul(value, &endptr, 10); if (endptr[0] == '\0') { - rule_add_token(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); - } else if (rules->resolve_names && strchr("$%", value[0]) == NULL) { + rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); + } else if ((rules->resolve_names > 0) && strchr("$%", value[0]) == NULL) { gid = add_gid(rules, value); - rule_add_token(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); - } else { - rule_add_token(&rule_tmp, TK_A_GROUP, op, value, NULL); + rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); + } else if (rules->resolve_names >= 0) { + rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL); } - valid = 1; + rule_tmp.rule.rule.can_set_name = true; continue; } - if (strcasecmp(key, "MODE") == 0) { + if (strcmp(key, "MODE") == 0) { mode_t mode; char *endptr; mode = strtol(value, &endptr, 8); if (endptr[0] == '\0') - rule_add_token(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode); + rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode); else - rule_add_token(&rule_tmp, TK_A_MODE, op, value, NULL); - valid = 1; + rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL); + rule_tmp.rule.rule.can_set_name = true; continue; } - if (strcasecmp(key, "OPTIONS") == 0) { + 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_token(&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_token(&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_token(&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_token(&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_token(&rule_tmp, TK_A_EVENT_TIMEOUT, 0, NULL, &tout); - dbg(rules->udev, "event timout=%i\n", tout); + rule_add_key(&rule_tmp, TK_M_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_token(&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_token(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, 0, NULL, NULL); + rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, op, NULL, NULL); + } + + pos = strstr(value, "db_persist"); + if (pos != NULL) + rule_add_key(&rule_tmp, TK_A_DB_PERSIST, op, NULL, NULL); + + pos = strstr(value, "nowatch"); + if (pos != NULL) { + const int off = 0; + + 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, op, NULL, &on); + dbg(rules->udev, "inotify watch of device requested\n"); + } } - if (strstr(value, "all_partitions") != NULL) { - int num = DEFAULT_FAKE_PARTITIONS_COUNT; - rule_add_token(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num); - dbg(rules->udev, "creation of partition nodes 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; } - valid = 1; + continue; } err(rules->udev, "unknown key '%s' in %s:%u\n", key, filename, lineno); } - if (physdev) - err(rules->udev, "PHYSDEV* values are deprecated and not available on recent kernels, \n" - "please fix it in %s:%u", filename, lineno); - - /* skip line if not any valid key was found */ - if (!valid) - goto invalid; - /* add rule token */ + rule_tmp.rule.rule.token_count = 1 + rule_tmp.token_cur; if (add_token(rules, &rule_tmp.rule) != 0) goto invalid; /* add tokens to list, sorted by type */ if (sort_token(rules, &rule_tmp) != 0) goto invalid; + return 0; invalid: err(rules->udev, "invalid rule '%s:%u'\n", filename, lineno); return -1; } -static int parse_file(struct udev_rules *rules, const char *filename) +static int parse_file(struct udev_rules *rules, const char *filename, unsigned short filename_off) { FILE *f; - unsigned int filename_off; unsigned int first_token; char line[UTIL_LINE_SIZE]; int line_nr = 0; @@ -1449,10 +1655,9 @@ static int parse_file(struct udev_rules *rules, const char *filename) if (f == NULL) return -1; - filename_off = add_string(rules, filename); first_token = rules->token_cur; - while(fgets(line, sizeof(line), f) != NULL) { + while (fgets(line, sizeof(line), f) != NULL) { char *key; size_t len; @@ -1474,6 +1679,8 @@ static int parse_file(struct udev_rules *rules, const char *filename) 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); } @@ -1500,6 +1707,7 @@ static int parse_file(struct udev_rules *rules, const char *filename) if (strcmp(label, &rules->buf[rules->tokens[j].rule.label_off]) != 0) continue; rules->tokens[i].key.rule_goto = j; + break; } if (rules->tokens[i].key.rule_goto == 0) err(rules->udev, "GOTO '%s' has no matching label in: '%s'\n", label, filename); @@ -1510,40 +1718,39 @@ static int parse_file(struct udev_rules *rules, const char *filename) static int add_matching_files(struct udev *udev, struct udev_list_node *file_list, const char *dirname, const char *suffix) { - struct dirent *ent; DIR *dir; + struct dirent *dent; char filename[UTIL_PATH_SIZE]; dbg(udev, "open directory '%s'\n", dirname); dir = opendir(dirname); if (dir == NULL) { - err(udev, "unable to open '%s': %m\n", dirname); + info(udev, "unable to open '%s': %m\n", dirname); return -1; } - while (1) { - ent = readdir(dir); - if (ent == NULL || ent->d_name[0] == '\0') - break; - - if ((ent->d_name[0] == '.') || (ent->d_name[0] == '#')) + for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { + if (dent->d_name[0] == '.') continue; /* look for file matching with specified suffix */ if (suffix != NULL) { const char *ext; - ext = strrchr(ent->d_name, '.'); + ext = strrchr(dent->d_name, '.'); if (ext == NULL) continue; if (strcmp(ext, suffix) != 0) continue; } - dbg(udev, "put file '%s/%s' into list\n", dirname, ent->d_name); - - snprintf(filename, sizeof(filename), "%s/%s", dirname, ent->d_name); - filename[sizeof(filename)-1] = '\0'; - udev_list_entry_add(udev, file_list, filename, NULL, 1, 1); + util_strscpyl(filename, sizeof(filename), dirname, "/", dent->d_name, NULL); + dbg(udev, "put file '%s' into list\n", filename); + /* + * the basename is the key, the filename the value + * identical basenames from different directories overwrite each other + * entries are sorted after basename + */ + udev_list_entry_add(udev, file_list, dent->d_name, filename, 1, 1); } closedir(dir); @@ -1553,115 +1760,104 @@ static int add_matching_files(struct udev *udev, struct udev_list_node *file_lis struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) { struct udev_rules *rules; - struct stat statbuf; - char filename[PATH_MAX]; struct udev_list_node file_list; - struct udev_list_entry *file_loop, *file_tmp; - unsigned int prev_rule; + struct udev_list_entry *file_loop; struct token end_token; - unsigned int i; - 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'; rules->buf_cur = 1; - info(udev, "prealloc %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n", - rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max); - - if (udev_get_rules_path(udev) != NULL) { - /* custom rules location for testing */ - add_matching_files(udev, &file_list, udev_get_rules_path(udev), ".rules"); - } else { - struct udev_list_node sort_list; - struct udev_list_entry *sort_loop, *sort_tmp; - - /* read user/custom rules */ - add_matching_files(udev, &file_list, SYSCONFDIR "/udev/rules.d", ".rules"); + dbg(udev, "prealloc %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n", + 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) { + 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)); + rules->trie_nodes_cur = 1; - /* read dynamic/temporary rules */ - util_strlcpy(filename, udev_get_dev_path(udev), sizeof(filename)); - util_strlcat(filename, "/.udev/rules.d", sizeof(filename)); - 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); - } - udev_list_init(&sort_list); - add_matching_files(udev, &sort_list, filename, ".rules"); + if (udev_get_rules_path(udev) == NULL) { + char filename[UTIL_PATH_SIZE]; - /* read default rules */ - add_matching_files(udev, &sort_list, UDEV_PREFIX "/lib/udev/rules.d", ".rules"); + /* /lib/udev -- default/package rules */ + add_matching_files(udev, &file_list, LIBEXECDIR "/rules.d", ".rules"); - /* sort all rules files by basename into list of files */ - udev_list_entry_foreach_safe(sort_loop, sort_tmp, udev_list_get_entry(&sort_list)) { - const char *sort_name = udev_list_entry_get_name(sort_loop); - const char *sort_base = strrchr(sort_name, '/'); + /* /etc/udev -- system-specific/user/admin rules */ + add_matching_files(udev, &file_list, SYSCONFDIR "/udev/rules.d", ".rules"); - if (sort_base == NULL) - continue; + /* /run/udev -- throw-away/temporary rules */ + util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/rules.d", NULL); + add_matching_files(udev, &file_list, filename, ".rules"); + } else { + /* custom rules files location for testing */ + add_matching_files(udev, &file_list, udev_get_rules_path(udev), ".rules"); + } - udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) { - const char *file_name = udev_list_entry_get_name(file_loop); - const char *file_base = strrchr(file_name, '/'); + /* add all filenames to the string buffer */ + udev_list_entry_foreach(file_loop, udev_list_get_entry(&file_list)) { + const char *filename = udev_list_entry_get_value(file_loop); + unsigned int filename_off; - if (file_base == NULL) - continue; - if (strcmp(file_base, sort_base) == 0) { - info(udev, "rule file basename '%s' already added, ignoring '%s'\n", - file_name, sort_name); - udev_list_entry_remove(sort_loop); - sort_loop = NULL; - break; - } - if (strcmp(file_base, sort_base) > 0) - break; - } - if (sort_loop != NULL) - udev_list_entry_move_before(sort_loop, file_loop); - } + 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_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 *file_name = udev_list_entry_get_name(file_loop); + /* parse all rules files */ + udev_list_entry_foreach(file_loop, udev_list_get_entry(&file_list)) { + const char *filename = udev_list_entry_get_value(file_loop); + unsigned int filename_off = udev_list_entry_get_flags(file_loop); + struct stat st; - if (stat(file_name, &statbuf) == 0 && statbuf.st_size > 0) - parse_file(rules, file_name); - else - info(udev, "can not read '%s'\n", file_name); - udev_list_entry_remove(file_loop); + if (stat(filename, &st) != 0) { + err(udev, "can not find '%s': %m\n", filename); + continue; + } + if (S_ISREG(st.st_mode) && st.st_size <= 0) { + info(udev, "ignore empty '%s'\n", filename); + continue; + } + if (S_ISCHR(st.st_mode)) { + info(udev, "ignore masked '%s'\n", filename); + continue; + } + parse_file(rules, filename, filename_off); } + udev_list_cleanup_entries(udev, &file_list); memset(&end_token, 0x00, sizeof(struct token)); end_token.type = TK_END; add_token(rules, &end_token); - /* link all TK_RULE tokens to be able to fast-forward to next TK_RULE */ - prev_rule = 0; - for (i = 1; i < rules->token_cur; i++) { - if (rules->tokens[i].type == TK_RULE) { - rules->tokens[prev_rule].rule.next_rule = i; - prev_rule = i; - } - } - /* shrink allocated token and string buffer */ if (rules->token_cur < rules->token_max) { struct token *tokens; @@ -1681,8 +1877,17 @@ struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) rules->buf_max = rules->buf_cur; } } - info(udev, "shrunk to %lu bytes tokens (%u * %zu bytes), %zu bytes buffer\n", + info(udev, "rules use %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n", rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max); + info(udev, "temporary index used %zu bytes (%u * %zu bytes)\n", + rules->trie_nodes_cur * sizeof(struct trie_node), + rules->trie_nodes_cur, sizeof(struct trie_node)); + + /* cleanup trie */ + free(rules->trie_nodes); + rules->trie_nodes = NULL; + rules->trie_nodes_cur = 0; + rules->trie_nodes_max = 0; /* cleanup uid/gid cache */ free(rules->uids); @@ -1704,6 +1909,7 @@ void udev_rules_unref(struct udev_rules *rules) return; free(rules->tokens); free(rules->buf); + free(rules->trie_nodes); free(rules->uids); free(rules->gids); free(rules); @@ -1713,7 +1919,7 @@ 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 = ""; @@ -1732,7 +1938,7 @@ 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, '|'); @@ -1754,7 +1960,7 @@ static int match_key(struct udev_rules *rules, struct token *token, const char * { char value[UTIL_PATH_SIZE]; - util_strlcpy(value, &rules->buf[token->key.value_off], sizeof(value)); + util_strscpy(value, sizeof(value), &rules->buf[token->key.value_off]); key_value = value; while (key_value != NULL) { pos = strchr(key_value, '|'); @@ -1762,7 +1968,7 @@ static int match_key(struct udev_rules *rules, struct token *token, const char * pos[0] = '\0'; pos = &pos[1]; } - dbg(rules->udev, "match %s '%s' <-> '%s'\n", token_str[token->type], key_value, val); + dbg(rules->udev, "match %s '%s' <-> '%s'\n", token_str(token->type), key_value, val); match = (fnmatch(key_value, val, 0) == 0); if (match) break; @@ -1773,55 +1979,69 @@ static int match_key(struct udev_rules *rules, struct token *token, const char * case GL_SOMETHING: match = (val[0] != '\0'); break; - case GL_FORMAT: case GL_UNSET: return -1; } if (match && (token->key.op == OP_MATCH)) { - dbg(rules->udev, "%s is true (matching value)\n", token_str[token->type]); + dbg(rules->udev, "%s is true (matching value)\n", token_str(token->type)); return 0; } if (!match && (token->key.op == OP_NOMATCH)) { - dbg(rules->udev, "%s is true (non-matching value)\n", token_str[token->type]); + dbg(rules->udev, "%s is true (non-matching value)\n", token_str(token->type)); return 0; } - dbg(rules->udev, "%s is not true\n", token_str[token->type]); + dbg(rules->udev, "%s is not true\n", token_str(token->type)); return -1; } static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur) { - const char *key_name = &rules->buf[cur->key.attr_off]; - const char *key_value = &rules->buf[cur->key.value_off]; - char value[UTIL_NAME_SIZE]; + const char *name; + char nbuf[UTIL_NAME_SIZE]; + const char *value; + char vbuf[UTIL_NAME_SIZE]; size_t len; - value[0] = '\0'; - if (key_name[0] == '[') { - char attr[UTIL_PATH_SIZE]; - - util_strlcpy(attr, key_name, sizeof(attr)); - util_resolve_subsys_kernel(event->udev, attr, value, sizeof(value), 1); + name = &rules->buf[cur->key.attr_off]; + switch (cur->key.attrsubst) { + case SB_FORMAT: + udev_event_apply_format(event, name, nbuf, sizeof(nbuf)); + name = nbuf; + /* fall through */ + case SB_NONE: + value = udev_device_get_sysattr_value(dev, name); + if (value == NULL) + return -1; + break; + case SB_SUBSYS: + if (util_resolve_subsys_kernel(event->udev, name, vbuf, sizeof(vbuf), 1) != 0) + return -1; + value = vbuf; + break; + default: + return -1; } - if (value[0] == '\0') { - const char *val; - val = udev_device_get_sysattr_value(dev, key_name); - if (val != NULL) - util_strlcpy(value, val, sizeof(value)); + /* remove trailing whitespace, if not asked to match for it */ + len = strlen(value); + if (len > 0 && isspace(value[len-1])) { + const char *key_value; + size_t klen; + + key_value = &rules->buf[cur->key.value_off]; + klen = strlen(key_value); + if (klen > 0 && !isspace(key_value[klen-1])) { + if (value != vbuf) { + util_strscpy(vbuf, sizeof(vbuf), value); + value = vbuf; + } + while (len > 0 && isspace(vbuf[--len])) + vbuf[len] = '\0'; + dbg(rules->udev, "removed trailing whitespace from '%s'\n", value); + } } - if (value[0] == '\0') - return -1; - /* strip trailing whitespace of value, if not asked to match for it */ - len = strlen(key_value); - if (len > 0 && !isspace(key_value[len-1])) { - len = strlen(value); - while (len > 0 && isspace(value[--len])) - value[len] = '\0'; - dbg(rules->udev, "removed trailing whitespace from '%s'\n", value); - } return match_key(rules, cur, value); } @@ -1831,26 +2051,32 @@ enum escape_type { ESCAPE_REPLACE, }; -int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event) +int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event, const sigset_t *sigmask) { struct token *cur; struct token *rule; enum escape_type esc = ESCAPE_UNSET; + bool can_set_name; if (rules->tokens == NULL) return -1; + can_set_name = ((strcmp(udev_device_get_action(event->dev), "remove") != 0) && + (major(udev_device_get_devnum(event->dev)) > 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) { - unsigned int idx; - + 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.can_set_name) + goto nomatch; esc = ESCAPE_UNSET; break; case TK_M_ACTION: @@ -1869,14 +2095,14 @@ 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; } } @@ -1890,13 +2116,10 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event break; case TK_M_ENV: { - struct udev_list_entry *list_entry; const char *key_name = &rules->buf[cur->key.attr_off]; const char *value; - list_entry = udev_device_get_properties_list_entry(event->dev); - list_entry = udev_list_entry_get_by_name(list_entry, key_name); - value = udev_list_entry_get_value(list_entry); + value = udev_device_get_property_value(event->dev, key_name); if (value == NULL) { dbg(event->udev, "ENV{%s} is not set, treat as empty\n", key_name); value = ""; @@ -1905,6 +2128,21 @@ 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; @@ -1918,8 +2156,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event char filename[UTIL_PATH_SIZE]; int found; - util_strlcpy(filename, &rules->buf[cur->key.value_off], sizeof(filename)); - udev_event_apply_format(event, filename, sizeof(filename)); + udev_event_apply_format(event, &rules->buf[cur->key.value_off], filename, sizeof(filename)); found = (wait_for_file(event->dev, filename, 10) == 0); if (!found && (cur->key.op != OP_NOMATCH)) goto nomatch; @@ -1938,12 +2175,12 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event /* get whole sequence of parent matches */ next = cur; - while (next->type < TK_M_PARENTS_MAX) + while (next->type > TK_M_PARENTS_MIN && next->type < TK_M_PARENTS_MAX) next++; /* 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)); @@ -1991,26 +2228,24 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event struct stat statbuf; int match; - util_strlcpy(filename, &rules->buf[cur->key.value_off], sizeof(filename)); - udev_event_apply_format(event, filename, sizeof(filename)); - if (util_resolve_subsys_kernel(event->udev, NULL, filename, sizeof(filename), 0) != 0) + udev_event_apply_format(event, &rules->buf[cur->key.value_off], filename, sizeof(filename)); + if (util_resolve_subsys_kernel(event->udev, filename, filename, sizeof(filename), 0) != 0) { if (filename[0] != '/') { char tmp[UTIL_PATH_SIZE]; - util_strlcpy(tmp, udev_device_get_syspath(event->dev), sizeof(tmp)); - util_strlcat(tmp, "/", sizeof(tmp)); - util_strlcat(tmp, filename, sizeof(tmp)); - util_strlcpy(filename, tmp, sizeof(filename)); + util_strscpy(tmp, sizeof(tmp), filename); + util_strscpyl(filename, sizeof(filename), + udev_device_get_syspath(event->dev), "/", tmp, NULL); } - + } attr_subst_subdir(filename, sizeof(filename)); match = (stat(filename, &statbuf) == 0); - info(event->udev, "'%s' %s", filename, match ? "exists\n" : "does not exist\n"); + dbg(event->udev, "'%s' %s", filename, match ? "exists\n" : "does not exist\n"); if (match && cur->key.mode > 0) { match = ((statbuf.st_mode & cur->key.mode) > 0); - info(event->udev, "'%s' has mode=%#o and %s %#o\n", filename, statbuf.st_mode, - match ? "matches" : "does not match", cur->key.mode); + dbg(event->udev, "'%s' has mode=%#o and %s %#o\n", filename, statbuf.st_mode, + match ? "matches" : "does not match", cur->key.mode); } if (match && cur->key.op == OP_NOMATCH) goto nomatch; @@ -2018,6 +2253,10 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event goto nomatch; break; } + case TK_M_EVENT_TIMEOUT: + info(event->udev, "OPTIONS event_timeout=%u\n", cur->key.event_timeout); + event->timeout_usec = cur->key.event_timeout * 1000 * 1000; + break; case TK_M_PROGRAM: { char program[UTIL_PATH_SIZE]; @@ -2026,10 +2265,14 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event free(event->program_result); event->program_result = NULL; - util_strlcpy(program, &rules->buf[cur->key.value_off], sizeof(program)); - udev_event_apply_format(event, program, sizeof(program)); + udev_event_apply_format(event, &rules->buf[cur->key.value_off], program, sizeof(program)); envp = udev_device_get_properties_envp(event->dev); - if (util_run_program(event->udev, program, envp, result, sizeof(result), NULL) != 0) { + info(event->udev, "PROGRAM '%s' %s:%u\n", + program, + &rules->buf[rule->rule.filename_off], + rule->rule.filename_line); + + if (udev_event_spawn(event, program, envp, sigmask, result, sizeof(result)) < 0) { if (cur->key.op != OP_NOMATCH) goto nomatch; } else { @@ -2037,7 +2280,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event util_remove_trailing_chars(result, '\n'); if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) { - count = util_replace_chars(result, ALLOWED_CHARS_INPUT); + count = udev_util_replace_chars(result, UDEV_ALLOWED_CHARS_INPUT); if (count > 0) info(event->udev, "%i character(s) replaced\n" , count); } @@ -2052,8 +2295,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event { char import[UTIL_PATH_SIZE]; - util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import)); - udev_event_apply_format(event, import, sizeof(import)); + udev_event_apply_format(event, &rules->buf[cur->key.value_off], import, sizeof(import)); if (import_file_into_properties(event->dev, import) != 0) if (cur->key.op != OP_NOMATCH) goto nomatch; @@ -2063,19 +2305,82 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event { char import[UTIL_PATH_SIZE]; - util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import)); - udev_event_apply_format(event, import, sizeof(import)); - if (import_program_into_properties(event->dev, import) != 0) + udev_event_apply_format(event, &rules->buf[cur->key.value_off], import, sizeof(import)); + info(event->udev, "IMPORT '%s' %s:%u\n", + import, + &rules->buf[rule->rule.filename_off], + rule->rule.filename_line); + + if (import_program_into_properties(event, import, sigmask) != 0) + if (cur->key.op != OP_NOMATCH) + 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]; - util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import)); - udev_event_apply_format(event, import, sizeof(import)); + udev_event_apply_format(event, &rules->buf[cur->key.value_off], import, sizeof(import)); if (import_parent_into_properties(event->dev, import) != 0) if (cur->key.op != OP_NOMATCH) goto nomatch; @@ -2085,23 +2390,21 @@ 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) + case TK_A_DB_PERSIST: + udev_device_set_db_persist(event->dev); + break; + case TK_A_INOTIFY_WATCH: + if (event->inotify_watch_final) break; - udev_device_set_num_fake_partitions(event->dev, cur->key.num_fake_part); + if (cur->key.op == OP_ASSIGN_FINAL) + event->inotify_watch_final = true; + event->inotify_watch = cur->key.watch; break; case TK_A_DEVLINK_PRIO: udev_device_set_devlink_priority(event->dev, cur->key.devlink_prio); @@ -2113,10 +2416,13 @@ 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; - util_strlcpy(owner, &rules->buf[cur->key.value_off], sizeof(owner)); - udev_event_apply_format(event, owner, sizeof(owner)); + 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", + event->uid, + &rules->buf[rule->rule.filename_off], + rule->rule.filename_line); break; } case TK_A_GROUP: @@ -2126,10 +2432,13 @@ 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; - util_strlcpy(group, &rules->buf[cur->key.value_off], sizeof(group)); - udev_event_apply_format(event, group, sizeof(group)); + 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", + event->gid, + &rules->buf[rule->rule.filename_off], + rule->rule.filename_line); break; } case TK_A_MODE: @@ -2140,36 +2449,53 @@ 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; - util_strlcpy(mode, &rules->buf[cur->key.value_off], sizeof(mode)); - udev_event_apply_format(event, mode, sizeof(mode)); + 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, + &rules->buf[rule->rule.filename_off], + rule->rule.filename_line); break; } case TK_A_OWNER_ID: 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, + &rules->buf[rule->rule.filename_off], + rule->rule.filename_line); break; case TK_A_GROUP_ID: 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, + &rules->buf[rule->rule.filename_off], + rule->rule.filename_line); break; case TK_A_MODE_ID: 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: { @@ -2180,16 +2506,21 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event char temp_value[UTIL_NAME_SIZE]; struct udev_list_entry *entry; - util_strlcpy(temp_value, value, sizeof(temp_value)); - udev_event_apply_format(event, temp_value, sizeof(temp_value)); + udev_event_apply_format(event, value, temp_value, sizeof(temp_value)); entry = udev_device_add_property(event->dev, name, temp_value); - /* store in db */ - udev_list_entry_set_flag(entry, 1); + /* store in db, skip private keys */ + if (name[0] != '.') + 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]; @@ -2199,21 +2530,19 @@ 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; - if (name[0] == '\0') { - free(event->name); - event->name = NULL; - break; - } - util_strlcpy(name_str, name, sizeof(name_str)); - udev_event_apply_format(event, name_str, sizeof(name_str)); + event->name_final = true; + udev_event_apply_format(event, name, name_str, sizeof(name_str)); if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) { - count = util_replace_chars(name_str, ALLOWED_CHARS_FILE); + count = udev_util_replace_chars(name_str, "/"); if (count > 0) info(event->udev, "%i character(s) replaced\n", count); - free(event->name); - event->name = strdup(name_str); } + free(event->name); + event->name = strdup(name_str); + info(event->udev, "NAME '%s' %s:%u\n", + event->name, + &rules->buf[rule->rule.filename_off], + rule->rule.filename_line); break; } case TK_A_DEVLINK: @@ -2228,17 +2557,16 @@ 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); /* allow multiple symlinks separated by spaces */ - util_strlcpy(temp, &rules->buf[cur->key.value_off], sizeof(temp)); - udev_event_apply_format(event, temp, sizeof(temp)); + udev_event_apply_format(event, &rules->buf[cur->key.value_off], temp, sizeof(temp)); if (esc == ESCAPE_UNSET) - count = util_replace_chars(temp, ALLOWED_CHARS_FILE " "); + count = udev_util_replace_chars(temp, "/ "); else if (esc == ESCAPE_REPLACE) - count = util_replace_chars(temp, ALLOWED_CHARS_FILE); + count = udev_util_replace_chars(temp, "/"); if (count > 0) info(event->udev, "%i character(s) replaced\n" , count); dbg(event->udev, "rule applied, added symlink(s) '%s'\n", temp); @@ -2246,33 +2574,25 @@ 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, "add symlink '%s'\n", pos); - util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename)); - util_strlcat(filename, "/", sizeof(filename)); - util_strlcat(filename, pos, sizeof(filename)); - udev_device_add_devlink(event->dev, filename); + 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, cur->key.devlink_unique); while (isspace(next[1])) next++; pos = &next[1]; next = strchr(pos, ' '); } if (pos[0] != '\0') { - info(event->udev, "add symlink '%s'\n", pos); - util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename)); - util_strlcat(filename, "/", sizeof(filename)); - util_strlcat(filename, pos, sizeof(filename)); - udev_device_add_devlink(event->dev, filename); + 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, 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]; @@ -2280,23 +2600,18 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event char value[UTIL_NAME_SIZE]; FILE *f; - util_strlcpy(attr, key_name, sizeof(attr)); - if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0) { - util_strlcpy(attr, udev_device_get_syspath(event->dev), sizeof(attr)); - util_strlcat(attr, "/", sizeof(attr)); - util_strlcat(attr, key_name, sizeof(attr)); - } - + if (util_resolve_subsys_kernel(event->udev, key_name, attr, sizeof(attr), 0) != 0) + util_strscpyl(attr, sizeof(attr), udev_device_get_syspath(event->dev), "/", key_name, NULL); attr_subst_subdir(attr, sizeof(attr)); - util_strlcpy(value, &rules->buf[cur->key.value_off], sizeof(value)); - udev_event_apply_format(event, value, sizeof(value)); - info(event->udev, "writing '%s' to sysfs file '%s'\n", value, attr); + udev_event_apply_format(event, &rules->buf[cur->key.value_off], value, sizeof(value)); + info(event->udev, "ATTR '%s' writing '%s' %s:%u\n", attr, value, + &rules->buf[rule->rule.filename_off], + rule->rule.filename_line); f = fopen(attr, "w"); if (f != NULL) { - if (!event->test) - if (fprintf(f, "%s", value) <= 0) - err(event->udev, "error writing ATTR{%s}: %m\n", attr); + if (fprintf(f, "%s", value) <= 0) + err(event->udev, "error writing ATTR{%s}: %m\n", attr); fclose(f); } else { err(event->udev, "error opening ATTR{%s} for writing: %m\n", attr); @@ -2309,19 +2624,25 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL) udev_list_cleanup_entries(event->udev, &event->run_list); + info(event->udev, "RUN '%s' %s:%u\n", + &rules->buf[cur->key.value_off], + &rules->buf[rule->rule.filename_off], + 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: + if (cur->key.rule_goto == 0) + break; cur = &rules->tokens[cur->key.rule_goto]; continue; - case TK_A_LAST_RULE: case TK_END: - break; + return 0; + case TK_M_PARENTS_MIN: case TK_M_PARENTS_MAX: case TK_M_MAX: case TK_UNSET: @@ -2333,11 +2654,80 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event continue; nomatch: /* fast-forward to next rule */ - idx = rule->rule.next_rule; - if (idx == 0) + cur = rule + rule->rule.token_count; + dbg(rules->udev, "forward to rule: %u\n", + (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; - dbg(rules->udev, "forward to rule: %u\n", idx); - cur = &rules->tokens[idx]; + 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; } - return 0; }