X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udev_rules_parse.c;h=00b53285faf7796bce19e14d1b792a376955046b;hp=4fcd6db08ee362bec4233683df6143956baa1364;hb=273bebdba66cd5543dc1b076447e3275c81c221c;hpb=1aa1e24848903d11780db1ade355be73ad61a937 diff --git a/udev_rules_parse.c b/udev_rules_parse.c index 4fcd6db08..00b53285f 100644 --- a/udev_rules_parse.c +++ b/udev_rules_parse.c @@ -1,8 +1,6 @@ /* - * udev_rules_parse.c - * * Copyright (C) 2003,2004 Greg Kroah-Hartman - * Copyright (C) 2003-2005 Kay Sievers + * Copyright (C) 2003-2006 Kay Sievers * * 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 the @@ -15,7 +13,7 @@ * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * */ @@ -219,7 +217,7 @@ static int add_rule_key_pair(struct udev_rule *rule, struct key_pairs *pairs, size_t key_len = strnlen(key, PATH_SIZE); if (pairs->count >= PAIRS_MAX) { - err("skip, too many keys in a single rule"); + err("skip, too many keys of the same type in a single rule"); return -1; } @@ -235,7 +233,7 @@ static int add_rule_key_pair(struct udev_rule *rule, struct key_pairs *pairs, return 0; } -static int add_to_rules(struct udev_rules *rules, char *line) +static int add_to_rules(struct udev_rules *rules, char *line, const char *filename, unsigned int lineno) { struct udev_rule *rule; size_t rule_size; @@ -243,6 +241,7 @@ static int add_to_rules(struct udev_rules *rules, char *line) char *linepos; char *attr; size_t padding; + int physdev = 0; int retval; /* get all the keys */ @@ -263,84 +262,154 @@ static int add_to_rules(struct udev_rules *rules, char *line) if (retval) break; - if (strcasecmp(key, "LABEL") == 0) { - add_rule_key(rule, &rule->label, operation, value); + if (strcasecmp(key, "ACTION") == 0) { + if (operation != KEY_OP_MATCH && + operation != KEY_OP_NOMATCH) { + err("invalid ACTION operation"); + goto invalid; + } + add_rule_key(rule, &rule->action, operation, value); valid = 1; continue; } - if (strcasecmp(key, "GOTO") == 0) { - add_rule_key(rule, &rule->goto_label, operation, value); + if (strcasecmp(key, "DEVPATH") == 0) { + if (operation != KEY_OP_MATCH && + operation != KEY_OP_NOMATCH) { + err("invalid DEVPATH operation"); + goto invalid; + } + add_rule_key(rule, &rule->devpath, operation, value); valid = 1; continue; } if (strcasecmp(key, "KERNEL") == 0) { - add_rule_key(rule, &rule->kernel_name, operation, value); + if (operation != KEY_OP_MATCH && + operation != KEY_OP_NOMATCH) { + err("invalid KERNEL operation"); + goto invalid; + } + add_rule_key(rule, &rule->kernel, operation, value); valid = 1; continue; } if (strcasecmp(key, "SUBSYSTEM") == 0) { + if (operation != KEY_OP_MATCH && + operation != KEY_OP_NOMATCH) { + err("invalid SUBSYSTEM operation"); + goto invalid; + } add_rule_key(rule, &rule->subsystem, operation, value); valid = 1; continue; } - if (strcasecmp(key, "ACTION") == 0) { - add_rule_key(rule, &rule->action, operation, value); + if (strcasecmp(key, "DRIVER") == 0) { + add_rule_key(rule, &rule->driver, operation, value); valid = 1; continue; } - if (strcasecmp(key, "DEVPATH") == 0) { - add_rule_key(rule, &rule->devpath, operation, value); + if (strncasecmp(key, "ATTR{", sizeof("ATTR{")-1) == 0) { + attr = get_key_attribute(key + sizeof("ATTR")-1); + if (attr == NULL) { + err("error parsing ATTR attribute"); + goto invalid; + } + if (add_rule_key_pair(rule, &rule->attr, operation, attr, value) != 0) + goto invalid; valid = 1; continue; } - if (strcasecmp(key, "BUS") == 0) { - add_rule_key(rule, &rule->bus, operation, value); + if (strcasecmp(key, "KERNELS") == 0 || + strcasecmp(key, "ID") == 0) { + if (operation != KEY_OP_MATCH && + operation != KEY_OP_NOMATCH) { + err("invalid KERNELS operation"); + goto invalid; + } + add_rule_key(rule, &rule->kernels, operation, value); valid = 1; continue; } - if (strcasecmp(key, "ID") == 0) { - add_rule_key(rule, &rule->id, operation, value); + if (strcasecmp(key, "SUBSYSTEMS") == 0 || + strcasecmp(key, "BUS") == 0) { + if (operation != KEY_OP_MATCH && + operation != KEY_OP_NOMATCH) { + err("invalid SUBSYSTEMS operation"); + goto invalid; + } + add_rule_key(rule, &rule->subsystems, operation, value); valid = 1; continue; } - if (strncasecmp(key, "SYSFS", sizeof("SYSFS")-1) == 0) { - attr = get_key_attribute(key + sizeof("SYSFS")-1); - if (attr == NULL) { - err("error parsing SYSFS attribute in '%s'", line); - continue; + if (strcasecmp(key, "DRIVERS") == 0) { + if (operation != KEY_OP_MATCH && + operation != KEY_OP_NOMATCH) { + err("invalid DRIVERS operation"); + goto invalid; } - add_rule_key_pair(rule, &rule->sysfs, operation, attr, value); + add_rule_key(rule, &rule->drivers, operation, value); valid = 1; continue; } - if (strcasecmp(key, "WAIT_FOR_SYSFS") == 0) { - add_rule_key(rule, &rule->wait_for_sysfs, operation, value); + if (strncasecmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0 || + strncasecmp(key, "SYSFS{", sizeof("SYSFS{")-1) == 0) { + if (operation != KEY_OP_MATCH && + operation != KEY_OP_NOMATCH) { + err("invalid ATTRS operation"); + goto invalid; + } + attr = get_key_attribute(key + sizeof("ATTRS")-1); + if (attr == NULL) { + err("error parsing ATTRS attribute"); + goto invalid; + } + if (strncmp(attr, "device/", 7) == 0) + err("the 'device' link is deprecated and will be removed from a future kernel, " + "please fix it in %s:%u", filename, lineno); + else if (strchr(attr, '/') != NULL) + err("do not reference parent sysfs directories directly, that may break with a future kernel, " + "please fix it in %s:%u", filename, lineno); + if (add_rule_key_pair(rule, &rule->attrs, operation, attr, value) != 0) + goto invalid; valid = 1; continue; } - if (strncasecmp(key, "ENV", sizeof("ENV")-1) == 0) { + if (strncasecmp(key, "ENV{", sizeof("ENV{")-1) == 0) { attr = get_key_attribute(key + sizeof("ENV")-1); if (attr == NULL) { err("error parsing ENV attribute"); - continue; + goto invalid; } - add_rule_key_pair(rule, &rule->env, operation, attr, value); + if (strncmp(attr, "PHYSDEV", 7) == 0) + physdev = 1; + if (add_rule_key_pair(rule, &rule->env, operation, attr, value) != 0) + goto invalid; + valid = 1; + continue; + } + + if (strcasecmp(key, "PROGRAM") == 0) { + add_rule_key(rule, &rule->program, operation, value); valid = 1; continue; } - if (strcasecmp(key, "MODALIAS") == 0) { - add_rule_key(rule, &rule->modalias, operation, value); + if (strcasecmp(key, "RESULT") == 0) { + if (operation != KEY_OP_MATCH && + operation != KEY_OP_NOMATCH) { + err("invalid RESULT operation"); + goto invalid; + } + add_rule_key(rule, &rule->result, operation, value); valid = 1; continue; } @@ -366,6 +435,16 @@ static int add_to_rules(struct udev_rules *rules, char *line) pos = strchr(file, ' '); if (pos) pos[0] = '\0'; + + /* allow programs in /lib/udev called without the path */ + if (strchr(file, '/') == NULL) { + strlcpy(file, "/lib/udev/", sizeof(file)); + strlcat(file, value, sizeof(file)); + pos = strchr(file, ' '); + if (pos) + pos[0] = '\0'; + } + dbg("IMPORT auto mode for '%s'", file); if (!lstat(file, &stats) && (stats.st_mode & S_IXUSR)) { dbg("IMPORT is executable, will be executed (autotype)"); @@ -380,20 +459,26 @@ static int add_to_rules(struct udev_rules *rules, char *line) continue; } - if (strcasecmp(key, "DRIVER") == 0) { - add_rule_key(rule, &rule->driver, operation, value); + if (strcasecmp(key, "RUN") == 0) { + add_rule_key(rule, &rule->run, operation, value); valid = 1; continue; } - if (strcasecmp(key, "RESULT") == 0) { - add_rule_key(rule, &rule->result, operation, value); + if (strcasecmp(key, "WAIT_FOR_SYSFS") == 0) { + add_rule_key(rule, &rule->wait_for_sysfs, operation, value); valid = 1; continue; } - if (strcasecmp(key, "PROGRAM") == 0) { - add_rule_key(rule, &rule->program, operation, value); + if (strcasecmp(key, "LABEL") == 0) { + add_rule_key(rule, &rule->label, operation, value); + valid = 1; + continue; + } + + if (strcasecmp(key, "GOTO") == 0) { + add_rule_key(rule, &rule->goto_label, operation, value); valid = 1; continue; } @@ -411,7 +496,7 @@ static int add_to_rules(struct udev_rules *rules, char *line) } } if (value[0] == '\0') - dbg("name empty, not creation supressed"); + dbg("name empty, node creation supressed"); add_rule_key(rule, &rule->name, operation, value); continue; } @@ -467,12 +552,6 @@ static int add_to_rules(struct udev_rules *rules, char *line) continue; } - if (strcasecmp(key, "RUN") == 0) { - add_rule_key(rule, &rule->run, operation, value); - valid = 1; - continue; - } - if (strcasecmp(key, "OPTIONS") == 0) { if (strstr(value, "last_rule") != NULL) { dbg("last rule to be applied"); @@ -494,14 +573,16 @@ static int add_to_rules(struct udev_rules *rules, char *line) continue; } - err("unknown key '%s', in '%s'", key, line); + err("unknown key '%s' in %s:%u", key, filename, lineno); } + if (physdev && rule->wait_for_sysfs.operation == KEY_OP_UNSET) + err("PHYSDEV* values are deprecated and will be removed from a future kernel, " + "please fix it in %s:%u", filename, lineno); + /* skip line if not any valid key was found */ - if (!valid) { - err("invalid rule '%s'", line); - goto exit; - } + if (!valid) + goto invalid; /* grow buffer and add rule */ rule_size = sizeof(struct udev_rule) + rule->bufsize; @@ -521,13 +602,18 @@ static int add_to_rules(struct udev_rules *rules, char *line) exit: free(rule); return 0; + +invalid: + free(rule); + err("invalid rule '%s:%u'", filename, lineno); + return -1; } static int parse_file(struct udev_rules *rules, const char *filename) { char line[LINE_SIZE]; char *bufline; - int lineno; + unsigned int lineno; char *buf; size_t bufsize; size_t cur; @@ -538,7 +624,7 @@ static int parse_file(struct udev_rules *rules, const char *filename) err("can't open '%s' as rules file: %s", filename, strerror(errno)); return -1; } - dbg("reading '%s' as rules file", filename); + info("reading '%s' as rules file", filename); /* loop through the whole file */ cur = 0; @@ -551,11 +637,6 @@ static int parse_file(struct udev_rules *rules, const char *filename) cur += count+1; lineno++; - if (count >= sizeof(line)) { - info("line too long, rule skipped %s, line %d", filename, lineno); - continue; - } - /* eat the whitespace */ while ((count > 0) && isspace(bufline[0])) { bufline++; @@ -568,7 +649,12 @@ static int parse_file(struct udev_rules *rules, const char *filename) if (bufline[0] == COMMENT_CHARACTER) continue; - /* skip backslash and newline from multi line rules */ + if (count >= sizeof(line)) { + err("line too long, rule skipped '%s:%u'", filename, lineno); + continue; + } + + /* skip backslash and newline from multiline rules */ for (i = j = 0; i < count; i++) { if (bufline[i] == '\\' && bufline[i+1] == '\n') continue; @@ -578,7 +664,7 @@ static int parse_file(struct udev_rules *rules, const char *filename) line[j] = '\0'; dbg("read '%s'", line); - add_to_rules(rules, line); + add_to_rules(rules, line, filename, lineno); } file_unmap(buf, bufsize); @@ -594,18 +680,18 @@ int udev_rules_init(struct udev_rules *rules, int resolve_names) rules->resolve_names = resolve_names; /* parse rules file or all matching files in directory */ - if (stat(udev_rules_filename, &stats) != 0) + if (stat(udev_rules_dir, &stats) != 0) return -1; if ((stats.st_mode & S_IFMT) != S_IFDIR) { - dbg("parse single rules file '%s'", udev_rules_filename); - retval = parse_file(rules, udev_rules_filename); + dbg("parse single rules file '%s'", udev_rules_dir); + retval = parse_file(rules, udev_rules_dir); } else { struct name_entry *name_loop, *name_tmp; LIST_HEAD(name_list); - dbg("parse rules directory '%s'", udev_rules_filename); - retval = add_matching_files(&name_list, udev_rules_filename, RULEFILE_SUFFIX); + dbg("parse rules directory '%s'", udev_rules_dir); + retval = add_matching_files(&name_list, udev_rules_dir, RULESFILE_SUFFIX); list_for_each_entry_safe(name_loop, name_tmp, &name_list, node) { if (stat(name_loop->name, &stats) == 0) {