#define PREALLOC_TOKEN 2048
#define PREALLOC_STRBUF 32 * 1024
-enum key_operation {
- KEY_OP_UNSET,
- KEY_OP_MATCH,
- KEY_OP_NOMATCH,
- KEY_OP_ADD,
- KEY_OP_ASSIGN,
- KEY_OP_ASSIGN_FINAL,
+/* KEY=="", KEY!="", KEY+="", KEY="", KEY:="" */
+enum operation_type {
+ OP_UNSET,
+
+ OP_MATCH,
+ OP_NOMATCH,
+ OP_MATCH_MAX,
+
+ OP_ADD,
+ OP_ASSIGN,
+ OP_ASSIGN_FINAL,
};
static const char *operation_str[] = {
- [KEY_OP_MATCH] = "match",
- [KEY_OP_NOMATCH] = "nomatch",
- [KEY_OP_ADD] = "add",
- [KEY_OP_ASSIGN] = "assign",
- [KEY_OP_ASSIGN_FINAL] = "assign-final",
+ [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 */
+ GL_GLOB, /* shell globs ?,*,[] */
+ 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",
+};
+#endif
+
+/* tokens of a rule are sorted/handled in this order */
enum token_type {
- TK_UNDEF,
+ TK_UNSET,
TK_RULE,
- TK_M_WAITFOR, /* val */
TK_M_ACTION, /* val */
TK_M_DEVPATH, /* val */
TK_M_KERNEL, /* val */
TK_M_ENV, /* val, attr */
TK_M_SUBSYSTEM, /* val */
TK_M_DRIVER, /* val */
+ TK_M_WAITFOR, /* val */
TK_M_ATTR, /* val, attr */
TK_M_KERNELS, /* val */
TK_M_SUBSYSTEMS, /* val */
TK_M_DRIVERS, /* val */
TK_M_ATTRS, /* val, attr */
- TK_PARENTS_MAX,
+ TK_M_PARENTS_MAX,
TK_M_TEST, /* val, mode_t */
TK_M_PROGRAM, /* val */
TK_M_IMPORT_PROG, /* val */
TK_M_IMPORT_PARENT, /* val */
TK_M_RESULT, /* val */
+ TK_M_MAX,
TK_A_IGNORE_DEVICE,
TK_A_STRING_ESCAPE_NONE,
};
static const char *token_str[] = {
- [TK_UNDEF] = "UNDEF",
+ [TK_UNSET] = "UNSET",
[TK_RULE] = "RULE",
- [TK_M_WAITFOR] = "M WAITFOR",
[TK_M_ACTION] = "M ACTION",
[TK_M_DEVPATH] = "M DEVPATH",
[TK_M_KERNEL] = "M KERNEL",
[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_PARENTS_MAX] = "PARENTS_MAX",
+ [TK_M_PARENTS_MAX] = "M PARENTS_MAX",
[TK_M_TEST] = "M TEST",
[TK_M_PROGRAM] = "M PROGRAM",
[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",
unsigned int filename_off;
} rule;
struct {
- enum key_operation op;
+ unsigned short op;
+ unsigned short glob;
unsigned int value_off;
union {
unsigned int attr_off;
unsigned int token_cur;
};
+struct uid_gid {
+ unsigned int name_off;
+ union {
+ uid_t uid;
+ gid_t gid;
+ };
+};
+
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, 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;
};
-/* we could lookup and return existing strings, or tails of strings */
+/* NOTE: we could lookup and return existing strings, or tails of strings */
static int add_string(struct udev_rules *rules, const char *str)
{
size_t len = strlen(str)+1;
int off;
+ /* offset 0 is always '\0' */
+ if (str[0] == '\0')
+ return 0;
+
+ /* grow buffer if needed */
if (rules->buf_cur + len+1 >= rules->buf_max) {
char *buf;
unsigned int add;
/* double the buffer size */
add = rules->buf_max;
- if (add < len)
- add = len;
+ if (add < len * 8)
+ add = len * 8;
buf = realloc(rules->buf, rules->buf_max + add);
if (buf == NULL)
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;
unsigned int add;
/* double the buffer size */
add = rules->token_max;
- if (add < 1)
- add = 1;
+ if (add < 8)
+ add = 8;
tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token));
if (tokens == NULL)
return 0;
}
+static uid_t add_uid(struct udev_rules *rules, const char *owner)
+{
+ unsigned int i;
+ uid_t uid;
+ unsigned int off;
+
+ /* lookup, if we know it already */
+ for (i = 0; i < rules->uids_cur; i++) {
+ off = rules->uids[i].name_off;
+ if (strcmp(&rules->buf[off], owner) == 0) {
+ uid = rules->uids[i].uid;
+ dbg(rules->udev, "return existing %u for '%s'\n", uid, owner);
+ return uid;
+ }
+ }
+ uid = util_lookup_user(rules->udev, owner);
+
+ /* grow buffer if needed */
+ if (rules->uids_cur+1 >= rules->uids_max) {
+ struct uid_gid *uids;
+ unsigned int add;
+
+ /* double the buffer size */
+ add = rules->uids_max;
+ if (add < 1)
+ add = 8;
+
+ 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);
+ rules->uids = uids;
+ rules->uids_max += add;
+ }
+ rules->uids[rules->uids_cur].uid = uid;
+ off = add_string(rules, owner);
+ if (off <= 0)
+ return uid;
+ rules->uids[rules->uids_cur].name_off = off;
+ rules->uids_cur++;
+ return uid;
+}
+
+static gid_t add_gid(struct udev_rules *rules, const char *group)
+{
+ unsigned int i;
+ gid_t gid;
+ unsigned int off;
+
+ /* lookup, if we know it already */
+ for (i = 0; i < rules->gids_cur; i++) {
+ off = rules->gids[i].name_off;
+ if (strcmp(&rules->buf[off], group) == 0) {
+ gid = rules->gids[i].gid;
+ dbg(rules->udev, "return existing %u for '%s'\n", gid, group);
+ return gid;
+ }
+ }
+ gid = util_lookup_group(rules->udev, group);
+
+ /* grow buffer if needed */
+ if (rules->gids_cur+1 >= rules->gids_max) {
+ struct uid_gid *gids;
+ unsigned int add;
+
+ /* double the buffer size */
+ add = rules->gids_max;
+ if (add < 1)
+ add = 8;
+
+ 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);
+ rules->gids = gids;
+ rules->gids_max += add;
+ }
+ rules->gids[rules->gids_cur].gid = gid;
+ off = add_string(rules, group);
+ if (off <= 0)
+ return gid;
+ rules->gids[rules->gids_cur].name_off = off;
+ rules->gids_cur++;
+ return gid;
+}
+
static int import_property_from_string(struct udev_device *dev, char *line)
{
struct udev *udev = udev_device_get_udev(dev);
return found;
}
-static int get_key(struct udev *udev, char **line, char **key, enum key_operation *op, char **value)
+static int get_key(struct udev *udev, char **line, char **key, enum operation_type *op, char **value)
{
char *linepos;
char *temp;
/* get operation type */
if (linepos[0] == '=' && linepos[1] == '=') {
- *op = KEY_OP_MATCH;
+ *op = OP_MATCH;
linepos += 2;
} else if (linepos[0] == '!' && linepos[1] == '=') {
- *op = KEY_OP_NOMATCH;
+ *op = OP_NOMATCH;
linepos += 2;
} else if (linepos[0] == '+' && linepos[1] == '=') {
- *op = KEY_OP_ADD;
+ *op = OP_ADD;
linepos += 2;
} else if (linepos[0] == '=') {
- *op = KEY_OP_ASSIGN;
+ *op = OP_ASSIGN;
linepos++;
} else if (linepos[0] == ':' && linepos[1] == '=') {
- *op = KEY_OP_ASSIGN_FINAL;
+ *op = OP_ASSIGN_FINAL;
linepos += 2;
} else
return -1;
if (linepos[0] == '\0')
return -1;
- /* get the value*/
+ /* get the value */
if (linepos[0] == '"')
linepos++;
else
return -1;
*value = linepos;
+ /* terminate */
temp = strchr(linepos, '"');
if (!temp)
return -1;
}
static int rule_add_token(struct rule_tmp *rule_tmp, enum token_type type,
- enum key_operation op,
+ enum operation_type op,
const char *value, const void *data)
{
struct token *token = &rule_tmp->token[rule_tmp->token_cur];
const char *attr = data;
- mode_t mode = 0000;
+ enum string_glob_type glob;
+
+ memset(token, 0x00, sizeof(struct token));
switch (type) {
- case TK_M_WAITFOR:
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:
token->key.attr_off = add_string(rule_tmp->rules, attr);
break;
case TK_M_TEST:
- if (data != NULL)
- mode = *(mode_t *)data;
token->key.value_off = add_string(rule_tmp->rules, value);
- token->key.mode = mode;
+ if (data != NULL)
+ token->key.mode = *(mode_t *)data;
break;
case TK_A_IGNORE_DEVICE:
case TK_A_STRING_ESCAPE_NONE:
token->key.event_timeout = *(int *)data;
break;
case TK_RULE:
- case TK_PARENTS_MAX:
+ case TK_M_PARENTS_MAX:
+ case TK_M_MAX:
case TK_END:
- case TK_UNDEF:
+ 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");
static void dump_token(struct udev_rules *rules, struct token *token)
{
enum token_type type = token->type;
- enum key_operation op = token->key.op;
+ 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];
&rules->buf[token->rule.label_off]);
break;
}
- case TK_M_WAITFOR:
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_A_GROUP:
case TK_A_MODE:
case TK_A_RUN:
- dbg(rules->udev, "%s %s '%s'\n", token_str[type], operation_str[op], value);
+ 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'\n", token_str[type], operation_str[op], attr, value);
+ 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:
dbg(rules->udev, "%s\n", token_str[type]);
break;
case TK_M_TEST:
- dbg(rules->udev, "%s %s '%s' %#o\n", token_str[type], operation_str[op], value, token->key.mode);
+ 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);
case TK_END:
dbg(rules->udev, "* %s\n", token_str[type]);
break;
- case TK_PARENTS_MAX:
- case TK_UNDEF:
+ case TK_M_PARENTS_MAX:
+ case TK_M_MAX:
+ case TK_UNSET:
dbg(rules->udev, "unknown type %u\n", type);
break;
}
unsigned int end = rule_tmp->token_cur;
for (i = 0; i < rule_tmp->token_cur; i++) {
- enum token_type next_val = TK_UNDEF;
+ enum token_type next_val = TK_UNSET;
unsigned int next_idx;
unsigned int j;
/* find smallest value */
for (j = start; j < end; j++) {
- if (rule_tmp->token[j].type == TK_UNDEF)
+ if (rule_tmp->token[j].type == TK_UNSET)
continue;
- if (next_val == TK_UNDEF || rule_tmp->token[j].type < next_val) {
+ if (next_val == TK_UNSET || rule_tmp->token[j].type < next_val) {
next_val = rule_tmp->token[j].type;
next_idx = j;
}
/* add token and mark done */
if (add_token(rules, &rule_tmp->token[next_idx]) != 0)
return -1;
- rule_tmp->token[next_idx].type = TK_UNDEF;
+ rule_tmp->token[next_idx].type = TK_UNSET;
/* shrink range */
if (next_idx == start)
while (1) {
char *key;
char *value;
- enum key_operation op = KEY_OP_UNSET;
+ enum operation_type op;
if (get_key(rules->udev, &linepos, &key, &op, &value) != 0)
break;
if (strcasecmp(key, "ACTION") == 0) {
- if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+ if (op > OP_MATCH_MAX) {
err(rules->udev, "invalid ACTION operation\n");
goto invalid;
}
}
if (strcasecmp(key, "DEVPATH") == 0) {
- if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+ if (op > OP_MATCH_MAX) {
err(rules->udev, "invalid DEVPATH operation\n");
goto invalid;
}
}
if (strcasecmp(key, "KERNEL") == 0) {
- if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+ if (op > OP_MATCH_MAX) {
err(rules->udev, "invalid KERNEL operation\n");
goto invalid;
}
}
if (strcasecmp(key, "SUBSYSTEM") == 0) {
- if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+ if (op > OP_MATCH_MAX) {
err(rules->udev, "invalid SUBSYSTEM operation\n");
goto invalid;
}
}
if (strcasecmp(key, "DRIVER") == 0) {
- if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+ if (op > OP_MATCH_MAX) {
err(rules->udev, "invalid DRIVER operation\n");
goto invalid;
}
err(rules->udev, "error parsing ATTR attribute\n");
goto invalid;
}
- if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH) {
+ if (op < OP_MATCH_MAX) {
rule_add_token(&rule_tmp, TK_M_ATTR, op, value, attr);
} else {
rule_add_token(&rule_tmp, TK_A_ATTR, op, value, attr);
if (strcasecmp(key, "KERNELS") == 0 ||
strcasecmp(key, "ID") == 0) {
- if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+ if (op > OP_MATCH_MAX) {
err(rules->udev, "invalid KERNELS operation\n");
goto invalid;
}
if (strcasecmp(key, "SUBSYSTEMS") == 0 ||
strcasecmp(key, "BUS") == 0) {
- if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+ if (op > OP_MATCH_MAX) {
err(rules->udev, "invalid SUBSYSTEMS operation\n");
goto invalid;
}
}
if (strcasecmp(key, "DRIVERS") == 0) {
- if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+ if (op > OP_MATCH_MAX) {
err(rules->udev, "invalid DRIVERS operation\n");
goto invalid;
}
if (strncasecmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0 ||
strncasecmp(key, "SYSFS{", sizeof("SYSFS{")-1) == 0) {
- if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+ if (op > OP_MATCH_MAX) {
err(rules->udev, "invalid ATTRS operation\n");
goto invalid;
}
}
if (strncmp(attr, "PHYSDEV", 7) == 0)
physdev = 1;
- if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH) {
+ if (op < OP_MATCH_MAX) {
if (rule_add_token(&rule_tmp, TK_M_ENV, op, value, attr) != 0)
goto invalid;
} else {
}
if (strcasecmp(key, "RESULT") == 0) {
- if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+ if (op > OP_MATCH_MAX) {
err(rules->udev, "invalid RESULT operation\n");
goto invalid;
}
if (strncasecmp(key, "TEST", sizeof("TEST")-1) == 0) {
mode_t mode = 0;
- if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+ if (op > OP_MATCH_MAX) {
err(rules->udev, "invalid TEST operation\n");
goto invalid;
}
}
if (strncasecmp(key, "NAME", sizeof("NAME")-1) == 0) {
- if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH) {
+ if (op < OP_MATCH_MAX) {
rule_add_token(&rule_tmp, TK_M_NAME, op, value, NULL);
} else {
if (value[0] == '\0')
}
if (strcasecmp(key, "SYMLINK") == 0) {
- if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH)
- 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;
- continue;
- }
+ 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;
+ continue;
+ }
if (strcasecmp(key, "OWNER") == 0) {
uid_t uid;
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) {
- uid = util_lookup_user(rules->udev, value);
+ 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);
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) {
- gid = util_lookup_group(rules->udev, value);
+ 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);
/* init token array and string buffer */
rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token));
- if (rules->tokens != NULL)
- rules->token_max = PREALLOC_TOKEN;
+ if (rules->tokens == NULL)
+ return NULL;
+ rules->token_max = PREALLOC_TOKEN;
rules->buf = malloc(PREALLOC_STRBUF);
- if (rules->buf != NULL)
- rules->buf_max = PREALLOC_STRBUF;
+ if (rules->buf == NULL)
+ 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);
- /* offset 0 in the string buffer is always empty */
- add_string(rules, "");
if (udev_get_rules_path(udev) != NULL) {
/* custom rules location for testing */
end_token.type = TK_END;
add_token(rules, &end_token);
- /* shrink allocate buffers */
+ /* 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;
info(udev, "shrunk to %lu bytes tokens (%u * %zu bytes), %zu bytes buffer\n",
rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max);
- /* 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;
- }
- }
+ /* cleanup uid/gid cache */
+ free(rules->uids);
+ rules->uids = NULL;
+ rules->uids_cur = 0;
+ rules->uids_max = 0;
+ free(rules->gids);
+ rules->gids = NULL;
+ rules->gids_cur = 0;
+ rules->gids_max = 0;
+
dump_rules(rules);
return rules;
}
return;
free(rules->tokens);
free(rules->buf);
+ free(rules->uids);
+ free(rules->gids);
free(rules);
}
static int match_key(struct udev_rules *rules, struct token *token, const char *val)
{
- const char *key_name = token_str[token->type];
char *key_value = &rules->buf[token->key.value_off];
char *pos;
int match = 0;
if (val == NULL)
val = "";
- /* look for a matching string, parts are separated by '|' */
- if (strchr(key_value, '|') != NULL) {
- char value[UTIL_PATH_SIZE];
+ switch (token->key.glob) {
+ case GL_PLAIN:
+ match = (strcmp(key_value, val) == 0);
+ break;
+ case GL_GLOB:
+ match = (fnmatch(key_value, val, 0) == 0);
+ break;
+ case GL_SPLIT:
+ {
+ const char *split;
+ size_t len;
- util_strlcpy(value, &rules->buf[token->key.value_off], sizeof(value));
- key_value = value;
- while (key_value != NULL) {
- pos = strchr(key_value, '|');
- if (pos != NULL) {
- pos[0] = '\0';
- pos = &pos[1];
+ split = &rules->buf[token->key.value_off];
+ len = strlen(val);
+ while (1) {
+ const char *next;
+
+ next = strchr(split, '|');
+ if (next != NULL) {
+ size_t matchlen = (size_t)(next - split);
+
+ match = (matchlen == len && strncmp(split, val, matchlen) == 0);
+ if (match)
+ break;
+ } else {
+ match = (strcmp(split, val) == 0);
+ break;
+ }
+ split = &next[1];
}
- dbg(rules->udev, "match %s '%s' <-> '%s'\n", key_name, key_value, val);
- match = (fnmatch(key_value, val, 0) == 0);
- if (match)
- break;
- key_value = pos;
+ break;
}
- } else {
- match = (fnmatch(key_value, val, 0) == 0);
+ case GL_SPLIT_GLOB:
+ {
+ char value[UTIL_PATH_SIZE];
+
+ util_strlcpy(value, &rules->buf[token->key.value_off], sizeof(value));
+ key_value = value;
+ while (key_value != NULL) {
+ pos = strchr(key_value, '|');
+ if (pos != NULL) {
+ pos[0] = '\0';
+ pos = &pos[1];
+ }
+ 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;
+ key_value = pos;
+ }
+ break;
+ }
+ case GL_SOMETHING:
+ match = (val[0] != '\0');
+ break;
+ case GL_FORMAT:
+ case GL_UNSET:
+ return -1;
}
- if (match && (token->key.op == KEY_OP_MATCH)) {
- dbg(rules->udev, "%s is true (matching value)\n", key_name);
+ if (match && (token->key.op == OP_MATCH)) {
+ dbg(rules->udev, "%s is true (matching value)\n", token_str[token->type]);
return 0;
}
- if (!match && (token->key.op == KEY_OP_NOMATCH)) {
- dbg(rules->udev, "%s is true (non-matching value)\n", key_name);
+ if (!match && (token->key.op == OP_NOMATCH)) {
+ dbg(rules->udev, "%s is true (non-matching value)\n", token_str[token->type]);
return 0;
}
- dbg(rules->udev, "%s is not true\n", key_name);
+ dbg(rules->udev, "%s is not true\n", token_str[token->type]);
return -1;
}
char attr[UTIL_PATH_SIZE];
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] = "";
+ char value[UTIL_NAME_SIZE];
size_t len;
util_strlcpy(attr, key_name, sizeof(attr));
+ util_strlcpy(value, "", sizeof(value));
util_resolve_subsys_kernel(event->udev, attr, value, sizeof(value), 1);
if (value[0] == '\0') {
const char *val;
int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event)
{
- struct token *rule;
struct token *cur;
+ struct token *rule;
+ enum escape_type esc = ESCAPE_UNSET;
if (rules->tokens == NULL)
return -1;
/* loop through token list, match, run actions or forward to next rule */
cur = &rules->tokens[0];
+ rule = cur;
while (cur != NULL && cur->type != TK_END) {
- enum escape_type esc = ESCAPE_UNSET;
unsigned int idx;
dump_token(rules, cur);
rule = cur;
esc = ESCAPE_UNSET;
break;
- case TK_M_WAITFOR:
- {
- 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));
- found = (wait_for_file(event->dev, filename, 10) == 0);
- if (!found && (cur->key.op != KEY_OP_NOMATCH))
- goto nomatch;
- break;
- }
case TK_M_ACTION:
if (match_key(rules, cur, udev_device_get_action(event->dev)) != 0)
goto nomatch;
if (match_key(rules, cur, udev_device_get_driver(event->dev)) != 0)
goto nomatch;
break;
+ case TK_M_WAITFOR:
+ {
+ 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));
+ found = (wait_for_file(event->dev, filename, 10) == 0);
+ if (!found && (cur->key.op != OP_NOMATCH))
+ goto nomatch;
+ break;
+ }
case TK_M_ATTR:
if (match_attr(rules, event->dev, event, cur) != 0)
goto nomatch;
/* get whole sequence of parent matches */
next = cur;
- while (next->type < TK_PARENTS_MAX)
+ while (next->type < TK_M_PARENTS_MAX)
next++;
/* loop over parents */
info(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 == KEY_OP_NOMATCH)
+ if (match && cur->key.op == OP_NOMATCH)
goto nomatch;
- if (!match && cur->key.op == KEY_OP_MATCH)
+ if (!match && cur->key.op == OP_MATCH)
goto nomatch;
break;
}
char **envp;
char result[UTIL_PATH_SIZE];
+ 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));
envp = udev_device_get_properties_envp(event->dev);
if (util_run_program(event->udev, program, envp, result, sizeof(result), NULL) != 0) {
- event->program_result[0] = '\0';
- if (cur->key.op != KEY_OP_NOMATCH)
+ if (cur->key.op != OP_NOMATCH)
goto nomatch;
} else {
int count;
if (count > 0)
info(event->udev, "%i character(s) replaced\n" , count);
}
- util_strlcpy(event->program_result, result, sizeof(event->program_result));
- if (cur->key.op == KEY_OP_NOMATCH)
+ event->program_result = strdup(result);
+ dbg(event->udev, "storing result '%s'\n", event->program_result);
+ if (cur->key.op == OP_NOMATCH)
goto nomatch;
}
break;
util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
udev_event_apply_format(event, import, sizeof(import));
if (import_file_into_properties(event->dev, import) != 0)
- if (cur->key.op != KEY_OP_NOMATCH)
+ if (cur->key.op != OP_NOMATCH)
goto nomatch;
break;
}
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)
- if (cur->key.op != KEY_OP_NOMATCH)
+ if (cur->key.op != OP_NOMATCH)
goto nomatch;
break;
}
util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
udev_event_apply_format(event, import, sizeof(import));
if (import_parent_into_properties(event->dev, import) != 0)
- if (cur->key.op != KEY_OP_NOMATCH)
+ if (cur->key.op != OP_NOMATCH)
goto nomatch;
break;
}
if (event->owner_final)
break;
- if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+ 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));
if (event->group_final)
break;
- if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+ if (cur->key.op == OP_ASSIGN_FINAL)
event->group_final = 1;
- util_strlcpy(group, &rules->buf[cur->key.value_off], sizeof(group));
+ util_strlcpy(group, &rules->buf[cur->key.value_off], sizeof(group));
udev_event_apply_format(event, group, sizeof(group));
event->gid = util_lookup_group(event->udev, group);
break;
if (event->mode_final)
break;
- if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+ if (cur->key.op == OP_ASSIGN_FINAL)
event->mode_final = 1;
- util_strlcpy(mode, &rules->buf[cur->key.value_off], sizeof(mode));
+ util_strlcpy(mode, &rules->buf[cur->key.value_off], sizeof(mode));
udev_event_apply_format(event, mode, sizeof(mode));
event->mode = strtol(mode, &endptr, 8);
if (endptr[0] != '\0') {
case TK_A_OWNER_ID:
if (event->owner_final)
break;
- if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+ if (cur->key.op == OP_ASSIGN_FINAL)
event->owner_final = 1;
event->uid = cur->key.uid;
break;
case TK_A_GROUP_ID:
if (event->group_final)
break;
- if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+ if (cur->key.op == OP_ASSIGN_FINAL)
event->group_final = 1;
event->gid = cur->key.gid;
break;
case TK_A_MODE_ID:
if (event->mode_final)
break;
- if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+ if (cur->key.op == OP_ASSIGN_FINAL)
event->mode_final = 1;
event->mode = cur->key.mode;
break;
case TK_A_NAME:
{
const char *name = &rules->buf[cur->key.value_off];
+ char name_str[UTIL_PATH_SIZE];
int count;
if (event->name_final)
break;
- if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+ if (cur->key.op == OP_ASSIGN_FINAL)
event->name_final = 1;
if (name[0] == '\0') {
- event->name[0] = '\0';
- event->name_ignore = 1;
+ free(event->name);
+ event->name = NULL;
break;
}
- event->name_ignore = 0;
- util_strlcpy(event->name, name, sizeof(event->name));
- udev_event_apply_format(event, event->name, sizeof(event->name));
+ util_strlcpy(name_str, name, sizeof(name_str));
+ udev_event_apply_format(event, name_str, sizeof(name_str));
if (esc == ESCAPE_UNSET || esc == ESCAPE_REPLACE) {
- count = util_replace_chars(event->name, ALLOWED_CHARS_FILE);
+ count = util_replace_chars(name_str, ALLOWED_CHARS_FILE);
if (count > 0)
info(event->udev, "%i character(s) replaced\n", count);
+ free(event->name);
+ event->name = strdup(name_str);
}
break;
}
if (event->devlink_final)
break;
- if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+ if (major(udev_device_get_devnum(event->dev)) == 0)
+ break;
+ if (cur->key.op == OP_ASSIGN_FINAL)
event->devlink_final = 1;
- if (cur->key.op == KEY_OP_ASSIGN || cur->key.op == KEY_OP_ASSIGN_FINAL)
+ 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 */
{
struct udev_list_entry *list_entry;
- if (cur->key.op == KEY_OP_ASSIGN || cur->key.op == KEY_OP_ASSIGN_FINAL)
+ if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
udev_list_cleanup_entries(event->udev, &event->run_list);
list_entry = udev_list_entry_add(event->udev, &event->run_list,
&rules->buf[cur->key.value_off], NULL, 1, 0);
case TK_A_LAST_RULE:
break;
- case TK_PARENTS_MAX:
+ case TK_M_PARENTS_MAX:
+ case TK_M_MAX:
case TK_END:
- case TK_UNDEF:
+ case TK_UNSET:
err(rules->udev, "wrong type %u\n", cur->type);
goto nomatch;
}
~ianmdlvl / elogind.git / blobdiff