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[PATCH] simplify sysfs_pair handling

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kay.sievers@vrfy.org 2005-03-13 08:15:10 +01:00 committed by Greg KH
parent 38285d23d7
commit 79f651f4bd
3 changed files with 32 additions and 35 deletions
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19
udev_rules.c
View File

@ -463,16 +463,16 @@ attr_found:
return tmpattr;
}
static int compare_sysfs_attribute(struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device, struct sysfs_pair *pair)
static int compare_sysfs_attribute(struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device, struct key_pair *pair)
{
struct sysfs_attribute *tmpattr;
int i;
int len;
if ((pair == NULL) || (pair->file[0] == '\0') || (pair->value == '\0'))
if ((pair == NULL) || (pair->name[0] == '\0') || (pair->value == '\0'))
return -ENODEV;
tmpattr = find_sysfs_attribute(class_dev, sysfs_device, pair->file);
tmpattr = find_sysfs_attribute(class_dev, sysfs_device, pair->name);
if (tmpattr == NULL)
return -ENODEV;
@ -489,23 +489,24 @@ static int compare_sysfs_attribute(struct sysfs_class_device *class_dev, struct
}
dbg("compare attribute '%s' value '%s' with '%s'",
pair->file, tmpattr->value, pair->value);
pair->name, tmpattr->value, pair->value);
if (strcmp_pattern(pair->value, tmpattr->value) != 0)
return -ENODEV;
dbg("found matching attribute '%s' with value '%s'",
pair->file, pair->value);
pair->name, pair->value);
return 0;
}
static int match_sysfs_pairs(struct udev_rule *rule, struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
{
struct sysfs_pair *pair;
int i;
for (i = 0; i < MAX_SYSFS_PAIRS; ++i) {
for (i = 0; i < rule->sysfs_pair_count; i++) {
struct key_pair *pair;
pair = &rule->sysfs_pair[i];
if ((pair->file[0] == '\0') || (pair->value[0] == '\0'))
if ((pair->name[0] == '\0') || (pair->value[0] == '\0'))
break;
if (compare_sysfs_attribute(class_dev, sysfs_device, pair) != 0) {
dbg("sysfs pair #%u does not match", i);
@ -631,7 +632,7 @@ static int match_rule(struct udevice *udev, struct udev_rule *rule,
}
/* check for matching sysfs pairs */
if (rule->sysfs_pair[0].file[0] != '\0') {
if (rule->sysfs_pair[0].name[0] != '\0') {
dbg("check " KEY_SYSFS " pairs");
if (match_sysfs_pairs(rule, class_dev, sysfs_device) != 0) {
dbg(KEY_SYSFS " is not matching");

9
udev_rules.h
View File

@ -48,7 +48,7 @@
#define OPTION_IGNORE_REMOVE "ignore_remove"
#define OPTION_PARTITIONS "all_partitions"
#define MAX_SYSFS_PAIRS 5
#define KEY_SYSFS_PAIRS_MAX 5
#define RULEFILE_SUFFIX ".rules"
@ -60,8 +60,8 @@ enum key_operation {
KEY_OP_ASSIGN,
};
struct sysfs_pair {
char file[PATH_SIZE];
struct key_pair {
char name[NAME_SIZE];
char value[VALUE_SIZE];
enum key_operation operation;
};
@ -83,7 +83,8 @@ struct udev_rule {
enum key_operation program_operation;
char result[PATH_SIZE];
enum key_operation result_operation;
struct sysfs_pair sysfs_pair[MAX_SYSFS_PAIRS];
struct key_pair sysfs_pair[KEY_SYSFS_PAIRS_MAX];
int sysfs_pair_count;
char name[PATH_SIZE];
char symlink[PATH_SIZE];

39
udev_rules_parse.c
View File

@ -55,7 +55,7 @@ static int add_config_dev(struct udev_rule *rule)
"owner='%s', group='%s', mode=%#o, "
"all_partions=%u, ignore_remove=%u, ignore_device=%u, last_rule=%u",
rule->name, rule->symlink, rule->bus, rule->id,
rule->sysfs_pair[0].file, rule->sysfs_pair[0].value,
rule->sysfs_pair[0].name, rule->sysfs_pair[0].value,
rule->kernel, rule->program, rule->result, rule->owner, rule->group, rule->mode,
rule->partitions, rule->ignore_remove, rule->ignore_device, rule->last_rule);
@ -271,29 +271,24 @@ static int rules_parse(struct udevice *udev, const char *filename)
}
if (strncasecmp(key, KEY_SYSFS, sizeof(KEY_SYSFS)-1) == 0) {
struct sysfs_pair *pair = &rule.sysfs_pair[0];
int sysfs_pair_num = 0;
struct key_pair *pair;
/* find first unused pair */
while (pair->file[0] != '\0') {
++sysfs_pair_num;
if (sysfs_pair_num >= MAX_SYSFS_PAIRS) {
pair = NULL;
break;
}
++pair;
if (rule.sysfs_pair_count >= KEY_SYSFS_PAIRS_MAX) {
dbg("skip rule, to many " KEY_SYSFS " keys in a single rule");
goto error;
}
if (pair) {
attr = get_key_attribute(key + sizeof(KEY_SYSFS)-1);
if (attr == NULL) {
dbg("error parsing " KEY_SYSFS " attribute");
continue;
}
strlcpy(pair->file, attr, sizeof(pair->file));
strlcpy(pair->value, value, sizeof(pair->value));
pair->operation = operation;
valid = 1;
pair = &rule.sysfs_pair[rule.sysfs_pair_count];
rule.sysfs_pair_count++;
attr = get_key_attribute(key + sizeof(KEY_SYSFS)-1);
if (attr == NULL) {
dbg("error parsing " KEY_SYSFS " attribute");
continue;
}
strlcpy(pair->name, attr, sizeof(pair->name));
strlcpy(pair->value, value, sizeof(pair->value));
pair->operation = operation;
valid = 1;
continue;
}
@ -394,7 +389,7 @@ static int rules_parse(struct udevice *udev, const char *filename)
goto error;
/* simple plausibility checks for given keys */
if ((rule.sysfs_pair[0].file[0] == '\0') ^
if ((rule.sysfs_pair[0].name[0] == '\0') ^
(rule.sysfs_pair[0].value[0] == '\0')) {
info("inconsistency in " KEY_SYSFS " key");
goto error;