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add IMPORT{cmdline}

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This commit is contained in:
Kay Sievers 2010-05-31 01:13:03 +02:00
parent 1182b9470f
commit c4f6dcc4a5
2 changed files with 55 additions and 0 deletions
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48
udev/udev-rules.c
View File

@ -143,6 +143,7 @@ enum token_type {
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,
@ -276,6 +277,7 @@ static const char *token_str(enum token_type type)
[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",
@ -342,6 +344,7 @@ static void dump_token(struct udev_rules *rules, struct token *token)
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:
@ -1010,6 +1013,7 @@ static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type,
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:
@ -1402,6 +1406,9 @@ static int add_rule(struct udev_rules *rules, char *line,
} else if (attr != NULL && strstr(attr, "db")) {
dbg(rules->udev, "IMPORT will include db values\n");
rule_add_key(&rule_tmp, TK_M_IMPORT_DB, op, value, NULL);
} else if (attr != NULL && strstr(attr, "cmdline")) {
dbg(rules->udev, "IMPORT will include db values\n");
rule_add_key(&rule_tmp, TK_M_IMPORT_CMDLINE, op, value, NULL);
} else if (attr != NULL && strstr(attr, "parent")) {
dbg(rules->udev, "IMPORT will include the parent values\n");
rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL);
@ -2329,6 +2336,47 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
}
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[1];
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];

7
udev/udev.xml
View File

@ -437,6 +437,13 @@
by an earlier event.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>cmdline</option></term>
<listitem>
<para>Import a single property from the kernel commandline. For simple flags
the value of the property will be set to '1'.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>parent</option></term>
<listitem>