IMPORT allow to import program returned keys into the env
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
This commit is contained in:
parent
be4bedd16b
commit
319c670016
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@ -259,13 +259,23 @@ BUS=="scsi", ID=="0:0:0:0", NAME="M%M-m%m-n%n-b%3b-s%3s{vendor}"
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EOF
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},
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{
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desc => "import of shellvalue file",
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desc => "import of shell-value file",
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subsys => "block",
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devpath => "/block/sda",
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exp_name => "subdir/sys/node" ,
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rules => <<EOF
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BUS=="scsi", IMPORT="test.all", NAME="subdir%E{SYSFSDIR}/node"
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KERNEL=="ttyUSB0", NAME="visor"
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EOF
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},
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{
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desc => "import of shell-value returned from program",
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subsys => "block",
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devpath => "/block/sda",
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exp_name => "node12345678",
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rules => <<EOF
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BUS=="scsi", IMPORT{exec}="/bin/echo -e \' TEST_KEY=12345678 \\n TEST_key2=98765 \'", NAME="node\$env{TEST_KEY}"
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KERNEL=="ttyUSB0", NAME="visor"
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EOF
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},
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{
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35
udev_rules.c
35
udev_rules.c
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@ -241,8 +241,8 @@ static int import_keys_into_env(const char *buf, size_t bufsize)
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linepos = line;
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if (get_key(&linepos, &variable, &value) == 0) {
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dbg("import %s=%s", variable, value);
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setenv(variable, value, 0);
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dbg("import '%s=%s'", variable, value);
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setenv(variable, value, 1);
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}
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}
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@ -264,11 +264,18 @@ static int import_file_into_env(const char *filename)
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return 0;
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}
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/** Finds the lowest positive N such that <name>N isn't present in
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* $(udevroot) either as a file or a symlink.
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*
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* @param name Name to check for
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* @return 0 if <name> didn't exist and N otherwise.
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static int import_program_into_env(struct udevice *udev, const char *program)
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{
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char result[1024];
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size_t reslen;
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if (execute_program(program, udev->subsystem, result, sizeof(result), &reslen) != 0)
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return -1;
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return import_keys_into_env(result, reslen);
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}
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/* finds the lowest positive N such that <name>N isn't present in the udevdb
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* if <name> doesn't exist, 0 is returned, N otherwise
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*/
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static int find_free_number(struct udevice *udev, const char *name)
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{
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@ -811,16 +818,24 @@ try_parent:
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/* import variables from file into environment */
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if (rule->import_operation != KEY_OP_UNSET) {
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char import[PATH_SIZE];
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int rc = -1;
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strlcpy(import, rule->import, sizeof(import));
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apply_format(udev, import, sizeof(import), class_dev, sysfs_device);
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dbg("check for " KEY_IMPORT " import='%s", import);
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if (import_file_into_env(import) != 0) {
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dbg("check for " KEY_IMPORT " import='%s'", import);
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if (rule->import_exec) {
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dbg("run executable file import='%s'", import);
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rc = import_program_into_env(udev, import);
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} else {
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dbg("import file import='%s'", import);
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rc = import_file_into_env(import);
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}
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if (rc) {
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dbg(KEY_IMPORT " failed");
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if (rule->import_operation != KEY_OP_NOMATCH)
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goto exit;
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} else
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dbg(KEY_IMPORT " file '%s' imported", rule->import);
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dbg(KEY_IMPORT " '%s' imported", rule->import);
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dbg(KEY_IMPORT " key is true");
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}
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@ -99,10 +99,11 @@ struct udev_rule {
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int sysfs_pair_count;
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struct key_pair env_pair[KEY_ENV_PAIRS_MAX];
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int env_pair_count;
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char modalias[NAME_SIZE];
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enum key_operation modalias_operation;
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char modalias[PATH_SIZE];
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enum key_operation import_operation;
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char import[PATH_SIZE];
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enum key_operation import_operation;
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int import_exec;
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char name[PATH_SIZE];
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enum key_operation name_operation;
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@ -375,7 +375,12 @@ static int rules_parse(const char *filename)
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continue;
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}
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if (strcasecmp(key, KEY_IMPORT) == 0) {
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if (strncasecmp(key, KEY_IMPORT, sizeof(KEY_IMPORT)-1) == 0) {
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attr = get_key_attribute(key + sizeof(KEY_IMPORT)-1);
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if (attr && strstr(attr, "exec")) {
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dbg(KEY_IMPORT" will be executed");
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rule.import_exec = 1;
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}
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strlcpy(rule.import, value, sizeof(rule.import));
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rule.import_operation = operation;
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valid = 1;
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@ -411,7 +416,6 @@ static int rules_parse(const char *filename)
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dbg("creation of partition nodes requested");
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rule.partitions = DEFAULT_PARTITIONS_COUNT;
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}
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/* FIXME: remove old style option and make OPTIONS= mandatory */
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if (strstr(attr, OPTION_IGNORE_REMOVE) != NULL) {
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dbg("remove event should be ignored");
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rule.ignore_remove = 1;
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