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authorJan Janssen <medhefgo@web.de>2014-12-02 18:49:30 +0100
committerLennart Poettering <lennart@poettering.net>2014-12-05 01:29:45 +0100
commitbaade8cc237c37bd8905d86ec6e9c7872d4abe03 (patch)
treeb32976b760d450aef3639ceb467f3058696f8881 /src/cryptsetup/cryptsetup-generator.c
parent6cd5b12aa5a62d6bf4afb78ec1a7787ff01b54ce (diff)
cryptsetup-generator: Add support for naming luks devices on kernel cmdline
Diffstat (limited to 'src/cryptsetup/cryptsetup-generator.c')
-rw-r--r--src/cryptsetup/cryptsetup-generator.c32
1 files changed, 26 insertions, 6 deletions
diff --git a/src/cryptsetup/cryptsetup-generator.c b/src/cryptsetup/cryptsetup-generator.c
index efbcb3afbc..3a866f36fc 100644
--- a/src/cryptsetup/cryptsetup-generator.c
+++ b/src/cryptsetup/cryptsetup-generator.c
@@ -37,6 +37,7 @@
typedef struct crypto_device {
char *uuid;
char *keyfile;
+ char *name;
char *options;
bool create;
} crypto_device;
@@ -266,6 +267,7 @@ static void free_arg_disks(void) {
while ((d = hashmap_steal_first(arg_disks))) {
free(d->uuid);
free(d->keyfile);
+ free(d->name);
free(d->options);
free(d);
}
@@ -286,7 +288,7 @@ static crypto_device *get_crypto_device(const char *uuid) {
return NULL;
d->create = false;
- d->keyfile = d->options = NULL;
+ d->keyfile = d->options = d->name = NULL;
d->uuid = strdup(uuid);
if (!d->uuid) {
@@ -362,6 +364,22 @@ static int parse_proc_cmdline_item(const char *key, const char *value) {
} else if (free_and_strdup(&arg_default_keyfile, value))
return log_oom();
+ } else if (STR_IN_SET(key, "luks.name", "rd.luks.name") && value) {
+
+ r = sscanf(value, "%m[0-9a-fA-F-]=%ms", &uuid, &uuid_value);
+ if (r == 2) {
+ d = get_crypto_device(uuid);
+ if (!d)
+ return log_oom();
+
+ d->create = arg_whitelist = true;
+
+ free(d->name);
+ d->name = uuid_value;
+ uuid_value = NULL;
+ } else
+ log_warning("Failed to parse luks name switch %s. Ignoring.", value);
+
}
return 0;
@@ -446,14 +464,16 @@ static int add_proc_cmdline_devices(void) {
HASHMAP_FOREACH(d, arg_disks, i) {
const char *options;
- _cleanup_free_ char *name = NULL, *device = NULL;
+ _cleanup_free_ char *device = NULL;
if (!d->create)
continue;
- name = strappend("luks-", d->uuid);
- if (!name)
- return log_oom();
+ if (!d->name) {
+ d->name = strappend("luks-", d->uuid);
+ if (!d->name)
+ return log_oom();
+ }
device = strappend("UUID=", d->uuid);
if (!device)
@@ -466,7 +486,7 @@ static int add_proc_cmdline_devices(void) {
else
options = "timeout=0";
- r = create_disk(name, device, d->keyfile ?: arg_default_keyfile, options);
+ r = create_disk(d->name, device, d->keyfile ?: arg_default_keyfile, options);
if (r < 0)
return r;
}