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authorHarald Hoyer <harald@redhat.com>2013-03-01 11:33:14 +0100
committerHarald Hoyer <harald@redhat.com>2013-03-01 15:05:28 +0100
commite2cb60fa97e6a6483a98b685ff0d20c61da38c00 (patch)
tree32e703ea2d1a2a8852e5b7a9233a92bcbf8f29f2 /src
parent487060c2394b7703e59650ef332053645ffae2a3 (diff)
cryptsetup-generator: fix the kernel command line strategy for luks.uuid
If rd.luks.uuid or luks.uuid is specified on the kernel command, only generate units for these UUIDs. Additionally use the information in /etc/crypttab unless rd.luks.crypttab=0 or luks.crypttab=0 is specified.
Diffstat (limited to 'src')
-rw-r--r--src/cryptsetup/cryptsetup-generator.c145
1 files changed, 99 insertions, 46 deletions
diff --git a/src/cryptsetup/cryptsetup-generator.c b/src/cryptsetup/cryptsetup-generator.c
index f416675ba0..38a7cfa0b6 100644
--- a/src/cryptsetup/cryptsetup-generator.c
+++ b/src/cryptsetup/cryptsetup-generator.c
@@ -329,6 +329,8 @@ static int parse_proc_cmdline(void) {
free(word);
}
+ strv_uniq(arg_proc_cmdline_disks);
+
r = 0;
finish:
@@ -341,6 +343,7 @@ int main(int argc, char *argv[]) {
int r = EXIT_SUCCESS;
unsigned n = 0;
char **i;
+ char **arg_proc_cmdline_disks_done = NULL;
if (argc > 1 && argc != 4) {
log_error("This program takes three or no arguments.");
@@ -364,76 +367,125 @@ int main(int argc, char *argv[]) {
goto finish;
}
- STRV_FOREACH(i, arg_proc_cmdline_disks) {
- char *name, *device;
- const char *p = *i;
+ if (arg_read_crypttab) {
+ f = fopen("/etc/crypttab", "re");
- if (startswith(p, "luks-"))
- p += 5;
-
- name = strappend("luks-", p);
- device = strappend("UUID=", p);
+ if (!f) {
+ if (errno == ENOENT)
+ r = EXIT_SUCCESS;
+ else {
+ r = EXIT_FAILURE;
+ log_error("Failed to open /etc/crypttab: %m");
+ }
- if (!name || !device) {
- log_oom();
- r = EXIT_FAILURE;
- free(name);
- free(device);
goto finish;
}
- if (create_disk(name, device, NULL, NULL) < 0)
- r = EXIT_FAILURE;
+ for (;;) {
+ char line[LINE_MAX], *l;
+ char *name = NULL, *device = NULL, *password = NULL, *options = NULL;
+ int k;
- free(name);
- free(device);
- }
+ if (!fgets(line, sizeof(line), f))
+ break;
- if (!arg_read_crypttab)
- return r;
+ n++;
- f = fopen("/etc/crypttab", "re");
- if (!f) {
+ l = strstrip(line);
+ if (*l == '#' || *l == 0)
+ continue;
- if (errno == ENOENT)
- r = EXIT_SUCCESS;
- else {
- r = EXIT_FAILURE;
- log_error("Failed to open /etc/crypttab: %m");
- }
+ k = sscanf(l, "%ms %ms %ms %ms", &name, &device, &password, &options);
+ if (k < 2 || k > 4) {
+ log_error("Failed to parse /etc/crypttab:%u, ignoring.", n);
+ r = EXIT_FAILURE;
+ goto next;
+ }
- goto finish;
+ if (arg_proc_cmdline_disks) {
+ /*
+ If luks UUIDs are specified on the kernel command line, use them as a filter
+ for /etc/crypttab and only generate units for those.
+ */
+ STRV_FOREACH(i, arg_proc_cmdline_disks) {
+ char *proc_device, *proc_name;
+ const char *p = *i;
+
+ if (startswith(p, "luks-"))
+ p += 5;
+
+ proc_name = strappend("luks-", p);
+ proc_device = strappend("UUID=", p);
+
+ if (!proc_name || !proc_device) {
+ log_oom();
+ r = EXIT_FAILURE;
+ free(proc_name);
+ free(proc_device);
+ goto finish;
+ }
+ if (streq(proc_device, device) || streq(proc_name, name)) {
+ char **t;
+
+ if (create_disk(name, device, password, options) < 0)
+ r = EXIT_FAILURE;
+
+ t = strv_append(arg_proc_cmdline_disks_done, p);
+ if (!t) {
+ r = log_oom();
+ goto finish;
+ }
+ strv_free(arg_proc_cmdline_disks_done);
+ arg_proc_cmdline_disks_done = t;
+ }
+
+ free(proc_device);
+ free(proc_name);
+ }
+ } else {
+ if (create_disk(name, device, password, options) < 0)
+ r = EXIT_FAILURE;
+ }
+
+ next:
+ free(name);
+ free(device);
+ free(password);
+ free(options);
+ }
}
- for (;;) {
- char line[LINE_MAX], *l;
- char *name = NULL, *device = NULL, *password = NULL, *options = NULL;
- int k;
+ STRV_FOREACH(i, arg_proc_cmdline_disks) {
+ /*
+ Generate units for those UUIDs, which were specified
+ on the kernel command line and not yet written.
+ */
- if (!fgets(line, sizeof(line), f))
- break;
+ char *name, *device;
+ const char *p = *i;
- n++;
+ if (startswith(p, "luks-"))
+ p += 5;
- l = strstrip(line);
- if (*l == '#' || *l == 0)
+ if (strv_contains(arg_proc_cmdline_disks_done, p))
continue;
- k = sscanf(l, "%ms %ms %ms %ms", &name, &device, &password, &options);
- if (k < 2 || k > 4) {
- log_error("Failed to parse /etc/crypttab:%u, ignoring.", n);
+ name = strappend("luks-", p);
+ device = strappend("UUID=", p);
+
+ if (!name || !device) {
+ log_oom();
r = EXIT_FAILURE;
- goto next;
+ free(name);
+ free(device);
+ goto finish;
}
- if (create_disk(name, device, password, options) < 0)
+ if (create_disk(name, device, NULL, "timeout=0") < 0)
r = EXIT_FAILURE;
- next:
free(name);
free(device);
- free(password);
- free(options);
}
finish:
@@ -441,6 +493,7 @@ finish:
fclose(f);
strv_free(arg_proc_cmdline_disks);
+ strv_free(arg_proc_cmdline_disks_done);
return r;
}