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Diffstat (limited to 'src/cryptsetup/cryptsetup-generator.c')
-rw-r--r--src/cryptsetup/cryptsetup-generator.c260
1 files changed, 128 insertions, 132 deletions
diff --git a/src/cryptsetup/cryptsetup-generator.c b/src/cryptsetup/cryptsetup-generator.c
index 46ad9b8d60..38c746b8bb 100644
--- a/src/cryptsetup/cryptsetup-generator.c
+++ b/src/cryptsetup/cryptsetup-generator.c
@@ -34,6 +34,11 @@ static const char *arg_dest = "/tmp";
static bool arg_enabled = true;
static bool arg_read_crypttab = true;
+static char **arg_disks;
+static char **arg_options;
+static char *arg_keyfile;
+
+
static bool has_option(const char *haystack, const char *needle) {
const char *f = haystack;
size_t l;
@@ -250,122 +255,94 @@ static int create_disk(
return 0;
}
-static int parse_proc_cmdline(
- char ***arg_proc_cmdline_disks,
- char ***arg_proc_cmdline_options,
- char **arg_proc_cmdline_keyfile) {
-
- _cleanup_free_ char *line = NULL;
- char *w = NULL, *state = NULL;
- size_t l;
+static int parse_proc_cmdline_word(const char *word) {
int r;
- r = proc_cmdline(&line);
- if (r < 0)
- log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
- if (r <= 0)
- return 0;
-
- FOREACH_WORD_QUOTED(w, l, line, state) {
- _cleanup_free_ char *word = NULL;
+ if (startswith(word, "luks=")) {
+ r = parse_boolean(word + 5);
+ if (r < 0)
+ log_warning("Failed to parse luks switch %s. Ignoring.", word + 5);
+ else
+ arg_enabled = r;
- word = strndup(w, l);
- if (!word)
- return log_oom();
+ } else if (startswith(word, "rd.luks=")) {
- if (startswith(word, "luks=")) {
- r = parse_boolean(word + 5);
+ if (in_initrd()) {
+ r = parse_boolean(word + 8);
if (r < 0)
- log_warning("Failed to parse luks switch %s. Ignoring.", word + 5);
+ log_warning("Failed to parse luks switch %s. Ignoring.", word + 8);
else
arg_enabled = r;
+ }
- } else if (startswith(word, "rd.luks=")) {
+ } else if (startswith(word, "luks.crypttab=")) {
+ r = parse_boolean(word + 14);
+ if (r < 0)
+ log_warning("Failed to parse luks crypttab switch %s. Ignoring.", word + 14);
+ else
+ arg_read_crypttab = r;
- if (in_initrd()) {
- r = parse_boolean(word + 8);
- if (r < 0)
- log_warning("Failed to parse luks switch %s. Ignoring.", word + 8);
- else
- arg_enabled = r;
- }
+ } else if (startswith(word, "rd.luks.crypttab=")) {
- } else if (startswith(word, "luks.crypttab=")) {
- r = parse_boolean(word + 14);
+ if (in_initrd()) {
+ r = parse_boolean(word + 17);
if (r < 0)
- log_warning("Failed to parse luks crypttab switch %s. Ignoring.", word + 14);
+ log_warning("Failed to parse luks crypttab switch %s. Ignoring.", word + 17);
else
arg_read_crypttab = r;
+ }
- } else if (startswith(word, "rd.luks.crypttab=")) {
+ } else if (startswith(word, "luks.uuid=")) {
+ if (strv_extend(&arg_disks, word + 10) < 0)
+ return log_oom();
- if (in_initrd()) {
- r = parse_boolean(word + 17);
- if (r < 0)
- log_warning("Failed to parse luks crypttab switch %s. Ignoring.", word + 17);
- else
- arg_read_crypttab = r;
- }
+ } else if (startswith(word, "rd.luks.uuid=")) {
- } else if (startswith(word, "luks.uuid=")) {
- if (strv_extend(arg_proc_cmdline_disks, word + 10) < 0)
+ if (in_initrd()) {
+ if (strv_extend(&arg_disks, word + 13) < 0)
return log_oom();
+ }
- } else if (startswith(word, "rd.luks.uuid=")) {
+ } else if (startswith(word, "luks.options=")) {
+ if (strv_extend(&arg_options, word + 13) < 0)
+ return log_oom();
- if (in_initrd()) {
- if (strv_extend(arg_proc_cmdline_disks, word + 13) < 0)
- return log_oom();
- }
+ } else if (startswith(word, "rd.luks.options=")) {
- } else if (startswith(word, "luks.options=")) {
- if (strv_extend(arg_proc_cmdline_options, word + 13) < 0)
+ if (in_initrd()) {
+ if (strv_extend(&arg_options, word + 16) < 0)
return log_oom();
+ }
- } else if (startswith(word, "rd.luks.options=")) {
+ } else if (startswith(word, "luks.key=")) {
+ free(arg_keyfile);
+ arg_keyfile = strdup(word + 9);
+ if (!arg_keyfile)
+ return log_oom();
- if (in_initrd()) {
- if (strv_extend(arg_proc_cmdline_options, word + 16) < 0)
- return log_oom();
- }
+ } else if (startswith(word, "rd.luks.key=")) {
- } else if (startswith(word, "luks.key=")) {
- if (*arg_proc_cmdline_keyfile)
- free(*arg_proc_cmdline_keyfile);
- *arg_proc_cmdline_keyfile = strdup(word + 9);
- if (!*arg_proc_cmdline_keyfile)
+ if (in_initrd()) {
+ free(arg_keyfile);
+ arg_keyfile = strdup(word + 12);
+ if (!arg_keyfile)
return log_oom();
+ }
- } else if (startswith(word, "rd.luks.key=")) {
-
- if (in_initrd()) {
- if (*arg_proc_cmdline_keyfile)
- free(*arg_proc_cmdline_keyfile);
- *arg_proc_cmdline_keyfile = strdup(word + 12);
- if (!*arg_proc_cmdline_keyfile)
- return log_oom();
- }
-
- } else if (startswith(word, "luks.") ||
- (in_initrd() && startswith(word, "rd.luks."))) {
+ } else if (startswith(word, "luks.") ||
+ (in_initrd() && startswith(word, "rd.luks."))) {
- log_warning("Unknown kernel switch %s. Ignoring.", word);
- }
+ log_warning("Unknown kernel switch %s. Ignoring.", word);
}
- strv_uniq(*arg_proc_cmdline_disks);
-
return 0;
}
int main(int argc, char *argv[]) {
- _cleanup_strv_free_ char **arg_proc_cmdline_disks_done = NULL;
- _cleanup_strv_free_ char **arg_proc_cmdline_disks = NULL;
- _cleanup_strv_free_ char **arg_proc_cmdline_options = NULL;
- _cleanup_free_ char *arg_proc_cmdline_keyfile = NULL;
+ _cleanup_strv_free_ char **disks_done = NULL;
_cleanup_fclose_ FILE *f = NULL;
unsigned n = 0;
- int r = EXIT_SUCCESS;
+ int r = EXIT_FAILURE, r2 = EXIT_FAILURE;
char **i;
if (argc > 1 && argc != 4) {
@@ -382,11 +359,15 @@ int main(int argc, char *argv[]) {
umask(0022);
- if (parse_proc_cmdline(&arg_proc_cmdline_disks, &arg_proc_cmdline_options, &arg_proc_cmdline_keyfile) < 0)
- return EXIT_FAILURE;
+ if (parse_proc_cmdline(parse_proc_cmdline_word) < 0)
+ goto cleanup;
- if (!arg_enabled)
- return EXIT_SUCCESS;
+ if (!arg_enabled) {
+ r = r2 = EXIT_SUCCESS;
+ goto cleanup;
+ }
+
+ strv_uniq(arg_disks);
if (arg_read_crypttab) {
struct stat st;
@@ -395,17 +376,14 @@ int main(int argc, char *argv[]) {
if (!f) {
if (errno == ENOENT)
r = EXIT_SUCCESS;
- else {
- r = EXIT_FAILURE;
+ else
log_error("Failed to open /etc/crypttab: %m");
- }
goto next;
}
if (fstat(fileno(f), &st) < 0) {
log_error("Failed to stat /etc/crypttab: %m");
- r = EXIT_FAILURE;
goto next;
}
@@ -433,36 +411,34 @@ int main(int argc, char *argv[]) {
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;
continue;
}
- if (arg_proc_cmdline_options) {
- /*
- If options are specified on the kernel commandline, let them override
- the ones from crypttab.
- */
- STRV_FOREACH(i, arg_proc_cmdline_options) {
- _cleanup_free_ char *proc_uuid = NULL, *proc_options = NULL;
- const char *p = *i;
-
- k = sscanf(p, "%m[0-9a-fA-F-]=%ms", &proc_uuid, &proc_options);
- if (k == 2 && streq(proc_uuid, device + 5)) {
- if (options)
- free(options);
- options = strdup(p);
- if (!proc_options)
- return log_oom();
+ /*
+ If options are specified on the kernel commandline, let them override
+ the ones from crypttab.
+ */
+ STRV_FOREACH(i, arg_options) {
+ _cleanup_free_ char *proc_uuid = NULL, *proc_options = NULL;
+ const char *p = *i;
+
+ k = sscanf(p, "%m[0-9a-fA-F-]=%ms", &proc_uuid, &proc_options);
+ if (k == 2 && streq(proc_uuid, device + 5)) {
+ free(options);
+ options = strdup(p);
+ if (!proc_options) {
+ log_oom();
+ goto cleanup;
}
}
}
- if (arg_proc_cmdline_disks) {
+ if (arg_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) {
+ STRV_FOREACH(i, arg_disks) {
_cleanup_free_ char *proc_device = NULL, *proc_name = NULL;
const char *p = *i;
@@ -472,26 +448,31 @@ int main(int argc, char *argv[]) {
proc_name = strappend("luks-", p);
proc_device = strappend("UUID=", p);
- if (!proc_name || !proc_device)
- return log_oom();
+ if (!proc_name || !proc_device) {
+ log_oom();
+ goto cleanup;
+ }
if (streq(proc_device, device) || streq(proc_name, name)) {
if (create_disk(name, device, password, options) < 0)
- r = EXIT_FAILURE;
+ goto cleanup;
- if (strv_extend(&arg_proc_cmdline_disks_done, p) < 0)
- return log_oom();
+ if (strv_extend(&disks_done, p) < 0) {
+ log_oom();
+ goto cleanup;
+ }
}
}
- } else {
- if (create_disk(name, device, password, options) < 0)
- r = EXIT_FAILURE;
- }
+ } else if (create_disk(name, device, password, options) < 0)
+ goto cleanup;
+
}
}
+ r = EXIT_SUCCESS;
+
next:
- STRV_FOREACH(i, arg_proc_cmdline_disks) {
+ STRV_FOREACH(i, arg_disks) {
/*
Generate units for those UUIDs, which were specified
on the kernel command line and not yet written.
@@ -503,22 +484,24 @@ next:
if (startswith(p, "luks-"))
p += 5;
- if (strv_contains(arg_proc_cmdline_disks_done, p))
+ if (strv_contains(disks_done, p))
continue;
name = strappend("luks-", p);
device = strappend("UUID=", p);
- if (!name || !device)
- return log_oom();
+ if (!name || !device) {
+ log_oom();
+ goto cleanup;
+ }
- if (arg_proc_cmdline_options) {
+ if (arg_options) {
/*
If options are specified on the kernel commandline, use them.
*/
char **j;
- STRV_FOREACH(j, arg_proc_cmdline_options) {
+ STRV_FOREACH(j, arg_options) {
_cleanup_free_ char *proc_uuid = NULL, *proc_options = NULL;
const char *s = *j;
int k;
@@ -529,29 +512,42 @@ next:
if (options)
free(options);
options = strdup(proc_options);
- if (!options)
- return log_oom();
+ if (!options) {
+ log_oom();
+ goto cleanup;
+ }
}
} else if (!options) {
/*
Fall back to options without a specified UUID
*/
options = strdup(s);
- if (!options)
- return log_oom();
+ if (!options) {
+ log_oom();
+ goto cleanup;
+ };
}
}
}
if (!options) {
options = strdup("timeout=0");
- if (!options)
- return log_oom();
+ if (!options) {
+ log_oom();
+ goto cleanup;
+ }
}
- if (create_disk(name, device, arg_proc_cmdline_keyfile, options) < 0)
- r = EXIT_FAILURE;
+ if (create_disk(name, device, arg_keyfile, options) < 0)
+ goto cleanup;
}
- return r;
+ r2 = EXIT_SUCCESS;
+
+cleanup:
+ strv_free(arg_disks);
+ strv_free(arg_options);
+ free(arg_keyfile);
+
+ return r != EXIT_SUCCESS ? r : r2;
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-11 20:54:56 +0000