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-rw-r--r--src/basic/log.c4
-rw-r--r--src/basic/proc-cmdline.c11
-rw-r--r--src/basic/proc-cmdline.h4
-rw-r--r--src/core/main.c4
-rw-r--r--src/cryptsetup/cryptsetup-generator.c16
-rw-r--r--src/debug-generator/debug-generator.c4
-rw-r--r--src/fsck/fsck.c4
-rw-r--r--src/fstab-generator/fstab-generator.c4
-rw-r--r--src/gpt-auto-generator/gpt-auto-generator.c4
-rw-r--r--src/hibernate-resume/hibernate-resume-generator.c4
-rw-r--r--src/journal/journald-server.c135
-rw-r--r--src/modules-load/modules-load.c6
-rw-r--r--src/quotacheck/quotacheck.c4
-rw-r--r--src/test/test-proc-cmdline.c7
-rw-r--r--src/udev/udevd.c54
15 files changed, 120 insertions, 145 deletions
diff --git a/src/basic/log.c b/src/basic/log.c
index bd6c96c4f8..2ff70be255 100644
--- a/src/basic/log.c
+++ b/src/basic/log.c
@@ -967,7 +967,7 @@ int log_set_max_level_from_string(const char *e) {
return 0;
}
-static int parse_proc_cmdline_item(const char *key, const char *value) {
+static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
/*
* The systemd.log_xyz= settings are parsed by all tools, and
@@ -1012,7 +1012,7 @@ void log_parse_environment(void) {
/* Only try to read the command line in daemons.
We assume that anything that has a controlling
tty is user stuff. */
- (void) parse_proc_cmdline(parse_proc_cmdline_item);
+ (void) parse_proc_cmdline(parse_proc_cmdline_item, NULL, true);
e = secure_getenv("SYSTEMD_LOG_TARGET");
if (e && log_set_target_from_string(e) < 0)
diff --git a/src/basic/proc-cmdline.c b/src/basic/proc-cmdline.c
index 0430beadaa..8297a222b7 100644
--- a/src/basic/proc-cmdline.c
+++ b/src/basic/proc-cmdline.c
@@ -42,7 +42,9 @@ int proc_cmdline(char **ret) {
return read_one_line_file("/proc/cmdline", ret);
}
-int parse_proc_cmdline(int (*parse_item)(const char *key, const char *value)) {
+int parse_proc_cmdline(int (*parse_item)(const char *key, const char *value, void *data),
+ void *data,
+ bool strip_prefix) {
_cleanup_free_ char *line = NULL;
const char *p;
int r;
@@ -56,7 +58,7 @@ int parse_proc_cmdline(int (*parse_item)(const char *key, const char *value)) {
p = line;
for (;;) {
_cleanup_free_ char *word = NULL;
- char *value = NULL;
+ char *value = NULL, *unprefixed;
r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES|EXTRACT_RELAX);
if (r < 0)
@@ -66,14 +68,15 @@ int parse_proc_cmdline(int (*parse_item)(const char *key, const char *value)) {
/* Filter out arguments that are intended only for the
* initrd */
- if (!in_initrd() && startswith(word, "rd."))
+ unprefixed = startswith(word, "rd.");
+ if (unprefixed && !in_initrd())
continue;
value = strchr(word, '=');
if (value)
*(value++) = 0;
- r = parse_item(word, value);
+ r = parse_item(strip_prefix && unprefixed ? unprefixed : word, value, data);
if (r < 0)
return r;
}
diff --git a/src/basic/proc-cmdline.h b/src/basic/proc-cmdline.h
index 452642a2f5..6d6ee95c11 100644
--- a/src/basic/proc-cmdline.h
+++ b/src/basic/proc-cmdline.h
@@ -20,7 +20,9 @@
***/
int proc_cmdline(char **ret);
-int parse_proc_cmdline(int (*parse_word)(const char *key, const char *value));
+int parse_proc_cmdline(int (*parse_item)(const char *key, const char *value, void *data),
+ void *data,
+ bool strip_prefix);
int get_proc_cmdline_key(const char *parameter, char **value);
int shall_restore_state(void);
diff --git a/src/core/main.c b/src/core/main.c
index 498e289a83..94602611a7 100644
--- a/src/core/main.c
+++ b/src/core/main.c
@@ -308,7 +308,7 @@ static int set_machine_id(const char *m) {
return 0;
}
-static int parse_proc_cmdline_item(const char *key, const char *value) {
+static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
int r;
@@ -1569,7 +1569,7 @@ int main(int argc, char *argv[]) {
}
if (arg_system) {
- r = parse_proc_cmdline(parse_proc_cmdline_item);
+ r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, false);
if (r < 0)
log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
}
diff --git a/src/cryptsetup/cryptsetup-generator.c b/src/cryptsetup/cryptsetup-generator.c
index de0a3b6f9c..e2dc4327fe 100644
--- a/src/cryptsetup/cryptsetup-generator.c
+++ b/src/cryptsetup/cryptsetup-generator.c
@@ -277,12 +277,12 @@ static crypto_device *get_crypto_device(const char *uuid) {
return d;
}
-static int parse_proc_cmdline_item(const char *key, const char *value) {
+static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
int r;
crypto_device *d;
_cleanup_free_ char *uuid = NULL, *uuid_value = NULL;
- if (STR_IN_SET(key, "luks", "rd.luks") && value) {
+ if (streq(key, "luks") && value) {
r = parse_boolean(value);
if (r < 0)
@@ -290,7 +290,7 @@ static int parse_proc_cmdline_item(const char *key, const char *value) {
else
arg_enabled = r;
- } else if (STR_IN_SET(key, "luks.crypttab", "rd.luks.crypttab") && value) {
+ } else if (streq(key, "luks.crypttab") && value) {
r = parse_boolean(value);
if (r < 0)
@@ -298,7 +298,7 @@ static int parse_proc_cmdline_item(const char *key, const char *value) {
else
arg_read_crypttab = r;
- } else if (STR_IN_SET(key, "luks.uuid", "rd.luks.uuid") && value) {
+ } else if (streq(key, "luks.uuid") && value) {
d = get_crypto_device(startswith(value, "luks-") ? value+5 : value);
if (!d)
@@ -306,7 +306,7 @@ static int parse_proc_cmdline_item(const char *key, const char *value) {
d->create = arg_whitelist = true;
- } else if (STR_IN_SET(key, "luks.options", "rd.luks.options") && value) {
+ } else if (streq(key, "luks.options") && value) {
r = sscanf(value, "%m[0-9a-fA-F-]=%ms", &uuid, &uuid_value);
if (r == 2) {
@@ -320,7 +320,7 @@ static int parse_proc_cmdline_item(const char *key, const char *value) {
} else if (free_and_strdup(&arg_default_options, value) < 0)
return log_oom();
- } else if (STR_IN_SET(key, "luks.key", "rd.luks.key") && value) {
+ } else if (streq(key, "luks.key") && value) {
r = sscanf(value, "%m[0-9a-fA-F-]=%ms", &uuid, &uuid_value);
if (r == 2) {
@@ -334,7 +334,7 @@ static int parse_proc_cmdline_item(const char *key, const char *value) {
} else if (free_and_strdup(&arg_default_keyfile, value) < 0)
return log_oom();
- } else if (STR_IN_SET(key, "luks.name", "rd.luks.name") && value) {
+ } else if (streq(key, "luks.name") && value) {
r = sscanf(value, "%m[0-9a-fA-F-]=%ms", &uuid, &uuid_value);
if (r == 2) {
@@ -478,7 +478,7 @@ int main(int argc, char *argv[]) {
if (!arg_disks)
goto cleanup;
- r = parse_proc_cmdline(parse_proc_cmdline_item);
+ r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, true);
if (r < 0) {
log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
r = EXIT_FAILURE;
diff --git a/src/debug-generator/debug-generator.c b/src/debug-generator/debug-generator.c
index 7e80af78e7..7f11ec724d 100644
--- a/src/debug-generator/debug-generator.c
+++ b/src/debug-generator/debug-generator.c
@@ -33,7 +33,7 @@ static char **arg_mask = NULL;
static char **arg_wants = NULL;
static bool arg_debug_shell = false;
-static int parse_proc_cmdline_item(const char *key, const char *value) {
+static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
int r;
assert(key);
@@ -178,7 +178,7 @@ int main(int argc, char *argv[]) {
goto finish;
}
- r = parse_proc_cmdline(parse_proc_cmdline_item);
+ r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, false);
if (r < 0)
log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
diff --git a/src/fsck/fsck.c b/src/fsck/fsck.c
index d32e1d923e..be25c6a2b2 100644
--- a/src/fsck/fsck.c
+++ b/src/fsck/fsck.c
@@ -94,7 +94,7 @@ static void start_target(const char *target, const char *mode) {
log_error("Failed to start unit: %s", bus_error_message(&error, r));
}
-static int parse_proc_cmdline_item(const char *key, const char *value) {
+static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
int r;
assert(key);
@@ -293,7 +293,7 @@ int main(int argc, char *argv[]) {
umask(0022);
- r = parse_proc_cmdline(parse_proc_cmdline_item);
+ r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, true);
if (r < 0)
log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
diff --git a/src/fstab-generator/fstab-generator.c b/src/fstab-generator/fstab-generator.c
index 33af553d0d..e77bd71a52 100644
--- a/src/fstab-generator/fstab-generator.c
+++ b/src/fstab-generator/fstab-generator.c
@@ -590,7 +590,7 @@ static int add_sysroot_usr_mount(void) {
"/proc/cmdline");
}
-static int parse_proc_cmdline_item(const char *key, const char *value) {
+static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
int r;
/* root=, usr=, usrfstype= and roofstype= may occur more than once, the last
@@ -674,7 +674,7 @@ int main(int argc, char *argv[]) {
umask(0022);
- r = parse_proc_cmdline(parse_proc_cmdline_item);
+ r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, false);
if (r < 0)
log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
diff --git a/src/gpt-auto-generator/gpt-auto-generator.c b/src/gpt-auto-generator/gpt-auto-generator.c
index 6cc1aad705..a098b27a8e 100644
--- a/src/gpt-auto-generator/gpt-auto-generator.c
+++ b/src/gpt-auto-generator/gpt-auto-generator.c
@@ -907,7 +907,7 @@ fallback:
return 1;
}
-static int parse_proc_cmdline_item(const char *key, const char *value) {
+static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
int r;
assert(key);
@@ -1018,7 +1018,7 @@ int main(int argc, char *argv[]) {
return EXIT_SUCCESS;
}
- r = parse_proc_cmdline(parse_proc_cmdline_item);
+ r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, false);
if (r < 0)
log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
diff --git a/src/hibernate-resume/hibernate-resume-generator.c b/src/hibernate-resume/hibernate-resume-generator.c
index d7ee80d58f..17e670604e 100644
--- a/src/hibernate-resume/hibernate-resume-generator.c
+++ b/src/hibernate-resume/hibernate-resume-generator.c
@@ -33,7 +33,7 @@
static const char *arg_dest = "/tmp";
static char *arg_resume_dev = NULL;
-static int parse_proc_cmdline_item(const char *key, const char *value) {
+static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
if (streq(key, "resume") && value) {
free(arg_resume_dev);
@@ -88,7 +88,7 @@ int main(int argc, char *argv[]) {
if (!in_initrd())
return EXIT_SUCCESS;
- r = parse_proc_cmdline(parse_proc_cmdline_item);
+ r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, false);
if (r < 0)
log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
diff --git a/src/journal/journald-server.c b/src/journal/journald-server.c
index 44962bc5d6..908c7b8eeb 100644
--- a/src/journal/journald-server.c
+++ b/src/journal/journald-server.c
@@ -1526,85 +1526,68 @@ static int setup_signals(Server *s) {
return 0;
}
-static int server_parse_proc_cmdline(Server *s) {
- _cleanup_free_ char *line = NULL;
- const char *p;
+static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
+ Server *s = data;
int r;
- r = proc_cmdline(&line);
- if (r < 0) {
- log_warning_errno(r, "Failed to read /proc/cmdline, ignoring: %m");
- return 0;
- }
-
- p = line;
- for (;;) {
- _cleanup_free_ char *word = NULL;
+ assert(s);
- r = extract_first_word(&p, &word, NULL, 0);
+ if (streq(key, "systemd.journald.forward_to_syslog")) {
+ r = value ? parse_boolean(value) : true;
if (r < 0)
- return log_error_errno(r, "Failed to parse journald syntax \"%s\": %m", line);
-
- if (r == 0)
- break;
-
- if (startswith(word, "systemd.journald.forward_to_syslog=")) {
- r = parse_boolean(word + 35);
- if (r < 0)
- log_warning("Failed to parse forward to syslog switch %s. Ignoring.", word + 35);
- else
- s->forward_to_syslog = r;
- } else if (startswith(word, "systemd.journald.forward_to_kmsg=")) {
- r = parse_boolean(word + 33);
- if (r < 0)
- log_warning("Failed to parse forward to kmsg switch %s. Ignoring.", word + 33);
- else
- s->forward_to_kmsg = r;
- } else if (startswith(word, "systemd.journald.forward_to_console=")) {
- r = parse_boolean(word + 36);
- if (r < 0)
- log_warning("Failed to parse forward to console switch %s. Ignoring.", word + 36);
- else
- s->forward_to_console = r;
- } else if (startswith(word, "systemd.journald.forward_to_wall=")) {
- r = parse_boolean(word + 33);
- if (r < 0)
- log_warning("Failed to parse forward to wall switch %s. Ignoring.", word + 33);
- else
- s->forward_to_wall = r;
- } else if (startswith(word, "systemd.journald.max_level_console=")) {
- r = log_level_from_string(word + 35);
- if (r < 0)
- log_warning("Failed to parse max level console value %s. Ignoring.", word + 35);
- else
- s->max_level_console = r;
- } else if (startswith(word, "systemd.journald.max_level_store=")) {
- r = log_level_from_string(word + 33);
- if (r < 0)
- log_warning("Failed to parse max level store value %s. Ignoring.", word + 33);
- else
- s->max_level_store = r;
- } else if (startswith(word, "systemd.journald.max_level_syslog=")) {
- r = log_level_from_string(word + 34);
- if (r < 0)
- log_warning("Failed to parse max level syslog value %s. Ignoring.", word + 34);
- else
- s->max_level_syslog = r;
- } else if (startswith(word, "systemd.journald.max_level_kmsg=")) {
- r = log_level_from_string(word + 32);
- if (r < 0)
- log_warning("Failed to parse max level kmsg value %s. Ignoring.", word + 32);
- else
- s->max_level_kmsg = r;
- } else if (startswith(word, "systemd.journald.max_level_wall=")) {
- r = log_level_from_string(word + 32);
- if (r < 0)
- log_warning("Failed to parse max level wall value %s. Ignoring.", word + 32);
- else
- s->max_level_wall = r;
- } else if (startswith(word, "systemd.journald"))
- log_warning("Invalid systemd.journald parameter. Ignoring.");
- }
+ log_warning("Failed to parse forward to syslog switch \"%s\". Ignoring.", value);
+ else
+ s->forward_to_syslog = r;
+ } else if (streq(key, "systemd.journald.forward_to_kmsg")) {
+ r = value ? parse_boolean(value) : true;
+ if (r < 0)
+ log_warning("Failed to parse forward to kmsg switch \"%s\". Ignoring.", value);
+ else
+ s->forward_to_kmsg = r;
+ } else if (streq(key, "systemd.journald.forward_to_console")) {
+ r = value ? parse_boolean(value) : true;
+ if (r < 0)
+ log_warning("Failed to parse forward to console switch \"%s\". Ignoring.", value);
+ else
+ s->forward_to_console = r;
+ } else if (streq(key, "systemd.journald.forward_to_wall")) {
+ r = value ? parse_boolean(value) : true;
+ if (r < 0)
+ log_warning("Failed to parse forward to wall switch \"%s\". Ignoring.", value);
+ else
+ s->forward_to_wall = r;
+ } else if (streq(key, "systemd.journald.max_level_console") && value) {
+ r = log_level_from_string(value);
+ if (r < 0)
+ log_warning("Failed to parse max level console value \"%s\". Ignoring.", value);
+ else
+ s->max_level_console = r;
+ } else if (streq(key, "systemd.journald.max_level_store") && value) {
+ r = log_level_from_string(value);
+ if (r < 0)
+ log_warning("Failed to parse max level store value \"%s\". Ignoring.", value);
+ else
+ s->max_level_store = r;
+ } else if (streq(key, "systemd.journald.max_level_syslog") && value) {
+ r = log_level_from_string(value);
+ if (r < 0)
+ log_warning("Failed to parse max level syslog value \"%s\". Ignoring.", value);
+ else
+ s->max_level_syslog = r;
+ } else if (streq(key, "systemd.journald.max_level_kmsg") && value) {
+ r = log_level_from_string(value);
+ if (r < 0)
+ log_warning("Failed to parse max level kmsg value \"%s\". Ignoring.", value);
+ else
+ s->max_level_kmsg = r;
+ } else if (streq(key, "systemd.journald.max_level_wall") && value) {
+ r = log_level_from_string(value);
+ if (r < 0)
+ log_warning("Failed to parse max level wall value \"%s\". Ignoring.", value);
+ else
+ s->max_level_wall = r;
+ } else if (startswith(key, "systemd.journald"))
+ log_warning("Unknown journald kernel command line option \"%s\". Ignoring.", key);
/* do not warn about state here, since probably systemd already did */
return 0;
@@ -1915,7 +1898,7 @@ int server_init(Server *s) {
journal_reset_metrics(&s->runtime_storage.metrics);
server_parse_config_file(s);
- server_parse_proc_cmdline(s);
+ parse_proc_cmdline(parse_proc_cmdline_item, s, true);
if (!!s->rate_limit_interval ^ !!s->rate_limit_burst) {
log_debug("Setting both rate limit interval and burst from "USEC_FMT",%u to 0,0",
diff --git a/src/modules-load/modules-load.c b/src/modules-load/modules-load.c
index f75015d8c3..0901fea8dc 100644
--- a/src/modules-load/modules-load.c
+++ b/src/modules-load/modules-load.c
@@ -59,10 +59,10 @@ static int add_modules(const char *p) {
return 0;
}
-static int parse_proc_cmdline_item(const char *key, const char *value) {
+static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
int r;
- if (STR_IN_SET(key, "modules-load", "rd.modules-load") && value) {
+ if (streq(key, "modules-load") && value) {
r = add_modules(value);
if (r < 0)
return r;
@@ -226,7 +226,7 @@ int main(int argc, char *argv[]) {
umask(0022);
- r = parse_proc_cmdline(parse_proc_cmdline_item);
+ r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, true);
if (r < 0)
log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
diff --git a/src/quotacheck/quotacheck.c b/src/quotacheck/quotacheck.c
index 6d8c05f046..2714cde5c7 100644
--- a/src/quotacheck/quotacheck.c
+++ b/src/quotacheck/quotacheck.c
@@ -32,7 +32,7 @@
static bool arg_skip = false;
static bool arg_force = false;
-static int parse_proc_cmdline_item(const char *key, const char *value) {
+static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
if (streq(key, "quotacheck.mode") && value) {
@@ -88,7 +88,7 @@ int main(int argc, char *argv[]) {
umask(0022);
- r = parse_proc_cmdline(parse_proc_cmdline_item);
+ r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, false);
if (r < 0)
log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
diff --git a/src/test/test-proc-cmdline.c b/src/test/test-proc-cmdline.c
index 80ad5ed98b..4101678f19 100644
--- a/src/test/test-proc-cmdline.c
+++ b/src/test/test-proc-cmdline.c
@@ -25,15 +25,18 @@
#include "string-util.h"
#include "util.h"
-static int parse_item(const char *key, const char *value) {
+static int obj;
+
+static int parse_item(const char *key, const char *value, void *data) {
assert_se(key);
+ assert_se(data == &obj);
log_info("kernel cmdline option <%s> = <%s>", key, strna(value));
return 0;
}
static void test_parse_proc_cmdline(void) {
- assert_se(parse_proc_cmdline(parse_item) >= 0);
+ assert_se(parse_proc_cmdline(parse_item, &obj, true) >= 0);
}
static void test_runlevel_to_target(void) {
diff --git a/src/udev/udevd.c b/src/udev/udevd.c
index 535d317c27..badbab6205 100644
--- a/src/udev/udevd.c
+++ b/src/udev/udevd.c
@@ -1362,49 +1362,33 @@ static int listen_fds(int *rctrl, int *rnetlink) {
* udev.exec-delay=<number of seconds> delay execution of every executed program
* udev.event-timeout=<number of seconds> seconds to wait before terminating an event
*/
-static int parse_proc_cmdline_item(const char *key, const char *value) {
- const char *full_key = key;
- int r;
+static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
+ int r = 0;
assert(key);
if (!value)
return 0;
- if (startswith(key, "rd."))
- key += strlen("rd.");
-
- if (startswith(key, "udev."))
- key += strlen("udev.");
- else
- return 0;
-
- if (streq(key, "log-priority")) {
- int prio;
-
- prio = util_log_priority(value);
- if (prio < 0)
- goto invalid;
- log_set_max_level(prio);
- } else if (streq(key, "children-max")) {
+ if (streq(key, "udev.log-priority") && value) {
+ r = util_log_priority(value);
+ if (r >= 0)
+ log_set_max_level(r);
+ } else if (streq(key, "udev.event-timeout") && value) {
+ r = safe_atou64(value, &arg_event_timeout_usec);
+ if (r >= 0) {
+ arg_event_timeout_usec *= USEC_PER_SEC;
+ arg_event_timeout_warn_usec = (arg_event_timeout_usec / 3) ? : 1;
+ }
+ } else if (streq(key, "udev.children-max") && value)
r = safe_atou(value, &arg_children_max);
- if (r < 0)
- goto invalid;
- } else if (streq(key, "exec-delay")) {
+ else if (streq(key, "udev.exec-delay") && value)
r = safe_atoi(value, &arg_exec_delay);
- if (r < 0)
- goto invalid;
- } else if (streq(key, "event-timeout")) {
- r = safe_atou64(value, &arg_event_timeout_usec);
- if (r < 0)
- goto invalid;
- arg_event_timeout_usec *= USEC_PER_SEC;
- arg_event_timeout_warn_usec = (arg_event_timeout_usec / 3) ? : 1;
- }
+ else if (startswith(key, "udev."))
+ log_warning("Unknown udev kernel command line option \"%s\"", key);
- return 0;
-invalid:
- log_warning("invalid %s ignored: %s", full_key, value);
+ if (r < 0)
+ log_warning_errno(r, "Failed to parse \"%s=%s\", ignoring: %m", key, value);
return 0;
}
@@ -1665,7 +1649,7 @@ int main(int argc, char *argv[]) {
if (r <= 0)
goto exit;
- r = parse_proc_cmdline(parse_proc_cmdline_item);
+ r = parse_proc_cmdline(parse_proc_cmdline_item, NULL, true);
if (r < 0)
log_warning_errno(r, "failed to parse kernel command line, ignoring: %m");