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debug-generator: respect kernel parameters for default unit setting

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This commit is contained in:
Evgeny Vereshchagin 2015-11-03 14:45:56 +03:00
parent e2c9a13136
commit 7dcc56715d
1 changed files with 27 additions and 1 deletions
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28
src/debug-generator/debug-generator.c
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@ -23,11 +23,13 @@
#include "mkdir.h"
#include "parse-util.h"
#include "proc-cmdline.h"
#include "special.h"
#include "string-util.h"
#include "strv.h"
#include "unit-name.h"
#include "util.h"
static char *arg_default_unit = NULL;
static const char *arg_dest = "/tmp";
static char **arg_mask = NULL;
static char **arg_wants = NULL;
@ -80,6 +82,24 @@ static int parse_proc_cmdline_item(const char *key, const char *value) {
arg_debug_shell = r;
} else
arg_debug_shell = true;
} else if (streq(key, "systemd.unit")) {
if (!value)
log_error("Missing argument for systemd.unit= kernel command line parameter.");
else {
r = free_and_strdup(&arg_default_unit, value);
if (r < 0)
return log_error_errno(r, "Failed to set default unit %s: %m", value);
}
} else if (!value) {
const char *target;
target = runlevel_to_target(key);
if (target) {
r = free_and_strdup(&arg_default_unit, target);
if (r < 0)
return log_error_errno(r, "Failed to set default unit %s: %m", target);
}
}
return 0;
@ -118,7 +138,7 @@ static int generate_wants_symlinks(void) {
STRV_FOREACH(u, arg_wants) {
_cleanup_free_ char *p = NULL, *f = NULL;
p = strjoin(arg_dest, "/default.target.wants/", *u, NULL);
p = strjoin(arg_dest, "/", arg_default_unit, ".wants/", *u, NULL);
if (!p)
return log_oom();
@ -154,6 +174,12 @@ int main(int argc, char *argv[]) {
umask(0022);
r = free_and_strdup(&arg_default_unit, SPECIAL_DEFAULT_TARGET);
if (r < 0) {
log_error_errno(r, "Failed to set default unit %s: %m", SPECIAL_DEFAULT_TARGET);
goto finish;
}
r = parse_proc_cmdline(parse_proc_cmdline_item);
if (r < 0)
log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");