29132483780

Committed 10 Jul 2026 08:43PM UTC coverage: 72.912% (+0.2%) from 72.702%

Build # 29132483780

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github

Committed by

bluca

Commit Message

man: run forgotten 'update-man-rules'

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/src/debug-generator/debug-generator.c

/* SPDX-License-Identifier: LGPL-2.1-or-later */

#include <unistd.h>

#include "alloc-util.h"
#include "bitfield.h"
#include "creds-util.h"
#include "dlopen-note.h"
#include "dropin.h"
#include "errno-util.h"
#include "extract-word.h"
#include "fileio.h"
#include "log.h"
#include "generator.h"
#include "initrd-util.h"
#include "parse-util.h"
#include "path-util.h"
#include "proc-cmdline.h"
#include "recurse-dir.h"
#include "special.h"
#include "string-util.h"
#include "strv.h"
#include "unit-file.h"
#include "unit-name.h"

static const char *arg_dest = NULL;
static char *arg_default_unit = NULL;
static char **arg_mask = NULL;
static char **arg_wants = NULL;
static bool arg_debug_shell = false;
static char *arg_debug_tty = NULL;
static char *arg_default_debug_tty = NULL;
static uint32_t arg_breakpoints = 0;

STATIC_DESTRUCTOR_REGISTER(arg_default_unit, freep);
STATIC_DESTRUCTOR_REGISTER(arg_mask, strv_freep);
STATIC_DESTRUCTOR_REGISTER(arg_wants, strv_freep);
STATIC_DESTRUCTOR_REGISTER(arg_debug_tty, freep);
STATIC_DESTRUCTOR_REGISTER(arg_default_debug_tty, freep);

typedef enum BreakpointType {
        BREAKPOINT_PRE_UDEV,
        BREAKPOINT_PRE_BASIC,
        BREAKPOINT_PRE_SYSROOT_MOUNT,
        BREAKPOINT_PRE_SWITCH_ROOT,
        _BREAKPOINT_TYPE_MAX,
        _BREAKPOINT_TYPE_INVALID = -EINVAL,
} BreakpointType;

typedef enum BreakpointValidity {
        BREAKPOINT_DEFAULT   = 1 << 0,
        BREAKPOINT_IN_INITRD = 1 << 1,
        BREAKPOINT_ON_HOST   = 1 << 2,
} BreakpointValidity;

typedef struct BreakpointInfo {
        BreakpointType type;
        const char *name;
        const char *unit;
        BreakpointValidity validity;
} BreakpointInfo;

static const struct BreakpointInfo breakpoint_info_table[_BREAKPOINT_TYPE_MAX] = {
        { BREAKPOINT_PRE_UDEV,          "pre-udev",        "breakpoint-pre-udev.service",        BREAKPOINT_IN_INITRD | BREAKPOINT_ON_HOST },
        { BREAKPOINT_PRE_BASIC,         "pre-basic",       "breakpoint-pre-basic.service",       BREAKPOINT_IN_INITRD | BREAKPOINT_ON_HOST },
        { BREAKPOINT_PRE_SYSROOT_MOUNT, "pre-mount",       "breakpoint-pre-mount.service",       BREAKPOINT_IN_INITRD                      },
        { BREAKPOINT_PRE_SWITCH_ROOT,   "pre-switch-root", "breakpoint-pre-switch-root.service", BREAKPOINT_IN_INITRD | BREAKPOINT_DEFAULT },
};

static bool breakpoint_applies(const BreakpointInfo *info, int log_level) {
        assert(info);

        if (in_initrd() && !FLAGS_SET(info->validity, BREAKPOINT_IN_INITRD))
                log_full(log_level, "Breakpoint '%s' not valid in the initrd, ignoring.", info->name);
        else if (!in_initrd() && !FLAGS_SET(info->validity, BREAKPOINT_ON_HOST))
                log_full(log_level, "Breakpoint '%s' not valid on the host, ignoring.", info->name);
        else
                return true;

        return false;
}

static BreakpointType parse_breakpoint_from_string_one(const char *s) {
        assert(s);

        FOREACH_ELEMENT(i, breakpoint_info_table)
                if (streq(i->name, s))
                        return i->type;

        return _BREAKPOINT_TYPE_INVALID;
}

static int parse_breakpoint_from_string(const char *s, uint32_t *ret_breakpoints) {
        uint32_t breakpoints = 0;
        int r;

        assert(ret_breakpoints);

        /* Empty value? set default breakpoint */
        if (isempty(s)) {
                bool found_default = false;

                FOREACH_ELEMENT(i, breakpoint_info_table)
                        if (FLAGS_SET(i->validity, BREAKPOINT_DEFAULT) && breakpoint_applies(i, INT_MAX)) {
                                assert(i->type >= 0 && i->type < _BREAKPOINT_TYPE_MAX); /* silence coverity */
                                breakpoints |= UINT32_C(1) << i->type;
                                found_default = true;
                                break;
                        }

                if (!found_default)
                        log_warning("No default breakpoint defined %s, ignoring.",
                                    in_initrd() ? "in the initrd" : "on the host");
        } else
                for (;;) {
                        _cleanup_free_ char *t = NULL;
                        BreakpointType tt;

                        r = extract_first_word(&s, &t, ",", EXTRACT_DONT_COALESCE_SEPARATORS);
                        if (r < 0)
                                return r;
                        if (r == 0)
                                break;

                        tt = parse_breakpoint_from_string_one(t);
                        if (tt < 0) {
                                log_warning("Invalid breakpoint value '%s', ignoring.", t);
                                continue;
                        }

                        if (breakpoint_applies(&breakpoint_info_table[tt], LOG_WARNING))
                                breakpoints |= UINT32_C(1) << tt;
                }

        *ret_breakpoints = breakpoints;

        return 0;
}

static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
        int r;

        assert(key);

        if (streq(key, "systemd.mask")) {
                char *n;

                if (proc_cmdline_value_missing(key, value))
                        return 0;

                r = unit_name_mangle(value, UNIT_NAME_MANGLE_WARN, &n);
                if (r < 0)
                        return log_error_errno(r, "Failed to glob unit name: %m");

                if (strv_consume(&arg_mask, n) < 0)
                        return log_oom();

        } else if (streq(key, "systemd.wants")) {
                char *n;

                if (proc_cmdline_value_missing(key, value))
                        return 0;

                r = unit_name_mangle(value, UNIT_NAME_MANGLE_WARN, &n);
                if (r < 0)
                        return log_error_errno(r, "Failed to glob unit name: %m");

                if (strv_consume(&arg_wants, n) < 0)
                        return log_oom();

        } else if (proc_cmdline_key_streq(key, "systemd.debug_shell")) {

                r = value ? parse_boolean(value) : 1;
                arg_debug_shell = r != 0;
                if (r >= 0)
                        return 0;

                return free_and_strdup_warn(&arg_debug_tty, skip_dev_prefix(value));

        } else if (proc_cmdline_key_streq(key, "systemd.default_debug_tty")) {

                if (proc_cmdline_value_missing(key, value))
                        return 0;

                return free_and_strdup_warn(&arg_default_debug_tty, skip_dev_prefix(value));

        } else if (streq(key, "systemd.unit")) {

                if (proc_cmdline_value_missing(key, value))
                        return 0;

                return free_and_strdup_warn(&arg_default_unit, value);

        } else if (streq(key, "systemd.break")) {
                uint32_t breakpoints = 0;

                r = parse_breakpoint_from_string(value, &breakpoints);
                if (r < 0)
                        return log_warning_errno(r, "Failed to parse breakpoint value '%s': %m", value);

                arg_breakpoints |= breakpoints;

        } else if (!value) {
                const char *target;

                target = runlevel_to_target(key);
                if (target)
                        return free_and_strdup_warn(&arg_default_unit, target);
        }

        return 0;
}

static int generate_mask_symlinks(void) {
        int r = 0;

        STRV_FOREACH(u, arg_mask) {
                _cleanup_free_ char *p = NULL;

                p = path_join(arg_dest, *u);
                if (!p)
                        return log_oom();

                if (symlink("/dev/null", p) < 0)
                        RET_GATHER(r, log_error_errno(errno, "Failed to create mask symlink '%s': %m", p));
        }

        return r;
}

static int generate_wants_symlinks(void) {
        int r = 0;

        STRV_FOREACH(u, arg_wants) {
                _cleanup_free_ char *f = NULL;
                const char *target;

                /* This should match what do_queue_default_job() in core/main.c does. */
                if (arg_default_unit)
                        target = arg_default_unit;
                else if (in_initrd())
                        target = SPECIAL_INITRD_TARGET;
                else
                        target = SPECIAL_DEFAULT_TARGET;

                f = path_join(SYSTEM_DATA_UNIT_DIR, *u);
                if (!f)
                        return log_oom();

                RET_GATHER(r, generator_add_symlink(arg_dest, target, "wants", f));
        }

        return r;
}

static int install_debug_shell_dropin(void) {
        const char *tty = arg_debug_tty ?: arg_default_debug_tty;
        int r;

        if (!tty || path_equal(tty, skip_dev_prefix(DEBUGTTY)))
                return 0;

        r = write_drop_in_format(arg_dest, "debug-shell.service", 50, "tty",
                                 "# Automatically generated by systemd-debug-generator\n\n"
                                 "[Unit]\n"
                                 "Description=Early root shell on /dev/%s FOR DEBUGGING ONLY\n"
                                 "ConditionPathExists=\n"
                                 "\n[Service]\n"
                                 "TTYPath=/dev/%s\n",
                                 tty, tty);
        if (r < 0)
                return log_warning_errno(r, "Failed to write drop-in for debug-shell.service: %m");

        return 1;
}

static int process_unit_credentials(const char *credentials_dir) {
        _cleanup_free_ DirectoryEntries *des = NULL;
        int r;

        assert(credentials_dir);

        r = readdir_all_at(AT_FDCWD, credentials_dir, RECURSE_DIR_SORT|RECURSE_DIR_IGNORE_DOT|RECURSE_DIR_MUST_BE_REGULAR, &des);
        if (r < 0)
                return log_error_errno(r, "Failed to enumerate credentials from credentials directory '%s': %m", credentials_dir);

        FOREACH_ARRAY(i, des->entries, des->n_entries) {
                struct dirent *de = *i;
                const char *unit, *dropin;

                unit = startswith(de->d_name, "systemd.extra-unit.");
                dropin = startswith(de->d_name, "systemd.unit-dropin.");

                if (!unit && !dropin)
                        continue;

                _cleanup_free_ char *d = NULL;

                r = read_credential_with_decryption(de->d_name, (void**) &d, NULL);
                if (r < 0) {
                        log_warning_errno(r, "Failed to read credential '%s', ignoring: %m", de->d_name);
                        continue;
                }

                if (unit) {
                        _cleanup_free_ char *p = NULL;

                        if (!unit_name_is_valid(unit, UNIT_NAME_ANY)) {
                                log_warning("Invalid unit name '%s' in credential '%s', ignoring.",
                                            unit, de->d_name);
                                continue;
                        }

                        p = path_join(arg_dest, unit);
                        if (!p)
                                return log_oom();

                        r = write_string_file(p, d, WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_ATOMIC|WRITE_STRING_FILE_MKDIR_0755|WRITE_STRING_FILE_LABEL);
                        if (r < 0) {
                                log_warning_errno(r, "Failed to write unit file '%s' from credential '%s', ignoring: %m",
                                                  unit, de->d_name);
                                continue;
                        }

                        log_debug("Wrote unit file '%s' from credential '%s'", unit, de->d_name);

                } else if (dropin) {
                        _cleanup_free_ char *dropin_unit = NULL;
                        const char *tilde, *dropin_name;

                        tilde = strchrnul(dropin, '~');
                        dropin_unit = strndup(dropin, tilde - dropin);
                        if (!dropin_unit)
                                return log_oom();

                        if (!unit_name_is_valid(dropin_unit, UNIT_NAME_ANY)) {
                                log_warning("Invalid unit name '%s' in credential '%s', ignoring.",
                                            dropin_unit, de->d_name);
                                continue;
                        }

                        dropin_name = isempty(tilde) ? "50-credential" : tilde + 1;
                        if (isempty(dropin_name)) {
                                log_warning("Empty drop-in name for unit '%s' in credential '%s', ignoring.",
                                            dropin_unit, de->d_name);
                                continue;
                        }

                        r = write_drop_in(arg_dest, dropin_unit, /* level= */ UINT_MAX, dropin_name, d);
                        if (r < 0) {
                                log_warning_errno(r, "Failed to write drop-in '%s' for unit '%s' from credential '%s', ignoring: %m",
                                                  dropin_name, dropin_unit, de->d_name);
                                continue;
                        }

                        log_debug("Wrote drop-in '%s' for unit '%s' from credential '%s'", dropin_name, dropin_unit, de->d_name);
                } else
                        assert_not_reached();
        }

        return 0;
}

static int run(const char *dest, const char *dest_early, const char *dest_late) {
        const char *credentials_dir;
        int r;

        LIBCRYPTO_NOTE(suggested);
        TPM2_NOTE(suggested);

        assert_se(arg_dest = dest_early);

        r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_RD_STRICT | PROC_CMDLINE_STRIP_RD_PREFIX);
        if (r < 0)
                log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");

        if (arg_debug_shell) {
                if (strv_extend(&arg_wants, "debug-shell.service") < 0)
                        return log_oom();

                RET_GATHER(r, install_debug_shell_dropin());
        }

        BIT_FOREACH(i, arg_breakpoints)
                if (strv_extend(&arg_wants, breakpoint_info_table[i].unit) < 0)
                        return log_oom();

        if (get_credentials_dir(&credentials_dir) >= 0)
                RET_GATHER(r, process_unit_credentials(credentials_dir));

        if (get_encrypted_credentials_dir(&credentials_dir) >= 0)
                RET_GATHER(r, process_unit_credentials(credentials_dir));

        RET_GATHER(r, generate_mask_symlinks());
        RET_GATHER(r, generate_wants_symlinks());

        return r;
}

DEFINE_MAIN_GENERATOR_FUNCTION(run);

1	/* SPDX-License-Identifier: LGPL-2.1-or-later */
2
3	#include <unistd.h>
4
5	#include "alloc-util.h"
6	#include "bitfield.h"
7	#include "creds-util.h"
8	#include "dlopen-note.h"
9	#include "dropin.h"
10	#include "errno-util.h"
11	#include "extract-word.h"
12	#include "fileio.h"
13	#include "log.h"
14	#include "generator.h"
15	#include "initrd-util.h"
16	#include "parse-util.h"
17	#include "path-util.h"
18	#include "proc-cmdline.h"
19	#include "recurse-dir.h"
20	#include "special.h"
21	#include "string-util.h"
22	#include "strv.h"
23	#include "unit-file.h"
24	#include "unit-name.h"
25
26	static const char *arg_dest = NULL;
27	static char *arg_default_unit = NULL;
28	static char **arg_mask = NULL;
29	static char **arg_wants = NULL;
30	static bool arg_debug_shell = false;
31	static char *arg_debug_tty = NULL;
32	static char *arg_default_debug_tty = NULL;
33	static uint32_t arg_breakpoints = 0;
34
35	STATIC_DESTRUCTOR_REGISTER(arg_default_unit, freep);	20✔
36	STATIC_DESTRUCTOR_REGISTER(arg_mask, strv_freep);	20✔
37	STATIC_DESTRUCTOR_REGISTER(arg_wants, strv_freep);	20✔
38	STATIC_DESTRUCTOR_REGISTER(arg_debug_tty, freep);	20✔
39	STATIC_DESTRUCTOR_REGISTER(arg_default_debug_tty, freep);	20✔
40
41	typedef enum BreakpointType {
42	BREAKPOINT_PRE_UDEV,
43	BREAKPOINT_PRE_BASIC,
44	BREAKPOINT_PRE_SYSROOT_MOUNT,
45	BREAKPOINT_PRE_SWITCH_ROOT,
46	_BREAKPOINT_TYPE_MAX,
47	_BREAKPOINT_TYPE_INVALID = -EINVAL,
48	} BreakpointType;
49
50	typedef enum BreakpointValidity {
51	BREAKPOINT_DEFAULT = 1 << 0,
52	BREAKPOINT_IN_INITRD = 1 << 1,
53	BREAKPOINT_ON_HOST = 1 << 2,
54	} BreakpointValidity;
55
56	typedef struct BreakpointInfo {
57	BreakpointType type;
58	const char *name;
59	const char *unit;
60	BreakpointValidity validity;
61	} BreakpointInfo;
62
63	static const struct BreakpointInfo breakpoint_info_table[_BREAKPOINT_TYPE_MAX] = {
64	{ BREAKPOINT_PRE_UDEV, "pre-udev", "breakpoint-pre-udev.service", BREAKPOINT_IN_INITRD \| BREAKPOINT_ON_HOST },
65	{ BREAKPOINT_PRE_BASIC, "pre-basic", "breakpoint-pre-basic.service", BREAKPOINT_IN_INITRD \| BREAKPOINT_ON_HOST },
66	{ BREAKPOINT_PRE_SYSROOT_MOUNT, "pre-mount", "breakpoint-pre-mount.service", BREAKPOINT_IN_INITRD },
67	{ BREAKPOINT_PRE_SWITCH_ROOT, "pre-switch-root", "breakpoint-pre-switch-root.service", BREAKPOINT_IN_INITRD \| BREAKPOINT_DEFAULT },
68	};
69
70	static bool breakpoint_applies(const BreakpointInfo *info, int log_level) {	66✔
71	assert(info);	66✔
72
73	if (in_initrd() && !FLAGS_SET(info->validity, BREAKPOINT_IN_INITRD))	66✔
74	log_full(log_level, "Breakpoint '%s' not valid in the initrd, ignoring.", info->name);	×
75	else if (!in_initrd() && !FLAGS_SET(info->validity, BREAKPOINT_ON_HOST))	66✔
76	log_full(log_level, "Breakpoint '%s' not valid on the host, ignoring.", info->name);	22✔
77	else
78	return true;
79
80	return false;
81	}
82
83	static BreakpointType parse_breakpoint_from_string_one(const char *s) {	52✔
84	assert(s);	52✔
85
86	FOREACH_ELEMENT(i, breakpoint_info_table)	130✔
87	if (streq(i->name, s))	130✔
88	return i->type;	52✔
89
90	return _BREAKPOINT_TYPE_INVALID;
91	}
92
93	static int parse_breakpoint_from_string(const char s, uint32_t ret_breakpoints) {	54✔
94	uint32_t breakpoints = 0;	54✔
95	int r;	54✔
96
97	assert(ret_breakpoints);	54✔
98
99	/* Empty value? set default breakpoint */
100	if (isempty(s)) {	94✔
101	bool found_default = false;	63✔
102
103	FOREACH_ELEMENT(i, breakpoint_info_table)	63✔
104	if (FLAGS_SET(i->validity, BREAKPOINT_DEFAULT) && breakpoint_applies(i, INT_MAX)) {	56✔
105	assert(i->type >= 0 && i->type < _BREAKPOINT_TYPE_MAX); /* silence coverity */	7✔
106	breakpoints \|= UINT32_C(1) << i->type;	7✔
107	found_default = true;	7✔
108	break;	7✔
109	}
110
111	if (!found_default)	7✔
112	log_warning("No default breakpoint defined %s, ignoring.",	14✔
113	in_initrd() ? "in the initrd" : "on the host");
114	} else
115	for (;;) {	92✔
116	_cleanup_free_ char *t = NULL;	92✔
117	BreakpointType tt;	92✔
118
119	r = extract_first_word(&s, &t, ",", EXTRACT_DONT_COALESCE_SEPARATORS);	92✔
120	if (r < 0)	92✔
121	return r;	×
122	if (r == 0)	92✔
123	break;
124
125	tt = parse_breakpoint_from_string_one(t);	52✔
126	if (tt < 0) {	52✔
127	log_warning("Invalid breakpoint value '%s', ignoring.", t);	×
128	continue;	×
129	}
130
131	if (breakpoint_applies(&breakpoint_info_table[tt], LOG_WARNING))	52✔
132	breakpoints \|= UINT32_C(1) << tt;	37✔
133	}
134
135	*ret_breakpoints = breakpoints;	54✔
136
137	return 0;	54✔
138	}
139
140	static int parse_proc_cmdline_item(const char key, const char value, void *data) {	205✔
141	int r;	205✔
142
143	assert(key);	205✔
144
145	if (streq(key, "systemd.mask")) {	205✔
146	char *n;	42✔
147
148	if (proc_cmdline_value_missing(key, value))	42✔
149	return 0;	×
150
151	r = unit_name_mangle(value, UNIT_NAME_MANGLE_WARN, &n);	42✔
152	if (r < 0)	42✔
153	return log_error_errno(r, "Failed to glob unit name: %m");	×
154
155	if (strv_consume(&arg_mask, n) < 0)	42✔
156	return log_oom();	×
157
158	} else if (streq(key, "systemd.wants")) {	163✔
159	char *n;	42✔
160
161	if (proc_cmdline_value_missing(key, value))	42✔
162	return 0;	×
163
164	r = unit_name_mangle(value, UNIT_NAME_MANGLE_WARN, &n);	42✔
165	if (r < 0)	42✔
166	return log_error_errno(r, "Failed to glob unit name: %m");	×
167
168	if (strv_consume(&arg_wants, n) < 0)	42✔
169	return log_oom();	×
170
171	} else if (proc_cmdline_key_streq(key, "systemd.debug_shell")) {	121✔
172
173	r = value ? parse_boolean(value) : 1;	35✔
174	arg_debug_shell = r != 0;	35✔
175	if (r >= 0)	35✔
176	return 0;
177
178	return free_and_strdup_warn(&arg_debug_tty, skip_dev_prefix(value));	9✔
179
180	} else if (proc_cmdline_key_streq(key, "systemd.default_debug_tty")) {	86✔
181
182	if (proc_cmdline_value_missing(key, value))	8✔
183	return 0;
184
185	return free_and_strdup_warn(&arg_default_debug_tty, skip_dev_prefix(value));	8✔
186
187	} else if (streq(key, "systemd.unit")) {	78✔
188
189	if (proc_cmdline_value_missing(key, value))	2✔
190	return 0;
191
192	return free_and_strdup_warn(&arg_default_unit, value);	2✔
193
194	} else if (streq(key, "systemd.break")) {	76✔
195	uint32_t breakpoints = 0;	54✔
196
197	r = parse_breakpoint_from_string(value, &breakpoints);	54✔
198	if (r < 0)	54✔
199	return log_warning_errno(r, "Failed to parse breakpoint value '%s': %m", value);	×
200
201	arg_breakpoints \|= breakpoints;	54✔
202
203	} else if (!value) {	22✔
204	const char *target;	11✔
205
206	target = runlevel_to_target(key);	11✔
207	if (target)	11✔
208	return free_and_strdup_warn(&arg_default_unit, target);	×
209	}
210
211	return 0;
212	}
213
214	static int generate_mask_symlinks(void) {	20✔
215	int r = 0;	20✔
216
217	STRV_FOREACH(u, arg_mask) {	62✔
218	_cleanup_free_ char *p = NULL;	42✔
219
220	p = path_join(arg_dest, *u);	42✔
221	if (!p)	42✔
222	return log_oom();	×
223
224	if (symlink("/dev/null", p) < 0)	42✔
225	RET_GATHER(r, log_error_errno(errno, "Failed to create mask symlink '%s': %m", p));	×
226	}
227
228	return r;
229	}
230
231	static int generate_wants_symlinks(void) {	20✔
232	int r = 0;	20✔
233
234	STRV_FOREACH(u, arg_wants) {	109✔
235	_cleanup_free_ char *f = NULL;	89✔
236	const char *target;	89✔
237
238	/* This should match what do_queue_default_job() in core/main.c does. */
239	if (arg_default_unit)	89✔
240	target = arg_default_unit;
241	else if (in_initrd())	77✔
242	target = SPECIAL_INITRD_TARGET;
243	else
244	target = SPECIAL_DEFAULT_TARGET;	44✔
245
246	f = path_join(SYSTEM_DATA_UNIT_DIR, *u);	89✔
247	if (!f)	89✔
248	return log_oom();	×
249
250	RET_GATHER(r, generator_add_symlink(arg_dest, target, "wants", f));	89✔
251	}
252
253	return r;
254	}
255
256	static int install_debug_shell_dropin(void) {	18✔
257	const char *tty = arg_debug_tty ?: arg_default_debug_tty;	18✔
258	int r;	9✔
259
260	if (!tty \|\| path_equal(tty, skip_dev_prefix(DEBUGTTY)))	18✔
261	return 0;
262
263	r = write_drop_in_format(arg_dest, "debug-shell.service", 50, "tty",	9✔
264	"# Automatically generated by systemd-debug-generator\n\n"
265	"[Unit]\n"
266	"Description=Early root shell on /dev/%s FOR DEBUGGING ONLY\n"
267	"ConditionPathExists=\n"
268	"\n[Service]\n"
269	"TTYPath=/dev/%s\n",
270	tty, tty);
271	if (r < 0)	9✔
272	return log_warning_errno(r, "Failed to write drop-in for debug-shell.service: %m");	×
273
274	return 1;
275	}
276
277	static int process_unit_credentials(const char *credentials_dir) {	×
278	_cleanup_free_ DirectoryEntries *des = NULL;	×
279	int r;	×
280
281	assert(credentials_dir);	×
282
283	r = readdir_all_at(AT_FDCWD, credentials_dir, RECURSE_DIR_SORT\|RECURSE_DIR_IGNORE_DOT\|RECURSE_DIR_MUST_BE_REGULAR, &des);	×
284	if (r < 0)	×
285	return log_error_errno(r, "Failed to enumerate credentials from credentials directory '%s': %m", credentials_dir);	×
286
287	FOREACH_ARRAY(i, des->entries, des->n_entries) {	×
288	struct dirent de = i;	×
289	const char unit, dropin;	×
290
291	unit = startswith(de->d_name, "systemd.extra-unit.");	×
292	dropin = startswith(de->d_name, "systemd.unit-dropin.");	×
293
294	if (!unit && !dropin)	×
295	continue;	×
296
297	_cleanup_free_ char *d = NULL;	×
298
299	r = read_credential_with_decryption(de->d_name, (void**) &d, NULL);	×
300	if (r < 0) {	×
301	log_warning_errno(r, "Failed to read credential '%s', ignoring: %m", de->d_name);	×
302	continue;	×
303	}
304
305	if (unit) {	×
306	_cleanup_free_ char *p = NULL;	×
307
308	if (!unit_name_is_valid(unit, UNIT_NAME_ANY)) {	×
309	log_warning("Invalid unit name '%s' in credential '%s', ignoring.",	×
310	unit, de->d_name);
311	continue;	×
312	}
313
314	p = path_join(arg_dest, unit);	×
315	if (!p)	×
316	return log_oom();	×
317
318	r = write_string_file(p, d, WRITE_STRING_FILE_CREATE\|WRITE_STRING_FILE_ATOMIC\|WRITE_STRING_FILE_MKDIR_0755\|WRITE_STRING_FILE_LABEL);	×
319	if (r < 0) {	×
320	log_warning_errno(r, "Failed to write unit file '%s' from credential '%s', ignoring: %m",	×
321	unit, de->d_name);
322	continue;	×
323	}
324
325	log_debug("Wrote unit file '%s' from credential '%s'", unit, de->d_name);	×
326
327	} else if (dropin) {	×
328	_cleanup_free_ char *dropin_unit = NULL;	×
329	const char tilde, dropin_name;	×
330
331	tilde = strchrnul(dropin, '~');	×
332	dropin_unit = strndup(dropin, tilde - dropin);	×
333	if (!dropin_unit)	×
334	return log_oom();	×
335
336	if (!unit_name_is_valid(dropin_unit, UNIT_NAME_ANY)) {	×
337	log_warning("Invalid unit name '%s' in credential '%s', ignoring.",	×
338	dropin_unit, de->d_name);
339	continue;	×
340	}
341
342	dropin_name = isempty(tilde) ? "50-credential" : tilde + 1;	×
343	if (isempty(dropin_name)) {	×
344	log_warning("Empty drop-in name for unit '%s' in credential '%s', ignoring.",	×
345	dropin_unit, de->d_name);
346	continue;	×
347	}
348
349	r = write_drop_in(arg_dest, dropin_unit, /* level= */ UINT_MAX, dropin_name, d);	×
350	if (r < 0) {	×
351	log_warning_errno(r, "Failed to write drop-in '%s' for unit '%s' from credential '%s', ignoring: %m",	×
352	dropin_name, dropin_unit, de->d_name);
353	continue;	×
354	}
355
356	log_debug("Wrote drop-in '%s' for unit '%s' from credential '%s'", dropin_name, dropin_unit, de->d_name);	×
357	} else
358	assert_not_reached();	×
359	}
360
361	return 0;
362	}
363
364	static int run(const char dest, const char dest_early, const char *dest_late) {	20✔
365	const char *credentials_dir;	20✔
366	int r;	20✔
367
368	LIBCRYPTO_NOTE(suggested);	20✔
369	TPM2_NOTE(suggested);	20✔
370
371	assert_se(arg_dest = dest_early);	20✔
372
373	r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_RD_STRICT \| PROC_CMDLINE_STRIP_RD_PREFIX);	20✔
374	if (r < 0)	20✔
375	log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");	×
376
377	if (arg_debug_shell) {	20✔
378	if (strv_extend(&arg_wants, "debug-shell.service") < 0)	18✔
379	return log_oom();	×
380
381	RET_GATHER(r, install_debug_shell_dropin());	18✔
382	}
383
384	BIT_FOREACH(i, arg_breakpoints)	49✔
385	if (strv_extend(&arg_wants, breakpoint_info_table[i].unit) < 0)	29✔
386	return log_oom();	×
387
388	if (get_credentials_dir(&credentials_dir) >= 0)	20✔
389	RET_GATHER(r, process_unit_credentials(credentials_dir));	×
390
391	if (get_encrypted_credentials_dir(&credentials_dir) >= 0)	20✔
392	RET_GATHER(r, process_unit_credentials(credentials_dir));	×
393
394	RET_GATHER(r, generate_mask_symlinks());	20✔
395	RET_GATHER(r, generate_wants_symlinks());	20✔
396
397	return r;
398	}
399
400	DEFINE_MAIN_GENERATOR_FUNCTION(run);	20✔

systemd / systemd / 29132483780

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