chiark / gitweb /
treewide: use log_*_errno whenever %m is in the format string
[elogind.git] / src / cryptsetup / cryptsetup-generator.c
index 38c746b8bbe96307964f6d04a290fb58b59f10f0..b27223cd6c235765bd4559dc1479a14a089d2bcd 100644 (file)
 #include "mkdir.h"
 #include "strv.h"
 #include "fileio.h"
+#include "path-util.h"
+#include "dropin.h"
+#include "generator.h"
 
 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 char **arg_disks = NULL;
+static char **arg_options = NULL;
+static char *arg_keyfile = NULL;
 
 static bool has_option(const char *haystack, const char *needle) {
         const char *f = haystack;
@@ -74,9 +75,12 @@ static int create_disk(
                 const char *password,
                 const char *options) {
 
-        _cleanup_free_ char *p = NULL, *n = NULL, *d = NULL, *u = NULL, *from = NULL, *to = NULL, *e = NULL;
+        _cleanup_free_ char *p = NULL, *n = NULL, *d = NULL, *u = NULL, *to = NULL, *e = NULL,
+                *filtered = NULL;
         _cleanup_fclose_ FILE *f = NULL;
         bool noauto, nofail, tmp, swap;
+        char *from;
+        int r;
 
         assert(name);
         assert(device);
@@ -91,7 +95,11 @@ static int create_disk(
                 return -EINVAL;
         }
 
-        n = unit_name_from_path_instance("systemd-cryptsetup", name, ".service");
+        e = unit_name_escape(name);
+        if (!e)
+                return log_oom();
+
+        n = unit_name_build("systemd-cryptsetup", e, ".service");
         if (!n)
                 return log_oom();
 
@@ -109,7 +117,7 @@ static int create_disk(
 
         f = fopen(p, "wxe");
         if (!f) {
-                log_error("Failed to create unit file %s: %m", p);
+                log_error_errno(errno, "Failed to create unit file %s: %m", p);
                 return -errno;
         }
 
@@ -117,13 +125,13 @@ static int create_disk(
                 "# Automatically generated by systemd-cryptsetup-generator\n\n"
                 "[Unit]\n"
                 "Description=Cryptography Setup for %I\n"
-                "Documentation=man:systemd-cryptsetup@.service(8) man:crypttab(5)\n"
+                "Documentation=man:crypttab(5) man:systemd-cryptsetup-generator(8) man:systemd-cryptsetup@.service(8)\n"
                 "SourcePath=/etc/crypttab\n"
-                "Conflicts=umount.target\n"
                 "DefaultDependencies=no\n"
+                "Conflicts=umount.target\n"
                 "BindsTo=dev-mapper-%i.device\n"
                 "IgnoreOnIsolate=true\n"
-                "After=systemd-readahead-collect.service systemd-readahead-replay.service\n",
+                "After=cryptsetup-pre.target\n",
                 f);
 
         if (!nofail)
@@ -131,24 +139,28 @@ static int create_disk(
                         "Before=cryptsetup.target\n");
 
         if (password) {
-                if (streq(password, "/dev/urandom") ||
-                    streq(password, "/dev/random") ||
-                    streq(password, "/dev/hw_random"))
+                if (STR_IN_SET(password, "/dev/urandom", "/dev/random", "/dev/hw_random"))
                         fputs("After=systemd-random-seed.service\n", f);
-
                 else if (!streq(password, "-") && !streq(password, "none")) {
-                        _cleanup_free_ char *uu = fstab_node_to_udev_node(password);
-                        if (uu == NULL)
+                        _cleanup_free_ char *uu;
+
+                        uu = fstab_node_to_udev_node(password);
+                        if (!uu)
                                 return log_oom();
 
-                        if (is_device_path(uu)) {
-                                _cleanup_free_ char *dd = unit_name_from_path(uu, ".device");
-                                if (dd == NULL)
-                                        return log_oom();
+                        if (!path_equal(uu, "/dev/null")) {
+
+                                if (is_device_path(uu)) {
+                                        _cleanup_free_ char *dd;
 
-                                fprintf(f, "After=%1$s\nRequires=%1$s\n", dd);
-                        } else
-                                fprintf(f, "RequiresMountsFor=%s\n", password);
+                                        dd = unit_name_from_path(uu, ".device");
+                                        if (!dd)
+                                                return log_oom();
+
+                                        fprintf(f, "After=%1$s\nRequires=%1$s\n", dd);
+                                } else
+                                        fprintf(f, "RequiresMountsFor=%s\n", password);
+                        }
                 }
         }
 
@@ -163,6 +175,10 @@ static int create_disk(
                         "RequiresMountsFor=%s\n",
                         u);
 
+        r = generator_write_timeouts(arg_dest, device, name, options, &filtered);
+        if (r < 0)
+                return r;
+
         fprintf(f,
                 "\n[Service]\n"
                 "Type=oneshot\n"
@@ -170,7 +186,7 @@ static int create_disk(
                 "TimeoutSec=0\n" /* the binary handles timeouts anyway */
                 "ExecStart=" SYSTEMD_CRYPTSETUP_PATH " attach '%s' '%s' '%s' '%s'\n"
                 "ExecStop=" SYSTEMD_CRYPTSETUP_PATH " detach '%s'\n",
-                name, u, strempty(password), strempty(options),
+                name, u, strempty(password), strempty(filtered),
                 name);
 
         if (tmp)
@@ -184,14 +200,12 @@ static int create_disk(
                         name);
 
         fflush(f);
-
         if (ferror(f)) {
-                log_error("Failed to write file %s: %m", p);
+                log_error_errno(errno, "Failed to write file %s: %m", p);
                 return -errno;
         }
 
-        if (asprintf(&from, "../%s", n) < 0)
-                return log_oom();
+        from = strappenda("../", n);
 
         if (!noauto) {
 
@@ -201,7 +215,7 @@ static int create_disk(
 
                 mkdir_parents_label(to, 0755);
                 if (symlink(from, to) < 0) {
-                        log_error("Failed to create symlink %s: %m", to);
+                        log_error_errno(errno, "Failed to create symlink %s: %m", to);
                         return -errno;
                 }
 
@@ -215,15 +229,11 @@ static int create_disk(
 
                 mkdir_parents_label(to, 0755);
                 if (symlink(from, to) < 0) {
-                        log_error("Failed to create symlink %s: %m", to);
+                        log_error_errno(errno, "Failed to create symlink %s: %m", to);
                         return -errno;
                 }
         }
 
-        e = unit_name_escape(name);
-        if (!e)
-                return log_oom();
-
         free(to);
         to = strjoin(arg_dest, "/dev-mapper-", e, ".device.requires/", n, NULL);
         if (!to)
@@ -231,108 +241,62 @@ static int create_disk(
 
         mkdir_parents_label(to, 0755);
         if (symlink(from, to) < 0) {
-                log_error("Failed to create symlink %s: %m", to);
+                log_error_errno(errno, "Failed to create symlink %s: %m", to);
                 return -errno;
         }
 
         if (!noauto && !nofail) {
-                int r;
-                free(p);
-                p = strjoin(arg_dest, "/dev-mapper-", e, ".device.d/50-job-timeout-sec-0.conf", NULL);
-                if (!p)
+                _cleanup_free_ char *dmname;
+                dmname = strjoin("dev-mapper-", e, ".device", NULL);
+                if (!dmname)
                         return log_oom();
 
-                mkdir_parents_label(p, 0755);
-
-                r = write_string_file(p,
-                                "# Automatically generated by systemd-cryptsetup-generator\n\n"
-                                "[Unit]\n"
-                                "JobTimeoutSec=0\n"); /* the binary handles timeouts anyway */
-                if (r)
-                        return r;
+                r = write_drop_in(arg_dest, dmname, 90, "device-timeout",
+                                  "# Automatically generated by systemd-cryptsetup-generator \n\n"
+                                  "[Unit]\nJobTimeoutSec=0");
+                if (r < 0)
+                        return log_error_errno(r, "Failed to write device drop-in: %m");
         }
 
         return 0;
 }
 
-static int parse_proc_cmdline_word(const char *word) {
+static int parse_proc_cmdline_item(const char *key, const char *value) {
         int r;
 
-        if (startswith(word, "luks=")) {
-                r = parse_boolean(word + 5);
+        if (STR_IN_SET(key, "luks", "rd.luks") && value) {
+
+                r = parse_boolean(value);
                 if (r < 0)
-                        log_warning("Failed to parse luks switch %s. Ignoring.", word + 5);
+                        log_warning("Failed to parse luks switch %s. Ignoring.", value);
                 else
                         arg_enabled = r;
 
-        } else if (startswith(word, "rd.luks=")) {
-
-                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 (STR_IN_SET(key, "luks.crypttab", "rd.luks.crypttab") && value) {
 
-        } else if (startswith(word, "luks.crypttab=")) {
-                r = parse_boolean(word + 14);
+                r = parse_boolean(value);
                 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.", value);
                 else
                         arg_read_crypttab = r;
 
-        } else if (startswith(word, "rd.luks.crypttab=")) {
-
-                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 (STR_IN_SET(key, "luks.uuid", "rd.luks.uuid") && value) {
 
-        } else if (startswith(word, "luks.uuid=")) {
-                if (strv_extend(&arg_disks, word + 10) < 0)
+                if (strv_extend(&arg_disks, value) < 0)
                         return log_oom();
 
-        } else if (startswith(word, "rd.luks.uuid=")) {
-
-                if (in_initrd()) {
-                        if (strv_extend(&arg_disks, word + 13) < 0)
-                                return log_oom();
-                }
+        } else if (STR_IN_SET(key, "luks.options", "rd.luks.options") && value) {
 
-        } else if (startswith(word, "luks.options=")) {
-                if (strv_extend(&arg_options, word + 13) < 0)
+                if (strv_extend(&arg_options, value) < 0)
                         return log_oom();
 
-        } else if (startswith(word, "rd.luks.options=")) {
+        } else if (STR_IN_SET(key, "luks.key", "rd.luks.key") && value) {
 
-                if (in_initrd()) {
-                        if (strv_extend(&arg_options, word + 16) < 0)
-                                return log_oom();
-                }
-
-        } else if (startswith(word, "luks.key=")) {
                 free(arg_keyfile);
-                arg_keyfile = strdup(word + 9);
+                arg_keyfile = strdup(value);
                 if (!arg_keyfile)
                         return log_oom();
 
-        } else if (startswith(word, "rd.luks.key=")) {
-
-                if (in_initrd()) {
-                        free(arg_keyfile);
-                        arg_keyfile = strdup(word + 12);
-                        if (!arg_keyfile)
-                                return log_oom();
-                }
-
-        } else if (startswith(word, "luks.") ||
-                   (in_initrd() && startswith(word, "rd.luks."))) {
-
-                log_warning("Unknown kernel switch %s. Ignoring.", word);
         }
 
         return 0;
@@ -342,7 +306,7 @@ int main(int argc, char *argv[]) {
         _cleanup_strv_free_ char **disks_done = NULL;
         _cleanup_fclose_ FILE *f = NULL;
         unsigned n = 0;
-        int r = EXIT_FAILURE, r2 = EXIT_FAILURE;
+        int r = EXIT_FAILURE, r2 = EXIT_FAILURE, z;
         char **i;
 
         if (argc > 1 && argc != 4) {
@@ -359,8 +323,9 @@ int main(int argc, char *argv[]) {
 
         umask(0022);
 
-        if (parse_proc_cmdline(parse_proc_cmdline_word) < 0)
-                goto cleanup;
+        z = parse_proc_cmdline(parse_proc_cmdline_item);
+        if (z < 0)
+                log_warning_errno(z, "Failed to parse kernel command line, ignoring: %m");
 
         if (!arg_enabled) {
                 r = r2 = EXIT_SUCCESS;
@@ -377,13 +342,13 @@ int main(int argc, char *argv[]) {
                         if (errno == ENOENT)
                                 r = EXIT_SUCCESS;
                         else
-                                log_error("Failed to open /etc/crypttab: %m");
+                                log_error_errno(errno, "Failed to open /etc/crypttab: %m");
 
                         goto next;
                 }
 
                 if (fstat(fileno(f), &st) < 0) {
-                        log_error("Failed to stat /etc/crypttab: %m");
+                        log_error_errno(errno, "Failed to stat /etc/crypttab: %m");
                         goto next;
                 }
 
@@ -415,7 +380,7 @@ int main(int argc, char *argv[]) {
                         }
 
                         /*
-                          If options are specified on the kernel commandline, let them override
+                          If options are specified on the kernel command line, let them override
                           the ones from crypttab.
                         */
                         STRV_FOREACH(i, arg_options) {
@@ -426,7 +391,7 @@ int main(int argc, char *argv[]) {
                                 if (k == 2 && streq(proc_uuid, device + 5)) {
                                         free(options);
                                         options = strdup(p);
-                                        if (!proc_options) {
+                                        if (!options) {
                                                 log_oom();
                                                 goto cleanup;
                                         }
@@ -497,7 +462,7 @@ next:
 
                 if (arg_options) {
                         /*
-                          If options are specified on the kernel commandline, use them.
+                          If options are specified on the kernel command line, use them.
                         */
                         char **j;
 
@@ -509,13 +474,9 @@ next:
                                 k = sscanf(s, "%m[0-9a-fA-F-]=%ms", &proc_uuid, &proc_options);
                                 if (k == 2) {
                                         if (streq(proc_uuid, device + 5)) {
-                                                if (options)
-                                                        free(options);
-                                                options = strdup(proc_options);
-                                                if (!options) {
-                                                        log_oom();
-                                                        goto cleanup;
-                                                }
+                                                free(options);
+                                                options = proc_options;
+                                                proc_options = NULL;
                                         }
                                 } else if (!options) {
                                         /*