networkd: make sure Network and Link can always be freed

[elogind.git] / src / cryptsetup / cryptsetup.c

diff --git a/src/cryptsetup/cryptsetup.c b/src/cryptsetup/cryptsetup.c
index ba0fdbc8e88303d650798f44bbb67722e130f75a..0a15b503b0312b8fc0c21df1e155376601645eb2 100644 (file)
--- a/src/cryptsetup/cryptsetup.c
+++ b/src/cryptsetup/cryptsetup.c
@@ -25,7 +25,6 @@
 #include <mntent.h>
 
 #include <libcryptsetup.h>
-#include <libudev.h>
 
 #include "fileio.h"
 #include "log.h"
@@ -34,6 +33,8 @@
 #include "strv.h"
 #include "ask-password-api.h"
 #include "def.h"
+#include "libudev.h"
+#include "udev-util.h"
 
 static const char *opt_type = NULL; /* CRYPT_LUKS1, CRYPT_TCRYPT or CRYPT_PLAIN */
 static char *opt_cipher = NULL;
@@ -41,7 +42,7 @@ static unsigned opt_key_size = 0;
 static unsigned opt_keyfile_size = 0;
 static unsigned opt_keyfile_offset = 0;
 static char *opt_hash = NULL;
-static unsigned opt_tries = 0;
+static unsigned opt_tries = 3;
 static bool opt_readonly = false;
 static bool opt_verify = false;
 static bool opt_discards = false;
@@ -74,7 +75,7 @@ static int parse_one_option(const char *option) {
 
                 t = strdup(option+7);
                 if (!t)
-                        return -ENOMEM;
+                        return log_oom();
 
                 free(opt_cipher);
                 opt_cipher = t;
@@ -89,9 +90,10 @@ static int parse_one_option(const char *option) {
         } else if (startswith(option, "tcrypt-keyfile=")) {
 
                 opt_type = CRYPT_TCRYPT;
-                if (path_is_absolute(option+15))
-                        opt_tcrypt_keyfiles = strv_append(opt_tcrypt_keyfiles, strdup(option+15));
-                else
+                if (path_is_absolute(option+15)) {
+                        if (strv_extend(&opt_tcrypt_keyfiles, option + 15) < 0)
+                                return log_oom();
+                } else
                         log_error("Key file path '%s' is not absolute. Ignoring.", option+15);
 
         } else if (startswith(option, "keyfile-size=")) {
@@ -113,7 +115,7 @@ static int parse_one_option(const char *option) {
 
                 t = strdup(option+5);
                 if (!t)
-                        return -ENOMEM;
+                        return log_oom();
 
                 free(opt_hash);
                 opt_hash = t;
@@ -183,7 +185,7 @@ static void log_glue(int level, const char *msg, void *usrptr) {
         log_debug("%s", msg);
 }
 
-static char *disk_description(const char *path) {
+static char* disk_description(const char *path) {
 
         static const char name_fields[] = {
                 "ID_PART_ENTRY_NAME\0"
@@ -192,10 +194,9 @@ static char *disk_description(const char *path) {
                 "ID_MODEL\0"
         };
 
-        struct udev *udev = NULL;
-        struct udev_device *device = NULL;
+        _cleanup_udev_unref_ struct udev *udev = NULL;
+        _cleanup_udev_device_unref_ struct udev_device *device = NULL;
         struct stat st;
-        char *description = NULL;
         const char *i;
 
         assert(path);
@@ -212,54 +213,38 @@ static char *disk_description(const char *path) {
 
         device = udev_device_new_from_devnum(udev, 'b', st.st_rdev);
         if (!device)
-                goto finish;
+                return NULL;
 
         NULSTR_FOREACH(i, name_fields) {
                 const char *name;
 
                 name = udev_device_get_property_value(device, i);
-                if (!isempty(name)) {
-                        description = strdup(name);
-                        break;
-                }
+                if (!isempty(name))
+                        return strdup(name);
         }
 
-finish:
-        if (device)
-                udev_device_unref(device);
-
-        if (udev)
-                udev_unref(udev);
-
-        return description;
+        return NULL;
 }
 
 static char *disk_mount_point(const char *label) {
-        char *mp = NULL;
         _cleanup_free_ char *device = NULL;
-        FILE *f = NULL;
+        _cleanup_endmntent_ FILE *f = NULL;
         struct mntent *m;
 
         /* Yeah, we don't support native systemd unit files here for now */
 
         if (asprintf(&device, "/dev/mapper/%s", label) < 0)
-                goto finish;
+                return NULL;
 
         f = setmntent("/etc/fstab", "r");
         if (!f)
-                goto finish;
+                return NULL;
 
         while ((m = getmntent(f)))
-                if (path_equal(m->mnt_fsname, device)) {
-                        mp = strdup(m->mnt_dir);
-                        break;
-                }
-
-finish:
-        if (f)
-                endmntent(f);
+                if (path_equal(m->mnt_fsname, device))
+                        return strdup(m->mnt_dir);
 
-        return mp;
+        return NULL;
 }
 
 static int get_password(const char *name, usec_t until, bool accept_cached, char ***passwords) {
@@ -576,7 +561,6 @@ int main(int argc, char *argv[]) {
                 else
                         until = 0;
 
-                opt_tries = opt_tries > 0 ? opt_tries : 3;
                 opt_key_size = (opt_key_size > 0 ? opt_key_size : 256);
 
                 if (key_file) {
@@ -588,7 +572,7 @@ int main(int argc, char *argv[]) {
                                 log_warning("Key file %s is world-readable. This is not a good idea!", key_file);
                 }
 
-                for (tries = 0; tries < opt_tries; tries++) {
+                for (tries = 0; opt_tries == 0 || tries < opt_tries; tries++) {
                         _cleanup_strv_free_ char **passwords = NULL;
 
                         if (!key_file) {
@@ -616,7 +600,7 @@ int main(int argc, char *argv[]) {
                         log_warning("Invalid passphrase.");
                 }
 
-                if (tries >= opt_tries) {
+                if (opt_tries != 0 && tries >= opt_tries) {
                         log_error("Too many attempts; giving up.");
                         r = EXIT_FAILURE;
                         goto finish;