cryptsetup: use more descriptive name for the variable and drop redundant function

Let's rename escaped_name to disk_path since this is an actual content
that pointer refers to. It is either path to encrypted block device
or path to encrypted image file.

Also drop redundant function disk_major_minor(). src is always set, and
it always points to either encrypted block device path (or symlink to
such device) or to encrypted image. In case it is set to device path
there is no need to reset it to /dev/block/major:minor symlink since
those paths are equivalent.

diff --git a/src/cryptsetup/cryptsetup.c b/src/cryptsetup/cryptsetup.c
index b6d965e24ffca41f6e0fe216dbb4b74ec3190578..21c51022ef4a8a2afdc94f027976efba41ac391c 100644 (file)
--- a/src/cryptsetup/cryptsetup.c
+++ b/src/cryptsetup/cryptsetup.c
@@ -249,23 +249,6 @@ static int parse_options(const char *options) {
         return 0;
 }
 
-static int disk_major_minor(const char *path, char **ret) {
-        struct stat st;
-
-        assert(path);
-
-        if (stat(path, &st) < 0)
-                return -errno;
-
-        if (!S_ISBLK(st.st_mode))
-                return -EINVAL;
-
-        if (asprintf(ret, "/dev/block/%d:%d", major(st.st_rdev), minor(st.st_rdev)) < 0)
-                return -errno;
-
-        return 0;
-}
-
 static char* disk_description(const char *path) {
 
         static const char name_fields[] =
@@ -324,7 +307,7 @@ static char *disk_mount_point(const char *label) {
 }
 
 static int get_password(const char *vol, const char *src, usec_t until, bool accept_cached, char ***ret) {
-        _cleanup_free_ char *description = NULL, *name_buffer = NULL, *mount_point = NULL, *maj_min = NULL, *text = NULL, *escaped_name = NULL;
+        _cleanup_free_ char *description = NULL, *name_buffer = NULL, *mount_point = NULL, *text = NULL, *disk_path = NULL;
         _cleanup_strv_free_erase_ char **passwords = NULL;
         const char *name = NULL;
         char **p, *id;
@@ -337,6 +320,10 @@ static int get_password(const char *vol, const char *src, usec_t until, bool acc
         description = disk_description(src);
         mount_point = disk_mount_point(vol);
 
+        disk_path = cescape(src);
+        if (!disk_path)
+                return log_oom();
+
         if (description && streq(vol, description))
                 /* If the description string is simply the
                  * volume name, then let's not show this
@@ -358,19 +345,7 @@ static int get_password(const char *vol, const char *src, usec_t until, bool acc
         if (asprintf(&text, "Please enter passphrase for disk %s!", name) < 0)
                 return log_oom();
 
-        if (src)
-                (void) disk_major_minor(src, &maj_min);
-
-        if (maj_min) {
-                escaped_name = maj_min;
-                maj_min = NULL;
-        } else
-                escaped_name = cescape(src);
-
-        if (!escaped_name)
-                return log_oom();
-
-        id = strjoina("cryptsetup:", escaped_name);
+        id = strjoina("cryptsetup:", disk_path);
 
         r = ask_password_auto(text, "drive-harddisk", id, "cryptsetup", until,
                               ASK_PASSWORD_PUSH_CACHE | (accept_cached*ASK_PASSWORD_ACCEPT_CACHED),
@@ -386,7 +361,7 @@ static int get_password(const char *vol, const char *src, usec_t until, bool acc
                 if (asprintf(&text, "Please enter passphrase for disk %s! (verification)", name) < 0)
                         return log_oom();
 
-                id = strjoina("cryptsetup-verification:", escaped_name);
+                id = strjoina("cryptsetup-verification:", disk_path);
 
                 r = ask_password_auto(text, "drive-harddisk", id, "cryptsetup", until, ASK_PASSWORD_PUSH_CACHE, &passwords2);
                 if (r < 0)