Create: support --readonly flag.

[thirdparty/mdadm.git] / super-gpt.c

diff --git a/super-gpt.c b/super-gpt.c
index e70a6fac3be9e5f2e467f292375d45aa8386726b..fa7fdabea004092db104bc1f838f00a5f2b06be6 100644 (file)
--- a/super-gpt.c
+++ b/super-gpt.c
@@ -76,8 +76,8 @@ static int load_gpt(struct supertype *st, int fd, char *devname)
 
        free_gpt(st);
 
-       if (posix_memalign((void**)&super, 512, 32*512) != 0) {
-               fprintf(stderr, Name ": %s could not allocate superblock\n",
+       if (posix_memalign((void**)&super, 4096, 32*512) != 0) {
+               pr_err("%s could not allocate superblock\n",
                        __func__);
                return 1;
        }
@@ -88,7 +88,7 @@ static int load_gpt(struct supertype *st, int fd, char *devname)
        if (read(fd, super, sizeof(*super)) != sizeof(*super)) {
        no_read:
                if (devname)
-                       fprintf(stderr, Name ": Cannot read partition table on %s\n",
+                       pr_err("Cannot read partition table on %s\n",
                                devname);
                free(super);
                return 1;
@@ -98,7 +98,7 @@ static int load_gpt(struct supertype *st, int fd, char *devname)
            super->parts[0].part_type != MBR_GPT_PARTITION_TYPE) {
        not_found:
                if (devname)
-                       fprintf(stderr, Name ": No partition table found on %s\n",
+                       pr_err("No partition table found on %s\n",
                                devname);
                free(super);
                return 1;
@@ -175,12 +175,14 @@ static void getinfo_gpt(struct supertype *st, struct mdinfo *info, char *map)
 
 static struct supertype *match_metadata_desc(char *arg)
 {
-       struct supertype *st = malloc(sizeof(*st));
+       struct supertype *st = xmalloc(sizeof(*st));
 
        if (!st)
                return st;
-       if (strcmp(arg, "gpt") != 0)
+       if (strcmp(arg, "gpt") != 0) {
+               free(st);
                return NULL;
+       }
 
        st->ss = &gpt;
        st->info = NULL;
@@ -193,11 +195,11 @@ static struct supertype *match_metadata_desc(char *arg)
 #ifndef MDASSEMBLE
 static int validate_geometry(struct supertype *st, int level,
                             int layout, int raiddisks,
-                            int chunk, unsigned long long size,
+                            int *chunk, unsigned long long size,
                             char *subdev, unsigned long long *freesize,
                             int verbose)
 {
-       fprintf(stderr, Name ": gpt metadata cannot be used this way\n");
+       pr_err("gpt metadata cannot be used this way\n");
        return 0;
 }
 #endif
@@ -205,8 +207,8 @@ static int validate_geometry(struct supertype *st, int level,
 struct superswitch gpt = {
 #ifndef MDASSEMBLE
        .examine_super = examine_gpt,
-#endif
        .validate_geometry = validate_geometry,
+#endif
        .match_metadata_desc = match_metadata_desc,
        .load_super = load_gpt,
        .store_super = store_gpt,