Use PRIu32 and PRIx32 format specifiers to fix warnings

When using "%d" or "%x" with uint32_t types, arm-none-eabi-gcc reports
warnings like below:

-- >8 -- >8 -- >8 -- >8 -- >8 -- >8 --

In file included from lfs.c:8:
lfs_util.h:45:12: warning: format '%d' expects argument of type 'int', but argument 4 has type 'lfs_block_t' {aka 'long unsigned int'} [-Wformat=]
     printf("lfs debug:%d: " fmt "\n", __LINE__, __VA_ARGS__)
            ^~~~~~~~~~~~~~~~
lfs.c:2512:21: note: in expansion of macro 'LFS_DEBUG'
                     LFS_DEBUG("Found partial move %d %d",
                     ^~~~~~~~~
lfs.c:2512:55: note: format string is defined here
                     LFS_DEBUG("Found partial move %d %d",
                                                      ~^
                                                      %ld

-- >8 -- >8 -- >8 -- >8 -- >8 -- >8 --

Fix this by replacing "%d" and "%x" with `"%" PRIu32` and `"%" PRIx32`.

emubd/lfs_emubd.c

@@ -16,6 +16,7 @@
 #include <unistd.h>
 #include <assert.h>
 #include <stdbool.h>
+#include <inttypes.h>
 
 
 // Block device emulated on existing filesystem
@@ -85,7 +86,7 @@ int lfs_emubd_read(const struct lfs_config *cfg, lfs_block_t block,
     memset(data, 0, size);
 
     // Read data
-    snprintf(emu->child, LFS_NAME_MAX, "%x", block);
+    snprintf(emu->child, LFS_NAME_MAX, "%" PRIx32, block);
 
     FILE *f = fopen(emu->path, "rb");
     if (!f && errno != ENOENT) {
@@ -124,7 +125,7 @@ int lfs_emubd_prog(const struct lfs_config *cfg, lfs_block_t block,
     assert(block < cfg->block_count);
 
     // Program data
-    snprintf(emu->child, LFS_NAME_MAX, "%x", block);
+    snprintf(emu->child, LFS_NAME_MAX, "%" PRIx32, block);
 
     FILE *f = fopen(emu->path, "r+b");
     if (!f) {
@@ -171,7 +172,7 @@ int lfs_emubd_erase(const struct lfs_config *cfg, lfs_block_t block) {
     assert(block < cfg->block_count);
 
     // Erase the block
-    snprintf(emu->child, LFS_NAME_MAX, "%x", block);
+    snprintf(emu->child, LFS_NAME_MAX, "%" PRIx32, block);
     struct stat st;
     int err = stat(emu->path, &st);
     if (err && errno != ENOENT) {
@@ -239,4 +240,3 @@ int lfs_emubd_sync(const struct lfs_config *cfg) {
 
     return 0;
 }
-

lfs.c

@@ -7,6 +7,8 @@
 #include "lfs.h"
 #include "lfs_util.h"
 
+#include <inttypes.h>
+
 
 /// Caching block device operations ///
 static int lfs_cache_read(lfs_t *lfs, lfs_cache_t *rcache,
@@ -308,7 +310,8 @@ static int lfs_alloc(lfs_t *lfs, lfs_block_t *block) {
 
         // check if we have looked at all blocks since last ack
         if (lfs->free.ack == 0) {
-            LFS_WARN("No more free space %d", lfs->free.i + lfs->free.off);
+            LFS_WARN("No more free space %" PRIu32,
+                    lfs->free.i + lfs->free.off);
             return LFS_ERR_NOSPC;
         }
 
@@ -478,7 +481,8 @@ static int lfs_dir_fetch(lfs_t *lfs,
     }
 
     if (!valid) {
-        LFS_ERROR("Corrupted dir pair at %d %d", tpair[0], tpair[1]);
+        LFS_ERROR("Corrupted dir pair at %" PRIu32 " %" PRIu32 ,
+                tpair[0], tpair[1]);
         return LFS_ERR_CORRUPT;
     }
 
@@ -601,7 +605,7 @@ static int lfs_dir_commit(lfs_t *lfs, lfs_dir_t *dir,
         break;
 relocate:
         //commit was corrupted
-        LFS_DEBUG("Bad block at %d", dir->pair[0]);
+        LFS_DEBUG("Bad block at %" PRIu32, dir->pair[0]);
 
         // drop caches and prepare to relocate block
         relocated = true;
@@ -609,7 +613,8 @@ relocate:
 
         // can't relocate superblock, filesystem is now frozen
         if (lfs_paircmp(oldpair, (const lfs_block_t[2]){0, 1}) == 0) {
-            LFS_WARN("Superblock %d has become unwritable", oldpair[0]);
+            LFS_WARN("Superblock %" PRIu32 " has become unwritable",
+                    oldpair[0]);
             return LFS_ERR_CORRUPT;
         }
 
@@ -622,7 +627,7 @@ relocate:
 
     if (relocated) {
         // update references if we relocated
-        LFS_DEBUG("Relocating %d %d to %d %d",
+        LFS_DEBUG("Relocating %" PRIu32 " %" PRIu32 " to %" PRIu32 " %" PRIu32,
                 oldpair[0], oldpair[1], dir->pair[0], dir->pair[1]);
         int err = lfs_relocate(lfs, oldpair, dir->pair);
         if (err) {
@@ -1227,7 +1232,7 @@ static int lfs_ctz_extend(lfs_t *lfs,
         }
 
 relocate:
-        LFS_DEBUG("Bad block at %d", nblock);
+        LFS_DEBUG("Bad block at %" PRIu32, nblock);
 
         // just clear cache and try a new block
         lfs_cache_drop(lfs, &lfs->pcache);
@@ -1384,7 +1389,7 @@ int lfs_file_close(lfs_t *lfs, lfs_file_t *file) {
 
 static int lfs_file_relocate(lfs_t *lfs, lfs_file_t *file) {
 relocate:
-    LFS_DEBUG("Bad block at %d", file->block);
+    LFS_DEBUG("Bad block at %" PRIu32, file->block);
 
     // just relocate what exists into new block
     lfs_block_t nblock;
@@ -2395,7 +2400,8 @@ static int lfs_relocate(lfs_t *lfs,
 
         // update internal root
         if (lfs_paircmp(oldpair, lfs->root) == 0) {
-            LFS_DEBUG("Relocating root %d %d", newpair[0], newpair[1]);
+            LFS_DEBUG("Relocating root %" PRIu32 " %" PRIu32,
+                    newpair[0], newpair[1]);
             lfs->root[0] = newpair[0];
             lfs->root[1] = newpair[1];
         }
@@ -2451,7 +2457,7 @@ int lfs_deorphan(lfs_t *lfs) {
 
             if (!res) {
                 // we are an orphan
-                LFS_DEBUG("Found orphan %d %d",
+                LFS_DEBUG("Found orphan %" PRIu32 " %" PRIu32,
                         pdir.d.tail[0], pdir.d.tail[1]);
 
                 pdir.d.tail[0] = cwd.d.tail[0];
@@ -2467,7 +2473,7 @@ int lfs_deorphan(lfs_t *lfs) {
 
             if (!lfs_pairsync(entry.d.u.dir, pdir.d.tail)) {
                 // we have desynced
-                LFS_DEBUG("Found desync %d %d",
+                LFS_DEBUG("Found desync %" PRIu32 " %" PRIu32,
                         entry.d.u.dir[0], entry.d.u.dir[1]);
 
                 pdir.d.tail[0] = entry.d.u.dir[0];
@@ -2502,14 +2508,14 @@ int lfs_deorphan(lfs_t *lfs) {
                 }
 
                 if (moved) {
-                    LFS_DEBUG("Found move %d %d",
+                    LFS_DEBUG("Found move %" PRIu32 " %" PRIu32,
                             entry.d.u.dir[0], entry.d.u.dir[1]);
                     err = lfs_dir_remove(lfs, &cwd, &entry);
                     if (err) {
                         return err;
                     }
                 } else {
-                    LFS_DEBUG("Found partial move %d %d",
+                    LFS_DEBUG("Found partial move %" PRIu32 " %" PRIu32,
                             entry.d.u.dir[0], entry.d.u.dir[1]);
                     entry.d.type &= ~0x80;
                     err = lfs_dir_update(lfs, &cwd, &entry, NULL);
@@ -2525,4 +2531,3 @@ int lfs_deorphan(lfs_t *lfs) {
 
     return 0;
 }
-