oops... attached wrong patch. now with right patch...

On Mon, Jul 29, 2019 at 11:59 AM enh <[email protected]> wrote:
>
> This gets the tests passing on the host too, with util-linux 2.32.1
> blkid at least, except for the fact that we still don't support ntfs'
> $VOLUME_NAME attribute. Chasing that is quite a bit more work, and it's
> time I admitted to myself I'm unlikely to get round to it and just send
> this patch as is. "Half an eye is better than no eye".
> ---
>  tests/blkid.test   | 10 +++++-----
>  toys/other/blkid.c | 43 ++++++++++++++++++++++++++++++-------------
>  2 files changed, 35 insertions(+), 18 deletions(-)
From 95af7ceb5a10fc3365c20ab47af9f029a1ad2f01 Mon Sep 17 00:00:00 2001
From: Elliott Hughes <[email protected]>
Date: Mon, 29 Jul 2019 11:55:07 -0700
Subject: [PATCH] blkid: add SEC_TYPE, f2fs LABEL, and fix vfat/ntfs UUID.

This gets the tests passing on the host too, with util-linux 2.32.1
blkid at least, except for the fact that we still don't support ntfs'
$VOLUME_NAME attribute. Chasing that is quite a bit more work, and it's
time I admitted to myself I'm unlikely to get round to it and just send
this patch as is. "Half an eye is better than no eye".
---
 tests/blkid.test   | 10 +++++-----
 toys/other/blkid.c | 43 ++++++++++++++++++++++++++++++-------------
 2 files changed, 35 insertions(+), 18 deletions(-)

diff --git a/tests/blkid.test b/tests/blkid.test
index 436a0950..a669092d 100755
--- a/tests/blkid.test
+++ b/tests/blkid.test
@@ -17,24 +17,24 @@ testing "ext2" "BLKID ext2" \
   'temp.img: LABEL="myext2" UUID="e59093ba-4135-4fdb-bcc4-f20beae4dfaf" TYPE="ext2"\n' \
   "" "" 
 testing "ext3" "BLKID ext3" \
-  'temp.img: LABEL="myext3" UUID="79d1c877-1a0f-4e7d-b21d-fc32ae3ef101" TYPE="ext3"\n' \
+  'temp.img: LABEL="myext3" UUID="79d1c877-1a0f-4e7d-b21d-fc32ae3ef101" SEC_TYPE="ext2" TYPE="ext3"\n' \
   "" "" 
 testing "ext4" "BLKID ext4" \
   'temp.img: LABEL="myext4" UUID="dc4b7c00-c0c0-4600-af7e-0335f09770fa" TYPE="ext4"\n' \
   "" ""
 testing "f2fs" "BLKID f2fs" \
-  'temp.img: UUID="b53d3619-c204-4c0b-8504-36363578491c" TYPE="f2fs"\n' \
+  'temp.img: LABEL="myf2fs" UUID="b53d3619-c204-4c0b-8504-36363578491c" TYPE="f2fs"\n' \
   "" ""
 testing "msdos" "BLKID msdos" \
-  'temp.img: LABEL="mymsdos" UUID="5108-1e6e" TYPE="vfat"\n' "" ""
+  'temp.img: SEC_TYPE="msdos" LABEL="mymsdos" UUID="6E1E-0851" TYPE="vfat"\n' "" ""
 testing "ntfs" "BLKID ntfs" \
-  'temp.img: UUID="8585600838bfe16e" TYPE="ntfs"\n' "" ""
+  'temp.img: UUID="6EE1BF3808608585" TYPE="ntfs"\n' "" ""
 testing "reiserfs" "BLKID reiser3" \
   'temp.img: LABEL="myreiser" UUID="a5b99bec-45cc-41d7-986e-32f4b6fc28f2" TYPE="reiserfs"\n' \
   "" ""
 testing "squashfs" "BLKID squashfs" 'temp.img: TYPE="squashfs"\n' "" ""
 testing "vfat" "BLKID vfat" \
-  'temp.img: LABEL="myvfat" UUID="1db9-5673" TYPE="vfat"\n' "" ""
+  'temp.img: SEC_TYPE="msdos" LABEL="myvfat" UUID="7356-B91D" TYPE="vfat"\n' "" ""
 testing "xfs" "BLKID xfs" \
   'temp.img: LABEL="XFS_test" UUID="d63a1dc3-27d5-4dd4-8b38-f4f97f495c6f" TYPE="xfs"\n' \
   "" ""
diff --git a/toys/other/blkid.c b/toys/other/blkid.c
index 38559981..eecbffe3 100644
--- a/toys/other/blkid.c
+++ b/toys/other/blkid.c
@@ -39,13 +39,13 @@ struct fstype {
   {"swap", 0x4341505350415753LL, 8, 4086, 1036, 15, 1052},
   // NTFS label actually 8/16 0x4d80 but horrible: 16 bit wide characters via
   // codepage, something called a uuid that's only 8 bytes long...
-  {"ntfs", 0x5346544e, 4, 3, 0x48+(8<<24), 0, 0},
+  {"ntfs", 0x5346544e, 4, 3, 0x48, 0, 0},
 
   {"adfs", 0xadf5, 2, 0xc00, 0,0,0},
   {"bfs", 0x1badface, 4, 0, 0,0,0},
   {"btrfs", 0x4D5F53665248425FULL, 8, 65600, 65803, 256, 65819},
   {"cramfs", 0x28cd3d45, 4, 0, 0, 16, 48},
-  {"f2fs", 0xF2F52010, 4, 1024, 1132, 16, 1110},
+  {"f2fs", 0xF2F52010, 4, 1024, 1132, 512, 0x47c},
   {"jfs", 0x3153464a, 4, 32768, 32920, 16, 32904},
   {"nilfs", 0x3434, 2, 1030, 1176, 80, 1192},
   {"reiserfs", 0x724573496552ULL, 6, 8244, 8276, 16, 8292},
@@ -54,8 +54,8 @@ struct fstype {
   {"squashfs", 0x73717368, 4, 0, 0,0,0},
   {"xiafs", 0x012fd16d, 4, 572, 0,0,0},
   {"xfs", 0x42534658, 4, 0, 32, 12, 108},
-  {"vfat", 0x3233544146ULL, 5, 82, 67+(4<<24), 11, 71},  // fat32
-  {"vfat", 0x31544146, 4, 54, 39+(4<<24), 11, 43}     // fat1
+  {"vfat", 0x3233544146ULL, 5, 82, 67, 11, 71},  // fat32
+  {"vfat", 0x31544146, 4, 54, 39, 11, 43}     // fat1
 };
 
 static void flagshow(char *s, char *name)
@@ -112,8 +112,6 @@ static void do_blkid(int fd, char *name)
     if (toybuf[1120]&64) type = "ext4";
   }
 
-  // Could special case NTFS here...
-
   // Output for fstype
   if (*toys.which->name == 'f') {
     puts(type);
@@ -127,11 +125,21 @@ static void do_blkid(int fd, char *name)
   if (!FLAG(U) && len) {
     s = toybuf+fstypes[i].label_off-off;
     if (!strcmp(type, "vfat")) {
+      printf(" SEC_TYPE=\"msdos\"");
       while (len && s[len-1]==' ') len--;
       if (strstart(&s, "NO NAME")) len=0;
     }
-    if (len && *s) {
-      sprintf(buf, "%.*s", len, s);
+    // TODO: special case NTFS $VOLUME_NAME here...
+    if (len) {
+      if (!strcmp(type, "f2fs")) {
+        // Convert UTF16LE to ASCII by replacing non-ASCII with '?'.
+        // TODO: support non-ASCII.
+        for (j=0; j<len; j++) {
+          buf[j] = s[2*j];
+          if (s[2*j+1]) buf[j]='?';
+          if (!buf[j]) break;
+        }
+      } else sprintf(buf, "%.*s", len, s);
       if (FLAG(L)) return flagshow(buf, name);
       printf(" LABEL=\"%s\"", buf);
     }
@@ -139,18 +147,27 @@ static void do_blkid(int fd, char *name)
 
   len = fstypes[i].uuid_off;
   if (!FLAG(L) && len) {
-    int bits = 0x550, size = len >> 24, uoff = (len&((1<<24)-1))-off;
+    int uoff = len-off;
 
     // Assemble UUID with whatever size and set of dashes this filesystem uses
-    if (size) bits = 4*(size == 4);
-    else size = 16;
-    for (j = 0, s = buf; j < size; j++)
-      s += sprintf(s, "-%02x"+!(bits & (1<<j)), toybuf[uoff+j]);
+    s = buf;
+    if (!strcmp(type, "ntfs")) {
+      for (j = 7; j >= 0; --j) s += sprintf(s, "%02X", toybuf[uoff+j]);
+    } else if (!strcmp(type, "vfat")) {
+        s += sprintf(s, "%02X%02X-%02X%02X", toybuf[uoff+3], toybuf[uoff+2],
+                     toybuf[uoff+1], toybuf[uoff]);
+    } else {
+      for (j = 0; j < 16; j++)
+        s += sprintf(s, "-%02x"+!(0x550 & (1<<j)), toybuf[uoff+j]);
+    }
 
     if (FLAG(U)) return flagshow(buf, name);
     printf(" UUID=\"%s\"", buf);
   }
 
+  if ((!strcmp(type, "ext3")||!strcmp(type,"ext4")) && !(toybuf[1120]&~0x12))
+    printf(" SEC_TYPE=\"ext2\"");
+
   if (toys.optflags) return;
 
   printf(" TYPE=\"%s\"\n", type);
-- 
2.22.0.709.g102302147b-goog

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