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Date: Thu, 11 Sep 2014 12:48:04 -0700
From: "Darrick J. Wong" <darrick.wong@...cle.com>
To: tytso@....edu
Cc: linux-ext4@...r.kernel.org
Subject: [PATCH 29/25] e2fsck: expand root dir if linking l+f fails
If there isn't space in the root directory to add the lost+found
entry, try expanding the root directory before failing the fsck.
Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com>
---
e2fsck/pass3.c | 8 ++++++++
tests/f_expandroot_create_lnf/expect.1 | 12 ++++++++++++
tests/f_expandroot_create_lnf/expect.2 | 7 +++++++
tests/f_expandroot_create_lnf/image.gz | Bin
tests/f_expandroot_create_lnf/name | 1 +
5 files changed, 28 insertions(+)
create mode 100644 tests/f_expandroot_create_lnf/expect.1
create mode 100644 tests/f_expandroot_create_lnf/expect.2
create mode 100644 tests/f_expandroot_create_lnf/image.gz
create mode 100644 tests/f_expandroot_create_lnf/name
diff --git a/e2fsck/pass3.c b/e2fsck/pass3.c
index 9860cdf..f03c7ae 100644
--- a/e2fsck/pass3.c
+++ b/e2fsck/pass3.c
@@ -530,7 +530,15 @@ skip_new_block:
* Finally, create the directory link
*/
pctx.errcode = ext2fs_link(fs, EXT2_ROOT_INO, name, ino, EXT2_FT_DIR);
+ if (pctx.errcode == EXT2_ET_DIR_NO_SPACE) {
+ pctx.errcode = ext2fs_expand_dir(fs, EXT2_ROOT_INO);
+ if (pctx.errcode)
+ goto link_error;
+ pctx.errcode = ext2fs_link(fs, EXT2_ROOT_INO, name, ino,
+ EXT2_FT_DIR);
+ }
if (pctx.errcode) {
+link_error:
pctx.str = "ext2fs_link";
fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
return 0;
diff --git a/tests/f_expandroot_create_lnf/expect.1 b/tests/f_expandroot_create_lnf/expect.1
new file mode 100644
index 0000000..9593dbf
--- /dev/null
+++ b/tests/f_expandroot_create_lnf/expect.1
@@ -0,0 +1,12 @@
+Pass 1: Checking inodes, blocks, and sizes
+Pass 2: Checking directory structure
+Pass 3: Checking directory connectivity
+/lost+found not found. Create? yes
+
+Pass 3A: Optimizing directories
+Pass 4: Checking reference counts
+Pass 5: Checking group summary information
+
+test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
+test_filesys: 16/64 files (0.0% non-contiguous), 33/1024 blocks
+Exit status is 1
diff --git a/tests/f_expandroot_create_lnf/expect.2 b/tests/f_expandroot_create_lnf/expect.2
new file mode 100644
index 0000000..5eec1f0
--- /dev/null
+++ b/tests/f_expandroot_create_lnf/expect.2
@@ -0,0 +1,7 @@
+Pass 1: Checking inodes, blocks, and sizes
+Pass 2: Checking directory structure
+Pass 3: Checking directory connectivity
+Pass 4: Checking reference counts
+Pass 5: Checking group summary information
+test_filesys: 16/64 files (6.3% non-contiguous), 33/1024 blocks
+Exit status is 0
diff --git a/tests/f_expandroot_create_lnf/image.gz b/tests/f_expandroot_create_lnf/image.gz
new file mode 100644
index 0000000000000000000000000000000000000000..ccdbfa7a03aafbc206638d704d8bb22b21a293ed
GIT binary patch
literal 1622
zcmb2|=3r2MEf~VY{Pynoe4juOh6lfwHLnVq9ARRT*uBKWY?_CPl9<ruWak#%tpT3e
zg0JK^2-piLiG_tJDaA%8OzfE28qwLSWOB*%=%pRy_x3Ev4Jo;_^2~SBbido*Z{04o
ze*V?ZI6scVVfU?xd8ZU}x?h&Mb1)mG?|-*Jv46|`o#&@...1rT>$J8k!D#h+^N%Zo
zbjx)2<+(m?ersr}+iD>6`55nY_iuOa{(X4w*Szjv{rJ4u|B7=gEiFv`XHENC`1-}|
z^^dpnzr9uc_DA=|f9BzRDH~V43)=Vgy49?u`ukEh*Vy@...A6zT<L;na&C|B*MIUH
zOMmS(HW$dVHF0KufDJ#cW<8(Y_I~Rc*TeBE7<DJl`*%%tQ&9bxpTCy|)z|-%*=M?N
zb;+X-FBhIY?l)J`X4baW3p1~7diYH&%<Ng>lD(~=y_FWX?>YI;X?K6<SoXtyOH$PT
z`nM;3%V!9u1~dGUzwp1|ANv>k1^*fU^1rBe_|FUyVqiFs6k>h<gu`vmz4tHv5I-<U
z!rQq{bnZEc)3S1mP^Uqt1*&Rxp{rcC1mBG>Yx{Nbe7;@ys`XM6^Ixur=eL~8Irm)e
zyIH5|s%LJ|d2-!j{`!3qhue3}TQ0$EUUfV7U*ol%22%OkrkytK{~sA)d;b02cl!PH
zm;dwqTzlY9#hh#Q(dp6ur#j^){}oP){9j_eNb>dkuy6n8UbKntdc9AnZrz7ZzcyF>
z{r}Hs=i};k@...=UOkx}-tF;t`JM}3<NF?qU3~NF{`tWFXY=15>w=1Qf<^7m1pfag
zdw-tD#AE)I3t!ipKK|(c`PF|5_rFIU&lk!3GeveLsy|UYJ<1skfzc2cG9i$#O#ZIS
K!%zkW0R{l3<x~Iw
literal 0
HcmV?d00001
diff --git a/tests/f_expandroot_create_lnf/name b/tests/f_expandroot_create_lnf/name
new file mode 100644
index 0000000..f22542b
--- /dev/null
+++ b/tests/f_expandroot_create_lnf/name
@@ -0,0 +1 @@
+no space in root to create lost+found entry
--
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