e2fsck: exit with exit status 0 if no errors were fixed

Previously, e2fsck would exit with a status code of 1 even though the
only changes that it made to the file system were various
optimziations and not fixing file system corruption.  Since the man
page states that an exit status of 1 means "file system errors
corrupted", fix e2fsck to return an exit status of 0.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>

16 files changed, 41 insertions, 18 deletions

diff --git a/e2fsck/e2fsck.conf.5.in b/e2fsck/e2fsck.conf.5.in
index 1848bdb8..0bfc76ab 100644
--- a/e2fsck/e2fsck.conf.5.in
+++ b/e2fsck/e2fsck.conf.5.in
@@ -303,6 +303,13 @@ of 'should this problem be fixed?'.  The
 option even overrides the
 .B -y
 option given on the command-line (just for the specific problem, of course).
+.TP
+.I not_a_fix
+This boolean option, it set to true, marks the problem as
+one where if the user gives permission to make the requested change,
+it does not mean that the file system had a problem which has since
+been fixed.  This is used for requests to optimize the file system's
+data structure, such as pruning an extent tree.
 @TDB_MAN_COMMENT@.SH THE [scratch_files] STANZA
 @TDB_MAN_COMMENT@The following relations are defined in the
 @TDB_MAN_COMMENT@.I [scratch_files]
diff --git a/e2fsck/journal.c b/e2fsck/journal.c
index 46fe7b4c..c4f58f1b 100644
--- a/e2fsck/journal.c
+++ b/e2fsck/journal.c
@@ -572,6 +572,7 @@ static void clear_v2_journal_fields(journal_t *journal)
 	if (!fix_problem(ctx, PR_0_CLEAR_V2_JOURNAL, &pctx))
 		return;
 
+	ctx->flags |= E2F_FLAG_PROBLEMS_FIXED;
 	memset(((char *) journal->j_superblock) + V1_SB_SIZE, 0,
 	       ctx->fs->blocksize-V1_SB_SIZE);
 	mark_buffer_dirty(journal->j_sb_buffer);
diff --git a/e2fsck/problem.c b/e2fsck/problem.c
index 34a671e5..4b250692 100644
--- a/e2fsck/problem.c
+++ b/e2fsck/problem.c
@@ -1276,12 +1276,12 @@ static struct e2fsck_problem problem_table[] = {
 	/* Inode extent tree could be shorter */
 	{ PR_1E_CAN_COLLAPSE_EXTENT_TREE,
 	  N_("@i %i @x tree (at level %b) could be shorter.  "),
-	  PROMPT_FIX, PR_NO_OK | PR_PREEN_NO | PR_PREEN_OK },
+	  PROMPT_FIX, PR_NO_OK | PR_PREEN_NO | PR_PREEN_OK | PR_NOT_A_FIX },
 
 	/* Inode extent tree could be narrower */
 	{ PR_1E_CAN_NARROW_EXTENT_TREE,
 	  N_("@i %i @x tree (at level %b) could be narrower.  "),
-	  PROMPT_FIX, PR_NO_OK | PR_PREEN_NO | PR_PREEN_OK },
+	  PROMPT_FIX, PR_NO_OK | PR_PREEN_NO | PR_PREEN_OK | PR_NOT_A_FIX },
 
 	/* Pass 2 errors */
 
@@ -2166,6 +2166,7 @@ int fix_problem(e2fsck_t ctx, problem_t code, struct problem_context *pctx)
 		reconfigure_bool(ctx, ptr, key, PR_NO_NOMSG, "no_nomsg");
 		reconfigure_bool(ctx, ptr, key, PR_PREEN_NOHDR, "preen_noheader");
 		reconfigure_bool(ctx, ptr, key, PR_FORCE_NO, "force_no");
+		reconfigure_bool(ctx, ptr, key, PR_NOT_A_FIX, "not_a_fix");
 		profile_get_integer(ctx->profile, "options",
 				    "max_count_problems", 0, 0,
 				    &ptr->max_count);
@@ -2283,7 +2284,8 @@ int fix_problem(e2fsck_t ctx, problem_t code, struct problem_context *pctx)
 	if (ptr->flags & PR_AFTER_CODE)
 		answer = fix_problem(ctx, ptr->second_code, pctx);
 
-	if (answer && (ptr->prompt != PROMPT_NONE))
+	if (answer && (ptr->prompt != PROMPT_NONE) &&
+	    !(ptr->flags & PR_NOT_A_FIX))
 		ctx->flags |= E2F_FLAG_PROBLEMS_FIXED;
 
 	return answer;
diff --git a/e2fsck/problemP.h b/e2fsck/problemP.h
index 7944cd6c..63bb8df6 100644
--- a/e2fsck/problemP.h
+++ b/e2fsck/problemP.h
@@ -44,3 +44,4 @@ struct latch_descr {
 #define PR_CONFIG	0x080000 /* This problem has been customized
 				    from the config file */
 #define PR_FORCE_NO	0x100000 /* Force the answer to be no */
+#define PR_NOT_A_FIX	0x200000 /* Yes doesn't mean a problem was fixed */
diff --git a/e2fsck/unix.c b/e2fsck/unix.c
index e00fa166..6029cc34 100644
--- a/e2fsck/unix.c
+++ b/e2fsck/unix.c
@@ -1908,11 +1908,23 @@ no_journal:
 		fix_problem(ctx, PR_6_IO_FLUSH, &pctx);
 
 	if (was_changed) {
-		exit_value |= FSCK_NONDESTRUCT;
-		if (!(ctx->options & E2F_OPT_PREEN))
-			log_out(ctx, _("\n%s: ***** FILE SYSTEM WAS "
-				       "MODIFIED *****\n"),
+		int fs_fixed = (ctx->flags & E2F_FLAG_PROBLEMS_FIXED);
+
+		if (fs_fixed)
+			exit_value |= FSCK_NONDESTRUCT;
+		if (!(ctx->options & E2F_OPT_PREEN)) {
+#if 0	/* Do this later; it breaks too many tests' golden outputs */
+			log_out(ctx, fs_fixed ?
+				_("\n%s: ***** FILE SYSTEM ERRORS "
+				  "CORRECTED *****\n") :
+				_("%s: File system was modified.\n"),
 				ctx->device_name);
+#else
+			log_out(ctx,
+				_("\n%s: ***** FILE SYSTEM WAS MODIFIED *****\n"),
+				ctx->device_name);
+#endif
+		}
 		if (ctx->mount_flags & EXT2_MF_ISROOT) {
 			log_out(ctx, _("%s: ***** REBOOT SYSTEM *****\n"),
 				ctx->device_name);
diff --git a/tests/f_collapse_extent_tree/expect.1 b/tests/f_collapse_extent_tree/expect.1
index e2eb65e0..8165a589 100644
--- a/tests/f_collapse_extent_tree/expect.1
+++ b/tests/f_collapse_extent_tree/expect.1
@@ -13,4 +13,4 @@ Pass 5: Checking group summary information
 
 test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
 test_filesys: 12/128 files (0.0% non-contiguous), 19/512 blocks
-Exit status is 1
+Exit status is 0
diff --git a/tests/f_compress_extent_tree_level/expect.1 b/tests/f_compress_extent_tree_level/expect.1
index a359c997..dd33f63d 100644
--- a/tests/f_compress_extent_tree_level/expect.1
+++ b/tests/f_compress_extent_tree_level/expect.1
@@ -20,4 +20,4 @@ Pass 5: Checking group summary information
 
 test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
 test_filesys: 12/128 files (8.3% non-contiguous), 26/512 blocks
-Exit status is 1
+Exit status is 0
diff --git a/tests/f_convert_bmap/expect.1 b/tests/f_convert_bmap/expect.1
index 7d2ca86e..c387962f 100644
--- a/tests/f_convert_bmap/expect.1
+++ b/tests/f_convert_bmap/expect.1
@@ -23,4 +23,4 @@ Pass 5: Checking group summary information
 
 test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
 test_filesys: 12/128 files (8.3% non-contiguous), 570/2048 blocks
-Exit status is 1
+Exit status is 0
diff --git a/tests/f_convert_bmap_and_extent/expect.1 b/tests/f_convert_bmap_and_extent/expect.1
index 7af91aa3..c86c5715 100644
--- a/tests/f_convert_bmap_and_extent/expect.1
+++ b/tests/f_convert_bmap_and_extent/expect.1
@@ -30,4 +30,4 @@ Pass 5: Checking group summary information
 
 test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
 test_filesys: 13/128 files (15.4% non-contiguous), 574/2048 blocks
-Exit status is 1
+Exit status is 0
diff --git a/tests/f_extent_htree/expect.1 b/tests/f_extent_htree/expect.1
index 223ca697..ea484053 100644
--- a/tests/f_extent_htree/expect.1
+++ b/tests/f_extent_htree/expect.1
@@ -26,4 +26,4 @@ test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
            0 sockets
 ------------
          343 files
-Exit status is 1
+Exit status is 0
diff --git a/tests/f_jnl_errno/expect.1 b/tests/f_jnl_errno/expect.1
index c5729512..41342344 100644
--- a/tests/f_jnl_errno/expect.1
+++ b/tests/f_jnl_errno/expect.1
@@ -6,4 +6,4 @@ Pass 5: Checking group summary information
 
 test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
 test_filesys: 11/2048 files (9.1% non-contiguous), 1330/8192 blocks
-Exit status is 1
+Exit status is 0
diff --git a/tests/f_journal/expect.1 b/tests/f_journal/expect.1
index a202c80c..0a18654d 100644
--- a/tests/f_journal/expect.1
+++ b/tests/f_journal/expect.1
@@ -59,4 +59,4 @@ Pass 5: Checking group summary information
 
 test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
 test_filesys: 53/2048 files (1.9% non-contiguous), 1409/8192 blocks
-Exit status is 1
+Exit status is 0
diff --git a/tests/f_orphan/expect.1 b/tests/f_orphan/expect.1
index eddc1f8b..087ebee2 100644
--- a/tests/f_orphan/expect.1
+++ b/tests/f_orphan/expect.1
@@ -11,4 +11,4 @@ Pass 5: Checking group summary information
 
 test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
 test_filesys: 12/2048 files (0.0% non-contiguous), 1303/8192 blocks
-Exit status is 1
+Exit status is 0
diff --git a/tests/f_orphan_extents_inode/expect.1 b/tests/f_orphan_extents_inode/expect.1
index 2eaab78a..5d713b36 100644
--- a/tests/f_orphan_extents_inode/expect.1
+++ b/tests/f_orphan_extents_inode/expect.1
@@ -7,4 +7,4 @@ Pass 5: Checking group summary information
 
 test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
 test_filesys: 12/16 files (0.0% non-contiguous), 21/100 blocks
-Exit status is 1
+Exit status is 0
diff --git a/tests/f_rehash_dir/expect.1 b/tests/f_rehash_dir/expect.1
index 60767651..c1449ba0 100644
--- a/tests/f_rehash_dir/expect.1
+++ b/tests/f_rehash_dir/expect.1
@@ -7,4 +7,4 @@ Pass 5: Checking group summary information
 
 test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
 test_filesys: 105/2048 files (2.9% non-contiguous), 336/512 blocks
-Exit status is 1
+Exit status is 0
diff --git a/tests/f_unsorted_EAs/expect.1 b/tests/f_unsorted_EAs/expect.1
index 7d588d7a..64b9045e 100644
--- a/tests/f_unsorted_EAs/expect.1
+++ b/tests/f_unsorted_EAs/expect.1
@@ -8,4 +8,4 @@ Pass 5: Checking group summary information
 
 test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
 test_filesys: 12/2048 files (0.0% non-contiguous), 1294/2048 blocks
-Exit status is 1
+Exit status is 0