[PATCH 3/3] xfs_repair: add post-phase error injection points

Darrick J. Wong
2021-02-13T05:47:44Z

From: Darrick J. Wong <djwong@kernel.org>

Create an error injection point so that we can simulate repair failing
after a certain phase.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
repair/globals.c | 3 +++
repair/globals.h | 3 +++
repair/progress.c | 3 +++
repair/xfs_repair.c | 4 ++++
4 files changed, 13 insertions(+)

diff --git a/repair/globals.c b/repair/globals.c
index 110d98b6..537d068b 100644
--- a/repair/globals.c
+++ b/repair/globals.c
@@ -117,3 +117,6 @@ uint64_t *prog_rpt_done;

int ag_stride;
int thread_count;
+
+/* If nonzero, simulate failure after this phase. */
+int fail_after_phase;
diff --git a/repair/globals.h b/repair/globals.h
index 1d397b35..a9287320 100644
--- a/repair/globals.h
+++ b/repair/globals.h
@@ -162,4 +162,7 @@ extern uint64_t *prog_rpt_done;
extern int ag_stride;
extern int thread_count;

+/* If nonzero, simulate failure after this phase. */
+extern int fail_after_phase;
+
#endif /* _XFS_REPAIR_GLOBAL_H */
diff --git a/repair/progress.c b/repair/progress.c
index e5a9c1ef..5bbe58ec 100644
--- a/repair/progress.c
+++ b/repair/progress.c
@@ -410,6 +410,9 @@ timestamp(int end, int phase, char *buf)
current_phase = phase;
}

+ if (fail_after_phase && phase == fail_after_phase)
+ kill(getpid(), SIGKILL);
+
if (buf) {
tmp = localtime((const time_t *)&now);
sprintf(buf, _("%02d:%02d:%02d"), tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
diff --git a/repair/xfs_repair.c b/repair/xfs_repair.c
index 12e319ae..6b60b8f4 100644
--- a/repair/xfs_repair.c
+++ b/repair/xfs_repair.c
@@ -362,6 +362,10 @@ process_args(int argc, char **argv)

if (report_corrected && no_modify)
usage();
+
+ p = getenv("XFS_REPAIR_FAIL_AFTER_PHASE");
+ if (p)
+ fail_after_phase = (int)strtol(p, NULL, 0);
}

void __attribute__((noreturn))