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dissect-image: use backing_file stored in LoopDevice object to generate image name

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Follow-up for e374439f4b (#24322).

This also simplify the logic of generating image name from image path.
This commit is contained in:
Yu Watanabe
2022-09-07 20:45:24 +09:00
parent e77cab8248
commit 369de26fdf
6 changed files with 45 additions and 53 deletions
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src/test/test-loop-block.c
+3 -9
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@@ -39,7 +39,6 @@ static void* thread_func(void *ptr) {
_cleanup_(loop_device_unrefp) LoopDevice *loop = NULL;
_cleanup_(umount_and_rmdir_and_freep) char *mounted = NULL;
_cleanup_(dissected_image_unrefp) DissectedImage *dissected = NULL;
_cleanup_free_ char *path = NULL;
if (now(CLOCK_MONOTONIC) >= end) {
log_notice("Time's up, exiting thread's loop");
@@ -59,12 +58,7 @@ static void* thread_func(void *ptr) {
log_notice("Acquired loop device %s, will mount on %s", loop->node, mounted);
r = fd_get_path(fd, &path);
if (r < 0)
log_error_errno(r, "Failed to get path from fd: %m");
assert_se(r >= 0);
r = dissect_loop_device(loop, path, NULL, NULL, DISSECT_IMAGE_READ_ONLY, &dissected);
r = dissect_loop_device(loop, NULL, NULL, DISSECT_IMAGE_READ_ONLY, &dissected);
if (r < 0)
log_error_errno(r, "Failed dissect loopback device %s: %m", loop->node);
assert_se(r >= 0);
@@ -228,7 +222,7 @@ static int run(int argc, char *argv[]) {
pthread_t threads[arg_n_threads];
sd_id128_t id;
assert_se(dissect_loop_device(loop, p, NULL, NULL, 0, &dissected) >= 0);
assert_se(dissect_loop_device(loop, NULL, NULL, 0, &dissected) >= 0);
assert_se(dissected->partitions[PARTITION_ESP].found);
assert_se(dissected->partitions[PARTITION_ESP].node);
@@ -252,7 +246,7 @@ static int run(int argc, char *argv[]) {
assert_se(make_filesystem(dissected->partitions[PARTITION_HOME].node, "ext4", "home", id, true) >= 0);
dissected = dissected_image_unref(dissected);
assert_se(dissect_loop_device(loop, p, NULL, NULL, 0, &dissected) >= 0);
assert_se(dissect_loop_device(loop, NULL, NULL, 0, &dissected) >= 0);
assert_se(mkdtemp_malloc(NULL, &mounted) >= 0);