shaba/systemd
1
0
Fork 0
mirror of https://github.com/systemd/systemd.git synced 2024-10-29 21:55:36 +03:00
Code

Merge pull request #24692 from yuwata/dissect-image-fix-memleak

Browse Source 
dissect-image: fix memleak
This commit is contained in:
Yu Watanabe 2022-09-17 01:31:32 +09:00 committed by GitHub
commit 54ee1cd69d
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 12 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
src/shared/dissect-image.c
View File

@ -1957,14 +1957,13 @@ static int verity_partition(
* https://gitlab.com/cryptsetup/cryptsetup/-/merge_requests/96 */
if (r == -EINVAL && FLAGS_SET(flags, DISSECT_IMAGE_VERITY_SHARE))
return verity_partition(designator, m, v, verity, flags & ~DISSECT_IMAGE_VERITY_SHARE, d);
if (!IN_SET(r,
0, /* Success */
if (r < 0 && !IN_SET(r,
-EEXIST, /* Volume is already open and ready to be used */
-EBUSY, /* Volume is being opened but not ready, crypt_init_by_name can fetch details */
-ENODEV /* Volume is being opened but not ready, crypt_init_by_name would fail, try to open again */))
return r;
if (IN_SET(r, -EEXIST, -EBUSY)) {
struct crypt_device *existing_cd = NULL;
_cleanup_(sym_crypt_freep) struct crypt_device *existing_cd = NULL;
if (!restore_deferred_remove){
/* To avoid races, disable automatic removal on umount while setting up the new device. Restore it on failure. */
@ -1972,7 +1971,7 @@ static int verity_partition(
/* If activation returns EBUSY there might be no deferred removal to cancel, that's fine */
if (r < 0 && r != -ENXIO)
return log_debug_errno(r, "Disabling automated deferred removal for verity device %s failed: %m", node);
if (r == 0) {
if (r >= 0) {
restore_deferred_remove = strdup(name);
if (!restore_deferred_remove)
return -ENOMEM;
@ -1983,9 +1982,9 @@ static int verity_partition(
/* Same as above, -EINVAL can randomly happen when it actually means -EEXIST */
if (r == -EINVAL && FLAGS_SET(flags, DISSECT_IMAGE_VERITY_SHARE))
return verity_partition(designator, m, v, verity, flags & ~DISSECT_IMAGE_VERITY_SHARE, d);
if (!IN_SET(r, 0, -ENODEV, -ENOENT, -EBUSY))
if (r < 0 && !IN_SET(r, -ENODEV, -ENOENT, -EBUSY))
return log_debug_errno(r, "Checking whether existing verity device %s can be reused failed: %m", node);
if (r == 0) {
if (r >= 0) {
usec_t timeout_usec = 100 * USEC_PER_MSEC;
const char *e;
@ -2014,12 +2013,11 @@ static int verity_partition(
if (r < 0)
return r;
if (cd)
sym_crypt_free(cd);
cd = existing_cd;
cd = TAKE_PTR(existing_cd);
}
}
if (r == 0)
if (r >= 0)
break;
/* Device is being opened by another process, but it has not finished yet, yield for 2ms */
@ -2028,7 +2026,7 @@ static int verity_partition(
/* An existing verity device was reported by libcryptsetup/libdevmapper, but we can't use it at this time.
* Fall back to activating it with a unique device name. */
if (r != 0 && FLAGS_SET(flags, DISSECT_IMAGE_VERITY_SHARE))
if (r < 0 && FLAGS_SET(flags, DISSECT_IMAGE_VERITY_SHARE))
return verity_partition(designator, m, v, verity, flags & ~DISSECT_IMAGE_VERITY_SHARE, d);
/* Everything looks good and we'll be able to mount the device, so deferred remove will be re-enabled at that point. */