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dissect: ignore udev database entries from before the loopback attachment

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This tries to shorten the race of device reuse a bit more: let's ignore
udev database entries that are older than the time where we started to
use a loopback device.

This doesn't fix the whole loopback device raciness mess, but it makes
the race window a bit shorter.
This commit is contained in:
Lennart Poettering
2021-04-20 16:19:27 +02:00
parent 8ede1e86b2
commit 4a62257d68
10 changed files with 35 additions and 14 deletions
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4
src/shared/dissect-image.h
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@@ -159,8 +159,8 @@ DEFINE_TRIVIAL_CLEANUP_FUNC(MountOptions*, mount_options_free_all);
const char* mount_options_from_designator(const MountOptions *options, PartitionDesignator designator);
int probe_filesystem(const char *node, char **ret_fstype);
int dissect_image(int fd, const VeritySettings *verity, const MountOptions *mount_options, uint64_t uevent_seqnum_not_before, DissectImageFlags flags, DissectedImage **ret);
int dissect_image_and_warn(int fd, const char *name, const VeritySettings *verity, const MountOptions *mount_options, uint64_t uevent_seqnum_not_before, DissectImageFlags flags, DissectedImage **ret);
int dissect_image(int fd, const VeritySettings *verity, const MountOptions *mount_options, uint64_t uevent_seqnum_not_before, usec_t timestamp_not_before, DissectImageFlags flags, DissectedImage **ret);
int dissect_image_and_warn(int fd, const char *name, const VeritySettings *verity, const MountOptions *mount_options, uint64_t uevent_seqnum_not_before, usec_t timestamp_not_before, DissectImageFlags flags, DissectedImage **ret);
DissectedImage* dissected_image_unref(DissectedImage *m);
DEFINE_TRIVIAL_CLEANUP_FUNC(DissectedImage*, dissected_image_unref);