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dissect: when pulling metadata from an image, don't bother with /home or ESP

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When we try to read meta-data from an image, don't bother with mounting
/home or the ESP, as that's not where the metadata is. This not only
speeds things up a bit, but also has the benefit that setups where an
unencrypted root is mixed with an encrypted /home (which I have on one
of my own systems) won't result in errors that the crypto key is needed.
This commit is contained in:
Lennart Poettering 2018-04-05 13:15:43 +02:00
parent 0bb8dfaa53
commit 429d4e414d
1 changed files with 4 additions and 2 deletions
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6
src/shared/dissect-image.c
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@ -1291,9 +1291,11 @@ int dissected_image_acquire_metadata(DissectedImage *m) {
if (mount(NULL, "/", NULL, MS_SLAVE | MS_REC, NULL) < 0)
_exit(EXIT_FAILURE);
r = dissected_image_mount(m, t, UID_INVALID, DISSECT_IMAGE_READ_ONLY);
if (r < 0)
r = dissected_image_mount(m, t, UID_INVALID, DISSECT_IMAGE_READ_ONLY|DISSECT_IMAGE_MOUNT_ROOT_ONLY);
if (r < 0) {
log_debug_errno(r, "Failed to mount dissected image: %m");
_exit(EXIT_FAILURE);
}
for (k = 0; k < _META_MAX; k++) {
_cleanup_close_ int fd = -1;