e0f9e7bd03
In preparation for reusing the image dissector in the GPT auto-discovery logic, only optionally fail the dissection when we can't identify a root partition. In the GPT auto-discovery we are completely fine with any kind of root, given that we run when it is already mounted and all we do is find some additional auxiliary partitions on the same disk.
67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
/***
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This file is part of systemd.
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Copyright 2016 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <fcntl.h>
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#include <stdio.h>
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#include "dissect-image.h"
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#include "log.h"
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#include "loop-util.h"
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#include "string-util.h"
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int main(int argc, char *argv[]) {
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_cleanup_(loop_device_unrefp) LoopDevice *d = NULL;
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_cleanup_(dissected_image_unrefp) DissectedImage *m = NULL;
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int r, i;
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log_set_max_level(LOG_DEBUG);
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if (argc < 2) {
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log_error("Requires one command line argument.");
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return EXIT_FAILURE;
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}
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r = loop_device_make_by_path(argv[1], O_RDONLY, &d);
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if (r < 0) {
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log_error_errno(r, "Failed to set up loopback device: %m");
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return EXIT_FAILURE;
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}
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r = dissect_image(d->fd, NULL, 0, DISSECT_IMAGE_REQUIRE_ROOT, &m);
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if (r < 0) {
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log_error_errno(r, "Failed to dissect image: %m");
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return EXIT_FAILURE;
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}
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for (i = 0; i < _PARTITION_DESIGNATOR_MAX; i++) {
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if (!m->partitions[i].found)
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continue;
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printf("Found %s partition, %s of type %s at #%i (%s)\n",
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partition_designator_to_string(i),
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m->partitions[i].rw ? "writable" : "read-only",
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strna(m->partitions[i].fstype),
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m->partitions[i].partno,
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strna(m->partitions[i].node));
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}
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return EXIT_SUCCESS;
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}
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