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cryptsetup: try to show the mount point for a crypto disk if we can

This commit is contained in:
Lennart Poettering 2011-02-23 18:46:27 +01:00
parent be12dd0cb8
commit b61e476f51
1 changed files with 56 additions and 3 deletions
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59
src/cryptsetup.c
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@ -22,6 +22,7 @@
#include <string.h>
#include <errno.h>
#include <sys/mman.h>
#include <mntent.h>
#include <libcryptsetup.h>
#include <libudev.h>
@ -164,7 +165,8 @@ static char *disk_description(const char *path) {
goto finish;
if ((model = udev_device_get_property_value(device, "ID_MODEL_FROM_DATABASE")) ||
(model = udev_device_get_property_value(device, "ID_MODEL")))
(model = udev_device_get_property_value(device, "ID_MODEL")) ||
(model = udev_device_get_property_value(device, "DM_NAME")))
description = strdup(model);
finish:
@ -177,12 +179,40 @@ finish:
return description;
}
static char *disk_mount_point(const char *label) {
char *mp = NULL, *device = NULL;
FILE *f = NULL;
struct mntent *m;
/* Yeah, we don't support native systemd unit files here for now */
if (asprintf(&device, "/dev/mapper/%s", label) < 0)
goto finish;
if (!(f = setmntent("/etc/fstab", "r")))
goto finish;
while ((m = getmntent(f)))
if (path_equal(m->mnt_fsname, device)) {
mp = strdup(m->mnt_dir);
break;
}
finish:
if (f)
endmntent(f);
free(device);
return mp;
}
int main(int argc, char *argv[]) {
int r = EXIT_FAILURE;
struct crypt_device *cd = NULL;
char **passwords = NULL, *truncated_cipher = NULL;
const char *cipher = NULL, *cipher_mode = NULL, *hash = NULL, *name = NULL;
char *description = NULL;
char *description = NULL, *name_buffer = NULL, *mount_point = NULL;
if (argc < 3) {
log_error("This program requires at least two arguments.");
@ -201,6 +231,8 @@ int main(int argc, char *argv[]) {
usec_t until;
crypt_status_info status;
/* Arguments: systemd-cryptsetup attach VOLUME SOURCE-DEVICE [PASSWORD] [OPTIONS] */
if (argc < 4) {
log_error("attach requires at least two arguments.");
goto finish;
@ -224,7 +256,24 @@ int main(int argc, char *argv[]) {
mlockall(MCL_FUTURE);
description = disk_description(argv[3]);
name = description ? description : argv[2];
mount_point = disk_mount_point(argv[2]);
if (description && streq(argv[2], description)) {
/* If the description string is simply the
* volume name, then let's not show this
* twice */
free(description);
description = NULL;
}
if (mount_point && description)
asprintf(&name_buffer, "%s (%s) on %s", description, argv[2], mount_point);
else if (mount_point)
asprintf(&name_buffer, "%s on %s", argv[2], mount_point);
else if (description)
asprintf(&name_buffer, "%s (%s)", description, argv[2]);
name = name_buffer ? name_buffer : argv[2];
if ((k = crypt_init(&cd, argv[3]))) {
log_error("crypt_init() failed: %s", strerror(-k));
@ -318,6 +367,8 @@ int main(int argc, char *argv[]) {
strv_free(passwords2);
}
strv_uniq(passwords);
STRV_FOREACH(p, passwords) {
char *c;
@ -442,6 +493,8 @@ finish:
strv_free(passwords);
free(description);
free(mount_point);
free(name_buffer);
return r;
}