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execute: restore ability to propagate creds from further up (i.e. container manager and such)

Browse source 
This was broken in 3989bdc1ad let's
restore the functionality.

Basically, we want that if a relative name is specified as source to
load from we take it relative to the credentials dir the service manager
itself got passed.
This commit is contained in:
Lennart Poettering 2022-04-13 23:35:15 +02:00
parent 61c5a49eb2
commit f344f7fdca
1 changed files with 12 additions and 9 deletions
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21
src/core/execute.c
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@ -2625,7 +2625,8 @@ static int load_credential(
assert(left);
if (path_is_absolute(path) || read_dfd >= 0) {
/* If this is an absolute path, read the data directly from it, and support AF_UNIX sockets */
/* If this is an absolute path (or a directory fd is specifier relative which to read), read
* the data directly from it, and support AF_UNIX sockets */
source = path;
flags |= READ_FULL_FILE_CONNECT_SOCKET;
@ -2784,17 +2785,19 @@ static int acquire_credentials(
HASHMAP_FOREACH(lc, context->load_credentials) {
_cleanup_close_ int sub_fd = -1;
/* Skip over credentials with unspecified paths. These are received by the
* service manager via the $CREDENTIALS_DIRECTORY environment variable. */
if (!is_path(lc->path) && streq(lc->id, lc->path))
continue;
/* If this is an absolute path, then try to open it as a directory. If that works, then we'll
* recurse into it. If it is an absolute path but it isn't a directory, then we'll open it as
* a regular file. Finally, if it's a relative path we will use it as a credential name to
* propagate a credential passed to us from further up. */
sub_fd = open(lc->path, O_DIRECTORY|O_CLOEXEC|O_RDONLY);
if (sub_fd < 0 && errno != ENOTDIR)
return -errno;
if (path_is_absolute(lc->path)) {
sub_fd = open(lc->path, O_DIRECTORY|O_CLOEXEC|O_RDONLY);
if (sub_fd < 0 && errno != ENOTDIR)
return -errno;
}
if (sub_fd < 0)
/* Regular file */
/* Regular file (incl. a credential passed in from higher up) */
r = load_credential(
context,
params,