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repart: add simple mechanism to override fstype choices

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This is very useful for quickly testing things when building DDIs, in
particular in the CI, and trivial to add.
This commit is contained in:
Lennart Poettering 2023-10-05 18:54:43 +02:00
parent 489b0f515b
commit e59049d7a9
2 changed files with 12 additions and 0 deletions
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3
docs/ENVIRONMENT.md
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@ -552,3 +552,6 @@ SYSTEMD_HOME_DEBUG_SUFFIX=foo \
* `$SYSTEMD_REPART_MKFS_OPTIONS_<FSTYPE>` – configure additional arguments to use for
`mkfs` when formatting partition file systems. There's one variable for each
of the supported file systems.
* `$SYSTEMD_REPART_OVERRIDE_FSTYPE` – if set the value will override the file
system type specified in Format= lines in partition definition files.

9
src/partition/repart.c
View file

@ -1378,9 +1378,18 @@ static int config_parse_fstype(
void *userdata) {
char **fstype = ASSERT_PTR(data);
const char *e;
assert(rvalue);
/* Let's provide an easy way to override the chosen fstype for file system partitions */
e = secure_getenv("SYSTEMD_REPART_OVERRIDE_FSTYPE");
if (e && !streq(rvalue, e)) {
log_syntax(unit, LOG_NOTICE, filename, line, 0,
"Overriding defined file system type '%s' with '%s'.", rvalue, e);
rvalue = e;
}
if (!filename_is_valid(rvalue))
return log_syntax(unit, LOG_ERR, filename, line, 0,
"File system type is not valid, refusing: %s", rvalue);