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shared: Don't try to generate read-only filesystem that we don't support

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We need explicit support to generate read-only filesystems, since we
always need to pass a source tree to the mkfs binary to populate the
filesystem. As such, let's add an explicit check to return a
recognizable error when users try to generate a read-only filesystem
that we don't support.
This commit is contained in:
Daan De Meyer 2022-09-23 09:55:26 +02:00
parent eb43379cec
commit eaec699494
1 changed files with 4 additions and 0 deletions
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4
src/shared/mkfs-util.c
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@ -123,6 +123,10 @@ int make_filesystem(
return log_error_errno(SYNTHETIC_ERRNO(EPROTONOSUPPORT), "mksquashfs binary not available.");
if (r < 0)
return log_error_errno(r, "Failed to determine whether mksquashfs binary exists: %m");
} else if (fstype_is_ro(fstype)) {
return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
"Don't know how to create read-only file system '%s', refusing.",
fstype);
} else {
if (root)
return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),