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deploy: Bump the mtime on ostree/deploy after deployments finish 

This allows other processes (e.g. rpm-ostreed) to monitor for external
changes (e.g. if someone does `ostree admin undeploy`) in a relatively
sane fashion.

Specifically, I'm trying to fix:
https://github.com/projectatomic/rpm-ostree/issues/220
This commit is contained in:
Colin Walters 2016-03-02 16:26:09 -05:00
parent d25212f04a
commit d49718a619
2 changed files with 13 additions and 0 deletions
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7
src/libostree/ostree-sysroot-deploy.c
View File

@ -1855,6 +1855,13 @@ ostree_sysroot_write_deployments (OstreeSysroot *self,
requires_new_bootversion ? "yes" : "no",
new_deployments->len - self->deployments->len);
/* Allow other systems to monitor for changes */
if (utimensat (self->sysroot_fd, "ostree/deploy", NULL, 0) < 0)
{
glnx_set_prefix_error_from_errno (error, "%s", "futimens");
goto out;
}
/* Now reload from disk */
if (!ostree_sysroot_load (self, cancellable, error))
{

6
tests/admin-test.sh
View File

@ -27,11 +27,14 @@ function validate_bootloader() {
fi)
}
orig_mtime=$(stat -c '%.Y' sysroot/ostree/deploy)
${CMD_PREFIX} ostree --repo=sysroot/ostree/repo pull-local --remote=testos testos-repo testos/buildmaster/x86_64-runtime
rev=$(${CMD_PREFIX} ostree --repo=sysroot/ostree/repo rev-parse testos/buildmaster/x86_64-runtime)
export rev
# This initial deployment gets kicked off with some kernel arguments
${CMD_PREFIX} ostree admin deploy --karg=root=LABEL=MOO --karg=quiet --os=testos testos:testos/buildmaster/x86_64-runtime
new_mtime=$(stat -c '%.Y' sysroot/ostree/deploy)
assert_not_streq "${orig_mtime}" "${new_mtime}"
${CMD_PREFIX} ostree admin status | tee status.txt
validate_bootloader
@ -56,7 +59,10 @@ ${CMD_PREFIX} ostree admin status
echo "ok layout"
orig_mtime=$(stat -c '%.Y' sysroot/ostree/deploy)
${CMD_PREFIX} ostree admin deploy --os=testos testos:testos/buildmaster/x86_64-runtime
new_mtime=$(stat -c '%.Y' sysroot/ostree/deploy)
assert_not_streq "${orig_mtime}" "${new_mtime}"
# Need a new bootversion, sine we now have two deployments
assert_has_dir sysroot/boot/loader.0
assert_not_has_dir sysroot/boot/loader.1