int si_nodeopen(sinode *n, sr *r, sischeme *scheme, sspath *path,
sdsnapshotnode *sn)
{
int rc = ss_fileopen(&n->file, path->path);
if (ssunlikely(rc == -1)) {
sr_malfunction(r->e, "db file '%s' open error: %s",
ss_pathof(&n->file.path),
strerror(errno));
return -1;
}
rc = ss_fileseek(&n->file, n->file.size);
if (ssunlikely(rc == -1)) {
sr_malfunction(r->e, "db file '%s' seek error: %s",
ss_pathof(&n->file.path),
strerror(errno));
goto error;
}
int in_memory = 0;
if (scheme->storage == SI_SIN_MEMORY)
in_memory = 1;
rc = si_noderecover(n, r, sn, in_memory);
if (ssunlikely(rc == -1))
goto error;
if (scheme->mmap) {
rc = si_nodemap(n, r);
if (ssunlikely(rc == -1))
goto error;
}
return 0;
error:
si_nodeclose(n, r, 0);
return -1;
}
int si_nodeopen(sinode *n, sr *r, sischeme *scheme, sspath *path)
{
int rc = ss_fileopen(&n->file, path->path);
if (ssunlikely(rc == -1)) {
sr_malfunction(r->e, "db file '%s' open error: %s",
ss_pathof(&n->file.path),
strerror(errno));
return -1;
}
rc = ss_fileseek(&n->file, n->file.size);
if (ssunlikely(rc == -1)) {
sr_malfunction(r->e, "db file '%s' seek error: %s",
ss_pathof(&n->file.path),
strerror(errno));
goto error;
}
rc = si_noderecover(n, r, scheme->in_memory);
if (ssunlikely(rc == -1))
goto error;
if (scheme->mmap) {
rc = si_nodemap(n, r);
if (ssunlikely(rc == -1))
goto error;
}
return 0;
error:
si_nodeclose(n, r);
return -1;
}
static inline int
si_recoversnapshot(si *i, sr *r, sdsnapshot *s)
{
/* recovery stages:
snapshot (1) ok
snapshot.incomplete (2) remove snapshot.incomplete
snapshot (3) remove snapshot.incomplete, load snapshot
snapshot.incomplete
*/
/* recover snapshot file (crash recover) */
int snapshot = 0;
int snapshot_incomplete = 0;
char path[1024];
snprintf(path, sizeof(path), "%s/index", i->scheme->path);
snapshot = ss_vfsexists(r->vfs, path);
snprintf(path, sizeof(path), "%s/index.incomplete", i->scheme->path);
snapshot_incomplete = ss_vfsexists(r->vfs, path);
int rc;
if (snapshot_incomplete) {
rc = ss_vfsunlink(r->vfs, path);
if (ssunlikely(rc == -1)) {
sr_malfunction(r->e, "index file '%s' unlink error: %s",
path, strerror(errno));
return -1;
}
}
if (! snapshot)
return 0;
/* read snapshot file */
snprintf(path, sizeof(path), "%s/index", i->scheme->path);
ssize_t size = ss_vfssize(r->vfs, path);
if (ssunlikely(size == -1)) {
sr_malfunction(r->e, "index file '%s' read error: %s",
path, strerror(errno));
return -1;
}
rc = ss_bufensure(&s->buf, r->a, size);
if (ssunlikely(rc == -1))
return sr_oom_malfunction(r->e);
ssfile file;
ss_fileinit(&file, r->vfs);
rc = ss_fileopen(&file, path);
if (ssunlikely(rc == -1)) {
sr_malfunction(r->e, "index file '%s' open error: %s",
path, strerror(errno));
return -1;
}
rc = ss_filepread(&file, 0, s->buf.s, size);
if (ssunlikely(rc == -1)) {
sr_malfunction(r->e, "index file '%s' read error: %s",
path, strerror(errno));
ss_fileclose(&file);
return -1;
}
ss_bufadvance(&s->buf, size);
ss_fileclose(&file);
return 0;
}
