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git/fs: use a better heuristic for permissions.

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Since we now store /dist/plan9front in git, the
initial assumption that the owner of the repo
is the person touching it is not always true.

This change gives us a better heuristic for the
file permissions we should have in the files we
copy around, basing it off of the permissions of
the .git directory.
This commit is contained in:
Ori Bernstein 2021-06-22 23:55:54 +00:00
parent 5770332282
commit b904edadd8
3 changed files with 50 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

25
sys/src/cmd/git/fs.c
View file

@ -79,6 +79,7 @@ char *qroot[] = {
char gitdir[512];
char *username;
char *groupname;
char *mntpt = ".git/fs";
char **branches = nil;
Cache uqidcache[512];
@ -164,7 +165,7 @@ obj2dir(Dir *d, Crumb *c, Object *o, char *name)
d->mode = c->mode;
d->name = estrdup9p(name);
d->uid = estrdup9p(username);
d->gid = estrdup9p(username);
d->gid = estrdup9p(groupname);
d->muid = estrdup9p(username);
if(o->type == GBlob || o->type == GTag){
d->qid.type = 0;
@ -188,7 +189,7 @@ rootgen(int i, Dir *d, void *p)
d->qid.type = strcmp(qroot[i], "ctl") == 0 ? 0 : QTDIR;
d->qid.path = qpath(nil, i, i, Qroot);
d->uid = estrdup9p(username);
d->gid = estrdup9p(username);
d->gid = estrdup9p(groupname);
d->muid = estrdup9p(username);
d->mtime = c->mtime;
return 0;
@ -210,7 +211,7 @@ branchgen(int i, Dir *d, void *p)
d->qid.path = qpath(c, i, branchid(aux, aux->refpath), Qbranch | Internal);
d->mode = 0555 | DMDIR;
d->uid = estrdup9p(username);
d->gid = estrdup9p(username);
d->gid = estrdup9p(groupname);
d->muid = estrdup9p(username);
d->mtime = c->mtime;
d->atime = c->mtime;
@ -251,11 +252,10 @@ gtreegen(int i, Dir *d, void *p)
d->qid.type = o->type == GTree ? QTDIR : 0;
d->qid.path = qpath(c, i, o->id, aux->qdir);
d->mode = m;
d->mode |= (o->type == GTree) ? 0755 : 0644;
d->atime = c->mtime;
d->mtime = c->mtime;
d->uid = estrdup9p(username);
d->gid = estrdup9p(username);
d->gid = estrdup9p(groupname);
d->muid = estrdup9p(username);
d->name = estrdup9p(e->tree->ent[i].name);
d->length = o->size;
@ -271,7 +271,7 @@ gcommitgen(int i, Dir *d, void *p)
c = crumb(p, 0);
o = c->obj;
d->uid = estrdup9p(username);
d->gid = estrdup9p(username);
d->gid = estrdup9p(groupname);
d->muid = estrdup9p(username);
d->mode = 0444;
d->atime = o->commit->ctime;
@ -490,7 +490,7 @@ objwalk1(Qid *q, Object *o, Crumb *p, Crumb *c, char *name, vlong qdir, Gitaux *
}else if(o->type == GCommit){
q->type = 0;
c->mtime = o->commit->mtime;
c->mode = 0444;
c->mode = 0644;
assert(qdir == Qcommit || qdir == Qobject || qdir == Qcommittree || qdir == Qhead);
if(strcmp(name, "msg") == 0)
q->path = qpath(p, 0, o->id, Qcommitmsg);
@ -804,7 +804,7 @@ gitstat(Req *r)
aux = r->fid->aux;
c = crumb(aux, 0);
r->d.uid = estrdup9p(username);
r->d.gid = estrdup9p(username);
r->d.gid = estrdup9p(groupname);
r->d.muid = estrdup9p(username);
r->d.qid = r->fid->qid;
r->d.mtime = c->mtime;
@ -837,6 +837,8 @@ usage(void)
void
main(int argc, char **argv)
{
Dir *d;
gitinit();
ARGBEGIN{
case 'd':
@ -852,7 +854,12 @@ main(int argc, char **argv)
if(argc != 0)
usage();
username = getuser();
if((d = dirstat(".git")) == nil)
sysfatal("dirstat .git: %r");
username = strdup(d->uid);
groupname = strdup(d->gid);
free(d);
branches = emalloc(sizeof(char*));
branches[0] = nil;
postmountsrv(&gitsrv, nil, mntpt, MCREATE);