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main: obey DELETED_STR for non-existing targets

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Thomas Schoebel-Theuer 2020-03-25 09:41:17 +01:00
parent e4a83b9461
commit 570a429c73
1 changed files with 21 additions and 3 deletions
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24
kernel/sy_old/mars_main.c
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@ -2098,6 +2098,7 @@ int run_bone(struct mars_peerinfo *peer, struct mars_dent *remote_dent)
int status = 0;
struct kstat local_stat = {};
bool stat_ok;
bool is_deleted;
bool update_mtime = true;
bool update_ctime = true;
bool run_trigger = false;
@ -2123,6 +2124,9 @@ int run_bone(struct mars_peerinfo *peer, struct mars_dent *remote_dent)
status = mars_stat(remote_dent->d_path, &local_stat, true);
stat_ok = (status >= 0);
is_deleted = remote_dent->new_link &&
!strcmp(remote_dent->new_link, MARS_DELETED_STR);
if (stat_ok) {
update_mtime = lamport_time_compare(&remote_dent->new_stat.mtime, &local_stat.mtime) > 0;
update_ctime = lamport_time_compare(&remote_dent->new_stat.ctime, &local_stat.ctime) > 0;
@ -2165,7 +2169,12 @@ int run_bone(struct mars_peerinfo *peer, struct mars_dent *remote_dent)
#endif
}
} else if (S_ISLNK(remote_dent->new_stat.mode) && remote_dent->new_link) {
if (!stat_ok || update_mtime) {
/* Important: not not create .deleted values
* unless the object already exists.
*/
if (is_deleted ?
(stat_ok && update_mtime) :
(!stat_ok || update_mtime)) {
status = ordered_symlink(remote_dent->new_link,
remote_dent->d_path,
&remote_dent->new_stat.mtime,
@ -6092,20 +6101,25 @@ static int main_worker(struct mars_global *global, struct mars_dent *dent, bool
{
main_worker_fn worker;
int class = dent->d_class;
bool is_deleted;
if (class < 0 || class >= sizeof(main_classes)/sizeof(struct main_class)) {
MARS_ERR_ONCE(dent, "bad internal class %d of '%s'\n", class, dent->d_path);
return -EINVAL;
}
is_deleted = dent->new_link &&
!strcmp(dent->new_link, MARS_DELETED_STR);
switch (main_classes[class].cl_type) {
case 'd':
if (!S_ISDIR(dent->new_stat.mode)) {
if (!S_ISDIR(dent->new_stat.mode) && !is_deleted) {
MARS_ERR_ONCE(dent, "'%s' should be a directory, but is something else\n", dent->d_path);
return -EINVAL;
}
break;
case 'f':
if (!S_ISREG(dent->new_stat.mode)) {
if (!S_ISREG(dent->new_stat.mode) && !is_deleted) {
MARS_ERR_ONCE(dent, "'%s' should be a regular file, but is something else\n", dent->d_path);
return -EINVAL;
}
@ -6128,6 +6142,10 @@ static int main_worker(struct mars_global *global, struct mars_dent *dent, bool
return -EINVAL;
}
break;
default:
MARS_ERR_ONCE(dent, "'%s' class %d has unimplemented type %d\n",
dent->d_path, class, main_classes[class].cl_type);
return -EINVAL;
}
if (likely(class > CL_ROOT)) {
int father = main_classes[class].cl_father;