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lib/transaction_files.c: prepare to use obsolete files detection on package removal

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This commit is contained in:
Duncan Overbruck 2019-08-05 14:55:21 +02:00
parent c88f15c8fa
commit f0d90d3fec
1 changed files with 66 additions and 10 deletions
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76
lib/transaction_files.c
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@ -47,11 +47,13 @@ struct item {
const char *pkgname;
const char *pkgver;
const char *sha256;
const char *target;
uint64_t size;
enum type type;
unsigned int index;
bool preserve;
bool update;
bool remove;
} old, new;
bool deleted;
};
@ -332,12 +334,58 @@ collect_obsoletes(struct xbps_handle *xhp)
case ERANGE:
/* hash mismatch don't delete it */
rv = 0;
/*
* If the file is removed by uninstalling the package,
* no new package provides it and its not force removed,
* keep the file.
*/
if (item->old.remove && !item->new.pkgname &&
(xhp->flags & XBPS_FLAG_FORCE_REMOVE_FILES) != 0) {
xbps_dbg_printf(xhp, "[obsoletes] %s: SHA256 mismatch,"
" force remove %s: %s\n",
item->old.pkgname, typestr(item->old.type),
item->file+1);
break;
}
xbps_dbg_printf(xhp, "[obsoletes] %s: SHA256 mismatch,"
" skipping remove %s: %s\n",
item->old.pkgname, typestr(item->old.type),
item->file+1);
continue;
default:
break;
}
}
/*
* On package removal without force, keep symlinks if target changed.
*/
if (item->old.pkgname && item->old.remove &&
item->old.type == TYPE_LINK && !item->new.pkgname &&
(xhp->flags & XBPS_FLAG_FORCE_REMOVE_FILES) == 0) {
char path[PATH_MAX], *lnk;
const char *file = item->file+1;
if (strcmp(xhp->rootdir, "/") != 0) {
snprintf(path, sizeof(path), "%s%s",
xhp->rootdir, item->file+1);
file = path;
}
lnk = xbps_symlink_target(xhp, file, item->old.target);
if (lnk == NULL) {
xbps_dbg_printf(xhp, "[obsoletes] %s "
"symlink_target: %s\n", item->file+1, strerror(errno));
continue;
}
if (strcmp(lnk, item->old.target) != 0) {
xbps_dbg_printf(xhp, "[obsoletes] %s: skipping modified"
" symlink (stored `%s' current `%s'): %s\n",
item->old.pkgname, item->old.target, lnk, item->file+1);
free(lnk);
continue;
}
free(lnk);
}
/*
* Choose which package removes the obsolete files,
* based which packages is installed/unpacked first.
@ -355,7 +403,7 @@ collect_obsoletes(struct xbps_handle *xhp)
assert(pkgname);
xbps_dbg_printf(xhp, "[obsoletes] %s: removes %s: %s\n",
pkgname, typestr(item->old.type), item->file);
pkgname, typestr(item->old.type), item->file+1);
/*
* Mark file as being deleted, this is used when
@ -387,8 +435,8 @@ collect_obsoletes(struct xbps_handle *xhp)
static int
collect_file(struct xbps_handle *xhp, const char *file, size_t size,
const char *pkgname, const char *pkgver, unsigned int idx,
const char *sha256, enum type type, bool update, bool preserve,
bool removefile)
const char *sha256, enum type type, bool update, bool remove,
bool preserve, bool removefile, const char *target)
{
struct item *item;
@ -479,6 +527,8 @@ add:
item->old.index = idx;
item->old.preserve = preserve;
item->old.update = update;
item->old.remove = remove;
item->old.target = target;
if (sha256)
item->old.sha256 = strdup(sha256);
} else {
@ -489,6 +539,8 @@ add:
item->new.index = idx;
item->new.preserve = preserve;
item->new.update = update;
item->new.remove = remove;
item->new.target = target;
}
if (item->old.type && item->new.type) {
/*
@ -514,7 +566,7 @@ add:
static int
collect_files(struct xbps_handle *xhp, xbps_dictionary_t d,
const char *pkgname, const char *pkgver, unsigned int idx,
bool update, bool preserve, bool removefile)
bool update, bool remove, bool preserve, bool removefile)
{
xbps_array_t a;
xbps_dictionary_t filed;
@ -533,7 +585,7 @@ collect_files(struct xbps_handle *xhp, xbps_dictionary_t d,
size = 0;
xbps_dictionary_get_uint64(filed, "size", &size);
rv = collect_file(xhp, file, size, pkgname, pkgver, idx, sha256,
TYPE_FILE, update, preserve, removefile);
TYPE_FILE, update, remove, preserve, removefile, NULL);
if (rv == EEXIST) {
error = true;
continue;
@ -556,7 +608,7 @@ collect_files(struct xbps_handle *xhp, xbps_dictionary_t d,
size = 0;
#endif
rv = collect_file(xhp, file, size, pkgname, pkgver, idx, sha256,
TYPE_FILE, update, preserve, removefile);
TYPE_FILE, update, remove, preserve, removefile, NULL);
if (rv == EEXIST) {
error = true;
continue;
@ -567,10 +619,13 @@ collect_files(struct xbps_handle *xhp, xbps_dictionary_t d,
}
if ((a = xbps_dictionary_get(d, "links"))) {
for (i = 0; i < xbps_array_count(a); i++) {
const char *target = NULL;
filed = xbps_array_get(a, i);
xbps_dictionary_get_cstring_nocopy(filed, "file", &file);
xbps_dictionary_get_cstring_nocopy(filed, "target", &target);
assert(target);
rv = collect_file(xhp, file, 0, pkgname, pkgver, idx, NULL,
TYPE_LINK, update, preserve, removefile);
TYPE_LINK, update, remove, preserve, removefile, target);
if (rv == EEXIST) {
error = true;
continue;
@ -584,7 +639,7 @@ collect_files(struct xbps_handle *xhp, xbps_dictionary_t d,
filed = xbps_array_get(a, i);
xbps_dictionary_get_cstring_nocopy(filed, "file", &file);
rv = collect_file(xhp, file, 0, pkgname, pkgver, idx, NULL,
TYPE_DIR, update, preserve, removefile);
TYPE_DIR, update, remove, preserve, removefile, NULL);
if (rv == EEXIST) {
error = true;
continue;
@ -683,7 +738,7 @@ collect_binpkg_files(struct xbps_handle *xhp, xbps_dictionary_t pkg_repod,
goto out;
}
rv = collect_files(xhp, filesd, pkgname, pkgver, idx,
update, false, false);
update, false, false, false);
goto out;
}
archive_read_data_skip(ar);
@ -765,6 +820,7 @@ xbps_transaction_files(struct xbps_handle *xhp, xbps_object_iterator_t iter)
if (pkgd) {
const char *oldpkgver;
bool preserve = false;
bool remove = strcmp(trans, "remove") == 0;
xbps_dictionary_get_cstring_nocopy(pkgd, "pkgver", &oldpkgver);
if (!xbps_dictionary_get_bool(obj, "preserve", &preserve))
@ -781,7 +837,7 @@ xbps_transaction_files(struct xbps_handle *xhp, xbps_object_iterator_t iter)
xbps_set_cb_state(xhp, XBPS_STATE_FILES, 0, oldpkgver,
"%s: collecting files...", oldpkgver);
rv = collect_files(xhp, filesd, pkgname, pkgver, idx,
update, preserve, true);
update, remove, preserve, true);
if (rv != 0)
goto out;
}