Re: [PATCH opkg] libopkg: pkg_hash: prefer original packages to satisfy dependencies
On 3/13/21 3:52 AM, Daniel Golle wrote: On Sat, Mar 13, 2021 at 02:00:40AM +0100, Matthias Schiffer wrote: When one package "provides" another non-virtual package, prefer to use the original package instead of the providing package. Example: Consider packages "foo" and "bar", where "foo" provides "bar". The current code will sort all candidates by name and use the last entry by default, so "foo" would be used to satisfy a dependency on "bar". Change the logic to prefer the actual package "bar" in this case. Reviewed-by: Daniel Golle Signed-off-by: Matthias Schiffer --- libopkg/pkg_hash.c | 14 -- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/libopkg/pkg_hash.c b/libopkg/pkg_hash.c index dbed3febfbbe..a07a25ec1e0b 100644 --- a/libopkg/pkg_hash.c +++ b/libopkg/pkg_hash.c @@ -284,6 +284,7 @@ pkg_t *pkg_hash_fetch_best_installation_candidate(abstract_pkg_t * apkg, int nmatching = 0; int wrong_arch_found = 0; int arch_priority; + int good_pkg_score = 0; pkg_vec_t *matching_pkgs; abstract_pkg_vec_t *matching_apkgs; abstract_pkg_vec_t *provided_apkg_vec; @@ -409,9 +410,18 @@ pkg_t *pkg_hash_fetch_best_installation_candidate(abstract_pkg_t * apkg, for (i = 0; i < matching_pkgs->len; i++) { pkg_t *matching = matching_pkgs->pkgs[i]; if (constraint_fcn(matching, cdata)) { - opkg_msg(DEBUG, "Candidate: %s %s.\n", -matching->name, pkg_get_string(matching, PKG_VERSION)); + int score = 1; + if (strcmp(matching->name, apkg->name) == 0) + score++; ++score; As you are not using the return value, no need for post-increment. The compiler should be able to recognize and optmize that away by now though, so probably it doesn't matter. The difference is only meaningful in C++, where preincrement and postincrement may use different operator overloads. In C, I prefer the postincrement when I don't need the result, simply for aesthetic reasons ;) + + opkg_msg(DEBUG, "Candidate: %s %s (score %d).\n", +matching->name, pkg_get_string(matching, PKG_VERSION), +score); + if (score < good_pkg_score) + continue; + good_pkg_by_name = matching; + good_pkg_score = score; /* It has been provided by hand, so it is what user want */ if (matching->provided_by_hand == 1) break; -- 2.30.2 ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel OpenPGP_signature Description: OpenPGP digital signature ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [PATCH opkg] libopkg: pkg_hash: prefer original packages to satisfy dependencies
On Sat, Mar 13, 2021 at 02:00:40AM +0100, Matthias Schiffer wrote: > When one package "provides" another non-virtual package, prefer to use > the original package instead of the providing package. > > Example: > > Consider packages "foo" and "bar", where "foo" provides "bar". > The current code will sort all candidates by name and use the last entry > by default, so "foo" would be used to satisfy a dependency on "bar". > Change the logic to prefer the actual package "bar" in this case. > Reviewed-by: Daniel Golle > Signed-off-by: Matthias Schiffer > --- > libopkg/pkg_hash.c | 14 -- > 1 file changed, 12 insertions(+), 2 deletions(-) > > diff --git a/libopkg/pkg_hash.c b/libopkg/pkg_hash.c > index dbed3febfbbe..a07a25ec1e0b 100644 > --- a/libopkg/pkg_hash.c > +++ b/libopkg/pkg_hash.c > @@ -284,6 +284,7 @@ pkg_t > *pkg_hash_fetch_best_installation_candidate(abstract_pkg_t * apkg, > int nmatching = 0; > int wrong_arch_found = 0; > int arch_priority; > + int good_pkg_score = 0; > pkg_vec_t *matching_pkgs; > abstract_pkg_vec_t *matching_apkgs; > abstract_pkg_vec_t *provided_apkg_vec; > @@ -409,9 +410,18 @@ pkg_t > *pkg_hash_fetch_best_installation_candidate(abstract_pkg_t * apkg, > for (i = 0; i < matching_pkgs->len; i++) { > pkg_t *matching = matching_pkgs->pkgs[i]; > if (constraint_fcn(matching, cdata)) { > - opkg_msg(DEBUG, "Candidate: %s %s.\n", > - matching->name, pkg_get_string(matching, > PKG_VERSION)); > + int score = 1; > + if (strcmp(matching->name, apkg->name) == 0) > + score++; ++score; As you are not using the return value, no need for post-increment. The compiler should be able to recognize and optmize that away by now though, so probably it doesn't matter. > + > + opkg_msg(DEBUG, "Candidate: %s %s (score %d).\n", > + matching->name, pkg_get_string(matching, > PKG_VERSION), > + score); > + if (score < good_pkg_score) > + continue; > + > good_pkg_by_name = matching; > + good_pkg_score = score; > /* It has been provided by hand, so it is what user > want */ > if (matching->provided_by_hand == 1) > break; > -- > 2.30.2 > > > ___ > openwrt-devel mailing list > openwrt-devel@lists.openwrt.org > https://lists.openwrt.org/mailman/listinfo/openwrt-devel ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
[PATCH opkg] libopkg: pkg_hash: prefer original packages to satisfy dependencies
When one package "provides" another non-virtual package, prefer to use the original package instead of the providing package. Example: Consider packages "foo" and "bar", where "foo" provides "bar". The current code will sort all candidates by name and use the last entry by default, so "foo" would be used to satisfy a dependency on "bar". Change the logic to prefer the actual package "bar" in this case. Signed-off-by: Matthias Schiffer --- libopkg/pkg_hash.c | 14 -- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/libopkg/pkg_hash.c b/libopkg/pkg_hash.c index dbed3febfbbe..a07a25ec1e0b 100644 --- a/libopkg/pkg_hash.c +++ b/libopkg/pkg_hash.c @@ -284,6 +284,7 @@ pkg_t *pkg_hash_fetch_best_installation_candidate(abstract_pkg_t * apkg, int nmatching = 0; int wrong_arch_found = 0; int arch_priority; + int good_pkg_score = 0; pkg_vec_t *matching_pkgs; abstract_pkg_vec_t *matching_apkgs; abstract_pkg_vec_t *provided_apkg_vec; @@ -409,9 +410,18 @@ pkg_t *pkg_hash_fetch_best_installation_candidate(abstract_pkg_t * apkg, for (i = 0; i < matching_pkgs->len; i++) { pkg_t *matching = matching_pkgs->pkgs[i]; if (constraint_fcn(matching, cdata)) { - opkg_msg(DEBUG, "Candidate: %s %s.\n", -matching->name, pkg_get_string(matching, PKG_VERSION)); + int score = 1; + if (strcmp(matching->name, apkg->name) == 0) + score++; + + opkg_msg(DEBUG, "Candidate: %s %s (score %d).\n", +matching->name, pkg_get_string(matching, PKG_VERSION), +score); + if (score < good_pkg_score) + continue; + good_pkg_by_name = matching; + good_pkg_score = score; /* It has been provided by hand, so it is what user want */ if (matching->provided_by_hand == 1) break; -- 2.30.2 ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel