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https://github.com/morgan9e/systemd
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e1384cfb09
Optional features allow distros to define sets of transfers that can be enabled or disabled by the system administrator. This is useful for situations where a distro may want to ship some resources version-locked to the core OS, but many people have no need for the resource, such as: development tools/compilers, drivers for specialized hardware, language packs, etc We also rename sysupdate.d/*.conf -> sysupdate.d/*.transfer, because now there are more than one type of definition in sysupdate.d/. For backwards compat, we still load *.conf files as long as no *.transfer files are found and the *.conf files don't try to declare themselves as part of any features Fixes https://github.com/systemd/systemd/issues/33343 Fixes https://github.com/systemd/systemd/issues/33344
122 lines
3.5 KiB
C
122 lines
3.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include "conf-parser.h"
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#include "hash-funcs.h"
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#include "path-util.h"
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#include "sysupdate-feature.h"
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#include "sysupdate.h"
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#include "web-util.h"
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static Feature *feature_free(Feature *f) {
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if (!f)
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return NULL;
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free(f->id);
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free(f->description);
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free(f->documentation);
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free(f->appstream);
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return mfree(f);
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}
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Feature *feature_new(void) {
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Feature *f;
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f = new(Feature, 1);
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if (!f)
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return NULL;
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*f = (Feature) {
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.n_ref = 1,
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};
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return f;
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}
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DEFINE_TRIVIAL_REF_UNREF_FUNC(Feature, feature, feature_free);
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DEFINE_HASH_OPS_WITH_VALUE_DESTRUCTOR(feature_hash_ops,
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char, string_hash_func, string_compare_func,
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Feature, feature_unref);
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static int config_parse_url_specifiers(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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char **s = ASSERT_PTR(data);
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_cleanup_free_ char *resolved = NULL;
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int r;
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assert(rvalue);
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if (isempty(rvalue)) {
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*s = mfree(*s);
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return 0;
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}
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r = specifier_printf(rvalue, NAME_MAX, specifier_table, arg_root, NULL, &resolved);
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if (r < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, r,
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"Failed to expand specifiers in %s=, ignoring: %s", lvalue, rvalue);
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return 0;
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}
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if (!http_url_is_valid(resolved)) {
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log_syntax(unit, LOG_WARNING, filename, line, 0,
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"%s= URL is not valid, ignoring: %s", lvalue, rvalue);
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return 0;
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}
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return free_and_replace(*s, resolved);
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}
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int feature_read_definition(Feature *f, const char *path, const char *const *dirs) {
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assert(f);
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ConfigTableItem table[] = {
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{ "Feature", "Description", config_parse_string, 0, &f->description },
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{ "Feature", "Documentation", config_parse_url_specifiers, 0, &f->documentation },
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{ "Feature", "AppStream", config_parse_url_specifiers, 0, &f->appstream },
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{ "Feature", "Enabled", config_parse_bool, 0, &f->enabled },
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{}
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};
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_cleanup_free_ char *filename = NULL;
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int r;
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assert(path);
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assert(dirs);
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r = path_extract_filename(path, &filename);
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if (r < 0)
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return log_error_errno(r, "Failed to extract filename from path '%s': %m", path);
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r = config_parse_many(
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STRV_MAKE_CONST(path),
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dirs,
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strjoina(filename, ".d"),
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arg_root,
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"Feature\0",
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config_item_table_lookup, table,
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CONFIG_PARSE_WARN,
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/* userdata= */ NULL,
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/* stats_by_path= */ NULL,
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/* drop_in_files= */ NULL);
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if (r < 0)
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return r;
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*ASSERT_PTR(endswith(filename, ".feature")) = 0; /* Remove the file extension */
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f->id = TAKE_PTR(filename);
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return 0;
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}
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