X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fshared%2Finstall.c;h=987b36d40b4eba187dc2e11d435d10be3344b1c9;hp=24905e1af637b3fef03b5f68b8df25e49e9f22f8;hb=fb15be839500c39f6c2f006f45306d439e1a7add;hpb=d9e5e694ea7841045975426163c96fc9f71e6f7d diff --git a/src/shared/install.c b/src/shared/install.c index 24905e1af..987b36d40 100644 --- a/src/shared/install.c +++ b/src/shared/install.c @@ -36,25 +36,15 @@ #include "install.h" #include "conf-parser.h" #include "conf-files.h" - -typedef struct { - char *name; - char *path; - - char **aliases; - char **wanted_by; - char **required_by; -} InstallInfo; +#include "specifier.h" +#include "install-printf.h" typedef struct { Hashmap *will_install; Hashmap *have_installed; } InstallContext; -#define _cleanup_lookup_paths_free_ \ - __attribute__((cleanup(lookup_paths_free))) -#define _cleanup_install_context_done_ \ - __attribute__((cleanup(install_context_done))) +#define _cleanup_install_context_done_ _cleanup_(install_context_done) static int lookup_paths_init_from_scope(LookupPaths *paths, UnitFileScope scope) { assert(paths); @@ -185,11 +175,9 @@ static int mark_symlink_for_removal( path_kill_slashes(n); - r = set_put(*remove_symlinks_to, n); - if (r < 0) { - free(n); + r = set_consume(*remove_symlinks_to, n); + if (r < 0) return r == -EEXIST ? 0 : r; - } return 0; } @@ -205,7 +193,7 @@ static int remove_marked_symlinks_fd( char** files) { int r = 0; - DIR _cleanup_closedir_ *d = NULL; + _cleanup_closedir_ DIR *d = NULL; assert(remove_symlinks_to); assert(fd >= 0); @@ -242,7 +230,7 @@ static int remove_marked_symlinks_fd( if (de->d_type == DT_DIR) { int nfd, q; - char _cleanup_free_ *p = NULL; + _cleanup_free_ char *p = NULL; nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); if (nfd < 0) { @@ -267,7 +255,7 @@ static int remove_marked_symlinks_fd( r = q; } else if (de->d_type == DT_LNK) { - char _cleanup_free_ *p = NULL, *dest = NULL; + _cleanup_free_ char *p = NULL, *dest = NULL; int q; bool found; @@ -369,7 +357,7 @@ static int find_symlinks_fd( bool *same_name_link) { int r = 0; - DIR _cleanup_closedir_ *d = NULL; + _cleanup_closedir_ DIR *d = NULL; assert(name); assert(fd >= 0); @@ -402,7 +390,7 @@ static int find_symlinks_fd( if (de->d_type == DT_DIR) { int nfd, q; - char _cleanup_free_ *p = NULL; + _cleanup_free_ char *p = NULL; nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW); if (nfd < 0) { @@ -430,7 +418,7 @@ static int find_symlinks_fd( r = q; } else if (de->d_type == DT_LNK) { - char _cleanup_free_ *p = NULL, *dest = NULL; + _cleanup_free_ char *p = NULL, *dest = NULL; bool found_path, found_dest, b = false; int q; @@ -465,7 +453,7 @@ static int find_symlinks_fd( found_dest = streq(path_get_file_name(dest), name); if (found_path && found_dest) { - char _cleanup_free_ *t = NULL; + _cleanup_free_ char *t = NULL; /* Filter out same name links in the main * config path */ @@ -515,7 +503,7 @@ static int find_symlinks_in_scope( UnitFileState *state) { int r; - char _cleanup_free_ *path = NULL; + _cleanup_free_ char *path2 = NULL; bool same_name_link_runtime = false, same_name_link = false; assert(scope >= 0); @@ -523,6 +511,7 @@ static int find_symlinks_in_scope( assert(name); if (scope == UNIT_FILE_SYSTEM || scope == UNIT_FILE_GLOBAL) { + _cleanup_free_ char *path = NULL; /* First look in runtime config path */ r = get_config_path(scope, true, root_dir, &path); @@ -539,11 +528,11 @@ static int find_symlinks_in_scope( } /* Then look in the normal config path */ - r = get_config_path(scope, false, root_dir, &path); + r = get_config_path(scope, false, root_dir, &path2); if (r < 0) return r; - r = find_symlinks(name, path, &same_name_link); + r = find_symlinks(name, path2, &same_name_link); if (r < 0) return r; else if (r > 0) { @@ -574,7 +563,7 @@ int unit_file_mask( unsigned *n_changes) { char **i; - char _cleanup_free_ *prefix; + _cleanup_free_ char *prefix; int r; assert(scope >= 0); @@ -585,7 +574,7 @@ int unit_file_mask( return r; STRV_FOREACH(i, files) { - char _cleanup_free_ *path = NULL; + _cleanup_free_ char *path = NULL; if (!unit_name_is_valid(*i, true)) { if (r == 0) @@ -707,9 +696,9 @@ int unit_file_link( UnitFileChange **changes, unsigned *n_changes) { - LookupPaths _cleanup_lookup_paths_free_ paths = {NULL}; + _cleanup_lookup_paths_free_ LookupPaths paths = {}; char **i; - char _cleanup_free_ *config_path = NULL; + _cleanup_free_ char *config_path = NULL; int r, q; assert(scope >= 0); @@ -724,7 +713,7 @@ int unit_file_link( return r; STRV_FOREACH(i, files) { - char _cleanup_free_ *path = NULL; + _cleanup_free_ char *path = NULL; char *fn; struct stat st; @@ -765,7 +754,7 @@ int unit_file_link( } if (errno == EEXIST) { - char _cleanup_free_ *dest = NULL; + _cleanup_free_ char *dest = NULL; q = readlink_and_make_absolute(path, &dest); @@ -928,15 +917,15 @@ static int install_info_add_auto( return install_info_add(c, name_or_path, NULL); } -static int config_parse_also( - const char *filename, - unsigned line, - const char *section, - const char *lvalue, - int ltype, - const char *rvalue, - void *data, - void *userdata) { +static int config_parse_also(const char *unit, + const char *filename, + unsigned line, + const char *section, + const char *lvalue, + int ltype, + const char *rvalue, + void *data, + void *userdata) { char *w; size_t l; @@ -948,7 +937,7 @@ static int config_parse_also( assert(rvalue); FOREACH_WORD_QUOTED(w, l, rvalue, state) { - char _cleanup_free_ *n; + _cleanup_free_ char *n; int r; n = strndup(w, l); @@ -963,6 +952,34 @@ static int config_parse_also( return 0; } +static int config_parse_user(const char *unit, + const char *filename, + unsigned line, + const char *section, + const char *lvalue, + int ltype, + const char *rvalue, + void *data, + void *userdata) { + + InstallInfo *i = data; + char* printed; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + + r = install_full_printf(i, rvalue, &printed); + if (r < 0) + return r; + + free(i->user); + i->user = printed; + + return 0; +} + static int unit_file_load( InstallContext *c, InstallInfo *info, @@ -974,11 +991,12 @@ static int unit_file_load( { "Install", "WantedBy", config_parse_strv, 0, &info->wanted_by }, { "Install", "RequiredBy", config_parse_strv, 0, &info->required_by }, { "Install", "Also", config_parse_also, 0, c }, + { "Exec", "User", config_parse_user, 0, info }, { NULL, NULL, NULL, 0, NULL } }; int fd; - FILE _cleanup_fclose_ *f = NULL; + _cleanup_fclose_ FILE *f = NULL; int r; assert(c); @@ -995,7 +1013,8 @@ static int unit_file_load( return -ENOMEM; } - r = config_parse(path, f, NULL, config_item_table_lookup, (void*) items, true, info); + r = config_parse(NULL, path, f, NULL, + config_item_table_lookup, (void*) items, true, true, info); if (r < 0) return r; @@ -1041,8 +1060,8 @@ static int unit_file_search( info->path = path; else { if (r == -ENOENT && unit_name_is_instance(info->name)) { - /* unit file doesn't exist, however instance enablement was request */ - /* we will check if it is possible to load template unit file */ + /* Unit file doesn't exist, however instance enablement was requested. + * We will check if it is possible to load template unit file. */ char *template = NULL, *template_path = NULL, *template_dir = NULL; @@ -1053,7 +1072,7 @@ static int unit_file_search( return -ENOMEM; } - /* we will reuse path variable since we don't need it anymore */ + /* We will reuse path variable since we don't need it anymore. */ template_dir = path; *(strrchr(path, '/') + 1) = '\0'; @@ -1064,7 +1083,7 @@ static int unit_file_search( return -ENOMEM; } - /* let's try to load template unit */ + /* Let's try to load template unit. */ r = unit_file_load(c, info, template_path, allow_symlink); if (r >= 0) { info->path = strdup(template_path); @@ -1095,7 +1114,7 @@ static int unit_file_can_install( const char *name, bool allow_symlink) { - InstallContext _cleanup_install_context_done_ c = {NULL}; + _cleanup_install_context_done_ InstallContext c = {}; InstallInfo *i; int r; @@ -1126,7 +1145,7 @@ static int create_symlink( UnitFileChange **changes, unsigned *n_changes) { - char _cleanup_free_ *dest = NULL; + _cleanup_free_ char *dest = NULL; int r; assert(old_path); @@ -1177,16 +1196,17 @@ static int install_info_symlink_alias( assert(config_path); STRV_FOREACH(s, i->aliases) { - char *alias_path; + _cleanup_free_ char *alias_path = NULL, *dst = NULL; - alias_path = path_make_absolute(*s, config_path); + q = install_full_printf(i, *s, &dst); + if (q < 0) + return q; + alias_path = path_make_absolute(dst, config_path); if (!alias_path) return -ENOMEM; q = create_symlink(i->path, alias_path, force, changes, n_changes); - free(alias_path); - if (r == 0) r = q; } @@ -1208,18 +1228,21 @@ static int install_info_symlink_wants( assert(config_path); STRV_FOREACH(s, i->wanted_by) { - char *path; + _cleanup_free_ char *path = NULL, *dst = NULL; + + q = install_full_printf(i, *s, &dst); + if (q < 0) + return q; - if (!unit_name_is_valid(*s, true)) { + if (!unit_name_is_valid(dst, true)) { r = -EINVAL; continue; } - if (asprintf(&path, "%s/%s.wants/%s", config_path, *s, i->name) < 0) + if (asprintf(&path, "%s/%s.wants/%s", config_path, dst, i->name) < 0) return -ENOMEM; q = create_symlink(i->path, path, force, changes, n_changes); - free(path); if (r == 0) r = q; @@ -1242,18 +1265,21 @@ static int install_info_symlink_requires( assert(config_path); STRV_FOREACH(s, i->required_by) { - char *path; + _cleanup_free_ char *path = NULL, *dst = NULL; + + q = install_full_printf(i, *s, &dst); + if (q < 0) + return q; - if (!unit_name_is_valid(*s, true)) { + if (!unit_name_is_valid(dst, true)) { r = -EINVAL; continue; } - if (asprintf(&path, "%s/%s.requires/%s", config_path, *s, i->name) < 0) + if (asprintf(&path, "%s/%s.requires/%s", config_path, dst, i->name) < 0) return -ENOMEM; q = create_symlink(i->path, path, force, changes, n_changes); - free(path); if (r == 0) r = q; @@ -1271,7 +1297,7 @@ static int install_info_symlink_link( unsigned *n_changes) { int r; - char _cleanup_free_ *path = NULL; + _cleanup_free_ char *path = NULL; assert(i); assert(paths); @@ -1386,7 +1412,9 @@ static int install_context_mark_for_removal( assert_se(hashmap_move_one(c->have_installed, c->will_install, i->name) == 0); q = unit_file_search(c, i, paths, root_dir, false); - if (q < 0) { + if (q == -ENOENT) { + /* do nothing */ + } else if (q < 0) { if (r >= 0) r = q; @@ -1395,16 +1423,30 @@ static int install_context_mark_for_removal( r += q; if (unit_name_is_instance(i->name)) { - char *unit_file = NULL; + char *unit_file; + + if (i->path) { + unit_file = path_get_file_name(i->path); + + if (unit_name_is_instance(unit_file)) + /* unit file named as instance exists, thus all symlinks + * pointing to it will be removed */ + q = mark_symlink_for_removal(remove_symlinks_to, i->name); + else + /* does not exist, thus we will mark for removal symlinks + * to template unit file */ + q = mark_symlink_for_removal(remove_symlinks_to, unit_file); + } else { + /* If i->path is not set, it means that we didn't actually find + * the unit file. But we can still remove symlinks to the + * nonexistent template. */ + unit_file = unit_name_template(i->name); + if (!unit_file) + return log_oom(); - unit_file = path_get_file_name(i->path); - - if (unit_name_is_instance(unit_file)) - /* unit file named as instance exists, thus all symlinks pointing to it, will be removed */ - q = mark_symlink_for_removal(remove_symlinks_to, i->name); - else - /* does not exist, thus we will mark for removal symlinks to template unit file */ q = mark_symlink_for_removal(remove_symlinks_to, unit_file); + free(unit_file); + } } else q = mark_symlink_for_removal(remove_symlinks_to, i->name); @@ -1424,10 +1466,10 @@ int unit_file_enable( UnitFileChange **changes, unsigned *n_changes) { - LookupPaths _cleanup_lookup_paths_free_ paths = {NULL}; - InstallContext _cleanup_install_context_done_ c = {NULL}; + _cleanup_lookup_paths_free_ LookupPaths paths = {}; + _cleanup_install_context_done_ InstallContext c = {}; char **i; - char _cleanup_free_ *config_path = NULL; + _cleanup_free_ char *config_path = NULL; int r; assert(scope >= 0); @@ -1463,11 +1505,11 @@ int unit_file_disable( UnitFileChange **changes, unsigned *n_changes) { - LookupPaths _cleanup_lookup_paths_free_ paths = {NULL}; - InstallContext _cleanup_install_context_done_ c = {NULL}; + _cleanup_lookup_paths_free_ LookupPaths paths = {}; + _cleanup_install_context_done_ InstallContext c = {}; char **i; - char _cleanup_free_ *config_path = NULL; - Set _cleanup_set_free_free_ *remove_symlinks_to = NULL; + _cleanup_free_ char *config_path = NULL; + _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; int r, q; assert(scope >= 0); @@ -1504,43 +1546,101 @@ int unit_file_reenable( bool force, UnitFileChange **changes, unsigned *n_changes) { + int r; - LookupPaths _cleanup_lookup_paths_free_ paths = {NULL}; - InstallContext _cleanup_install_context_done_ c = {NULL}; - char **i; - char _cleanup_free_ *config_path = NULL; - Set _cleanup_set_free_free_ *remove_symlinks_to = NULL; - int r, q; + r = unit_file_disable(scope, runtime, root_dir, files, + changes, n_changes); + if (r < 0) + return r; + + return unit_file_enable(scope, runtime, root_dir, files, force, + changes, n_changes); +} + +int unit_file_set_default( + UnitFileScope scope, + const char *root_dir, + char *file, + UnitFileChange **changes, + unsigned *n_changes) { + + _cleanup_lookup_paths_free_ LookupPaths paths = {}; + _cleanup_install_context_done_ InstallContext c = {}; + _cleanup_free_ char *config_path = NULL; + char *path; + int r; + InstallInfo *i = NULL; assert(scope >= 0); assert(scope < _UNIT_FILE_SCOPE_MAX); + if (unit_name_to_type(file) != UNIT_TARGET) + return -EINVAL; + r = lookup_paths_init_from_scope(&paths, scope); if (r < 0) return r; - r = get_config_path(scope, runtime, root_dir, &config_path); + r = get_config_path(scope, false, root_dir, &config_path); if (r < 0) return r; - STRV_FOREACH(i, files) { - r = mark_symlink_for_removal(&remove_symlinks_to, *i); - if (r < 0) - return r; + r = install_info_add_auto(&c, file); + if (r < 0) + return r; - r = install_info_add_auto(&c, *i); - if (r < 0) + i = (InstallInfo*)hashmap_first(c.will_install); + + r = unit_file_search(&c, i, &paths, root_dir, false); + if (r < 0) + return r; + + path = strappenda(config_path, "/default.target"); + r = create_symlink(i->path, path, true, changes, n_changes); + if (r < 0) + return r; + + return 0; +} + +int unit_file_get_default( + UnitFileScope scope, + const char *root_dir, + char **name) { + + _cleanup_lookup_paths_free_ LookupPaths paths = {}; + char **p; + int r; + + r = lookup_paths_init_from_scope(&paths, scope); + if (r < 0) + return r; + + STRV_FOREACH(p, paths.unit_path) { + _cleanup_free_ char *path = NULL, *tmp = NULL; + + if (isempty(root_dir)) + path = strappend(*p, "/default.target"); + else + path = strjoin(root_dir, "/", *p, "/default.target", NULL); + + if (!path) + return -ENOMEM; + + r = readlink_malloc(path, &tmp); + if (r == -ENOENT) + continue; + else if (r < 0) return r; - } - r = remove_marked_symlinks(remove_symlinks_to, config_path, changes, n_changes, files); + *name = strdup(path_get_file_name(tmp)); + if (!*name) + return -ENOMEM; - /* Returns number of symlinks that where supposed to be installed. */ - q = install_context_apply(&c, &paths, config_path, root_dir, force, changes, n_changes); - if (r == 0) - r = q; + return 0; + } - return r; + return -ENOENT; } UnitFileState unit_file_get_state( @@ -1548,10 +1648,10 @@ UnitFileState unit_file_get_state( const char *root_dir, const char *name) { - LookupPaths _cleanup_lookup_paths_free_ paths = {NULL}; + _cleanup_lookup_paths_free_ LookupPaths paths = {}; UnitFileState state = _UNIT_FILE_STATE_INVALID; char **i; - char _cleanup_free_ *path = NULL; + _cleanup_free_ char *path = NULL; int r; assert(scope >= 0); @@ -1582,24 +1682,29 @@ UnitFileState unit_file_get_state( if (!path) return -ENOMEM; + /* + * Search for a unit file in our default paths, to + * be sure, that there are no broken symlinks. + */ if (lstat(path, &st) < 0) { r = -errno; - if (errno == ENOENT) - continue; - - return -errno; - } + if (errno != ENOENT) + return r; - if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode)) - return -ENOENT; + if (!unit_name_is_instance(name)) + continue; + } else { + if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode)) + return -ENOENT; - r = null_or_empty_path(path); - if (r < 0 && r != -ENOENT) - return r; - else if (r > 0) { - state = path_startswith(*i, "/run") ? - UNIT_FILE_MASKED_RUNTIME : UNIT_FILE_MASKED; - return state; + r = null_or_empty_path(path); + if (r < 0 && r != -ENOENT) + return r; + else if (r > 0) { + state = path_startswith(*i, "/run") ? + UNIT_FILE_MASKED_RUNTIME : UNIT_FILE_MASKED; + return state; + } } r = find_symlinks_in_scope(scope, root_dir, name, &state); @@ -1609,7 +1714,7 @@ UnitFileState unit_file_get_state( return state; r = unit_file_can_install(&paths, root_dir, path, true); - if (r < 0 && errno != -ENOENT) + if (r < 0 && errno != ENOENT) return r; else if (r > 0) return UNIT_FILE_DISABLED; @@ -1621,7 +1726,7 @@ UnitFileState unit_file_get_state( } int unit_file_query_preset(UnitFileScope scope, const char *name) { - char _cleanup_strv_free_ **files = NULL; + _cleanup_strv_free_ char **files = NULL; char **i; int r; @@ -1630,7 +1735,7 @@ int unit_file_query_preset(UnitFileScope scope, const char *name) { assert(name); if (scope == UNIT_FILE_SYSTEM) - r = conf_files_list(&files, ".preset", + r = conf_files_list(&files, ".preset", NULL, "/etc/systemd/system-preset", "/usr/local/lib/systemd/system-preset", "/usr/lib/systemd/system-preset", @@ -1639,7 +1744,7 @@ int unit_file_query_preset(UnitFileScope scope, const char *name) { #endif NULL); else if (scope == UNIT_FILE_GLOBAL) - r = conf_files_list(&files, ".preset", + r = conf_files_list(&files, ".preset", NULL, "/etc/systemd/user-preset", "/usr/local/lib/systemd/user-preset", "/usr/lib/systemd/user-preset", @@ -1651,7 +1756,7 @@ int unit_file_query_preset(UnitFileScope scope, const char *name) { return r; STRV_FOREACH(i, files) { - FILE _cleanup_fclose_ *f; + _cleanup_fclose_ FILE *f; f = fopen(*i, "re"); if (!f) { @@ -1671,7 +1776,7 @@ int unit_file_query_preset(UnitFileScope scope, const char *name) { if (!*l) continue; - if (strchr(COMMENTS, *l)) + if (strchr(COMMENTS "\n", *l)) continue; if (first_word(l, "enable")) { @@ -1706,11 +1811,11 @@ int unit_file_preset( UnitFileChange **changes, unsigned *n_changes) { - LookupPaths _cleanup_lookup_paths_free_ paths = {NULL}; - InstallContext _cleanup_install_context_done_ plus = {NULL}, minus = {NULL}; + _cleanup_lookup_paths_free_ LookupPaths paths = {}; + _cleanup_install_context_done_ InstallContext plus = {}, minus = {}; char **i; - char _cleanup_free_ *config_path = NULL; - Set _cleanup_set_free_free_ *remove_symlinks_to = NULL; + _cleanup_free_ char *config_path = NULL; + _cleanup_set_free_free_ Set *remove_symlinks_to = NULL; int r, q; assert(scope >= 0); @@ -1766,16 +1871,17 @@ static void unitfilelist_free(UnitFileList **f) { free((*f)->path); free(*f); } +#define _cleanup_unitfilelist_free_ _cleanup_(unitfilelist_free) int unit_file_get_list( UnitFileScope scope, const char *root_dir, Hashmap *h) { - LookupPaths _cleanup_lookup_paths_free_ paths = {NULL}; + _cleanup_lookup_paths_free_ LookupPaths paths = {}; char **i; - char _cleanup_free_ *buf = NULL; - DIR _cleanup_closedir_ *d = NULL; + _cleanup_free_ char *buf = NULL; + _cleanup_closedir_ DIR *d = NULL; int r; assert(scope >= 0); @@ -1817,8 +1923,7 @@ int unit_file_get_list( for (;;) { struct dirent *de; union dirent_storage buffer; - UnitFileList __attribute__((cleanup(unitfilelist_free))) - *f = NULL; + _cleanup_unitfilelist_free_ UnitFileList *f = NULL; r = readdir_r(d, &buffer.de, &de); if (r != 0)