diff options
Diffstat (limited to 'src/shared/path-lookup.c')
-rw-r--r-- | src/shared/path-lookup.c | 430 |
1 files changed, 0 insertions, 430 deletions
diff --git a/src/shared/path-lookup.c b/src/shared/path-lookup.c deleted file mode 100644 index 6e5529e0c7..0000000000 --- a/src/shared/path-lookup.c +++ /dev/null @@ -1,430 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <assert.h> -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <unistd.h> -#include <errno.h> - -#include "util.h" -#include "mkdir.h" -#include "strv.h" -#include "path-util.h" -#include "path-lookup.h" - -static const char* const systemd_running_as_table[_SYSTEMD_RUNNING_AS_MAX] = { - [SYSTEMD_SYSTEM] = "system", - [SYSTEMD_USER] = "user" -}; - -DEFINE_STRING_TABLE_LOOKUP(systemd_running_as, SystemdRunningAs); - -int user_config_home(char **config_home) { - const char *e; - - e = getenv("XDG_CONFIG_HOME"); - if (e) { - if (asprintf(config_home, "%s/systemd/user", e) < 0) - return -ENOMEM; - - return 1; - } else { - const char *home; - - home = getenv("HOME"); - if (home) { - if (asprintf(config_home, "%s/.config/systemd/user", home) < 0) - return -ENOMEM; - - return 1; - } - } - - return 0; -} - -static char** user_dirs( - const char *generator, - const char *generator_early, - const char *generator_late) { - - const char * const config_unit_paths[] = { - USER_CONFIG_UNIT_PATH, - "/etc/systemd/user", - "/run/systemd/user", - NULL - }; - - const char * const data_unit_paths[] = { - "/usr/local/lib/systemd/user", - "/usr/local/share/systemd/user", - USER_DATA_UNIT_PATH, - "/usr/lib/systemd/user", - "/usr/share/systemd/user", - NULL - }; - - const char *home, *e; - char *config_home = NULL, *data_home = NULL; - char **config_dirs = NULL, **data_dirs = NULL; - char **r = NULL, **t; - - /* Implement the mechanisms defined in - * - * http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html - * - * We look in both the config and the data dirs because we - * want to encourage that distributors ship their unit files - * as data, and allow overriding as configuration. - */ - - if (user_config_home(&config_home) < 0) - goto fail; - - home = getenv("HOME"); - - e = getenv("XDG_CONFIG_DIRS"); - if (e) { - config_dirs = strv_split(e, ":"); - if (!config_dirs) - goto fail; - } - - /* We don't treat /etc/xdg/systemd here as the spec - * suggests because we assume that that is a link to - * /etc/systemd/ anyway. */ - - e = getenv("XDG_DATA_HOME"); - if (e) { - if (asprintf(&data_home, "%s/systemd/user", e) < 0) - goto fail; - - } else if (home) { - if (asprintf(&data_home, "%s/.local/share/systemd/user", home) < 0) - goto fail; - - /* There is really no need for two unit dirs in $HOME, - * except to be fully compliant with the XDG spec. We - * now try to link the two dirs, so that we can - * minimize disk seeks a little. Further down we'll - * then filter out this link, if it is actually is - * one. */ - - mkdir_parents_label(data_home, 0777); - (void) symlink("../../../.config/systemd/user", data_home); - } - - e = getenv("XDG_DATA_DIRS"); - if (e) - data_dirs = strv_split(e, ":"); - else - data_dirs = strv_new("/usr/local/share", - "/usr/share", - NULL); - if (!data_dirs) - goto fail; - - /* Now merge everything we found. */ - if (generator_early) { - t = strv_append(r, generator_early); - if (!t) - goto fail; - strv_free(r); - r = t; - } - - if (config_home) { - t = strv_append(r, config_home); - if (!t) - goto fail; - strv_free(r); - r = t; - } - - if (!strv_isempty(config_dirs)) { - t = strv_merge_concat(r, config_dirs, "/systemd/user"); - if (!t) - goto finish; - strv_free(r); - r = t; - } - - t = strv_merge(r, (char**) config_unit_paths); - if (!t) - goto fail; - strv_free(r); - r = t; - - if (generator) { - t = strv_append(r, generator); - if (!t) - goto fail; - strv_free(r); - r = t; - } - - if (data_home) { - t = strv_append(r, data_home); - if (!t) - goto fail; - strv_free(r); - r = t; - } - - if (!strv_isempty(data_dirs)) { - t = strv_merge_concat(r, data_dirs, "/systemd/user"); - if (!t) - goto fail; - strv_free(r); - r = t; - } - - t = strv_merge(r, (char**) data_unit_paths); - if (!t) - goto fail; - strv_free(r); - r = t; - - if (generator_late) { - t = strv_append(r, generator_late); - if (!t) - goto fail; - strv_free(r); - r = t; - } - - if (!path_strv_make_absolute_cwd(r)) - goto fail; - -finish: - free(config_home); - strv_free(config_dirs); - free(data_home); - strv_free(data_dirs); - - return r; - -fail: - strv_free(r); - r = NULL; - goto finish; -} - -int lookup_paths_init( - LookupPaths *p, - SystemdRunningAs running_as, - bool personal, - const char *generator, - const char *generator_early, - const char *generator_late) { - - const char *e; - char *t; - - assert(p); - - /* First priority is whatever has been passed to us via env - * vars */ - e = getenv("SYSTEMD_UNIT_PATH"); - if (e) { - p->unit_path = path_split_and_make_absolute(e); - if (!p->unit_path) - return -ENOMEM; - } else - p->unit_path = NULL; - - if (strv_isempty(p->unit_path)) { - /* Nothing is set, so let's figure something out. */ - strv_free(p->unit_path); - - /* For the user units we include share/ in the search - * path in order to comply with the XDG basedir - * spec. For the system stuff we avoid such - * nonsense. OTOH we include /lib in the search path - * for the system stuff but avoid it for user - * stuff. */ - - if (running_as == SYSTEMD_USER) { - - if (personal) - p->unit_path = user_dirs(generator, generator_early, generator_late); - else - p->unit_path = strv_new( - /* If you modify this you also want to modify - * systemduserunitpath= in systemd.pc.in, and - * the arrays in user_dirs() above! */ - STRV_IFNOTNULL(generator_early), - USER_CONFIG_UNIT_PATH, - "/etc/systemd/user", - "/run/systemd/user", - STRV_IFNOTNULL(generator), - "/usr/local/lib/systemd/user", - "/usr/local/share/systemd/user", - USER_DATA_UNIT_PATH, - "/usr/lib/systemd/user", - "/usr/share/systemd/user", - STRV_IFNOTNULL(generator_late), - NULL); - - if (!p->unit_path) - return -ENOMEM; - - } else { - p->unit_path = strv_new( - /* If you modify this you also want to modify - * systemdsystemunitpath= in systemd.pc.in! */ - STRV_IFNOTNULL(generator_early), - SYSTEM_CONFIG_UNIT_PATH, - "/etc/systemd/system", - "/run/systemd/system", - STRV_IFNOTNULL(generator), - "/usr/local/lib/systemd/system", - SYSTEM_DATA_UNIT_PATH, - "/usr/lib/systemd/system", -#ifdef HAVE_SPLIT_USR - "/lib/systemd/system", -#endif - STRV_IFNOTNULL(generator_late), - NULL); - - if (!p->unit_path) - return -ENOMEM; - } - } - - if (!path_strv_canonicalize(p->unit_path)) - return -ENOMEM; - - strv_uniq(p->unit_path); - path_strv_remove_empty(p->unit_path); - - if (!strv_isempty(p->unit_path)) { - - t = strv_join(p->unit_path, "\n\t"); - if (!t) - return -ENOMEM; - log_debug("Looking for unit files in:\n\t%s", t); - free(t); - } else { - log_debug("Ignoring unit files."); - strv_free(p->unit_path); - p->unit_path = NULL; - } - - if (running_as == SYSTEMD_SYSTEM) { -#ifdef HAVE_SYSV_COMPAT - /* /etc/init.d/ compatibility does not matter to users */ - - e = getenv("SYSTEMD_SYSVINIT_PATH"); - if (e) { - p->sysvinit_path = path_split_and_make_absolute(e); - if (!p->sysvinit_path) - return -ENOMEM; - } else - p->sysvinit_path = NULL; - - if (strv_isempty(p->sysvinit_path)) { - strv_free(p->sysvinit_path); - - p->sysvinit_path = strv_new( - SYSTEM_SYSVINIT_PATH, /* /etc/init.d/ */ - NULL); - if (!p->sysvinit_path) - return -ENOMEM; - } - - e = getenv("SYSTEMD_SYSVRCND_PATH"); - if (e) { - p->sysvrcnd_path = path_split_and_make_absolute(e); - if (!p->sysvrcnd_path) - return -ENOMEM; - } else - p->sysvrcnd_path = NULL; - - if (strv_isempty(p->sysvrcnd_path)) { - strv_free(p->sysvrcnd_path); - - p->sysvrcnd_path = strv_new( - SYSTEM_SYSVRCND_PATH, /* /etc/rcN.d/ */ - NULL); - if (!p->sysvrcnd_path) - return -ENOMEM; - } - - if (!path_strv_canonicalize(p->sysvinit_path)) - return -ENOMEM; - - if (!path_strv_canonicalize(p->sysvrcnd_path)) - return -ENOMEM; - - strv_uniq(p->sysvinit_path); - strv_uniq(p->sysvrcnd_path); - path_strv_remove_empty(p->sysvinit_path); - path_strv_remove_empty(p->sysvrcnd_path); - - if (!strv_isempty(p->sysvinit_path)) { - - t = strv_join(p->sysvinit_path, "\n\t"); - if (!t) - return -ENOMEM; - log_debug("Looking for SysV init scripts in:\n\t%s", t); - free(t); - } else { - log_debug("Ignoring SysV init scripts."); - strv_free(p->sysvinit_path); - p->sysvinit_path = NULL; - } - - if (!strv_isempty(p->sysvrcnd_path)) { - - t = strv_join(p->sysvrcnd_path, "\n\t"); - if (!t) - return -ENOMEM; - - log_debug("Looking for SysV rcN.d links in:\n\t%s", t); - free(t); - } else { - log_debug("Ignoring SysV rcN.d links."); - strv_free(p->sysvrcnd_path); - p->sysvrcnd_path = NULL; - } -#else - log_debug("Disabled SysV init scripts and rcN.d links support"); -#endif - } - - return 0; -} - -void lookup_paths_free(LookupPaths *p) { - assert(p); - - strv_free(p->unit_path); - p->unit_path = NULL; - -#ifdef HAVE_SYSV_COMPAT - strv_free(p->sysvinit_path); - strv_free(p->sysvrcnd_path); - p->sysvinit_path = p->sysvrcnd_path = NULL; -#endif -} |