c61c3a4ebf
* Run restorecon on /data/.layout_version * Fix firmware image mounting, remove obsolete fw_mounter * Add mechanism to append things to rc files
124 lines
3.2 KiB
C
124 lines
3.2 KiB
C
/*
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* This file is part of MultiROM.
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*
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* MultiROM is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* MultiROM is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with MultiROM. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <string.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include "lib/log.h"
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#include "rcadditions.h"
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static void append_string_buffer(char **buf, const char *what) {
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size_t old_len = 0;
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if(*buf)
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old_len += strlen(*buf);
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*buf = realloc(*buf, old_len + strlen(what) + 1);
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(*buf)[old_len] = 0;
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strcat(*buf, what);
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}
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void rcadditions_append_trigger(struct rcadditions *r, const char *trigger, const char *what) {
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if(r->triggers == NULL)
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r->triggers = map_create();
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char **ref = (char**)map_get_ref(r->triggers, trigger);
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if(ref == NULL)
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map_add_not_exist(r->triggers, trigger, strdup(what));
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else
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append_string_buffer(ref, what);
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}
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void rcadditions_append_file(struct rcadditions *r, const char *what) {
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append_string_buffer(&r->eof_append, what);
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}
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void rcadditions_append_contexts(struct rcadditions *r, const char *what) {
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append_string_buffer(&r->file_contexts_append, what);
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}
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void rcadditions_free(struct rcadditions *r)
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{
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free(r->eof_append);
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r->eof_append = NULL;
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free(r->file_contexts_append);
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r->file_contexts_append = NULL;
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map_destroy(r->triggers, &free);
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r->triggers = NULL;
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}
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void rcadditions_write_to_files(struct rcadditions *r)
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{
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if(r->eof_append == NULL && r->triggers == NULL)
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return;
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FILE *f = fopen("/init.multirom.rc", "we");
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if(!f)
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{
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ERROR("Failed to create init.multirom.rc: %s\n", strerror(errno));
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return;
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}
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fputs("# This file is autogenerated by MultiROM during boot\n\n", f);
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if(r->triggers)
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{
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size_t i = 0;
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for(; i < r->triggers->size; ++i)
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{
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fprintf(f, "on %s\n", r->triggers->keys[i]);
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fputs((char*)r->triggers->values[i], f);
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fputc('\n', f);
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}
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}
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if(r->eof_append)
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{
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fputc('\n', f);
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fputs(r->eof_append, f);
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}
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fclose(f);
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chmod("/init.multirom.rc", 0750);
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f = fopen("/init.rc", "ae");
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if(!f)
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{
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ERROR("Failed to open init.rc: %s\n", strerror(errno));
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return;
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}
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fputs("\n# Added by MultiROM\nimport /init.multirom.rc\n", f);
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fclose(f);
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if(r->file_contexts_append)
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{
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f = fopen("/file_contexts", "ae");
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if(!f)
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{
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ERROR("Failed to open file_contexts: %s\n", strerror(errno));
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return;
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}
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fputs("\n# Added by multirom during boot\n", f);
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fputs(r->file_contexts_append, f);
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fclose(f);
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}
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}
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