diff options
Diffstat (limited to 'libc/bionic/system_properties.c')
| -rw-r--r-- | libc/bionic/system_properties.c | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/libc/bionic/system_properties.c b/libc/bionic/system_properties.c deleted file mode 100644 index 5e3b9e7..0000000 --- a/libc/bionic/system_properties.c +++ /dev/null @@ -1,171 +0,0 @@ -/* - * Copyright (C) 2008 The Android Open Source Project - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <stddef.h> -#include <errno.h> - -#include <sys/mman.h> - -#include <sys/socket.h> -#include <sys/un.h> -#include <sys/select.h> -#include <sys/types.h> -#include <netinet/in.h> - -#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_ -#include <sys/_system_properties.h> - -#include <sys/atomics.h> - -static const char property_service_name[] = PROP_SERVICE_NAME; - -static unsigned dummy_props = 0; - -prop_area *__system_property_area__ = (void*) &dummy_props; - -int __system_properties_init(void) -{ - prop_area *pa; - int s, fd; - unsigned sz; - char *env; - - if(__system_property_area__ != ((void*) &dummy_props)) { - return 0; - } - - env = getenv("ANDROID_PROPERTY_WORKSPACE"); - if (!env) { - return -1; - } - fd = atoi(env); - env = strchr(env, ','); - if (!env) { - return -1; - } - sz = atoi(env + 1); - - pa = mmap(0, sz, PROT_READ, MAP_SHARED, fd, 0); - - if(pa == MAP_FAILED) { - return -1; - } - - if((pa->magic != PROP_AREA_MAGIC) || (pa->version != PROP_AREA_VERSION)) { - munmap(pa, sz); - return -1; - } - - __system_property_area__ = pa; - return 0; -} - -const prop_info *__system_property_find_nth(unsigned n) -{ - prop_area *pa = __system_property_area__; - - if(n >= pa->count) { - return 0; - } else { - return TOC_TO_INFO(pa, pa->toc[n]); - } -} - -const prop_info *__system_property_find(const char *name) -{ - prop_area *pa = __system_property_area__; - unsigned count = pa->count; - unsigned *toc = pa->toc; - unsigned len = strlen(name); - prop_info *pi; - - while(count--) { - unsigned entry = *toc++; - if(TOC_NAME_LEN(entry) != len) continue; - - pi = TOC_TO_INFO(pa, entry); - if(memcmp(name, pi->name, len)) continue; - - return pi; - } - - return 0; -} - -int __system_property_read(const prop_info *pi, char *name, char *value) -{ - unsigned serial, len; - - for(;;) { - serial = pi->serial; - while(SERIAL_DIRTY(serial)) { - __futex_wait(&pi->serial, serial, 0); - serial = pi->serial; - } - len = SERIAL_VALUE_LEN(serial); - memcpy(value, pi->value, len + 1); - if(serial == pi->serial) { - if(name != 0) { - strcpy(name, pi->name); - } - return len; - } - } -} - -int __system_property_get(const char *name, char *value) -{ - const prop_info *pi = __system_property_find(name); - - if(pi != 0) { - return __system_property_read(pi, 0, value); - } else { - value[0] = 0; - return 0; - } -} - -int __system_property_wait(const prop_info *pi) -{ - unsigned n; - if(pi == 0) { - prop_area *pa = __system_property_area__; - n = pa->serial; - do { - __futex_wait(&pa->serial, n, 0); - } while(n == pa->serial); - } else { - n = pi->serial; - do { - __futex_wait(&pi->serial, n, 0); - } while(n == pi->serial); - } - return 0; -} |