From 738be7a3ffec0a4053478d49821c7da9c5fd9ee6 Mon Sep 17 00:00:00 2001 From: Ethan Yonker Date: Wed, 10 Dec 2014 11:40:43 -0600 Subject: Use one mizip for all The new minzip did not compile in older trees due to needing mmap64. For older trees we will just use mmap instead. Remove all files and code pertaining to minzipold. Updater should now build properly in older trees as well. Eliminate use of PLATFORM_VERSION in favor of PLATFORM_SDK_VERSION which should be more consistent and reliable. Change-Id: I38d2b604a73d1b17a2072c7d60e990b81ece0c10 --- minzipold/SysUtil.c | 212 ---------------------------------------------------- 1 file changed, 212 deletions(-) delete mode 100644 minzipold/SysUtil.c (limited to 'minzipold/SysUtil.c') diff --git a/minzipold/SysUtil.c b/minzipold/SysUtil.c deleted file mode 100644 index 31c76d6d4..000000000 --- a/minzipold/SysUtil.c +++ /dev/null @@ -1,212 +0,0 @@ -/* - * Copyright 2006 The Android Open Source Project - * - * System utilities. - */ -#include -#include -#include -#include -#include -#include -#include -#include - -#define LOG_TAG "minzip" -#include "Log.h" -#include "SysUtil.h" - -/* - * Having trouble finding a portable way to get this. sysconf(_SC_PAGE_SIZE) - * seems appropriate, but we don't have that on the device. Some systems - * have getpagesize(2), though the linux man page has some odd cautions. - */ -#define DEFAULT_PAGE_SIZE 4096 - - -/* - * Create an anonymous shared memory segment large enough to hold "length" - * bytes. The actual segment may be larger because mmap() operates on - * page boundaries (usually 4K). - */ -static void* sysCreateAnonShmem(size_t length) -{ - void* ptr; - - ptr = mmap(NULL, length, PROT_READ | PROT_WRITE, - MAP_SHARED | MAP_ANON, -1, 0); - if (ptr == MAP_FAILED) { - LOGW("mmap(%d, RW, SHARED|ANON) failed: %s\n", (int) length, - strerror(errno)); - return NULL; - } - - return ptr; -} - -static int getFileStartAndLength(int fd, off_t *start_, size_t *length_) -{ - off_t start, end; - size_t length; - - assert(start_ != NULL); - assert(length_ != NULL); - - start = lseek(fd, 0L, SEEK_CUR); - end = lseek(fd, 0L, SEEK_END); - (void) lseek(fd, start, SEEK_SET); - - if (start == (off_t) -1 || end == (off_t) -1) { - LOGE("could not determine length of file\n"); - return -1; - } - - length = end - start; - if (length == 0) { - LOGE("file is empty\n"); - return -1; - } - - *start_ = start; - *length_ = length; - - return 0; -} - -/* - * Pull the contents of a file into an new shared memory segment. We grab - * everything from fd's current offset on. - * - * We need to know the length ahead of time so we can allocate a segment - * of sufficient size. - */ -int sysLoadFileInShmem(int fd, MemMapping* pMap) -{ - off_t start; - size_t length, actual; - void* memPtr; - - assert(pMap != NULL); - - if (getFileStartAndLength(fd, &start, &length) < 0) - return -1; - - memPtr = sysCreateAnonShmem(length); - if (memPtr == NULL) - return -1; - - pMap->baseAddr = pMap->addr = memPtr; - pMap->baseLength = pMap->length = length; - - actual = TEMP_FAILURE_RETRY(read(fd, memPtr, length)); - if (actual != length) { - LOGE("only read %d of %d bytes\n", (int) actual, (int) length); - sysReleaseShmem(pMap); - return -1; - } - - return 0; -} - -/* - * Map a file (from fd's current offset) into a shared, read-only memory - * segment. The file offset must be a multiple of the page size. - * - * On success, returns 0 and fills out "pMap". On failure, returns a nonzero - * value and does not disturb "pMap". - */ -int sysMapFileInShmem(int fd, MemMapping* pMap) -{ - off_t start; - size_t length; - void* memPtr; - - assert(pMap != NULL); - - if (getFileStartAndLength(fd, &start, &length) < 0) - return -1; - - memPtr = mmap(NULL, length, PROT_READ, MAP_FILE | MAP_SHARED, fd, start); - if (memPtr == MAP_FAILED) { - LOGW("mmap(%d, R, FILE|SHARED, %d, %d) failed: %s\n", (int) length, - fd, (int) start, strerror(errno)); - return -1; - } - - pMap->baseAddr = pMap->addr = memPtr; - pMap->baseLength = pMap->length = length; - - return 0; -} - -/* - * Map part of a file (from fd's current offset) into a shared, read-only - * memory segment. - * - * On success, returns 0 and fills out "pMap". On failure, returns a nonzero - * value and does not disturb "pMap". - */ -int sysMapFileSegmentInShmem(int fd, off_t start, long length, - MemMapping* pMap) -{ - off_t dummy; - size_t fileLength, actualLength; - off_t actualStart; - int adjust; - void* memPtr; - - assert(pMap != NULL); - - if (getFileStartAndLength(fd, &dummy, &fileLength) < 0) - return -1; - - if (start + length > (long)fileLength) { - LOGW("bad segment: st=%d len=%ld flen=%d\n", - (int) start, length, (int) fileLength); - return -1; - } - - /* adjust to be page-aligned */ - adjust = start % DEFAULT_PAGE_SIZE; - actualStart = start - adjust; - actualLength = length + adjust; - - memPtr = mmap(NULL, actualLength, PROT_READ, MAP_FILE | MAP_SHARED, - fd, actualStart); - if (memPtr == MAP_FAILED) { - LOGW("mmap(%d, R, FILE|SHARED, %d, %d) failed: %s\n", - (int) actualLength, fd, (int) actualStart, strerror(errno)); - return -1; - } - - pMap->baseAddr = memPtr; - pMap->baseLength = actualLength; - pMap->addr = (char*)memPtr + adjust; - pMap->length = length; - - LOGVV("mmap seg (st=%d ln=%d): bp=%p bl=%d ad=%p ln=%d\n", - (int) start, (int) length, - pMap->baseAddr, (int) pMap->baseLength, - pMap->addr, (int) pMap->length); - - return 0; -} - -/* - * Release a memory mapping. - */ -void sysReleaseShmem(MemMapping* pMap) -{ - if (pMap->baseAddr == NULL && pMap->baseLength == 0) - return; - - if (munmap(pMap->baseAddr, pMap->baseLength) < 0) { - LOGW("munmap(%p, %d) failed: %s\n", - pMap->baseAddr, (int)pMap->baseLength, strerror(errno)); - } else { - LOGV("munmap(%p, %d) succeeded\n", pMap->baseAddr, pMap->baseLength); - pMap->baseAddr = NULL; - pMap->baseLength = 0; - } -} - -- cgit v1.2.3