--- /dev/null
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under both the BSD-style license (found in the
+ * LICENSE file in the root directory of this source tree) and the GPLv2 (found
+ * in the COPYING file in the root directory of this source tree).
+ * You may select, at your option, one of the above-listed licenses.
+ */
+
+#if defined (__cplusplus)
+extern "C" {
+#endif
+
+
+/*-****************************************
+* Dependencies
+******************************************/
+#include "util.h" /* note : ensure that platform.h is included first ! */
+#include <stdlib.h> /* malloc, realloc, free */
+#include <stdio.h> /* fprintf */
+#include <time.h> /* clock_t, clock, CLOCKS_PER_SEC, nanosleep */
+#include <errno.h>
+#include <assert.h>
+
+#if defined(_WIN32)
+# include <sys/utime.h> /* utime */
+# include <io.h> /* _chmod */
+#else
+# include <unistd.h> /* chown, stat */
+# if PLATFORM_POSIX_VERSION < 200809L || !defined(st_mtime)
+# include <utime.h> /* utime */
+# else
+# include <fcntl.h> /* AT_FDCWD */
+# include <sys/stat.h> /* utimensat */
+# endif
+#endif
+
+#if defined(_MSC_VER) || defined(__MINGW32__) || defined (__MSVCRT__)
+#include <direct.h> /* needed for _mkdir in windows */
+#endif
+
+#if defined(__linux__) || (PLATFORM_POSIX_VERSION >= 200112L) /* opendir, readdir require POSIX.1-2001 */
+# include <dirent.h> /* opendir, readdir */
+# include <string.h> /* strerror, memcpy */
+#endif /* #ifdef _WIN32 */
+
+/*-****************************************
+* Internal Macros
+******************************************/
+
+/* CONTROL is almost like an assert(), but is never disabled.
+ * It's designed for failures that may happen rarely,
+ * but we don't want to maintain a specific error code path for them,
+ * such as a malloc() returning NULL for example.
+ * Since it's always active, this macro can trigger side effects.
+ */
+#define CONTROL(c) { \
+ if (!(c)) { \
+ UTIL_DISPLAYLEVEL(1, "Error : %s, %i : %s", \
+ __FILE__, __LINE__, #c); \
+ exit(1); \
+} }
+
+/* console log */
+#define UTIL_DISPLAY(...) fprintf(stderr, __VA_ARGS__)
+#define UTIL_DISPLAYLEVEL(l, ...) { if (g_utilDisplayLevel>=l) { UTIL_DISPLAY(__VA_ARGS__); } }
+
+static int g_traceDepth = 0;
+int g_traceFileStat = 0;
+
+#define UTIL_TRACE_CALL(...) \
+ { \
+ if (g_traceFileStat) { \
+ UTIL_DISPLAY("Trace:FileStat: %*s> ", g_traceDepth, ""); \
+ UTIL_DISPLAY(__VA_ARGS__); \
+ UTIL_DISPLAY("\n"); \
+ ++g_traceDepth; \
+ } \
+ }
+
+#define UTIL_TRACE_RET(ret) \
+ { \
+ if (g_traceFileStat) { \
+ --g_traceDepth; \
+ UTIL_DISPLAY("Trace:FileStat: %*s< %d\n", g_traceDepth, "", (ret)); \
+ } \
+ }
+
+/* A modified version of realloc().
+ * If UTIL_realloc() fails the original block is freed.
+ */
+UTIL_STATIC void* UTIL_realloc(void *ptr, size_t size)
+{
+ void *newptr = realloc(ptr, size);
+ if (newptr) return newptr;
+ free(ptr);
+ return NULL;
+}
+
+#if defined(_MSC_VER)
+ #define chmod _chmod
+#endif
+
+#ifndef ZSTD_HAVE_FCHMOD
+#if PLATFORM_POSIX_VERSION >= 199309L
+#define ZSTD_HAVE_FCHMOD
+#endif
+#endif
+
+#ifndef ZSTD_HAVE_FCHOWN
+#if PLATFORM_POSIX_VERSION >= 200809L
+#define ZSTD_HAVE_FCHOWN
+#endif
+#endif
+
+/*-****************************************
+* Console log
+******************************************/
+int g_utilDisplayLevel;
+
+int UTIL_requireUserConfirmation(const char* prompt, const char* abortMsg,
+ const char* acceptableLetters, int hasStdinInput) {
+ int ch, result;
+
+ if (hasStdinInput) {
+ UTIL_DISPLAY("stdin is an input - not proceeding.\n");
+ return 1;
+ }
+
+ UTIL_DISPLAY("%s", prompt);
+ ch = getchar();
+ result = 0;
+ if (strchr(acceptableLetters, ch) == NULL) {
+ UTIL_DISPLAY("%s \n", abortMsg);
+ result = 1;
+ }
+ /* flush the rest */
+ while ((ch!=EOF) && (ch!='\n'))
+ ch = getchar();
+ return result;
+}
+
+
+/*-*************************************
+* Constants
+***************************************/
+#define LIST_SIZE_INCREASE (8*1024)
+#define MAX_FILE_OF_FILE_NAMES_SIZE (1<<20)*50
+
+
+/*-*************************************
+* Functions
+***************************************/
+
+void UTIL_traceFileStat(void)
+{
+ g_traceFileStat = 1;
+}
+
+int UTIL_fstat(const int fd, const char* filename, stat_t* statbuf)
+{
+ int ret;
+ UTIL_TRACE_CALL("UTIL_stat(%d, %s)", fd, filename);
+#if defined(_MSC_VER)
+ if (fd >= 0) {
+ ret = !_fstat64(fd, statbuf);
+ } else {
+ ret = !_stat64(filename, statbuf);
+ }
+#elif defined(__MINGW32__) && defined (__MSVCRT__)
+ if (fd >= 0) {
+ ret = !_fstati64(fd, statbuf);
+ } else {
+ ret = !_stati64(filename, statbuf);
+ }
+#else
+ if (fd >= 0) {
+ ret = !fstat(fd, statbuf);
+ } else {
+ ret = !stat(filename, statbuf);
+ }
+#endif
+ UTIL_TRACE_RET(ret);
+ return ret;
+}
+
+int UTIL_stat(const char* filename, stat_t* statbuf)
+{
+ return UTIL_fstat(-1, filename, statbuf);
+}
+
+int UTIL_isRegularFile(const char* infilename)
+{
+ stat_t statbuf;
+ int ret;
+ UTIL_TRACE_CALL("UTIL_isRegularFile(%s)", infilename);
+ ret = UTIL_stat(infilename, &statbuf) && UTIL_isRegularFileStat(&statbuf);
+ UTIL_TRACE_RET(ret);
+ return ret;
+}
+
+int UTIL_isRegularFileStat(const stat_t* statbuf)
+{
+#if defined(_MSC_VER)
+ return (statbuf->st_mode & S_IFREG) != 0;
+#else
+ return S_ISREG(statbuf->st_mode) != 0;
+#endif
+}
+
+/* like chmod, but avoid changing permission of /dev/null */
+int UTIL_chmod(char const* filename, const stat_t* statbuf, mode_t permissions)
+{
+ return UTIL_fchmod(-1, filename, statbuf, permissions);
+}
+
+int UTIL_fchmod(const int fd, char const* filename, const stat_t* statbuf, mode_t permissions)
+{
+ stat_t localStatBuf;
+ UTIL_TRACE_CALL("UTIL_chmod(%s, %#4o)", filename, (unsigned)permissions);
+ if (statbuf == NULL) {
+ if (!UTIL_fstat(fd, filename, &localStatBuf)) {
+ UTIL_TRACE_RET(0);
+ return 0;
+ }
+ statbuf = &localStatBuf;
+ }
+ if (!UTIL_isRegularFileStat(statbuf)) {
+ UTIL_TRACE_RET(0);
+ return 0; /* pretend success, but don't change anything */
+ }
+#ifdef ZSTD_HAVE_FCHMOD
+ if (fd >= 0) {
+ int ret;
+ UTIL_TRACE_CALL("fchmod");
+ ret = fchmod(fd, permissions);
+ UTIL_TRACE_RET(ret);
+ UTIL_TRACE_RET(ret);
+ return ret;
+ } else
+#endif
+ {
+ int ret;
+ UTIL_TRACE_CALL("chmod");
+ ret = chmod(filename, permissions);
+ UTIL_TRACE_RET(ret);
+ UTIL_TRACE_RET(ret);
+ return ret;
+ }
+}
+
+/* set access and modification times */
+int UTIL_utime(const char* filename, const stat_t *statbuf)
+{
+ int ret;
+ UTIL_TRACE_CALL("UTIL_utime(%s)", filename);
+ /* We check that st_mtime is a macro here in order to give us confidence
+ * that struct stat has a struct timespec st_mtim member. We need this
+ * check because there are some platforms that claim to be POSIX 2008
+ * compliant but which do not have st_mtim... */
+#if (PLATFORM_POSIX_VERSION >= 200809L) && defined(st_mtime)
+ {
+ /* (atime, mtime) */
+ struct timespec timebuf[2] = { {0, UTIME_NOW} };
+ timebuf[1] = statbuf->st_mtim;
+ ret = utimensat(AT_FDCWD, filename, timebuf, 0);
+ }
+#else
+ {
+ struct utimbuf timebuf;
+ timebuf.actime = time(NULL);
+ timebuf.modtime = statbuf->st_mtime;
+ ret = utime(filename, &timebuf);
+ }
+#endif
+ errno = 0;
+ UTIL_TRACE_RET(ret);
+ return ret;
+}
+
+int UTIL_setFileStat(const char *filename, const stat_t *statbuf)
+{
+ return UTIL_setFDStat(-1, filename, statbuf);
+}
+
+int UTIL_setFDStat(const int fd, const char *filename, const stat_t *statbuf)
+{
+ int res = 0;
+ stat_t curStatBuf;
+ UTIL_TRACE_CALL("UTIL_setFileStat(%d, %s)", fd, filename);
+
+ if (!UTIL_fstat(fd, filename, &curStatBuf) || !UTIL_isRegularFileStat(&curStatBuf)) {
+ UTIL_TRACE_RET(-1);
+ return -1;
+ }
+
+ /* Mimic gzip's behavior:
+ *
+ * "Change the group first, then the permissions, then the owner.
+ * That way, the permissions will be correct on systems that allow
+ * users to give away files, without introducing a security hole.
+ * Security depends on permissions not containing the setuid or
+ * setgid bits." */
+
+#if !defined(_WIN32)
+#ifdef ZSTD_HAVE_FCHOWN
+ if (fd >= 0) {
+ res += fchown(fd, -1, statbuf->st_gid); /* Apply group ownership */
+ } else
+#endif
+ {
+ res += chown(filename, -1, statbuf->st_gid); /* Apply group ownership */
+ }
+#endif
+
+ res += UTIL_fchmod(fd, filename, &curStatBuf, statbuf->st_mode & 0777); /* Copy file permissions */
+
+#if !defined(_WIN32)
+#ifdef ZSTD_HAVE_FCHOWN
+ if (fd >= 0) {
+ res += fchown(fd, statbuf->st_uid, -1); /* Apply user ownership */
+ } else
+#endif
+ {
+ res += chown(filename, statbuf->st_uid, -1); /* Apply user ownership */
+ }
+#endif
+
+ errno = 0;
+ UTIL_TRACE_RET(-res);
+ return -res; /* number of errors is returned */
+}
+
+int UTIL_isDirectory(const char* infilename)
+{
+ stat_t statbuf;
+ int ret;
+ UTIL_TRACE_CALL("UTIL_isDirectory(%s)", infilename);
+ ret = UTIL_stat(infilename, &statbuf) && UTIL_isDirectoryStat(&statbuf);
+ UTIL_TRACE_RET(ret);
+ return ret;
+}
+
+int UTIL_isDirectoryStat(const stat_t* statbuf)
+{
+ int ret;
+ UTIL_TRACE_CALL("UTIL_isDirectoryStat()");
+#if defined(_MSC_VER)
+ ret = (statbuf->st_mode & _S_IFDIR) != 0;
+#else
+ ret = S_ISDIR(statbuf->st_mode) != 0;
+#endif
+ UTIL_TRACE_RET(ret);
+ return ret;
+}
+
+int UTIL_compareStr(const void *p1, const void *p2) {
+ return strcmp(* (char * const *) p1, * (char * const *) p2);
+}
+
+int UTIL_isSameFile(const char* fName1, const char* fName2)
+{
+ int ret;
+ assert(fName1 != NULL); assert(fName2 != NULL);
+ UTIL_TRACE_CALL("UTIL_isSameFile(%s, %s)", fName1, fName2);
+#if defined(_MSC_VER) || defined(_WIN32)
+ /* note : Visual does not support file identification by inode.
+ * inode does not work on Windows, even with a posix layer, like msys2.
+ * The following work-around is limited to detecting exact name repetition only,
+ * aka `filename` is considered different from `subdir/../filename` */
+ ret = !strcmp(fName1, fName2);
+#else
+ { stat_t file1Stat;
+ stat_t file2Stat;
+ ret = UTIL_stat(fName1, &file1Stat)
+ && UTIL_stat(fName2, &file2Stat)
+ && UTIL_isSameFileStat(fName1, fName2, &file1Stat, &file2Stat);
+ }
+#endif
+ UTIL_TRACE_RET(ret);
+ return ret;
+}
+
+int UTIL_isSameFileStat(
+ const char* fName1, const char* fName2,
+ const stat_t* file1Stat, const stat_t* file2Stat)
+{
+ int ret;
+ assert(fName1 != NULL); assert(fName2 != NULL);
+ UTIL_TRACE_CALL("UTIL_isSameFileStat(%s, %s)", fName1, fName2);
+#if defined(_MSC_VER) || defined(_WIN32)
+ /* note : Visual does not support file identification by inode.
+ * inode does not work on Windows, even with a posix layer, like msys2.
+ * The following work-around is limited to detecting exact name repetition only,
+ * aka `filename` is considered different from `subdir/../filename` */
+ (void)file1Stat;
+ (void)file2Stat;
+ ret = !strcmp(fName1, fName2);
+#else
+ {
+ ret = (file1Stat->st_dev == file2Stat->st_dev)
+ && (file1Stat->st_ino == file2Stat->st_ino);
+ }
+#endif
+ UTIL_TRACE_RET(ret);
+ return ret;
+}
+
+/* UTIL_isFIFO : distinguish named pipes */
+int UTIL_isFIFO(const char* infilename)
+{
+ UTIL_TRACE_CALL("UTIL_isFIFO(%s)", infilename);
+/* macro guards, as defined in : https://linux.die.net/man/2/lstat */
+#if PLATFORM_POSIX_VERSION >= 200112L
+ {
+ stat_t statbuf;
+ if (UTIL_stat(infilename, &statbuf) && UTIL_isFIFOStat(&statbuf)) {
+ UTIL_TRACE_RET(1);
+ return 1;
+ }
+ }
+#endif
+ (void)infilename;
+ UTIL_TRACE_RET(0);
+ return 0;
+}
+
+/* UTIL_isFIFO : distinguish named pipes */
+int UTIL_isFIFOStat(const stat_t* statbuf)
+{
+/* macro guards, as defined in : https://linux.die.net/man/2/lstat */
+#if PLATFORM_POSIX_VERSION >= 200112L
+ if (S_ISFIFO(statbuf->st_mode)) return 1;
+#endif
+ (void)statbuf;
+ return 0;
+}
+
+/* UTIL_isBlockDevStat : distinguish named pipes */
+int UTIL_isBlockDevStat(const stat_t* statbuf)
+{
+/* macro guards, as defined in : https://linux.die.net/man/2/lstat */
+#if PLATFORM_POSIX_VERSION >= 200112L
+ if (S_ISBLK(statbuf->st_mode)) return 1;
+#endif
+ (void)statbuf;
+ return 0;
+}
+
+int UTIL_isLink(const char* infilename)
+{
+ UTIL_TRACE_CALL("UTIL_isLink(%s)", infilename);
+/* macro guards, as defined in : https://linux.die.net/man/2/lstat */
+#if PLATFORM_POSIX_VERSION >= 200112L
+ {
+ stat_t statbuf;
+ int const r = lstat(infilename, &statbuf);
+ if (!r && S_ISLNK(statbuf.st_mode)) {
+ UTIL_TRACE_RET(1);
+ return 1;
+ }
+ }
+#endif
+ (void)infilename;
+ UTIL_TRACE_RET(0);
+ return 0;
+}
+
+static int g_fakeStdinIsConsole = 0;
+static int g_fakeStderrIsConsole = 0;
+static int g_fakeStdoutIsConsole = 0;
+
+int UTIL_isConsole(FILE* file)
+{
+ int ret;
+ UTIL_TRACE_CALL("UTIL_isConsole(%d)", fileno(file));
+ if (file == stdin && g_fakeStdinIsConsole)
+ ret = 1;
+ else if (file == stderr && g_fakeStderrIsConsole)
+ ret = 1;
+ else if (file == stdout && g_fakeStdoutIsConsole)
+ ret = 1;
+ else
+ ret = IS_CONSOLE(file);
+ UTIL_TRACE_RET(ret);
+ return ret;
+}
+
+void UTIL_fakeStdinIsConsole(void)
+{
+ g_fakeStdinIsConsole = 1;
+}
+void UTIL_fakeStdoutIsConsole(void)
+{
+ g_fakeStdoutIsConsole = 1;
+}
+void UTIL_fakeStderrIsConsole(void)
+{
+ g_fakeStderrIsConsole = 1;
+}
+
+U64 UTIL_getFileSize(const char* infilename)
+{
+ stat_t statbuf;
+ UTIL_TRACE_CALL("UTIL_getFileSize(%s)", infilename);
+ if (!UTIL_stat(infilename, &statbuf)) {
+ UTIL_TRACE_RET(-1);
+ return UTIL_FILESIZE_UNKNOWN;
+ }
+ {
+ U64 const size = UTIL_getFileSizeStat(&statbuf);
+ UTIL_TRACE_RET((int)size);
+ return size;
+ }
+}
+
+U64 UTIL_getFileSizeStat(const stat_t* statbuf)
+{
+ if (!UTIL_isRegularFileStat(statbuf)) return UTIL_FILESIZE_UNKNOWN;
+#if defined(_MSC_VER)
+ if (!(statbuf->st_mode & S_IFREG)) return UTIL_FILESIZE_UNKNOWN;
+#elif defined(__MINGW32__) && defined (__MSVCRT__)
+ if (!(statbuf->st_mode & S_IFREG)) return UTIL_FILESIZE_UNKNOWN;
+#else
+ if (!S_ISREG(statbuf->st_mode)) return UTIL_FILESIZE_UNKNOWN;
+#endif
+ return (U64)statbuf->st_size;
+}
+
+UTIL_HumanReadableSize_t UTIL_makeHumanReadableSize(U64 size)
+{
+ UTIL_HumanReadableSize_t hrs;
+
+ if (g_utilDisplayLevel > 3) {
+ /* In verbose mode, do not scale sizes down, except in the case of
+ * values that exceed the integral precision of a double. */
+ if (size >= (1ull << 53)) {
+ hrs.value = (double)size / (1ull << 20);
+ hrs.suffix = " MiB";
+ /* At worst, a double representation of a maximal size will be
+ * accurate to better than tens of kilobytes. */
+ hrs.precision = 2;
+ } else {
+ hrs.value = (double)size;
+ hrs.suffix = " B";
+ hrs.precision = 0;
+ }
+ } else {
+ /* In regular mode, scale sizes down and use suffixes. */
+ if (size >= (1ull << 60)) {
+ hrs.value = (double)size / (1ull << 60);
+ hrs.suffix = " EiB";
+ } else if (size >= (1ull << 50)) {
+ hrs.value = (double)size / (1ull << 50);
+ hrs.suffix = " PiB";
+ } else if (size >= (1ull << 40)) {
+ hrs.value = (double)size / (1ull << 40);
+ hrs.suffix = " TiB";
+ } else if (size >= (1ull << 30)) {
+ hrs.value = (double)size / (1ull << 30);
+ hrs.suffix = " GiB";
+ } else if (size >= (1ull << 20)) {
+ hrs.value = (double)size / (1ull << 20);
+ hrs.suffix = " MiB";
+ } else if (size >= (1ull << 10)) {
+ hrs.value = (double)size / (1ull << 10);
+ hrs.suffix = " KiB";
+ } else {
+ hrs.value = (double)size;
+ hrs.suffix = " B";
+ }
+
+ if (hrs.value >= 100 || (U64)hrs.value == size) {
+ hrs.precision = 0;
+ } else if (hrs.value >= 10) {
+ hrs.precision = 1;
+ } else if (hrs.value > 1) {
+ hrs.precision = 2;
+ } else {
+ hrs.precision = 3;
+ }
+ }
+
+ return hrs;
+}
+
+U64 UTIL_getTotalFileSize(const char* const * fileNamesTable, unsigned nbFiles)
+{
+ U64 total = 0;
+ unsigned n;
+ UTIL_TRACE_CALL("UTIL_getTotalFileSize(%u)", nbFiles);
+ for (n=0; n<nbFiles; n++) {
+ U64 const size = UTIL_getFileSize(fileNamesTable[n]);
+ if (size == UTIL_FILESIZE_UNKNOWN) {
+ UTIL_TRACE_RET(-1);
+ return UTIL_FILESIZE_UNKNOWN;
+ }
+ total += size;
+ }
+ UTIL_TRACE_RET((int)total);
+ return total;
+}
+
+
+/* condition : @file must be valid, and not have reached its end.
+ * @return : length of line written into @buf, ended with `\0` instead of '\n',
+ * or 0, if there is no new line */
+static size_t readLineFromFile(char* buf, size_t len, FILE* file)
+{
+ assert(!feof(file));
+ if ( fgets(buf, (int) len, file) == NULL ) return 0;
+ { size_t linelen = strlen(buf);
+ if (strlen(buf)==0) return 0;
+ if (buf[linelen-1] == '\n') linelen--;
+ buf[linelen] = '\0';
+ return linelen+1;
+ }
+}
+
+/* Conditions :
+ * size of @inputFileName file must be < @dstCapacity
+ * @dst must be initialized
+ * @return : nb of lines
+ * or -1 if there's an error
+ */
+static int
+readLinesFromFile(void* dst, size_t dstCapacity,
+ const char* inputFileName)
+{
+ int nbFiles = 0;
+ size_t pos = 0;
+ char* const buf = (char*)dst;
+ FILE* const inputFile = fopen(inputFileName, "r");
+
+ assert(dst != NULL);
+
+ if(!inputFile) {
+ if (g_utilDisplayLevel >= 1) perror("zstd:util:readLinesFromFile");
+ return -1;
+ }
+
+ while ( !feof(inputFile) ) {
+ size_t const lineLength = readLineFromFile(buf+pos, dstCapacity-pos, inputFile);
+ if (lineLength == 0) break;
+ assert(pos + lineLength <= dstCapacity); /* '=' for inputFile not terminated with '\n' */
+ pos += lineLength;
+ ++nbFiles;
+ }
+
+ CONTROL( fclose(inputFile) == 0 );
+
+ return nbFiles;
+}
+
+/*Note: buf is not freed in case function successfully created table because filesTable->fileNames[0] = buf*/
+FileNamesTable*
+UTIL_createFileNamesTable_fromFileName(const char* inputFileName)
+{
+ size_t nbFiles = 0;
+ char* buf;
+ size_t bufSize;
+ size_t pos = 0;
+ stat_t statbuf;
+
+ if (!UTIL_stat(inputFileName, &statbuf) || !UTIL_isRegularFileStat(&statbuf))
+ return NULL;
+
+ { U64 const inputFileSize = UTIL_getFileSizeStat(&statbuf);
+ if(inputFileSize > MAX_FILE_OF_FILE_NAMES_SIZE)
+ return NULL;
+ bufSize = (size_t)(inputFileSize + 1); /* (+1) to add '\0' at the end of last filename */
+ }
+
+ buf = (char*) malloc(bufSize);
+ CONTROL( buf != NULL );
+
+ { int const ret_nbFiles = readLinesFromFile(buf, bufSize, inputFileName);
+
+ if (ret_nbFiles <= 0) {
+ free(buf);
+ return NULL;
+ }
+ nbFiles = (size_t)ret_nbFiles;
+ }
+
+ { const char** filenamesTable = (const char**) malloc(nbFiles * sizeof(*filenamesTable));
+ CONTROL(filenamesTable != NULL);
+
+ { size_t fnb;
+ for (fnb = 0, pos = 0; fnb < nbFiles; fnb++) {
+ filenamesTable[fnb] = buf+pos;
+ pos += strlen(buf+pos)+1; /* +1 for the finishing `\0` */
+ } }
+ assert(pos <= bufSize);
+
+ return UTIL_assembleFileNamesTable(filenamesTable, nbFiles, buf);
+ }
+}
+
+static FileNamesTable*
+UTIL_assembleFileNamesTable2(const char** filenames, size_t tableSize, size_t tableCapacity, char* buf)
+{
+ FileNamesTable* const table = (FileNamesTable*) malloc(sizeof(*table));
+ CONTROL(table != NULL);
+ table->fileNames = filenames;
+ table->buf = buf;
+ table->tableSize = tableSize;
+ table->tableCapacity = tableCapacity;
+ return table;
+}
+
+FileNamesTable*
+UTIL_assembleFileNamesTable(const char** filenames, size_t tableSize, char* buf)
+{
+ return UTIL_assembleFileNamesTable2(filenames, tableSize, tableSize, buf);
+}
+
+void UTIL_freeFileNamesTable(FileNamesTable* table)
+{
+ if (table==NULL) return;
+ free((void*)table->fileNames);
+ free(table->buf);
+ free(table);
+}
+
+FileNamesTable* UTIL_allocateFileNamesTable(size_t tableSize)
+{
+ const char** const fnTable = (const char**)malloc(tableSize * sizeof(*fnTable));
+ FileNamesTable* fnt;
+ if (fnTable==NULL) return NULL;
+ fnt = UTIL_assembleFileNamesTable(fnTable, tableSize, NULL);
+ fnt->tableSize = 0; /* the table is empty */
+ return fnt;
+}
+
+int UTIL_searchFileNamesTable(FileNamesTable* table, char const* name) {
+ size_t i;
+ for(i=0 ;i < table->tableSize; i++) {
+ if(!strcmp(table->fileNames[i], name)) {
+ return (int)i;
+ }
+ }
+ return -1;
+}
+
+void UTIL_refFilename(FileNamesTable* fnt, const char* filename)
+{
+ assert(fnt->tableSize < fnt->tableCapacity);
+ fnt->fileNames[fnt->tableSize] = filename;
+ fnt->tableSize++;
+}
+
+static size_t getTotalTableSize(FileNamesTable* table)
+{
+ size_t fnb = 0, totalSize = 0;
+ for(fnb = 0 ; fnb < table->tableSize && table->fileNames[fnb] ; ++fnb) {
+ totalSize += strlen(table->fileNames[fnb]) + 1; /* +1 to add '\0' at the end of each fileName */
+ }
+ return totalSize;
+}
+
+FileNamesTable*
+UTIL_mergeFileNamesTable(FileNamesTable* table1, FileNamesTable* table2)
+{
+ unsigned newTableIdx = 0;
+ size_t pos = 0;
+ size_t newTotalTableSize;
+ char* buf;
+
+ FileNamesTable* const newTable = UTIL_assembleFileNamesTable(NULL, 0, NULL);
+ CONTROL( newTable != NULL );
+
+ newTotalTableSize = getTotalTableSize(table1) + getTotalTableSize(table2);
+
+ buf = (char*) calloc(newTotalTableSize, sizeof(*buf));
+ CONTROL ( buf != NULL );
+
+ newTable->buf = buf;
+ newTable->tableSize = table1->tableSize + table2->tableSize;
+ newTable->fileNames = (const char **) calloc(newTable->tableSize, sizeof(*(newTable->fileNames)));
+ CONTROL ( newTable->fileNames != NULL );
+
+ { unsigned idx1;
+ for( idx1=0 ; (idx1 < table1->tableSize) && table1->fileNames[idx1] && (pos < newTotalTableSize); ++idx1, ++newTableIdx) {
+ size_t const curLen = strlen(table1->fileNames[idx1]);
+ memcpy(buf+pos, table1->fileNames[idx1], curLen);
+ assert(newTableIdx <= newTable->tableSize);
+ newTable->fileNames[newTableIdx] = buf+pos;
+ pos += curLen+1;
+ } }
+
+ { unsigned idx2;
+ for( idx2=0 ; (idx2 < table2->tableSize) && table2->fileNames[idx2] && (pos < newTotalTableSize) ; ++idx2, ++newTableIdx) {
+ size_t const curLen = strlen(table2->fileNames[idx2]);
+ memcpy(buf+pos, table2->fileNames[idx2], curLen);
+ assert(newTableIdx < newTable->tableSize);
+ newTable->fileNames[newTableIdx] = buf+pos;
+ pos += curLen+1;
+ } }
+ assert(pos <= newTotalTableSize);
+ newTable->tableSize = newTableIdx;
+
+ UTIL_freeFileNamesTable(table1);
+ UTIL_freeFileNamesTable(table2);
+
+ return newTable;
+}
+
+#ifdef _WIN32
+static int UTIL_prepareFileList(const char* dirName,
+ char** bufStart, size_t* pos,
+ char** bufEnd, int followLinks)
+{
+ char* path;
+ size_t dirLength, pathLength;
+ int nbFiles = 0;
+ WIN32_FIND_DATAA cFile;
+ HANDLE hFile;
+
+ dirLength = strlen(dirName);
+ path = (char*) malloc(dirLength + 3);
+ if (!path) return 0;
+
+ memcpy(path, dirName, dirLength);
+ path[dirLength] = '\\';
+ path[dirLength+1] = '*';
+ path[dirLength+2] = 0;
+
+ hFile=FindFirstFileA(path, &cFile);
+ if (hFile == INVALID_HANDLE_VALUE) {
+ UTIL_DISPLAYLEVEL(1, "Cannot open directory '%s'\n", dirName);
+ return 0;
+ }
+ free(path);
+
+ do {
+ size_t const fnameLength = strlen(cFile.cFileName);
+ path = (char*) malloc(dirLength + fnameLength + 2);
+ if (!path) { FindClose(hFile); return 0; }
+ memcpy(path, dirName, dirLength);
+ path[dirLength] = '\\';
+ memcpy(path+dirLength+1, cFile.cFileName, fnameLength);
+ pathLength = dirLength+1+fnameLength;
+ path[pathLength] = 0;
+ if (cFile.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
+ if ( strcmp (cFile.cFileName, "..") == 0
+ || strcmp (cFile.cFileName, ".") == 0 )
+ continue;
+ /* Recursively call "UTIL_prepareFileList" with the new path. */
+ nbFiles += UTIL_prepareFileList(path, bufStart, pos, bufEnd, followLinks);
+ if (*bufStart == NULL) { free(path); FindClose(hFile); return 0; }
+ } else if ( (cFile.dwFileAttributes & FILE_ATTRIBUTE_NORMAL)
+ || (cFile.dwFileAttributes & FILE_ATTRIBUTE_ARCHIVE)
+ || (cFile.dwFileAttributes & FILE_ATTRIBUTE_COMPRESSED) ) {
+ if (*bufStart + *pos + pathLength >= *bufEnd) {
+ ptrdiff_t const newListSize = (*bufEnd - *bufStart) + LIST_SIZE_INCREASE;
+ *bufStart = (char*)UTIL_realloc(*bufStart, newListSize);
+ if (*bufStart == NULL) { free(path); FindClose(hFile); return 0; }
+ *bufEnd = *bufStart + newListSize;
+ }
+ if (*bufStart + *pos + pathLength < *bufEnd) {
+ memcpy(*bufStart + *pos, path, pathLength+1 /* include final \0 */);
+ *pos += pathLength + 1;
+ nbFiles++;
+ } }
+ free(path);
+ } while (FindNextFileA(hFile, &cFile));
+
+ FindClose(hFile);
+ return nbFiles;
+}
+
+#elif defined(__linux__) || (PLATFORM_POSIX_VERSION >= 200112L) /* opendir, readdir require POSIX.1-2001 */
+
+static int UTIL_prepareFileList(const char *dirName,
+ char** bufStart, size_t* pos,
+ char** bufEnd, int followLinks)
+{
+ DIR* dir;
+ struct dirent * entry;
+ size_t dirLength;
+ int nbFiles = 0;
+
+ if (!(dir = opendir(dirName))) {
+ UTIL_DISPLAYLEVEL(1, "Cannot open directory '%s': %s\n", dirName, strerror(errno));
+ return 0;
+ }
+
+ dirLength = strlen(dirName);
+ errno = 0;
+ while ((entry = readdir(dir)) != NULL) {
+ char* path;
+ size_t fnameLength, pathLength;
+ if (strcmp (entry->d_name, "..") == 0 ||
+ strcmp (entry->d_name, ".") == 0) continue;
+ fnameLength = strlen(entry->d_name);
+ path = (char*) malloc(dirLength + fnameLength + 2);
+ if (!path) { closedir(dir); return 0; }
+ memcpy(path, dirName, dirLength);
+
+ path[dirLength] = '/';
+ memcpy(path+dirLength+1, entry->d_name, fnameLength);
+ pathLength = dirLength+1+fnameLength;
+ path[pathLength] = 0;
+
+ if (!followLinks && UTIL_isLink(path)) {
+ UTIL_DISPLAYLEVEL(2, "Warning : %s is a symbolic link, ignoring\n", path);
+ free(path);
+ continue;
+ }
+
+ if (UTIL_isDirectory(path)) {
+ nbFiles += UTIL_prepareFileList(path, bufStart, pos, bufEnd, followLinks); /* Recursively call "UTIL_prepareFileList" with the new path. */
+ if (*bufStart == NULL) { free(path); closedir(dir); return 0; }
+ } else {
+ if (*bufStart + *pos + pathLength >= *bufEnd) {
+ ptrdiff_t newListSize = (*bufEnd - *bufStart) + LIST_SIZE_INCREASE;
+ assert(newListSize >= 0);
+ *bufStart = (char*)UTIL_realloc(*bufStart, (size_t)newListSize);
+ if (*bufStart != NULL) {
+ *bufEnd = *bufStart + newListSize;
+ } else {
+ free(path); closedir(dir); return 0;
+ }
+ }
+ if (*bufStart + *pos + pathLength < *bufEnd) {
+ memcpy(*bufStart + *pos, path, pathLength + 1); /* with final \0 */
+ *pos += pathLength + 1;
+ nbFiles++;
+ } }
+ free(path);
+ errno = 0; /* clear errno after UTIL_isDirectory, UTIL_prepareFileList */
+ }
+
+ if (errno != 0) {
+ UTIL_DISPLAYLEVEL(1, "readdir(%s) error: %s \n", dirName, strerror(errno));
+ free(*bufStart);
+ *bufStart = NULL;
+ }
+ closedir(dir);
+ return nbFiles;
+}
+
+#else
+
+static int UTIL_prepareFileList(const char *dirName,
+ char** bufStart, size_t* pos,
+ char** bufEnd, int followLinks)
+{
+ (void)bufStart; (void)bufEnd; (void)pos; (void)followLinks;
+ UTIL_DISPLAYLEVEL(1, "Directory %s ignored (compiled without _WIN32 or _POSIX_C_SOURCE) \n", dirName);
+ return 0;
+}
+
+#endif /* #ifdef _WIN32 */
+
+int UTIL_isCompressedFile(const char *inputName, const char *extensionList[])
+{
+ const char* ext = UTIL_getFileExtension(inputName);
+ while(*extensionList!=NULL)
+ {
+ const int isCompressedExtension = strcmp(ext,*extensionList);
+ if(isCompressedExtension==0)
+ return 1;
+ ++extensionList;
+ }
+ return 0;
+}
+
+/*Utility function to get file extension from file */
+const char* UTIL_getFileExtension(const char* infilename)
+{
+ const char* extension = strrchr(infilename, '.');
+ if(!extension || extension==infilename) return "";
+ return extension;
+}
+
+static int pathnameHas2Dots(const char *pathname)
+{
+ /* We need to figure out whether any ".." present in the path is a whole
+ * path token, which is the case if it is bordered on both sides by either
+ * the beginning/end of the path or by a directory separator.
+ */
+ const char *needle = pathname;
+ while (1) {
+ needle = strstr(needle, "..");
+
+ if (needle == NULL) {
+ return 0;
+ }
+
+ if ((needle == pathname || needle[-1] == PATH_SEP)
+ && (needle[2] == '\0' || needle[2] == PATH_SEP)) {
+ return 1;
+ }
+
+ /* increment so we search for the next match */
+ needle++;
+ };
+ return 0;
+}
+
+static int isFileNameValidForMirroredOutput(const char *filename)
+{
+ return !pathnameHas2Dots(filename);
+}
+
+
+#define DIR_DEFAULT_MODE 0755
+static mode_t getDirMode(const char *dirName)
+{
+ stat_t st;
+ if (!UTIL_stat(dirName, &st)) {
+ UTIL_DISPLAY("zstd: failed to get DIR stats %s: %s\n", dirName, strerror(errno));
+ return DIR_DEFAULT_MODE;
+ }
+ if (!UTIL_isDirectoryStat(&st)) {
+ UTIL_DISPLAY("zstd: expected directory: %s\n", dirName);
+ return DIR_DEFAULT_MODE;
+ }
+ return st.st_mode;
+}
+
+static int makeDir(const char *dir, mode_t mode)
+{
+#if defined(_MSC_VER) || defined(__MINGW32__) || defined (__MSVCRT__)
+ int ret = _mkdir(dir);
+ (void) mode;
+#else
+ int ret = mkdir(dir, mode);
+#endif
+ if (ret != 0) {
+ if (errno == EEXIST)
+ return 0;
+ UTIL_DISPLAY("zstd: failed to create DIR %s: %s\n", dir, strerror(errno));
+ }
+ return ret;
+}
+
+/* this function requires a mutable input string */
+static void convertPathnameToDirName(char *pathname)
+{
+ size_t len = 0;
+ char* pos = NULL;
+ /* get dir name from pathname similar to 'dirname()' */
+ assert(pathname != NULL);
+
+ /* remove trailing '/' chars */
+ len = strlen(pathname);
+ assert(len > 0);
+ while (pathname[len] == PATH_SEP) {
+ pathname[len] = '\0';
+ len--;
+ }
+ if (len == 0) return;
+
+ /* if input is a single file, return '.' instead. i.e.
+ * "xyz/abc/file.txt" => "xyz/abc"
+ "./file.txt" => "."
+ "file.txt" => "."
+ */
+ pos = strrchr(pathname, PATH_SEP);
+ if (pos == NULL) {
+ pathname[0] = '.';
+ pathname[1] = '\0';
+ } else {
+ *pos = '\0';
+ }
+}
+
+/* pathname must be valid */
+static const char* trimLeadingRootChar(const char *pathname)
+{
+ assert(pathname != NULL);
+ if (pathname[0] == PATH_SEP)
+ return pathname + 1;
+ return pathname;
+}
+
+/* pathname must be valid */
+static const char* trimLeadingCurrentDirConst(const char *pathname)
+{
+ assert(pathname != NULL);
+ if ((pathname[0] == '.') && (pathname[1] == PATH_SEP))
+ return pathname + 2;
+ return pathname;
+}
+
+static char*
+trimLeadingCurrentDir(char *pathname)
+{
+ /* 'union charunion' can do const-cast without compiler warning */
+ union charunion {
+ char *chr;
+ const char* cchr;
+ } ptr;
+ ptr.cchr = trimLeadingCurrentDirConst(pathname);
+ return ptr.chr;
+}
+
+/* remove leading './' or '/' chars here */
+static const char * trimPath(const char *pathname)
+{
+ return trimLeadingRootChar(
+ trimLeadingCurrentDirConst(pathname));
+}
+
+static char* mallocAndJoin2Dir(const char *dir1, const char *dir2)
+{
+ assert(dir1 != NULL && dir2 != NULL);
+ { const size_t dir1Size = strlen(dir1);
+ const size_t dir2Size = strlen(dir2);
+ char *outDirBuffer, *buffer;
+
+ outDirBuffer = (char *) malloc(dir1Size + dir2Size + 2);
+ CONTROL(outDirBuffer != NULL);
+
+ memcpy(outDirBuffer, dir1, dir1Size);
+ outDirBuffer[dir1Size] = '\0';
+
+ if (dir2[0] == '.')
+ return outDirBuffer;
+
+ buffer = outDirBuffer + dir1Size;
+ if (dir1Size > 0 && *(buffer - 1) != PATH_SEP) {
+ *buffer = PATH_SEP;
+ buffer++;
+ }
+ memcpy(buffer, dir2, dir2Size);
+ buffer[dir2Size] = '\0';
+
+ return outDirBuffer;
+ }
+}
+
+/* this function will return NULL if input srcFileName is not valid name for mirrored output path */
+char* UTIL_createMirroredDestDirName(const char* srcFileName, const char* outDirRootName)
+{
+ char* pathname = NULL;
+ if (!isFileNameValidForMirroredOutput(srcFileName))
+ return NULL;
+
+ pathname = mallocAndJoin2Dir(outDirRootName, trimPath(srcFileName));
+
+ convertPathnameToDirName(pathname);
+ return pathname;
+}
+
+static int
+mirrorSrcDir(char* srcDirName, const char* outDirName)
+{
+ mode_t srcMode;
+ int status = 0;
+ char* newDir = mallocAndJoin2Dir(outDirName, trimPath(srcDirName));
+ if (!newDir)
+ return -ENOMEM;
+
+ srcMode = getDirMode(srcDirName);
+ status = makeDir(newDir, srcMode);
+ free(newDir);
+ return status;
+}
+
+static int
+mirrorSrcDirRecursive(char* srcDirName, const char* outDirName)
+{
+ int status = 0;
+ char* pp = trimLeadingCurrentDir(srcDirName);
+ char* sp = NULL;
+
+ while ((sp = strchr(pp, PATH_SEP)) != NULL) {
+ if (sp != pp) {
+ *sp = '\0';
+ status = mirrorSrcDir(srcDirName, outDirName);
+ if (status != 0)
+ return status;
+ *sp = PATH_SEP;
+ }
+ pp = sp + 1;
+ }
+ status = mirrorSrcDir(srcDirName, outDirName);
+ return status;
+}
+
+static void
+makeMirroredDestDirsWithSameSrcDirMode(char** srcDirNames, unsigned nbFile, const char* outDirName)
+{
+ unsigned int i = 0;
+ for (i = 0; i < nbFile; i++)
+ mirrorSrcDirRecursive(srcDirNames[i], outDirName);
+}
+
+static int
+firstIsParentOrSameDirOfSecond(const char* firstDir, const char* secondDir)
+{
+ size_t firstDirLen = strlen(firstDir),
+ secondDirLen = strlen(secondDir);
+ return firstDirLen <= secondDirLen &&
+ (secondDir[firstDirLen] == PATH_SEP || secondDir[firstDirLen] == '\0') &&
+ 0 == strncmp(firstDir, secondDir, firstDirLen);
+}
+
+static int compareDir(const void* pathname1, const void* pathname2) {
+ /* sort it after remove the leading '/' or './'*/
+ const char* s1 = trimPath(*(char * const *) pathname1);
+ const char* s2 = trimPath(*(char * const *) pathname2);
+ return strcmp(s1, s2);
+}
+
+static void
+makeUniqueMirroredDestDirs(char** srcDirNames, unsigned nbFile, const char* outDirName)
+{
+ unsigned int i = 0, uniqueDirNr = 0;
+ char** uniqueDirNames = NULL;
+
+ if (nbFile == 0)
+ return;
+
+ uniqueDirNames = (char** ) malloc(nbFile * sizeof (char *));
+ CONTROL(uniqueDirNames != NULL);
+
+ /* if dirs is "a/b/c" and "a/b/c/d", we only need call:
+ * we just need "a/b/c/d" */
+ qsort((void *)srcDirNames, nbFile, sizeof(char*), compareDir);
+
+ uniqueDirNr = 1;
+ uniqueDirNames[uniqueDirNr - 1] = srcDirNames[0];
+ for (i = 1; i < nbFile; i++) {
+ char* prevDirName = srcDirNames[i - 1];
+ char* currDirName = srcDirNames[i];
+
+ /* note: we always compare trimmed path, i.e.:
+ * src dir of "./foo" and "/foo" will be both saved into:
+ * "outDirName/foo/" */
+ if (!firstIsParentOrSameDirOfSecond(trimPath(prevDirName),
+ trimPath(currDirName)))
+ uniqueDirNr++;
+
+ /* we need to maintain original src dir name instead of trimmed
+ * dir, so we can retrieve the original src dir's mode_t */
+ uniqueDirNames[uniqueDirNr - 1] = currDirName;
+ }
+
+ makeMirroredDestDirsWithSameSrcDirMode(uniqueDirNames, uniqueDirNr, outDirName);
+
+ free(uniqueDirNames);
+}
+
+static void
+makeMirroredDestDirs(char** srcFileNames, unsigned nbFile, const char* outDirName)
+{
+ unsigned int i = 0;
+ for (i = 0; i < nbFile; ++i)
+ convertPathnameToDirName(srcFileNames[i]);
+ makeUniqueMirroredDestDirs(srcFileNames, nbFile, outDirName);
+}
+
+void UTIL_mirrorSourceFilesDirectories(const char** inFileNames, unsigned int nbFile, const char* outDirName)
+{
+ unsigned int i = 0, validFilenamesNr = 0;
+ char** srcFileNames = (char **) malloc(nbFile * sizeof (char *));
+ CONTROL(srcFileNames != NULL);
+
+ /* check input filenames is valid */
+ for (i = 0; i < nbFile; ++i) {
+ if (isFileNameValidForMirroredOutput(inFileNames[i])) {
+ char* fname = STRDUP(inFileNames[i]);
+ CONTROL(fname != NULL);
+ srcFileNames[validFilenamesNr++] = fname;
+ }
+ }
+
+ if (validFilenamesNr > 0) {
+ makeDir(outDirName, DIR_DEFAULT_MODE);
+ makeMirroredDestDirs(srcFileNames, validFilenamesNr, outDirName);
+ }
+
+ for (i = 0; i < validFilenamesNr; i++)
+ free(srcFileNames[i]);
+ free(srcFileNames);
+}
+
+FileNamesTable*
+UTIL_createExpandedFNT(const char* const* inputNames, size_t nbIfns, int followLinks)
+{
+ unsigned nbFiles;
+ char* buf = (char*)malloc(LIST_SIZE_INCREASE);
+ char* bufend = buf + LIST_SIZE_INCREASE;
+
+ if (!buf) return NULL;
+
+ { size_t ifnNb, pos;
+ for (ifnNb=0, pos=0, nbFiles=0; ifnNb<nbIfns; ifnNb++) {
+ if (!UTIL_isDirectory(inputNames[ifnNb])) {
+ size_t const len = strlen(inputNames[ifnNb]);
+ if (buf + pos + len >= bufend) {
+ ptrdiff_t newListSize = (bufend - buf) + LIST_SIZE_INCREASE;
+ assert(newListSize >= 0);
+ buf = (char*)UTIL_realloc(buf, (size_t)newListSize);
+ if (!buf) return NULL;
+ bufend = buf + newListSize;
+ }
+ if (buf + pos + len < bufend) {
+ memcpy(buf+pos, inputNames[ifnNb], len+1); /* including final \0 */
+ pos += len + 1;
+ nbFiles++;
+ }
+ } else {
+ nbFiles += (unsigned)UTIL_prepareFileList(inputNames[ifnNb], &buf, &pos, &bufend, followLinks);
+ if (buf == NULL) return NULL;
+ } } }
+
+ /* note : even if nbFiles==0, function returns a valid, though empty, FileNamesTable* object */
+
+ { size_t ifnNb, pos;
+ size_t const fntCapacity = nbFiles + 1; /* minimum 1, allows adding one reference, typically stdin */
+ const char** const fileNamesTable = (const char**)malloc(fntCapacity * sizeof(*fileNamesTable));
+ if (!fileNamesTable) { free(buf); return NULL; }
+
+ for (ifnNb = 0, pos = 0; ifnNb < nbFiles; ifnNb++) {
+ fileNamesTable[ifnNb] = buf + pos;
+ if (buf + pos > bufend) { free(buf); free((void*)fileNamesTable); return NULL; }
+ pos += strlen(fileNamesTable[ifnNb]) + 1;
+ }
+ return UTIL_assembleFileNamesTable2(fileNamesTable, nbFiles, fntCapacity, buf);
+ }
+}
+
+
+void UTIL_expandFNT(FileNamesTable** fnt, int followLinks)
+{
+ FileNamesTable* const newFNT = UTIL_createExpandedFNT((*fnt)->fileNames, (*fnt)->tableSize, followLinks);
+ CONTROL(newFNT != NULL);
+ UTIL_freeFileNamesTable(*fnt);
+ *fnt = newFNT;
+}
+
+FileNamesTable* UTIL_createFNT_fromROTable(const char** filenames, size_t nbFilenames)
+{
+ size_t const sizeof_FNTable = nbFilenames * sizeof(*filenames);
+ const char** const newFNTable = (const char**)malloc(sizeof_FNTable);
+ if (newFNTable==NULL) return NULL;
+ memcpy((void*)newFNTable, filenames, sizeof_FNTable); /* void* : mitigate a Visual compiler bug or limitation */
+ return UTIL_assembleFileNamesTable(newFNTable, nbFilenames, NULL);
+}
+
+
+/*-****************************************
+* count the number of cores
+******************************************/
+
+#if defined(_WIN32) || defined(WIN32)
+
+#include <windows.h>
+
+typedef BOOL(WINAPI* LPFN_GLPI)(PSYSTEM_LOGICAL_PROCESSOR_INFORMATION, PDWORD);
+
+DWORD CountSetBits(ULONG_PTR bitMask)
+{
+ DWORD LSHIFT = sizeof(ULONG_PTR)*8 - 1;
+ DWORD bitSetCount = 0;
+ ULONG_PTR bitTest = (ULONG_PTR)1 << LSHIFT;
+ DWORD i;
+
+ for (i = 0; i <= LSHIFT; ++i)
+ {
+ bitSetCount += ((bitMask & bitTest)?1:0);
+ bitTest/=2;
+ }
+
+ return bitSetCount;
+}
+
+int UTIL_countCores(int logical)
+{
+ static int numCores = 0;
+ if (numCores != 0) return numCores;
+
+ { LPFN_GLPI glpi;
+ BOOL done = FALSE;
+ PSYSTEM_LOGICAL_PROCESSOR_INFORMATION buffer = NULL;
+ PSYSTEM_LOGICAL_PROCESSOR_INFORMATION ptr = NULL;
+ DWORD returnLength = 0;
+ size_t byteOffset = 0;
+
+#if defined(_MSC_VER)
+/* Visual Studio does not like the following cast */
+# pragma warning( disable : 4054 ) /* conversion from function ptr to data ptr */
+# pragma warning( disable : 4055 ) /* conversion from data ptr to function ptr */
+#endif
+ glpi = (LPFN_GLPI)(void*)GetProcAddress(GetModuleHandle(TEXT("kernel32")),
+ "GetLogicalProcessorInformation");
+
+ if (glpi == NULL) {
+ goto failed;
+ }
+
+ while(!done) {
+ DWORD rc = glpi(buffer, &returnLength);
+ if (FALSE == rc) {
+ if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
+ if (buffer)
+ free(buffer);
+ buffer = (PSYSTEM_LOGICAL_PROCESSOR_INFORMATION)malloc(returnLength);
+
+ if (buffer == NULL) {
+ perror("zstd");
+ exit(1);
+ }
+ } else {
+ /* some other error */
+ goto failed;
+ }
+ } else {
+ done = TRUE;
+ } }
+
+ ptr = buffer;
+
+ while (byteOffset + sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION) <= returnLength) {
+
+ if (ptr->Relationship == RelationProcessorCore) {
+ if (logical)
+ numCores += CountSetBits(ptr->ProcessorMask);
+ else
+ numCores++;
+ }
+
+ ptr++;
+ byteOffset += sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION);
+ }
+
+ free(buffer);
+
+ return numCores;
+ }
+
+failed:
+ /* try to fall back on GetSystemInfo */
+ { SYSTEM_INFO sysinfo;
+ GetSystemInfo(&sysinfo);
+ numCores = sysinfo.dwNumberOfProcessors;
+ if (numCores == 0) numCores = 1; /* just in case */
+ }
+ return numCores;
+}
+
+#elif defined(__APPLE__)
+
+#include <sys/sysctl.h>
+
+/* Use apple-provided syscall
+ * see: man 3 sysctl */
+int UTIL_countCores(int logical)
+{
+ static S32 numCores = 0; /* apple specifies int32_t */
+ if (numCores != 0) return numCores;
+
+ { size_t size = sizeof(S32);
+ int const ret = sysctlbyname(logical ? "hw.logicalcpu" : "hw.physicalcpu", &numCores, &size, NULL, 0);
+ if (ret != 0) {
+ if (errno == ENOENT) {
+ /* entry not present, fall back on 1 */
+ numCores = 1;
+ } else {
+ perror("zstd: can't get number of cpus");
+ exit(1);
+ }
+ }
+
+ return numCores;
+ }
+}
+
+#elif defined(__linux__)
+
+/* parse /proc/cpuinfo
+ * siblings / cpu cores should give hyperthreading ratio
+ * otherwise fall back on sysconf */
+int UTIL_countCores(int logical)
+{
+ static int numCores = 0;
+
+ if (numCores != 0) return numCores;
+
+ numCores = (int)sysconf(_SC_NPROCESSORS_ONLN);
+ if (numCores == -1) {
+ /* value not queryable, fall back on 1 */
+ return numCores = 1;
+ }
+
+ /* try to determine if there's hyperthreading */
+ { FILE* const cpuinfo = fopen("/proc/cpuinfo", "r");
+#define BUF_SIZE 80
+ char buff[BUF_SIZE];
+
+ int siblings = 0;
+ int cpu_cores = 0;
+ int ratio = 1;
+
+ if (cpuinfo == NULL) {
+ /* fall back on the sysconf value */
+ return numCores;
+ }
+
+ /* assume the cpu cores/siblings values will be constant across all
+ * present processors */
+ while (!feof(cpuinfo)) {
+ if (fgets(buff, BUF_SIZE, cpuinfo) != NULL) {
+ if (strncmp(buff, "siblings", 8) == 0) {
+ const char* const sep = strchr(buff, ':');
+ if (sep == NULL || *sep == '\0') {
+ /* formatting was broken? */
+ goto failed;
+ }
+
+ siblings = atoi(sep + 1);
+ }
+ if (strncmp(buff, "cpu cores", 9) == 0) {
+ const char* const sep = strchr(buff, ':');
+ if (sep == NULL || *sep == '\0') {
+ /* formatting was broken? */
+ goto failed;
+ }
+
+ cpu_cores = atoi(sep + 1);
+ }
+ } else if (ferror(cpuinfo)) {
+ /* fall back on the sysconf value */
+ goto failed;
+ } }
+ if (siblings && cpu_cores && siblings > cpu_cores) {
+ ratio = siblings / cpu_cores;
+ }
+
+ if (ratio && numCores > ratio && !logical) {
+ numCores = numCores / ratio;
+ }
+
+failed:
+ fclose(cpuinfo);
+ return numCores;
+ }
+}
+
+#elif defined(__FreeBSD__)
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+/* Use physical core sysctl when available
+ * see: man 4 smp, man 3 sysctl */
+int UTIL_countCores(int logical)
+{
+ static int numCores = 0; /* freebsd sysctl is native int sized */
+#if __FreeBSD_version >= 1300008
+ static int perCore = 1;
+#endif
+ if (numCores != 0) return numCores;
+
+#if __FreeBSD_version >= 1300008
+ { size_t size = sizeof(numCores);
+ int ret = sysctlbyname("kern.smp.cores", &numCores, &size, NULL, 0);
+ if (ret == 0) {
+ if (logical) {
+ ret = sysctlbyname("kern.smp.threads_per_core", &perCore, &size, NULL, 0);
+ /* default to physical cores if logical cannot be read */
+ if (ret == 0)
+ numCores *= perCore;
+ }
+
+ return numCores;
+ }
+ if (errno != ENOENT) {
+ perror("zstd: can't get number of cpus");
+ exit(1);
+ }
+ /* sysctl not present, fall through to older sysconf method */
+ }
+#else
+ /* suppress unused parameter warning */
+ (void) logical;
+#endif
+
+ numCores = (int)sysconf(_SC_NPROCESSORS_ONLN);
+ if (numCores == -1) {
+ /* value not queryable, fall back on 1 */
+ numCores = 1;
+ }
+ return numCores;
+}
+
+#elif defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) || defined(__CYGWIN__)
+
+/* Use POSIX sysconf
+ * see: man 3 sysconf */
+int UTIL_countCores(int logical)
+{
+ static int numCores = 0;
+
+ /* suppress unused parameter warning */
+ (void)logical;
+
+ if (numCores != 0) return numCores;
+
+ numCores = (int)sysconf(_SC_NPROCESSORS_ONLN);
+ if (numCores == -1) {
+ /* value not queryable, fall back on 1 */
+ return numCores = 1;
+ }
+ return numCores;
+}
+
+#else
+
+int UTIL_countCores(int logical)
+{
+ /* suppress unused parameter warning */
+ (void)logical;
+
+ /* assume 1 */
+ return 1;
+}
+
+#endif
+
+int UTIL_countPhysicalCores(void)
+{
+ return UTIL_countCores(0);
+}
+
+int UTIL_countLogicalCores(void)
+{
+ return UTIL_countCores(1);
+}
+
+#if defined (__cplusplus)
+}
+#endif
notaz.gp2x.de / pcsx_rearmed.git / blobdiff