summaryrefslogtreecommitdiffstats
path: root/libs/host/CopyFile.c
diff options
context:
space:
mode:
Diffstat (limited to 'libs/host/CopyFile.c')
-rw-r--r--libs/host/CopyFile.c626
1 files changed, 0 insertions, 626 deletions
diff --git a/libs/host/CopyFile.c b/libs/host/CopyFile.c
deleted file mode 100644
index a822b41..0000000
--- a/libs/host/CopyFile.c
+++ /dev/null
@@ -1,626 +0,0 @@
-/*
- * Copyright 2005 The Android Open Source Project
- *
- * Android "cp" replacement.
- *
- * The GNU/Linux "cp" uses O_LARGEFILE in its open() calls, utimes() instead
- * of utime(), and getxattr()/setxattr() instead of chmod(). These are
- * probably "better", but are non-portable, and not necessary for our
- * purposes.
- */
-#include <host/CopyFile.h>
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <getopt.h>
-#include <dirent.h>
-#include <fcntl.h>
-#include <utime.h>
-#include <limits.h>
-#include <errno.h>
-#include <assert.h>
-
-#ifdef HAVE_MS_C_RUNTIME
-# define mkdir(path,mode) _mkdir(path)
-#endif
-
-#ifndef HAVE_SYMLINKS
-# define lstat stat
-# ifndef EACCESS /* seems to be missing from the Mingw headers */
-# define EACCESS 13
-# endif
-#endif
-
-#ifndef O_BINARY
-# define O_BINARY 0
-#endif
-
-/*#define DEBUG_MSGS*/
-#ifdef DEBUG_MSGS
-# define DBUG(x) printf x
-#else
-# define DBUG(x) ((void)0)
-#endif
-
-#define FSSEP '/' /* filename separator char */
-
-static int copyFileRecursive(const char* src, const char* dst, bool isCmdLine, unsigned int options);
-
-/*
- * Returns true if the source file is newer than the destination file.
- *
- * The check is based on the modification date, whole seconds only. This
- * also returns true if the file sizes don't match.
- */
-static bool isSourceNewer(const struct stat* pSrcStat, const struct stat* pDstStat)
-{
- return (pSrcStat->st_mtime > pDstStat->st_mtime) ||
- (pSrcStat->st_size != pDstStat->st_size);
-}
-
-/*
- * Returns true if the source and destination files are actually the
- * same thing. We detect this by checking the inode numbers, which seems
- * to work on Cygwin.
- */
-static bool isSameFile(const struct stat* pSrcStat, const struct stat* pDstStat)
-{
-#ifndef HAVE_VALID_STAT_ST_INO
- /* with MSVCRT.DLL, stat always sets st_ino to 0, and there is no simple way to */
- /* get the equivalent information with Win32 (Cygwin does some weird stuff in */
- /* its winsup/cygwin/fhandler_disk_file.cc to emulate this, too complex for us) */
- return 0;
-#else
- return (pSrcStat->st_ino == pDstStat->st_ino);
-#endif
-}
-
-static void printCopyMsg(const char* src, const char* dst, unsigned int options)
-{
- if ((options & COPY_VERBOSE_MASK) > 0)
- printf(" '%s' --> '%s'\n", src, dst);
-}
-
-static void printNotNewerMsg(const char* src, const char* dst, unsigned int options)
-{
- if ((options & COPY_VERBOSE_MASK) > 1)
- printf(" '%s' is up-to-date\n", dst);
-}
-
-/*
- * Copy the contents of one file to another.
- *
- * The files are assumed to be seeked to the start.
- */
-static int copyFileContents(const char* dst, int dstFd, const char* src, int srcFd)
-{
- unsigned char buf[8192];
- ssize_t readCount, writeCount;
-
- /*
- * Read a chunk, write it, and repeat.
- */
- while (1) {
- readCount = read(srcFd, buf, sizeof(buf));
- if (readCount < 0) {
- fprintf(stderr,
- "acp: failed reading '%s': %s\n", src, strerror(errno));
- return -1;
- }
-
- if (readCount > 0) {
- writeCount = write(dstFd, buf, readCount);
- if (writeCount < 0) {
- fprintf(stderr,
- "acp: failed writing '%s': %s\n", dst, strerror(errno));
- return -1;
- }
- if (writeCount != readCount) {
- fprintf(stderr, "acp: partial write to '%s' (%d of %d)\n",
- dst, writeCount, readCount);
- return -1;
- }
- }
-
- if (readCount < (ssize_t) sizeof(buf))
- break;
- }
-
- return 0;
-}
-
-/*
- * Set the permissions, owner, and timestamps on the destination file
- * equal to those of the source file.
- *
- * Failures here are "soft"; they don't produce warning messages and don't
- * cause the cp command to report a failure.
- */
-static int setPermissions(const char* dst, const struct stat* pSrcStat, unsigned int options)
-{
- struct utimbuf ut;
-
- if (options & COPY_TIMESTAMPS) {
- /*
- * Start with timestamps. The access and mod dates are not affected
- * by the next operations.
- */
- ut.actime = pSrcStat->st_atime;
- ut.modtime = pSrcStat->st_mtime;
- if (utime(dst, &ut) != 0) {
- DBUG(("--- unable to set timestamps on '%s': %s\n",
- dst, strerror(errno)));
- }
- }
-
- if (options & COPY_PERMISSIONS) {
- /*
- * Set the permissions.
- */
- if (chmod(dst, pSrcStat->st_mode & ~(S_IFMT)) != 0) {
- DBUG(("--- unable to set perms on '%s' to 0%o: %s\n",
- dst, pSrcStat->st_mode & ~(S_IFMT), strerror(errno)));
- }
-#ifndef HAVE_MS_C_RUNTIME
- /*
- * Set the owner.
- */
- if (chown(dst, pSrcStat->st_uid, pSrcStat->st_gid) != 0) {
- DBUG(("--- unable to set owner of '%s' to %d/%d: %s\n",
- dst, pSrcStat->st_uid, pSrcStat->st_gid, strerror(errno)));
- }
-#endif
- }
-
- return 0;
-}
-
-/*
- * Copy a regular file. If the destination file exists and is not a
- * regular file, we fail. However, we use stat() rather than lstat(),
- * because it's okay to write through a symlink (the noDereference stuff
- * only applies to the source file).
- *
- * If the file doesn't exist, create it. If it does exist, truncate it.
- */
-static int copyRegular(const char* src, const char* dst, const struct stat* pSrcStat, unsigned int options)
-{
- struct stat dstStat;
- int srcFd, dstFd, statResult, copyResult;
-
- DBUG(("--- copying regular '%s' to '%s'\n", src, dst));
-
- statResult = stat(dst, &dstStat);
- if (statResult == 0 && !S_ISREG(dstStat.st_mode)) {
- fprintf(stderr,
- "acp: destination '%s' exists and is not regular file\n",
- dst);
- return -1;
- } else if (statResult != 0 && errno != ENOENT) {
- fprintf(stderr, "acp: unable to stat destination '%s'\n", dst);
- return -1;
- }
-
- if (statResult == 0) {
- if (isSameFile(pSrcStat, &dstStat)) {
- fprintf(stderr, "acp: '%s' and '%s' are the same file\n",
- src, dst);
- return -1;
- }
- if (options & COPY_UPDATE_ONLY) {
- if (!isSourceNewer(pSrcStat, &dstStat)) {
- DBUG(("--- source is not newer: '%s'\n", src));
- printNotNewerMsg(src, dst, options);
- return 0;
- }
- }
- }
-
- /* open src */
- srcFd = open(src, O_RDONLY | O_BINARY, 0);
- if (srcFd < 0) {
- fprintf(stderr, "acp: unable to open '%s': %s\n", src, strerror(errno));
- return -1;
- }
-
- /* open dest with O_CREAT | O_TRUNC */
- DBUG(("--- opening '%s'\n", dst));
- dstFd = open(dst, O_CREAT | O_TRUNC | O_WRONLY | O_BINARY, 0644);
-
- if (dstFd < 0) {
- if (errno == ENOENT) {
- /* this happens if the target directory doesn't exist */
- fprintf(stderr,
- "acp: cannot create '%s': %s\n", dst, strerror(errno));
- (void) close(srcFd);
- return -1;
- }
-
- /* if "force" is set, try removing the destination file and retry */
- if (options & COPY_FORCE) {
- if (unlink(dst) != 0) {
-#ifdef HAVE_MS_C_RUNTIME
- /* MSVCRT.DLL unlink will fail with EACCESS if the file is set read-only */
- /* so try to change its mode, and unlink again */
- if (errno == EACCESS) {
- if (chmod(dst, S_IWRITE|S_IREAD) == 0 && unlink(dst) == 0)
- goto Open_File;
- }
-#endif
- fprintf(stderr, "acp: unable to remove '%s': %s\n",
- dst, strerror(errno));
- (void) close(srcFd);
- return -1;
- }
-#ifdef HAVE_MS_C_RUNTIME
- Open_File:
-#endif
- dstFd = open(dst, O_CREAT | O_TRUNC | O_WRONLY | O_BINARY, 0644);
- }
- }
- if (dstFd < 0) {
- fprintf(stderr, "acp: unable to open '%s': %s\n",
- dst, strerror(errno));
- (void) close(srcFd);
- return -1;
- }
-
- copyResult = copyFileContents(dst, dstFd, src, srcFd);
-
- (void) close(srcFd);
- (void) close(dstFd);
- if (copyResult != 0)
- return -1;
-
-#ifdef MACOSX_RSRC
- {
- char* srcRsrcName = NULL;
- char* dstRsrcName = NULL;
- struct stat rsrcStat;
-
- srcRsrcName = malloc(strlen(src) + 5 + 1);
- strcpy(srcRsrcName, src);
- strcat(srcRsrcName, "/rsrc");
-
- dstRsrcName = malloc(strlen(dst) + 5 + 1);
- strcpy(dstRsrcName, dst);
- strcat(dstRsrcName, "/rsrc");
-
- if (stat(srcRsrcName, &rsrcStat) == 0 && rsrcStat.st_size > 0) {
- DBUG(("--- RSRC: %s --> %s\n", srcRsrcName, dstRsrcName));
-
- srcFd = open(srcRsrcName, O_RDONLY);
- dstFd = open(dstRsrcName, O_TRUNC | O_WRONLY, 0);
- copyResult = -1;
- if (srcFd >= 0 && dstFd >= 0) {
- copyResult = copyFileContents(dstRsrcName, dstFd,
- srcRsrcName, srcFd);
- (void) close(srcFd);
- (void) close(dstFd);
- }
-
- if (copyResult != 0)
- return -1;
- }
-
- free(srcRsrcName);
- free(dstRsrcName);
- }
-#endif
-
- setPermissions(dst, pSrcStat, options);
-
- printCopyMsg(src, dst, options);
-
- return 0;
-}
-
-
-#ifdef HAVE_SYMLINKS
-/*
- * Copy a symlink. This only happens if we're in "no derefence" mode,
- * in which we copy the links rather than the files that are pointed at.
- *
- * We always discard the destination file. If it's a symlink already,
- * we want to throw it out and replace it. If it's not a symlink, we
- * need to trash it so we can create one.
- */
-static int copySymlink(const char* src, const char* dst, const struct stat* pSrcStat, unsigned int options)
-{
- struct stat dstStat;
- char linkBuf[PATH_MAX+1];
- int statResult, nameLen;
-
- assert(options & COPY_NO_DEREFERENCE);
- DBUG(("--- copying symlink '%s' to '%s'\n", src, dst));
-
- /* NOTE: we use lstat() here */
- statResult = lstat(dst, &dstStat);
- if (statResult == 0 && !S_ISREG(dstStat.st_mode)
- && !S_ISLNK(dstStat.st_mode)
- )
- {
- fprintf(stderr,
- "acp: destination '%s' exists and is not regular or symlink\n",
- dst);
- return -1;
- }
-
- if (statResult == 0) {
- if (isSameFile(pSrcStat, &dstStat)) {
- fprintf(stderr, "acp: '%s' and '%s' are the same file\n",
- src, dst);
- return -1;
- }
- if (options & COPY_UPDATE_ONLY) {
- if (!isSourceNewer(pSrcStat, &dstStat)) {
- DBUG(("--- source is not newer: '%s'\n", src));
- printNotNewerMsg(src, dst, options);
- return 0;
- }
- }
- }
-
- /* extract the symlink contents */
- nameLen = readlink(src, linkBuf, sizeof(linkBuf)-1);
- if (nameLen <= 0) {
- fprintf(stderr, "acp: unable to read symlink '%s': %s\n",
- src, strerror(errno));
- return -1;
- }
- linkBuf[nameLen] = '\0';
- DBUG(("--- creating symlink file '%s' (--> %s)\n", dst, linkBuf));
-
- if (statResult == 0) {
- DBUG(("--- removing '%s'\n", dst));
- if (unlink(dst) != 0) {
- fprintf(stderr, "acp: unable to remove '%s': %s\n",
- dst, strerror(errno));
- return -1;
- }
- }
-
- if (symlink(linkBuf, dst) != 0) {
- fprintf(stderr, "acp: unable to create symlink '%s' [%s]: %s\n",
- dst, linkBuf, strerror(errno));
- return -1;
- }
-
- /*
- * There's no way to set the file date or access permissions, but
- * it is possible to set the owner.
- */
- if (options & COPY_PERMISSIONS) {
- if (lchown(dst, pSrcStat->st_uid, pSrcStat->st_gid) != 0)
- DBUG(("--- lchown failed: %s\n", strerror(errno)));
- }
-
- printCopyMsg(src, dst, options);
-
- return 0;
-}
-#endif /* HAVE_SYMLINKS */
-
-/*
- * Copy the contents of one directory to another. Both "src" and "dst"
- * must be directories. We will create "dst" if it does not exist.
- */
-int copyDirectory(const char* src, const char* dst, const struct stat* pSrcStat, unsigned int options)
-{
- int retVal = 0;
- struct stat dstStat;
- DIR* dir;
- int cc, statResult;
-
- DBUG(("--- copy dir '%s' to '%s'\n", src, dst));
-
- statResult = stat(dst, &dstStat);
- if (statResult == 0 && !S_ISDIR(dstStat.st_mode)) {
- fprintf(stderr,
- "acp: destination '%s' exists and is not a directory\n", dst);
- return -1;
- } else if (statResult != 0 && errno != ENOENT) {
- fprintf(stderr, "acp: unable to stat destination '%s'\n", dst);
- return -1;
- }
-
- if (statResult == 0) {
- if (isSameFile(pSrcStat, &dstStat)) {
- fprintf(stderr,
- "acp: cannot copy directory into itself ('%s' and '%s')\n",
- src, dst);
- return -1;
- }
- } else {
- DBUG(("--- creating dir '%s'\n", dst));
- cc = mkdir(dst, 0755);
- if (cc != 0) {
- fprintf(stderr, "acp: unable to create directory '%s': %s\n",
- dst, strerror(errno));
- return -1;
- }
-
- /* only print on mkdir */
- printCopyMsg(src, dst, options);
- }
-
- /*
- * Open the directory, and plow through its contents.
- */
- dir = opendir(src);
- if (dir == NULL) {
- fprintf(stderr, "acp: unable to open directory '%s': %s\n",
- src, strerror(errno));
- return -1;
- }
-
- while (1) {
- struct dirent* ent;
- char* srcFile;
- char* dstFile;
- int srcLen, dstLen, nameLen;
-
- ent = readdir(dir);
- if (ent == NULL)
- break;
-
- if (strcmp(ent->d_name, ".") == 0 ||
- strcmp(ent->d_name, "..") == 0)
- {
- continue;
- }
-
- nameLen = strlen(ent->d_name);
- srcLen = strlen(src);
- dstLen = strlen(dst);
-
- srcFile = malloc(srcLen +1 + nameLen +1);
- memcpy(srcFile, src, srcLen);
- srcFile[srcLen] = FSSEP;
- memcpy(srcFile + srcLen+1, ent->d_name, nameLen +1);
-
- dstFile = malloc(dstLen +1 + nameLen +1);
- memcpy(dstFile, dst, dstLen);
- dstFile[dstLen] = FSSEP;
- memcpy(dstFile + dstLen+1, ent->d_name, nameLen +1);
-
- if (copyFileRecursive(srcFile, dstFile, false, options) != 0)
- retVal = -1; /* note failure and keep going */
-
- free(srcFile);
- free(dstFile);
- }
- closedir(dir);
-
- setPermissions(dst, pSrcStat, options);
-
- return retVal;
-}
-
-/*
- * Do the actual copy. This is called recursively from copyDirectory().
- *
- * "dst" should only be a directory if "src" is also a directory.
- *
- * Returns 0 on success.
- */
-static int copyFileRecursive(const char* src, const char* dst, bool isCmdLine, unsigned int options)
-{
- char* srcExe = NULL;
- char* dstExe = NULL;
- char* dstDir = NULL;
- struct stat srcStat;
- int retVal = 0;
- int statResult, statErrno;
-
- /*
- * Stat the source file. If it doesn't exist, fail.
- */
- if (options & COPY_NO_DEREFERENCE)
- statResult = lstat(src, &srcStat);
- else
- statResult = stat(src, &srcStat);
- statErrno = errno; /* preserve across .exe attempt */
-
-#ifdef WIN32_EXE
- /*
- * Here's the interesting part. Under Cygwin, if you have a file
- * called "foo.exe", stat("foo", ...) will succeed, but open("foo", ...)
- * will fail. We need to figure out what its name is supposed to be
- * so we can create the correct destination file.
- *
- * If we don't have the "-e" flag set, we want "acp foo bar" to fail,
- * not automatically find "foo.exe". That way, if we really were
- * trying to copy "foo", it doesn't grab something we don't want.
- */
- if (isCmdLine && statResult == 0) {
- int tmpFd;
- tmpFd = open(src, O_RDONLY | O_BINARY, 0);
- if (tmpFd < 0) {
- statResult = -1;
- statErrno = ENOENT;
- } else {
- (void) close(tmpFd);
- }
- }
-
- /*
- * If we didn't find the file, try it again with ".exe".
- */
- if (isCmdLine && statResult < 0 && statErrno == ENOENT && (options & COPY_TRY_EXE)) {
- srcExe = malloc(strlen(src) + 4 +1);
- strcpy(srcExe, src);
- strcat(srcExe, ".exe");
-
- if (options & COPY_NO_DEREFERENCE)
- statResult = lstat(srcExe, &srcStat);
- else
- statResult = stat(srcExe, &srcStat);
-
- if (statResult == 0 && !S_ISREG(srcStat.st_mode))
- statResult = -1; /* fail, use original statErrno below */
-
- if (statResult == 0) {
- /* found a .exe, copy that instead */
- dstExe = malloc(strlen(dst) + 4 +1);
- strcpy(dstExe, dst);
- strcat(dstExe, ".exe");
-
- src = srcExe;
- dst = dstExe;
- } else {
- DBUG(("--- couldn't find '%s' either\n", srcExe));
- }
- }
-#endif
- if (statResult < 0) {
- if (statErrno == ENOENT)
- fprintf(stderr, "acp: file '%s' does not exist\n", src);
- else
- fprintf(stderr, "acp: unable to stat '%s': %s\n",
- src, strerror(statErrno));
- retVal = -1;
- goto bail;
- }
-
- /*
- * If "src" is a directory, ignore it if "recursive" isn't set.
- *
- * We want to create "dst" as a directory (or verify that it already
- * exists as a directory), and then copy its contents.
- */
- if (S_ISDIR(srcStat.st_mode)) {
- if (!(options & COPY_RECURSIVE)) {
- fprintf(stderr, "acp: omitting directory '%s'\n", src);
- } else {
- retVal = copyDirectory(src, dst, &srcStat, options);
- }
-#ifdef HAVE_SYMLINKS
- } else if (S_ISLNK(srcStat.st_mode)) {
- retVal = copySymlink(src, dst, &srcStat, options);
-#endif
- } else if (S_ISREG(srcStat.st_mode)) {
- retVal = copyRegular(src, dst, &srcStat, options);
- } else {
- fprintf(stderr, "acp: skipping unusual file '%s' (mode=0%o)\n",
- src, srcStat.st_mode);
- retVal = -1;
- }
-
-bail:
- free(srcExe);
- free(dstExe);
- free(dstDir);
- return retVal;
-}
-
-int copyFile(const char* src, const char* dst, unsigned int options)
-{
- return copyFileRecursive(src, dst, true, options);
-}
-
-
generated by cgit v1.1 at 2025-01-09 22:10:53 +0000