147 lines
3.4 KiB
C++
Executable file
147 lines
3.4 KiB
C++
Executable file
#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <sys/mount.h>
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#include <sys/wait.h>
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#include <linux/fs.h>
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#include <sys/ioctl.h>
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#include <linux/kdev_t.h>
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#define LOG_TAG "Vold"
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#include <android-base/logging.h>
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#include <android-base/stringprintf.h>
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#include <cutils/log.h>
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#include <cutils/properties.h>
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#include <selinux/selinux.h>
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#include <logwrap/logwrap.h>
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#include "Exfat.h"
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#include "Utils.h"
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#include "VoldUtil.h"
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using android::base::StringPrintf;
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namespace android {
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namespace vold {
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namespace exfat {
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static const char* kMntPath = "/system/bin/mount.exfat";
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static const char* kFsckPath = "/system/bin/fsck.exfat";
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static const char* kMkfsPath = "/system/bin/mkfs.exfat";
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bool IsSupported() {
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return access(kFsckPath, X_OK) == 0
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&& access(kMkfsPath, X_OK) == 0
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&& access(kMntPath, X_OK) == 0;
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}
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status_t Check(const std::string& source) {
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if (access(kFsckPath, X_OK)) {
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SLOGW("Skipping fs checks\n");
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return 0;
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}
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int pass = 1;
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int rc = 0;
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do {
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std::vector<std::string> cmd;
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cmd.push_back(kFsckPath);
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cmd.push_back(source);
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// Fat devices are currently always untrusted
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rc = ForkExecvp(cmd, sFsckUntrustedContext);
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if (rc < 0) {
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SLOGE("Filesystem check failed due to logwrap error");
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errno = EIO;
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return -1;
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}
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rc = WEXITSTATUS(rc);
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switch(rc) {
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case 0:
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SLOGI("Filesystem check completed OK");
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return 0;
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case 2:
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SLOGE("Filesystem check failed (not a EXFAT filesystem)");
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errno = ENODATA;
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return -1;
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case 4:
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if (pass++ <= 3) {
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SLOGW("Filesystem modified - rechecking (pass %d)",
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pass);
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continue;
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}
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SLOGE("Failing check after too many rechecks");
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errno = EIO;
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return -1;
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default:
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SLOGE("Filesystem check failed (unknown exit code %d)", rc);
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errno = EIO;
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return -1;
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}
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} while (0);
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return 0;
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}
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status_t Mount(const std::string& source, const std::string& target, bool ro,
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bool remount, bool executable, int ownerUid, int ownerGid, int permMask,
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bool createLost) {
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int rc;
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char mountData[255];
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const char* c_source = source.c_str();
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const char* c_target = target.c_str();
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sprintf(mountData,
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"locale=utf8,uid=%d,gid=%d,fmask=%o,dmask=%o,noatime,nodiratime",
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ownerUid, ownerGid, permMask, permMask);
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if (access(kMntPath, X_OK)) {
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SLOGW("Skipping fs Mount\n");
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return 1;
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}
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do {
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std::vector<std::string> cmd;
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cmd.push_back(kMntPath);
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cmd.push_back("-o");
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cmd.push_back(mountData);
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cmd.push_back(c_source);
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cmd.push_back(c_target);
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rc = ForkExecvp(cmd);
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} while (0);
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if( rc !=0 ) {
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SLOGE("exfat::Mount error (%s)", strerror(errno));
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}
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return rc;
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}
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status_t Format(const std::string& source, unsigned int numSectors) {
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SLOGW("[lkj]:Skipping exfat format\n");
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return 0;
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}
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} // namespace exfat
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} // namespace vold
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} // namespace android
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