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file_io.cpp
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file_io.cpp
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#include "file_io.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <stdbool.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <dirent.h>
#include <ctype.h>
#include <sys/vfs.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <linux/magic.h>
#include <algorithm>
#include <fstream>
#include <vector>
#include <string>
#include <regex>
#include "osd.h"
#include "fpga_io.h"
#include "menu.h"
#include "errno.h"
#include "DiskImage.h"
#include "user_io.h"
#include "cfg.h"
#include "input.h"
#include "miniz.h"
#include "scheduler.h"
#include "video.h"
#include "support.h"
#define MIN(a,b) (((a)<(b)) ? (a) : (b))
typedef std::vector<direntext_t> DirentVector;
/* Max. length for entries within the .showlist and .hidelist files. */
constexpr int MAX_LINE_LENGTH = 4096;
static const size_t YieldIterations = 128;
DirentVector DirItem;
static int iSelectedEntry = 0; // selected entry index
static int iFirstEntry = 0;
static char full_path[2100];
uint8_t loadbuf[LOADBUF_SZ];
fileTYPE::fileTYPE()
{
filp = 0;
mode = 0;
type = 0;
zip = 0;
size = 0;
offset = 0;
}
fileTYPE::~fileTYPE()
{
FileClose(this);
}
int fileTYPE::opened()
{
return filp || zip;
}
struct fileZipArchive
{
mz_zip_archive archive;
int index;
mz_zip_reader_extract_iter_state* iter;
__off64_t offset;
};
static int FileIsZipped(char* path, char** zip_path, char** file_path)
{
char* z = strcasestr(path, ".zip");
if (z)
{
z += 4;
if (!z[0]) z[1] = 0;
*z++ = 0;
if (zip_path) *zip_path = path;
if (file_path) *file_path = z;
return 1;
}
return 0;
}
static char* make_fullpath(const char *path, int mode = 0)
{
if (path[0] != '/')
{
sprintf(full_path, "%s/%s", (mode == -1) ? "" : getRootDir(), path);
}
else
{
sprintf(full_path, "%s",path);
}
return full_path;
}
static int get_stmode(const char *path)
{
struct stat64 st;
return (stat64(path, &st) < 0) ? 0 : st.st_mode;
}
struct stat64* getPathStat(const char *path)
{
make_fullpath(path);
static struct stat64 st;
return (stat64(full_path, &st) >= 0) ? &st : NULL;
}
static int isPathDirectory(const char *path, int use_zip = 1)
{
make_fullpath(path);
char *zip_path, *file_path;
if (use_zip && FileIsZipped(full_path, &zip_path, &file_path))
{
mz_zip_archive z{};
if (!mz_zip_reader_init_file(&z, zip_path, 0))
{
printf("isPathDirectory(mz_zip_reader_init_file) Zip:%s, error:%s\n", zip_path,
mz_zip_get_error_string(mz_zip_get_last_error(&z)));
return 0;
}
if (!*file_path)
{
mz_zip_reader_end(&z);
return 1;
}
// Folder names always end with a slash in the zip
// file central directory.
strcat(file_path, "/");
const int file_index = mz_zip_reader_locate_file(&z, file_path, NULL, 0);
if (file_index < 0)
{
printf("isPathDirectory(mz_zip_reader_locate_file) Zip:%s, file:%s, error: %s\n",
zip_path, file_path,
mz_zip_get_error_string(mz_zip_get_last_error(&z)));
mz_zip_reader_end(&z);
return 0;
}
if (mz_zip_reader_is_file_a_directory(&z, file_index))
{
mz_zip_reader_end(&z);
return 1;
}
mz_zip_reader_end(&z);
}
else
{
int stmode = get_stmode(full_path);
if (!stmode)
{
//printf("isPathDirectory(stat) path: %s, error: %s.\n", full_path, strerror(errno));
return 0;
}
if (stmode & S_IFDIR) return 1;
}
return 0;
}
static int isPathRegularFile(const char *path, int use_zip = 1)
{
make_fullpath(path);
char *zip_path, *file_path;
if (use_zip && FileIsZipped(full_path, &zip_path, &file_path))
{
mz_zip_archive z{};
if (!mz_zip_reader_init_file(&z, zip_path, 0))
{
//printf("isPathRegularFile(mz_zip_reader_init_file) Zip:%s, error:%s\n", zip_path,
// mz_zip_get_error_string(mz_zip_get_last_error(&z)));
return 0;
}
if (!*file_path)
{
mz_zip_reader_end(&z);
return 0;
}
const int file_index = mz_zip_reader_locate_file(&z, file_path, NULL, 0);
if (file_index < 0)
{
//printf("isPathRegularFile(mz_zip_reader_locate_file) Zip:%s, file:%s, error: %s\n",
// zip_path, file_path,
// mz_zip_get_error_string(mz_zip_get_last_error(&z)));
mz_zip_reader_end(&z);
return 0;
}
if (!mz_zip_reader_is_file_a_directory(&z, file_index) && mz_zip_reader_is_file_supported(&z, file_index))
{
mz_zip_reader_end(&z);
return 1;
}
mz_zip_reader_end(&z);
}
else
{
if (get_stmode(full_path) & S_IFREG) return true;
}
return 0;
}
void FileClose(fileTYPE *file)
{
if (file->zip)
{
if (file->zip->iter)
{
mz_zip_reader_extract_iter_free(file->zip->iter);
}
mz_zip_reader_end(&file->zip->archive);
delete file->zip;
}
if (file->filp)
{
//printf("closing %p\n", file->filp);
fclose(file->filp);
if (file->type == 1)
{
if (file->name[0] == '/')
{
shm_unlink(file->name);
}
file->type = 0;
}
}
file->zip = nullptr;
file->filp = nullptr;
file->size = 0;
}
static int zip_search_by_crc(mz_zip_archive *zipArchive, uint32_t crc32)
{
for (unsigned int file_index = 0; file_index < zipArchive->m_total_files; file_index++)
{
mz_zip_archive_file_stat s;
if (mz_zip_reader_file_stat(zipArchive, file_index, &s))
{
if (s.m_crc32 == crc32)
{
return file_index;
}
}
}
return -1;
}
int FileOpenZip(fileTYPE *file, const char *name, uint32_t crc32)
{
make_fullpath(name);
FileClose(file);
file->mode = 0;
file->type = 0;
char *p = strrchr(full_path, '/');
strcpy(file->name, (p) ? p + 1 : full_path);
char *zip_path, *file_path;
if (!FileIsZipped(full_path, &zip_path, &file_path))
{
printf("FileOpenZip: %s, is not a zip.\n", full_path);
return 0;
}
file->zip = new fileZipArchive{};
if (!mz_zip_reader_init_file(&file->zip->archive, zip_path, 0))
{
printf("FileOpenZip(mz_zip_reader_init_file) Zip:%s, error:%s\n", zip_path,
mz_zip_get_error_string(mz_zip_get_last_error(&file->zip->archive)));
return 0;
}
file->zip->index = -1;
if (crc32) file->zip->index = zip_search_by_crc(&file->zip->archive, crc32);
if (file->zip->index < 0) file->zip->index = mz_zip_reader_locate_file(&file->zip->archive, file_path, NULL, 0);
if (file->zip->index < 0)
{
printf("FileOpenZip(mz_zip_reader_locate_file) Zip:%s, file:%s, error: %s\n",
zip_path, file_path,
mz_zip_get_error_string(mz_zip_get_last_error(&file->zip->archive)));
FileClose(file);
return 0;
}
mz_zip_archive_file_stat s;
if (!mz_zip_reader_file_stat(&file->zip->archive, file->zip->index, &s))
{
printf("FileOpenZip(mz_zip_reader_file_stat) Zip:%s, file:%s, error:%s\n",
zip_path, file_path,
mz_zip_get_error_string(mz_zip_get_last_error(&file->zip->archive)));
FileClose(file);
return 0;
}
file->size = s.m_uncomp_size;
file->zip->iter = mz_zip_reader_extract_iter_new(&file->zip->archive, file->zip->index, 0);
if (!file->zip->iter)
{
printf("FileOpenZip(mz_zip_reader_extract_iter_new) Zip:%s, file:%s, error:%s\n",
zip_path, file_path,
mz_zip_get_error_string(mz_zip_get_last_error(&file->zip->archive)));
FileClose(file);
return 0;
}
file->zip->offset = 0;
file->offset = 0;
file->mode = O_RDONLY;
return 1;
}
int FileOpenEx(fileTYPE *file, const char *name, int mode, char mute, int use_zip)
{
make_fullpath((char*)name, mode);
FileClose(file);
file->mode = 0;
file->type = 0;
char *p = strrchr(full_path, '/');
strcpy(file->name, (mode == -1) ? full_path : p + 1);
char *zip_path, *file_path;
if (use_zip && (mode != -1) && FileIsZipped(full_path, &zip_path, &file_path))
{
if (mode & O_RDWR || mode & O_WRONLY)
{
if(!mute) printf("FileOpenEx(mode) Zip:%s, writing to zipped files is not supported.\n",
full_path);
return 0;
}
file->zip = new fileZipArchive{};
if (!mz_zip_reader_init_file(&file->zip->archive, zip_path, 0))
{
if(!mute) printf("FileOpenEx(mz_zip_reader_init_file) Zip:%s, error:%s\n", zip_path,
mz_zip_get_error_string(mz_zip_get_last_error(&file->zip->archive)));
return 0;
}
file->zip->index = mz_zip_reader_locate_file(&file->zip->archive, file_path, NULL, 0);
if (file->zip->index < 0)
{
if(!mute) printf("FileOpenEx(mz_zip_reader_locate_file) Zip:%s, file:%s, error: %s\n",
zip_path, file_path,
mz_zip_get_error_string(mz_zip_get_last_error(&file->zip->archive)));
FileClose(file);
return 0;
}
mz_zip_archive_file_stat s;
if (!mz_zip_reader_file_stat(&file->zip->archive, file->zip->index, &s))
{
if(!mute) printf("FileOpenEx(mz_zip_reader_file_stat) Zip:%s, file:%s, error:%s\n",
zip_path, file_path,
mz_zip_get_error_string(mz_zip_get_last_error(&file->zip->archive)));
FileClose(file);
return 0;
}
file->size = s.m_uncomp_size;
file->zip->iter = mz_zip_reader_extract_iter_new(&file->zip->archive, file->zip->index, 0);
if (!file->zip->iter)
{
if(!mute) printf("FileOpenEx(mz_zip_reader_extract_iter_new) Zip:%s, file:%s, error:%s\n",
zip_path, file_path,
mz_zip_get_error_string(mz_zip_get_last_error(&file->zip->archive)));
FileClose(file);
return 0;
}
file->zip->offset = 0;
file->offset = 0;
file->mode = mode;
}
else
{
int fd = (mode == -1) ? shm_open("/vdsk", O_CREAT | O_RDWR | O_TRUNC | O_CLOEXEC, 0777) : open(full_path, mode | O_CLOEXEC, 0777);
if (fd <= 0)
{
if(!mute) printf("FileOpenEx(open) File:%s, error: %s.\n", full_path, strerror(errno));
return 0;
}
const char *fmode = mode & O_RDWR ? "w+" : "r";
file->filp = fdopen(fd, fmode);
if (!file->filp)
{
if(!mute) printf("FileOpenEx(fdopen) File:%s, error: %s.\n", full_path, strerror(errno));
close(fd);
return 0;
}
if (mode == -1)
{
file->type = 1;
file->size = 0;
file->offset = 0;
file->mode = O_CREAT | O_RDWR | O_TRUNC;
}
else
{
struct stat64 st;
int ret = fstat64(fileno(file->filp), &st);
if (ret < 0)
{
if (!mute) printf("FileOpenEx(fstat) File:%s, error: %d.\n", full_path, ret);
FileClose(file);
return 0;
}
file->size = st.st_size;
if (st.st_rdev && !st.st_size) //for special files we need an ioctl call to get the correct size
{
unsigned long long blksize;
int ret = ioctl(fd, BLKGETSIZE64, &blksize);
if (ret < 0)
{
if (!mute) printf("FileOpenEx(ioctl) File:%s, error: %d.\n", full_path, ret);
FileClose(file);
return 0;
}
file->size = blksize;
}
file->offset = 0;
file->mode = mode;
}
}
//printf("opened %s, size %llu\n", full_path, file->size);
return 1;
}
__off64_t FileGetSize(fileTYPE *file)
{
if (file->filp)
{
struct stat64 st;
if (fstat64(fileno(file->filp), &st) < 0) return 0;
if (st.st_rdev && !st.st_size) //for special files we need an ioctl call to get the correct size
{
unsigned long long blksize;
int ret = ioctl(fileno(file->filp), BLKGETSIZE64, &blksize);
if (ret < 0) return 0;
return blksize;
}
return st.st_size;
}
else if (file->zip)
{
return file->size;
}
return 0;
}
int FileOpen(fileTYPE *file, const char *name, char mute)
{
return FileOpenEx(file, name, O_RDONLY, mute);
}
int FileSeek(fileTYPE *file, __off64_t offset, int origin)
{
if (file->filp)
{
__off64_t res = fseeko64(file->filp, offset, origin);
if (res < 0)
{
printf("Fail to seek the file: offset=%lld, %s.\n", offset, file->name);
return 0;
}
offset = ftello64(file->filp);
}
else if (file->zip)
{
if (origin == SEEK_CUR)
{
offset = file->zip->offset + offset;
}
else if (origin == SEEK_END)
{
offset = file->size - offset;
}
if (offset < file->zip->offset)
{
mz_zip_reader_extract_iter_state *iter = mz_zip_reader_extract_iter_new(&file->zip->archive, file->zip->index, 0);
if (!iter)
{
printf("FileSeek(mz_zip_reader_extract_iter_new) Failed to rewind iterator, error:%s\n",
mz_zip_get_error_string(mz_zip_get_last_error(&file->zip->archive)));
return 0;
}
mz_zip_reader_extract_iter_free(file->zip->iter);
file->zip->iter = iter;
file->zip->offset = 0;
}
static char buf[4*1024];
while (file->zip->offset < offset)
{
const size_t want_len = MIN((__off64_t)sizeof(buf), offset - file->zip->offset);
const size_t read_len = mz_zip_reader_extract_iter_read(file->zip->iter, buf, want_len);
file->zip->offset += read_len;
if (read_len < want_len)
{
printf("FileSeek(mz_zip_reader_extract_iter_read) Failed to advance iterator, error:%s\n",
mz_zip_get_error_string(mz_zip_get_last_error(&file->zip->archive)));
return 0;
}
}
}
else
{
return 0;
}
file->offset = offset;
return 1;
}
int FileSeekLBA(fileTYPE *file, uint32_t offset)
{
__off64_t off64 = offset;
off64 <<= 9;
return FileSeek(file, off64, SEEK_SET);
}
// Read with offset advancing
int FileReadAdv(fileTYPE *file, void *pBuffer, int length, int failres)
{
ssize_t ret = 0;
if (file->filp)
{
ret = fread(pBuffer, 1, length, file->filp);
if (ret < 0)
{
printf("FileReadAdv error(%d).\n", ret);
return failres;
}
}
else if (file->zip)
{
ret = mz_zip_reader_extract_iter_read(file->zip->iter, pBuffer, length);
if (!ret)
{
printf("FileReadEx(mz_zip_reader_extract_iter_read) Failed to read, error:%s\n",
mz_zip_get_error_string(mz_zip_get_last_error(&file->zip->archive)));
return failres;
}
file->zip->offset += ret;
}
else
{
printf("FileReadAdv error(unknown file type).\n");
return failres;
}
file->offset += ret;
return ret;
}
int FileReadSec(fileTYPE *file, void *pBuffer)
{
return FileReadAdv(file, pBuffer, 512);
}
// Write with offset advancing
int FileWriteAdv(fileTYPE *file, void *pBuffer, int length, int failres)
{
int ret;
if (file->filp)
{
ret = fwrite(pBuffer, 1, length, file->filp);
fflush(file->filp);
if (ret < 0)
{
printf("FileWriteAdv error(%d).\n", ret);
return failres;
}
file->offset += ret;
if (file->offset > file->size) file->size = FileGetSize(file);
return ret;
}
else if (file->zip)
{
printf("FileWriteAdv error(not supported for zip).\n");
return failres;
}
else
{
printf("FileWriteAdv error(unknown file type).\n");
return failres;
}
}
int FileWriteSec(fileTYPE *file, void *pBuffer)
{
return FileWriteAdv(file, pBuffer, 512);
}
int FileSave(const char *name, void *pBuffer, int size)
{
make_fullpath(name);
int fd = open(full_path, O_WRONLY | O_CREAT | O_TRUNC | O_SYNC, S_IRWXU | S_IRWXG | S_IRWXO);
if (fd < 0)
{
printf("FileSave(open) File:%s, error: %d.\n", full_path, fd);
return 0;
}
int ret = write(fd, pBuffer, size);
close(fd);
if (ret < 0)
{
printf("FileSave(write) File:%s, error: %d.\n", full_path, ret);
return 0;
}
return ret;
}
int FileDelete(const char *name)
{
make_fullpath(name);
printf("delete %s\n", full_path);
return !unlink(full_path);
}
int DirDelete(const char *name)
{
make_fullpath(name);
printf("rmdir %s\n", full_path);
return !rmdir(full_path);
}
int FileLoad(const char *name, void *pBuffer, int size)
{
fileTYPE f;
if (!FileOpen(&f, name)) return 0;
int ret = f.size;
if (pBuffer) ret = FileReadAdv(&f, pBuffer, size ? size : f.size);
FileClose(&f);
return ret;
}
int FileLoadConfig(const char *name, void *pBuffer, int size)
{
char path[256] = { CONFIG_DIR"/" };
strcat(path, name);
return FileLoad(path, pBuffer, size);
}
int FileSaveConfig(const char *name, void *pBuffer, int size)
{
char path[256] = { CONFIG_DIR };
const char *p;
while ((p = strchr(name, '/')))
{
strcat(path, "/");
strncat(path, name, p - name);
name = ++p;
FileCreatePath(path);
}
strcat(path, "/");
strcat(path, name);
return FileSave(path, pBuffer, size);
}
int FileDeleteConfig(const char *name)
{
char path[256] = { CONFIG_DIR"/" };
strcat(path, name);
return FileDelete(path);
}
int FileExists(const char *name, int use_zip)
{
return isPathRegularFile(name, use_zip);
}
int PathIsDir(const char *name, int use_zip)
{
return isPathDirectory(name, use_zip);
}
int FileCanWrite(const char *name)
{
make_fullpath(name);
if (FileIsZipped(full_path, nullptr, nullptr))
{
return 0;
}
struct stat64 st;
int ret = stat64(full_path, &st);
if (ret < 0)
{
printf("FileCanWrite(stat) File:%s, error: %d.\n", full_path, ret);
return 0;
}
//printf("FileCanWrite: mode=%04o.\n", st.st_mode);
return ((st.st_mode & S_IWUSR) != 0);
}
static void create_path(const char *base_dir, const char* sub_dir)
{
make_fullpath(base_dir);
mkdir(full_path, S_IRWXU | S_IRWXG | S_IRWXO);
strcat(full_path, "/");
strcat(full_path, sub_dir);
mkdir(full_path, S_IRWXU | S_IRWXG | S_IRWXO);
}
int FileCreatePath(const char *dir)
{
int res = 1;
if (!isPathDirectory(dir)) {
make_fullpath(dir);
res = !mkdir(full_path, S_IRWXU | S_IRWXG | S_IRWXO);
}
return res;
}
void FileGenerateScreenshotName(const char *name, char *out_name, int buflen)
{
create_path(SCREENSHOT_DIR, CoreName);
time_t t = time(NULL);
struct tm tm = *localtime(&t);
char datecode[32] = {};
if (tm.tm_year >= 119) // 2019 or up considered valid time
{
strftime(datecode, 31, "%Y%m%d_%H%M%S", &tm);
snprintf(out_name, buflen, "%s/%s/%s-%s.png", SCREENSHOT_DIR, CoreName, datecode, name[0] ? name : SCREENSHOT_DEFAULT);
}
else
{
for (int i = 1; i < 10000; i++)
{
snprintf(out_name, buflen, "%s/%s/NODATE-%s_%04d.png", SCREENSHOT_DIR, CoreName, name[0] ? name : SCREENSHOT_DEFAULT, i);
if (!getFileType(out_name)) return;
}
}
}
void FileGenerateSavePath(const char *name, char* out_name)
{
create_path(SAVE_DIR, CoreName);
sprintf(out_name, "%s/%s/", SAVE_DIR, CoreName);
char *fname = out_name + strlen(out_name);
const char *p = strrchr(name, '/');
if (p)
{
strcat(fname, p+1);
}
else
{
strcat(fname, name);
}
char *e = strrchr(fname, '.');
if (e)
{
strcpy(e,".sav");
}
else
{
strcat(fname, ".sav");
}
printf("SavePath=%s\n", out_name);
}
void FileGenerateSavestatePath(const char *name, char* out_name, int sufx)
{
create_path(SAVESTATE_DIR, CoreName);
sprintf(out_name, "%s/%s/", SAVESTATE_DIR, CoreName);
char *fname = out_name + strlen(out_name);
const char *p = strrchr(name, '/');
if (p)
{
strcat(fname, p + 1);
}
else
{
strcat(fname, name);
}
char *e = strrchr(fname, '.');
if (e) e[0] = 0;
if(sufx) sprintf(e, "_%d.ss", sufx);
else strcat(e, ".ss");
}
uint32_t getFileType(const char *name)
{
make_fullpath(name);
struct stat64 st;
if (stat64(full_path, &st)) return 0;
return st.st_mode;
}
int findPrefixDir(char *dir, size_t dir_len)
{
// Searches for the core's folder in the following order:
// /media/fat
// /media/usb<0..5>
// /media/usb<0..5>/games
// /media/fat/cifs
// /media/fat/cifs/games
// /media/fat/games/
// if the core folder is not found anywhere,
// it will be created in /media/fat/games/<dir>
static char temp_dir[1024];
for (int x = 0; x < 6; x++) {
snprintf(temp_dir, 1024, "%s%d/%s", "../usb", x, dir);
if (isPathDirectory(temp_dir)) {
printf("Found USB dir: %s\n", temp_dir);
strncpy(dir, temp_dir, dir_len);
return 1;
}
snprintf(temp_dir, 1024, "%s%d/%s/%s", "../usb", x, GAMES_DIR, dir);
if (isPathDirectory(temp_dir)) {
printf("Found USB dir: %s\n", temp_dir);
strncpy(dir, temp_dir, dir_len);
return 1;
}
}
snprintf(temp_dir, 1024, "%s/%s", CIFS_DIR, dir);
if (isPathDirectory(temp_dir)) {
printf("Found CIFS dir: %s\n", temp_dir);
strncpy(dir, temp_dir, dir_len);
return 1;
}
snprintf(temp_dir, 1024, "%s/%s/%s", CIFS_DIR, GAMES_DIR, dir);
if (isPathDirectory(temp_dir)) {
printf("Found CIFS dir: %s\n", temp_dir);
strncpy(dir, temp_dir, dir_len);
return 1;
}
if (isPathDirectory(dir)) {
printf("Found existing: %s\n", dir);
return 1;
}
snprintf(temp_dir, 1024, "%s/%s", GAMES_DIR, dir);
if (isPathDirectory(temp_dir)) {
printf("Found dir: %s\n", temp_dir);
strncpy(dir, temp_dir, dir_len);
return 1;
}
return 0;
}
void prefixGameDir(char *dir, size_t dir_len)
{
if (!findPrefixDir(dir, dir_len))
{
static char temp_dir[1024];
//FileCreatePath(GAMES_DIR);
snprintf(temp_dir, 1024, "%s/%s", GAMES_DIR, dir);
strncpy(dir, temp_dir, dir_len);
printf("Prefixed dir to %s\n", temp_dir);
}
}
static int device = 0;
static int usbnum = 0;
const char *getStorageDir(int dev)
{
static char path[32];
if (!dev) return "/media/fat";
sprintf(path, "/media/usb%d", usbnum);
return path;
}
const char *getRootDir()
{
return getStorageDir(device);
}
const char *getFullPath(const char *name)
{
make_fullpath(name);
return full_path;
}
void setStorage(int dev)
{
device = 0;
FileSave(CONFIG_DIR"/device.bin", &dev, sizeof(int));
fpga_load_rbf("menu.rbf");
}
static int orig_device = 0;
int getStorage(int from_setting)
{
return from_setting ? orig_device : device;
}
int isPathMounted(int n)
{
char path[32];
sprintf(path, "/media/usb%d", n);
struct stat file_stat;
struct stat parent_stat;
if (-1 == stat(path, &file_stat))
{
printf("failed to stat %s\n", path);
return 0;
}
if (!(file_stat.st_mode & S_IFDIR))
{
printf("%s is not a directory.\n", path);
return 0;
}
if (-1 == stat("/media", &parent_stat))
{
printf("failed to stat /media\n");
return 0;
}
if (file_stat.st_dev != parent_stat.st_dev ||
(file_stat.st_dev == parent_stat.st_dev &&
file_stat.st_ino == parent_stat.st_ino))
{
printf("%s IS a mountpoint.\n", path);
struct statfs fs_stat;
if (!statfs(path, &fs_stat))
{
printf("%s is FS: 0x%08X\n", path, fs_stat.f_type);
if (fs_stat.f_type != EXT4_SUPER_MAGIC)
{
printf("%s is not EXT2/3/4.\n", path);
return 1;
}
}
}
printf("%s is NOT a VFAT mountpoint.\n", path);
return 0;
}
int isUSBMounted()