wxString
SfsEntry::resolve(void) const
{
if (isSymlink()) {
char resolved_path[PATH_MAX];
if (realpath(path_.fn_str(), resolved_path) != 0)
return wxString::FromAscii(resolved_path);
}
return (wxEmptyString);
}
bool
isLink(const bfs::path& path)
{
if (isSymlink(path)) {
return true;
}
#ifdef MACOSX
// aliases appear as regular files
if (isRegularFile(path)) {
FSRef ref;
if (FSPathMakeRef((const UInt8*)path.c_str(), &ref, NULL) == noErr) {
Boolean isAlias = false, isFolder = false;
if (FSIsAliasFile(&ref, &isAlias, &isFolder) == noErr) {
return isAlias;
}
}
}
#endif
return false;
}
/**
* Recursively visit all files / directories starting at the given directory.
*/
FileVisitor::VisitResult File::visitMe(const VisitOptions &options, unsigned maxDepth) const
{
FileVisitor::VisitResult vr = FileVisitor::VisitResult::CONTINUE;
if (isSymlink())
{
if (!options.followSymLinks)
return vr;
// visit the symlink location instead
char buf[PATH_MAX];
ssize_t s = readlink(getFullname().c_str(), buf, sizeof(buf));
if (s <= 0)
{
Log::perror(getFullname());
throw std::runtime_error(std::string("Cannot read a symlink ") + getFullname());
}
// terminate string
buf[s] = 0;
if (buf[0] == PATH_SEP_CHAR)
{
// absolute link location
File linked(buf);
return linked.visitMe(options, maxDepth);
}
else {
// relative link location
File linked(*this, buf);
return linked.visitMe(options, maxDepth);
}
}
if (isDirectory())
{
if (maxDepth > 0)
{
vr = options.visitor.visitDirectory(*this);
if (vr == FileVisitor::VisitResult::STOP)
return vr;
if (vr == FileVisitor::VisitResult::STOP_DIR) {
options.visitor.afterVisitDirectory(*this);
return FileVisitor::VisitResult::CONTINUE;
}
// recurse with max depth - 1
vr = recurseInto(options, maxDepth - 1);
if (vr == FileVisitor::VisitResult::STOP)
return vr;
// what to do at end of of directory
vr = options.visitor.afterVisitDirectory(*this);
}
}
else {
if (options.visitNonRegular || isRegularFile())
vr = options.visitor.visitFile(*this);
else
vr = FileVisitor::VisitResult::CONTINUE;
}
if (vr == FileVisitor::VisitResult::STOP)
return vr;
if (vr == FileVisitor::VisitResult::STOP_DIR)
return FileVisitor::VisitResult::CONTINUE;
return vr;
}
/** Get file attributes.
*
* Similar to stat(). The 'st_dev' and 'st_blksize' fields are
* ignored. The 'st_ino' field is ignored except if the 'use_ino'
* mount option is given.
*
* struct stat {
* dev_t st_dev; // ID of device containing file
* ino_t st_ino; // inode number
* mode_t st_mode; // protection
* nlink_t st_nlink; // number of hard links
* uid_t st_uid; // user ID of owner
* gid_t st_gid; // group ID of owner
* dev_t st_rdev; // device ID (if special file)
* off_t st_size; // total size, in bytes
* blksize_t st_blksize; // blocksize for file system I/O
* blkcnt_t st_blocks; // number of 512B blocks allocated
* time_t st_atime; // time of last access
* time_t st_mtime; // time of last modification
* time_t st_ctime; // time of last status change
* };
*/
static int fuse_getattr(const char *path, struct stat *buf)
{
#ifndef HIDE_COMPLETED
tolog(path);
tolog(" - getattr\n");
#endif
struct timeval tv;
if (gettimeofday(&tv, NULL) == 0)
{
buf->st_atime = tv.tv_sec;
buf->st_mtime = tv.tv_sec;
buf->st_ctime = tv.tv_sec;
}
buf->st_uid = FILE_UID;
buf->st_gid = FILE_GID;
if (isDirectory(path))
{
buf->st_mode = S_IFDIR | S_IRWXU;
buf->st_nlink = 2;
return 0;
}
if (isSymlink(path))
{
buf->st_mode = S_IFLNK | S_IRWXU;
buf->st_nlink = 1;
return 0;
}
if (isOffset(path))
{
// Even though it's read-only, the write flag is there in case
// a library we use requires write access. It won't be able to write to
// the file of course, but it will think it can.
buf->st_mode = S_IFREG | S_IRUSR | S_IWUSR;
buf->st_nlink = 1;
off_t offset = -1;
off_t length = -1;
sscanf(path + 1, "%llu-%llu", (unsigned long long *) &offset, (unsigned long long *) &length);
if ((length == -1) || (length > (mappedFile_size - offset)))
{
if (mappedFile_size < offset)
{
length = 0;
} else
{
length = mappedFile_size - offset;
}
}
buf->st_size = length;
buf->st_blocks = (buf->st_size + 511) / 512;
return 0;
}
if (isMetaFilename(path))
{
// While we are aware of such a beast, these are all zero sized.
buf->st_mode = S_IFREG | S_IRUSR | S_IWUSR;
buf->st_nlink = 1;
buf->st_size = 0;
buf->st_blocks = 0;
return 0;
}
// They might be enquiring about the usage file.
if (g_strcmp0(path, "/" USAGE_FILE) == 0)
{
buf->st_mode = S_IFREG | S_IRUSR | S_IWUSR;
buf->st_nlink = 1;
buf->st_size = strlen(USAGE_FILE_CONTENT);
buf->st_blocks = (buf->st_size + 511) / 512;
return 0;
}
return -ENOENT;
}