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-rw-r--r--src/operations.cc34
-rw-r--r--src/posix_extras.cc11
-rw-r--r--src/posix_extras.h5
3 files changed, 50 insertions, 0 deletions
diff --git a/src/operations.cc b/src/operations.cc
index 382974e..697f901 100644
--- a/src/operations.cc
+++ b/src/operations.cc
@@ -136,6 +136,39 @@ int Mknod(const char* const c_path, const mode_t mode,
}
}
+int Chmod(const char* const c_path, const mode_t mode) noexcept {
+ try {
+ const std::string path(c_path);
+ root_->ChModAt(path == "/" ? "." : EncodePath(path).c_str(), mode);
+ return 0;
+ } catch (const std::system_error& e) {
+ return -e.code().value();
+ } catch (...) {
+ LOG(ERROR) << "getattr: caught unexpected value";
+ return -ENOTRECOVERABLE;
+ }
+}
+
+int Rename(const char* const c_old_path,
+ const char* const c_new_path) noexcept {
+ try {
+ const std::string old_path(c_old_path);
+ const std::string new_path(c_new_path);
+ if (old_path == "/" || new_path == "/") {
+ return -EINVAL;
+ } else {
+ root_->RenameAt(EncodePath(old_path).c_str(),
+ EncodePath(new_path).c_str());
+ return 0;
+ }
+ } catch (const std::system_error& e) {
+ return -e.code().value();
+ } catch (...) {
+ LOG(ERROR) << "mknod: caught unexpected value";
+ return -ENOTRECOVERABLE;
+ }
+}
+
int Open(const char* const path, fuse_file_info* const file_info) noexcept {
return OpenResource<File>(path, file_info->flags, &file_info->fh);
}
@@ -302,6 +335,7 @@ fuse_operations FuseOperations(File* const root) {
result.fgetattr = &Fgetattr;
result.mknod = &Mknod;
+ result.rename = &Rename;
result.open = &Open;
result.read = &Read;
result.write = &Write;
diff --git a/src/posix_extras.cc b/src/posix_extras.cc
index 5fc60f6..17fe275 100644
--- a/src/posix_extras.cc
+++ b/src/posix_extras.cc
@@ -25,6 +25,7 @@
#include <dirent.h>
#include <fcntl.h>
#include <glog/logging.h>
+#include <stdio.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
@@ -129,6 +130,16 @@ std::vector<std::uint8_t> File::Read(off_t offset, size_t bytes) const {
return result;
}
+void File::RenameAt(const char* old_path, const char* new_path) const {
+ if (old_path[0] == '/' || new_path[0] == '/') {
+ throw std::invalid_argument("absolute path");
+ }
+
+ if (renameat(fd_, old_path, fd_, new_path) == -1) {
+ throw SystemError();
+ }
+}
+
void File::RmDirAt(const char* const path) const {
if (path[0] == '/') {
throw std::invalid_argument("absolute path");
diff --git a/src/posix_extras.h b/src/posix_extras.h
index 41117f2..b9e9da6 100644
--- a/src/posix_extras.h
+++ b/src/posix_extras.h
@@ -89,6 +89,11 @@ class File {
// fewer bytes are returned.
std::vector<std::uint8_t> Read(off_t, size_t) const;
+ // Renames a file from old_path to new_path. Both paths are interpreted
+ // relative to the file descriptor, and both must indeed be relative (i.e.,
+ // they must not start with '/').
+ void RenameAt(const char* old_path, const char* new_path) const;
+
// Removes the directory at the path relative to the file descriptor. The
// path must indeed be relative (i.e., it must not start with '/').
void RmDirAt(const char* path) const;