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fs: only mkdir and chown if not exists

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This commit is contained in:
Matthew Penner
2021-02-10 13:56:48 -07:00
parent 683c766d0f
commit 5c56ddf5d6
2 changed files with 17 additions and 16 deletions
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25
server/filesystem/filesystem.go
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@@ -92,13 +92,16 @@ func (fs *Filesystem) Touch(p string, flag int) (*os.File, error) {
if !errors.Is(err, os.ErrNotExist) {
return nil, errors.Wrap(err, "server/filesystem: touch: failed to open file handle")
}
// Create the path leading up to the file we're trying to create, setting the final perms
// on it as we go.
if err := os.MkdirAll(filepath.Dir(cleaned), 0755); err != nil {
return nil, errors.Wrap(err, "server/filesystem: touch: failed to create directory tree")
}
if err := fs.Chown(filepath.Dir(cleaned)); err != nil {
return nil, err
// Only create and chown the directory if it doesn't exist.
if _, err := os.Stat(filepath.Dir(cleaned)); errors.Is(err, os.ErrNotExist) {
// Create the path leading up to the file we're trying to create, setting the final perms
// on it as we go.
if err := os.MkdirAll(filepath.Dir(cleaned), 0755); err != nil {
return nil, errors.Wrap(err, "server/filesystem: touch: failed to create directory tree")
}
if err := fs.Chown(filepath.Dir(cleaned)); err != nil {
return nil, err
}
}
o := &fileOpener{}
// Try to open the file now that we have created the pathing necessary for it, and then
@@ -154,8 +157,8 @@ func (fs *Filesystem) Writefile(p string, r io.Reader) error {
return err
}
// Touch the file and return the handle to it at this point. This will create the file
// and any necessary directories as needed.
// Touch the file and return the handle to it at this point. This will create the file,
// any necessary directories, and set the proper owner of the file.
file, err := fs.Touch(cleaned, os.O_RDWR|os.O_CREATE|os.O_TRUNC)
if err != nil {
return err
@@ -168,8 +171,6 @@ func (fs *Filesystem) Writefile(p string, r io.Reader) error {
// Adjust the disk usage to account for the old size and the new size of the file.
fs.addDisk(sz - currentSize)
// Finally, chown the file to ensure the permissions don't end up out-of-whack
// if we had just created it.
return fs.Chown(cleaned)
}
@@ -249,7 +250,7 @@ func (fs *Filesystem) Chown(path string) error {
err = godirwalk.Walk(cleaned, &godirwalk.Options{
Unsorted: true,
Callback: func(p string, e *godirwalk.Dirent) error {
// Do not attempt to chmod a symlink. Go's os.Chown function will affect the symlink
// Do not attempt to chown a symlink. Go's os.Chown function will affect the symlink
// so if it points to a location outside the data directory the user would be able to
// (un)intentionally modify that files permissions.
if e.IsSymlink() {