comparison mercurial/util.py @ 5739:45fa7b1c5d4c

checkexec: fix VFAT tempfile droppings with more modern Linux kernels

More recent Linux kernels don't pretend to allow any bogus chmods on
VFAT.

5738:2a54e2b177b6

    """
    Check whether the given path is on a filesystem with UNIX-like exec flags

    Requires a directory (like /foo/.hg)
    """
    try:
        EXECFLAGS = stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH
        fh, fn = tempfile.mkstemp("", "", path)
        os.close(fh)
        m = os.stat(fn).st_mode
        # VFAT on Linux can flip mode but it doesn't persist a FS remount.
        # frequently we can detect it if files are created with exec bit on.
        new_file_has_exec = m & EXECFLAGS
        os.chmod(fn, m ^ EXECFLAGS)
        exec_flags_cannot_flip = (os.stat(fn).st_mode == m)
        os.unlink(fn)
    except (IOError,OSError):
        # we don't care, the user probably won't be able to commit anyway
        return False
    return not (new_file_has_exec or exec_flags_cannot_flip)

def execfunc(path, fallback):

5739:45fa7b1c5d4c

    """
    Check whether the given path is on a filesystem with UNIX-like exec flags

    Requires a directory (like /foo/.hg)
    """

    # VFAT on some Linux versions can flip mode but it doesn't persist
    # a FS remount. Frequently we can detect it if files are created
    # with exec bit on.

    try:
        EXECFLAGS = stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH
        fh, fn = tempfile.mkstemp("", "", path)
        try:
            os.close(fh)
            m = os.stat(fn).st_mode & 0777
            new_file_has_exec = m & EXECFLAGS
            os.chmod(fn, m ^ EXECFLAGS)
            exec_flags_cannot_flip = (os.stat(fn).st_mode == m)
        finally:
            os.unlink(fn)
    except (IOError, OSError):
        # we don't care, the user probably won't be able to commit anyway
        return False
    return not (new_file_has_exec or exec_flags_cannot_flip)

def execfunc(path, fallback):