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instance method

FileTest#symlink?

File.symlink?(filepath) → true or false

static VALUE
rb_file_symlink_p(VALUE obj, VALUE fname)
{
#ifndef S_ISLNK
#  ifdef _S_ISLNK
#    define S_ISLNK(m) _S_ISLNK(m)
#  else
#    ifdef _S_IFLNK
#      define S_ISLNK(m) (((m) & S_IFMT) == _S_IFLNK)
#    else
#      ifdef S_IFLNK
#        define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
#      endif
#    endif
#  endif
#endif

#ifdef S_ISLNK
    struct stat st;

    FilePathValue(fname);
    fname = rb_str_encode_ospath(fname);
    if (lstat_without_gvl(StringValueCStr(fname), &st) < 0) return Qfalse;
    if (S_ISLNK(st.st_mode)) return Qtrue;
#endif

    return Qfalse;
}

Returns true if filepath points to a symbolic link, false otherwise:

Example

symlink = File.symlink('t.txt', 'symlink')
File.symlink?('symlink') # => true
File.symlink?('t.txt')   # => false

See also #sticky? #world_readable? #socket? #world_writable? also in 4.1 · 4.0 · 3.4 · 3.3 · 3.1 · 3.0

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