Linux: support openat() without readlinkat()

    linux/LinuxProcessList.c:1094:52: error: format specifies type 'char *' but the argument has type 'openat_arg_t' (aka 'int') [-Werror,-Wformat]
       xSnprintf(filename, sizeof(filename), "%s/cwd", procFd);
                                              ~~       ^~~~~~
                                              %d
    linux/LinuxProcessList.c:1333:44: error: format specifies type 'char *' but the argument has type 'openat_arg_t' (aka 'int') [-Werror,-Wformat]
       xSnprintf(path, sizeof(path), "%s/exe", procFd);
                                      ~~       ^~~~~~
                                      %d

Supersedes: #1025

1 files changed, 5 insertions, 0 deletions

diff --git a/Compat.h b/Compat.h
index 2b5e2052..1c4794e6 100644
--- a/Compat.h
+++ b/Compat.h
@@ -56,4 +56,9 @@ ssize_t Compat_readlinkat(int dirfd,
                           char* buf,
                           size_t bufsize);
 
+ssize_t Compat_readlink(openat_arg_t dirfd,
+                        const char* pathname,
+                        char* buf,
+                        size_t bufsize);
+
 #endif /* HEADER_Compat */