48 lines
2.5 KiB
Plaintext
48 lines
2.5 KiB
Plaintext
sudo porting hints:
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Before trying to port sudo to a new architecture, please join the
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sudo-workers mailing list (see the README) and ask if anyone has
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a port working or in-progress.
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Sudo should be fairly easy to port. In fact, now that it uses a configure
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script, most of the work should be done for you. The most problematic part
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is how set*uid() functions. If you have no seteuid() but do have setreuid()
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you can emulate seteuid() with a macro like the following:
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#define seteuid(__EUID) (setreuid((uid_t)-1, __EUID))
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This only affects the set_perms() function.
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Another possible pitfall is getdtablesize(2) which is used to get the maximum
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number of open files the process can have. If an OS has the POSIX sysconf(2)
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it will be used instead of getdtablesize(2). ulimit(2) or getrlimit(2) can
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also be used on some OS's. If all else fails you can use the value of
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NOFILE in <sys/param.h>.
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Sudo tries to clear the environment of dangerous envariables like LD_*
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to prevent shared library spoofing. If you are porting sudo to a new
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OS that has shared libraries you'll want to mask out the variables that
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allow one to change the shared library path. See badenv_table() in
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sudo.c to see how this is done for various OS's.
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It is possible that on a really weird system, tgetpass() may not compile.
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(The most common cause for this is that the "fd_set" type is not
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defined in a place that sudo expects it to be. If you can fine the
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header file where "fd_set" is typedef'd, have tgetpass.c include
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it and send in a bug report.)
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Alternately, it may compile but not work (nothing happens at Password: prompt).
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It is possible that your C library contains a broken or unusable crypt()
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function--try linking with -lcrypt if that exists. If all else fails
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you can run configure with the --with-getpass flag to use the system getpass().
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You'll lose the timeout feature but gain a working sudo.
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NOTE: s/key support will not work with most OS's getpass(3) routine.
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If you are trying to port to a system without standard Berkeley
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networking you may find that interfaces.c will not compile. This
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is most likely on OS's with STREAMS-based networking. It should be
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possible to make it work by modifying the ISC streams support
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(see the _ISC #ifdef's). However, if you don't care about ip address
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and network address support, you can just define STUB_LOAD_INTERFACES
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to get a do-nothing load_interfaces() stub function.
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If you port sudo to a new architecture, please send your changes to
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sudo-bugs@cs.colorado.edu
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