--- /dev/null
+/*
+ * Copyright (c) 1996, 1998-2005, 2008, 2009-2010
+ * Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
+ */
+
+#ifndef _SUDO_MISSING_H
+#define _SUDO_MISSING_H
+
+#include <stdio.h>
+#include <stdarg.h>
+
+/*
+ * Macros and functions that may be missing on some operating systems.
+ */
+
+/* Define away __attribute__ for non-gcc or old gcc */
+#if !defined(__GNUC__) || __GNUC__ < 2 || __GNUC__ == 2 && __GNUC_MINOR__ < 5
+# define __attribute__(x)
+#endif
+
+/* For catching format string mismatches */
+#ifndef __printflike
+# if defined(__GNUC__) && (__GNUC__ > 2 || __GNUC__ == 2 && __GNUC_MINOR__ >= 7)
+# define __printflike(f, v) __attribute__((__format__ (__printf__, f, v)))
+# else
+# define __printflike(f, v)
+# endif
+#endif
+
+/*
+ * Some systems lack full limit definitions.
+ */
+#ifndef OPEN_MAX
+# define OPEN_MAX 256
+#endif
+
+#ifndef INT_MAX
+# define INT_MAX 0x7fffffff
+#endif
+
+#ifndef PATH_MAX
+# ifdef MAXPATHLEN
+# define PATH_MAX MAXPATHLEN
+# else
+# ifdef _POSIX_PATH_MAX
+# define PATH_MAX _POSIX_PATH_MAX
+# else
+# define PATH_MAX 1024
+# endif
+# endif
+#endif
+
+#ifndef MAXHOSTNAMELEN
+# define MAXHOSTNAMELEN 64
+#endif
+
+/*
+ * Posix versions for those without...
+ */
+#ifndef _S_IFMT
+# define _S_IFMT S_IFMT
+#endif /* _S_IFMT */
+#ifndef _S_IFREG
+# define _S_IFREG S_IFREG
+#endif /* _S_IFREG */
+#ifndef _S_IFDIR
+# define _S_IFDIR S_IFDIR
+#endif /* _S_IFDIR */
+#ifndef _S_IFLNK
+# define _S_IFLNK S_IFLNK
+#endif /* _S_IFLNK */
+#ifndef S_ISREG
+# define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
+#endif /* S_ISREG */
+#ifndef S_ISDIR
+# define S_ISDIR(m) (((m) & _S_IFMT) == _S_IFDIR)
+#endif /* S_ISDIR */
+
+/*
+ * Some OS's may not have this.
+ */
+#ifndef S_IRWXU
+# define S_IRWXU 0000700 /* rwx for owner */
+#endif /* S_IRWXU */
+
+/*
+ * These should be defined in <unistd.h> but not everyone has them.
+ */
+#ifndef STDIN_FILENO
+# define STDIN_FILENO 0
+#endif
+#ifndef STDOUT_FILENO
+# define STDOUT_FILENO 1
+#endif
+#ifndef STDERR_FILENO
+# define STDERR_FILENO 2
+#endif
+
+/*
+ * BSD defines these in <sys/param.h> but others may not.
+ */
+#ifndef MIN
+# define MIN(a,b) (((a)<(b))?(a):(b))
+#endif
+#ifndef MAX
+# define MAX(a,b) (((a)>(b))?(a):(b))
+#endif
+
+/*
+ * Older systems may be missing stddef.h and/or offsetof macro
+ */
+#ifndef offsetof
+# ifdef __offsetof
+# define offsetof(type, field) __offsetof(type, field)
+# else
+# define offsetof(type, field) ((size_t)(&((type *)0)->field))
+# endif
+#endif
+
+/*
+ * Simple isblank() macro and function for systems without it.
+ */
+#ifndef HAVE_ISBLANK
+int isblank(int);
+# define isblank(_x) ((_x) == ' ' || (_x) == '\t')
+#endif
+
+/*
+ * NCR's SVr4 has _innetgr(3) instead of innetgr(3) for some reason.
+ */
+#ifdef HAVE__INNETGR
+# define innetgr(n, h, u, d) (_innetgr(n, h, u, d))
+# define HAVE_INNETGR 1
+#endif /* HAVE__INNETGR */
+
+/*
+ * On POSIX systems, O_NOCTTY is the default so some OS's may lack this define.
+ */
+#ifndef O_NOCTTY
+# define O_NOCTTY 0
+#endif /* O_NOCTTY */
+
+/*
+ * Add IRIX-like sigaction_t for those without it.
+ * SA_RESTART is not required by POSIX; SunOS has SA_INTERRUPT instead.
+ */
+#ifndef HAVE_SIGACTION_T
+typedef struct sigaction sigaction_t;
+#endif
+#ifndef SA_INTERRUPT
+# define SA_INTERRUPT 0
+#endif
+#ifndef SA_RESTART
+# define SA_RESTART 0
+#endif
+
+/*
+ * If dirfd() does not exists, hopefully dd_fd does.
+ */
+#if !defined(HAVE_DIRFD) && defined(HAVE_DD_FD)
+# define dirfd(_d) ((_d)->dd_fd)
+# define HAVE_DIRFD
+#endif
+
+/*
+ * Define futimes() in terms of futimesat() if needed.
+ */
+#if !defined(HAVE_FUTIMES) && defined(HAVE_FUTIMESAT)
+# define futimes(_f, _tv) futimesat(_f, NULL, _tv)
+# define HAVE_FUTIMES
+#endif
+
+#if !defined(HAVE_KILLPG) && !defined(killpg)
+# define killpg(s) kill(-(s))
+#endif
+
+/*
+ * If we lack getprogname(), emulate with __progname if possible.
+ * Otherwise, add a prototype for use with our own getprogname.c.
+ */
+#ifndef HAVE_GETPROGNAME
+# ifdef HAVE___PROGNAME
+extern const char *__progname;
+# define getprogname() (__progname)
+# else
+const char *getprogname(void);
+void setprogname(const char *);
+#endif /* HAVE___PROGNAME */
+#endif /* !HAVE_GETPROGNAME */
+
+/*
+ * Declare errno if errno.h doesn't do it for us.
+ */
+#if defined(HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO
+extern int errno;
+#endif /* !HAVE_DECL_ERRNO */
+
+#ifndef timevalclear
+# define timevalclear(tv) ((tv)->tv_sec = (tv)->tv_usec = 0)
+#endif
+#ifndef timevalisset
+# define timevalisset(tv) ((tv)->tv_sec || (tv)->tv_usec)
+#endif
+#ifndef timevalcmp
+# define timevalcmp(tv1, tv2, op) \
+ (((tv1)->tv_sec == (tv2)->tv_sec) ? \
+ ((tv1)->tv_usec op (tv2)->tv_usec) : \
+ ((tv1)->tv_sec op (tv2)->tv_sec))
+#endif
+#ifndef timevaladd
+# define timevaladd(tv1, tv2) \
+ do { \
+ (tv1)->tv_sec += (tv2)->tv_sec; \
+ (tv1)->tv_usec += (tv2)->tv_usec; \
+ if ((tv1)->tv_usec >= 1000000) { \
+ (tv1)->tv_sec++; \
+ (tv1)->tv_usec -= 1000000; \
+ } \
+ } while (0)
+#endif
+#ifndef timevalsub
+# define timevalsub(tv1, tv2) \
+ do { \
+ (tv1)->tv_sec -= (tv2)->tv_sec; \
+ (tv1)->tv_usec -= (tv2)->tv_usec; \
+ if ((tv1)->tv_usec < 0) { \
+ (tv1)->tv_sec--; \
+ (tv1)->tv_usec += 1000000; \
+ } \
+ } while (0)
+#endif
+
+/* Not all systems define NSIG in signal.h */
+#if !defined(NSIG)
+# if defined(_NSIG)
+# define NSIG _NSIG
+# elif defined(__NSIG)
+# define NSIG __NSIG
+# else
+# define NSIG 64
+# endif
+#endif
+
+#ifndef WCOREDUMP
+# define WCOREDUMP(x) ((x) & 0x80)
+#endif
+
+#ifndef HAVE_SETEUID
+# if defined(HAVE_SETRESUID)
+# define seteuid(u) setresuid(-1, (u), -1)
+# define setegid(g) setresgid(-1, (g), -1)
+# define HAVE_SETEUID 1
+# elif defined(HAVE_SETREUID)
+# define seteuid(u) setreuid(-1, (u))
+# define setegid(g) setregid(-1, (g))
+# define HAVE_SETEUID 1
+# endif
+#endif /* HAVE_SETEUID */
+
+/*
+ * HP-UX does not declare innetgr() or getdomainname().
+ * Solaris does not declare getdomainname().
+ */
+#if defined(__hpux)
+int innetgr(const char *, const char *, const char *, const char *);
+#endif
+#if defined(__hpux) || defined(__sun)
+int getdomainname(char *, size_t);
+#endif
+
+/* Functions "missing" from libc. */
+
+struct timeval;
+struct timespec;
+
+#ifndef HAVE_CLOSEFROM
+void closefrom(int);
+#endif
+#ifndef HAVE_GETCWD
+char *getcwd(char *, size_t size);
+#endif
+#ifndef HAVE_GETGROUPLIST
+int getgrouplist(const char *, gid_t, gid_t *, int *);
+#endif
+#ifndef HAVE_GETLINE
+ssize_t getline(char **, size_t *, FILE *);
+#endif
+#ifndef HAVE_UTIMES
+int utimes(const char *, const struct timeval *);
+#endif
+#ifdef HAVE_FUTIME
+int futimes(int, const struct timeval *);
+#endif
+#ifndef HAVE_SNPRINTF
+int snprintf(char *, size_t, const char *, ...) __printflike(3, 4);
+#endif
+#ifndef HAVE_VSNPRINTF
+int vsnprintf(char *, size_t, const char *, va_list) __printflike(3, 0);
+#endif
+#ifndef HAVE_ASPRINTF
+int asprintf(char **, const char *, ...) __printflike(2, 3);
+#endif
+#ifndef HAVE_VASPRINTF
+int vasprintf(char **, const char *, va_list) __printflike(2, 0);
+#endif
+#ifndef HAVE_STRLCAT
+size_t strlcat(char *, const char *, size_t);
+#endif
+#ifndef HAVE_STRLCPY
+size_t strlcpy(char *, const char *, size_t);
+#endif
+#ifndef HAVE_MEMRCHR
+void *memrchr(const void *, int, size_t);
+#endif
+#ifndef HAVE_MKDTEMP
+char *mkdtemp(char *);
+#endif
+#ifndef HAVE_MKSTEMPS
+int mkstemps(char *, int);
+#endif
+#ifndef HAVE_NANOSLEEP
+int nanosleep(const struct timespec *, struct timespec *);
+#endif
+#ifndef HAVE_PW_DUP
+struct passwd *pw_dup(const struct passwd *);
+#endif
+#ifndef HAVE_SETENV
+int setenv(const char *, const char *, int);
+#endif
+#ifndef HAVE_UNSETENV
+int unsetenv(const char *);
+#endif
+#ifndef HAVE_STRSIGNAL
+char *strsignal(int);
+#endif
+
+#endif /* _SUDO_MISSING_H */