Annotation of embedaddon/sudo/include/missing.h, revision 1.1.1.3
1.1 misho 1: /*
2: * Copyright (c) 1996, 1998-2005, 2008, 2009-2010
3: * Todd C. Miller <Todd.Miller@courtesan.com>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
8: *
9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16: *
17: * Sponsored in part by the Defense Advanced Research Projects
18: * Agency (DARPA) and Air Force Research Laboratory, Air Force
19: * Materiel Command, USAF, under agreement number F39502-99-1-0512.
20: */
21:
22: #ifndef _SUDO_MISSING_H
23: #define _SUDO_MISSING_H
24:
25: #include <stdio.h>
26: #include <stdarg.h>
27:
28: /*
29: * Macros and functions that may be missing on some operating systems.
30: */
31:
1.1.1.3 ! misho 32: #ifndef __GNUC_PREREQ__
! 33: # ifdef __GNUC__
! 34: # define __GNUC_PREREQ__(ma, mi) \
! 35: ((__GNUC__ > (ma)) || (__GNUC__ == (ma) && __GNUC_MINOR__ >= (mi)))
! 36: # else
! 37: # define __GNUC_PREREQ__(ma, mi) 0
! 38: # endif
! 39: #endif
! 40:
1.1 misho 41: /* Define away __attribute__ for non-gcc or old gcc */
1.1.1.3 ! misho 42: #if !defined(__attribute__) && !__GNUC_PREREQ__(2, 5)
1.1 misho 43: # define __attribute__(x)
44: #endif
45:
46: /* For catching format string mismatches */
47: #ifndef __printflike
1.1.1.3 ! misho 48: # if __GNUC_PREREQ__(2, 7)
1.1 misho 49: # define __printflike(f, v) __attribute__((__format__ (__printf__, f, v)))
50: # else
51: # define __printflike(f, v)
52: # endif
53: #endif
54:
1.1.1.3 ! misho 55: #ifndef __dso_public
! 56: # ifdef HAVE_DSO_VISIBILITY
! 57: # if defined(__GNUC__)
! 58: # define __dso_public __attribute__((__visibility__("default")))
! 59: # define __dso_hidden __attribute__((__visibility__("hidden")))
! 60: # elif defined(__SUNPRO_C)
! 61: # define __dso_public __global
! 62: # define __dso_hidden __hidden
! 63: # else
! 64: # define __dso_public __declspec(dllexport)
! 65: # define __dso_hidden
! 66: # endif
! 67: # else
! 68: # define __dso_public
! 69: # define __dso_hidden
! 70: # endif
! 71: #endif
! 72:
1.1 misho 73: /*
74: * Some systems lack full limit definitions.
75: */
76: #ifndef OPEN_MAX
77: # define OPEN_MAX 256
78: #endif
79:
80: #ifndef INT_MAX
81: # define INT_MAX 0x7fffffff
82: #endif
83:
84: #ifndef PATH_MAX
85: # ifdef MAXPATHLEN
86: # define PATH_MAX MAXPATHLEN
87: # else
88: # ifdef _POSIX_PATH_MAX
89: # define PATH_MAX _POSIX_PATH_MAX
90: # else
91: # define PATH_MAX 1024
92: # endif
93: # endif
94: #endif
95:
96: #ifndef MAXHOSTNAMELEN
97: # define MAXHOSTNAMELEN 64
98: #endif
99:
100: /*
101: * Posix versions for those without...
102: */
103: #ifndef _S_IFMT
104: # define _S_IFMT S_IFMT
105: #endif /* _S_IFMT */
106: #ifndef _S_IFREG
107: # define _S_IFREG S_IFREG
108: #endif /* _S_IFREG */
109: #ifndef _S_IFDIR
110: # define _S_IFDIR S_IFDIR
111: #endif /* _S_IFDIR */
112: #ifndef _S_IFLNK
113: # define _S_IFLNK S_IFLNK
114: #endif /* _S_IFLNK */
115: #ifndef S_ISREG
116: # define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
117: #endif /* S_ISREG */
118: #ifndef S_ISDIR
119: # define S_ISDIR(m) (((m) & _S_IFMT) == _S_IFDIR)
120: #endif /* S_ISDIR */
121:
122: /*
123: * Some OS's may not have this.
124: */
125: #ifndef S_IRWXU
126: # define S_IRWXU 0000700 /* rwx for owner */
127: #endif /* S_IRWXU */
128:
129: /*
130: * These should be defined in <unistd.h> but not everyone has them.
131: */
132: #ifndef STDIN_FILENO
133: # define STDIN_FILENO 0
134: #endif
135: #ifndef STDOUT_FILENO
136: # define STDOUT_FILENO 1
137: #endif
138: #ifndef STDERR_FILENO
139: # define STDERR_FILENO 2
140: #endif
141:
142: /*
143: * BSD defines these in <sys/param.h> but others may not.
144: */
145: #ifndef MIN
146: # define MIN(a,b) (((a)<(b))?(a):(b))
147: #endif
148: #ifndef MAX
149: # define MAX(a,b) (((a)>(b))?(a):(b))
150: #endif
151:
152: /*
1.1.1.2 misho 153: * Older systems may be missing stddef.h and/or offsetof macro
154: */
155: #ifndef offsetof
156: # ifdef __offsetof
157: # define offsetof(type, field) __offsetof(type, field)
158: # else
159: # define offsetof(type, field) ((size_t)(&((type *)0)->field))
160: # endif
161: #endif
162:
163: /*
1.1 misho 164: * Simple isblank() macro and function for systems without it.
165: */
166: #ifndef HAVE_ISBLANK
167: int isblank(int);
168: # define isblank(_x) ((_x) == ' ' || (_x) == '\t')
169: #endif
170:
171: /*
172: * NCR's SVr4 has _innetgr(3) instead of innetgr(3) for some reason.
173: */
174: #ifdef HAVE__INNETGR
175: # define innetgr(n, h, u, d) (_innetgr(n, h, u, d))
176: # define HAVE_INNETGR 1
177: #endif /* HAVE__INNETGR */
178:
179: /*
180: * On POSIX systems, O_NOCTTY is the default so some OS's may lack this define.
181: */
182: #ifndef O_NOCTTY
183: # define O_NOCTTY 0
184: #endif /* O_NOCTTY */
185:
186: /*
187: * Add IRIX-like sigaction_t for those without it.
188: * SA_RESTART is not required by POSIX; SunOS has SA_INTERRUPT instead.
189: */
190: #ifndef HAVE_SIGACTION_T
191: typedef struct sigaction sigaction_t;
192: #endif
193: #ifndef SA_INTERRUPT
194: # define SA_INTERRUPT 0
195: #endif
196: #ifndef SA_RESTART
197: # define SA_RESTART 0
198: #endif
199:
200: /*
201: * If dirfd() does not exists, hopefully dd_fd does.
202: */
203: #if !defined(HAVE_DIRFD) && defined(HAVE_DD_FD)
204: # define dirfd(_d) ((_d)->dd_fd)
205: # define HAVE_DIRFD
206: #endif
207:
208: /*
209: * Define futimes() in terms of futimesat() if needed.
210: */
211: #if !defined(HAVE_FUTIMES) && defined(HAVE_FUTIMESAT)
212: # define futimes(_f, _tv) futimesat(_f, NULL, _tv)
213: # define HAVE_FUTIMES
214: #endif
215:
216: #if !defined(HAVE_KILLPG) && !defined(killpg)
217: # define killpg(s) kill(-(s))
218: #endif
219:
220: /*
221: * If we lack getprogname(), emulate with __progname if possible.
222: * Otherwise, add a prototype for use with our own getprogname.c.
223: */
224: #ifndef HAVE_GETPROGNAME
225: # ifdef HAVE___PROGNAME
226: extern const char *__progname;
227: # define getprogname() (__progname)
228: # else
229: const char *getprogname(void);
230: void setprogname(const char *);
231: #endif /* HAVE___PROGNAME */
232: #endif /* !HAVE_GETPROGNAME */
233:
234: /*
235: * Declare errno if errno.h doesn't do it for us.
236: */
237: #if defined(HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO
238: extern int errno;
239: #endif /* !HAVE_DECL_ERRNO */
240:
241: #ifndef timevalclear
242: # define timevalclear(tv) ((tv)->tv_sec = (tv)->tv_usec = 0)
243: #endif
244: #ifndef timevalisset
245: # define timevalisset(tv) ((tv)->tv_sec || (tv)->tv_usec)
246: #endif
247: #ifndef timevalcmp
248: # define timevalcmp(tv1, tv2, op) \
249: (((tv1)->tv_sec == (tv2)->tv_sec) ? \
250: ((tv1)->tv_usec op (tv2)->tv_usec) : \
251: ((tv1)->tv_sec op (tv2)->tv_sec))
252: #endif
253: #ifndef timevaladd
254: # define timevaladd(tv1, tv2) \
255: do { \
256: (tv1)->tv_sec += (tv2)->tv_sec; \
257: (tv1)->tv_usec += (tv2)->tv_usec; \
258: if ((tv1)->tv_usec >= 1000000) { \
259: (tv1)->tv_sec++; \
260: (tv1)->tv_usec -= 1000000; \
261: } \
262: } while (0)
263: #endif
264: #ifndef timevalsub
265: # define timevalsub(tv1, tv2) \
266: do { \
267: (tv1)->tv_sec -= (tv2)->tv_sec; \
268: (tv1)->tv_usec -= (tv2)->tv_usec; \
269: if ((tv1)->tv_usec < 0) { \
270: (tv1)->tv_sec--; \
271: (tv1)->tv_usec += 1000000; \
272: } \
273: } while (0)
274: #endif
275:
276: /* Not all systems define NSIG in signal.h */
277: #if !defined(NSIG)
278: # if defined(_NSIG)
279: # define NSIG _NSIG
280: # elif defined(__NSIG)
281: # define NSIG __NSIG
282: # else
283: # define NSIG 64
284: # endif
285: #endif
286:
1.1.1.3 ! misho 287: /* For sig2str() */
! 288: #ifndef SIG2STR_MAX
! 289: # define SIG2STR_MAX 32
! 290: #endif
! 291:
1.1 misho 292: #ifndef WCOREDUMP
293: # define WCOREDUMP(x) ((x) & 0x80)
294: #endif
295:
296: #ifndef HAVE_SETEUID
297: # if defined(HAVE_SETRESUID)
298: # define seteuid(u) setresuid(-1, (u), -1)
299: # define setegid(g) setresgid(-1, (g), -1)
300: # define HAVE_SETEUID 1
301: # elif defined(HAVE_SETREUID)
302: # define seteuid(u) setreuid(-1, (u))
303: # define setegid(g) setregid(-1, (g))
304: # define HAVE_SETEUID 1
305: # endif
306: #endif /* HAVE_SETEUID */
307:
308: /*
309: * HP-UX does not declare innetgr() or getdomainname().
310: * Solaris does not declare getdomainname().
311: */
312: #if defined(__hpux)
313: int innetgr(const char *, const char *, const char *, const char *);
314: #endif
315: #if defined(__hpux) || defined(__sun)
316: int getdomainname(char *, size_t);
317: #endif
318:
319: /* Functions "missing" from libc. */
320:
321: struct timeval;
322: struct timespec;
323:
324: #ifndef HAVE_CLOSEFROM
325: void closefrom(int);
326: #endif
327: #ifndef HAVE_GETCWD
328: char *getcwd(char *, size_t size);
329: #endif
330: #ifndef HAVE_GETGROUPLIST
331: int getgrouplist(const char *, gid_t, gid_t *, int *);
332: #endif
333: #ifndef HAVE_GETLINE
334: ssize_t getline(char **, size_t *, FILE *);
335: #endif
336: #ifndef HAVE_UTIMES
337: int utimes(const char *, const struct timeval *);
338: #endif
339: #ifdef HAVE_FUTIME
340: int futimes(int, const struct timeval *);
341: #endif
342: #ifndef HAVE_SNPRINTF
343: int snprintf(char *, size_t, const char *, ...) __printflike(3, 4);
344: #endif
345: #ifndef HAVE_VSNPRINTF
346: int vsnprintf(char *, size_t, const char *, va_list) __printflike(3, 0);
347: #endif
348: #ifndef HAVE_ASPRINTF
349: int asprintf(char **, const char *, ...) __printflike(2, 3);
350: #endif
351: #ifndef HAVE_VASPRINTF
352: int vasprintf(char **, const char *, va_list) __printflike(2, 0);
353: #endif
354: #ifndef HAVE_STRLCAT
355: size_t strlcat(char *, const char *, size_t);
356: #endif
357: #ifndef HAVE_STRLCPY
358: size_t strlcpy(char *, const char *, size_t);
359: #endif
360: #ifndef HAVE_MEMRCHR
361: void *memrchr(const void *, int, size_t);
362: #endif
363: #ifndef HAVE_MKDTEMP
364: char *mkdtemp(char *);
365: #endif
366: #ifndef HAVE_MKSTEMPS
367: int mkstemps(char *, int);
368: #endif
369: #ifndef HAVE_NANOSLEEP
370: int nanosleep(const struct timespec *, struct timespec *);
371: #endif
1.1.1.2 misho 372: #ifndef HAVE_PW_DUP
373: struct passwd *pw_dup(const struct passwd *);
374: #endif
1.1 misho 375: #ifndef HAVE_SETENV
376: int setenv(const char *, const char *, int);
377: #endif
378: #ifndef HAVE_UNSETENV
379: int unsetenv(const char *);
380: #endif
381: #ifndef HAVE_STRSIGNAL
382: char *strsignal(int);
383: #endif
1.1.1.3 ! misho 384: #ifndef HAVE_SIG2STR
! 385: int sig2str(int, char *);
! 386: #endif
1.1 misho 387:
388: #endif /* _SUDO_MISSING_H */
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