1#ifndef GIT_COMPAT_UTIL_H
2#define GIT_COMPAT_UTIL_H
3
4#define _FILE_OFFSET_BITS 64
5
6#ifndef FLEX_ARRAY
7/*
8 * See if our compiler is known to support flexible array members.
9 */
10#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && (!defined(__SUNPRO_C) || (__SUNPRO_C > 0x580))
11# define FLEX_ARRAY /* empty */
12#elif defined(__GNUC__)
13# if (__GNUC__ >= 3)
14# define FLEX_ARRAY /* empty */
15# else
16# define FLEX_ARRAY 0 /* older GNU extension */
17# endif
18#endif
19
20/*
21 * Otherwise, default to safer but a bit wasteful traditional style
22 */
23#ifndef FLEX_ARRAY
24# define FLEX_ARRAY 1
25#endif
26#endif
27
28#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
29#define bitsizeof(x) (CHAR_BIT * sizeof(x))
30
31#define maximum_signed_value_of_type(a) \
32 (INTMAX_MAX >> (bitsizeof(intmax_t) - bitsizeof(a)))
33
34#define maximum_unsigned_value_of_type(a) \
35 (UINTMAX_MAX >> (bitsizeof(uintmax_t) - bitsizeof(a)))
36
37/*
38 * Signed integer overflow is undefined in C, so here's a helper macro
39 * to detect if the sum of two integers will overflow.
40 *
41 * Requires: a >= 0, typeof(a) equals typeof(b)
42 */
43#define signed_add_overflows(a, b) \
44 ((b) > maximum_signed_value_of_type(a) - (a))
45
46#define unsigned_add_overflows(a, b) \
47 ((b) > maximum_unsigned_value_of_type(a) - (a))
48
49#ifdef __GNUC__
50#define TYPEOF(x) (__typeof__(x))
51#else
52#define TYPEOF(x)
53#endif
54
55#define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (bitsizeof(x) - (bits))))
56#define HAS_MULTI_BITS(i) ((i) & ((i) - 1)) /* checks if an integer has more than 1 bit set */
57
58#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
59
60/* Approximation of the length of the decimal representation of this type. */
61#define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1)
62
63#if defined(__sun__)
64 /*
65 * On Solaris, when _XOPEN_EXTENDED is set, its header file
66 * forces the programs to be XPG4v2, defeating any _XOPEN_SOURCE
67 * setting to say we are XPG5 or XPG6. Also on Solaris,
68 * XPG6 programs must be compiled with a c99 compiler, while
69 * non XPG6 programs must be compiled with a pre-c99 compiler.
70 */
71# if __STDC_VERSION__ - 0 >= 199901L
72# define _XOPEN_SOURCE 600
73# else
74# define _XOPEN_SOURCE 500
75# endif
76#elif !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__USLC__) && \
77 !defined(_M_UNIX) && !defined(__sgi) && !defined(__DragonFly__) && \
78 !defined(__TANDEM) && !defined(__QNX__)
79#define _XOPEN_SOURCE 600 /* glibc2 and AIX 5.3L need 500, OpenBSD needs 600 for S_ISLNK() */
80#define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */
81#endif
82#define _ALL_SOURCE 1
83#define _GNU_SOURCE 1
84#define _BSD_SOURCE 1
85#define _NETBSD_SOURCE 1
86#define _SGI_SOURCE 1
87
88#if defined(WIN32) && !defined(__CYGWIN__) /* Both MinGW and MSVC */
89# if defined (_MSC_VER)
90# define _WIN32_WINNT 0x0502
91# endif
92#define WIN32_LEAN_AND_MEAN /* stops windows.h including winsock.h */
93#include <winsock2.h>
94#include <windows.h>
95#define GIT_WINDOWS_NATIVE
96#endif
97
98#include <unistd.h>
99#include <stdio.h>
100#include <sys/stat.h>
101#include <fcntl.h>
102#include <stddef.h>
103#include <stdlib.h>
104#include <stdarg.h>
105#include <string.h>
106#ifdef HAVE_STRINGS_H
107#include <strings.h> /* for strcasecmp() */
108#endif
109#include <errno.h>
110#include <limits.h>
111#ifdef NEEDS_SYS_PARAM_H
112#include <sys/param.h>
113#endif
114#include <sys/types.h>
115#include <dirent.h>
116#include <sys/time.h>
117#include <time.h>
118#include <signal.h>
119#ifndef USE_WILDMATCH
120#include <fnmatch.h>
121#endif
122#include <assert.h>
123#include <regex.h>
124#include <utime.h>
125#include <syslog.h>
126#ifndef NO_SYS_POLL_H
127#include <sys/poll.h>
128#else
129#include <poll.h>
130#endif
131
132#if defined(__MINGW32__)
133/* pull in Windows compatibility stuff */
134#include "compat/mingw.h"
135#elif defined(_MSC_VER)
136#include "compat/msvc.h"
137#else
138#include <sys/wait.h>
139#include <sys/resource.h>
140#include <sys/socket.h>
141#include <sys/ioctl.h>
142#include <termios.h>
143#ifndef NO_SYS_SELECT_H
144#include <sys/select.h>
145#endif
146#include <netinet/in.h>
147#include <netinet/tcp.h>
148#include <arpa/inet.h>
149#include <netdb.h>
150#include <pwd.h>
151#include <sys/un.h>
152#ifndef NO_INTTYPES_H
153#include <inttypes.h>
154#else
155#include <stdint.h>
156#endif
157#ifdef NO_INTPTR_T
158/*
159 * On I16LP32, ILP32 and LP64 "long" is the save bet, however
160 * on LLP86, IL33LLP64 and P64 it needs to be "long long",
161 * while on IP16 and IP16L32 it is "int" (resp. "short")
162 * Size needs to match (or exceed) 'sizeof(void *)'.
163 * We can't take "long long" here as not everybody has it.
164 */
165typedef long intptr_t;
166typedef unsigned long uintptr_t;
167#endif
168#if defined(__CYGWIN__)
169#undef _XOPEN_SOURCE
170#include <grp.h>
171#define _XOPEN_SOURCE 600
172#else
173#undef _ALL_SOURCE /* AIX 5.3L defines a struct list with _ALL_SOURCE. */
174#include <grp.h>
175#define _ALL_SOURCE 1
176#endif
177#endif
178
179/* used on Mac OS X */
180#ifdef PRECOMPOSE_UNICODE
181#include "compat/precompose_utf8.h"
182#else
183#define precompose_str(in,i_nfd2nfc)
184#define precompose_argv(c,v)
185#define probe_utf8_pathname_composition(a,b)
186#endif
187
188#ifdef NEEDS_CLIPPED_WRITE
189ssize_t clipped_write(int fildes, const void *buf, size_t nbyte);
190#define write(x,y,z) clipped_write((x),(y),(z))
191#endif
192
193#ifdef MKDIR_WO_TRAILING_SLASH
194#define mkdir(a,b) compat_mkdir_wo_trailing_slash((a),(b))
195extern int compat_mkdir_wo_trailing_slash(const char*, mode_t);
196#endif
197
198#ifdef NO_STRUCT_ITIMERVAL
199struct itimerval {
200 struct timeval it_interval;
201 struct timeval it_value;
202}
203#endif
204
205#ifdef NO_SETITIMER
206#define setitimer(which,value,ovalue)
207#endif
208
209#ifndef NO_LIBGEN_H
210#include <libgen.h>
211#else
212#define basename gitbasename
213extern char *gitbasename(char *);
214#endif
215
216#ifndef NO_ICONV
217#include <iconv.h>
218#endif
219
220#ifndef NO_OPENSSL
221#include <openssl/ssl.h>
222#include <openssl/err.h>
223#endif
224
225/* On most systems <netdb.h> would have given us this, but
226 * not on some systems (e.g. z/OS).
227 */
228#ifndef NI_MAXHOST
229#define NI_MAXHOST 1025
230#endif
231
232#ifndef NI_MAXSERV
233#define NI_MAXSERV 32
234#endif
235
236/* On most systems <limits.h> would have given us this, but
237 * not on some systems (e.g. GNU/Hurd).
238 */
239#ifndef PATH_MAX
240#define PATH_MAX 4096
241#endif
242
243#ifndef PRIuMAX
244#define PRIuMAX "llu"
245#endif
246
247#ifndef PRIu32
248#define PRIu32 "u"
249#endif
250
251#ifndef PRIx32
252#define PRIx32 "x"
253#endif
254
255#ifndef PRIo32
256#define PRIo32 "o"
257#endif
258
259#ifndef PATH_SEP
260#define PATH_SEP ':'
261#endif
262
263#ifdef HAVE_PATHS_H
264#include <paths.h>
265#endif
266#ifndef _PATH_DEFPATH
267#define _PATH_DEFPATH "/usr/local/bin:/usr/bin:/bin"
268#endif
269
270#ifndef STRIP_EXTENSION
271#define STRIP_EXTENSION ""
272#endif
273
274#ifndef has_dos_drive_prefix
275#define has_dos_drive_prefix(path) 0
276#endif
277
278#ifndef is_dir_sep
279#define is_dir_sep(c) ((c) == '/')
280#endif
281
282#ifndef find_last_dir_sep
283#define find_last_dir_sep(path) strrchr(path, '/')
284#endif
285
286#if defined(__HP_cc) && (__HP_cc >= 61000)
287#define NORETURN __attribute__((noreturn))
288#define NORETURN_PTR
289#elif defined(__GNUC__) && !defined(NO_NORETURN)
290#define NORETURN __attribute__((__noreturn__))
291#define NORETURN_PTR __attribute__((__noreturn__))
292#elif defined(_MSC_VER)
293#define NORETURN __declspec(noreturn)
294#define NORETURN_PTR
295#else
296#define NORETURN
297#define NORETURN_PTR
298#ifndef __attribute__
299#define __attribute__(x)
300#endif
301#endif
302
303/* The sentinel attribute is valid from gcc version 4.0 */
304#if defined(__GNUC__) && (__GNUC__ >= 4)
305#define LAST_ARG_MUST_BE_NULL __attribute__((sentinel))
306#else
307#define LAST_ARG_MUST_BE_NULL
308#endif
309
310#include "compat/bswap.h"
311
312#ifdef USE_WILDMATCH
313#include "wildmatch.h"
314#define FNM_PATHNAME WM_PATHNAME
315#define FNM_CASEFOLD WM_CASEFOLD
316#define FNM_NOMATCH WM_NOMATCH
317static inline int fnmatch(const char *pattern, const char *string, int flags)
318{
319 return wildmatch(pattern, string, flags, NULL);
320}
321#endif
322
323/* General helper functions */
324extern void vreportf(const char *prefix, const char *err, va_list params);
325extern void vwritef(int fd, const char *prefix, const char *err, va_list params);
326extern NORETURN void usage(const char *err);
327extern NORETURN void usagef(const char *err, ...) __attribute__((format (printf, 1, 2)));
328extern NORETURN void die(const char *err, ...) __attribute__((format (printf, 1, 2)));
329extern NORETURN void die_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
330extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
331extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
332
333#ifndef NO_OPENSSL
334#ifdef APPLE_COMMON_CRYPTO
335#include "compat/apple-common-crypto.h"
336#else
337#include <openssl/evp.h>
338#include <openssl/hmac.h>
339#endif /* APPLE_COMMON_CRYPTO */
340#include <openssl/x509v3.h>
341#endif /* NO_OPENSSL */
342
343/*
344 * Let callers be aware of the constant return value; this can help
345 * gcc with -Wuninitialized analysis. We restrict this trick to gcc, though,
346 * because some compilers may not support variadic macros. Since we're only
347 * trying to help gcc, anyway, it's OK; other compilers will fall back to
348 * using the function as usual.
349 */
350#if defined(__GNUC__) && ! defined(__clang__)
351#define error(...) (error(__VA_ARGS__), -1)
352#endif
353
354extern void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params));
355extern void set_error_routine(void (*routine)(const char *err, va_list params));
356extern void set_die_is_recursing_routine(int (*routine)(void));
357
358extern int prefixcmp(const char *str, const char *prefix);
359extern int suffixcmp(const char *str, const char *suffix);
360
361static inline const char *skip_prefix(const char *str, const char *prefix)
362{
363 size_t len = strlen(prefix);
364 return strncmp(str, prefix, len) ? NULL : str + len;
365}
366
367#if defined(NO_MMAP) || defined(USE_WIN32_MMAP)
368
369#ifndef PROT_READ
370#define PROT_READ 1
371#define PROT_WRITE 2
372#define MAP_PRIVATE 1
373#endif
374
375#define mmap git_mmap
376#define munmap git_munmap
377extern void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset);
378extern int git_munmap(void *start, size_t length);
379
380#else /* NO_MMAP || USE_WIN32_MMAP */
381
382#include <sys/mman.h>
383
384#endif /* NO_MMAP || USE_WIN32_MMAP */
385
386#ifdef NO_MMAP
387
388/* This value must be multiple of (pagesize * 2) */
389#define DEFAULT_PACKED_GIT_WINDOW_SIZE (1 * 1024 * 1024)
390
391#else /* NO_MMAP */
392
393/* This value must be multiple of (pagesize * 2) */
394#define DEFAULT_PACKED_GIT_WINDOW_SIZE \
395 (sizeof(void*) >= 8 \
396 ? 1 * 1024 * 1024 * 1024 \
397 : 32 * 1024 * 1024)
398
399#endif /* NO_MMAP */
400
401#ifndef MAP_FAILED
402#define MAP_FAILED ((void *)-1)
403#endif
404
405#ifdef NO_ST_BLOCKS_IN_STRUCT_STAT
406#define on_disk_bytes(st) ((st).st_size)
407#else
408#define on_disk_bytes(st) ((st).st_blocks * 512)
409#endif
410
411#define DEFAULT_PACKED_GIT_LIMIT \
412 ((1024L * 1024L) * (sizeof(void*) >= 8 ? 8192 : 256))
413
414#ifdef NO_PREAD
415#define pread git_pread
416extern ssize_t git_pread(int fd, void *buf, size_t count, off_t offset);
417#endif
418/*
419 * Forward decl that will remind us if its twin in cache.h changes.
420 * This function is used in compat/pread.c. But we can't include
421 * cache.h there.
422 */
423extern ssize_t read_in_full(int fd, void *buf, size_t count);
424
425#ifdef NO_SETENV
426#define setenv gitsetenv
427extern int gitsetenv(const char *, const char *, int);
428#endif
429
430#ifdef NO_MKDTEMP
431#define mkdtemp gitmkdtemp
432extern char *gitmkdtemp(char *);
433#endif
434
435#ifdef NO_MKSTEMPS
436#define mkstemps gitmkstemps
437extern int gitmkstemps(char *, int);
438#endif
439
440#ifdef NO_UNSETENV
441#define unsetenv gitunsetenv
442extern void gitunsetenv(const char *);
443#endif
444
445#ifdef NO_STRCASESTR
446#define strcasestr gitstrcasestr
447extern char *gitstrcasestr(const char *haystack, const char *needle);
448#endif
449
450#ifdef NO_STRLCPY
451#define strlcpy gitstrlcpy
452extern size_t gitstrlcpy(char *, const char *, size_t);
453#endif
454
455#ifdef NO_STRTOUMAX
456#define strtoumax gitstrtoumax
457extern uintmax_t gitstrtoumax(const char *, char **, int);
458#define strtoimax gitstrtoimax
459extern intmax_t gitstrtoimax(const char *, char **, int);
460#endif
461
462#ifdef NO_HSTRERROR
463#define hstrerror githstrerror
464extern const char *githstrerror(int herror);
465#endif
466
467#ifdef NO_MEMMEM
468#define memmem gitmemmem
469void *gitmemmem(const void *haystack, size_t haystacklen,
470 const void *needle, size_t needlelen);
471#endif
472
473#ifdef NO_GETPAGESIZE
474#define getpagesize() sysconf(_SC_PAGESIZE)
475#endif
476
477#ifdef FREAD_READS_DIRECTORIES
478#ifdef fopen
479#undef fopen
480#endif
481#define fopen(a,b) git_fopen(a,b)
482extern FILE *git_fopen(const char*, const char*);
483#endif
484
485#ifdef SNPRINTF_RETURNS_BOGUS
486#define snprintf git_snprintf
487extern int git_snprintf(char *str, size_t maxsize,
488 const char *format, ...);
489#define vsnprintf git_vsnprintf
490extern int git_vsnprintf(char *str, size_t maxsize,
491 const char *format, va_list ap);
492#endif
493
494#ifdef __GLIBC_PREREQ
495#if __GLIBC_PREREQ(2, 1)
496#define HAVE_STRCHRNUL
497#define HAVE_MEMPCPY
498#endif
499#endif
500
501#ifndef HAVE_STRCHRNUL
502#define strchrnul gitstrchrnul
503static inline char *gitstrchrnul(const char *s, int c)
504{
505 while (*s && *s != c)
506 s++;
507 return (char *)s;
508}
509#endif
510
511#ifndef HAVE_MEMPCPY
512#define mempcpy gitmempcpy
513static inline void *gitmempcpy(void *dest, const void *src, size_t n)
514{
515 return (char *)memcpy(dest, src, n) + n;
516}
517#endif
518
519#ifdef NO_INET_PTON
520int inet_pton(int af, const char *src, void *dst);
521#endif
522
523#ifdef NO_INET_NTOP
524const char *inet_ntop(int af, const void *src, char *dst, size_t size);
525#endif
526
527extern void release_pack_memory(size_t);
528
529typedef void (*try_to_free_t)(size_t);
530extern try_to_free_t set_try_to_free_routine(try_to_free_t);
531
532extern char *xstrdup(const char *str);
533extern void *xmalloc(size_t size);
534extern void *xmallocz(size_t size);
535extern void *xmemdupz(const void *data, size_t len);
536extern char *xstrndup(const char *str, size_t len);
537extern void *xrealloc(void *ptr, size_t size);
538extern void *xcalloc(size_t nmemb, size_t size);
539extern void *xmmap(void *start, size_t length, int prot, int flags, int fd, off_t offset);
540extern ssize_t xread(int fd, void *buf, size_t len);
541extern ssize_t xwrite(int fd, const void *buf, size_t len);
542extern int xdup(int fd);
543extern FILE *xfdopen(int fd, const char *mode);
544extern int xmkstemp(char *template);
545extern int xmkstemp_mode(char *template, int mode);
546extern int odb_mkstemp(char *template, size_t limit, const char *pattern);
547extern int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1);
548
549static inline size_t xsize_t(off_t len)
550{
551 if (len > (size_t) len)
552 die("Cannot handle files this big");
553 return (size_t)len;
554}
555
556static inline int has_extension(const char *filename, const char *ext)
557{
558 size_t len = strlen(filename);
559 size_t extlen = strlen(ext);
560 return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
561}
562
563/* in ctype.c, for kwset users */
564extern const char tolower_trans_tbl[256];
565
566/* Sane ctype - no locale, and works with signed chars */
567#undef isascii
568#undef isspace
569#undef isdigit
570#undef isalpha
571#undef isalnum
572#undef isprint
573#undef islower
574#undef isupper
575#undef tolower
576#undef toupper
577#undef iscntrl
578#undef ispunct
579#undef isxdigit
580
581extern const unsigned char sane_ctype[256];
582#define GIT_SPACE 0x01
583#define GIT_DIGIT 0x02
584#define GIT_ALPHA 0x04
585#define GIT_GLOB_SPECIAL 0x08
586#define GIT_REGEX_SPECIAL 0x10
587#define GIT_PATHSPEC_MAGIC 0x20
588#define GIT_CNTRL 0x40
589#define GIT_PUNCT 0x80
590#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
591#define isascii(x) (((x) & ~0x7f) == 0)
592#define isspace(x) sane_istest(x,GIT_SPACE)
593#define isdigit(x) sane_istest(x,GIT_DIGIT)
594#define isalpha(x) sane_istest(x,GIT_ALPHA)
595#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
596#define isprint(x) ((x) >= 0x20 && (x) <= 0x7e)
597#define islower(x) sane_iscase(x, 1)
598#define isupper(x) sane_iscase(x, 0)
599#define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL)
600#define is_regex_special(x) sane_istest(x,GIT_GLOB_SPECIAL | GIT_REGEX_SPECIAL)
601#define iscntrl(x) (sane_istest(x,GIT_CNTRL))
602#define ispunct(x) sane_istest(x, GIT_PUNCT | GIT_REGEX_SPECIAL | \
603 GIT_GLOB_SPECIAL | GIT_PATHSPEC_MAGIC)
604#define isxdigit(x) (hexval_table[x] != -1)
605#define tolower(x) sane_case((unsigned char)(x), 0x20)
606#define toupper(x) sane_case((unsigned char)(x), 0)
607#define is_pathspec_magic(x) sane_istest(x,GIT_PATHSPEC_MAGIC)
608
609static inline int sane_case(int x, int high)
610{
611 if (sane_istest(x, GIT_ALPHA))
612 x = (x & ~0x20) | high;
613 return x;
614}
615
616static inline int sane_iscase(int x, int is_lower)
617{
618 if (!sane_istest(x, GIT_ALPHA))
619 return 0;
620
621 if (is_lower)
622 return (x & 0x20) != 0;
623 else
624 return (x & 0x20) == 0;
625}
626
627static inline int strtoul_ui(char const *s, int base, unsigned int *result)
628{
629 unsigned long ul;
630 char *p;
631
632 errno = 0;
633 ul = strtoul(s, &p, base);
634 if (errno || *p || p == s || (unsigned int) ul != ul)
635 return -1;
636 *result = ul;
637 return 0;
638}
639
640static inline int strtol_i(char const *s, int base, int *result)
641{
642 long ul;
643 char *p;
644
645 errno = 0;
646 ul = strtol(s, &p, base);
647 if (errno || *p || p == s || (int) ul != ul)
648 return -1;
649 *result = ul;
650 return 0;
651}
652
653#ifdef INTERNAL_QSORT
654void git_qsort(void *base, size_t nmemb, size_t size,
655 int(*compar)(const void *, const void *));
656#define qsort git_qsort
657#endif
658
659#ifndef DIR_HAS_BSD_GROUP_SEMANTICS
660# define FORCE_DIR_SET_GID S_ISGID
661#else
662# define FORCE_DIR_SET_GID 0
663#endif
664
665#ifdef NO_NSEC
666#undef USE_NSEC
667#define ST_CTIME_NSEC(st) 0
668#define ST_MTIME_NSEC(st) 0
669#else
670#ifdef USE_ST_TIMESPEC
671#define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctimespec.tv_nsec))
672#define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtimespec.tv_nsec))
673#else
674#define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctim.tv_nsec))
675#define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtim.tv_nsec))
676#endif
677#endif
678
679#ifdef UNRELIABLE_FSTAT
680#define fstat_is_reliable() 0
681#else
682#define fstat_is_reliable() 1
683#endif
684
685#ifndef va_copy
686/*
687 * Since an obvious implementation of va_list would be to make it a
688 * pointer into the stack frame, a simple assignment will work on
689 * many systems. But let's try to be more portable.
690 */
691#ifdef __va_copy
692#define va_copy(dst, src) __va_copy(dst, src)
693#else
694#define va_copy(dst, src) ((dst) = (src))
695#endif
696#endif
697
698/*
699 * Preserves errno, prints a message, but gives no warning for ENOENT.
700 * Always returns the return value of unlink(2).
701 */
702int unlink_or_warn(const char *path);
703/*
704 * Likewise for rmdir(2).
705 */
706int rmdir_or_warn(const char *path);
707/*
708 * Calls the correct function out of {unlink,rmdir}_or_warn based on
709 * the supplied file mode.
710 */
711int remove_or_warn(unsigned int mode, const char *path);
712
713/*
714 * Call access(2), but warn for any error except "missing file"
715 * (ENOENT or ENOTDIR).
716 */
717#define ACCESS_EACCES_OK (1U << 0)
718int access_or_warn(const char *path, int mode, unsigned flag);
719int access_or_die(const char *path, int mode, unsigned flag);
720
721/* Warn on an inaccessible file that ought to be accessible */
722void warn_on_inaccessible(const char *path);
723
724/* Get the passwd entry for the UID of the current process. */
725struct passwd *xgetpwuid_self(void);
726
727#endif