ReactOS 0.4.16-dev-1521-gb8f1da6
Functions | Variables
environ.c File Reference
#include <precomp.h>
#include <internal/wine/msvcrt.h>
Include dependency graph for environ.c:

Go to the source code of this file.

Functions

int BlockEnvToEnvironA (void)
 
int BlockEnvToEnvironW (void)
 
char ** DuplicateEnvironment (char **original_environment, int wide)
 
void FreeEnvironment (char **environment)
 
int SetEnv (const wchar_t *option)
 
int * __p__commode (void)
 
void __set_app_type (int app_type)
 
char ** __p__acmdln (void)
 
wchar_t ** __p__wcmdln (void)
 
char *** __p__environ (void)
 
wchar_t *** __p__wenviron (void)
 
char *** __p___initenv (void)
 
wchar_t *** __p___winitenv (void)
 
errno_t _get_osplatform (unsigned int *pValue)
 
int * __p___mb_cur_max (void)
 
int CDECL ___mb_cur_max_func (void)
 
unsigned int * __p__osver (void)
 
char ** __p__pgmptr (void)
 
int _get_pgmptr (char **p)
 
wchar_t ** __p__wpgmptr (void)
 
int _get_wpgmptr (WCHAR **p)
 
unsigned int * __p__winmajor (void)
 
unsigned int * __p__winminor (void)
 
unsigned int * __p__winver (void)
 

Variables

unsigned int _osplatform = 0
 
unsigned int _osver = 0
 
unsigned int _winminor = 0
 
unsigned int _winmajor = 0
 
unsigned int _winver = 0
 
unsigned int __setlc_active = 0
 
unsigned int __unguarded_readlc_active = 0
 
char * _acmdln = NULL
 
wchar_t * _wcmdln = NULL
 
char ** _environ = NULL
 
wchar_t ** _wenviron = NULL
 
char ** __initenv = NULL
 
wchar_t ** __winitenv = NULL
 
char * _pgmptr = NULL
 
wchar_t * _wpgmptr = NULL
 
int __app_type = _UNKNOWN_APP
 
int _commode
 

Function Documentation

◆ ___mb_cur_max_func()

int CDECL ___mb_cur_max_func ( void  )

Definition at line 438 of file environ.c.

439{
440 return get_locinfo()->mb_cur_max;
441}
get_locinfo
#define get_locinfo()
Definition: winesup.h:25

◆ __p___initenv()

char *** __p___initenv ( void  )

Definition at line 400 of file environ.c.

401{
402 return &__initenv;
403}
__initenv
char ** __initenv
Definition: environ.c:24

Referenced by Test___initenv().

◆ __p___mb_cur_max()

int * __p___mb_cur_max ( void  )

Definition at line 430 of file environ.c.

431{
432 return &get_locinfo()->mb_cur_max;
433}

◆ __p___winitenv()

wchar_t *** __p___winitenv ( void  )

Definition at line 408 of file environ.c.

409{
410 return &__winitenv;
411}
__winitenv
wchar_t ** __winitenv
Definition: environ.c:25

Referenced by Test___winitenv().

◆ __p__acmdln()

char ** __p__acmdln ( void  )

Definition at line 368 of file environ.c.

369{
370 return &_acmdln;
371}
_acmdln
char * _acmdln
Definition: environ.c:18

◆ __p__commode()

int * __p__commode ( void  )

Definition at line 352 of file environ.c.

353{
354 return &_commode;
355}
_commode
int _commode
Definition: environ.c:31

Referenced by Test__commode().

◆ __p__environ()

char *** __p__environ ( void  )

Definition at line 384 of file environ.c.

385{
386 return &_environ;
387}
_environ
char ** _environ
Definition: environ.c:22

◆ __p__osver()

unsigned int * __p__osver ( void  )

Definition at line 446 of file environ.c.

447{
448 return &_osver;
449}
_osver
unsigned int _osver
Definition: environ.c:11

Referenced by Test__osver().

◆ __p__pgmptr()

char ** __p__pgmptr ( void  )

Definition at line 454 of file environ.c.

455{
456 return &_pgmptr;
457}
_pgmptr
char * _pgmptr
Definition: environ.c:27

◆ __p__wcmdln()

wchar_t ** __p__wcmdln ( void  )

Definition at line 376 of file environ.c.

377{
378 return &_wcmdln;
379}
_wcmdln
wchar_t * _wcmdln
Definition: environ.c:19

◆ __p__wenviron()

wchar_t *** __p__wenviron ( void  )

Definition at line 392 of file environ.c.

393{
394 return &_wenviron;
395}
_wenviron
wchar_t ** _wenviron
Definition: environ.c:23

◆ __p__winmajor()

unsigned int * __p__winmajor ( void  )

Definition at line 500 of file environ.c.

501{
502 return &_winmajor;
503}
_winmajor
unsigned int _winmajor
Definition: environ.c:13

Referenced by Test__winmajor().

◆ __p__winminor()

unsigned int * __p__winminor ( void  )

Definition at line 508 of file environ.c.

509{
510 return &_winminor;
511}
_winminor
unsigned int _winminor
Definition: environ.c:12

Referenced by Test__winminor().

◆ __p__winver()

unsigned int * __p__winver ( void  )

Definition at line 516 of file environ.c.

517{
518 return &_winver;
519}
_winver
unsigned int _winver
Definition: environ.c:14

Referenced by Test__winver().

◆ __p__wpgmptr()

wchar_t ** __p__wpgmptr ( void  )

Definition at line 477 of file environ.c.

478{
479 return &_wpgmptr;
480}
_wpgmptr
wchar_t * _wpgmptr
Definition: environ.c:29

◆ __set_app_type()

void __set_app_type ( int  app_type)

Definition at line 360 of file environ.c.

361{
362 __app_type = app_type;
363}
__app_type
int __app_type
Definition: environ.c:30

◆ _get_osplatform()

errno_t _get_osplatform ( unsigned int *  pValue)

Definition at line 416 of file environ.c.

417{
418 if (!MSVCRT_CHECK_PMT(pValue != NULL)) {
419 *_errno() = EINVAL;
420 return EINVAL;
421 }
422
423 *pValue = _osplatform;
424 return 0;
425}
EINVAL
#define EINVAL
Definition: acclib.h:90
NULL
#define NULL
Definition: types.h:112
pValue
PWCHAR pValue
Definition: fxregistryapi.cpp:1471
MSVCRT_CHECK_PMT
#define MSVCRT_CHECK_PMT(x)
Definition: mbstowcs_s.c:26
_errno
_CRTIMP int *__cdecl _errno(void)
Definition: errno.c:17
_osplatform
unsigned int _osplatform
Definition: environ.c:10

◆ _get_pgmptr()

int _get_pgmptr ( char **  p)

Definition at line 462 of file environ.c.

463{
464 if (!MSVCRT_CHECK_PMT(p))
465 {
466 *_errno() = EINVAL;
467 return EINVAL;
468 }
469
470 *p = _pgmptr;
471 return 0;
472}
p
GLfloat GLfloat p
Definition: glext.h:8902

◆ _get_wpgmptr()

int _get_wpgmptr ( WCHAR **  p)

Definition at line 485 of file environ.c.

486{
487 if (!MSVCRT_CHECK_PMT(p))
488 {
489 *_errno() = EINVAL;
490 return EINVAL;
491 }
492
493 *p = _wpgmptr;
494 return 0;
495}

◆ BlockEnvToEnvironA()

int BlockEnvToEnvironA ( void  )

Definition at line 34 of file environ.c.

35{
36 char *ptr, *environment_strings;
37 char **envptr;
38 int count = 1;
39 size_t len;
40
41 TRACE("BlockEnvToEnvironA()\n");
42
43 environment_strings = GetEnvironmentStringsA();
44 if (environment_strings == NULL) {
45 return -1;
46 }
47
48 for (ptr = environment_strings; *ptr; ptr += len)
49 {
50 len = strlen(ptr) + 1;
51 /* Skip drive letter settings. */
52 if (*ptr != '=')
53 count++;
54 }
55
56 __initenv = _environ = malloc(count * sizeof(char*));
57 if (_environ)
58 {
59 for (ptr = environment_strings, envptr = _environ; count > 1; ptr += len)
60 {
61 len = strlen(ptr) + 1;
62 /* Skip drive letter settings. */
63 if (*ptr != '=')
64 {
65 if ((*envptr = malloc(len)) == NULL)
66 {
67 for (envptr--; envptr >= _environ; envptr--)
68 free(*envptr);
69 FreeEnvironmentStringsA(environment_strings);
70 free(_environ);
71 __initenv = _environ = NULL;
72 return -1;
73 }
74 memcpy(*envptr++, ptr, len);
75 count--;
76 }
77 }
78 /* Add terminating NULL entry. */
79 *envptr = NULL;
80 }
81
82 FreeEnvironmentStringsA(environment_strings);
83 return _environ ? 0 : -1;
84}
strlen
ACPI_SIZE strlen(const char *String)
Definition: utclib.c:269
free
#define free
Definition: debug_ros.c:5
malloc
#define malloc
Definition: debug_ros.c:4
FreeEnvironmentStringsA
BOOL WINAPI FreeEnvironmentStringsA(IN LPSTR EnvironmentStrings)
Definition: environ.c:379
count
GLuint GLuint GLsizei count
Definition: gl.h:1545
len
GLenum GLsizei len
Definition: glext.h:6722
memcpy
#define memcpy(s1, s2, n)
Definition: mkisofs.h:878
ptr
static PVOID ptr
Definition: dispmode.c:27
TRACE
#define TRACE(s)
Definition: solgame.cpp:4
GetEnvironmentStringsA
#define GetEnvironmentStringsA
Definition: winbase.h:3854

Referenced by crt_process_init(), and DllMain().

◆ BlockEnvToEnvironW()

int BlockEnvToEnvironW ( void  )

Definition at line 86 of file environ.c.

87{
88 wchar_t *ptr, *environment_strings;
89 wchar_t **envptr;
90 int count = 1;
91 size_t len;
92
93 TRACE("BlockEnvToEnvironW()\n");
94
95 environment_strings = GetEnvironmentStringsW();
96 if (environment_strings == NULL) {
97 return -1;
98 }
99
100 for (ptr = environment_strings; *ptr; ptr += len)
101 {
102 len = wcslen(ptr) + 1;
103 /* Skip drive letter settings. */
104 if (*ptr != '=')
105 count++;
106 }
107
108 __winitenv = _wenviron = malloc(count * sizeof(wchar_t*));
109 if (_wenviron)
110 {
111 for (ptr = environment_strings, envptr = _wenviron; count > 1; ptr += len)
112 {
113 len = wcslen(ptr) + 1;
114 /* Skip drive letter settings. */
115 if (*ptr != '=')
116 {
117 if ((*envptr = malloc(len * sizeof(wchar_t))) == NULL)
118 {
119 for (envptr--; envptr >= _wenviron; envptr--)
120 free(*envptr);
121 FreeEnvironmentStringsW(environment_strings);
122 free(_wenviron);
123 __winitenv = _wenviron = NULL;
124 return -1;
125 }
126 memcpy(*envptr++, ptr, len * sizeof(wchar_t));
127 count--;
128 }
129 }
130 /* Add terminating NULL entry. */
131 *envptr = NULL;
132 }
133
134 FreeEnvironmentStringsW(environment_strings);
135 return _wenviron ? 0 : -1;
136}
FreeEnvironmentStringsW
BOOL WINAPI FreeEnvironmentStringsW(IN LPWSTR EnvironmentStrings)
Definition: environ.c:389
GetEnvironmentStringsW
LPWSTR WINAPI DECLSPEC_HOTPATCH GetEnvironmentStringsW(void)
Definition: process.c:1538
wcslen
_CRTIMP size_t __cdecl wcslen(_In_z_ const wchar_t *_Str)

Referenced by crt_process_init(), and DllMain().

◆ DuplicateEnvironment()

char ** DuplicateEnvironment ( char **  original_environment,
int  wide 
)

Internal function to duplicate environment block. Although it's parameter are defined as char**, it's able to work also with wide character environment block which are of type wchar_t**.

Parameters
original_environmentEnvironment to duplicate.
wideSet to zero for multibyte environments, non-zero otherwise.
Returns
Original environment in case of failure, otherwise pointer to new environment block.

Definition at line 151 of file environ.c.

152{
153 int count = 1;
154 char **envptr, **newenvptr, **newenv;
155
156 for (envptr = original_environment; *envptr != NULL; envptr++, count++)
157 ;
158
159 newenvptr = newenv = malloc(count * sizeof(char*));
160 if (newenv == NULL)
161 return original_environment;
162
163 for (envptr = original_environment; count > 1; newenvptr++, count--)
164 {
165 if (wide)
166 *newenvptr = (char*)_wcsdup((wchar_t*)*envptr++);
167 else
168 *newenvptr = _strdup(*envptr++);
169 if (*newenvptr == NULL)
170 {
171 for (newenvptr--; newenvptr >= newenv; newenvptr--)
172 free(*newenvptr);
173 free(newenv);
174 return original_environment;
175 }
176 }
177 *newenvptr = NULL;
178
179 return newenv;
180}
_strdup
#define _strdup
Definition: debug_ros.c:7
_wcsdup
_Check_return_ _CRTIMP wchar_t *__cdecl _wcsdup(_In_z_ const wchar_t *_Str)

Referenced by SetEnv().

◆ FreeEnvironment()

void FreeEnvironment ( char **  environment)

Internal function to deallocate environment block. Although it's parameter are defined as char**, it's able to work also with wide character environment block which are of type wchar_t**.

Parameters
environmentEnvironment to free.

Definition at line 190 of file environ.c.

191{
192 char **envptr;
193 for (envptr = environment; *envptr != NULL; envptr++)
194 free(*envptr);
195 free(environment);
196}

Referenced by crt_process_init(), DllMain(), and msvcrt_init_exception().

◆ SetEnv()

int SetEnv ( const wchar_t *  option)

Internal version of _wputenv and _putenv. It works duplicates the original envirnments created during initilization if needed to prevent having spurious pointers floating around. Then it updates the internal environment tables (_environ and _wenviron) and at last updates the OS environemnt.

Note that there can happen situation when the internal [_w]environ arrays will be updated, but the OS environment update will fail. In this case we don't undo the changes to the [_w]environ tables to comply with the Microsoft behaviour (and it's also much easier :-).

Definition at line 210 of file environ.c.

211{
212 wchar_t *epos, *name;
213 wchar_t **wenvptr;
214 wchar_t *woption;
215 char *mboption;
216 int remove, index, count, size, result = 0, found = 0;
217 wchar_t **wnewenv;
218 char **mbnewenv;
219
220 if (option == NULL || (epos = wcschr(option, L'=')) == NULL)
221 return -1;
222 remove = (epos[1] == 0);
223
224 /* Duplicate environment if needed. */
225 if (_environ == __initenv)
226 {
227 if ((_environ = DuplicateEnvironment(_environ, 0)) == __initenv)
228 return -1;
229 }
230 if (_wenviron == __winitenv)
231 {
232 if ((_wenviron = (wchar_t**)DuplicateEnvironment((char**)_wenviron, 1)) ==
233 __winitenv)
234 return -1;
235 }
236
237 /* Create a copy of the option name. */
238 name = malloc((epos - option + 1) * sizeof(wchar_t));
239 if (name == NULL)
240 return -1;
241 memcpy(name, option, (epos - option) * sizeof(wchar_t));
242 name[epos - option] = 0;
243
244 /* Find the option we're trying to modify. */
245 for (index = 0, wenvptr = _wenviron; *wenvptr != NULL; wenvptr++, index++)
246 {
247 if (!_wcsnicmp(*wenvptr, option, epos - option))
248 {
249 found = 1;
250 break;
251 }
252 }
253
254 if (remove)
255 {
256 if (!found)
257 {
258 free(name);
259 return 0;
260 }
261
262 /* Remove the option from wide character environment. */
263 free(*wenvptr);
264 for (count = index; *wenvptr != NULL; wenvptr++, count++)
265 *wenvptr = *(wenvptr + 1);
266 wnewenv = realloc(_wenviron, count * sizeof(wchar_t*));
267 if (wnewenv != NULL)
268 _wenviron = wnewenv;
269
270 /* Remove the option from multibyte environment. We assume
271 * the environments are in sync and the option is at the
272 * same position. */
273 free(_environ[index]);
274 memmove(&_environ[index], &_environ[index+1], (count - index) * sizeof(char*));
275 mbnewenv = realloc(_environ, count * sizeof(char*));
276 if (mbnewenv != NULL)
277 _environ = mbnewenv;
278
279 result = SetEnvironmentVariableW(name, NULL) ? 0 : -1;
280 }
281 else
282 {
283 /* Make a copy of the option that we will store in the environment block. */
284 woption = _wcsdup((wchar_t*)option);
285 if (woption == NULL)
286 {
287 free(name);
288 return -1;
289 }
290
291 /* Create a multibyte copy of the option. */
292 size = WideCharToMultiByte(CP_ACP, 0, option, -1, NULL, 0, NULL, NULL);
293 mboption = malloc(size);
294 if (mboption == NULL)
295 {
296 free(name);
297 free(woption);
298 return -1;
299 }
300 WideCharToMultiByte(CP_ACP, 0, option, -1, mboption, size, NULL, NULL);
301
302 if (found)
303 {
304 /* Replace the current entry. */
305 free(*wenvptr);
306 *wenvptr = woption;
307 free(_environ[index]);
308 _environ[index] = mboption;
309 }
310 else
311 {
312 /* Get the size of the original environment. */
313 for (count = index; *wenvptr != NULL; wenvptr++, count++)
314 ;
315
316 /* Create a new entry. */
317 if ((wnewenv = realloc(_wenviron, (count + 2) * sizeof(wchar_t*))) == NULL)
318 {
319 free(name);
320 free(mboption);
321 free(woption);
322 return -1;
323 }
324 _wenviron = wnewenv;
325 if ((mbnewenv = realloc(_environ, (count + 2) * sizeof(char*))) == NULL)
326 {
327 free(name);
328 free(mboption);
329 free(woption);
330 return -1;
331 }
332 _environ = mbnewenv;
333
334 /* Set the last entry to our option. */
335 _wenviron[count] = woption;
336 _environ[count] = mboption;
337 _wenviron[count + 1] = NULL;
338 _environ[count + 1] = NULL;
339 }
340
341 /* And finally update the OS environment. */
342 result = SetEnvironmentVariableW(name, epos + 1) ? 0 : -1;
343 }
344 free(name);
345
346 return result;
347}
index
#define index(s, c)
Definition: various.h:29
realloc
#define realloc
Definition: debug_ros.c:6
wcschr
#define wcschr
Definition: compat.h:17
CP_ACP
#define CP_ACP
Definition: compat.h:109
WideCharToMultiByte
#define WideCharToMultiByte
Definition: compat.h:111
SetEnvironmentVariableW
BOOL WINAPI DECLSPEC_HOTPATCH SetEnvironmentVariableW(IN LPCWSTR lpName, IN LPCWSTR lpValue)
Definition: environ.c:259
L
#define L(x)
Definition: resources.c:13
size
GLsizeiptr size
Definition: glext.h:5919
index
GLuint index
Definition: glext.h:6031
result
GLuint64EXT * result
Definition: glext.h:11304
memmove
#define memmove(s1, s2, n)
Definition: mkisofs.h:881
remove
int remove
Definition: msacm.c:1366
_wcsnicmp
_Check_return_ _CRTIMP int __cdecl _wcsnicmp(_In_reads_or_z_(_MaxCount) const wchar_t *_Str1, _In_reads_or_z_(_MaxCount) const wchar_t *_Str2, _In_ size_t _MaxCount)
DuplicateEnvironment
char ** DuplicateEnvironment(char **original_environment, int wide)
Definition: environ.c:151
name
Definition: name.c:39
option
Definition: getopt.h:109

Referenced by _putenv(), and _wputenv().

Variable Documentation

◆ __app_type

int __app_type = _UNKNOWN_APP

Definition at line 30 of file environ.c.

Referenced by __set_app_type(), _assert(), and abort().

◆ __initenv

char** __initenv = NULL

Definition at line 24 of file environ.c.

Referenced by __p___initenv(), BlockEnvToEnvironA(), DllMain(), msvcrt_init_exception(), SetEnv(), and Test___initenv().

◆ __setlc_active

unsigned int __setlc_active = 0

Definition at line 16 of file environ.c.

Referenced by ___setlc_active_func(), and Test___setlc_active().

◆ __unguarded_readlc_active

unsigned int __unguarded_readlc_active = 0

Definition at line 17 of file environ.c.

Referenced by ___unguarded_readlc_active_add_func(), and Test___unguarded_readlc_active().

◆ __winitenv

wchar_t** __winitenv = NULL

Definition at line 25 of file environ.c.

Referenced by __p___winitenv(), __wgetmainargs(), BlockEnvToEnvironW(), DllMain(), msvcrt_init_exception(), SetEnv(), and Test___winitenv().

◆ _acmdln

char* _acmdln = NULL

Definition at line 18 of file environ.c.

Referenced by __p__acmdln().

◆ _commode

int _commode

Definition at line 31 of file environ.c.

Referenced by __p__commode().

◆ _environ

char** _environ = NULL

Definition at line 22 of file environ.c.

Referenced by __getmainargs(), __p__environ(), BlockEnvToEnvironA(), crt_process_init(), DllMain(), msvcrt_init_exception(), and SetEnv().

◆ _osplatform

unsigned int _osplatform = 0

Definition at line 10 of file environ.c.

Referenced by _get_osplatform(), crt_process_init(), DllMain(), and Test__osplatform().

◆ _osver

unsigned int _osver = 0

Definition at line 11 of file environ.c.

Referenced by __p__osver(), crt_process_init(), DllMain(), and Test__osver().

◆ _pgmptr

char* _pgmptr = NULL

Definition at line 27 of file environ.c.

Referenced by __p__pgmptr(), and _get_pgmptr().

◆ _wcmdln

wchar_t* _wcmdln = NULL

Definition at line 19 of file environ.c.

Referenced by __p__wcmdln().

◆ _wenviron

wchar_t** _wenviron = NULL

Definition at line 23 of file environ.c.

Referenced by __p__wenviron(), BlockEnvToEnvironW(), DllMain(), msvcrt_init_exception(), and SetEnv().

◆ _winmajor

unsigned int _winmajor = 0

Definition at line 13 of file environ.c.

Referenced by __p__winmajor(), crt_process_init(), DllMain(), and Test__winmajor().

◆ _winminor

unsigned int _winminor = 0

Definition at line 12 of file environ.c.

Referenced by __p__winminor(), crt_process_init(), DllMain(), and Test__winminor().

◆ _winver

unsigned int _winver = 0

Definition at line 14 of file environ.c.

Referenced by __p__winver(), crt_process_init(), DllMain(), test__wcstoi64(), Test__winver(), test_demangle(), and test_xcvt().

◆ _wpgmptr

wchar_t* _wpgmptr = NULL

Definition at line 29 of file environ.c.

Referenced by __p__wpgmptr(), and _get_wpgmptr().