diff options
Diffstat (limited to 'lib/relocatable.c')
| -rw-r--r-- | lib/relocatable.c | 70 |
1 files changed, 38 insertions, 32 deletions
diff --git a/lib/relocatable.c b/lib/relocatable.c index 1353ab5..1ca8ec0 100644 --- a/lib/relocatable.c +++ b/lib/relocatable.c @@ -1,27 +1,18 @@ /* Provide relocatable packages. - Copyright (C) 2003-2006, 2008-2018 Free Software Foundation, Inc. + Copyright (C) 2003-2006, 2008-2022 Free Software Foundation, Inc. Written by Bruno Haible <bruno@clisp.org>, 2003. - This program is free software: you can redistribute it and/or - modify it under the terms of either: + This file is free software: you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. - * the GNU Lesser General Public License as published by the Free - Software Foundation; either version 3 of the License, or (at your - option) any later version. - - or - - * the GNU General Public License as published by the Free - Software Foundation; either version 2 of the License, or (at your - option) any later version. - - or both in parallel, as here. - This program is distributed in the hope that it will be useful, + This file is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. + GNU Lesser General Public License for more details. - You should have received a copy of the GNU General Public License + You should have received a copy of the GNU Lesser General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. */ @@ -74,6 +65,12 @@ # include <libintl.h> #endif +#if defined _WIN32 && !defined __CYGWIN__ +/* Don't assume that UNICODE is not defined. */ +# undef GetModuleFileName +# define GetModuleFileName GetModuleFileNameA +#endif + /* Faked cheap 'bool'. */ #undef bool #undef false @@ -83,8 +80,8 @@ #define true 1 /* Pathname support. - ISSLASH(C) tests whether C is a directory separator character. - IS_PATH_WITH_DIR(P) tests whether P contains a directory specification. + ISSLASH(C) tests whether C is a directory separator character. + IS_FILE_NAME_WITH_DIR(P) tests whether P contains a directory specification. */ #if (defined _WIN32 && !defined __CYGWIN__) || defined __EMX__ || defined __DJGPP__ /* Native Windows, OS/2, DOS */ @@ -92,13 +89,13 @@ # define HAS_DEVICE(P) \ ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \ && (P)[1] == ':') -# define IS_PATH_WITH_DIR(P) \ +# define IS_FILE_NAME_WITH_DIR(P) \ (strchr (P, '/') != NULL || strchr (P, '\\') != NULL || HAS_DEVICE (P)) # define FILE_SYSTEM_PREFIX_LEN(P) (HAS_DEVICE (P) ? 2 : 0) #else /* Unix */ # define ISSLASH(C) ((C) == '/') -# define IS_PATH_WITH_DIR(P) (strchr (P, '/') != NULL) +# define IS_FILE_NAME_WITH_DIR(P) (strchr (P, '/') != NULL) # define FILE_SYSTEM_PREFIX_LEN(P) 0 #endif @@ -277,7 +274,7 @@ compute_curr_prefix (const char *orig_installprefix, } if (!same) break; - /* The last pathname component was the same. opi and cpi now point + /* The last pathname component was the same. rpi and cpi now point to the slash before it. */ rp = rpi; cp = cpi; @@ -291,23 +288,23 @@ compute_curr_prefix (const char *orig_installprefix, } { - size_t curr_prefix_len = cp - curr_installdir; - char *curr_prefix; + size_t computed_curr_prefix_len = cp - curr_installdir; + char *computed_curr_prefix; - curr_prefix = (char *) xmalloc (curr_prefix_len + 1); + computed_curr_prefix = (char *) xmalloc (computed_curr_prefix_len + 1); #ifdef NO_XMALLOC - if (curr_prefix == NULL) + if (computed_curr_prefix == NULL) { free (curr_installdir); return NULL; } #endif - memcpy (curr_prefix, curr_installdir, curr_prefix_len); - curr_prefix[curr_prefix_len] = '\0'; + memcpy (computed_curr_prefix, curr_installdir, computed_curr_prefix_len); + computed_curr_prefix[computed_curr_prefix_len] = '\0'; free (curr_installdir); - return curr_prefix; + return computed_curr_prefix; } } } @@ -326,7 +323,10 @@ static char *shared_library_fullname; supports longer file names (see <https://cygwin.com/ml/cygwin/2011-01/msg00410.html>). */ -/* Determine the full pathname of the shared library when it is loaded. */ +/* Determine the full pathname of the shared library when it is loaded. + + Documentation: + <https://docs.microsoft.com/en-us/windows/win32/dlls/dllmain> */ BOOL WINAPI DllMain (HINSTANCE module_handle, DWORD event, LPVOID reserved) @@ -342,11 +342,17 @@ DllMain (HINSTANCE module_handle, DWORD event, LPVOID reserved) /* Shouldn't happen. */ return FALSE; - if (!IS_PATH_WITH_DIR (location)) + if (!IS_FILE_NAME_WITH_DIR (location)) /* Shouldn't happen. */ return FALSE; - shared_library_fullname = strdup (location); + /* Avoid a memory leak when the same DLL get attached, detached, + attached, detached, and so on. This happens e.g. when a spell + checker DLL is used repeatedly by a mail program. */ + if (!(shared_library_fullname != NULL + && strcmp (shared_library_fullname, location) == 0)) + /* Remember the full pathname of the shared library. */ + shared_library_fullname = strdup (location); } return TRUE; |