diff --git a/compat/mingw.c b/compat/mingw.c index d5c301055f..18e737d985 100644 --- a/compat/mingw.c +++ b/compat/mingw.c @@ -270,6 +270,8 @@ int mingw_core_config(const char *var, const char *value, void *cb) return 0; } +DECLARE_PROC_ADDR(kernel32.dll, BOOLEAN, CreateSymbolicLinkW, LPCWSTR, LPCWSTR, DWORD); + /* Normalizes NT paths as returned by some low-level APIs. */ static wchar_t *normalize_ntpath(wchar_t *wbuf) { @@ -2172,6 +2174,34 @@ int link(const char *oldpath, const char *newpath) return 0; } +int symlink(const char *target, const char *link) +{ + wchar_t wtarget[MAX_LONG_PATH], wlink[MAX_LONG_PATH]; + int len; + + /* fail if symlinks are disabled or API is not supported (WinXP) */ + if (!has_symlinks || !INIT_PROC_ADDR(CreateSymbolicLinkW)) { + errno = ENOSYS; + return -1; + } + + if ((len = xutftowcs_long_path(wtarget, target)) < 0 + || xutftowcs_long_path(wlink, link) < 0) + return -1; + + /* convert target dir separators to backslashes */ + while (len--) + if (wtarget[len] == '/') + wtarget[len] = '\\'; + + /* create file symlink */ + if (!CreateSymbolicLinkW(wlink, wtarget, 0)) { + errno = err_win_to_posix(GetLastError()); + return -1; + } + return 0; +} + #ifndef _WINNT_H /* * The REPARSE_DATA_BUFFER structure is defined in the Windows DDK (in diff --git a/compat/mingw.h b/compat/mingw.h index 228121ab83..5c7fdc1b67 100644 --- a/compat/mingw.h +++ b/compat/mingw.h @@ -123,8 +123,6 @@ struct utsname { * trivial stubs */ -static inline int symlink(const char *oldpath, const char *newpath) -{ errno = ENOSYS; return -1; } static inline int fchmod(int fildes, mode_t mode) { errno = ENOSYS; return -1; } #ifndef __MINGW64_VERSION_MAJOR @@ -216,6 +214,7 @@ int setitimer(int type, struct itimerval *in, struct itimerval *out); int sigaction(int sig, struct sigaction *in, struct sigaction *out); int link(const char *oldpath, const char *newpath); int uname(struct utsname *buf); +int symlink(const char *target, const char *link); int readlink(const char *path, char *buf, size_t bufsiz); /*