216 lines
7.2 KiB
C
216 lines
7.2 KiB
C
#include "mingw-posix.h"
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struct config_context;
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int mingw_core_config(const char *var, const char *value,
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const struct config_context *ctx, void *cb);
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#define platform_core_config mingw_core_config
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#ifndef NO_OPENSSL
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#include <openssl/ssl.h>
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static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
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{
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return SSL_set_fd(ssl, _get_osfhandle(fd));
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}
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#define SSL_set_fd mingw_SSL_set_fd
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static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
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{
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return SSL_set_rfd(ssl, _get_osfhandle(fd));
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}
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#define SSL_set_rfd mingw_SSL_set_rfd
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static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
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{
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return SSL_set_wfd(ssl, _get_osfhandle(fd));
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}
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#define SSL_set_wfd mingw_SSL_set_wfd
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#endif
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/*
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* git specific compatibility
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*/
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static inline void convert_slashes(char *path)
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{
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for (; *path; path++)
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if (*path == '\\')
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*path = '/';
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}
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#define PATH_SEP ';'
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char *mingw_query_user_email(void);
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#define query_user_email mingw_query_user_email
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/**
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* Verifies that the specified path is owned by the user running the
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* current process.
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*/
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int is_path_owned_by_current_sid(const char *path, struct strbuf *report);
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#define is_path_owned_by_current_user is_path_owned_by_current_sid
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/**
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* Verifies that the given path is a valid one on Windows.
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*
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* In particular, path segments are disallowed which
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*
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* - end in a period or a space (except the special directories `.` and `..`).
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*
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* - contain any of the reserved characters, e.g. `:`, `;`, `*`, etc
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*
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* - correspond to reserved names (such as `AUX`, `PRN`, etc)
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*
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* The `allow_literal_nul` parameter controls whether the path `NUL` should
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* be considered valid (this makes sense e.g. before opening files, as it is
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* perfectly legitimate to open `NUL` on Windows, just as it is to open
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* `/dev/null` on Unix/Linux).
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*
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* Returns 1 upon success, otherwise 0.
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*/
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int is_valid_win32_path(const char *path, int allow_literal_nul);
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#define is_valid_path(path) is_valid_win32_path(path, 0)
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/**
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* Converts UTF-8 encoded string to UTF-16LE.
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*
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* To support repositories with legacy-encoded file names, invalid UTF-8 bytes
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* 0xa0 - 0xff are converted to corresponding printable Unicode chars \u00a0 -
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* \u00ff, and invalid UTF-8 bytes 0x80 - 0x9f (which would make non-printable
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* Unicode) are converted to hex-code.
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*
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* Lead-bytes not followed by an appropriate number of trail-bytes, over-long
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* encodings and 4-byte encodings > \u10ffff are detected as invalid UTF-8.
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*
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* Maximum space requirement for the target buffer is two wide chars per UTF-8
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* char (((strlen(utf) * 2) + 1) [* sizeof(wchar_t)]).
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*
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* The maximum space is needed only if the entire input string consists of
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* invalid UTF-8 bytes in range 0x80-0x9f, as per the following table:
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*
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* | | UTF-8 | UTF-16 |
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* Code point | UTF-8 sequence | bytes | words | ratio
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* --------------+-------------------+-------+--------+-------
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* 000000-00007f | 0-7f | 1 | 1 | 1
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* 000080-0007ff | c2-df + 80-bf | 2 | 1 | 0.5
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* 000800-00ffff | e0-ef + 2 * 80-bf | 3 | 1 | 0.33
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* 010000-10ffff | f0-f4 + 3 * 80-bf | 4 | 2 (a) | 0.5
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* invalid | 80-9f | 1 | 2 (b) | 2
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* invalid | a0-ff | 1 | 1 | 1
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*
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* (a) encoded as UTF-16 surrogate pair
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* (b) encoded as two hex digits
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*
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* Note that, while the UTF-8 encoding scheme can be extended to 5-byte, 6-byte
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* or even indefinite-byte sequences, the largest valid code point \u10ffff
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* encodes as only 4 UTF-8 bytes.
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*
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* Parameters:
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* wcs: wide char target buffer
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* utf: string to convert
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* wcslen: size of target buffer (in wchar_t's)
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* utflen: size of string to convert, or -1 if 0-terminated
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*
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* Returns:
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* length of converted string (_wcslen(wcs)), or -1 on failure
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*
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* Errors:
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* EINVAL: one of the input parameters is invalid (e.g. NULL)
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* ERANGE: the output buffer is too small
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*/
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int xutftowcsn(wchar_t *wcs, const char *utf, size_t wcslen, int utflen);
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/**
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* Simplified variant of xutftowcsn, assumes input string is \0-terminated.
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*/
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static inline int xutftowcs(wchar_t *wcs, const char *utf, size_t wcslen)
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{
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return xutftowcsn(wcs, utf, wcslen, -1);
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}
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/**
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* Simplified file system specific variant of xutftowcsn, assumes output
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* buffer size is MAX_PATH wide chars and input string is \0-terminated,
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* fails with ENAMETOOLONG if input string is too long.
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*/
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static inline int xutftowcs_path(wchar_t *wcs, const char *utf)
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{
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int result = xutftowcsn(wcs, utf, MAX_PATH, -1);
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if (result < 0 && errno == ERANGE)
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errno = ENAMETOOLONG;
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return result;
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}
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/**
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* Converts UTF-16LE encoded string to UTF-8.
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*
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* Maximum space requirement for the target buffer is three UTF-8 chars per
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* wide char ((_wcslen(wcs) * 3) + 1).
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*
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* The maximum space is needed only if the entire input string consists of
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* UTF-16 words in range 0x0800-0xd7ff or 0xe000-0xffff (i.e. \u0800-\uffff
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* modulo surrogate pairs), as per the following table:
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*
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* | | UTF-16 | UTF-8 |
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* Code point | UTF-16 sequence | words | bytes | ratio
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* --------------+-----------------------+--------+-------+-------
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* 000000-00007f | 0000-007f | 1 | 1 | 1
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* 000080-0007ff | 0080-07ff | 1 | 2 | 2
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* 000800-00ffff | 0800-d7ff / e000-ffff | 1 | 3 | 3
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* 010000-10ffff | d800-dbff + dc00-dfff | 2 | 4 | 2
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*
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* Note that invalid code points > 10ffff cannot be represented in UTF-16.
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*
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* Parameters:
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* utf: target buffer
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* wcs: wide string to convert
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* utflen: size of target buffer
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*
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* Returns:
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* length of converted string, or -1 on failure
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*
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* Errors:
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* EINVAL: one of the input parameters is invalid (e.g. NULL)
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* ERANGE: the output buffer is too small
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*/
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int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen);
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/*
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* A critical section used in the implementation of the spawn
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* functions (mingw_spawnv[p]e()) and waitpid(). Initialised in
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* the replacement main() macro below.
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*/
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extern CRITICAL_SECTION pinfo_cs;
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/*
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* Git, like most portable C applications, implements a main() function. On
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* Windows, this main() function would receive parameters encoded in the
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* current locale, but Git for Windows would prefer UTF-8 encoded parameters.
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*
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* To make that happen, we still declare main() here, and then declare and
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* implement wmain() (which is the Unicode variant of main()) and compile with
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* -municode. This wmain() function reencodes the parameters from UTF-16 to
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* UTF-8 format, sets up a couple of other things as required on Windows, and
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* then hands off to the main() function.
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*/
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int wmain(int argc, const wchar_t **w_argv);
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int main(int argc, const char **argv);
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/*
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* For debugging: if a problem occurs, say, in a Git process that is spawned
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* from another Git process which in turn is spawned from yet another Git
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* process, it can be quite daunting to figure out what is going on.
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*
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* Call this function to open a new MinTTY (this assumes you are in Git for
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* Windows' SDK) with a GDB that attaches to the current process right away.
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*/
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void open_in_gdb(void);
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/*
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* Used by Pthread API implementation for Windows
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*/
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int err_win_to_posix(DWORD winerr);
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#ifndef NO_UNIX_SOCKETS
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int mingw_have_unix_sockets(void);
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#undef have_unix_sockets
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#define have_unix_sockets mingw_have_unix_sockets
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#endif
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