d7e8c87421
We no longer use any of MSVCRT's stat-functions, so there's no need to stick to a CRT-compatible 'struct stat' either. Define and use our own POSIX-2013-compatible 'struct stat' with nanosecond- precision file times. Note: This can cause performance issues when using Git variants with different file time resolutions, as the timestamps are stored in the Git index: after updating the index with a Git variant that uses second-precision file times, a nanosecond-aware Git will think that pretty much every single file listed in the index is out of date. Signed-off-by: Karsten Blees <blees@dcon.de> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2373 lines
61 KiB
C
2373 lines
61 KiB
C
#include "../git-compat-util.h"
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#include "win32.h"
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#include <conio.h>
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#include <wchar.h>
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#include "../strbuf.h"
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#include "../run-command.h"
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#include "../cache.h"
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#define HCAST(type, handle) ((type)(intptr_t)handle)
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static const int delay[] = { 0, 1, 10, 20, 40 };
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int err_win_to_posix(DWORD winerr)
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{
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int error = ENOSYS;
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switch(winerr) {
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case ERROR_ACCESS_DENIED: error = EACCES; break;
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case ERROR_ACCOUNT_DISABLED: error = EACCES; break;
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case ERROR_ACCOUNT_RESTRICTION: error = EACCES; break;
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case ERROR_ALREADY_ASSIGNED: error = EBUSY; break;
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case ERROR_ALREADY_EXISTS: error = EEXIST; break;
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case ERROR_ARITHMETIC_OVERFLOW: error = ERANGE; break;
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case ERROR_BAD_COMMAND: error = EIO; break;
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case ERROR_BAD_DEVICE: error = ENODEV; break;
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case ERROR_BAD_DRIVER_LEVEL: error = ENXIO; break;
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case ERROR_BAD_EXE_FORMAT: error = ENOEXEC; break;
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case ERROR_BAD_FORMAT: error = ENOEXEC; break;
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case ERROR_BAD_LENGTH: error = EINVAL; break;
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case ERROR_BAD_PATHNAME: error = ENOENT; break;
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case ERROR_BAD_PIPE: error = EPIPE; break;
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case ERROR_BAD_UNIT: error = ENODEV; break;
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case ERROR_BAD_USERNAME: error = EINVAL; break;
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case ERROR_BROKEN_PIPE: error = EPIPE; break;
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case ERROR_BUFFER_OVERFLOW: error = ENAMETOOLONG; break;
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case ERROR_BUSY: error = EBUSY; break;
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case ERROR_BUSY_DRIVE: error = EBUSY; break;
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case ERROR_CALL_NOT_IMPLEMENTED: error = ENOSYS; break;
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case ERROR_CANNOT_MAKE: error = EACCES; break;
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case ERROR_CANTOPEN: error = EIO; break;
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case ERROR_CANTREAD: error = EIO; break;
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case ERROR_CANTWRITE: error = EIO; break;
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case ERROR_CRC: error = EIO; break;
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case ERROR_CURRENT_DIRECTORY: error = EACCES; break;
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case ERROR_DEVICE_IN_USE: error = EBUSY; break;
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case ERROR_DEV_NOT_EXIST: error = ENODEV; break;
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case ERROR_DIRECTORY: error = EINVAL; break;
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case ERROR_DIR_NOT_EMPTY: error = ENOTEMPTY; break;
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case ERROR_DISK_CHANGE: error = EIO; break;
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case ERROR_DISK_FULL: error = ENOSPC; break;
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case ERROR_DRIVE_LOCKED: error = EBUSY; break;
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case ERROR_ENVVAR_NOT_FOUND: error = EINVAL; break;
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case ERROR_EXE_MARKED_INVALID: error = ENOEXEC; break;
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case ERROR_FILENAME_EXCED_RANGE: error = ENAMETOOLONG; break;
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case ERROR_FILE_EXISTS: error = EEXIST; break;
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case ERROR_FILE_INVALID: error = ENODEV; break;
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case ERROR_FILE_NOT_FOUND: error = ENOENT; break;
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case ERROR_GEN_FAILURE: error = EIO; break;
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case ERROR_HANDLE_DISK_FULL: error = ENOSPC; break;
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case ERROR_INSUFFICIENT_BUFFER: error = ENOMEM; break;
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case ERROR_INVALID_ACCESS: error = EACCES; break;
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case ERROR_INVALID_ADDRESS: error = EFAULT; break;
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case ERROR_INVALID_BLOCK: error = EFAULT; break;
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case ERROR_INVALID_DATA: error = EINVAL; break;
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case ERROR_INVALID_DRIVE: error = ENODEV; break;
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case ERROR_INVALID_EXE_SIGNATURE: error = ENOEXEC; break;
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case ERROR_INVALID_FLAGS: error = EINVAL; break;
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case ERROR_INVALID_FUNCTION: error = ENOSYS; break;
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case ERROR_INVALID_HANDLE: error = EBADF; break;
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case ERROR_INVALID_LOGON_HOURS: error = EACCES; break;
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case ERROR_INVALID_NAME: error = EINVAL; break;
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case ERROR_INVALID_OWNER: error = EINVAL; break;
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case ERROR_INVALID_PARAMETER: error = EINVAL; break;
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case ERROR_INVALID_PASSWORD: error = EPERM; break;
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case ERROR_INVALID_PRIMARY_GROUP: error = EINVAL; break;
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case ERROR_INVALID_SIGNAL_NUMBER: error = EINVAL; break;
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case ERROR_INVALID_TARGET_HANDLE: error = EIO; break;
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case ERROR_INVALID_WORKSTATION: error = EACCES; break;
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case ERROR_IO_DEVICE: error = EIO; break;
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case ERROR_IO_INCOMPLETE: error = EINTR; break;
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case ERROR_LOCKED: error = EBUSY; break;
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case ERROR_LOCK_VIOLATION: error = EACCES; break;
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case ERROR_LOGON_FAILURE: error = EACCES; break;
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case ERROR_MAPPED_ALIGNMENT: error = EINVAL; break;
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case ERROR_META_EXPANSION_TOO_LONG: error = E2BIG; break;
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case ERROR_MORE_DATA: error = EPIPE; break;
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case ERROR_NEGATIVE_SEEK: error = ESPIPE; break;
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case ERROR_NOACCESS: error = EFAULT; break;
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case ERROR_NONE_MAPPED: error = EINVAL; break;
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case ERROR_NOT_ENOUGH_MEMORY: error = ENOMEM; break;
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case ERROR_NOT_READY: error = EAGAIN; break;
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case ERROR_NOT_SAME_DEVICE: error = EXDEV; break;
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case ERROR_NO_DATA: error = EPIPE; break;
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case ERROR_NO_MORE_SEARCH_HANDLES: error = EIO; break;
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case ERROR_NO_PROC_SLOTS: error = EAGAIN; break;
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case ERROR_NO_SUCH_PRIVILEGE: error = EACCES; break;
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case ERROR_OPEN_FAILED: error = EIO; break;
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case ERROR_OPEN_FILES: error = EBUSY; break;
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case ERROR_OPERATION_ABORTED: error = EINTR; break;
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case ERROR_OUTOFMEMORY: error = ENOMEM; break;
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case ERROR_PASSWORD_EXPIRED: error = EACCES; break;
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case ERROR_PATH_BUSY: error = EBUSY; break;
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case ERROR_PATH_NOT_FOUND: error = ENOENT; break;
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case ERROR_PIPE_BUSY: error = EBUSY; break;
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case ERROR_PIPE_CONNECTED: error = EPIPE; break;
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case ERROR_PIPE_LISTENING: error = EPIPE; break;
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case ERROR_PIPE_NOT_CONNECTED: error = EPIPE; break;
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case ERROR_PRIVILEGE_NOT_HELD: error = EACCES; break;
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case ERROR_READ_FAULT: error = EIO; break;
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case ERROR_SEEK: error = EIO; break;
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case ERROR_SEEK_ON_DEVICE: error = ESPIPE; break;
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case ERROR_SHARING_BUFFER_EXCEEDED: error = ENFILE; break;
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case ERROR_SHARING_VIOLATION: error = EACCES; break;
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case ERROR_STACK_OVERFLOW: error = ENOMEM; break;
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case ERROR_SWAPERROR: error = ENOENT; break;
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case ERROR_TOO_MANY_MODULES: error = EMFILE; break;
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case ERROR_TOO_MANY_OPEN_FILES: error = EMFILE; break;
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case ERROR_UNRECOGNIZED_MEDIA: error = ENXIO; break;
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case ERROR_UNRECOGNIZED_VOLUME: error = ENODEV; break;
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case ERROR_WAIT_NO_CHILDREN: error = ECHILD; break;
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case ERROR_WRITE_FAULT: error = EIO; break;
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case ERROR_WRITE_PROTECT: error = EROFS; break;
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}
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return error;
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}
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static inline int is_file_in_use_error(DWORD errcode)
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{
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switch (errcode) {
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case ERROR_SHARING_VIOLATION:
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case ERROR_ACCESS_DENIED:
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return 1;
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}
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return 0;
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}
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static int read_yes_no_answer(void)
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{
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char answer[1024];
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if (fgets(answer, sizeof(answer), stdin)) {
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size_t answer_len = strlen(answer);
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int got_full_line = 0, c;
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/* remove the newline */
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if (answer_len >= 2 && answer[answer_len-2] == '\r') {
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answer[answer_len-2] = '\0';
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got_full_line = 1;
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} else if (answer_len >= 1 && answer[answer_len-1] == '\n') {
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answer[answer_len-1] = '\0';
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got_full_line = 1;
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}
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/* flush the buffer in case we did not get the full line */
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if (!got_full_line)
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while ((c = getchar()) != EOF && c != '\n')
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;
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} else
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/* we could not read, return the
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* default answer which is no */
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return 0;
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if (tolower(answer[0]) == 'y' && !answer[1])
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return 1;
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if (!strncasecmp(answer, "yes", sizeof(answer)))
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return 1;
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if (tolower(answer[0]) == 'n' && !answer[1])
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return 0;
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if (!strncasecmp(answer, "no", sizeof(answer)))
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return 0;
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/* did not find an answer we understand */
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return -1;
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}
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static int ask_yes_no_if_possible(const char *format, ...)
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{
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char question[4096];
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const char *retry_hook[] = { NULL, NULL, NULL };
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va_list args;
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va_start(args, format);
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vsnprintf(question, sizeof(question), format, args);
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va_end(args);
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if ((retry_hook[0] = mingw_getenv("GIT_ASK_YESNO"))) {
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retry_hook[1] = question;
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return !run_command_v_opt(retry_hook, 0);
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}
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if (!isatty(_fileno(stdin)) || !isatty(_fileno(stderr)))
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return 0;
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while (1) {
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int answer;
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fprintf(stderr, "%s (y/n) ", question);
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if ((answer = read_yes_no_answer()) >= 0)
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return answer;
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fprintf(stderr, "Sorry, I did not understand your answer. "
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"Please type 'y' or 'n'\n");
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}
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}
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int mingw_unlink(const char *pathname)
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{
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int ret, tries = 0;
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wchar_t wpathname[MAX_PATH];
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if (xutftowcs_path(wpathname, pathname) < 0)
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return -1;
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/* read-only files cannot be removed */
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_wchmod(wpathname, 0666);
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while ((ret = _wunlink(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) {
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if (!is_file_in_use_error(GetLastError()))
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break;
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/*
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* We assume that some other process had the source or
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* destination file open at the wrong moment and retry.
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* In order to give the other process a higher chance to
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* complete its operation, we give up our time slice now.
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* If we have to retry again, we do sleep a bit.
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*/
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Sleep(delay[tries]);
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tries++;
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}
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while (ret == -1 && is_file_in_use_error(GetLastError()) &&
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ask_yes_no_if_possible("Unlink of file '%s' failed. "
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"Should I try again?", pathname))
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ret = _wunlink(wpathname);
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return ret;
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}
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static int is_dir_empty(const wchar_t *wpath)
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{
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WIN32_FIND_DATAW findbuf;
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HANDLE handle;
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wchar_t wbuf[MAX_PATH + 2];
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wcscpy(wbuf, wpath);
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wcscat(wbuf, L"\\*");
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handle = FindFirstFileW(wbuf, &findbuf);
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if (handle == INVALID_HANDLE_VALUE)
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return GetLastError() == ERROR_NO_MORE_FILES;
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while (!wcscmp(findbuf.cFileName, L".") ||
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!wcscmp(findbuf.cFileName, L".."))
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if (!FindNextFileW(handle, &findbuf)) {
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DWORD err = GetLastError();
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FindClose(handle);
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return err == ERROR_NO_MORE_FILES;
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}
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FindClose(handle);
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return 0;
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}
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int mingw_rmdir(const char *pathname)
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{
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int ret, tries = 0;
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wchar_t wpathname[MAX_PATH];
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if (xutftowcs_path(wpathname, pathname) < 0)
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return -1;
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while ((ret = _wrmdir(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) {
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if (!is_file_in_use_error(GetLastError()))
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errno = err_win_to_posix(GetLastError());
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if (errno != EACCES)
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break;
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if (!is_dir_empty(wpathname)) {
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errno = ENOTEMPTY;
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break;
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}
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/*
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* We assume that some other process had the source or
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* destination file open at the wrong moment and retry.
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* In order to give the other process a higher chance to
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* complete its operation, we give up our time slice now.
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* If we have to retry again, we do sleep a bit.
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*/
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Sleep(delay[tries]);
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tries++;
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}
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while (ret == -1 && errno == EACCES && is_file_in_use_error(GetLastError()) &&
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ask_yes_no_if_possible("Deletion of directory '%s' failed. "
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"Should I try again?", pathname))
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ret = _wrmdir(wpathname);
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return ret;
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}
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static inline int needs_hiding(const char *path)
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{
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const char *basename;
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if (hide_dotfiles == HIDE_DOTFILES_FALSE)
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return 0;
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/* We cannot use basename(), as it would remove trailing slashes */
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mingw_skip_dos_drive_prefix((char **)&path);
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if (!*path)
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return 0;
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for (basename = path; *path; path++)
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if (is_dir_sep(*path)) {
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do {
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path++;
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} while (is_dir_sep(*path));
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/* ignore trailing slashes */
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if (*path)
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basename = path;
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}
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if (hide_dotfiles == HIDE_DOTFILES_TRUE)
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return *basename == '.';
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assert(hide_dotfiles == HIDE_DOTFILES_DOTGITONLY);
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return !strncasecmp(".git", basename, 4) &&
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(!basename[4] || is_dir_sep(basename[4]));
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}
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static int set_hidden_flag(const wchar_t *path, int set)
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{
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DWORD original = GetFileAttributesW(path), modified;
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if (set)
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modified = original | FILE_ATTRIBUTE_HIDDEN;
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else
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modified = original & ~FILE_ATTRIBUTE_HIDDEN;
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if (original == modified || SetFileAttributesW(path, modified))
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return 0;
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errno = err_win_to_posix(GetLastError());
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return -1;
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}
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int mingw_mkdir(const char *path, int mode)
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{
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int ret;
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wchar_t wpath[MAX_PATH];
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if (xutftowcs_path(wpath, path) < 0)
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return -1;
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ret = _wmkdir(wpath);
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if (!ret && needs_hiding(path))
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return set_hidden_flag(wpath, 1);
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return ret;
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}
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/*
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* Calling CreateFile() using FILE_APPEND_DATA and without FILE_WRITE_DATA
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* is documented in [1] as opening a writable file handle in append mode.
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* (It is believed that) this is atomic since it is maintained by the
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* kernel unlike the O_APPEND flag which is racily maintained by the CRT.
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*
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* [1] https://docs.microsoft.com/en-us/windows/desktop/fileio/file-access-rights-constants
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*
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* This trick does not appear to work for named pipes. Instead it creates
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* a named pipe client handle that cannot be written to. Callers should
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* just use the regular _wopen() for them. (And since client handle gets
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* bound to a unique server handle, it isn't really an issue.)
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*/
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static int mingw_open_append(wchar_t const *wfilename, int oflags, ...)
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{
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HANDLE handle;
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int fd;
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DWORD create = (oflags & O_CREAT) ? OPEN_ALWAYS : OPEN_EXISTING;
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/* only these flags are supported */
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if ((oflags & ~O_CREAT) != (O_WRONLY | O_APPEND))
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return errno = ENOSYS, -1;
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/*
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* FILE_SHARE_WRITE is required to permit child processes
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* to append to the file.
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*/
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handle = CreateFileW(wfilename, FILE_APPEND_DATA,
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FILE_SHARE_WRITE | FILE_SHARE_READ,
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NULL, create, FILE_ATTRIBUTE_NORMAL, NULL);
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if (handle == INVALID_HANDLE_VALUE)
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return errno = err_win_to_posix(GetLastError()), -1;
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/*
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* No O_APPEND here, because the CRT uses it only to reset the
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* file pointer to EOF before each write(); but that is not
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* necessary (and may lead to races) for a file created with
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* FILE_APPEND_DATA.
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*/
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fd = _open_osfhandle((intptr_t)handle, O_BINARY);
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if (fd < 0)
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CloseHandle(handle);
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return fd;
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}
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|
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/*
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* Does the pathname map to the local named pipe filesystem?
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* That is, does it have a "//./pipe/" prefix?
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*/
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static int is_local_named_pipe_path(const char *filename)
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{
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return (is_dir_sep(filename[0]) &&
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is_dir_sep(filename[1]) &&
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filename[2] == '.' &&
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is_dir_sep(filename[3]) &&
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!strncasecmp(filename+4, "pipe", 4) &&
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is_dir_sep(filename[8]) &&
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filename[9]);
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}
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int mingw_open (const char *filename, int oflags, ...)
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{
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typedef int (*open_fn_t)(wchar_t const *wfilename, int oflags, ...);
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va_list args;
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unsigned mode;
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int fd;
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wchar_t wfilename[MAX_PATH];
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open_fn_t open_fn;
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va_start(args, oflags);
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mode = va_arg(args, int);
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va_end(args);
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if (filename && !strcmp(filename, "/dev/null"))
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filename = "nul";
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if ((oflags & O_APPEND) && !is_local_named_pipe_path(filename))
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open_fn = mingw_open_append;
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else
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open_fn = _wopen;
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if (xutftowcs_path(wfilename, filename) < 0)
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return -1;
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fd = open_fn(wfilename, oflags, mode);
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if (fd < 0 && (oflags & O_ACCMODE) != O_RDONLY && errno == EACCES) {
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DWORD attrs = GetFileAttributesW(wfilename);
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if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY))
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errno = EISDIR;
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}
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if ((oflags & O_CREAT) && needs_hiding(filename)) {
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/*
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* Internally, _wopen() uses the CreateFile() API which errors
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* out with an ERROR_ACCESS_DENIED if CREATE_ALWAYS was
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* specified and an already existing file's attributes do not
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* match *exactly*. As there is no mode or flag we can set that
|
|
* would correspond to FILE_ATTRIBUTE_HIDDEN, let's just try
|
|
* again *without* the O_CREAT flag (that corresponds to the
|
|
* CREATE_ALWAYS flag of CreateFile()).
|
|
*/
|
|
if (fd < 0 && errno == EACCES)
|
|
fd = open_fn(wfilename, oflags & ~O_CREAT, mode);
|
|
if (fd >= 0 && set_hidden_flag(wfilename, 1))
|
|
warning("could not mark '%s' as hidden.", filename);
|
|
}
|
|
return fd;
|
|
}
|
|
|
|
static BOOL WINAPI ctrl_ignore(DWORD type)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
#undef fgetc
|
|
int mingw_fgetc(FILE *stream)
|
|
{
|
|
int ch;
|
|
if (!isatty(_fileno(stream)))
|
|
return fgetc(stream);
|
|
|
|
SetConsoleCtrlHandler(ctrl_ignore, TRUE);
|
|
while (1) {
|
|
ch = fgetc(stream);
|
|
if (ch != EOF || GetLastError() != ERROR_OPERATION_ABORTED)
|
|
break;
|
|
|
|
/* Ctrl+C was pressed, simulate SIGINT and retry */
|
|
mingw_raise(SIGINT);
|
|
}
|
|
SetConsoleCtrlHandler(ctrl_ignore, FALSE);
|
|
return ch;
|
|
}
|
|
|
|
#undef fopen
|
|
FILE *mingw_fopen (const char *filename, const char *otype)
|
|
{
|
|
int hide = needs_hiding(filename);
|
|
FILE *file;
|
|
wchar_t wfilename[MAX_PATH], wotype[4];
|
|
if (filename && !strcmp(filename, "/dev/null"))
|
|
filename = "nul";
|
|
if (xutftowcs_path(wfilename, filename) < 0 ||
|
|
xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
|
|
return NULL;
|
|
if (hide && !access(filename, F_OK) && set_hidden_flag(wfilename, 0)) {
|
|
error("could not unhide %s", filename);
|
|
return NULL;
|
|
}
|
|
file = _wfopen(wfilename, wotype);
|
|
if (!file && GetLastError() == ERROR_INVALID_NAME)
|
|
errno = ENOENT;
|
|
if (file && hide && set_hidden_flag(wfilename, 1))
|
|
warning("could not mark '%s' as hidden.", filename);
|
|
return file;
|
|
}
|
|
|
|
FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream)
|
|
{
|
|
int hide = needs_hiding(filename);
|
|
FILE *file;
|
|
wchar_t wfilename[MAX_PATH], wotype[4];
|
|
if (filename && !strcmp(filename, "/dev/null"))
|
|
filename = "nul";
|
|
if (xutftowcs_path(wfilename, filename) < 0 ||
|
|
xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
|
|
return NULL;
|
|
if (hide && !access(filename, F_OK) && set_hidden_flag(wfilename, 0)) {
|
|
error("could not unhide %s", filename);
|
|
return NULL;
|
|
}
|
|
file = _wfreopen(wfilename, wotype, stream);
|
|
if (file && hide && set_hidden_flag(wfilename, 1))
|
|
warning("could not mark '%s' as hidden.", filename);
|
|
return file;
|
|
}
|
|
|
|
#undef fflush
|
|
int mingw_fflush(FILE *stream)
|
|
{
|
|
int ret = fflush(stream);
|
|
|
|
/*
|
|
* write() is used behind the scenes of stdio output functions.
|
|
* Since git code does not check for errors after each stdio write
|
|
* operation, it can happen that write() is called by a later
|
|
* stdio function even if an earlier write() call failed. In the
|
|
* case of a pipe whose readable end was closed, only the first
|
|
* call to write() reports EPIPE on Windows. Subsequent write()
|
|
* calls report EINVAL. It is impossible to notice whether this
|
|
* fflush invocation triggered such a case, therefore, we have to
|
|
* catch all EINVAL errors whole-sale.
|
|
*/
|
|
if (ret && errno == EINVAL)
|
|
errno = EPIPE;
|
|
|
|
return ret;
|
|
}
|
|
|
|
#undef write
|
|
ssize_t mingw_write(int fd, const void *buf, size_t len)
|
|
{
|
|
ssize_t result = write(fd, buf, len);
|
|
|
|
if (result < 0 && errno == EINVAL && buf) {
|
|
/* check if fd is a pipe */
|
|
HANDLE h = (HANDLE) _get_osfhandle(fd);
|
|
if (GetFileType(h) == FILE_TYPE_PIPE)
|
|
errno = EPIPE;
|
|
else
|
|
errno = EINVAL;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int mingw_access(const char *filename, int mode)
|
|
{
|
|
wchar_t wfilename[MAX_PATH];
|
|
if (xutftowcs_path(wfilename, filename) < 0)
|
|
return -1;
|
|
/* X_OK is not supported by the MSVCRT version */
|
|
return _waccess(wfilename, mode & ~X_OK);
|
|
}
|
|
|
|
int mingw_chdir(const char *dirname)
|
|
{
|
|
wchar_t wdirname[MAX_PATH];
|
|
if (xutftowcs_path(wdirname, dirname) < 0)
|
|
return -1;
|
|
return _wchdir(wdirname);
|
|
}
|
|
|
|
int mingw_chmod(const char *filename, int mode)
|
|
{
|
|
wchar_t wfilename[MAX_PATH];
|
|
if (xutftowcs_path(wfilename, filename) < 0)
|
|
return -1;
|
|
return _wchmod(wfilename, mode);
|
|
}
|
|
|
|
/*
|
|
* The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
|
|
* Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
|
|
*/
|
|
static inline long long filetime_to_hnsec(const FILETIME *ft)
|
|
{
|
|
long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
|
|
/* Windows to Unix Epoch conversion */
|
|
return winTime - 116444736000000000LL;
|
|
}
|
|
|
|
static inline void filetime_to_timespec(const FILETIME *ft, struct timespec *ts)
|
|
{
|
|
long long hnsec = filetime_to_hnsec(ft);
|
|
ts->tv_sec = (time_t)(hnsec / 10000000);
|
|
ts->tv_nsec = (hnsec % 10000000) * 100;
|
|
}
|
|
|
|
/**
|
|
* Verifies that safe_create_leading_directories() would succeed.
|
|
*/
|
|
static int has_valid_directory_prefix(wchar_t *wfilename)
|
|
{
|
|
int n = wcslen(wfilename);
|
|
|
|
while (n > 0) {
|
|
wchar_t c = wfilename[--n];
|
|
DWORD attributes;
|
|
|
|
if (!is_dir_sep(c))
|
|
continue;
|
|
|
|
wfilename[n] = L'\0';
|
|
attributes = GetFileAttributesW(wfilename);
|
|
wfilename[n] = c;
|
|
if (attributes == FILE_ATTRIBUTE_DIRECTORY ||
|
|
attributes == FILE_ATTRIBUTE_DEVICE)
|
|
return 1;
|
|
if (attributes == INVALID_FILE_ATTRIBUTES)
|
|
switch (GetLastError()) {
|
|
case ERROR_PATH_NOT_FOUND:
|
|
continue;
|
|
case ERROR_FILE_NOT_FOUND:
|
|
/* This implies parent directory exists. */
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* We keep the do_lstat code in a separate function to avoid recursion.
|
|
* When a path ends with a slash, the stat will fail with ENOENT. In
|
|
* this case, we strip the trailing slashes and stat again.
|
|
*
|
|
* If follow is true then act like stat() and report on the link
|
|
* target. Otherwise report on the link itself.
|
|
*/
|
|
static int do_lstat(int follow, const char *file_name, struct stat *buf)
|
|
{
|
|
WIN32_FILE_ATTRIBUTE_DATA fdata;
|
|
wchar_t wfilename[MAX_PATH];
|
|
if (xutftowcs_path(wfilename, file_name) < 0)
|
|
return -1;
|
|
|
|
if (GetFileAttributesExW(wfilename, GetFileExInfoStandard, &fdata)) {
|
|
buf->st_ino = 0;
|
|
buf->st_gid = 0;
|
|
buf->st_uid = 0;
|
|
buf->st_nlink = 1;
|
|
buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
|
|
buf->st_size = fdata.nFileSizeLow |
|
|
(((off_t)fdata.nFileSizeHigh)<<32);
|
|
buf->st_dev = buf->st_rdev = 0; /* not used by Git */
|
|
filetime_to_timespec(&(fdata.ftLastAccessTime), &(buf->st_atim));
|
|
filetime_to_timespec(&(fdata.ftLastWriteTime), &(buf->st_mtim));
|
|
filetime_to_timespec(&(fdata.ftCreationTime), &(buf->st_ctim));
|
|
if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
|
|
WIN32_FIND_DATAW findbuf;
|
|
HANDLE handle = FindFirstFileW(wfilename, &findbuf);
|
|
if (handle != INVALID_HANDLE_VALUE) {
|
|
if ((findbuf.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
|
|
(findbuf.dwReserved0 == IO_REPARSE_TAG_SYMLINK)) {
|
|
if (follow) {
|
|
char buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
|
|
buf->st_size = readlink(file_name, buffer, MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
|
|
} else {
|
|
buf->st_mode = S_IFLNK;
|
|
}
|
|
buf->st_mode |= S_IREAD;
|
|
if (!(findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
|
|
buf->st_mode |= S_IWRITE;
|
|
}
|
|
FindClose(handle);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
switch (GetLastError()) {
|
|
case ERROR_ACCESS_DENIED:
|
|
case ERROR_SHARING_VIOLATION:
|
|
case ERROR_LOCK_VIOLATION:
|
|
case ERROR_SHARING_BUFFER_EXCEEDED:
|
|
errno = EACCES;
|
|
break;
|
|
case ERROR_BUFFER_OVERFLOW:
|
|
errno = ENAMETOOLONG;
|
|
break;
|
|
case ERROR_NOT_ENOUGH_MEMORY:
|
|
errno = ENOMEM;
|
|
break;
|
|
case ERROR_PATH_NOT_FOUND:
|
|
if (!has_valid_directory_prefix(wfilename)) {
|
|
errno = ENOTDIR;
|
|
break;
|
|
}
|
|
/* fallthru */
|
|
default:
|
|
errno = ENOENT;
|
|
break;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/* We provide our own lstat/fstat functions, since the provided
|
|
* lstat/fstat functions are so slow. These stat functions are
|
|
* tailored for Git's usage (read: fast), and are not meant to be
|
|
* complete. Note that Git stat()s are redirected to mingw_lstat()
|
|
* too, since Windows doesn't really handle symlinks that well.
|
|
*/
|
|
static int do_stat_internal(int follow, const char *file_name, struct stat *buf)
|
|
{
|
|
int namelen;
|
|
char alt_name[PATH_MAX];
|
|
|
|
if (!do_lstat(follow, file_name, buf))
|
|
return 0;
|
|
|
|
/* if file_name ended in a '/', Windows returned ENOENT;
|
|
* try again without trailing slashes
|
|
*/
|
|
if (errno != ENOENT)
|
|
return -1;
|
|
|
|
namelen = strlen(file_name);
|
|
if (namelen && file_name[namelen-1] != '/')
|
|
return -1;
|
|
while (namelen && file_name[namelen-1] == '/')
|
|
--namelen;
|
|
if (!namelen || namelen >= PATH_MAX)
|
|
return -1;
|
|
|
|
memcpy(alt_name, file_name, namelen);
|
|
alt_name[namelen] = 0;
|
|
return do_lstat(follow, alt_name, buf);
|
|
}
|
|
|
|
static int get_file_info_by_handle(HANDLE hnd, struct stat *buf)
|
|
{
|
|
BY_HANDLE_FILE_INFORMATION fdata;
|
|
|
|
if (!GetFileInformationByHandle(hnd, &fdata)) {
|
|
errno = err_win_to_posix(GetLastError());
|
|
return -1;
|
|
}
|
|
|
|
buf->st_ino = 0;
|
|
buf->st_gid = 0;
|
|
buf->st_uid = 0;
|
|
buf->st_nlink = 1;
|
|
buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
|
|
buf->st_size = fdata.nFileSizeLow |
|
|
(((off_t)fdata.nFileSizeHigh)<<32);
|
|
buf->st_dev = buf->st_rdev = 0; /* not used by Git */
|
|
filetime_to_timespec(&(fdata.ftLastAccessTime), &(buf->st_atim));
|
|
filetime_to_timespec(&(fdata.ftLastWriteTime), &(buf->st_mtim));
|
|
filetime_to_timespec(&(fdata.ftCreationTime), &(buf->st_ctim));
|
|
return 0;
|
|
}
|
|
|
|
int mingw_lstat(const char *file_name, struct stat *buf)
|
|
{
|
|
return do_stat_internal(0, file_name, buf);
|
|
}
|
|
int mingw_stat(const char *file_name, struct stat *buf)
|
|
{
|
|
return do_stat_internal(1, file_name, buf);
|
|
}
|
|
|
|
int mingw_fstat(int fd, struct stat *buf)
|
|
{
|
|
HANDLE fh = (HANDLE)_get_osfhandle(fd);
|
|
DWORD avail, type = GetFileType(fh) & ~FILE_TYPE_REMOTE;
|
|
|
|
switch (type) {
|
|
case FILE_TYPE_DISK:
|
|
return get_file_info_by_handle(fh, buf);
|
|
|
|
case FILE_TYPE_CHAR:
|
|
case FILE_TYPE_PIPE:
|
|
/* initialize stat fields */
|
|
memset(buf, 0, sizeof(*buf));
|
|
buf->st_nlink = 1;
|
|
|
|
if (type == FILE_TYPE_CHAR) {
|
|
buf->st_mode = _S_IFCHR;
|
|
} else {
|
|
buf->st_mode = _S_IFIFO;
|
|
if (PeekNamedPipe(fh, NULL, 0, NULL, &avail, NULL))
|
|
buf->st_size = avail;
|
|
}
|
|
return 0;
|
|
|
|
default:
|
|
errno = EBADF;
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
static inline void time_t_to_filetime(time_t t, FILETIME *ft)
|
|
{
|
|
long long winTime = t * 10000000LL + 116444736000000000LL;
|
|
ft->dwLowDateTime = winTime;
|
|
ft->dwHighDateTime = winTime >> 32;
|
|
}
|
|
|
|
int mingw_utime (const char *file_name, const struct utimbuf *times)
|
|
{
|
|
FILETIME mft, aft;
|
|
int fh, rc;
|
|
DWORD attrs;
|
|
wchar_t wfilename[MAX_PATH];
|
|
if (xutftowcs_path(wfilename, file_name) < 0)
|
|
return -1;
|
|
|
|
/* must have write permission */
|
|
attrs = GetFileAttributesW(wfilename);
|
|
if (attrs != INVALID_FILE_ATTRIBUTES &&
|
|
(attrs & FILE_ATTRIBUTE_READONLY)) {
|
|
/* ignore errors here; open() will report them */
|
|
SetFileAttributesW(wfilename, attrs & ~FILE_ATTRIBUTE_READONLY);
|
|
}
|
|
|
|
if ((fh = _wopen(wfilename, O_RDWR | O_BINARY)) < 0) {
|
|
rc = -1;
|
|
goto revert_attrs;
|
|
}
|
|
|
|
if (times) {
|
|
time_t_to_filetime(times->modtime, &mft);
|
|
time_t_to_filetime(times->actime, &aft);
|
|
} else {
|
|
GetSystemTimeAsFileTime(&mft);
|
|
aft = mft;
|
|
}
|
|
if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
|
|
errno = EINVAL;
|
|
rc = -1;
|
|
} else
|
|
rc = 0;
|
|
close(fh);
|
|
|
|
revert_attrs:
|
|
if (attrs != INVALID_FILE_ATTRIBUTES &&
|
|
(attrs & FILE_ATTRIBUTE_READONLY)) {
|
|
/* ignore errors again */
|
|
SetFileAttributesW(wfilename, attrs);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
#undef strftime
|
|
size_t mingw_strftime(char *s, size_t max,
|
|
const char *format, const struct tm *tm)
|
|
{
|
|
size_t ret = strftime(s, max, format, tm);
|
|
|
|
if (!ret && errno == EINVAL)
|
|
die("invalid strftime format: '%s'", format);
|
|
return ret;
|
|
}
|
|
|
|
unsigned int sleep (unsigned int seconds)
|
|
{
|
|
Sleep(seconds*1000);
|
|
return 0;
|
|
}
|
|
|
|
char *mingw_mktemp(char *template)
|
|
{
|
|
wchar_t wtemplate[MAX_PATH];
|
|
if (xutftowcs_path(wtemplate, template) < 0)
|
|
return NULL;
|
|
if (!_wmktemp(wtemplate))
|
|
return NULL;
|
|
if (xwcstoutf(template, wtemplate, strlen(template) + 1) < 0)
|
|
return NULL;
|
|
return template;
|
|
}
|
|
|
|
int mkstemp(char *template)
|
|
{
|
|
char *filename = mktemp(template);
|
|
if (filename == NULL)
|
|
return -1;
|
|
return open(filename, O_RDWR | O_CREAT, 0600);
|
|
}
|
|
|
|
int gettimeofday(struct timeval *tv, void *tz)
|
|
{
|
|
FILETIME ft;
|
|
long long hnsec;
|
|
|
|
GetSystemTimeAsFileTime(&ft);
|
|
hnsec = filetime_to_hnsec(&ft);
|
|
tv->tv_sec = hnsec / 10000000;
|
|
tv->tv_usec = (hnsec % 10000000) / 10;
|
|
return 0;
|
|
}
|
|
|
|
int pipe(int filedes[2])
|
|
{
|
|
HANDLE h[2];
|
|
|
|
/* this creates non-inheritable handles */
|
|
if (!CreatePipe(&h[0], &h[1], NULL, 8192)) {
|
|
errno = err_win_to_posix(GetLastError());
|
|
return -1;
|
|
}
|
|
filedes[0] = _open_osfhandle(HCAST(int, h[0]), O_NOINHERIT);
|
|
if (filedes[0] < 0) {
|
|
CloseHandle(h[0]);
|
|
CloseHandle(h[1]);
|
|
return -1;
|
|
}
|
|
filedes[1] = _open_osfhandle(HCAST(int, h[1]), O_NOINHERIT);
|
|
if (filedes[1] < 0) {
|
|
close(filedes[0]);
|
|
CloseHandle(h[1]);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
struct tm *gmtime_r(const time_t *timep, struct tm *result)
|
|
{
|
|
/* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
|
|
memcpy(result, gmtime(timep), sizeof(struct tm));
|
|
return result;
|
|
}
|
|
|
|
struct tm *localtime_r(const time_t *timep, struct tm *result)
|
|
{
|
|
/* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
|
|
memcpy(result, localtime(timep), sizeof(struct tm));
|
|
return result;
|
|
}
|
|
|
|
char *mingw_getcwd(char *pointer, int len)
|
|
{
|
|
wchar_t wpointer[MAX_PATH];
|
|
if (!_wgetcwd(wpointer, ARRAY_SIZE(wpointer)))
|
|
return NULL;
|
|
if (xwcstoutf(pointer, wpointer, len) < 0)
|
|
return NULL;
|
|
convert_slashes(pointer);
|
|
return pointer;
|
|
}
|
|
|
|
/*
|
|
* See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx
|
|
* (Parsing C++ Command-Line Arguments)
|
|
*/
|
|
static const char *quote_arg(const char *arg)
|
|
{
|
|
/* count chars to quote */
|
|
int len = 0, n = 0;
|
|
int force_quotes = 0;
|
|
char *q, *d;
|
|
const char *p = arg;
|
|
if (!*p) force_quotes = 1;
|
|
while (*p) {
|
|
if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'')
|
|
force_quotes = 1;
|
|
else if (*p == '"')
|
|
n++;
|
|
else if (*p == '\\') {
|
|
int count = 0;
|
|
while (*p == '\\') {
|
|
count++;
|
|
p++;
|
|
len++;
|
|
}
|
|
if (*p == '"')
|
|
n += count*2 + 1;
|
|
continue;
|
|
}
|
|
len++;
|
|
p++;
|
|
}
|
|
if (!force_quotes && n == 0)
|
|
return arg;
|
|
|
|
/* insert \ where necessary */
|
|
d = q = xmalloc(st_add3(len, n, 3));
|
|
*d++ = '"';
|
|
while (*arg) {
|
|
if (*arg == '"')
|
|
*d++ = '\\';
|
|
else if (*arg == '\\') {
|
|
int count = 0;
|
|
while (*arg == '\\') {
|
|
count++;
|
|
*d++ = *arg++;
|
|
}
|
|
if (*arg == '"') {
|
|
while (count-- > 0)
|
|
*d++ = '\\';
|
|
*d++ = '\\';
|
|
}
|
|
}
|
|
*d++ = *arg++;
|
|
}
|
|
*d++ = '"';
|
|
*d++ = 0;
|
|
return q;
|
|
}
|
|
|
|
static const char *parse_interpreter(const char *cmd)
|
|
{
|
|
static char buf[100];
|
|
char *p, *opt;
|
|
int n, fd;
|
|
|
|
/* don't even try a .exe */
|
|
n = strlen(cmd);
|
|
if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
|
|
return NULL;
|
|
|
|
fd = open(cmd, O_RDONLY);
|
|
if (fd < 0)
|
|
return NULL;
|
|
n = read(fd, buf, sizeof(buf)-1);
|
|
close(fd);
|
|
if (n < 4) /* at least '#!/x' and not error */
|
|
return NULL;
|
|
|
|
if (buf[0] != '#' || buf[1] != '!')
|
|
return NULL;
|
|
buf[n] = '\0';
|
|
p = buf + strcspn(buf, "\r\n");
|
|
if (!*p)
|
|
return NULL;
|
|
|
|
*p = '\0';
|
|
if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
|
|
return NULL;
|
|
/* strip options */
|
|
if ((opt = strchr(p+1, ' ')))
|
|
*opt = '\0';
|
|
return p+1;
|
|
}
|
|
|
|
/*
|
|
* exe_only means that we only want to detect .exe files, but not scripts
|
|
* (which do not have an extension)
|
|
*/
|
|
static char *lookup_prog(const char *dir, int dirlen, const char *cmd,
|
|
int isexe, int exe_only)
|
|
{
|
|
char path[MAX_PATH];
|
|
snprintf(path, sizeof(path), "%.*s\\%s.exe", dirlen, dir, cmd);
|
|
|
|
if (!isexe && access(path, F_OK) == 0)
|
|
return xstrdup(path);
|
|
path[strlen(path)-4] = '\0';
|
|
if ((!exe_only || isexe) && access(path, F_OK) == 0)
|
|
if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY))
|
|
return xstrdup(path);
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Determines the absolute path of cmd using the split path in path.
|
|
* If cmd contains a slash or backslash, no lookup is performed.
|
|
*/
|
|
static char *path_lookup(const char *cmd, int exe_only)
|
|
{
|
|
const char *path;
|
|
char *prog = NULL;
|
|
int len = strlen(cmd);
|
|
int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
|
|
|
|
if (strchr(cmd, '/') || strchr(cmd, '\\'))
|
|
return xstrdup(cmd);
|
|
|
|
path = mingw_getenv("PATH");
|
|
if (!path)
|
|
return NULL;
|
|
|
|
while (!prog) {
|
|
const char *sep = strchrnul(path, ';');
|
|
int dirlen = sep - path;
|
|
if (dirlen)
|
|
prog = lookup_prog(path, dirlen, cmd, isexe, exe_only);
|
|
if (!*sep)
|
|
break;
|
|
path = sep + 1;
|
|
}
|
|
|
|
return prog;
|
|
}
|
|
|
|
static int do_putenv(char **env, const char *name, int size, int free_old);
|
|
|
|
/* used number of elements of environ array, including terminating NULL */
|
|
static int environ_size = 0;
|
|
/* allocated size of environ array, in bytes */
|
|
static int environ_alloc = 0;
|
|
|
|
/*
|
|
* Create environment block suitable for CreateProcess. Merges current
|
|
* process environment and the supplied environment changes.
|
|
*/
|
|
static wchar_t *make_environment_block(char **deltaenv)
|
|
{
|
|
wchar_t *wenvblk = NULL;
|
|
char **tmpenv;
|
|
int i = 0, size = environ_size, wenvsz = 0, wenvpos = 0;
|
|
|
|
while (deltaenv && deltaenv[i])
|
|
i++;
|
|
|
|
/* copy the environment, leaving space for changes */
|
|
ALLOC_ARRAY(tmpenv, size + i);
|
|
memcpy(tmpenv, environ, size * sizeof(char*));
|
|
|
|
/* merge supplied environment changes into the temporary environment */
|
|
for (i = 0; deltaenv && deltaenv[i]; i++)
|
|
size = do_putenv(tmpenv, deltaenv[i], size, 0);
|
|
|
|
/* create environment block from temporary environment */
|
|
for (i = 0; tmpenv[i]; i++) {
|
|
size = 2 * strlen(tmpenv[i]) + 2; /* +2 for final \0 */
|
|
ALLOC_GROW(wenvblk, (wenvpos + size) * sizeof(wchar_t), wenvsz);
|
|
wenvpos += xutftowcs(&wenvblk[wenvpos], tmpenv[i], size) + 1;
|
|
}
|
|
/* add final \0 terminator */
|
|
wenvblk[wenvpos] = 0;
|
|
free(tmpenv);
|
|
return wenvblk;
|
|
}
|
|
|
|
struct pinfo_t {
|
|
struct pinfo_t *next;
|
|
pid_t pid;
|
|
HANDLE proc;
|
|
};
|
|
static struct pinfo_t *pinfo = NULL;
|
|
CRITICAL_SECTION pinfo_cs;
|
|
|
|
static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **deltaenv,
|
|
const char *dir,
|
|
int prepend_cmd, int fhin, int fhout, int fherr)
|
|
{
|
|
STARTUPINFOW si;
|
|
PROCESS_INFORMATION pi;
|
|
struct strbuf args;
|
|
wchar_t wcmd[MAX_PATH], wdir[MAX_PATH], *wargs, *wenvblk = NULL;
|
|
unsigned flags = CREATE_UNICODE_ENVIRONMENT;
|
|
BOOL ret;
|
|
|
|
/* Determine whether or not we are associated to a console */
|
|
HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE,
|
|
FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
|
|
FILE_ATTRIBUTE_NORMAL, NULL);
|
|
if (cons == INVALID_HANDLE_VALUE) {
|
|
/* There is no console associated with this process.
|
|
* Since the child is a console process, Windows
|
|
* would normally create a console window. But
|
|
* since we'll be redirecting std streams, we do
|
|
* not need the console.
|
|
* It is necessary to use DETACHED_PROCESS
|
|
* instead of CREATE_NO_WINDOW to make ssh
|
|
* recognize that it has no console.
|
|
*/
|
|
flags |= DETACHED_PROCESS;
|
|
} else {
|
|
/* There is already a console. If we specified
|
|
* DETACHED_PROCESS here, too, Windows would
|
|
* disassociate the child from the console.
|
|
* The same is true for CREATE_NO_WINDOW.
|
|
* Go figure!
|
|
*/
|
|
CloseHandle(cons);
|
|
}
|
|
memset(&si, 0, sizeof(si));
|
|
si.cb = sizeof(si);
|
|
si.dwFlags = STARTF_USESTDHANDLES;
|
|
si.hStdInput = winansi_get_osfhandle(fhin);
|
|
si.hStdOutput = winansi_get_osfhandle(fhout);
|
|
si.hStdError = winansi_get_osfhandle(fherr);
|
|
|
|
if (xutftowcs_path(wcmd, cmd) < 0)
|
|
return -1;
|
|
if (dir && xutftowcs_path(wdir, dir) < 0)
|
|
return -1;
|
|
|
|
/* concatenate argv, quoting args as we go */
|
|
strbuf_init(&args, 0);
|
|
if (prepend_cmd) {
|
|
char *quoted = (char *)quote_arg(cmd);
|
|
strbuf_addstr(&args, quoted);
|
|
if (quoted != cmd)
|
|
free(quoted);
|
|
}
|
|
for (; *argv; argv++) {
|
|
char *quoted = (char *)quote_arg(*argv);
|
|
if (*args.buf)
|
|
strbuf_addch(&args, ' ');
|
|
strbuf_addstr(&args, quoted);
|
|
if (quoted != *argv)
|
|
free(quoted);
|
|
}
|
|
|
|
ALLOC_ARRAY(wargs, st_add(st_mult(2, args.len), 1));
|
|
xutftowcs(wargs, args.buf, 2 * args.len + 1);
|
|
strbuf_release(&args);
|
|
|
|
wenvblk = make_environment_block(deltaenv);
|
|
|
|
memset(&pi, 0, sizeof(pi));
|
|
ret = CreateProcessW(wcmd, wargs, NULL, NULL, TRUE, flags,
|
|
wenvblk, dir ? wdir : NULL, &si, &pi);
|
|
|
|
free(wenvblk);
|
|
free(wargs);
|
|
|
|
if (!ret) {
|
|
errno = ENOENT;
|
|
return -1;
|
|
}
|
|
CloseHandle(pi.hThread);
|
|
|
|
/*
|
|
* The process ID is the human-readable identifier of the process
|
|
* that we want to present in log and error messages. The handle
|
|
* is not useful for this purpose. But we cannot close it, either,
|
|
* because it is not possible to turn a process ID into a process
|
|
* handle after the process terminated.
|
|
* Keep the handle in a list for waitpid.
|
|
*/
|
|
EnterCriticalSection(&pinfo_cs);
|
|
{
|
|
struct pinfo_t *info = xmalloc(sizeof(struct pinfo_t));
|
|
info->pid = pi.dwProcessId;
|
|
info->proc = pi.hProcess;
|
|
info->next = pinfo;
|
|
pinfo = info;
|
|
}
|
|
LeaveCriticalSection(&pinfo_cs);
|
|
|
|
return (pid_t)pi.dwProcessId;
|
|
}
|
|
|
|
static pid_t mingw_spawnv(const char *cmd, const char **argv, int prepend_cmd)
|
|
{
|
|
return mingw_spawnve_fd(cmd, argv, NULL, NULL, prepend_cmd, 0, 1, 2);
|
|
}
|
|
|
|
pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **deltaenv,
|
|
const char *dir,
|
|
int fhin, int fhout, int fherr)
|
|
{
|
|
pid_t pid;
|
|
char *prog = path_lookup(cmd, 0);
|
|
|
|
if (!prog) {
|
|
errno = ENOENT;
|
|
pid = -1;
|
|
}
|
|
else {
|
|
const char *interpr = parse_interpreter(prog);
|
|
|
|
if (interpr) {
|
|
const char *argv0 = argv[0];
|
|
char *iprog = path_lookup(interpr, 1);
|
|
argv[0] = prog;
|
|
if (!iprog) {
|
|
errno = ENOENT;
|
|
pid = -1;
|
|
}
|
|
else {
|
|
pid = mingw_spawnve_fd(iprog, argv, deltaenv, dir, 1,
|
|
fhin, fhout, fherr);
|
|
free(iprog);
|
|
}
|
|
argv[0] = argv0;
|
|
}
|
|
else
|
|
pid = mingw_spawnve_fd(prog, argv, deltaenv, dir, 0,
|
|
fhin, fhout, fherr);
|
|
free(prog);
|
|
}
|
|
return pid;
|
|
}
|
|
|
|
static int try_shell_exec(const char *cmd, char *const *argv)
|
|
{
|
|
const char *interpr = parse_interpreter(cmd);
|
|
char *prog;
|
|
int pid = 0;
|
|
|
|
if (!interpr)
|
|
return 0;
|
|
prog = path_lookup(interpr, 1);
|
|
if (prog) {
|
|
int argc = 0;
|
|
const char **argv2;
|
|
while (argv[argc]) argc++;
|
|
ALLOC_ARRAY(argv2, argc + 1);
|
|
argv2[0] = (char *)cmd; /* full path to the script file */
|
|
memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
|
|
pid = mingw_spawnv(prog, argv2, 1);
|
|
if (pid >= 0) {
|
|
int status;
|
|
if (waitpid(pid, &status, 0) < 0)
|
|
status = 255;
|
|
exit(status);
|
|
}
|
|
pid = 1; /* indicate that we tried but failed */
|
|
free(prog);
|
|
free(argv2);
|
|
}
|
|
return pid;
|
|
}
|
|
|
|
int mingw_execv(const char *cmd, char *const *argv)
|
|
{
|
|
/* check if git_command is a shell script */
|
|
if (!try_shell_exec(cmd, argv)) {
|
|
int pid, status;
|
|
|
|
pid = mingw_spawnv(cmd, (const char **)argv, 0);
|
|
if (pid < 0)
|
|
return -1;
|
|
if (waitpid(pid, &status, 0) < 0)
|
|
status = 255;
|
|
exit(status);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int mingw_execvp(const char *cmd, char *const *argv)
|
|
{
|
|
char *prog = path_lookup(cmd, 0);
|
|
|
|
if (prog) {
|
|
mingw_execv(prog, argv);
|
|
free(prog);
|
|
} else
|
|
errno = ENOENT;
|
|
|
|
return -1;
|
|
}
|
|
|
|
int mingw_kill(pid_t pid, int sig)
|
|
{
|
|
if (pid > 0 && sig == SIGTERM) {
|
|
HANDLE h = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
|
|
|
|
if (TerminateProcess(h, -1)) {
|
|
CloseHandle(h);
|
|
return 0;
|
|
}
|
|
|
|
errno = err_win_to_posix(GetLastError());
|
|
CloseHandle(h);
|
|
return -1;
|
|
} else if (pid > 0 && sig == 0) {
|
|
HANDLE h = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
|
|
if (h) {
|
|
CloseHandle(h);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Compare environment entries by key (i.e. stopping at '=' or '\0').
|
|
*/
|
|
static int compareenv(const void *v1, const void *v2)
|
|
{
|
|
const char *e1 = *(const char**)v1;
|
|
const char *e2 = *(const char**)v2;
|
|
|
|
for (;;) {
|
|
int c1 = *e1++;
|
|
int c2 = *e2++;
|
|
c1 = (c1 == '=') ? 0 : tolower(c1);
|
|
c2 = (c2 == '=') ? 0 : tolower(c2);
|
|
if (c1 > c2)
|
|
return 1;
|
|
if (c1 < c2)
|
|
return -1;
|
|
if (c1 == 0)
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static int bsearchenv(char **env, const char *name, size_t size)
|
|
{
|
|
unsigned low = 0, high = size;
|
|
while (low < high) {
|
|
unsigned mid = low + ((high - low) >> 1);
|
|
int cmp = compareenv(&env[mid], &name);
|
|
if (cmp < 0)
|
|
low = mid + 1;
|
|
else if (cmp > 0)
|
|
high = mid;
|
|
else
|
|
return mid;
|
|
}
|
|
return ~low; /* not found, return 1's complement of insert position */
|
|
}
|
|
|
|
/*
|
|
* If name contains '=', then sets the variable, otherwise it unsets it
|
|
* Size includes the terminating NULL. Env must have room for size + 1 entries
|
|
* (in case of insert). Returns the new size. Optionally frees removed entries.
|
|
*/
|
|
static int do_putenv(char **env, const char *name, int size, int free_old)
|
|
{
|
|
int i = bsearchenv(env, name, size - 1);
|
|
|
|
/* optionally free removed / replaced entry */
|
|
if (i >= 0 && free_old)
|
|
free(env[i]);
|
|
|
|
if (strchr(name, '=')) {
|
|
/* if new value ('key=value') is specified, insert or replace entry */
|
|
if (i < 0) {
|
|
i = ~i;
|
|
memmove(&env[i + 1], &env[i], (size - i) * sizeof(char*));
|
|
size++;
|
|
}
|
|
env[i] = (char*) name;
|
|
} else if (i >= 0) {
|
|
/* otherwise ('key') remove existing entry */
|
|
size--;
|
|
memmove(&env[i], &env[i + 1], (size - i) * sizeof(char*));
|
|
}
|
|
return size;
|
|
}
|
|
|
|
char *mingw_getenv(const char *name)
|
|
{
|
|
char *value;
|
|
int pos = bsearchenv(environ, name, environ_size - 1);
|
|
if (pos < 0)
|
|
return NULL;
|
|
value = strchr(environ[pos], '=');
|
|
return value ? &value[1] : NULL;
|
|
}
|
|
|
|
int mingw_putenv(const char *namevalue)
|
|
{
|
|
ALLOC_GROW(environ, (environ_size + 1) * sizeof(char*), environ_alloc);
|
|
environ_size = do_putenv(environ, namevalue, environ_size, 1);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Note, this isn't a complete replacement for getaddrinfo. It assumes
|
|
* that service contains a numerical port, or that it is null. It
|
|
* does a simple search using gethostbyname, and returns one IPv4 host
|
|
* if one was found.
|
|
*/
|
|
static int WSAAPI getaddrinfo_stub(const char *node, const char *service,
|
|
const struct addrinfo *hints,
|
|
struct addrinfo **res)
|
|
{
|
|
struct hostent *h = NULL;
|
|
struct addrinfo *ai;
|
|
struct sockaddr_in *sin;
|
|
|
|
if (node) {
|
|
h = gethostbyname(node);
|
|
if (!h)
|
|
return WSAGetLastError();
|
|
}
|
|
|
|
ai = xmalloc(sizeof(struct addrinfo));
|
|
*res = ai;
|
|
ai->ai_flags = 0;
|
|
ai->ai_family = AF_INET;
|
|
ai->ai_socktype = hints ? hints->ai_socktype : 0;
|
|
switch (ai->ai_socktype) {
|
|
case SOCK_STREAM:
|
|
ai->ai_protocol = IPPROTO_TCP;
|
|
break;
|
|
case SOCK_DGRAM:
|
|
ai->ai_protocol = IPPROTO_UDP;
|
|
break;
|
|
default:
|
|
ai->ai_protocol = 0;
|
|
break;
|
|
}
|
|
ai->ai_addrlen = sizeof(struct sockaddr_in);
|
|
if (hints && (hints->ai_flags & AI_CANONNAME))
|
|
ai->ai_canonname = h ? xstrdup(h->h_name) : NULL;
|
|
else
|
|
ai->ai_canonname = NULL;
|
|
|
|
sin = xcalloc(1, ai->ai_addrlen);
|
|
sin->sin_family = AF_INET;
|
|
/* Note: getaddrinfo is supposed to allow service to be a string,
|
|
* which should be looked up using getservbyname. This is
|
|
* currently not implemented */
|
|
if (service)
|
|
sin->sin_port = htons(atoi(service));
|
|
if (h)
|
|
sin->sin_addr = *(struct in_addr *)h->h_addr;
|
|
else if (hints && (hints->ai_flags & AI_PASSIVE))
|
|
sin->sin_addr.s_addr = INADDR_ANY;
|
|
else
|
|
sin->sin_addr.s_addr = INADDR_LOOPBACK;
|
|
ai->ai_addr = (struct sockaddr *)sin;
|
|
ai->ai_next = NULL;
|
|
return 0;
|
|
}
|
|
|
|
static void WSAAPI freeaddrinfo_stub(struct addrinfo *res)
|
|
{
|
|
free(res->ai_canonname);
|
|
free(res->ai_addr);
|
|
free(res);
|
|
}
|
|
|
|
static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen,
|
|
char *host, DWORD hostlen,
|
|
char *serv, DWORD servlen, int flags)
|
|
{
|
|
const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
|
|
if (sa->sa_family != AF_INET)
|
|
return EAI_FAMILY;
|
|
if (!host && !serv)
|
|
return EAI_NONAME;
|
|
|
|
if (host && hostlen > 0) {
|
|
struct hostent *ent = NULL;
|
|
if (!(flags & NI_NUMERICHOST))
|
|
ent = gethostbyaddr((const char *)&sin->sin_addr,
|
|
sizeof(sin->sin_addr), AF_INET);
|
|
|
|
if (ent)
|
|
snprintf(host, hostlen, "%s", ent->h_name);
|
|
else if (flags & NI_NAMEREQD)
|
|
return EAI_NONAME;
|
|
else
|
|
snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr));
|
|
}
|
|
|
|
if (serv && servlen > 0) {
|
|
struct servent *ent = NULL;
|
|
if (!(flags & NI_NUMERICSERV))
|
|
ent = getservbyport(sin->sin_port,
|
|
flags & NI_DGRAM ? "udp" : "tcp");
|
|
|
|
if (ent)
|
|
snprintf(serv, servlen, "%s", ent->s_name);
|
|
else
|
|
snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static HMODULE ipv6_dll = NULL;
|
|
static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res);
|
|
static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service,
|
|
const struct addrinfo *hints,
|
|
struct addrinfo **res);
|
|
static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
|
|
char *host, DWORD hostlen,
|
|
char *serv, DWORD servlen, int flags);
|
|
/*
|
|
* gai_strerror is an inline function in the ws2tcpip.h header, so we
|
|
* don't need to try to load that one dynamically.
|
|
*/
|
|
|
|
static void socket_cleanup(void)
|
|
{
|
|
WSACleanup();
|
|
if (ipv6_dll)
|
|
FreeLibrary(ipv6_dll);
|
|
ipv6_dll = NULL;
|
|
ipv6_freeaddrinfo = freeaddrinfo_stub;
|
|
ipv6_getaddrinfo = getaddrinfo_stub;
|
|
ipv6_getnameinfo = getnameinfo_stub;
|
|
}
|
|
|
|
static void ensure_socket_initialization(void)
|
|
{
|
|
WSADATA wsa;
|
|
static int initialized = 0;
|
|
const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL };
|
|
const char **name;
|
|
|
|
if (initialized)
|
|
return;
|
|
|
|
if (WSAStartup(MAKEWORD(2,2), &wsa))
|
|
die("unable to initialize winsock subsystem, error %d",
|
|
WSAGetLastError());
|
|
|
|
for (name = libraries; *name; name++) {
|
|
ipv6_dll = LoadLibrary(*name);
|
|
if (!ipv6_dll)
|
|
continue;
|
|
|
|
ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *))
|
|
GetProcAddress(ipv6_dll, "freeaddrinfo");
|
|
ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *,
|
|
const struct addrinfo *,
|
|
struct addrinfo **))
|
|
GetProcAddress(ipv6_dll, "getaddrinfo");
|
|
ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *,
|
|
socklen_t, char *, DWORD,
|
|
char *, DWORD, int))
|
|
GetProcAddress(ipv6_dll, "getnameinfo");
|
|
if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
|
|
FreeLibrary(ipv6_dll);
|
|
ipv6_dll = NULL;
|
|
} else
|
|
break;
|
|
}
|
|
if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
|
|
ipv6_freeaddrinfo = freeaddrinfo_stub;
|
|
ipv6_getaddrinfo = getaddrinfo_stub;
|
|
ipv6_getnameinfo = getnameinfo_stub;
|
|
}
|
|
|
|
atexit(socket_cleanup);
|
|
initialized = 1;
|
|
}
|
|
|
|
#undef gethostname
|
|
int mingw_gethostname(char *name, int namelen)
|
|
{
|
|
ensure_socket_initialization();
|
|
return gethostname(name, namelen);
|
|
}
|
|
|
|
#undef gethostbyname
|
|
struct hostent *mingw_gethostbyname(const char *host)
|
|
{
|
|
ensure_socket_initialization();
|
|
return gethostbyname(host);
|
|
}
|
|
|
|
void mingw_freeaddrinfo(struct addrinfo *res)
|
|
{
|
|
ipv6_freeaddrinfo(res);
|
|
}
|
|
|
|
int mingw_getaddrinfo(const char *node, const char *service,
|
|
const struct addrinfo *hints, struct addrinfo **res)
|
|
{
|
|
ensure_socket_initialization();
|
|
return ipv6_getaddrinfo(node, service, hints, res);
|
|
}
|
|
|
|
int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
|
|
char *host, DWORD hostlen, char *serv, DWORD servlen,
|
|
int flags)
|
|
{
|
|
ensure_socket_initialization();
|
|
return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
|
|
}
|
|
|
|
int mingw_socket(int domain, int type, int protocol)
|
|
{
|
|
int sockfd;
|
|
SOCKET s;
|
|
|
|
ensure_socket_initialization();
|
|
s = WSASocket(domain, type, protocol, NULL, 0, 0);
|
|
if (s == INVALID_SOCKET) {
|
|
/*
|
|
* WSAGetLastError() values are regular BSD error codes
|
|
* biased by WSABASEERR.
|
|
* However, strerror() does not know about networking
|
|
* specific errors, which are values beginning at 38 or so.
|
|
* Therefore, we choose to leave the biased error code
|
|
* in errno so that _if_ someone looks up the code somewhere,
|
|
* then it is at least the number that are usually listed.
|
|
*/
|
|
errno = WSAGetLastError();
|
|
return -1;
|
|
}
|
|
/* convert into a file descriptor */
|
|
if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
|
|
closesocket(s);
|
|
return error("unable to make a socket file descriptor: %s",
|
|
strerror(errno));
|
|
}
|
|
return sockfd;
|
|
}
|
|
|
|
#undef connect
|
|
int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
|
|
{
|
|
SOCKET s = (SOCKET)_get_osfhandle(sockfd);
|
|
return connect(s, sa, sz);
|
|
}
|
|
|
|
#undef bind
|
|
int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz)
|
|
{
|
|
SOCKET s = (SOCKET)_get_osfhandle(sockfd);
|
|
return bind(s, sa, sz);
|
|
}
|
|
|
|
#undef setsockopt
|
|
int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen)
|
|
{
|
|
SOCKET s = (SOCKET)_get_osfhandle(sockfd);
|
|
return setsockopt(s, lvl, optname, (const char*)optval, optlen);
|
|
}
|
|
|
|
#undef shutdown
|
|
int mingw_shutdown(int sockfd, int how)
|
|
{
|
|
SOCKET s = (SOCKET)_get_osfhandle(sockfd);
|
|
return shutdown(s, how);
|
|
}
|
|
|
|
#undef listen
|
|
int mingw_listen(int sockfd, int backlog)
|
|
{
|
|
SOCKET s = (SOCKET)_get_osfhandle(sockfd);
|
|
return listen(s, backlog);
|
|
}
|
|
|
|
#undef accept
|
|
int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz)
|
|
{
|
|
int sockfd2;
|
|
|
|
SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1);
|
|
SOCKET s2 = accept(s1, sa, sz);
|
|
|
|
/* convert into a file descriptor */
|
|
if ((sockfd2 = _open_osfhandle(s2, O_RDWR|O_BINARY)) < 0) {
|
|
int err = errno;
|
|
closesocket(s2);
|
|
return error("unable to make a socket file descriptor: %s",
|
|
strerror(err));
|
|
}
|
|
return sockfd2;
|
|
}
|
|
|
|
#undef rename
|
|
int mingw_rename(const char *pold, const char *pnew)
|
|
{
|
|
DWORD attrs, gle;
|
|
int tries = 0;
|
|
wchar_t wpold[MAX_PATH], wpnew[MAX_PATH];
|
|
if (xutftowcs_path(wpold, pold) < 0 || xutftowcs_path(wpnew, pnew) < 0)
|
|
return -1;
|
|
|
|
/*
|
|
* Try native rename() first to get errno right.
|
|
* It is based on MoveFile(), which cannot overwrite existing files.
|
|
*/
|
|
if (!_wrename(wpold, wpnew))
|
|
return 0;
|
|
if (errno != EEXIST)
|
|
return -1;
|
|
repeat:
|
|
if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
|
|
return 0;
|
|
/* TODO: translate more errors */
|
|
gle = GetLastError();
|
|
if (gle == ERROR_ACCESS_DENIED &&
|
|
(attrs = GetFileAttributesW(wpnew)) != INVALID_FILE_ATTRIBUTES) {
|
|
if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
|
|
DWORD attrsold = GetFileAttributesW(wpold);
|
|
if (attrsold == INVALID_FILE_ATTRIBUTES ||
|
|
!(attrsold & FILE_ATTRIBUTE_DIRECTORY))
|
|
errno = EISDIR;
|
|
else if (!_wrmdir(wpnew))
|
|
goto repeat;
|
|
return -1;
|
|
}
|
|
if ((attrs & FILE_ATTRIBUTE_READONLY) &&
|
|
SetFileAttributesW(wpnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
|
|
if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
|
|
return 0;
|
|
gle = GetLastError();
|
|
/* revert file attributes on failure */
|
|
SetFileAttributesW(wpnew, attrs);
|
|
}
|
|
}
|
|
if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) {
|
|
/*
|
|
* We assume that some other process had the source or
|
|
* destination file open at the wrong moment and retry.
|
|
* In order to give the other process a higher chance to
|
|
* complete its operation, we give up our time slice now.
|
|
* If we have to retry again, we do sleep a bit.
|
|
*/
|
|
Sleep(delay[tries]);
|
|
tries++;
|
|
goto repeat;
|
|
}
|
|
if (gle == ERROR_ACCESS_DENIED &&
|
|
ask_yes_no_if_possible("Rename from '%s' to '%s' failed. "
|
|
"Should I try again?", pold, pnew))
|
|
goto repeat;
|
|
|
|
errno = EACCES;
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Note that this doesn't return the actual pagesize, but
|
|
* the allocation granularity. If future Windows specific git code
|
|
* needs the real getpagesize function, we need to find another solution.
|
|
*/
|
|
int mingw_getpagesize(void)
|
|
{
|
|
SYSTEM_INFO si;
|
|
GetSystemInfo(&si);
|
|
return si.dwAllocationGranularity;
|
|
}
|
|
|
|
struct passwd *getpwuid(int uid)
|
|
{
|
|
static char user_name[100];
|
|
static struct passwd p;
|
|
|
|
DWORD len = sizeof(user_name);
|
|
if (!GetUserName(user_name, &len))
|
|
return NULL;
|
|
p.pw_name = user_name;
|
|
p.pw_gecos = "unknown";
|
|
p.pw_dir = NULL;
|
|
return &p;
|
|
}
|
|
|
|
static HANDLE timer_event;
|
|
static HANDLE timer_thread;
|
|
static int timer_interval;
|
|
static int one_shot;
|
|
static sig_handler_t timer_fn = SIG_DFL, sigint_fn = SIG_DFL;
|
|
|
|
/* The timer works like this:
|
|
* The thread, ticktack(), is a trivial routine that most of the time
|
|
* only waits to receive the signal to terminate. The main thread tells
|
|
* the thread to terminate by setting the timer_event to the signalled
|
|
* state.
|
|
* But ticktack() interrupts the wait state after the timer's interval
|
|
* length to call the signal handler.
|
|
*/
|
|
|
|
static unsigned __stdcall ticktack(void *dummy)
|
|
{
|
|
while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
|
|
mingw_raise(SIGALRM);
|
|
if (one_shot)
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int start_timer_thread(void)
|
|
{
|
|
timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
|
|
if (timer_event) {
|
|
timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
|
|
if (!timer_thread )
|
|
return errno = ENOMEM,
|
|
error("cannot start timer thread");
|
|
} else
|
|
return errno = ENOMEM,
|
|
error("cannot allocate resources for timer");
|
|
return 0;
|
|
}
|
|
|
|
static void stop_timer_thread(void)
|
|
{
|
|
if (timer_event)
|
|
SetEvent(timer_event); /* tell thread to terminate */
|
|
if (timer_thread) {
|
|
int rc = WaitForSingleObject(timer_thread, 1000);
|
|
if (rc == WAIT_TIMEOUT)
|
|
error("timer thread did not terminate timely");
|
|
else if (rc != WAIT_OBJECT_0)
|
|
error("waiting for timer thread failed: %lu",
|
|
GetLastError());
|
|
CloseHandle(timer_thread);
|
|
}
|
|
if (timer_event)
|
|
CloseHandle(timer_event);
|
|
timer_event = NULL;
|
|
timer_thread = NULL;
|
|
}
|
|
|
|
static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
|
|
{
|
|
return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
|
|
}
|
|
|
|
int setitimer(int type, struct itimerval *in, struct itimerval *out)
|
|
{
|
|
static const struct timeval zero;
|
|
static int atexit_done;
|
|
|
|
if (out != NULL)
|
|
return errno = EINVAL,
|
|
error("setitimer param 3 != NULL not implemented");
|
|
if (!is_timeval_eq(&in->it_interval, &zero) &&
|
|
!is_timeval_eq(&in->it_interval, &in->it_value))
|
|
return errno = EINVAL,
|
|
error("setitimer: it_interval must be zero or eq it_value");
|
|
|
|
if (timer_thread)
|
|
stop_timer_thread();
|
|
|
|
if (is_timeval_eq(&in->it_value, &zero) &&
|
|
is_timeval_eq(&in->it_interval, &zero))
|
|
return 0;
|
|
|
|
timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
|
|
one_shot = is_timeval_eq(&in->it_interval, &zero);
|
|
if (!atexit_done) {
|
|
atexit(stop_timer_thread);
|
|
atexit_done = 1;
|
|
}
|
|
return start_timer_thread();
|
|
}
|
|
|
|
int sigaction(int sig, struct sigaction *in, struct sigaction *out)
|
|
{
|
|
if (sig != SIGALRM)
|
|
return errno = EINVAL,
|
|
error("sigaction only implemented for SIGALRM");
|
|
if (out != NULL)
|
|
return errno = EINVAL,
|
|
error("sigaction: param 3 != NULL not implemented");
|
|
|
|
timer_fn = in->sa_handler;
|
|
return 0;
|
|
}
|
|
|
|
#undef signal
|
|
sig_handler_t mingw_signal(int sig, sig_handler_t handler)
|
|
{
|
|
sig_handler_t old;
|
|
|
|
switch (sig) {
|
|
case SIGALRM:
|
|
old = timer_fn;
|
|
timer_fn = handler;
|
|
break;
|
|
|
|
case SIGINT:
|
|
old = sigint_fn;
|
|
sigint_fn = handler;
|
|
break;
|
|
|
|
default:
|
|
return signal(sig, handler);
|
|
}
|
|
|
|
return old;
|
|
}
|
|
|
|
#undef raise
|
|
int mingw_raise(int sig)
|
|
{
|
|
switch (sig) {
|
|
case SIGALRM:
|
|
if (timer_fn == SIG_DFL) {
|
|
if (isatty(STDERR_FILENO))
|
|
fputs("Alarm clock\n", stderr);
|
|
exit(128 + SIGALRM);
|
|
} else if (timer_fn != SIG_IGN)
|
|
timer_fn(SIGALRM);
|
|
return 0;
|
|
|
|
case SIGINT:
|
|
if (sigint_fn == SIG_DFL)
|
|
exit(128 + SIGINT);
|
|
else if (sigint_fn != SIG_IGN)
|
|
sigint_fn(SIGINT);
|
|
return 0;
|
|
|
|
default:
|
|
return raise(sig);
|
|
}
|
|
}
|
|
|
|
int link(const char *oldpath, const char *newpath)
|
|
{
|
|
typedef BOOL (WINAPI *T)(LPCWSTR, LPCWSTR, LPSECURITY_ATTRIBUTES);
|
|
static T create_hard_link = NULL;
|
|
wchar_t woldpath[MAX_PATH], wnewpath[MAX_PATH];
|
|
if (xutftowcs_path(woldpath, oldpath) < 0 ||
|
|
xutftowcs_path(wnewpath, newpath) < 0)
|
|
return -1;
|
|
|
|
if (!create_hard_link) {
|
|
create_hard_link = (T) GetProcAddress(
|
|
GetModuleHandle("kernel32.dll"), "CreateHardLinkW");
|
|
if (!create_hard_link)
|
|
create_hard_link = (T)-1;
|
|
}
|
|
if (create_hard_link == (T)-1) {
|
|
errno = ENOSYS;
|
|
return -1;
|
|
}
|
|
if (!create_hard_link(wnewpath, woldpath, NULL)) {
|
|
errno = err_win_to_posix(GetLastError());
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
pid_t waitpid(pid_t pid, int *status, int options)
|
|
{
|
|
HANDLE h = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION,
|
|
FALSE, pid);
|
|
if (!h) {
|
|
errno = ECHILD;
|
|
return -1;
|
|
}
|
|
|
|
if (pid > 0 && options & WNOHANG) {
|
|
if (WAIT_OBJECT_0 != WaitForSingleObject(h, 0)) {
|
|
CloseHandle(h);
|
|
return 0;
|
|
}
|
|
options &= ~WNOHANG;
|
|
}
|
|
|
|
if (options == 0) {
|
|
struct pinfo_t **ppinfo;
|
|
if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) {
|
|
CloseHandle(h);
|
|
return 0;
|
|
}
|
|
|
|
if (status)
|
|
GetExitCodeProcess(h, (LPDWORD)status);
|
|
|
|
EnterCriticalSection(&pinfo_cs);
|
|
|
|
ppinfo = &pinfo;
|
|
while (*ppinfo) {
|
|
struct pinfo_t *info = *ppinfo;
|
|
if (info->pid == pid) {
|
|
CloseHandle(info->proc);
|
|
*ppinfo = info->next;
|
|
free(info);
|
|
break;
|
|
}
|
|
ppinfo = &info->next;
|
|
}
|
|
|
|
LeaveCriticalSection(&pinfo_cs);
|
|
|
|
CloseHandle(h);
|
|
return pid;
|
|
}
|
|
CloseHandle(h);
|
|
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
|
|
int mingw_skip_dos_drive_prefix(char **path)
|
|
{
|
|
int ret = has_dos_drive_prefix(*path);
|
|
*path += ret;
|
|
return ret;
|
|
}
|
|
|
|
int mingw_offset_1st_component(const char *path)
|
|
{
|
|
char *pos = (char *)path;
|
|
|
|
/* unc paths */
|
|
if (!skip_dos_drive_prefix(&pos) &&
|
|
is_dir_sep(pos[0]) && is_dir_sep(pos[1])) {
|
|
/* skip server name */
|
|
pos = strpbrk(pos + 2, "\\/");
|
|
if (!pos)
|
|
return 0; /* Error: malformed unc path */
|
|
|
|
do {
|
|
pos++;
|
|
} while (*pos && !is_dir_sep(*pos));
|
|
}
|
|
|
|
return pos + is_dir_sep(*pos) - path;
|
|
}
|
|
|
|
int xutftowcsn(wchar_t *wcs, const char *utfs, size_t wcslen, int utflen)
|
|
{
|
|
int upos = 0, wpos = 0;
|
|
const unsigned char *utf = (const unsigned char*) utfs;
|
|
if (!utf || !wcs || wcslen < 1) {
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
/* reserve space for \0 */
|
|
wcslen--;
|
|
if (utflen < 0)
|
|
utflen = INT_MAX;
|
|
|
|
while (upos < utflen) {
|
|
int c = utf[upos++] & 0xff;
|
|
if (utflen == INT_MAX && c == 0)
|
|
break;
|
|
|
|
if (wpos >= wcslen) {
|
|
wcs[wpos] = 0;
|
|
errno = ERANGE;
|
|
return -1;
|
|
}
|
|
|
|
if (c < 0x80) {
|
|
/* ASCII */
|
|
wcs[wpos++] = c;
|
|
} else if (c >= 0xc2 && c < 0xe0 && upos < utflen &&
|
|
(utf[upos] & 0xc0) == 0x80) {
|
|
/* 2-byte utf-8 */
|
|
c = ((c & 0x1f) << 6);
|
|
c |= (utf[upos++] & 0x3f);
|
|
wcs[wpos++] = c;
|
|
} else if (c >= 0xe0 && c < 0xf0 && upos + 1 < utflen &&
|
|
!(c == 0xe0 && utf[upos] < 0xa0) && /* over-long encoding */
|
|
(utf[upos] & 0xc0) == 0x80 &&
|
|
(utf[upos + 1] & 0xc0) == 0x80) {
|
|
/* 3-byte utf-8 */
|
|
c = ((c & 0x0f) << 12);
|
|
c |= ((utf[upos++] & 0x3f) << 6);
|
|
c |= (utf[upos++] & 0x3f);
|
|
wcs[wpos++] = c;
|
|
} else if (c >= 0xf0 && c < 0xf5 && upos + 2 < utflen &&
|
|
wpos + 1 < wcslen &&
|
|
!(c == 0xf0 && utf[upos] < 0x90) && /* over-long encoding */
|
|
!(c == 0xf4 && utf[upos] >= 0x90) && /* > \u10ffff */
|
|
(utf[upos] & 0xc0) == 0x80 &&
|
|
(utf[upos + 1] & 0xc0) == 0x80 &&
|
|
(utf[upos + 2] & 0xc0) == 0x80) {
|
|
/* 4-byte utf-8: convert to \ud8xx \udcxx surrogate pair */
|
|
c = ((c & 0x07) << 18);
|
|
c |= ((utf[upos++] & 0x3f) << 12);
|
|
c |= ((utf[upos++] & 0x3f) << 6);
|
|
c |= (utf[upos++] & 0x3f);
|
|
c -= 0x10000;
|
|
wcs[wpos++] = 0xd800 | (c >> 10);
|
|
wcs[wpos++] = 0xdc00 | (c & 0x3ff);
|
|
} else if (c >= 0xa0) {
|
|
/* invalid utf-8 byte, printable unicode char: convert 1:1 */
|
|
wcs[wpos++] = c;
|
|
} else {
|
|
/* invalid utf-8 byte, non-printable unicode: convert to hex */
|
|
static const char *hex = "0123456789abcdef";
|
|
wcs[wpos++] = hex[c >> 4];
|
|
if (wpos < wcslen)
|
|
wcs[wpos++] = hex[c & 0x0f];
|
|
}
|
|
}
|
|
wcs[wpos] = 0;
|
|
return wpos;
|
|
}
|
|
|
|
int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen)
|
|
{
|
|
if (!wcs || !utf || utflen < 1) {
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
utflen = WideCharToMultiByte(CP_UTF8, 0, wcs, -1, utf, utflen, NULL, NULL);
|
|
if (utflen)
|
|
return utflen - 1;
|
|
errno = ERANGE;
|
|
return -1;
|
|
}
|
|
|
|
static void setup_windows_environment(void)
|
|
{
|
|
char *tmp = getenv("TMPDIR");
|
|
|
|
/* on Windows it is TMP and TEMP */
|
|
if (!tmp) {
|
|
if (!(tmp = getenv("TMP")))
|
|
tmp = getenv("TEMP");
|
|
if (tmp) {
|
|
setenv("TMPDIR", tmp, 1);
|
|
tmp = getenv("TMPDIR");
|
|
}
|
|
}
|
|
|
|
if (tmp) {
|
|
/*
|
|
* Convert all dir separators to forward slashes,
|
|
* to help shell commands called from the Git
|
|
* executable (by not mistaking the dir separators
|
|
* for escape characters).
|
|
*/
|
|
convert_slashes(tmp);
|
|
}
|
|
|
|
/* simulate TERM to enable auto-color (see color.c) */
|
|
if (!getenv("TERM"))
|
|
setenv("TERM", "cygwin", 1);
|
|
}
|
|
|
|
/*
|
|
* Disable MSVCRT command line wildcard expansion (__getmainargs called from
|
|
* mingw startup code, see init.c in mingw runtime).
|
|
*/
|
|
int _CRT_glob = 0;
|
|
|
|
typedef struct {
|
|
int newmode;
|
|
} _startupinfo;
|
|
|
|
extern int __wgetmainargs(int *argc, wchar_t ***argv, wchar_t ***env, int glob,
|
|
_startupinfo *si);
|
|
|
|
static NORETURN void die_startup(void)
|
|
{
|
|
fputs("fatal: not enough memory for initialization", stderr);
|
|
exit(128);
|
|
}
|
|
|
|
static void *malloc_startup(size_t size)
|
|
{
|
|
void *result = malloc(size);
|
|
if (!result)
|
|
die_startup();
|
|
return result;
|
|
}
|
|
|
|
static char *wcstoutfdup_startup(char *buffer, const wchar_t *wcs, size_t len)
|
|
{
|
|
len = xwcstoutf(buffer, wcs, len) + 1;
|
|
return memcpy(malloc_startup(len), buffer, len);
|
|
}
|
|
|
|
static void maybe_redirect_std_handle(const wchar_t *key, DWORD std_id, int fd,
|
|
DWORD desired_access, DWORD flags)
|
|
{
|
|
DWORD create_flag = fd ? OPEN_ALWAYS : OPEN_EXISTING;
|
|
wchar_t buf[MAX_PATH];
|
|
DWORD max = ARRAY_SIZE(buf);
|
|
HANDLE handle;
|
|
DWORD ret = GetEnvironmentVariableW(key, buf, max);
|
|
|
|
if (!ret || ret >= max)
|
|
return;
|
|
|
|
/* make sure this does not leak into child processes */
|
|
SetEnvironmentVariableW(key, NULL);
|
|
if (!wcscmp(buf, L"off")) {
|
|
close(fd);
|
|
handle = GetStdHandle(std_id);
|
|
if (handle != INVALID_HANDLE_VALUE)
|
|
CloseHandle(handle);
|
|
return;
|
|
}
|
|
if (std_id == STD_ERROR_HANDLE && !wcscmp(buf, L"2>&1")) {
|
|
handle = GetStdHandle(STD_OUTPUT_HANDLE);
|
|
if (handle == INVALID_HANDLE_VALUE) {
|
|
close(fd);
|
|
handle = GetStdHandle(std_id);
|
|
if (handle != INVALID_HANDLE_VALUE)
|
|
CloseHandle(handle);
|
|
} else {
|
|
int new_fd = _open_osfhandle((intptr_t)handle, O_BINARY);
|
|
SetStdHandle(std_id, handle);
|
|
dup2(new_fd, fd);
|
|
/* do *not* close the new_fd: that would close stdout */
|
|
}
|
|
return;
|
|
}
|
|
handle = CreateFileW(buf, desired_access, 0, NULL, create_flag,
|
|
flags, NULL);
|
|
if (handle != INVALID_HANDLE_VALUE) {
|
|
int new_fd = _open_osfhandle((intptr_t)handle, O_BINARY);
|
|
SetStdHandle(std_id, handle);
|
|
dup2(new_fd, fd);
|
|
close(new_fd);
|
|
}
|
|
}
|
|
|
|
static void maybe_redirect_std_handles(void)
|
|
{
|
|
maybe_redirect_std_handle(L"GIT_REDIRECT_STDIN", STD_INPUT_HANDLE, 0,
|
|
GENERIC_READ, FILE_ATTRIBUTE_NORMAL);
|
|
maybe_redirect_std_handle(L"GIT_REDIRECT_STDOUT", STD_OUTPUT_HANDLE, 1,
|
|
GENERIC_WRITE, FILE_ATTRIBUTE_NORMAL);
|
|
maybe_redirect_std_handle(L"GIT_REDIRECT_STDERR", STD_ERROR_HANDLE, 2,
|
|
GENERIC_WRITE, FILE_FLAG_NO_BUFFERING);
|
|
}
|
|
|
|
void mingw_startup(void)
|
|
{
|
|
int i, maxlen, argc;
|
|
char *buffer;
|
|
wchar_t **wenv, **wargv;
|
|
_startupinfo si;
|
|
|
|
maybe_redirect_std_handles();
|
|
|
|
/* get wide char arguments and environment */
|
|
si.newmode = 0;
|
|
if (__wgetmainargs(&argc, &wargv, &wenv, _CRT_glob, &si) < 0)
|
|
die_startup();
|
|
|
|
/* determine size of argv and environ conversion buffer */
|
|
maxlen = wcslen(wargv[0]);
|
|
for (i = 1; i < argc; i++)
|
|
maxlen = max(maxlen, wcslen(wargv[i]));
|
|
for (i = 0; wenv[i]; i++)
|
|
maxlen = max(maxlen, wcslen(wenv[i]));
|
|
|
|
/*
|
|
* nedmalloc can't free CRT memory, allocate resizable environment
|
|
* list. Note that xmalloc / xmemdupz etc. call getenv, so we cannot
|
|
* use it while initializing the environment itself.
|
|
*/
|
|
environ_size = i + 1;
|
|
environ_alloc = alloc_nr(environ_size * sizeof(char*));
|
|
environ = malloc_startup(environ_alloc);
|
|
|
|
/* allocate buffer (wchar_t encodes to max 3 UTF-8 bytes) */
|
|
maxlen = 3 * maxlen + 1;
|
|
buffer = malloc_startup(maxlen);
|
|
|
|
/* convert command line arguments and environment to UTF-8 */
|
|
for (i = 0; i < argc; i++)
|
|
__argv[i] = wcstoutfdup_startup(buffer, wargv[i], maxlen);
|
|
for (i = 0; wenv[i]; i++)
|
|
environ[i] = wcstoutfdup_startup(buffer, wenv[i], maxlen);
|
|
environ[i] = NULL;
|
|
free(buffer);
|
|
|
|
/* sort environment for O(log n) getenv / putenv */
|
|
qsort(environ, i, sizeof(char*), compareenv);
|
|
|
|
/* fix Windows specific environment settings */
|
|
setup_windows_environment();
|
|
|
|
/* initialize critical section for waitpid pinfo_t list */
|
|
InitializeCriticalSection(&pinfo_cs);
|
|
|
|
/* set up default file mode and file modes for stdin/out/err */
|
|
_fmode = _O_BINARY;
|
|
_setmode(_fileno(stdin), _O_BINARY);
|
|
_setmode(_fileno(stdout), _O_BINARY);
|
|
_setmode(_fileno(stderr), _O_BINARY);
|
|
|
|
/* initialize Unicode console */
|
|
winansi_init();
|
|
}
|
|
|
|
int uname(struct utsname *buf)
|
|
{
|
|
unsigned v = (unsigned)GetVersion();
|
|
memset(buf, 0, sizeof(*buf));
|
|
xsnprintf(buf->sysname, sizeof(buf->sysname), "Windows");
|
|
xsnprintf(buf->release, sizeof(buf->release),
|
|
"%u.%u", v & 0xff, (v >> 8) & 0xff);
|
|
/* assuming NT variants only.. */
|
|
xsnprintf(buf->version, sizeof(buf->version),
|
|
"%u", (v >> 16) & 0x7fff);
|
|
return 0;
|
|
}
|