ab1a11be78
On Windows, EACCES overrules ENOTEMPTY when calling rmdir(). But if the directory is busy, we only want to retry deleting the directory if it is empty, so test specifically for that case and set ENOTEMPTY rather than EACCES. Noticed by Greg Hazel. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1735 lines
43 KiB
C
1735 lines
43 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 "../strbuf.h"
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#include "../run-command.h"
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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] = 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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#undef unlink
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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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/* read-only files cannot be removed */
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chmod(pathname, 0666);
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while ((ret = unlink(pathname)) == -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 = unlink(pathname);
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return ret;
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}
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static int is_dir_empty(const char *path)
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{
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struct strbuf buf = STRBUF_INIT;
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WIN32_FIND_DATAA findbuf;
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HANDLE handle;
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strbuf_addf(&buf, "%s\\*", path);
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handle = FindFirstFileA(buf.buf, &findbuf);
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if (handle == INVALID_HANDLE_VALUE) {
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strbuf_release(&buf);
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return GetLastError() == ERROR_NO_MORE_FILES;
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}
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while (!strcmp(findbuf.cFileName, ".") ||
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!strcmp(findbuf.cFileName, ".."))
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if (!FindNextFile(handle, &findbuf)) {
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strbuf_release(&buf);
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return GetLastError() == ERROR_NO_MORE_FILES;
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}
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FindClose(handle);
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strbuf_release(&buf);
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return 0;
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}
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#undef rmdir
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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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while ((ret = rmdir(pathname)) == -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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if (!is_dir_empty(pathname)) {
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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 && 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 = rmdir(pathname);
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return ret;
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}
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#undef open
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int mingw_open (const char *filename, int oflags, ...)
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{
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va_list args;
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unsigned mode;
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int fd;
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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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fd = open(filename, oflags, mode);
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if (fd < 0 && (oflags & O_CREAT) && errno == EACCES) {
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DWORD attrs = GetFileAttributes(filename);
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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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return fd;
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}
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#undef write
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ssize_t mingw_write(int fd, const void *buf, size_t count)
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{
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/*
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* While write() calls to a file on a local disk are translated
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* into WriteFile() calls with a maximum size of 64KB on Windows
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* XP and 256KB on Vista, no such cap is placed on writes to
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* files over the network on Windows XP. Unfortunately, there
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* seems to be a limit of 32MB-28KB on X64 and 64MB-32KB on x86;
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* bigger writes fail on Windows XP.
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* So we cap to a nice 31MB here to avoid write failures over
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* the net without changing the number of WriteFile() calls in
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* the local case.
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*/
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return write(fd, buf, min(count, 31 * 1024 * 1024));
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}
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#undef fopen
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FILE *mingw_fopen (const char *filename, const char *otype)
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{
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if (filename && !strcmp(filename, "/dev/null"))
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filename = "nul";
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return fopen(filename, otype);
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}
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#undef freopen
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FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream)
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{
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if (filename && !strcmp(filename, "/dev/null"))
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filename = "nul";
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return freopen(filename, otype, stream);
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}
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/*
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* The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
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* Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
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*/
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static inline long long filetime_to_hnsec(const FILETIME *ft)
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{
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long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
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/* Windows to Unix Epoch conversion */
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return winTime - 116444736000000000LL;
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}
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static inline time_t filetime_to_time_t(const FILETIME *ft)
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{
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return (time_t)(filetime_to_hnsec(ft) / 10000000);
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}
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/* We keep the do_lstat code in a separate function to avoid recursion.
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* When a path ends with a slash, the stat will fail with ENOENT. In
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* this case, we strip the trailing slashes and stat again.
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*
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* If follow is true then act like stat() and report on the link
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* target. Otherwise report on the link itself.
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*/
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static int do_lstat(int follow, const char *file_name, struct stat *buf)
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{
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int err;
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WIN32_FILE_ATTRIBUTE_DATA fdata;
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if (!(err = get_file_attr(file_name, &fdata))) {
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buf->st_ino = 0;
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buf->st_gid = 0;
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buf->st_uid = 0;
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buf->st_nlink = 1;
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buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
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buf->st_size = fdata.nFileSizeLow |
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(((off_t)fdata.nFileSizeHigh)<<32);
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buf->st_dev = buf->st_rdev = 0; /* not used by Git */
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buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
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buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
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buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
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if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
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WIN32_FIND_DATAA findbuf;
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HANDLE handle = FindFirstFileA(file_name, &findbuf);
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if (handle != INVALID_HANDLE_VALUE) {
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if ((findbuf.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
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(findbuf.dwReserved0 == IO_REPARSE_TAG_SYMLINK)) {
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if (follow) {
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char buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
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buf->st_size = readlink(file_name, buffer, MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
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} else {
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buf->st_mode = S_IFLNK;
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}
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buf->st_mode |= S_IREAD;
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if (!(findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
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buf->st_mode |= S_IWRITE;
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}
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FindClose(handle);
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}
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}
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return 0;
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}
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errno = err;
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return -1;
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}
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|
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/* We provide our own lstat/fstat functions, since the provided
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* lstat/fstat functions are so slow. These stat functions are
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* tailored for Git's usage (read: fast), and are not meant to be
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* complete. Note that Git stat()s are redirected to mingw_lstat()
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* too, since Windows doesn't really handle symlinks that well.
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*/
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static int do_stat_internal(int follow, const char *file_name, struct stat *buf)
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{
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int namelen;
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static char alt_name[PATH_MAX];
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if (!do_lstat(follow, file_name, buf))
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return 0;
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/* if file_name ended in a '/', Windows returned ENOENT;
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* try again without trailing slashes
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*/
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if (errno != ENOENT)
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return -1;
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namelen = strlen(file_name);
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if (namelen && file_name[namelen-1] != '/')
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return -1;
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while (namelen && file_name[namelen-1] == '/')
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--namelen;
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if (!namelen || namelen >= PATH_MAX)
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return -1;
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memcpy(alt_name, file_name, namelen);
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alt_name[namelen] = 0;
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return do_lstat(follow, alt_name, buf);
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}
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int mingw_lstat(const char *file_name, struct stat *buf)
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{
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return do_stat_internal(0, file_name, buf);
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}
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int mingw_stat(const char *file_name, struct stat *buf)
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{
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return do_stat_internal(1, file_name, buf);
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}
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#undef fstat
|
|
int mingw_fstat(int fd, struct stat *buf)
|
|
{
|
|
HANDLE fh = (HANDLE)_get_osfhandle(fd);
|
|
BY_HANDLE_FILE_INFORMATION fdata;
|
|
|
|
if (fh == INVALID_HANDLE_VALUE) {
|
|
errno = EBADF;
|
|
return -1;
|
|
}
|
|
/* direct non-file handles to MS's fstat() */
|
|
if (GetFileType(fh) != FILE_TYPE_DISK)
|
|
return _fstati64(fd, buf);
|
|
|
|
if (GetFileInformationByHandle(fh, &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 */
|
|
buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
|
|
buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
|
|
buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
|
|
return 0;
|
|
}
|
|
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;
|
|
|
|
/* must have write permission */
|
|
DWORD attrs = GetFileAttributes(file_name);
|
|
if (attrs != INVALID_FILE_ATTRIBUTES &&
|
|
(attrs & FILE_ATTRIBUTE_READONLY)) {
|
|
/* ignore errors here; open() will report them */
|
|
SetFileAttributes(file_name, attrs & ~FILE_ATTRIBUTE_READONLY);
|
|
}
|
|
|
|
if ((fh = open(file_name, 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 */
|
|
SetFileAttributes(file_name, attrs);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
unsigned int sleep (unsigned int seconds)
|
|
{
|
|
Sleep(seconds*1000);
|
|
return 0;
|
|
}
|
|
|
|
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((int)h[0], O_NOINHERIT);
|
|
if (filedes[0] < 0) {
|
|
CloseHandle(h[0]);
|
|
CloseHandle(h[1]);
|
|
return -1;
|
|
}
|
|
filedes[1] = _open_osfhandle((int)h[1], O_NOINHERIT);
|
|
if (filedes[0] < 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;
|
|
}
|
|
|
|
#undef getcwd
|
|
char *mingw_getcwd(char *pointer, int len)
|
|
{
|
|
int i;
|
|
char *ret = getcwd(pointer, len);
|
|
if (!ret)
|
|
return ret;
|
|
for (i = 0; pointer[i]; i++)
|
|
if (pointer[i] == '\\')
|
|
pointer[i] = '/';
|
|
return ret;
|
|
}
|
|
|
|
#undef getenv
|
|
char *mingw_getenv(const char *name)
|
|
{
|
|
char *result = getenv(name);
|
|
if (!result && !strcmp(name, "TMPDIR")) {
|
|
/* on Windows it is TMP and TEMP */
|
|
result = getenv("TMP");
|
|
if (!result)
|
|
result = getenv("TEMP");
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* 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(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;
|
|
}
|
|
|
|
/*
|
|
* Splits the PATH into parts.
|
|
*/
|
|
static char **get_path_split(void)
|
|
{
|
|
char *p, **path, *envpath = getenv("PATH");
|
|
int i, n = 0;
|
|
|
|
if (!envpath || !*envpath)
|
|
return NULL;
|
|
|
|
envpath = xstrdup(envpath);
|
|
p = envpath;
|
|
while (p) {
|
|
char *dir = p;
|
|
p = strchr(p, ';');
|
|
if (p) *p++ = '\0';
|
|
if (*dir) { /* not earlier, catches series of ; */
|
|
++n;
|
|
}
|
|
}
|
|
if (!n)
|
|
return NULL;
|
|
|
|
path = xmalloc((n+1)*sizeof(char *));
|
|
p = envpath;
|
|
i = 0;
|
|
do {
|
|
if (*p)
|
|
path[i++] = xstrdup(p);
|
|
p = p+strlen(p)+1;
|
|
} while (i < n);
|
|
path[i] = NULL;
|
|
|
|
free(envpath);
|
|
|
|
return path;
|
|
}
|
|
|
|
static void free_path_split(char **path)
|
|
{
|
|
char **p = path;
|
|
|
|
if (!path)
|
|
return;
|
|
|
|
while (*p)
|
|
free(*p++);
|
|
free(path);
|
|
}
|
|
|
|
/*
|
|
* 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, const char *cmd, int isexe, int exe_only)
|
|
{
|
|
char path[MAX_PATH];
|
|
snprintf(path, sizeof(path), "%s/%s.exe", 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, char **path, int exe_only)
|
|
{
|
|
char *prog = NULL;
|
|
int len = strlen(cmd);
|
|
int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
|
|
|
|
if (strchr(cmd, '/') || strchr(cmd, '\\'))
|
|
prog = xstrdup(cmd);
|
|
|
|
while (!prog && *path)
|
|
prog = lookup_prog(*path++, cmd, isexe, exe_only);
|
|
|
|
return prog;
|
|
}
|
|
|
|
static int env_compare(const void *a, const void *b)
|
|
{
|
|
char *const *ea = a;
|
|
char *const *eb = b;
|
|
return strcasecmp(*ea, *eb);
|
|
}
|
|
|
|
struct pinfo_t {
|
|
struct pinfo_t *next;
|
|
pid_t pid;
|
|
HANDLE proc;
|
|
} pinfo_t;
|
|
struct pinfo_t *pinfo = NULL;
|
|
CRITICAL_SECTION pinfo_cs;
|
|
|
|
static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **env,
|
|
const char *dir,
|
|
int prepend_cmd, int fhin, int fhout, int fherr)
|
|
{
|
|
STARTUPINFO si;
|
|
PROCESS_INFORMATION pi;
|
|
struct strbuf envblk, args;
|
|
unsigned flags;
|
|
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!
|
|
*/
|
|
flags = 0;
|
|
CloseHandle(cons);
|
|
}
|
|
memset(&si, 0, sizeof(si));
|
|
si.cb = sizeof(si);
|
|
si.dwFlags = STARTF_USESTDHANDLES;
|
|
si.hStdInput = (HANDLE) _get_osfhandle(fhin);
|
|
si.hStdOutput = (HANDLE) _get_osfhandle(fhout);
|
|
si.hStdError = (HANDLE) _get_osfhandle(fherr);
|
|
|
|
/* 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);
|
|
}
|
|
|
|
if (env) {
|
|
int count = 0;
|
|
char **e, **sorted_env;
|
|
|
|
for (e = env; *e; e++)
|
|
count++;
|
|
|
|
/* environment must be sorted */
|
|
sorted_env = xmalloc(sizeof(*sorted_env) * (count + 1));
|
|
memcpy(sorted_env, env, sizeof(*sorted_env) * (count + 1));
|
|
qsort(sorted_env, count, sizeof(*sorted_env), env_compare);
|
|
|
|
strbuf_init(&envblk, 0);
|
|
for (e = sorted_env; *e; e++) {
|
|
strbuf_addstr(&envblk, *e);
|
|
strbuf_addch(&envblk, '\0');
|
|
}
|
|
free(sorted_env);
|
|
}
|
|
|
|
memset(&pi, 0, sizeof(pi));
|
|
ret = CreateProcess(cmd, args.buf, NULL, NULL, TRUE, flags,
|
|
env ? envblk.buf : NULL, dir, &si, &pi);
|
|
|
|
if (env)
|
|
strbuf_release(&envblk);
|
|
strbuf_release(&args);
|
|
|
|
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_spawnve(const char *cmd, const char **argv, char **env,
|
|
int prepend_cmd)
|
|
{
|
|
return mingw_spawnve_fd(cmd, argv, env, NULL, prepend_cmd, 0, 1, 2);
|
|
}
|
|
|
|
pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
|
|
const char *dir,
|
|
int fhin, int fhout, int fherr)
|
|
{
|
|
pid_t pid;
|
|
char **path = get_path_split();
|
|
char *prog = path_lookup(cmd, path, 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, path, 1);
|
|
argv[0] = prog;
|
|
if (!iprog) {
|
|
errno = ENOENT;
|
|
pid = -1;
|
|
}
|
|
else {
|
|
pid = mingw_spawnve_fd(iprog, argv, env, dir, 1,
|
|
fhin, fhout, fherr);
|
|
free(iprog);
|
|
}
|
|
argv[0] = argv0;
|
|
}
|
|
else
|
|
pid = mingw_spawnve_fd(prog, argv, env, dir, 0,
|
|
fhin, fhout, fherr);
|
|
free(prog);
|
|
}
|
|
free_path_split(path);
|
|
return pid;
|
|
}
|
|
|
|
static int try_shell_exec(const char *cmd, char *const *argv, char **env)
|
|
{
|
|
const char *interpr = parse_interpreter(cmd);
|
|
char **path;
|
|
char *prog;
|
|
int pid = 0;
|
|
|
|
if (!interpr)
|
|
return 0;
|
|
path = get_path_split();
|
|
prog = path_lookup(interpr, path, 1);
|
|
if (prog) {
|
|
int argc = 0;
|
|
const char **argv2;
|
|
while (argv[argc]) argc++;
|
|
argv2 = xmalloc(sizeof(*argv) * (argc+1));
|
|
argv2[0] = (char *)cmd; /* full path to the script file */
|
|
memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
|
|
pid = mingw_spawnve(prog, argv2, env, 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);
|
|
}
|
|
free_path_split(path);
|
|
return pid;
|
|
}
|
|
|
|
static void mingw_execve(const char *cmd, char *const *argv, char *const *env)
|
|
{
|
|
/* check if git_command is a shell script */
|
|
if (!try_shell_exec(cmd, argv, (char **)env)) {
|
|
int pid, status;
|
|
|
|
pid = mingw_spawnve(cmd, (const char **)argv, (char **)env, 0);
|
|
if (pid < 0)
|
|
return;
|
|
if (waitpid(pid, &status, 0) < 0)
|
|
status = 255;
|
|
exit(status);
|
|
}
|
|
}
|
|
|
|
void mingw_execvp(const char *cmd, char *const *argv)
|
|
{
|
|
char **path = get_path_split();
|
|
char *prog = path_lookup(cmd, path, 0);
|
|
|
|
if (prog) {
|
|
mingw_execve(prog, argv, environ);
|
|
free(prog);
|
|
} else
|
|
errno = ENOENT;
|
|
|
|
free_path_split(path);
|
|
}
|
|
|
|
void mingw_execv(const char *cmd, char *const *argv)
|
|
{
|
|
mingw_execve(cmd, argv, environ);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
|
|
static char **copy_environ(void)
|
|
{
|
|
char **env;
|
|
int i = 0;
|
|
while (environ[i])
|
|
i++;
|
|
env = xmalloc((i+1)*sizeof(*env));
|
|
for (i = 0; environ[i]; i++)
|
|
env[i] = xstrdup(environ[i]);
|
|
env[i] = NULL;
|
|
return env;
|
|
}
|
|
|
|
void free_environ(char **env)
|
|
{
|
|
int i;
|
|
for (i = 0; env[i]; i++)
|
|
free(env[i]);
|
|
free(env);
|
|
}
|
|
|
|
static int lookup_env(char **env, const char *name, size_t nmln)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; env[i]; i++) {
|
|
if (0 == strncmp(env[i], name, nmln)
|
|
&& '=' == env[i][nmln])
|
|
/* matches */
|
|
return i;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* If name contains '=', then sets the variable, otherwise it unsets it
|
|
*/
|
|
static char **env_setenv(char **env, const char *name)
|
|
{
|
|
char *eq = strchrnul(name, '=');
|
|
int i = lookup_env(env, name, eq-name);
|
|
|
|
if (i < 0) {
|
|
if (*eq) {
|
|
for (i = 0; env[i]; i++)
|
|
;
|
|
env = xrealloc(env, (i+2)*sizeof(*env));
|
|
env[i] = xstrdup(name);
|
|
env[i+1] = NULL;
|
|
}
|
|
}
|
|
else {
|
|
free(env[i]);
|
|
if (*eq)
|
|
env[i] = xstrdup(name);
|
|
else
|
|
for (; env[i]; i++)
|
|
env[i] = env[i+1];
|
|
}
|
|
return env;
|
|
}
|
|
|
|
/*
|
|
* Copies global environ and adjusts variables as specified by vars.
|
|
*/
|
|
char **make_augmented_environ(const char *const *vars)
|
|
{
|
|
char **env = copy_environ();
|
|
|
|
while (*vars)
|
|
env = env_setenv(env, *vars++);
|
|
return env;
|
|
}
|
|
|
|
/*
|
|
* Note, this isn't a complete replacement for getaddrinfo. It assumes
|
|
* that service contains a numerical port, or that it 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 ? strdup(h->h_name) : NULL;
|
|
else
|
|
ai->ai_canonname = NULL;
|
|
|
|
sin = xmalloc(ai->ai_addrlen);
|
|
memset(sin, 0, 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 = 0;
|
|
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 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 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;
|
|
|
|
/*
|
|
* Try native rename() first to get errno right.
|
|
* It is based on MoveFile(), which cannot overwrite existing files.
|
|
*/
|
|
if (!rename(pold, pnew))
|
|
return 0;
|
|
if (errno != EEXIST)
|
|
return -1;
|
|
repeat:
|
|
if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
|
|
return 0;
|
|
/* TODO: translate more errors */
|
|
gle = GetLastError();
|
|
if (gle == ERROR_ACCESS_DENIED &&
|
|
(attrs = GetFileAttributes(pnew)) != INVALID_FILE_ATTRIBUTES) {
|
|
if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
|
|
errno = EISDIR;
|
|
return -1;
|
|
}
|
|
if ((attrs & FILE_ATTRIBUTE_READONLY) &&
|
|
SetFileAttributes(pnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
|
|
if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
|
|
return 0;
|
|
gle = GetLastError();
|
|
/* revert file attributes on failure */
|
|
SetFileAttributes(pnew, 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;
|
|
|
|
/* 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) {
|
|
if (timer_fn == SIG_DFL)
|
|
die("Alarm");
|
|
if (timer_fn != SIG_IGN)
|
|
timer_fn(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 = timer_fn;
|
|
if (sig != SIGALRM)
|
|
return signal(sig, handler);
|
|
timer_fn = handler;
|
|
return old;
|
|
}
|
|
|
|
static const char *make_backslash_path(const char *path)
|
|
{
|
|
static char buf[PATH_MAX + 1];
|
|
char *c;
|
|
|
|
if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
|
|
die("Too long path: %.*s", 60, path);
|
|
|
|
for (c = buf; *c; c++) {
|
|
if (*c == '/')
|
|
*c = '\\';
|
|
}
|
|
return buf;
|
|
}
|
|
|
|
void mingw_open_html(const char *unixpath)
|
|
{
|
|
const char *htmlpath = make_backslash_path(unixpath);
|
|
typedef HINSTANCE (WINAPI *T)(HWND, const char *,
|
|
const char *, const char *, const char *, INT);
|
|
T ShellExecute;
|
|
HMODULE shell32;
|
|
int r;
|
|
|
|
shell32 = LoadLibrary("shell32.dll");
|
|
if (!shell32)
|
|
die("cannot load shell32.dll");
|
|
ShellExecute = (T)GetProcAddress(shell32, "ShellExecuteA");
|
|
if (!ShellExecute)
|
|
die("cannot run browser");
|
|
|
|
printf("Launching default browser to display HTML ...\n");
|
|
r = (int)ShellExecute(NULL, "open", htmlpath, NULL, "\\", SW_SHOWNORMAL);
|
|
FreeLibrary(shell32);
|
|
/* see the MSDN documentation referring to the result codes here */
|
|
if (r <= 32) {
|
|
die("failed to launch browser for %.*s", MAX_PATH, unixpath);
|
|
}
|
|
}
|
|
|
|
int link(const char *oldpath, const char *newpath)
|
|
{
|
|
typedef BOOL (WINAPI *T)(const char*, const char*, LPSECURITY_ATTRIBUTES);
|
|
static T create_hard_link = NULL;
|
|
if (!create_hard_link) {
|
|
create_hard_link = (T) GetProcAddress(
|
|
GetModuleHandle("kernel32.dll"), "CreateHardLinkA");
|
|
if (!create_hard_link)
|
|
create_hard_link = (T)-1;
|
|
}
|
|
if (create_hard_link == (T)-1) {
|
|
errno = ENOSYS;
|
|
return -1;
|
|
}
|
|
if (!create_hard_link(newpath, oldpath, NULL)) {
|
|
errno = err_win_to_posix(GetLastError());
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
char *getpass(const char *prompt)
|
|
{
|
|
struct strbuf buf = STRBUF_INIT;
|
|
|
|
fputs(prompt, stderr);
|
|
for (;;) {
|
|
char c = _getch();
|
|
if (c == '\r' || c == '\n')
|
|
break;
|
|
strbuf_addch(&buf, c);
|
|
}
|
|
fputs("\n", stderr);
|
|
return strbuf_detach(&buf, NULL);
|
|
}
|
|
|
|
pid_t waitpid(pid_t pid, int *status, unsigned 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;
|
|
}
|