mirror of
https://github.com/git/git
synced 2024-08-27 11:39:22 +00:00
1006 lines
23 KiB
C
1006 lines
23 KiB
C
#include "../git-compat-util.h"
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#include "win32.h"
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#include "../strbuf.h"
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unsigned int _CRT_fmode = _O_BINARY;
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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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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 (!strcmp(filename, "/dev/null"))
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filename = "nul";
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int 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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static inline time_t filetime_to_time_t(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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winTime -= 116444736000000000LL; /* Windows to Unix Epoch conversion */
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winTime /= 10000000; /* Nano to seconds resolution */
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return (time_t)winTime;
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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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static int do_lstat(const char *file_name, struct stat *buf)
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{
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WIN32_FILE_ATTRIBUTE_DATA fdata;
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if (!(errno = 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; /* Can't use nFileSizeHigh, since it's not a stat64 */
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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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return 0;
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}
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return -1;
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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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int mingw_lstat(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(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(alt_name, buf);
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}
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#undef fstat
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int mingw_fstat(int fd, struct stat *buf)
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{
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HANDLE fh = (HANDLE)_get_osfhandle(fd);
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BY_HANDLE_FILE_INFORMATION fdata;
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if (fh == INVALID_HANDLE_VALUE) {
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errno = EBADF;
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return -1;
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}
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/* direct non-file handles to MS's fstat() */
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if (GetFileType(fh) != FILE_TYPE_DISK)
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return fstat(fd, buf);
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if (GetFileInformationByHandle(fh, &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; /* Can't use nFileSizeHigh, since it's not a stat64 */
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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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return 0;
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}
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errno = EBADF;
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return -1;
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}
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static inline void time_t_to_filetime(time_t t, FILETIME *ft)
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{
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long long winTime = t * 10000000LL + 116444736000000000LL;
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ft->dwLowDateTime = winTime;
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ft->dwHighDateTime = winTime >> 32;
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}
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int mingw_utime (const char *file_name, const struct utimbuf *times)
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{
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FILETIME mft, aft;
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int fh, rc;
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/* must have write permission */
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if ((fh = open(file_name, O_RDWR | O_BINARY)) < 0)
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return -1;
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time_t_to_filetime(times->modtime, &mft);
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time_t_to_filetime(times->actime, &aft);
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if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
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errno = EINVAL;
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rc = -1;
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} else
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rc = 0;
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close(fh);
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return rc;
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}
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unsigned int sleep (unsigned int seconds)
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{
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Sleep(seconds*1000);
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return 0;
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}
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int mkstemp(char *template)
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{
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char *filename = mktemp(template);
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if (filename == NULL)
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return -1;
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return open(filename, O_RDWR | O_CREAT, 0600);
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}
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int gettimeofday(struct timeval *tv, void *tz)
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{
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SYSTEMTIME st;
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struct tm tm;
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GetSystemTime(&st);
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tm.tm_year = st.wYear-1900;
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tm.tm_mon = st.wMonth-1;
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tm.tm_mday = st.wDay;
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tm.tm_hour = st.wHour;
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tm.tm_min = st.wMinute;
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tm.tm_sec = st.wSecond;
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tv->tv_sec = tm_to_time_t(&tm);
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if (tv->tv_sec < 0)
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return -1;
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tv->tv_usec = st.wMilliseconds*1000;
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return 0;
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}
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int pipe(int filedes[2])
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{
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int fd;
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HANDLE h[2], parent;
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if (_pipe(filedes, 8192, 0) < 0)
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return -1;
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parent = GetCurrentProcess();
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if (!DuplicateHandle (parent, (HANDLE)_get_osfhandle(filedes[0]),
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parent, &h[0], 0, FALSE, DUPLICATE_SAME_ACCESS)) {
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close(filedes[0]);
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close(filedes[1]);
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return -1;
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}
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if (!DuplicateHandle (parent, (HANDLE)_get_osfhandle(filedes[1]),
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parent, &h[1], 0, FALSE, DUPLICATE_SAME_ACCESS)) {
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close(filedes[0]);
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close(filedes[1]);
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CloseHandle(h[0]);
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return -1;
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}
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fd = _open_osfhandle((int)h[0], O_NOINHERIT);
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if (fd < 0) {
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close(filedes[0]);
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close(filedes[1]);
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CloseHandle(h[0]);
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CloseHandle(h[1]);
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return -1;
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}
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close(filedes[0]);
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filedes[0] = fd;
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fd = _open_osfhandle((int)h[1], O_NOINHERIT);
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if (fd < 0) {
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close(filedes[0]);
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close(filedes[1]);
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CloseHandle(h[1]);
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return -1;
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}
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close(filedes[1]);
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filedes[1] = fd;
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return 0;
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}
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int poll(struct pollfd *ufds, unsigned int nfds, int timeout)
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{
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int i, pending;
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if (timeout >= 0) {
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if (nfds == 0) {
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Sleep(timeout);
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return 0;
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}
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return errno = EINVAL, error("poll timeout not supported");
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}
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/* When there is only one fd to wait for, then we pretend that
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* input is available and let the actual wait happen when the
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* caller invokes read().
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*/
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if (nfds == 1) {
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if (!(ufds[0].events & POLLIN))
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return errno = EINVAL, error("POLLIN not set");
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ufds[0].revents = POLLIN;
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return 0;
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}
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repeat:
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pending = 0;
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for (i = 0; i < nfds; i++) {
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DWORD avail = 0;
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HANDLE h = (HANDLE) _get_osfhandle(ufds[i].fd);
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if (h == INVALID_HANDLE_VALUE)
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return -1; /* errno was set */
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if (!(ufds[i].events & POLLIN))
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return errno = EINVAL, error("POLLIN not set");
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/* this emulation works only for pipes */
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if (!PeekNamedPipe(h, NULL, 0, NULL, &avail, NULL)) {
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int err = GetLastError();
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if (err == ERROR_BROKEN_PIPE) {
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ufds[i].revents = POLLHUP;
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pending++;
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} else {
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errno = EINVAL;
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return error("PeekNamedPipe failed,"
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" GetLastError: %u", err);
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}
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} else if (avail) {
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ufds[i].revents = POLLIN;
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pending++;
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} else
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ufds[i].revents = 0;
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}
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if (!pending) {
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/* The only times that we spin here is when the process
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* that is connected through the pipes is waiting for
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* its own input data to become available. But since
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* the process (pack-objects) is itself CPU intensive,
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* it will happily pick up the time slice that we are
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* relinguishing here.
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*/
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Sleep(0);
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goto repeat;
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}
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return 0;
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}
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struct tm *gmtime_r(const time_t *timep, struct tm *result)
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{
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/* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
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memcpy(result, gmtime(timep), sizeof(struct tm));
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return result;
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}
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struct tm *localtime_r(const time_t *timep, struct tm *result)
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{
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/* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
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memcpy(result, localtime(timep), sizeof(struct tm));
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return result;
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}
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#undef getcwd
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char *mingw_getcwd(char *pointer, int len)
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{
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int i;
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char *ret = getcwd(pointer, len);
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if (!ret)
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return ret;
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for (i = 0; pointer[i]; i++)
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if (pointer[i] == '\\')
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pointer[i] = '/';
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return ret;
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}
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#undef getenv
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char *mingw_getenv(const char *name)
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{
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char *result = getenv(name);
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if (!result && !strcmp(name, "TMPDIR")) {
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/* on Windows it is TMP and TEMP */
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result = getenv("TMP");
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if (!result)
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result = getenv("TEMP");
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}
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return result;
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}
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/*
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* See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx
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* (Parsing C++ Command-Line Arguments)
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*/
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static const char *quote_arg(const char *arg)
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{
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/* count chars to quote */
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int len = 0, n = 0;
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int force_quotes = 0;
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char *q, *d;
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const char *p = arg;
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if (!*p) force_quotes = 1;
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while (*p) {
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if (isspace(*p) || *p == '*' || *p == '?' || *p == '{')
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force_quotes = 1;
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else if (*p == '"')
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n++;
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else if (*p == '\\') {
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int count = 0;
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while (*p == '\\') {
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count++;
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p++;
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len++;
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}
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if (*p == '"')
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n += count*2 + 1;
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continue;
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}
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len++;
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p++;
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}
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if (!force_quotes && n == 0)
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return arg;
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/* insert \ where necessary */
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d = q = xmalloc(len+n+3);
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*d++ = '"';
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while (*arg) {
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if (*arg == '"')
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*d++ = '\\';
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else if (*arg == '\\') {
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int count = 0;
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while (*arg == '\\') {
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count++;
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*d++ = *arg++;
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}
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if (*arg == '"') {
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while (count-- > 0)
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*d++ = '\\';
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*d++ = '\\';
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}
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}
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*d++ = *arg++;
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}
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*d++ = '"';
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*d++ = 0;
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return q;
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}
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static const char *parse_interpreter(const char *cmd)
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{
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static char buf[100];
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char *p, *opt;
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int n, fd;
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/* don't even try a .exe */
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n = strlen(cmd);
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if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
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return NULL;
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fd = open(cmd, O_RDONLY);
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if (fd < 0)
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return NULL;
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n = read(fd, buf, sizeof(buf)-1);
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close(fd);
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if (n < 4) /* at least '#!/x' and not error */
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return NULL;
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if (buf[0] != '#' || buf[1] != '!')
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return NULL;
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buf[n] = '\0';
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p = strchr(buf, '\n');
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if (!p)
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return NULL;
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*p = '\0';
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if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
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return NULL;
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/* strip options */
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if ((opt = strchr(p+1, ' ')))
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*opt = '\0';
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return p+1;
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}
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/*
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* Splits the PATH into parts.
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*/
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static char **get_path_split(void)
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{
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char *p, **path, *envpath = getenv("PATH");
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int i, n = 0;
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if (!envpath || !*envpath)
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return NULL;
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envpath = xstrdup(envpath);
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p = envpath;
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while (p) {
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char *dir = p;
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p = strchr(p, ';');
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if (p) *p++ = '\0';
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if (*dir) { /* not earlier, catches series of ; */
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++n;
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}
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}
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if (!n)
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return NULL;
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path = xmalloc((n+1)*sizeof(char*));
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p = envpath;
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i = 0;
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do {
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if (*p)
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path[i++] = xstrdup(p);
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p = p+strlen(p)+1;
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} while (i < n);
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path[i] = NULL;
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free(envpath);
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return path;
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}
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static void free_path_split(char **path)
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{
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if (!path)
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return;
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char **p = path;
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while (*p)
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free(*p++);
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free(path);
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}
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/*
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* exe_only means that we only want to detect .exe files, but not scripts
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* (which do not have an extension)
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*/
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static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only)
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{
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char path[MAX_PATH];
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snprintf(path, sizeof(path), "%s/%s.exe", dir, cmd);
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if (!isexe && access(path, F_OK) == 0)
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return xstrdup(path);
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path[strlen(path)-4] = '\0';
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if ((!exe_only || isexe) && access(path, F_OK) == 0)
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if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY))
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return xstrdup(path);
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return NULL;
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}
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/*
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* Determines the absolute path of cmd using the the split path in path.
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* If cmd contains a slash or backslash, no lookup is performed.
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*/
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static char *path_lookup(const char *cmd, char **path, int exe_only)
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{
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char *prog = NULL;
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int len = strlen(cmd);
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int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
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if (strchr(cmd, '/') || strchr(cmd, '\\'))
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prog = xstrdup(cmd);
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while (!prog && *path)
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prog = lookup_prog(*path++, cmd, isexe, exe_only);
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return prog;
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}
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static int env_compare(const void *a, const void *b)
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{
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char *const *ea = a;
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char *const *eb = b;
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return strcasecmp(*ea, *eb);
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}
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static pid_t mingw_spawnve(const char *cmd, const char **argv, char **env,
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int prepend_cmd)
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{
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STARTUPINFO si;
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PROCESS_INFORMATION pi;
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struct strbuf envblk, args;
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unsigned flags;
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BOOL ret;
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/* Determine whether or not we are associated to a console */
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HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE,
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FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
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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(0);
|
|
si.hStdOutput = (HANDLE) _get_osfhandle(1);
|
|
si.hStdError = (HANDLE) _get_osfhandle(2);
|
|
|
|
/* 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, NULL, &si, &pi);
|
|
|
|
if (env)
|
|
strbuf_release(&envblk);
|
|
strbuf_release(&args);
|
|
|
|
if (!ret) {
|
|
errno = ENOENT;
|
|
return -1;
|
|
}
|
|
CloseHandle(pi.hThread);
|
|
return (pid_t)pi.hProcess;
|
|
}
|
|
|
|
pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env)
|
|
{
|
|
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(iprog, argv, env, 1);
|
|
free(iprog);
|
|
}
|
|
argv[0] = argv0;
|
|
}
|
|
else
|
|
pid = mingw_spawnve(prog, argv, env, 0);
|
|
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);
|
|
}
|
|
|
|
char **copy_environ()
|
|
{
|
|
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
|
|
*/
|
|
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;
|
|
}
|
|
|
|
/* this is the first function to call into WS_32; initialize it */
|
|
#undef gethostbyname
|
|
struct hostent *mingw_gethostbyname(const char *host)
|
|
{
|
|
WSADATA wsa;
|
|
|
|
if (WSAStartup(MAKEWORD(2,2), &wsa))
|
|
die("unable to initialize winsock subsystem, error %d",
|
|
WSAGetLastError());
|
|
atexit((void(*)(void)) WSACleanup);
|
|
return gethostbyname(host);
|
|
}
|
|
|
|
int mingw_socket(int domain, int type, int protocol)
|
|
{
|
|
int sockfd;
|
|
SOCKET 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 rename
|
|
int mingw_rename(const char *pold, const char *pnew)
|
|
{
|
|
DWORD attrs;
|
|
|
|
/*
|
|
* 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;
|
|
if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
|
|
return 0;
|
|
/* TODO: translate more errors */
|
|
if (GetLastError() == 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;
|
|
/* revert file attributes on failure */
|
|
SetFileAttributes(pnew, attrs);
|
|
}
|
|
}
|
|
errno = EACCES;
|
|
return -1;
|
|
}
|
|
|
|
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 __stdcall unsigned 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)
|
|
{
|
|
if (sig != SIGALRM)
|
|
return signal(sig, handler);
|
|
sig_handler_t old = timer_fn;
|
|
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);
|
|
printf("Launching default browser to display HTML ...\n");
|
|
ShellExecute(NULL, "open", htmlpath, NULL, "\\", 0);
|
|
}
|