mirror of
https://github.com/git/git
synced 2024-08-25 02:35:46 +00:00
![Johannes Sixt](/assets/img/avatar_default.png)
Before a process can be spawned by mingw_spawnve, arguments must be surrounded by double-quotes if special characters are present. This is necessary because the startup code of the spawned process will expand arguments that look like glob patterns. "Normal" Windows command line utilities expand only * and ?, but MSYS programs, including bash, are different: They also expand braces, and this has already been taken care of by compat/mingw.c:quote_arg(). But MSYS programs also treat single-quotes in a special way: Arguments between single-quotes are spliced together (with spaces) into a word. With this patch this treatment is avoided by quoting arguments that contain single-quotes. This lets t4252 pass on Windows. Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1142 lines
28 KiB
C
1142 lines
28 KiB
C
#include "../git-compat-util.h"
|
|
#include "win32.h"
|
|
#include "../strbuf.h"
|
|
|
|
unsigned int _CRT_fmode = _O_BINARY;
|
|
|
|
static int err_win_to_posix(DWORD winerr)
|
|
{
|
|
int error = ENOSYS;
|
|
switch(winerr) {
|
|
case ERROR_ACCESS_DENIED: error = EACCES; break;
|
|
case ERROR_ACCOUNT_DISABLED: error = EACCES; break;
|
|
case ERROR_ACCOUNT_RESTRICTION: error = EACCES; break;
|
|
case ERROR_ALREADY_ASSIGNED: error = EBUSY; break;
|
|
case ERROR_ALREADY_EXISTS: error = EEXIST; break;
|
|
case ERROR_ARITHMETIC_OVERFLOW: error = ERANGE; break;
|
|
case ERROR_BAD_COMMAND: error = EIO; break;
|
|
case ERROR_BAD_DEVICE: error = ENODEV; break;
|
|
case ERROR_BAD_DRIVER_LEVEL: error = ENXIO; break;
|
|
case ERROR_BAD_EXE_FORMAT: error = ENOEXEC; break;
|
|
case ERROR_BAD_FORMAT: error = ENOEXEC; break;
|
|
case ERROR_BAD_LENGTH: error = EINVAL; break;
|
|
case ERROR_BAD_PATHNAME: error = ENOENT; break;
|
|
case ERROR_BAD_PIPE: error = EPIPE; break;
|
|
case ERROR_BAD_UNIT: error = ENODEV; break;
|
|
case ERROR_BAD_USERNAME: error = EINVAL; break;
|
|
case ERROR_BROKEN_PIPE: error = EPIPE; break;
|
|
case ERROR_BUFFER_OVERFLOW: error = ENAMETOOLONG; break;
|
|
case ERROR_BUSY: error = EBUSY; break;
|
|
case ERROR_BUSY_DRIVE: error = EBUSY; break;
|
|
case ERROR_CALL_NOT_IMPLEMENTED: error = ENOSYS; break;
|
|
case ERROR_CANNOT_MAKE: error = EACCES; break;
|
|
case ERROR_CANTOPEN: error = EIO; break;
|
|
case ERROR_CANTREAD: error = EIO; break;
|
|
case ERROR_CANTWRITE: error = EIO; break;
|
|
case ERROR_CRC: error = EIO; break;
|
|
case ERROR_CURRENT_DIRECTORY: error = EACCES; break;
|
|
case ERROR_DEVICE_IN_USE: error = EBUSY; break;
|
|
case ERROR_DEV_NOT_EXIST: error = ENODEV; break;
|
|
case ERROR_DIRECTORY: error = EINVAL; break;
|
|
case ERROR_DIR_NOT_EMPTY: error = ENOTEMPTY; break;
|
|
case ERROR_DISK_CHANGE: error = EIO; break;
|
|
case ERROR_DISK_FULL: error = ENOSPC; break;
|
|
case ERROR_DRIVE_LOCKED: error = EBUSY; break;
|
|
case ERROR_ENVVAR_NOT_FOUND: error = EINVAL; break;
|
|
case ERROR_EXE_MARKED_INVALID: error = ENOEXEC; break;
|
|
case ERROR_FILENAME_EXCED_RANGE: error = ENAMETOOLONG; break;
|
|
case ERROR_FILE_EXISTS: error = EEXIST; break;
|
|
case ERROR_FILE_INVALID: error = ENODEV; break;
|
|
case ERROR_FILE_NOT_FOUND: error = ENOENT; break;
|
|
case ERROR_GEN_FAILURE: error = EIO; break;
|
|
case ERROR_HANDLE_DISK_FULL: error = ENOSPC; break;
|
|
case ERROR_INSUFFICIENT_BUFFER: error = ENOMEM; break;
|
|
case ERROR_INVALID_ACCESS: error = EACCES; break;
|
|
case ERROR_INVALID_ADDRESS: error = EFAULT; break;
|
|
case ERROR_INVALID_BLOCK: error = EFAULT; break;
|
|
case ERROR_INVALID_DATA: error = EINVAL; break;
|
|
case ERROR_INVALID_DRIVE: error = ENODEV; break;
|
|
case ERROR_INVALID_EXE_SIGNATURE: error = ENOEXEC; break;
|
|
case ERROR_INVALID_FLAGS: error = EINVAL; break;
|
|
case ERROR_INVALID_FUNCTION: error = ENOSYS; break;
|
|
case ERROR_INVALID_HANDLE: error = EBADF; break;
|
|
case ERROR_INVALID_LOGON_HOURS: error = EACCES; break;
|
|
case ERROR_INVALID_NAME: error = EINVAL; break;
|
|
case ERROR_INVALID_OWNER: error = EINVAL; break;
|
|
case ERROR_INVALID_PARAMETER: error = EINVAL; break;
|
|
case ERROR_INVALID_PASSWORD: error = EPERM; break;
|
|
case ERROR_INVALID_PRIMARY_GROUP: error = EINVAL; break;
|
|
case ERROR_INVALID_SIGNAL_NUMBER: error = EINVAL; break;
|
|
case ERROR_INVALID_TARGET_HANDLE: error = EIO; break;
|
|
case ERROR_INVALID_WORKSTATION: error = EACCES; break;
|
|
case ERROR_IO_DEVICE: error = EIO; break;
|
|
case ERROR_IO_INCOMPLETE: error = EINTR; break;
|
|
case ERROR_LOCKED: error = EBUSY; break;
|
|
case ERROR_LOCK_VIOLATION: error = EACCES; break;
|
|
case ERROR_LOGON_FAILURE: error = EACCES; break;
|
|
case ERROR_MAPPED_ALIGNMENT: error = EINVAL; break;
|
|
case ERROR_META_EXPANSION_TOO_LONG: error = E2BIG; break;
|
|
case ERROR_MORE_DATA: error = EPIPE; break;
|
|
case ERROR_NEGATIVE_SEEK: error = ESPIPE; break;
|
|
case ERROR_NOACCESS: error = EFAULT; break;
|
|
case ERROR_NONE_MAPPED: error = EINVAL; break;
|
|
case ERROR_NOT_ENOUGH_MEMORY: error = ENOMEM; break;
|
|
case ERROR_NOT_READY: error = EAGAIN; break;
|
|
case ERROR_NOT_SAME_DEVICE: error = EXDEV; break;
|
|
case ERROR_NO_DATA: error = EPIPE; break;
|
|
case ERROR_NO_MORE_SEARCH_HANDLES: error = EIO; break;
|
|
case ERROR_NO_PROC_SLOTS: error = EAGAIN; break;
|
|
case ERROR_NO_SUCH_PRIVILEGE: error = EACCES; break;
|
|
case ERROR_OPEN_FAILED: error = EIO; break;
|
|
case ERROR_OPEN_FILES: error = EBUSY; break;
|
|
case ERROR_OPERATION_ABORTED: error = EINTR; break;
|
|
case ERROR_OUTOFMEMORY: error = ENOMEM; break;
|
|
case ERROR_PASSWORD_EXPIRED: error = EACCES; break;
|
|
case ERROR_PATH_BUSY: error = EBUSY; break;
|
|
case ERROR_PATH_NOT_FOUND: error = ENOENT; break;
|
|
case ERROR_PIPE_BUSY: error = EBUSY; break;
|
|
case ERROR_PIPE_CONNECTED: error = EPIPE; break;
|
|
case ERROR_PIPE_LISTENING: error = EPIPE; break;
|
|
case ERROR_PIPE_NOT_CONNECTED: error = EPIPE; break;
|
|
case ERROR_PRIVILEGE_NOT_HELD: error = EACCES; break;
|
|
case ERROR_READ_FAULT: error = EIO; break;
|
|
case ERROR_SEEK: error = EIO; break;
|
|
case ERROR_SEEK_ON_DEVICE: error = ESPIPE; break;
|
|
case ERROR_SHARING_BUFFER_EXCEEDED: error = ENFILE; break;
|
|
case ERROR_SHARING_VIOLATION: error = EACCES; break;
|
|
case ERROR_STACK_OVERFLOW: error = ENOMEM; break;
|
|
case ERROR_SWAPERROR: error = ENOENT; break;
|
|
case ERROR_TOO_MANY_MODULES: error = EMFILE; break;
|
|
case ERROR_TOO_MANY_OPEN_FILES: error = EMFILE; break;
|
|
case ERROR_UNRECOGNIZED_MEDIA: error = ENXIO; break;
|
|
case ERROR_UNRECOGNIZED_VOLUME: error = ENODEV; break;
|
|
case ERROR_WAIT_NO_CHILDREN: error = ECHILD; break;
|
|
case ERROR_WRITE_FAULT: error = EIO; break;
|
|
case ERROR_WRITE_PROTECT: error = EROFS; break;
|
|
}
|
|
return error;
|
|
}
|
|
|
|
#undef open
|
|
int mingw_open (const char *filename, int oflags, ...)
|
|
{
|
|
va_list args;
|
|
unsigned mode;
|
|
va_start(args, oflags);
|
|
mode = va_arg(args, int);
|
|
va_end(args);
|
|
|
|
if (!strcmp(filename, "/dev/null"))
|
|
filename = "nul";
|
|
int fd = open(filename, oflags, mode);
|
|
if (fd < 0 && (oflags & O_CREAT) && errno == EACCES) {
|
|
DWORD attrs = GetFileAttributes(filename);
|
|
if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY))
|
|
errno = EISDIR;
|
|
}
|
|
return fd;
|
|
}
|
|
|
|
static inline time_t filetime_to_time_t(const FILETIME *ft)
|
|
{
|
|
long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
|
|
winTime -= 116444736000000000LL; /* Windows to Unix Epoch conversion */
|
|
winTime /= 10000000; /* Nano to seconds resolution */
|
|
return (time_t)winTime;
|
|
}
|
|
|
|
/* We keep the do_lstat code in a separate function to avoid recursion.
|
|
* When a path ends with a slash, the stat will fail with ENOENT. In
|
|
* this case, we strip the trailing slashes and stat again.
|
|
*/
|
|
static int do_lstat(const char *file_name, struct stat *buf)
|
|
{
|
|
WIN32_FILE_ATTRIBUTE_DATA fdata;
|
|
|
|
if (!(errno = get_file_attr(file_name, &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;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/* We provide our own lstat/fstat functions, since the provided
|
|
* lstat/fstat functions are so slow. These stat functions are
|
|
* tailored for Git's usage (read: fast), and are not meant to be
|
|
* complete. Note that Git stat()s are redirected to mingw_lstat()
|
|
* too, since Windows doesn't really handle symlinks that well.
|
|
*/
|
|
int mingw_lstat(const char *file_name, struct stat *buf)
|
|
{
|
|
int namelen;
|
|
static char alt_name[PATH_MAX];
|
|
|
|
if (!do_lstat(file_name, buf))
|
|
return 0;
|
|
|
|
/* if file_name ended in a '/', Windows returned ENOENT;
|
|
* try again without trailing slashes
|
|
*/
|
|
if (errno != ENOENT)
|
|
return -1;
|
|
|
|
namelen = strlen(file_name);
|
|
if (namelen && file_name[namelen-1] != '/')
|
|
return -1;
|
|
while (namelen && file_name[namelen-1] == '/')
|
|
--namelen;
|
|
if (!namelen || namelen >= PATH_MAX)
|
|
return -1;
|
|
|
|
memcpy(alt_name, file_name, namelen);
|
|
alt_name[namelen] = 0;
|
|
return do_lstat(alt_name, buf);
|
|
}
|
|
|
|
#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 */
|
|
if ((fh = open(file_name, O_RDWR | O_BINARY)) < 0)
|
|
return -1;
|
|
|
|
time_t_to_filetime(times->modtime, &mft);
|
|
time_t_to_filetime(times->actime, &aft);
|
|
if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
|
|
errno = EINVAL;
|
|
rc = -1;
|
|
} else
|
|
rc = 0;
|
|
close(fh);
|
|
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)
|
|
{
|
|
SYSTEMTIME st;
|
|
struct tm tm;
|
|
GetSystemTime(&st);
|
|
tm.tm_year = st.wYear-1900;
|
|
tm.tm_mon = st.wMonth-1;
|
|
tm.tm_mday = st.wDay;
|
|
tm.tm_hour = st.wHour;
|
|
tm.tm_min = st.wMinute;
|
|
tm.tm_sec = st.wSecond;
|
|
tv->tv_sec = tm_to_time_t(&tm);
|
|
if (tv->tv_sec < 0)
|
|
return -1;
|
|
tv->tv_usec = st.wMilliseconds*1000;
|
|
return 0;
|
|
}
|
|
|
|
int pipe(int filedes[2])
|
|
{
|
|
int fd;
|
|
HANDLE h[2], parent;
|
|
|
|
if (_pipe(filedes, 8192, 0) < 0)
|
|
return -1;
|
|
|
|
parent = GetCurrentProcess();
|
|
|
|
if (!DuplicateHandle (parent, (HANDLE)_get_osfhandle(filedes[0]),
|
|
parent, &h[0], 0, FALSE, DUPLICATE_SAME_ACCESS)) {
|
|
close(filedes[0]);
|
|
close(filedes[1]);
|
|
return -1;
|
|
}
|
|
if (!DuplicateHandle (parent, (HANDLE)_get_osfhandle(filedes[1]),
|
|
parent, &h[1], 0, FALSE, DUPLICATE_SAME_ACCESS)) {
|
|
close(filedes[0]);
|
|
close(filedes[1]);
|
|
CloseHandle(h[0]);
|
|
return -1;
|
|
}
|
|
fd = _open_osfhandle((int)h[0], O_NOINHERIT);
|
|
if (fd < 0) {
|
|
close(filedes[0]);
|
|
close(filedes[1]);
|
|
CloseHandle(h[0]);
|
|
CloseHandle(h[1]);
|
|
return -1;
|
|
}
|
|
close(filedes[0]);
|
|
filedes[0] = fd;
|
|
fd = _open_osfhandle((int)h[1], O_NOINHERIT);
|
|
if (fd < 0) {
|
|
close(filedes[0]);
|
|
close(filedes[1]);
|
|
CloseHandle(h[1]);
|
|
return -1;
|
|
}
|
|
close(filedes[1]);
|
|
filedes[1] = fd;
|
|
return 0;
|
|
}
|
|
|
|
int poll(struct pollfd *ufds, unsigned int nfds, int timeout)
|
|
{
|
|
int i, pending;
|
|
|
|
if (timeout >= 0) {
|
|
if (nfds == 0) {
|
|
Sleep(timeout);
|
|
return 0;
|
|
}
|
|
return errno = EINVAL, error("poll timeout not supported");
|
|
}
|
|
|
|
/* When there is only one fd to wait for, then we pretend that
|
|
* input is available and let the actual wait happen when the
|
|
* caller invokes read().
|
|
*/
|
|
if (nfds == 1) {
|
|
if (!(ufds[0].events & POLLIN))
|
|
return errno = EINVAL, error("POLLIN not set");
|
|
ufds[0].revents = POLLIN;
|
|
return 0;
|
|
}
|
|
|
|
repeat:
|
|
pending = 0;
|
|
for (i = 0; i < nfds; i++) {
|
|
DWORD avail = 0;
|
|
HANDLE h = (HANDLE) _get_osfhandle(ufds[i].fd);
|
|
if (h == INVALID_HANDLE_VALUE)
|
|
return -1; /* errno was set */
|
|
|
|
if (!(ufds[i].events & POLLIN))
|
|
return errno = EINVAL, error("POLLIN not set");
|
|
|
|
/* this emulation works only for pipes */
|
|
if (!PeekNamedPipe(h, NULL, 0, NULL, &avail, NULL)) {
|
|
int err = GetLastError();
|
|
if (err == ERROR_BROKEN_PIPE) {
|
|
ufds[i].revents = POLLHUP;
|
|
pending++;
|
|
} else {
|
|
errno = EINVAL;
|
|
return error("PeekNamedPipe failed,"
|
|
" GetLastError: %u", err);
|
|
}
|
|
} else if (avail) {
|
|
ufds[i].revents = POLLIN;
|
|
pending++;
|
|
} else
|
|
ufds[i].revents = 0;
|
|
}
|
|
if (!pending) {
|
|
/* The only times that we spin here is when the process
|
|
* that is connected through the pipes is waiting for
|
|
* its own input data to become available. But since
|
|
* the process (pack-objects) is itself CPU intensive,
|
|
* it will happily pick up the time slice that we are
|
|
* relinguishing here.
|
|
*/
|
|
Sleep(0);
|
|
goto repeat;
|
|
}
|
|
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 = strchr(buf, '\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)
|
|
{
|
|
if (!path)
|
|
return;
|
|
|
|
char **p = path;
|
|
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 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);
|
|
}
|
|
|
|
static pid_t mingw_spawnve(const char *cmd, const char **argv, char **env,
|
|
int prepend_cmd)
|
|
{
|
|
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(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);
|
|
}
|
|
|
|
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;
|
|
}
|