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Diffstat (limited to 'compat/mingw.c')
-rw-r--r--compat/mingw.c158
1 files changed, 123 insertions, 35 deletions
diff --git a/compat/mingw.c b/compat/mingw.c
index f74da235f5..54c82ecf20 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -6,6 +6,8 @@
#include "../run-command.h"
#include "../cache.h"
+#define HCAST(type, handle) ((type)(intptr_t)handle)
+
static const int delay[] = { 0, 1, 10, 20, 40 };
int err_win_to_posix(DWORD winerr)
@@ -394,6 +396,23 @@ int mingw_fflush(FILE *stream)
return ret;
}
+#undef write
+ssize_t mingw_write(int fd, const void *buf, size_t len)
+{
+ ssize_t result = write(fd, buf, len);
+
+ if (result < 0 && errno == EINVAL && buf) {
+ /* check if fd is a pipe */
+ HANDLE h = (HANDLE) _get_osfhandle(fd);
+ if (GetFileType(h) == FILE_TYPE_PIPE)
+ errno = EPIPE;
+ else
+ errno = EINVAL;
+ }
+
+ return result;
+}
+
int mingw_access(const char *filename, int mode)
{
wchar_t wfilename[MAX_PATH];
@@ -435,6 +454,39 @@ static inline time_t filetime_to_time_t(const FILETIME *ft)
return (time_t)(filetime_to_hnsec(ft) / 10000000);
}
+/**
+ * Verifies that safe_create_leading_directories() would succeed.
+ */
+static int has_valid_directory_prefix(wchar_t *wfilename)
+{
+ int n = wcslen(wfilename);
+
+ while (n > 0) {
+ wchar_t c = wfilename[--n];
+ DWORD attributes;
+
+ if (!is_dir_sep(c))
+ continue;
+
+ wfilename[n] = L'\0';
+ attributes = GetFileAttributesW(wfilename);
+ wfilename[n] = c;
+ if (attributes == FILE_ATTRIBUTE_DIRECTORY ||
+ attributes == FILE_ATTRIBUTE_DEVICE)
+ return 1;
+ if (attributes == INVALID_FILE_ATTRIBUTES)
+ switch (GetLastError()) {
+ case ERROR_PATH_NOT_FOUND:
+ continue;
+ case ERROR_FILE_NOT_FOUND:
+ /* This implies parent directory exists. */
+ return 1;
+ }
+ return 0;
+ }
+ return 1;
+}
+
/* We keep the do_lstat code in a separate function to avoid recursion.
* When a path ends with a slash, the stat will fail with ENOENT. In
* this case, we strip the trailing slashes and stat again.
@@ -495,6 +547,12 @@ static int do_lstat(int follow, const char *file_name, struct stat *buf)
case ERROR_NOT_ENOUGH_MEMORY:
errno = ENOMEM;
break;
+ case ERROR_PATH_NOT_FOUND:
+ if (!has_valid_directory_prefix(wfilename)) {
+ errno = ENOTDIR;
+ break;
+ }
+ /* fallthru */
default:
errno = ENOENT;
break;
@@ -674,13 +732,13 @@ int pipe(int filedes[2])
errno = err_win_to_posix(GetLastError());
return -1;
}
- filedes[0] = _open_osfhandle((int)h[0], O_NOINHERIT);
+ filedes[0] = _open_osfhandle(HCAST(int, h[0]), O_NOINHERIT);
if (filedes[0] < 0) {
CloseHandle(h[0]);
CloseHandle(h[1]);
return -1;
}
- filedes[1] = _open_osfhandle((int)h[1], O_NOINHERIT);
+ filedes[1] = _open_osfhandle(HCAST(int, h[1]), O_NOINHERIT);
if (filedes[1] < 0) {
close(filedes[0]);
CloseHandle(h[1]);
@@ -752,7 +810,7 @@ static const char *quote_arg(const char *arg)
return arg;
/* insert \ where necessary */
- d = q = xmalloc(len+n+3);
+ d = q = xmalloc(st_add3(len, n, 3));
*d++ = '"';
while (*arg) {
if (*arg == '"')
@@ -835,7 +893,7 @@ static char **get_path_split(void)
if (!n)
return NULL;
- path = xmalloc((n+1)*sizeof(char *));
+ ALLOC_ARRAY(path, n + 1);
p = envpath;
i = 0;
do {
@@ -920,7 +978,7 @@ static wchar_t *make_environment_block(char **deltaenv)
i++;
/* copy the environment, leaving space for changes */
- tmpenv = xmalloc((size + i) * sizeof(char*));
+ ALLOC_ARRAY(tmpenv, size + i);
memcpy(tmpenv, environ, size * sizeof(char*));
/* merge supplied environment changes into the temporary environment */
@@ -1011,7 +1069,7 @@ static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **deltaen
free(quoted);
}
- wargs = xmalloc((2 * args.len + 1) * sizeof(wchar_t));
+ ALLOC_ARRAY(wargs, st_add(st_mult(2, args.len), 1));
xutftowcs(wargs, args.buf, 2 * args.len + 1);
strbuf_release(&args);
@@ -1110,7 +1168,7 @@ static int try_shell_exec(const char *cmd, char *const *argv)
int argc = 0;
const char **argv2;
while (argv[argc]) argc++;
- argv2 = xmalloc(sizeof(*argv) * (argc+1));
+ ALLOC_ARRAY(argv2, argc + 1);
argv2[0] = (char *)cmd; /* full path to the script file */
memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
pid = mingw_spawnv(prog, argv2, 1);
@@ -1584,7 +1642,12 @@ repeat:
if (gle == ERROR_ACCESS_DENIED &&
(attrs = GetFileAttributesW(wpnew)) != INVALID_FILE_ATTRIBUTES) {
if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
- errno = EISDIR;
+ DWORD attrsold = GetFileAttributesW(wpold);
+ if (attrsold == INVALID_FILE_ATTRIBUTES ||
+ !(attrsold & FILE_ATTRIBUTE_DIRECTORY))
+ errno = EISDIR;
+ else if (!_wrmdir(wpnew))
+ goto repeat;
return -1;
}
if ((attrs & FILE_ATTRIBUTE_READONLY) &&
@@ -1829,7 +1892,8 @@ void mingw_open_html(const char *unixpath)
die("cannot run browser");
printf("Launching default browser to display HTML ...\n");
- r = (int)ShellExecute(NULL, "open", htmlpath, NULL, "\\", SW_SHOWNORMAL);
+ r = HCAST(int, ShellExecute(NULL, "open", htmlpath,
+ NULL, "\\", SW_SHOWNORMAL));
FreeLibrary(shell32);
/* see the MSDN documentation referring to the result codes here */
if (r <= 32) {
@@ -1915,28 +1979,31 @@ pid_t waitpid(pid_t pid, int *status, int options)
return -1;
}
+int mingw_skip_dos_drive_prefix(char **path)
+{
+ int ret = has_dos_drive_prefix(*path);
+ *path += ret;
+ return ret;
+}
+
int mingw_offset_1st_component(const char *path)
{
- int offset = 0;
- if (has_dos_drive_prefix(path))
- offset = 2;
+ char *pos = (char *)path;
/* unc paths */
- else if (is_dir_sep(path[0]) && is_dir_sep(path[1])) {
-
+ if (!skip_dos_drive_prefix(&pos) &&
+ is_dir_sep(pos[0]) && is_dir_sep(pos[1])) {
/* skip server name */
- char *pos = strpbrk(path + 2, "\\/");
+ pos = strpbrk(pos + 2, "\\/");
if (!pos)
return 0; /* Error: malformed unc path */
do {
pos++;
} while (*pos && !is_dir_sep(*pos));
-
- offset = pos - path;
}
- return offset + is_dir_sep(path[offset]);
+ return pos + is_dir_sep(*pos) - path;
}
int xutftowcsn(wchar_t *wcs, const char *utfs, size_t wcslen, int utflen)
@@ -2024,6 +2091,37 @@ int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen)
return -1;
}
+static void setup_windows_environment()
+{
+ char *tmp = getenv("TMPDIR");
+
+ /* on Windows it is TMP and TEMP */
+ if (!tmp) {
+ if (!(tmp = getenv("TMP")))
+ tmp = getenv("TEMP");
+ if (tmp) {
+ setenv("TMPDIR", tmp, 1);
+ tmp = getenv("TMPDIR");
+ }
+ }
+
+ if (tmp) {
+ /*
+ * Convert all dir separators to forward slashes,
+ * to help shell commands called from the Git
+ * executable (by not mistaking the dir separators
+ * for escape characters).
+ */
+ for (; *tmp; tmp++)
+ if (*tmp == '\\')
+ *tmp = '/';
+ }
+
+ /* simulate TERM to enable auto-color (see color.c) */
+ if (!getenv("TERM"))
+ setenv("TERM", "cygwin", 1);
+}
+
/*
* Disable MSVCRT command line wildcard expansion (__getmainargs called from
* mingw startup code, see init.c in mingw runtime).
@@ -2102,19 +2200,7 @@ void mingw_startup()
qsort(environ, i, sizeof(char*), compareenv);
/* fix Windows specific environment settings */
-
- /* on Windows it is TMP and TEMP */
- if (!mingw_getenv("TMPDIR")) {
- const char *tmp = mingw_getenv("TMP");
- if (!tmp)
- tmp = mingw_getenv("TEMP");
- if (tmp)
- setenv("TMPDIR", tmp, 1);
- }
-
- /* simulate TERM to enable auto-color (see color.c) */
- if (!getenv("TERM"))
- setenv("TERM", "cygwin", 1);
+ setup_windows_environment();
/* initialize critical section for waitpid pinfo_t list */
InitializeCriticalSection(&pinfo_cs);
@@ -2131,11 +2217,13 @@ void mingw_startup()
int uname(struct utsname *buf)
{
- DWORD v = GetVersion();
+ unsigned v = (unsigned)GetVersion();
memset(buf, 0, sizeof(*buf));
- strcpy(buf->sysname, "Windows");
- sprintf(buf->release, "%u.%u", v & 0xff, (v >> 8) & 0xff);
+ xsnprintf(buf->sysname, sizeof(buf->sysname), "Windows");
+ xsnprintf(buf->release, sizeof(buf->release),
+ "%u.%u", v & 0xff, (v >> 8) & 0xff);
/* assuming NT variants only.. */
- sprintf(buf->version, "%u", (v >> 16) & 0x7fff);
+ xsnprintf(buf->version, sizeof(buf->version),
+ "%u", (v >> 16) & 0x7fff);
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-28 07:27:14 +0000