diff options
Diffstat (limited to 'compat/cygwin.c')
| -rw-r--r-- | compat/cygwin.c | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/compat/cygwin.c b/compat/cygwin.c deleted file mode 100644 index 91ce5d4c7a..0000000000 --- a/compat/cygwin.c +++ /dev/null @@ -1,157 +0,0 @@ -#define CYGWIN_C -#define WIN32_LEAN_AND_MEAN -#include <sys/stat.h> -#include <sys/errno.h> -#include "win32.h" -#include "../git-compat-util.h" -#include "../cache.h" /* to read configuration */ - -/* - * Return POSIX permission bits, regardless of core.ignorecygwinfstricks - */ -int cygwin_get_st_mode_bits(const char *path, int *mode) -{ - struct stat st; - if (lstat(path, &st) < 0) - return -1; - *mode = st.st_mode; - return 0; -} - -static inline void filetime_to_timespec(const FILETIME *ft, struct timespec *ts) -{ - long long winTime = ((long long)ft->dwHighDateTime << 32) + - ft->dwLowDateTime; - winTime -= 116444736000000000LL; /* Windows to Unix Epoch conversion */ - /* convert 100-nsecond interval to seconds and nanoseconds */ - ts->tv_sec = (time_t)(winTime/10000000); - ts->tv_nsec = (long)(winTime - ts->tv_sec*10000000LL) * 100; -} - -#define size_to_blocks(s) (((s)+511)/512) - -/* do_stat is a common implementation for cygwin_lstat and cygwin_stat. - * - * To simplify its logic, in the case of cygwin symlinks, this implementation - * falls back to the cygwin version of stat/lstat, which is provided as the - * last argument. - */ -static int do_stat(const char *file_name, struct stat *buf, stat_fn_t cygstat) -{ - WIN32_FILE_ATTRIBUTE_DATA fdata; - - if (file_name[0] == '/') - return cygstat (file_name, buf); - - if (!(errno = get_file_attr(file_name, &fdata))) { - /* - * If the system attribute is set and it is not a directory then - * it could be a symbol link created in the nowinsymlinks mode. - * Normally, Cygwin works in the winsymlinks mode, so this situation - * is very unlikely. For the sake of simplicity of our code, let's - * Cygwin to handle it. - */ - if ((fdata.dwFileAttributes & FILE_ATTRIBUTE_SYSTEM) && - !(fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) - return cygstat(file_name, buf); - - /* fill out the stat structure */ - buf->st_dev = buf->st_rdev = 0; /* not used by Git */ - buf->st_ino = 0; - buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes); - buf->st_nlink = 1; - buf->st_uid = buf->st_gid = 0; -#ifdef __CYGWIN_USE_BIG_TYPES__ - buf->st_size = ((_off64_t)fdata.nFileSizeHigh << 32) + - fdata.nFileSizeLow; -#else - buf->st_size = (off_t)fdata.nFileSizeLow; -#endif - buf->st_blocks = size_to_blocks(buf->st_size); - filetime_to_timespec(&fdata.ftLastAccessTime, &buf->st_atim); - filetime_to_timespec(&fdata.ftLastWriteTime, &buf->st_mtim); - filetime_to_timespec(&fdata.ftCreationTime, &buf->st_ctim); - return 0; - } else if (errno == ENOENT) { - /* - * In the winsymlinks mode (which is the default), Cygwin - * emulates symbol links using Windows shortcut files. These - * files are formed by adding .lnk extension. So, if we have - * not found the specified file name, it could be that it is - * a symbol link. Let's Cygwin to deal with that. - */ - return cygstat(file_name, buf); - } - return -1; -} - -/* We provide our own lstat/stat functions, since the provided Cygwin versions - * of these functions are too slow. These stat functions are tailored for Git's - * usage, and therefore they are not meant to be complete and correct emulation - * of lstat/stat functionality. - */ -static int cygwin_lstat(const char *path, struct stat *buf) -{ - return do_stat(path, buf, lstat); -} - -static int cygwin_stat(const char *path, struct stat *buf) -{ - return do_stat(path, buf, stat); -} - - -/* - * At start up, we are trying to determine whether Win32 API or cygwin stat - * functions should be used. The choice is determined by core.ignorecygwinfstricks. - * Reading this option is not always possible immediately as git_dir may - * not be set yet. So until it is set, use cygwin lstat/stat functions. - * However, if core.filemode is set, we must use the Cygwin posix - * stat/lstat as the Windows stat functions do not determine posix filemode. - * - * Note that git_cygwin_config() does NOT call git_default_config() and this - * is deliberate. Many commands read from config to establish initial - * values in variables and later tweak them from elsewhere (e.g. command line). - * init_stat() is called lazily on demand, typically much late in the program, - * and calling git_default_config() from here would break such variables. - */ -static int native_stat = 1; -static int core_filemode = 1; /* matches trust_executable_bit default */ - -static int git_cygwin_config(const char *var, const char *value, void *cb) -{ - if (!strcmp(var, "core.ignorecygwinfstricks")) - native_stat = git_config_bool(var, value); - else if (!strcmp(var, "core.filemode")) - core_filemode = git_config_bool(var, value); - return 0; -} - -static int init_stat(void) -{ - if (have_git_dir() && git_config(git_cygwin_config,NULL)) { - if (!core_filemode && native_stat) { - cygwin_stat_fn = cygwin_stat; - cygwin_lstat_fn = cygwin_lstat; - } else { - cygwin_stat_fn = stat; - cygwin_lstat_fn = lstat; - } - return 0; - } - return 1; -} - -static int cygwin_stat_stub(const char *file_name, struct stat *buf) -{ - return (init_stat() ? stat : *cygwin_stat_fn)(file_name, buf); -} - -static int cygwin_lstat_stub(const char *file_name, struct stat *buf) -{ - return (init_stat() ? lstat : *cygwin_lstat_fn)(file_name, buf); -} - -stat_fn_t cygwin_stat_fn = cygwin_stat_stub; -stat_fn_t cygwin_lstat_fn = cygwin_lstat_stub; - |