From: Torsten Bögershausen <tboegi@xxxxxx>
A regression for cygwin users was introduced with commit 05b458c,
"real_path: resolve symlinks by hand".
In the the commit message we read:
The current implementation of real_path uses chdir() in order to resolve
symlinks. Unfortunately this isn't thread-safe as chdir() affects a
process as a whole...
The old (and non-thread-save) OS calls chdir()/pwd() had been
replaced by a string operation.
The cygwin layer "knows" that "C:\cygwin" is an absolute path,
but the new string operation does not.
"git clone <url> C:\cygwin\home\USER\repo" fails like this:
fatal: Invalid path '/home/USER/repo/C:\cygwin\home\USER\repo'
The solution is to implement has_dos_drive_prefix(), skip_dos_drive_prefix()
is_dir_sep(), offset_1st_component() and convert_slashes() for cygwin
in the same way as it is done in 'Git for Windows' in compat/mingw.[ch]
Instead of duplicating the code, it is extracted into compat/mingw-cygwin.[ch]
Some need for refactoring and cleanup came up in the review, they are adressed
in a seperate commit.
Reported-By: Steven Penny <svnpenn@xxxxxxxxx>
Signed-off-by: Torsten Bögershausen <tboegi@xxxxxx>
---
compat/cygwin.c | 19 -------------------
compat/cygwin.h | 2 --
compat/mingw-cygwin.c | 28 ++++++++++++++++++++++++++++
compat/mingw-cygwin.h | 20 ++++++++++++++++++++
compat/mingw.c | 29 +----------------------------
compat/mingw.h | 20 --------------------
config.mak.uname | 4 ++--
git-compat-util.h | 3 ++-
8 files changed, 53 insertions(+), 72 deletions(-)
delete mode 100644 compat/cygwin.c
delete mode 100644 compat/cygwin.h
create mode 100644 compat/mingw-cygwin.c
create mode 100644 compat/mingw-cygwin.h
diff --git a/compat/cygwin.c b/compat/cygwin.c
deleted file mode 100644
index b9862d606d..0000000000
--- a/compat/cygwin.c
+++ /dev/null
@@ -1,19 +0,0 @@
-#include "../git-compat-util.h"
-#include "../cache.h"
-
-int cygwin_offset_1st_component(const char *path)
-{
- const char *pos = path;
- /* unc paths */
- if (is_dir_sep(pos[0]) && is_dir_sep(pos[1])) {
- /* skip server name */
- pos = strchr(pos + 2, '/');
- if (!pos)
- return 0; /* Error: malformed unc path */
-
- do {
- pos++;
- } while (*pos && pos[0] != '/');
- }
- return pos + is_dir_sep(*pos) - path;
-}
diff --git a/compat/cygwin.h b/compat/cygwin.h
deleted file mode 100644
index 8e52de4644..0000000000
--- a/compat/cygwin.h
+++ /dev/null
@@ -1,2 +0,0 @@
-int cygwin_offset_1st_component(const char *path);
-#define offset_1st_component cygwin_offset_1st_component
diff --git a/compat/mingw-cygwin.c b/compat/mingw-cygwin.c
new file mode 100644
index 0000000000..c63d7acb9c
--- /dev/null
+++ b/compat/mingw-cygwin.c
@@ -0,0 +1,28 @@
+#include "../git-compat-util.h"
+
+int mingw_cygwin_skip_dos_drive_prefix(char **path)
+{
+ int ret = has_dos_drive_prefix(*path);
+ *path += ret;
+ return ret;
+}
+
+int mingw_cygwin_offset_1st_component(const char *path)
+{
+ char *pos = (char *)path;
+
+ /* unc paths */
+ if (!skip_dos_drive_prefix(&pos) &&
+ is_dir_sep(pos[0]) && is_dir_sep(pos[1])) {
+ /* skip server name */
+ pos = strpbrk(pos + 2, "\\/");
+ if (!pos)
+ return 0; /* Error: malformed unc path */
+
+ do {
+ pos++;
+ } while (*pos && !is_dir_sep(*pos));
+ }
+
+ return pos + is_dir_sep(*pos) - path;
+}
diff --git a/compat/mingw-cygwin.h b/compat/mingw-cygwin.h
new file mode 100644
index 0000000000..66ccc909ae
--- /dev/null
+++ b/compat/mingw-cygwin.h
@@ -0,0 +1,20 @@
+#define has_dos_drive_prefix(path) \
+ (isalpha(*(path)) && (path)[1] == ':' ? 2 : 0)
+int mingw_cygwin_skip_dos_drive_prefix(char **path);
+#define skip_dos_drive_prefix mingw_cygwin_skip_dos_drive_prefix
+static inline int mingw_cygwin_is_dir_sep(int c)
+{
+ return c == '/' || c == '\\';
+}
+#define is_dir_sep mingw_cygwin_is_dir_sep
+static inline char *mingw_cygwin_find_last_dir_sep(const char *path)
+{
+ char *ret = NULL;
+ for (; *path; ++path)
+ if (is_dir_sep(*path))
+ ret = (char *)path;
+ return ret;
+}
+#define find_last_dir_sep mingw_cygwin_find_last_dir_sep
+int mingw_cygwin_offset_1st_component(const char *path);
+#define offset_1st_component mingw_cygwin_offset_1st_component
diff --git a/compat/mingw.c b/compat/mingw.c
index 34b3880b29..038e96af9d 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -350,7 +350,7 @@ static inline int needs_hiding(const char *path)
return 0;
/* We cannot use basename(), as it would remove trailing slashes */
- mingw_skip_dos_drive_prefix((char **)&path);
+ mingw_cygwin_skip_dos_drive_prefix((char **)&path);
if (!*path)
return 0;
@@ -2275,33 +2275,6 @@ 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)
-{
- char *pos = (char *)path;
-
- /* unc paths */
- if (!skip_dos_drive_prefix(&pos) &&
- is_dir_sep(pos[0]) && is_dir_sep(pos[1])) {
- /* skip server name */
- pos = strpbrk(pos + 2, "\\/");
- if (!pos)
- return 0; /* Error: malformed unc path */
-
- do {
- pos++;
- } while (*pos && !is_dir_sep(*pos));
- }
-
- return pos + is_dir_sep(*pos) - path;
-}
-
int xutftowcsn(wchar_t *wcs, const char *utfs, size_t wcslen, int utflen)
{
int upos = 0, wpos = 0;
diff --git a/compat/mingw.h b/compat/mingw.h
index 8c24ddaa3e..30d9fb3e36 100644
--- a/compat/mingw.h
+++ b/compat/mingw.h
@@ -443,32 +443,12 @@ HANDLE winansi_get_osfhandle(int fd);
* git specific compatibility
*/
-#define has_dos_drive_prefix(path) \
- (isalpha(*(path)) && (path)[1] == ':' ? 2 : 0)
-int mingw_skip_dos_drive_prefix(char **path);
-#define skip_dos_drive_prefix mingw_skip_dos_drive_prefix
-static inline int mingw_is_dir_sep(int c)
-{
- return c == '/' || c == '\\';
-}
-#define is_dir_sep mingw_is_dir_sep
-static inline char *mingw_find_last_dir_sep(const char *path)
-{
- char *ret = NULL;
- for (; *path; ++path)
- if (is_dir_sep(*path))
- ret = (char *)path;
- return ret;
-}
static inline void convert_slashes(char *path)
{
for (; *path; path++)
if (*path == '\\')
*path = '/';
}
-#define find_last_dir_sep mingw_find_last_dir_sep
-int mingw_offset_1st_component(const char *path);
-#define offset_1st_component mingw_offset_1st_component
#define PATH_SEP ';'
extern char *mingw_query_user_email(void);
#define query_user_email mingw_query_user_email
diff --git a/config.mak.uname b/config.mak.uname
index 3ee7da0e23..9346f67922 100644
--- a/config.mak.uname
+++ b/config.mak.uname
@@ -187,7 +187,7 @@ ifeq ($(uname_O),Cygwin)
UNRELIABLE_FSTAT = UnfortunatelyYes
OBJECT_CREATION_USES_RENAMES = UnfortunatelyNeedsTo
MMAP_PREVENTS_DELETE = UnfortunatelyYes
- COMPAT_OBJS += compat/cygwin.o
+ COMPAT_OBJS += compat/mingw-cygwin.o
FREAD_READS_DIRECTORIES = UnfortunatelyYes
endif
ifeq ($(uname_S),FreeBSD)
@@ -526,7 +526,7 @@ ifneq (,$(findstring MINGW,$(uname_S)))
DEFAULT_HELP_FORMAT = html
COMPAT_CFLAGS += -DNOGDI -Icompat -Icompat/win32
COMPAT_CFLAGS += -DSTRIP_EXTENSION=\".exe\"
- COMPAT_OBJS += compat/mingw.o compat/winansi.o \
+ COMPAT_OBJS += compat/mingw.o compat/mingw-cygwin.o compat/winansi.o \
compat/win32/pthread.o compat/win32/syslog.o \
compat/win32/dirent.o
BASIC_CFLAGS += -DWIN32 -DPROTECT_NTFS_DEFAULT=1
diff --git a/git-compat-util.h b/git-compat-util.h
index 09b0102cae..7ece969b22 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -193,10 +193,11 @@
#endif
#if defined(__CYGWIN__)
-#include "compat/cygwin.h"
+#include "compat/mingw-cygwin.h"
#endif
#if defined(__MINGW32__)
/* pull in Windows compatibility stuff */
+#include "compat/mingw-cygwin.h"
#include "compat/mingw.h"
#elif defined(_MSC_VER)
#include "compat/msvc.h"
--
2.19.0.271.gfe8321ec05
