getpwuid() is implemented just enough that GIT does not issue errors.
Since the information that it returns is not very useful, users are
required to set up user.name and user.email configuration.

All uses of getpwuid() are like getpwuid(getuid()), hence, the return value
of getuid() is irrelevant and the uid parameter is not even looked at.

Side note: getpwnam() is only used to resolve '~' and '~username' paths,
which is an idiom not known on Windows, hence, we don't implement it.

Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
---
 compat/mingw.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/compat/mingw.c b/compat/mingw.c
index faa6df3..0c1d0e4 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -62,7 +62,15 @@ struct tm *localtime_r(const time_t *timep, struct tm *result)
 
 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;
 }
 
-- 
1.5.4.1.126.ge5a7d

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